Protection circuitry for reversible connectors

The invention relates to a protection circuitry for a reversible connectors. An electronic device may include a connector port that accommodates reversible connector plugs. The connector port may include protection circuitry that protects other components in the electronic device from undesired power supply voltages. The protection circuitry may form a first branch and a second branch opposite to the first branch. The protection circuitry may receive control signals from power polarity detection circuitry. The power polarity detection circuitry may detect the presence of power supply voltages at the first branch and the second branch. In response to detecting the presence of a power supply voltage at a given branch, the power polarity detection circuitry may disable a power supply signal path through the opposite branch and enable a power supply signal path through the given branch.

Techniques for configuring contacts of a connector

The invention provides techniques for configuring contacts of a connector. Systems and methods for configuring contacts of a first connector includes detecting mating of a second connector with the first connector and in response to the detection, sending a command over one of the contacts and waiting for a response to the command. If a valid response to the command is received, the system determines the orientation of the second connector. The response also includes configuration information for contacts in the second connector. The system then configures some of the other contacts of the first connector based on the determined orientation and configuration information of the contacts of the second connector.

Methods, systems and apparatus for determining whether an accessory includes particular circuitry

The invention relates to methods, systems, and apparatus for determining whether an accessory includes particular circuitry. A host device may measure a first voltage and a second voltage received from an accessory, where the voltages are provide through the accessory from a power source. Before measuring the second voltage, the host device may send an instruction to the accessory instructing the accessory to alter an impedance of the power path between the power source and the host device, and the host device may draw at least a threshold amount of current from the power source via the accessory. The host device may then determine whether the accessory includes particular circuitry based on the relationship between the first voltage and the second voltage.

Methods, systems and apparatus for enabling an accessory for use with a host device

The invention relates to methods, systems and apparatus for enabling an accessory for use with a host device. Methods, systems, and apparatus for enabling a power path between a power source and a host device via an accessory are provided. A host device may send, to an accessory arranged within the power path, via a first data pin arranged in the host device, a request for an accessory identifier. The accessory identifier identifies the accessory. The host device may then determine whether the accessory identifier is received from the accessory within a specified period of time or whether a received accessory identifier is valid. If the accessory identifier is not received from the accessory within the specified period of time, or a received accessory identifier is not valid, the host device sends a new request for the accessory identifier to the accessory via a second data pin different than the first data pin.

Techniques for detecting removal of a connector

The disclosure relates to techniques for detecting removal of a connector. A system that detects electrical disconnection of one connector from another connector includes a detection circuitry and a protection circuitry. The detection circuitry detects that a plug connector has been electrically disconnected from a corresponding receptacle connector. In response to the detection, the detection circuitry sends a signal to the protection circuitry. In response to the signal, the protection circuitry lowers or terminates power being supplied to a host device via one of the contacts of the plug connector. This helps to prevent shocks/short circuits that may be caused by accidental disconnection of the plug connector.

Component interfacing in hazard safety systems

Systems and methods for interfacing a hazard detection device with a control panel system via a dongle are provided. The dongle may be configured to alternate between drawing first and second amounts of power from the control panel system in response to the hazard detection device alternating between operating in a normal mode when no hazard is detected and an alarm mode when a hazard is detected. The hazard detection device may operate independently of any characteristics of the control panel system. For example, the hazard detection device may operate without drawing any power from the control panel system. Therefore, the dongle may allow for various types of hazard detection devices to interface with a common two-line power control system.

Techniques for configuring contacts of a connector

Systems and methods for configuring contacts of a first connector includes detecting mating of a second connector with the first connector and in response to the detection, sending a command over one of the contacts and waiting for a response to the command. If a valid response to the command is received, the system determines the orientation of the second connector. The response also includes configuration information for contacts in the second connector. The system then configures some of the other contacts of the first connector based on the determined orientation and configuration information of the contacts of the second connector.

Bifurcated processor hazard detection systems

Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold.

SHIELDING STRUCTURES FOR WIRELESS ELECTRONIC DEVICES WITH DISPLAYS

Electronic devices such as computers and handheld devices are provided. The electronic devices may have electrical components such as displays that are driven by driver circuitry. During operation, the driver circuitry may generate radio-frequency noise. Communications circuitry in the electronic devices may be shielded from the radio-frequency noise by radio-frequency shielding structures. The shielding structures may be mounted on portions of the display module, on a cover glass layer, or on other structures such as housing structures. The radio-frequency shielding structures may be formed from one or more metal segments. The metal segments may run along edges of the display. A device housing may have a ground formed from a conductive peripheral member that runs around peripheral edges of the housing and a conductive plate that is connected to the conductive peripheral member. The radio-frequency shielding structure may be connected to the ground using conductive structures. 1. An electronic device , comprising:antenna structures;a display module that generates radio-frequency display module noise signals; anda radio-frequency shielding structure having three conductive segments that respectively run along three edges of the display module, wherein at least part of the radio-frequency shielding structure is interposed between the display module and the antenna structures and shields the antenna structures from the radio-frequency display module noise signals.2. The electronic device defined in wherein the display module comprises a substrate and wherein the three conductive segments comprise conductive traces on the substrate.3. The electronic device defined in wherein the substrate comprises a thin-film-transistor layer that includes a plurality of thin-film transistors.4. The electronic device defined in wherein the thin-film-transistor layer comprises a layer of glass and wherein the conductive segments comprise metal traces on the glass.5. The electronic ...

DIGITAL SIGNAL FILTER

A passive filter circuit filters an input signal to attenuate an undesired frequency. The passive filter circuit includes a first stage and a second stage. The input to the first stage is the input signal. The first stage includes a first inductor and a first branch coupled to the output of the first inductor. The first branch includes a first capacitor and a second inductor. The first stage is coupled to the second stage. The second stage includes a third inductor and a second branch coupled to the output of the third inductor. The second branch includes a second capacitor. Other embodiments are also described and claimed. 1. A passive filter circuit for filtering an input signal to attenuate an undesired frequency , comprising:a first stage to receive the input signal, the first stage having a first inductor and a first branch coupled to the output of the first inductor, the first branch having a first capacitor and a second inductor; anda second stage coupled to the first stage, the second stage having a third inductor and a second branch coupled to the output of the third inductor, the second branch having a second capacitor.2. The passive filter circuit of claim 1 , wherein the undesired frequency is a radio communications frequency.3. The passive filter circuit of claim 2 , wherein the radio communications frequency is between 800 MHz and 900 MHz.4. The passive filter circuit of claim 1 , wherein a capacitance value of the first capacitor substantially equals a capacitance value of the second capacitor.5. The passive filter circuit of claim 1 , wherein the first capacitor and the second inductor are discrete components claim 1 , wherein addition of the second inductor to the first branch lowers a resonant frequency of the first branch without having to increase a capacitance value of the first capacitor claim 1 , which degrades a rise time of an output signal.6. The passive filter circuit of claim 5 , wherein the rise time of the output signal does not exceed ...

Vibration Sensing System and Method for Categorizing Portable Device Context and Modifying Device Operation

A portable device includes: an enclosure, one or more processors for executing one or more programs; one or more actuators in or on the enclosure for generating mechanical vibrations; one or more sensors in or on the enclosure for detecting mechanical vibrations; and memory storing one or more programs for execution by the one or more processors. The device analyzes one or more signals produced by the one or more sensors with respect to mechanical vibrations to determine a holding state of the portable device, and conditionally modifies operation of at least one application executed by the one or more processors in accordance with the determined holding state. 1. A portable device , comprising:an enclosure;one or more processors for executing one or more programs;one or more actuators in or on the enclosure for generating mechanical vibrations;one or more sensors in or on the enclosure for detecting mechanical vibrations; andmemory storing one or more programs for execution by the one or more processors, the one or more programs comprising:instructions for analyzing one or more signals produced by the one or more sensors with respect to mechanical vibrations to determine a holding state of the portable device; andinstructions for modifying operation of at least one application executed by the one or more processors in accordance with the determined holding state.2. The portable device of claim 1 , wherein a respective sensor of the one or more sensors and a respective actuator of the one or more actuators comprise a same device.3. The portable device of claim 1 , wherein at least one of the one or more sensors is a piezo transducer.4. The portable device of claim 1 , wherein the instructions for analyzing determine a grip strength of a user's hold on the portable device.5. The portable device of claim 4 , wherein the instructions for modifying operation modify a user interface response to a user gesture in accordance with the determined grip strength.6. The portable ...

PROTECTION CIRCUITRY FOR REVERSIBLE CONNECTORS

An electronic device may include a connector port that accommodates reversible connector plugs. The connector port may include protection circuitry that protects other components in the electronic device from undesired power supply voltages. The protection circuitry may form a first branch and a second branch opposite to the first branch. The protection circuitry may receive control signals from power polarity detection circuitry. The power polarity detection circuitry may detect the presence of power supply voltages at the first branch and the second branch. In response to detecting the presence of a power supply voltage at a given branch, the power polarity detection circuitry may disable a power supply signal path through the opposite branch and enable a power supply signal path through the given branch. 1. Connector port power protection circuitry coupled between electrical components and first and second contacts in a first connector , wherein the first connector is configured to mate with a second connector having third and fourth contacts in a first orientation in which the first contact is coupled to the third contact and the second contact is connected to the fourth contact and a second orientation in which the first contact is coupled to the fourth contact and the second contact is connected to the third contact:a first circuit branch coupled between the first contact and the electrical components;a second circuit branch coupled between the second contact and the electrical components; andconnector orientation detection circuitry coupled to the first and second connector contacts, wherein the connector orientation detection circuitry provides control signals to the first and second circuit branches so that the first circuit branch isolates the first contact from the electrical components in response to detection of the first orientation and so that the second circuit branch isolates the second contact from the electrical components in response to detection ...

Electronic Device with Multimode Fingerprint Reader

An electronic device may operate a fingerprint reader in a stationary finger mode in which the fingerprint reader captures a fingerprint from a user's finger while the user's finger is in a stationary position and may operate the fingerprint reader in a moving finger mode in which the fingerprint reader captures a fingerprint from the user's finger while the user is swiping the finger across the fingerprint reader. The electronic device may use the moving finger mode when performing sensitive operations such as operations related to financial transactions. The electronic device may include near field communications circuitry. When activity is detected using the near field communications circuitry, the fingerprint reader may be operated in the moving finger mode. The fingerprint sensor may be activated when a proximity sensor detects the presence of a finger. Different actions may be taken by the device in response to detection of different fingerprints. 1. An electronic device , comprising:a fingerprint reader; andcontrol circuitry, wherein the control circuitry is configured to operate the fingerprint reader in a stationary finger mode and a moving finger mode.2. The electronic device defined in wherein the control circuitry is configured to take action in response to capturing a valid fingerprint from a stationary finger while operating the fingerprint reader in the stationary finger mode.3. The electronic device defined in wherein the control circuitry is configured to take action in response to capturing a valid fingerprint as a user swipes a finger across the fingerprint reader while operating the fingerprint reader in the moving finger mode.4. The electronic device defined in further comprising a display claim 1 , wherein the fingerprint reader gathers fingerprints on a portion of the display.5. The electronic device defined in wherein the fingerprint reader includes a two-dimensional array of sensors.6. The electronic device defined in wherein the sensors are ...

METHODS FOR INVOKING TESTING USING REVERSIBLE CONNECTORS

Electronic devices may be provided with audio circuits and controller circuitry configured to support test mode operations. A connector such as a reversible connector may be inserted into a mating device connector in an electronic device. The reversible connector may be connected to the device connector in either a normal orientation or a reversed orientation in which the reversible connector is rotated 180° with respect to the normal orientation. During test mode operations, a tester may be coupled to the device connector using the reversible connector. The tester may generate voltages, resistances, time-varying signals, or other input that directs the device to configure switching circuitry to support testing. Monitoring circuitry in the device may be used to detect input from the tester. In response to detected input from the tester, the switching circuitry may be adjusted to couple the controller to the device connector. 1. An electronic device , comprising:a first circuit;a second circuit, wherein the second circuit comprises test circuitry configured to support test mode operations;a device connector that is configured to receive a reversible connector of a tester;switching circuitry coupled between the first and second circuits and the device connector, wherein the switching circuitry is configured to route signals from the device connector to the first circuit during normal operation and is configured to route signals from the device connector to the second circuit during the test mode operations; andcontrol circuitry configured to monitor at least one contact in the device connector for at least one signal from the tester, wherein the control circuitry is configured to adjust the switching circuitry in response to detection of the at least one signal from the tester.2. The electronic device defined in wherein the device connector comprises at least six contacts and a ground and is configured to mate with the reversible connector in a normal orientation and ...

TECHNIQUES FOR CONFIGURING CONTACTS OF A CONNECTOR

Systems and methods for configuring contacts of a first connector includes detecting mating of a second connector with the first connector and in response to the detection, sending a command over one of the contacts and waiting for a response to the command. If a valid response to the command is received, the system determines the orientation of the second connector. The response also includes configuration information for contacts in the second connector. The system then configures some of the other contacts of the first connector based on the determined orientation and configuration information of the contacts of the second connector. 1. An electronic device comprising:a first connector having a plurality of contacts; and detect when a second connector is mated with the first connector, the second connector being associated with an accessory;', 'in response to the detection, send a command to the accessory over a first contact in the plurality of contacts, and', 'if a response to the command is received from the accessory over the first contact, set internal connections to one or more contacts in the plurality of contacts., 'control circuitry operatively coupled to at least some of the plurality of contacts, wherein the control circuitry is configured to2. The electronic device of wherein the control circuitry is further configured to:in response to the detection, switch the first contact from an inactive state to an active state prior to sending the command over the first contact.3. The electronic device of wherein if no response is received over the first contact claim 1 , the control circuitry is further configured to send the command over a second contact in the plurality of contacts.4. The electronic device of wherein the response includes information about configuration for contacts in the second connector.5. The electronic device of wherein the control circuitry sets internal connections to the one or more contacts in the plurality of contacts based on the ...

Microphone Line Based Detection of Headset Plug Removal

Embodiments of the invention include methods, apparatus, systems and means for distinguishing between microphone line signals resulting from: actuation of a microphone button of a headset plugged into a telephone device jack, and removal of the headset plug form the jack. During a telephone call, a first signal can be detected on a microphone line of a headset jack to indicate whether a microphone button of the headset is actuated. Also, while the headset plug is being disconnected from the jack, a transition on the microphone line can be detected, from a second signal indicating that the microphone is being disconnected, to a third signal indicating that the microphone button is actuated. Consequently, to avoid erroneously hanging up a call, transitions to the third signal when removing the plug form the jack can be ignored and the call can be maintained. Other embodiments are also described and claimed. 1. A method for operating a telephony device having a headset jack to connect with a headset plug of a headset , the headset having a microphone and a microphone button , comprising:during a telephone call, detecting a first signal on a microphone line of the headset jack, with the microphone connected thereto, wherein the first signal indicates that the microphone button is not actuated; and thenwhile the headset plug is being disconnected from the jack, detecting a transition on the microphone line, from a second signal indicating that the microphone is disconnected, to a third signal indicating that the microphone button is actuated; and thenignoring the third signal thereby maintaining the telephone call.2. The method of claim 1 , further comprising detecting removal of the headset plug from the jack claim 1 , after detecting the transition.3. The method of claim 1 , wherein the transition on the microphone line is detected without first having detected removal of the headset plug.4. The method of claim 1 , wherein detecting the transition further comprises ...

TECHNIQUES FOR CONFIGURING CONTACTS OF A CONNECTOR

Systems and methods for configuring contacts of a first connector includes detecting mating of a second connector with the first connector and in response to the detection, sending a command over one of the contacts and waiting for a response to the command. If a valid response to the command is received, the system determines the orientation of the second connector. The response also includes configuration information for contacts in the second connector. The system then configures some of the other contacts of the first connector based on the determined orientation and configuration information of the contacts of the second connector. 1. An accessory comprising: a plurality of contacts including a first plurality of external contacts, the first plurality of external contacts including a first data contact and a second data contact configured to enable communication between the accessory and a host device using a communication protocol and an ID contact configured to carry information that identifies the communication protocol associated with the first and second data contacts;', 'an identification module storing information that identifies the communication protocol and configured to send the information over the ID contact; and', 'a power control module configured to enable a power path between the accessory and the host device;, 'a plug connector configured to be inserted into a corresponding receptacle connector, the plug connector comprisingwherein the identification module and the power module each is implemented as single integrated circuit (IC) chip.2. The accessory of wherein the plurality of contacts further comprise a third data contact and a fourth data contact configured to enable communication using a second communication protocol and wherein the ID contact is further configured to carry information that identifies the second communication protocol.3. The accessory of wherein the communication protocol is USB protocol and the second communication ...

HIGH ELASTIC MODULUS POLYMER ELECTROLYTES SUITABLE FOR PREVENTING THERMAL RUNAWAY IN LITHIUM BATTERIES

A polymer that combines high ionic conductivity with the structural properties required for Li electrode stability is useful as a solid phase electrolyte for high energy density, high cycle life batteries that do not suffer from failures due to side reactions and dendrite growth on the Li electrodes, and other potential applications. The polymer electrolyte includes a linear block copolymer having a conductive linear polymer block with a molecular weight of at least 5000 Daltons, a structural linear polymer block with an elastic modulus in excess of 1×10Pa and an ionic conductivity of at least 1×10Scm. The electrolyte is made under dry conditions to achieve the noted characteristics. In another aspect, the electrolyte exhibits a conductivity drop when the temperature of electrolyte increases over a threshold temperature, thereby providing a shutoff mechanism for preventing thermal runaway in lithium battery cells. 1. A polymer electrolyte , comprising: a Li-ion conductive non-crosslinked linear polymer block with a molecular weight of at least 5000 Daltons;', {'sup': '7', 'a structural linear polymer block with an elastic modulus in excess of 1×10Pa;'}, {'sup': −5', '−1, 'and an ionic conductivity of at least 1×10Scm.'}], 'a linear block copolymer having a cylindrical nanostructure morphology, the block copolymer comprising,'}221-. (canceled)22. The electrolyte of claim 1 , wherein the block copolymer is selected from the group consisting of SEO (54-23) claim 1 , SEO (216-102) and SEO (360-165) having volume fraction of conductive EO phase 0.28 claim 1 , 0.3 claim 1 , and 0.3 claim 1 , respectively.23. The electrolyte of claim 22 , wherein the block copolymer is SEO (54-23).2432-. (canceled)33. A method of making a polymer electrolyte claim 22 , comprising:in an oxygen and moisture free environment,{'sup': '7', 'forming a linear block copolymer having a cylindrical nanostructure morphology, the block copolymer comprising a Li-ion conductive linear polymer block with ...

THREE DIMENSIONAL PASSIVE MULTI-COMPONENT STRUCTURES

Stacked arrays of components are disclosed. In one embodiment, a first and a second layer of components are electrically and mechanically coupled to an interposer with an encapsulated third layer of components disposed between the first and second layers. The first layer can be configured to attach the stacked array to a host printed circuit board. The interposer can couple signals between the components on the first and second layers. 1. A vertically stacked integrated array , comprising:a first layer, the first layer comprising a first passive component;a first and a second conductive edge plate each of which is electrically connected to the first passive component; 'a second passive component, the second passive component encapsulated within the second layer; and', 'a second layer, the second layer disposed between the first and second conductive edge plates, the second layer comprisinga third layer, the third layer comprising a third passive component having a reduced size footprint electrical contact configured to electrically connect the second passive component by way of a micro-via to an external circuit, wherein the first and second conductive edge plates electrically connect the first and third layers, and wherein the second layer is disposed between the first layer and the third layer, wherein the vertically stacked integrated array has a high packing density.2. The vertically stacked integrated array as recited in claim 1 , wherein the external circuit is arranged on a host printed circuit board (PCB) which is electrically and mechanically connected to the third passive component.3. The vertically stacked integrated array as recited in claim 2 , wherein the second layer is a PCB having at least two layers.4. The vertically stacked integrated array as recited in claim 3 , wherein the first passive component is a bulk decoupling capacitor claim 3 , the second passive component is a mid-range decoupling capacitor claim 3 , and the third passive component is ...

THREE DIMENSIONAL PASSIVE MULTI-COMPONENT STRUCTURES

Stacked arrays of components are disclosed. In one embodiment, a first and a second layer of components are electrically and mechanically coupled to a thin interposer disposed between the first and second layers. The first layer can be configured to attach the stacked array to a host printed circuit board. The interposer can insulate the components from one another and also couple signals between the components on the first and second layers. In one embodiment, the components in the first and second layers are passive components. 1. A vertically stacked integrated array , comprising: a thin printed circuit board (PCB) having a first and second surface;', 'a plurality of surface mounting features disposed on the first and second surface of the thin PCB; and', 'conductive edge plating arranged on a peripheral portion of the thin PCB and configured to electrically couple signals from the first surface of the thin PCB to a second surface of the thin PCB; and, 'a first layer, comprisinga second layer, comprising an integrated circuit electrically coupled to at least one of the plurality of surface mounting features on the first surface of the thin PCB; anda third layer, comprising a plurality of passive components electrically coupled to a plurality of the surface mounting features on the second surface of the thin PCB and configured to electrically connect the integrated circuit by way of the conductive edge plating to an external circuit,wherein the conductive edge plating electrically connects the second and third layers, and wherein the thin PCB minimizes the overall height of the vertically stacked integrated array, thereby increasing vertical packing density.2. The vertically stacked integrated array as recited in claim 1 , wherein the plurality of passive components of the third layer are electrically and mechanically connected to a host PCB which acts as a substrate for the external circuit.3. The vertically stacked integrated array as recited in claim 2 , ...

LOW PROFILE, SPACE EFFICIENT CIRCUIT SHIELDS

A low profile, space efficient circuit shield is disclosed. The shield includes top and bottom metal layers disposed on the top of and below an integrated circuit. In one embodiment the shield can include edge plating arranged to encircle the edges of the integrated circuit and couple the top and bottom metal layers together. In another embodiment, the shield can include through vias arranged to encircle the edges of the integrated circuit and couple the top and bottom metal layers together. In yet another embodiment, passive components can be disposed adjacent to the integrated circuit within the shield. 1. A small form factor shield device comprising: an integrated circuit, the integrated circuit comprising a plurality of conductive contact pads, and', 'a matrix, the matrix being formed of insulative material and configured for fully encapsulating the integrated circuit; and', 'a conformable electromagnetic interference (EMI) shield formed of a flexible conductor wrapped directly around at least a top and a bottom portion of the integrated circuit assembly and configured to conform to a shape of the top and bottom portion of the integrated circuit assembly such that the wrapped integrated circuit assembly comprising the conformable EMI shield and the integrated circuit assembly is substantially the same size as the integrated circuit assembly alone, wherein the conformable EMI shield is electrically coupled to at least one grounded conductive contact pad of the plurality of conductive contact pads thereby eliminating a need for a dedicated contact pad to support shield signal coupling., 'an integrated circuit assembly, the integrated circuit assembly comprising2. The small form factor shield device as recited in claim 1 , further comprising:at least one via formed in the matrix connecting at least one of the plurality of conductive contact pads to an exterior of the integrated circuit assembly;an exterior contact pad at the exterior of the integrated circuit ...

CHARGING A BATTERY BASED ON STORED BATTERY CHARACTERISTICS

The described embodiments include a power-management unit that receives and stores a representation of a temperature state of a battery pack from a battery-monitoring mechanism in a battery pack. For example, an interface circuit (such as a single-wire-interface or SWI circuit) may receive the information from the battery-monitoring mechanism via a signal line, and the information may be stored in a memory (such as a non-transitory computer-readable memory). This stored information is then used by a temperature-monitoring mechanism or circuit to determine the temperature state of the battery pack, which may be used to control or gate charging of a battery in the battery pack. 1. A power-management unit , comprising:a single-wire-interface (SWI) connector configured to couple to a signal line from a battery pack;an SWI circuit, coupled to the SWI connector, configured to receive information from a battery-monitoring mechanism in the battery pack via the signal line;a memory, coupled to the SWI circuit, configured to store the information, wherein the stored information includes a representation of a temperature state of the battery pack; anda temperature-monitoring mechanism, coupled to the memory, configured to determine the temperature state of the battery pack based on the stored information.2. The power-management unit of claim 1 , wherein the SWI circuit includes a sniffer that is configured to receive the information claim 1 , which is a subset of information communicated between the battery-monitoring mechanism and an integrated circuit on the signal line.3. The power-management unit of claim 1 , wherein the information includes a timestamp that specifies when the battery-monitoring mechanism measured the temperature state of the battery pack so that the temperature-monitoring mechanism can determine if the battery-monitoring mechanism continues to measure the temperature state.4. The power-management unit of claim 1 , wherein the power-management unit is ...

COMMUNICATION AND MONITORING OF A BATTERY VIA A SINGLE WIRE

A power-management unit is described. This power-management unit allows a common signal line to communicate data between an integrated circuit (which may be external to the power-management unit) and a battery-monitoring mechanism in a battery pack, and to convey a signal that represents a temperature state of the battery pack to a temperature-monitoring circuit or mechanism that monitors the temperature state of the battery pack. In particular, the power-management unit may include a single-wire interface or a multiplexer that, at a given time, selectively couples the signal line from the battery pack either to the integrated circuit or the temperature-monitoring circuit based on a control signal provided by the integrated circuit (for example, via an I2C bus or interface). In this way, the power-management unit may reduce the number of signal lines needed to communicate with the battery-monitoring mechanism and to convey the signal.

TECHNIQUES FOR CONFIGURING CONTACTS OF A CONNECTOR

Systems and methods for configuring contacts of a first connector includes detecting mating of a second connector with the first connector and in response to the detection, sending a command over one of the contacts and waiting for a response to the command. If a valid response to the command is received, the system determines the orientation of the second connector. The response also includes configuration information for contacts in the second connector. The system then configures some of the other contacts of the first connector based on the determined orientation and configuration information of the contacts of the second connector. 1. An electronic device comprising:a first connector having a plurality of contacts; and detect when a second connector is mated with the first connector,', 'in response to the detection, send a command over a first contact in the plurality of contacts, and', 'if a response to the command is received over the first contact, set internal connections to one or more contacts in the plurality of contacts., 'control circuitry operatively coupled to at least some of the plurality of contacts, wherein the control circuitry is configured to2. The electronic device of further comprising detection circuitry configured to:in response to detecting mating of the second connector, switch the first contact from an open state to be connected with the control circuitry thereby enabling the control circuitry to send the command over the first contact.3. The electronic device of wherein if no response is received over the first contact claim 1 , the control circuitry is further configured to send the command over a second contact in the plurality of contacts.4. The electronic device of wherein the response includes information about configuration of contacts in the second connector.5. The electronic device of wherein the control circuitry sets internal connections to the one or more contacts in the plurality of contacts based on the configuration ...

Methods, systems and apparatus for determining whether an accessory includes particular circuitry

Methods, systems, and apparatus for determining whether an accessory includes particular circuitry. A host device may measure a first voltage and a second voltage received from an accessory, where the voltages are provide through the accessory from a power source. Before measuring the second voltage, the host device may send an instruction to the accessory instructing the accessory to alter an impedance of the power path between the power source and the host device, and the host device may draw at least a threshold amount of current from the power source via the accessory. The host device may then determine whether the accessory includes particular circuitry based on the relationship between the first voltage and the second voltage.

METHODS, SYSTEMS AND APPARATUS FOR DETERMINING WHETHER AN ACCESSORY INCLUDES PARTICULAR CIRCUITRY

Methods, systems, and apparatus for determining whether an accessory includes particular circuitry. A host device may measure a first voltage and a second voltage received from an accessory, where the voltages are provide through the accessory from a power source. Before measuring the second voltage, the host device may send an instruction to the accessory instructing the accessory to alter an impedance of the power path between the power source and the host device, and the host device may draw at least a threshold amount of current from the power source via the accessory. The host device may then determine whether the accessory includes particular circuitry based on the relationship between the first voltage and the second voltage. 1. A method of determining whether an accessory includes particular circuitry , comprising:measuring, at a host device coupled to an accessory, a first voltage received from the accessory, the first voltage being received via a power pin provided in the host device;sending, by the host device, an instruction to the accessory to alter an impedance, at the accessory, of a power path between a power source and the host device;measuring, at the host device, a second voltage received from the accessory, the second voltage being received via the power pin provided in the host device; anddetermining, by the host device, whether the accessory includes particular circuitry based on the relationship between the first voltage and the second voltage.2. The method of wherein determining whether the accessory includes particular circuitry comprises:determining that the accessory includes the particular circuitry if the first voltage is greater than the second voltage by at least a predetermined amount; anddetermining that the accessory does not include the particular circuitry if the first voltage is not greater than the second voltage by at least the predetermined amount.3. The method of further comprising:if the accessory is determined to include ...

TECHNIQUES FOR DETECTING REMOVAL OF A CONNECTOR

A system that detects electrical disconnection of one connector from another connector includes a detection circuitry and a protection circuitry. The detection circuitry detects that a plug connector has been electrically disconnected from a corresponding receptacle connector. In response to the detection, the detection circuitry sends a signal to the protection circuitry. In response to the signal, the protection circuitry lowers or terminates power being supplied to a host device via one of the contacts of the plug connector. This helps to prevent shocks/shorts that may be caused by accidental disconnection of the plug connector. 1. A method for detecting decoupling of a first connector associated with an accessory from a second connector associated with a host device , wherein the first connector includes at least a first contact for coupling a communication line between the host device and the accessory and a second contact for coupling a power line between the host device and the accessory , the method comprising:monitoring, by the accessory, a communication line configured to be either in a first state or a second state;detecting, by the accessory, that the communication line has changed from the first state to the second state;determining, by the accessory, a time duration for which the communication line is in the second state;if the time duration exceeds a threshold time, instructing a protection unit in the accessory to enable a high resistance path to reduce power provided over the power line.2. The method of wherein the first state corresponds to logic “high” and the second state corresponds to logic “low.”3. The method of wherein the threshold time is characterized by a data pulse width that is greater than all other data pulse widths transmitted or received over the communication line.4. The method of wherein the threshold time is between 20 μs and 50 μs.5. The method of wherein the threshold time is 2-10 microseconds more than a time of a longest data ...

TECHNIQUES FOR DETECTING REMOVAL OF A CONNECTOR

A system that detects electrical disconnection of one connector from another connector includes a detection circuitry and a protection circuitry. The detection circuitry detects that a plug connector has been electrically disconnected from a corresponding receptacle connector. In response to the detection, the detection circuitry sends a signal to the protection circuitry. In response to the signal, the protection circuitry lowers or terminates power being supplied to a host device via one of the contacts of the plug connector. This helps to prevent shocks/shorts that may be caused by accidental disconnection of the plug connector. 1. A method for detecting decoupling of a first connector from a second connector , wherein the first connector is associated with an accessory and the second connector is associated with a host device , the first connector including a first contact for coupling a communication line between the accessory and the host device and a second contact for coupling a power line between the host device and the accessory , wherein the power line is configured to carry power from the accessory to the host device , the method comprising:while the first connector is coupled to the second connector, monitoring, by a detection circuitry in the accessory, the communication line, wherein the communication line is configured to be either in a first state or a second state;detecting, by the detection circuitry, that the communication line has changed from the first state to the second state;determining, by the detection circuitry in the accessory, a time duration for which the communication line is in the second state;determining, by the detection circuitry, that the time duration exceeds a threshold time;reducing, by a protection unit within the accessory, power on the second contact of the first connector.2. The method of wherein the first state corresponds to logic “high” and the second state corresponds to logic “low.”3. The method of wherein the ...

METHODS, SYSTEMS AND APPARATUS FOR ENABLING AN ACCESSORY FOR USE WITH A HOST DEVICE

Methods, systems, and apparatus for enabling a power path between a power source and a host device via an accessory. A host device may send, to an accessory arranged within the power path, via a first data pin arranged in the host device, a request for an accessory identifier. The accessory identifier identifies the accessory. The host device may then determine whether the accessory identifier is received from the accessory within a specified period of time or whether a received accessory identifier is valid. If the accessory identifier is not received from the accessory within the specified period of time, or a received accessory identifier is not valid, the host device sends a new request for the accessory identifier to the accessory via a second data pin different than the first data pin. 1. A method of enabling a power path between a power source and a host device , comprising:sending, from the host device to an accessory arranged within the power path, via a first data pin arranged in the host device, a request for an accessory identifier, the accessory identifier identifying the accessory;determining whether the accessory identifier is received from the accessory within a specified period of time or whether a received accessory identifier is valid; andif it is determined that the accessory identifier is not received from the accessory within the specified period of time, or that a received accessory identifier is not valid, sending a new request for the accessory identifier to the accessory via a second data pin different than the first data pin.2. The method of claim 1 , further comprising:starting a timer after sending the request for the accessory identifier via the first data pin;monitoring the first data pin for information communicated from the accessory;determining whether an accessory identifier is received via the first data pin before the timer reaches a specified period; andif it is determined that an accessory identifier is not received via the ...

Portable Thermal Seat Cover

A portable seat cover that retains a user's thermal energy, and reemits the thermal energy back to the user to negate the need for a thermal energy source. The seat cover overlays an outdoor chair or bench through a pair of flaps that join together. The seat cover include a panel of insulation that has sufficient heat capacity to retain the user's thermal energy, and reemit the thermal energy from the thermal cover back onto the user. The insulation positions inside an external cover, and is comprised of two layers of double bubble polyethylene sandwiched between a metalized aluminum film. The insulation may include an aluminum lightweight, space age design that integrates closed cell foam and reflective technology with a protective poly coating within multiple thin layers. The seat cover is rolled up into a cylindrical shape with elastic bands that attach to the ends of the seat cover. 1. A thermal cover comprising:an external cover, said external cover being configured to overlay a mounting surface;an insulation portion, said insulation portion comprising a metalized film, said insulation portion further comprising an insulator;at least one mounting fastener, said at least one mounting fastener being configured to join said thermal cover with said mounting surface; andat least one rollup fastener, said at least one rollup fastener being configured to secure said thermal cover in a rolled position.2. The thermal cover of claim 1 , in which said insulation portion comprises said insulator sandwiched between two layers of said metalized film.3. The thermal cover of claim 2 , in which said insulator comprises a multiplicity of layers of polyethylene bubbles.4. The thermal cover of claim 3 , in which said metalized film comprises aluminum.5. The thermal cover of claim 4 , wherein said insulator portion utilizes radiant heat to provide warmth throughout said thermal cover.6. The thermal cover of claim 5 , in which said external cover comprises a slit claim 5 , said slit ...

Antenna Structures and Shield Layers on Packaged Wireless Circuits

An electronic device may be provided with antenna structures. Circuitry such as radio-frequency transceiver circuitry and impedance matching and filter circuitry may be implemented using one or more circuit components and embedded within an insulator to form packaged circuitry. The insulator may be formed from multiple layers of printed circuit board material or from plastic molded onto a printed circuit board substrate over the circuitry. A metal shield layer may be interposed between the packaged circuitry and the antenna structures. The metal shield layer may be mounted on the surface of the packaged circuitry using a layer of adhesive. A layer of polymer may be interposed between the layer of adhesive and the metal shielding layer. The metal shield layer may have an opening through which conductive paths may pass to couple the packaged circuitry to antenna terminals on the antenna structures. 1. Apparatus , comprising:packaged circuitry;a shield layer on the packaged circuitry; andantenna structures on the shield layer.2. The apparatus defined in wherein the packaged circuitry comprises at least one radio-frequency transceiver integrated circuit.3. The apparatus defined in further comprising a printed circuit to which the packaged circuitry is mounted.4. The apparatus defined in wherein the printed circuit comprises traces claim 3 , the apparatus further comprising solder that couples the traces in the printed circuit board to the packaged circuitry.5. The apparatus defined in wherein the packaged circuitry comprises molded plastic that encapsulates the radio-frequency transceiver integrated circuit.6. The apparatus defined in wherein the packaged circuitry comprises a printed circuit substrate and wire bonding wires coupled between the radio-frequency transceiver integrated circuit and the printed circuit substrate.7. The apparatus defined in wherein the packaged circuitry comprises a printed circuit substrate and solder balls coupled between the radio- ...

DATA STRUCTURES FOR FACILITATING COMMUNICATION BETWEEN A HOST DEVICE AND AN ACCESSORY

Computer readable storage mediums, electronic devices, and accessories having stored thereon data structures. A data structure includes a pin selection field operable to identify a connector pin and cause a host device to select one of a plurality of communication protocols for communicating with an accessory over the identified connector pin. The data structure also includes an accessory capability field defining an accessory identifier that uniquely identifies the accessory. 1. A computer readable storage memory having stored thereon a data structure comprising:a pin selection field operable to identify a connector pin and cause a host device to select one of a plurality of communication protocols for communicating with an accessory over the identified connector pin; andan accessory capability field defining one or more capabilities of the accessory.2. The computer readable storage medium of claim 1 , wherein the data structure further comprises a command response field defining a response to a command communicated to the accessory by the host device.3. The computer readable storage medium of claim 2 , further comprising a cyclic redundancy check field that enables the host device to detect errors in the command response field claim 2 , the pin selection field claim 2 , and the accessory capability field.4. The computer readable storage medium of claim 1 , wherein the pin selection field configures a data pin of the host device over which the host device previously communicated a command to the accessory claim 1 , the pin selection field configuring the data pin by instructing the host device to select one of the communication protocols for subsequently communicating with the accessory via the data pin claim 1 , the selected communication protocol being defined by the pin selection field.5. The computer readable storage medium of claim 1 , wherein the pin selection field configures a data pin of the host device other than one over which the host device previously ...

DATA STRUCTURES FOR FACILITATING COMMUNICATION BETWEEN A HOST DEVICE AND AN ACCESSORY

Computer readable storage mediums, electronic devices, and accessories having stored thereon data structures. A data structure includes a pin selection field operable to identify a connector pin and cause a host device to select one of a plurality of communication protocols for communicating with an accessory over the identified connector pin. The data structure also includes an accessory capability field defining an accessory identifier that uniquely identifies the accessory. 1. An accessory , comprising:a connector for mating with an electronic device having a plurality of electronic device pins, the connector including a plurality of accessory pins for engaging the electronic device pins upon mating;communication circuitry coupled to at least one of the accessory pins for communicating information between the accessory and the electronic device; and the command response field defines a response to a command communicated to the accessory by the electronic device; and', 'the payload field includes a pin selection field operable to cause the electronic device to identify at least one of the electronic device pins and cause the electronic device to select one of a plurality of communication protocols for communicating with the accessory over the identified pin., 'a memory operable to store a data structure, the data structure including a command response field and a payload field, wherein2. The accessory of claim 1 , wherein the accessory pins include a pair of data pins coupled to the communication circuitry such that the accessory is operable to communicate with the electronic device over the pair of data pins using a particular communication protocol built into the communication circuitry.3. The accessory of wherein the pin selection field is operable to cause the electronic device to identify a pair of electronic device pins that contact the pair of data pins when the accessory mates with the electronic device.4. The accessory of claim 3 , wherein the pin ...

SYSTEMS AND METHODS FOR SECURE AND PERSISTENT RETENTION OF SENSITIVE INFORMATION

An information processing system provisions a client account for a user to enable a client computer associated with the user to store information in an elastic storage system and to prohibit the client computer, the information processing system, and the elastic storage system from altering and from deleting the stored information during an authorized retention period. Data messages are received from one or more client computers and include information that is required to be stored for the authorized retention period. That information is transmitted via one or more data communications networks to the elastic storage system for storage so that the stored information is non-rewriteable and non-erasable during the authorized retention period. The secure data center receives the retrieved copy and provides it to the user device. The elastic storage system permits deletion, modification, or destruction of the stored information only when a trusted independent third party having predetermined authentication information associated with the client account provides the predetermined authentication information to the elastic storage system. 1. A method implemented in an information processing system including one or more data processors , the method comprising:provisioning, by the information processing system, a client account for a user to enable a client computer associated with the user to store information in an elastic storage system and to prohibit the client computer, the information processing system, and the elastic storage system from altering and from deleting the stored information during an authorized retention period;receiving at the information processing system data messages sent via one or more communications networks from one or more client computers, the received data messages including information that is required to be stored for the authorized retention period;transmitting, from the information processing system, the received information via one or more ...

Printed circuit board with compact groups of devices

Electronic devices may contain electrical systems in which electrical components are mounted on a substrate such as a printed circuit board. The electrical components may include surface mount technology components. Multiple surface mount technology components may be stacked on top of each other and beside each other to form an electrical component that minimizes the amount of area that is consumed on a printed circuit board. Noise suppression circuits and other circuits may be implemented using stacked surface mount technology components. Surface mount technology components placed on the printed circuit board may be pushed together and subsequently injection molded to form packed component groups. An integrated circuit may be mounted to the printed circuit board via an interposer and may cover components mounted to the printed circuit board. An integrated circuit may be mounted over a recessed portion of the printed circuit board on which components are mounted. 1. Apparatus , comprising:a printed circuit board having printed circuit board contacts; andan electrical component formed from a plurality of stacked surface mount technology components on the printed circuit board, wherein the plurality of stacked surface mount technology components includes at least a first surface mount technology component having first component contacts and a second surface mount technology component having second component contacts, wherein the first surface mount technology component is mounted to the printed circuit board so that at least one of the first component contacts is coupled to at least one of the printed circuit board contacts and wherein the second surface mount technology component is mounted on the first surface mount technology component so that none of the second component contacts are coupled to the printed circuit board contacts.2. The apparatus defined in wherein the first surface mount technology component comprises a surface mount technology capacitor and ...

TECHNIQUES FOR DETECTING REMOVAL OF A CONNECTOR

A system that detects electrical disconnection of one connector from another connector includes a detection circuitry and a protection circuitry. The detection circuitry detects that a plug connector has been electrically disconnected from a corresponding receptacle connector. In response to the detection, the detection circuitry sends a signal to the protection circuitry. In response to the signal, the protection circuitry lowers or terminates power being supplied to a host device via one of the contacts of the plug connector. This helps to prevent shocks/shorts that may be caused by accidental disconnection of the plug connector. 1. An electronic device comprising:a communication line;a power line;a first connector comprising a plurality of contacts including a data contact and a power contact, the first connector configured to mate with a second connector of a second device and couple the communication line and the power line between the electronic device and the second device with the data contact and the power contact, respectively;communication circuitry coupled to the data contact that enables the device to exchange data with a second electronic device over the communication line using a predetermined communication protocol in which data pulses having a pulse width carry information, wherein the pulse width is characterized by, as the data line transitions from a first state to a second state and back to the first state, a length of time in which the data line is in the second state, and wherein the communication protocol transmits information to the second device using a predetermined set of different data pulse types, each data pulse type in the predetermined set of data pulse types having a different pulse width; monitor the communication line to determine whether the communication line is in the first or the second state;', 'determine whether a connector disconnection event occurred based on whether the communication line remains in the second state ...

SYSTEMS AND METHODS FOR DETECTING WIRELESS COMMUNICATION JAMMING IN A NETWORK

An electronic device may include a processor and a network interface that may include a first radio and a second radio. The processor may be configured to perform wireless communication jamming attack detection by occasionally performing clear channel verification utilizing the network interface to determine whether a threshold number of devices' channels are incapacitated in a wireless network within a threshold amount of time and/or by sending a heartbeat signal from the first radio and determining whether the second radio received the heartbeat signal. 1. (canceled)2. An electronic device , comprising:a power source configured to provide operational power to the electronic device;a network interface comprising a wireless radio, the wireless radio being configured to wirelessly communicate with a plurality of electronic devices over one or more wireless channels; and learn steady-state characteristics of the plurality of electronic devices that communicate over the one or more wireless channels;', 'perform a clear channel verification utilizing the network interface of the one or more wireless channels, wherein the clear channel verification considers the steady-state characteristics when performing the clear channel verification; and', 'determine, based on the clear channel verification, whether any wireless channels of the one or more wireless channels are incapacitated., 'a processor in communication with the network interface, the processor being configured to3. The electronic device of claim 2 , wherein the processor is further configured to: determine that a wireless network is being jammed based upon at least a threshold number of the one or more wireless channels being incapacitated within a threshold period of time.4. The electronic device of claim 2 , wherein the processor is further configured to detect a loss of communication with one or more of the plurality of electronic devices via the one or more wireless channels as part of the clear channel ...

POWER MANAGEMENT IN LINE POWERED HAZARD DETECTION SYSTEMS

Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold. 1. A line powered hazard detection system , comprising:an AC-to-DC converter coupled to and operative to provide power to a power bus;a backup battery power source coupled to and operative to provide power to the power bus; anda plurality of power-consuming components operative to consume power supplied to the power bus, the power-consuming components comprising at least one processor, at least one sensor for detecting at least one of smoke, heat, and carbon-monoxide, first wireless communications circuitry characterized by relatively low power consumption and configured to wirelessly communicate according to a first protocol characterized by relatively low data rates, and second wireless communications circuitry characterized by relatively high power consumption and configured to wirelessly communicate according to a second protocol characterized by relatively high data rates,wherein the system is selectively powered by power provided by the AC-to-DC converter or the backup battery power source, and wherein when the system is powered by the backup battery power source, a power budgeting scheme is enforced that imposes run-time constraints that limit operation of the system to ensure the system reliably operates for a minimum period of time.2. The system of claim 1 , wherein the system is operative to function according to any one of a plurality of different modes claim 1 , the plurality of different modes comprises an idle mode ...

Power gating in hazard detection systems

Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold.

Power quality differentiation in hazard detection systems

Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold.

COMPONENT INTERFACING IN HAZARD SAFETY SYSTEMS

Systems and methods for interfacing a hazard detection device with a control panel system via a dongle are provided. The dongle may be configured to alternate between drawing first and second amounts of power from the control panel system in response to the hazard detection device alternating between operating in a normal mode when no hazard is detected and an alarm mode when a hazard is detected. The hazard detection device may operate independently of any characteristics of the control panel system. For example, the hazard detection device may operate without drawing any power from the control panel system. Therefore, the dongle may allow for various types of hazard detection devices to interface with a common two-line power control system. 1. A dongle for interfacing a control panel system with a hazard detection device , the control panel system comprising a control panel and at least one wired detection string , wherein the control panel monitors a current level provided to each wired detection string to determine whether an alarm condition exists on the at least one wired detection string , and wherein the hazard detection device is of a type that would cause a false alarm condition to exist for the wired detection string if it were directly electrically coupled to that wired detection string , the dongle comprising:a first connector configured to be electrically coupled to a wired detection string of the control panel system;a second connector configured to be electrically coupled to the hazard detection device; and receive a control signal from the hazard detection device via the second connector;', 'pull a first amount of current from the control panel system via the first connector when the received control signal is a first value, the first amount of current having a current level that does not indicate an alarm condition exists on the wired detection string; and', 'pull a second amount of current from the control panel system via the first connector when ...

BIFURCATED PROCESSOR HAZARD DETECTION SYSTEMS

Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold. 120-. (canceled)21. A hazard detection system , comprising:a plurality of safety sensors comprising a smoke sensor, a carbon monoxide sensor, and a heat sensor; communicate with the safety sensors; and', 'activate an alarm if any of the safety sensors detect a hazard event; and, 'a safety processor operative toa system processor operative to execute a plurality of user interface features,wherein the safety processor is characterized by relatively low power consumption and relatively limited processing power in comparison to that of the system processor, and wherein the safety processor is operative to independently activate the alarm regardless of whether the system processor is functioning.22. The system of claim 21 , further comprising at least one non-safety sensor claim 21 , wherein the system processor is operative to communicate with the least one non-safety sensor.23. The system of claim 21 , further comprising:first wireless communications circuitry characterized by relatively low power consumption and configured to wirelessly communicate according to a first protocol characterized by relatively low data rates;second wireless communications circuitry characterized by relatively high power consumption and configured to wirelessly communicate according to a second protocol characterized by relatively high data rates, wherein the system processor is operative to communicate with the first wireless communications circuitry ...

POWER MANAGEMENT IN HAZARD DETECTION SYSTEMS

Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold. 1. A battery powered hazard detection system , the system operative to function according to any one of a plurality of different modes , the system comprising:a DC power source; anda plurality of power-consuming components operative to consume power supplied by the DC power source, the power-consuming components comprising at least one processor, at least one sensor for detecting at least one of smoke, heat, and carbon-monoxide, first wireless communications circuitry characterized by relatively low power consumption and configured to wirelessly communicate according to a first protocol characterized by relatively low data rates, and second wireless communications circuitry characterized by relatively high power consumption and configured to wirelessly communicate according to a second protocol characterized by relatively high data rates;wherein at least one of the power consuming components is operative to enforce a power budgeting scheme so that the DC power source can power the system for a minimum operational lifetime, wherein the power budgeting scheme enables the system to operate according to any one of a plurality of different modes for a mode-specified run-time constraint during the minimum operational lifetime.2. The system of claim 1 , wherein the plurality of different modes comprises an idle mode claim 1 , a log update mode claim 1 , and an alarm mode.3. The system of claim 2 , wherein the plurality of different ...

LONG CYCLE-LIFE LITHIUM SULFUR SOLID STATE ELECTROCHEMICAL CELL

In a solid-state lithium-metal/sulfur-based battery cell, barriers to sulfur and polysulfide diffusion are included in or used as an ionically conductive electrolyte in the cathode or separator layers. During operation of the battery, the barrier materials are positioned to either 1) rapidly react with any free sulfur or lithium polysulfide species that are generated, forming stable carbon-sulfur bond(s) and preventing further migration of the sulfur or polysulfide species or 2) prevent the formation and diffusion of elemental sulfur or free lithium polysulfide species. Regardless of the identity of the sulfur/polysulfide species, the sulfur-containing species is prevented from diffusing to the anode and causing capacity fade and higher internal resistance to ion flow. 1. An electrochemical cell comprising a sulfur-bound cyclized polyacrylonitrile cathode active material;', 'an electronically conducting agent; and', 'a first polymer electrolyte that contains a first lithium salt;, 'a cathode comprisingwherein the sulfur-bound cyclized polyacrylonitrile, the electronically conducting agent, and the first polymer electrolyte are all mixed together to form the cathode;an anode comprising lithium; anda separator comprising a second polymer electrolyte and a second lithium salt, the separator positioned between the cathode and the anode, the separator providing ionic conduction between the cathode and the anode.2. The electrochemical cell of further comprising a layer of a third polymer electrolyte on a first surface of the cathode claim 1 , the first surface of the cathode facing the separator.3. The electrochemical cell of wherein the third polymer electrolyte comprises a polymer electrolyte selected from the group consisting of the first polymer electrolyte and the second polymer electrolyte.4. The electrochemical cell of wherein the first polymer electrolyte is a liquid claim 1 , and the cathode further comprises a binder.5. The electrochemical cell of claim 1 , ...

Vibration Sensing System and Method for Categorizing Portable Device Context and Modifying Device Operation

Disclosed herein are methods for operating a computing device including determining an amount of pressure exerted on a touch-sensitive surface of the computing device. According to the various embodiments, a touch input is received by the touch-sensitive surface. The amount of pressure exerted by the touch input on the touch-sensitive surface is then determined. The computing device operates in a first manner when a first amount of pressure is received and operates in a second manner when a second amount of pressure is received. 120-. (canceled)21. A portable electronic device , comprising:an enclosure defining a surface;a set of one or more sensors configured to detect a pressure applied to the surface; and receive a signal from a sensor of the set of one or more sensors, the received signal associated with the pressure applied to the surface;', 'identify a property of the received signal; and', 'determine, using the identified property of the received signal, that a user is applying a grip to the portable electronic device., 'a processor operably connected to the set of one or more sensors and configured to22. The portable electronic device of claim 21 , wherein the processor is further operable to modify an operation of the portable electronic device when it is determined that the user is applying the grip to the portable electronic device.23. The portable electronic device of claim 22 , further comprising a telephone module claim 22 , wherein the modified operation comprises a conditional answering of an incoming call received by the telephone module.24. The portable electronic device of claim 23 , wherein the modified operation comprises a modification of a ringtone produced by the telephone module.25. The portable electronic device of claim 24 , wherein the processor is further configured to:determine, using the identified property of the received signal, when no grip is applied to the portable electronic device; andincrease a volume of the ringtone produced ...

SYSTEMS AND METHODS FOR DETECTING WIRELESS COMMUNICATION JAMMING IN A NETWORK

An electronic device may include a processor and a network interface that may include a first radio and a second radio. The processor may be configured to perform wireless communication jamming attack detection by occasionally performing clear channel verification utilizing the network interface to determine whether a threshold number of devices' channels are incapacitated in a wireless network within a threshold amount of time and/or by sending a heartbeat signal from the first radio and determining whether the second radio received the heartbeat signal. 1. An electronic device , comprising:a power source configured to provide operational power to the electronic device;a network interface comprising a first radio and a second radio, at least one of the first radio and the second radio being configured to wirelessly communicate with one or more of a plurality of other electronic devices over at least one wireless channel per other electronic device; and occasionally perform clear channel verification utilizing the network interface and determine, based on the clear channel verification, whether a threshold number of the wireless channels are incapacitated within a threshold amount of time; or', 'send a heartbeat signal from the first radio and determine, based on whether the second radio received the heartbeat signal, whether a wireless channel over which the network interface of the electronic device is configured to wirelessly communicate is incapacitated; or', 'any combination thereof., 'a processor coupled to the power source and the network interface, the processor being configured to2. The electronic device of claim 1 , wherein the network interface comprises an out-of-band channel and the processor is configured to utilize the out-of-band channel to send a signal to a desired party if a wireless communication jamming attack is detected.3. The electronic device of claim 2 , wherein the out-of-band channel comprises a communication channel outside of the at ...

METHODS, SYSTEMS AND APPARATUS FOR DETERMINING WHETHER AN ACCESSORY INCLUDES PARTICULAR CIRCUITRY

Methods, systems, and apparatus for determining whether an accessory includes particular circuitry. A host device may measure a first voltage and a second voltage received from an accessory, where the voltages are provide through the accessory from a power source. Before measuring the second voltage, the host device may send an instruction to the accessory instructing the accessory to alter an impedance of the power path between the power source and the host device, and the host device may draw at least a threshold amount of current from the power source via the accessory. The host device may then determine whether the accessory includes particular circuitry based on the relationship between the first voltage and the second voltage. 1. A method of determining whether an accessory includes particular circuitry , comprising:measuring, at a host device coupled to an accessory, a first voltage received from the accessory, the first voltage being received via a power pin provided in the host device;sending, by the host device, an instruction to the accessory to alter an impedance, at the accessory, of a power path between a power source and the host device;measuring, at the host device, a second voltage received from the accessory, the second voltage being received via the power pin provided in the host device; anddetermining, by the host device, whether the accessory includes particular circuitry based on the relationship between the first voltage and the second voltage.2. The method of wherein determining whether the accessory includes particular circuitry comprises:determining that the accessory includes the particular circuitry if the first voltage is greater than the second voltage by at least a predetermined amount; anddetermining that the accessory does not include the particular circuitry if the first voltage is not greater than the second voltage by at least the predetermined amount.3. The method of further comprising:if the accessory is determined to include ...

Camera Assembly with Concave-Shaped Front Face

The various implementations described herein include a video camera assembly that includes: (1) a housing; (2) an image sensor positioned within the housing and having a field of view corresponding to a scene; and (3) a concave-shaped front face positioned in front of the image sensor such that light from the scene passes through the front face prior to entering the image sensor; where the front face has a concave shape that extends around an entirety of an outer periphery. 1. A camera assembly , comprising:a housing;an image sensor positioned within the housing and having a field of view corresponding to a scene; anda concave-shaped front face coupled to the housing and positioned in front of the image sensor such that light from the scene passes through the front face prior to entering the image sensor;wherein the front face has the concave shape that extends around an entirety of an outer periphery.2. The camera assembly of claim 1 , wherein the configuration of the housing and the front face is further configured to inhibit direct sunlight from entering the image sensor.3. The camera assembly of claim 1 , wherein the front face is configured to inhibit water accumulation on the front face while the camera assembly is oriented in a downward position.4. The camera assembly of claim 1 , wherein the housing and the front face are symmetrical around a central axis.5. The camera assembly of claim 1 , wherein the front face is further configured to inhibit water entry into the camera assembly.6. The camera assembly of claim 1 , wherein an outer surface of an inner section of the front face is substantially flat.7. The camera assembly of claim 1 , wherein an outer section of the front face is composed of a plastic; andwherein an inner section of the front face is composed of a glass.8. The camera assembly of claim 1 , wherein an inner section of the front face is bonded to an outer section of the front face via a waterproof adhesive.9. The camera assembly of claim 1 , ...

Vibration Sensing System and Method for Categorizing Portable Device Context and Modifying Device Operations

Disclosed herein are methods for operating a computing device including determining an amount of pressure exerted on a touch-sensitive surface of the computing device. According to the various embodiments, a touch input is received by the touch-sensitive surface. The amount of pressure exerted by the touch input on the touch-sensitive surface is then determined. The computing device operates in a first manner when a first amount of pressure is received and operates in a second manner when a second amount of pressure is received.

Oxyphosphorus-containing polymers as binders for battery cathodes

A class of polymeric phosphorous esters can be used as binders for battery cathodes. Metal salts can be added to the polymers to provide ionic conductivity. The polymeric phosphorous esters can be formulated with other polymers either as mixtures or as copolymers to provide additional desirable properties. Examples of such properties include even higher ionic conductivity and improved mechanical properties. Furthermore, cathodes that include the polymeric phosphorous esters can be assembled with a polymeric electrolyte separator and an anode to form a complete battery.

COATED PARTICLES FOR LITHIUM BATTERY CATHODES

Particles of cathodic materials are coated with polymer to prevent direct contact between the particles and the surrounding electrolyte. The polymers are held in place either by a) growing the polymers from initiators covalently bound to the particle, b) attachment of the already-formed polymers by covalently linking to functional groups attached to the particle, or c) electrostatic interactions resulting from incorporation of cationic or anionic groups in the polymer chain. Carbon or ceramic coatings may first be formed on the surfaces of the particles before the particles are coated with polymer. The polymer coating is both electronically and ionically conductive. 2. The material of wherein the positive electrode active material is selected from the group consisting of layered LiMO—LiMO(M=Mn claim 1 , Co or Ni) claim 1 , concentration-gradient LiMO(M=Mn claim 1 , Co or Ni) claim 1 , LiNiCoAlO claim 1 , and spinel-LiNiMnO claim 1 , LiNiPO claim 1 , LiMnFePO claim 1 , LiCoPO claim 1 , spinel-LiMnO claim 1 , LiNiCoMnO(x+y+z=1) claim 1 , LiCoO claim 1 , LiNiOand LiMnO.3. The material of claim 1 , wherein the material further comprises one or more intervening layer(s) positioned between the positive electrode particle and the polymer layer.4. The material of wherein the intervening layer(s) comprise one or more selected from the group consisting of graphite claim 3 , carbon nanotubes claim 3 , amorphous carbon claim 3 , lithium single-ion conductors claim 3 , LiPON claim 3 , LiSICON claim 3 , LiCoO claim 3 , lithium iron phosphate claim 3 , aluminum claim 3 , copper claim 3 , silica claim 3 , alumina claim 3 , zirconia claim 3 , aluminum fluoride claim 3 , and lithium phosphate.5. The material of wherein the polymer layer further comprises lithium salts and/or dopants.6. The material of wherein the first polymer comprises are one or more selected from the group consisting of polyphosphates claim 1 , high-voltage-stable polymers claim 1 , ionically conductive high- ...

DATA DRIVEN/PHYSICAL HYBRID MODEL FOR SOC DETERMINATION IN LITHIUM BATTERIES

A hybrid model to determine state-of-charge for lithium batteries includes both a physical model and an empirical or data-driven model. The physical model is an electrochemical model, based on the battery materials properties and structure and describes dynamic electrochemical reactions. The empirical model uses coulomb counting and a relaxation filter, plus a Kalman filter for adaptive compensation of the system parameters. In some SOC regimes, one model is strongly favored over the other. In some SOC regions, a weighted combination of the two models is used. 1. A method of determining state of charge (SOC) for a rechargeable battery cell at various times tthroughout the discharge portion the cell's cycle comprising the steps of:a) fully charging a battery cell comprising lithium metal as an anode, lithium iron phosphate as a cathode, and a polymer electrolyte as a separator so that SOC is 100%;{'sub': x', 'n', 'n', 'n', 'n, 'b) discharging the cell over a period of time twhile also recording in a memory location voltage(t), temperature(t) and Coulombs(t) passed at various times, t(n=1, 2, 3, . . . x) during the discharging'}{'sub': n', 'n, 'c) using a computer processor to determine an input SOC(t) based on the Coulombs at time tif this is the first time determining a refined SOC;'}{'sub': n', 'n', 'n', 'n', 'n, 'claim-text': [{'sub': 'n', 'i. when the input SOC(t) is between about 100% and 15%, a first refining SOC algorithm is used;'}, {'sub': 'n', 'ii. when the input SOC(t) is between about 5% and 0%, a second SOC refining algorithm is used; and'}, {'sub': 'n', 'iii. when the input SOC(t) is between about 15% and 5%, an individually weighted combination of the first refining SOC algorithm and second SOC refining algorithm is used;'}], 'd) using the input SOC(t), the Coulombs(t), and the voltage(t) and the temperature(t) as input into a SOC refining algorithm run thorough a computer processer to determine a refined SOC(t), wherein the SOC refining algorithm is ...

Protection circuitry for reversible connectors

An electronic device may include a connector port that accommodates reversible connector plugs. The connector port may include protection circuitry that protects other components in the electronic device from undesired power supply voltages. The protection circuitry may form a first branch and a second branch opposite to the first branch. The protection circuitry may receive control signals from power polarity detection circuitry. The power polarity detection circuitry may detect the presence of power supply voltages at the first branch and the second branch. In response to detecting the presence of a power supply voltage at a given branch, the power polarity detection circuitry may disable a power supply signal path through the opposite branch and enable a power supply signal path through the given branch.

TECHNIQUES FOR CONFIGURING CONTACTS OF A CONNECTOR

Systems and methods for configuring contacts of a first connector includes detecting mating of a second connector with the first connector and in response to the detection, sending a command over one of the contacts and waiting for a response to the command. If a valid response to the command is received, the system determines the orientation of the second connector. The response also includes configuration information for contacts in the second connector. The system then configures some of the other contacts of the first connector based on the determined orientation and configuration information of the contacts of the second connector. 1. An electronic device comprising:a first connector configured to be mated with a second connector in a second electronic device, the first connector comprising a plurality of contacts including first and second data contacts and a third contact;an identification module storing contact configuration information comprising a plurality of bits that identifies a first communication protocol used by the electronic device to communicate with the second electronic device over the first and second data contacts, the identification module being configured to: (i) receive a request from the second electronic device over the third contact to send contact configuration information identifying the communication protocol used on the first and second data contacts, and (ii) in response to the request, send the contact configuration information to the second electronic device over the third contact; andfirst communication circuitry, coupled to the first and second data contacts, that enables the electronic device to communicate with the second electronic device using the first communication protocol over the first and second data contacts.2. The electronic device according to wherein the third contact can be used by the electronic device for multiple functions.3. The electronic device according to wherein the request received from the second ...

Microphone Line Based Detection of Headset Plug Removal

Embodiments of the invention include methods, apparatus, systems and means for distinguishing between microphone line signals resulting from: actuation of a microphone button of a headset plugged into a telephone device jack, and removal of the headset plug form the jack. During a telephone call, a first signal can be detected on a microphone line of a headset jack to indicate whether a microphone button of the headset is actuated. Also, while the headset plug is being disconnected from the jack, a transition on the microphone line can be detected, from a second signal indicating that the microphone is being disconnected, to a third signal indicating that the microphone button is actuated. Consequently, to avoid erroneously hanging up a call, transitions to the third signal when removing the plug form the jack can be ignored and the call can be maintained. Other embodiments are also described and claimed. 1. (canceled)2. A method for operating a telephone device having a headset jack to connect with a headset plug of a headset , the headset having a microphone and a microphone button , the method comprising:during a telephone call and with the microphone electrically connected to a signal line of the headset jack, detecting a first signal on the signal line;after detecting the first signal, detecting on the signal line a second signal that is different from the first signal;determining whether the second signal equals or exceeds a first threshold or equals or is less than a second threshold, wherein the second threshold is less than the first threshold;if the second signal equals or is less than the first threshold, maintaining the telephone call.3. The method as in claim 2 , further comprising determining whether the second signal equals or exceeds a second threshold claim 2 , wherein the first signal is less than the second threshold and greater than the first threshold.4. The method as in claim 2 , further comprising:detecting whether the second signal equals or ...

Vibration Sensing System and Method for Categorizing Portable Device Context and Modifying Device Operation

Disclosed herein are methods for operating a computing device including determining an amount of pressure exerted on a touch-sensitive surface of the computing device. According to the various embodiments, a touch input is received by the touch-sensitive surface. The amount of pressure exerted by the touch input on the touch-sensitive surface is then determined. The computing device operates in a first manner when a first amount of pressure is received and operates in a second manner when a second amount of pressure is received.

METHODS, SYSTEMS AND APPARATUS FOR ENABLING AN ACCESSORY FOR USE WITH A HOST DEVICE

Methods, systems, and apparatus for enabling a power path between a power source and a host device via an accessory. A host device may send, to an accessory arranged within the power path, via a first data pin arranged in the host device, a request for an accessory identifier. The accessory identifier identifies the accessory. The host device may then determine whether the accessory identifier is received from the accessory within a specified period of time or whether a received accessory identifier is valid. If the accessory identifier is not received from the accessory within the specified period of time, or a received accessory identifier is not valid, the host device sends a new request for the accessory identifier to the accessory via a second data pin different than the first data pin. 1. A method of enabling a power path between a power source and a host device through an accessory device coupled between the power source and the host device , the accessory including a power pin and a data pin , the method comprising:receiving a request comprising a first plurality of bits at the accessory device from the host device over the data pin for an accessory identifier that identifies the accessory;determining, at the accessory device, that the request for the accessory identifier is valid; andif the received request for an accessory identifier is valid, sending a response comprising a second plurality of bits that communicates the accessory identifier from the accessory device to the host device over the data pin, and enabling, at the accessory device, a power path between a power source and the host device.2. The method of further comprising:receiving an instruction, comprising a third plurality of bits, to alter an impedance of the power path, from the host device over the data pin after the power path is enabled; andin response to receiving the instruction, altering the impedance of the power path.3. The method of further comprising:prior to receiving the request ...

Event Based Recording

An electronic device comprises an image sensor, one or more processors, and memory storing instructions for receiving an event recording profile based on configuration data of the electronic device, the configuration data including a location type or a power type; receiving a plurality of images of a scene captured by the image sensor; detecting a trigger event based on one or more of the plurality of images of the scene; in response to detecting the trigger event, identifying an object of interest in one or more of the plurality of images of the scene; creating an event clip from the stored images that include the object of interest, wherein creating the event clip includes configuring a clip length based on the event recording profile; and providing the event clip for display. 1. A method , comprising:receiving an event recording profile for an electronic device, wherein the event recording profile is based on configuration data of the electronic device, the configuration data including a location type or a power type;receiving a plurality of images of a scene captured by one or more image sensors of the electronic device;detecting a trigger event based on one or more of the plurality of images of the scene;in response to detecting the trigger event, identifying an object of interest in one or more of the plurality of images of the scene;creating an event clip from the stored images that include the object of interest, wherein creating the event clip includes configuring a clip length based on the event recording profile; andproviding the event clip for display.2. The method of claim 1 , wherein configuring the clip length includes setting a padding value claim 1 , an inactivity threshold claim 1 , and/or a maximum event length.3. The method of claim 1 , wherein:configuring the clip length includes selecting a padding value;the padding value corresponds to a number of obtained images preceding the one or more of the plurality of images which include the detected ...

Doorbell Camera

This application is directed to a doorbell camera for illuminating and capturing scenes. The doorbell camera includes at least a subset of processors for operating a camera module, an image sensor having a field of view of a scene and configured to capture video of a portion of the scene, one or more infrared (IR) illuminators for providing illumination, a waterproof button assembly, and a microphone and a speaker for enabling a real-time conversation between a visitor located at the doorbell camera and a user of a remote client device. The waterproof button assembly is configured to receive a user press on a button top, block water from entering the electronic device, and display a visual pattern uniformly at a peripheral region of the button assembly using LEDs and light guide component that are disposed under the button top.

Communication and monitoring of a battery via a single wire

A power-management unit is described. This power-management unit allows a common signal line to communicate data between an integrated circuit (which may be external to the power-management unit) and a battery-monitoring mechanism in a battery pack, and to convey a signal that represents a temperature state of the battery pack to a temperature-monitoring circuit or mechanism that monitors the temperature state of the battery pack. In particular, the power-management unit may include a single-wire interface or a multiplexer that, at a given time, selectively couples the signal line from the battery pack either to the integrated circuit or the temperature-monitoring circuit based on a control signal provided by the integrated circuit (for example, via an I2C bus or interface). In this way, the power-management unit may reduce the number of signal lines needed to communicate with the battery-monitoring mechanism and to convey the signal.

Determination of nominal cell resistance for real-time estimation of state-of-charge in lithium batteries

A functional relation relationship has been established between SOC, nominal resistance (R nom ) and average applied load (P avg ), such that a function f(R nom , P avg )=SOC can be determined empirically. Load can be described using either average power or average current. The cell is tested initially to determine the relationships among these values prior to operation to create a look-up table. During operation, R nom and P avg can be sampled with no cell down time and can be used as input parameters with the look-up table to determine SOC accurately.

VIDEO ANALYTICS SYSTEM

A security system can use video analytics and/or other input parameters to identify a theft event. Optionally, the security system can take remedial action in response. For example, the security system can use video analytics to determine that a person has reached into a shelf multiple times at a rate above a threshold, which can indicate that a thief is quickly removing items from the shelf. The security system can also use video analytics to determine that a person has reached into a shelf via a sweeping action, which can indicate that a thief is gathering and removing a large quantity of items from the shelf in one motion. In response, the security system can alert security personnel, cause a speaker to output an audible message in the target area, flag portions of the video relating to the theft event, activate or ready other sensors or systems, and/or the like. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. (canceled)18. (canceled)19. (canceled)20. (canceled)21. (canceled)22. A system comprising:at least one camera positioned to produce video footage of a region of a retail store that includes a monitored area; a hardware processor; and', receive the video footage of the region of the retail store that includes the monitored area;', 'process the video footage to identify breaches into the monitored area;', 'determine an event by at least identifying a number of breaches that satisfies the threshold breach count value at times within the threshold breach time value; and', 'issue a notification in response to the determination of the event., 'non-transitory computer-readable memory in communication with the hardware processor, the memory containing a threshold breach count value, a threshold breach time value, and instructions executable by the processor to cause the controller to], 'a ...

Doorbell Camera

This application is directed to a doorbell camera for illuminating and capturing scenes. The doorbell camera includes at least a subset of processors for operating a camera module, an image sensor having a field of view of a scene and configured to capture video of a portion of the scene, one or more infrared (IR) illuminators for providing illumination, a waterproof button assembly, and a microphone and a speaker for enabling a real-time conversation between a visitor located at the doorbell camera and a user of a remote client device. The waterproof button assembly is configured to receive a user press on a button top, block water from entering the electronic device, and display a visual pattern uniformly at a peripheral region of the button assembly using LEDs and light guide component that are disposed under the button top. 1. A doorbell device , comprising:a device housing having an elongated shape with a first rounded end and a second rounded end opposite the first rounded end, wherein the device housing further includes a top half portion having the first rounded end and a bottom half portion extending from the top half portion and having the second rounded end;a button assembly positioned in the bottom half portion of the device housing and near the second rounded end, wherein the button assembly includes a button top and a light ring assembly, and the light ring assembly is configured to display a light ring surrounding the button top, and wherein the button assembly is configured to initiate at least one of a chime and a wireless notification message in response to a press on the button top; anda camera module positioned in the top half portion of the device housing and near the first rounded end.2. The doorbell device of claim 1 , wherein the device housing includes a front cover plate having a bottom opening located near the second rounded end claim 1 , and the button top is exposed from the bottom opening claim 1 , and wherein the device housing has a ...

Sprinkler Extension Device

A sprinkler extension device is disclosed to adjust a height of an existing pop-up sprinkler installed in the ground. An example sprinkler extension device includes an extension riser configured to mate on a first end to a sprinkler riser. The extension riser is further configured to mate on a second end to a spray cap of the existing pop-up sprinkler installed in the ground. The example sprinkler extension device also includes an extension coupling configured to mate on a first end to a sprinkler housing. The extension coupling is further configured to mate on a second end to a sprinkler head of the existing pop-up sprinkler installed in the ground. 1. A sprinkler extension device , comprising:an extension riser configured to mate on a first end to a sprinkler riser, and the extension riser further configured to mate on a second end to a spray cap; andan extension coupling configured to mate on a first end to a sprinkler housing, and the extension coupling further configured to mate on a second end to a sprinkler head.2. The sprinkler extension device of claim 1 , further comprising an annular recess formed within the extension coupling claim 1 , the annular recess configured to retain a first end of a spring therein.3. The sprinkler extension device of claim 2 , wherein the annular recess is formed between an inner wall and an outer wall in the extension coupling.4. The sprinkler extension device of claim 1 , further comprising at least one ridge on an outside wall of the extension coupling.5. The sprinkler extension device of claim 4 , wherein the at least one ridge is formed integral with the outside wall of the extension coupling.6. The sprinkler extension device of claim 1 , further comprising a plurality of ridges spaced around an outer perimeter of the extension coupling.7. The sprinkler extension device of claim 1 , wherein the extension riser has an outer diameter equal to an outer diameter of the sprinkler riser.8. The sprinkler extension device of claim ...

Relaxation model in real-time estimation of state-of-charge in lithium polymer batteries

Relaxation time constants give valuable information about a lithium polymer battery cell's state-of-charge. Moreover, determination of these time constants can be performed in real time by fitting exponential functions to transient voltage or current patterns.

BEHAVIORAL INTRUSION DETECTION SYSTEM

A security system can use video analytics and/or other input parameters to identify a theft event. Optionally, the security system can take remedial action in response. For example, the security system can use video analytics to determine that a person has reached into a shelf multiple times at a rate above a threshold, which can indicate that a thief is quickly removing items from the shelf. The security system can also use video analytics to determine that a person has reached into a shelf via a sweeping action, which can indicate that a thief is gathering and removing a large quantity of items from the shelf in one motion. In response, the security system can alert security personnel, cause a speaker to output an audible message in the target area, flag portions of the video relating to the theft event, activate or ready other sensors or systems, and/or the like. 121.-. (canceled)22. A system comprising:a camera positioned to produce video footage of a region that includes a monitored area; a hardware processor; and', receive the video footage from the camera;', 'process the video footage at the video processing frame rate by comparing at least a first processed image frame to a second processed image frame that are successive image frames at the video processing frame rate, and by comparing at least a third processed image frame to a fourth processed image that are successive image frames at the video processing frame rate;', 'compare a first group of pixels at a first location in the first processed image frame to a second group of pixels at the first location in the second processed image frame, wherein a size of the first group of pixels and the second group of pixels is based at least in part on the grid size value;', 'identify changed pixels by determining which pixels in the first and second groups of pixels changed from the first processed image frame to the second processed image frame by at least the pixel change threshold value;', 'identify a first ...

ACRYLATE POLYMERS WITH DICARBONYL PENDANT GROUPS AS ELECTROLYTES FOR LITHIUM ION BATTERIES

New acrylate-based polymers with dicarbonyl pendant groups have been synthesized. When these polymers are combined with electrolyte salts, such polymer electrolytes have shown excellent electrochemical oxidation stability in lithium battery cells. Their stability along with their excellent ionic transport properties make them especially suitable as electrolytes in high energy density lithium battery cells. 2. The polymer of further comprising an electrolyte salt claim 1 , wherein the polymer is an electrolyte.3. The polymer of further comprising ceramic electrolyte particles.4. The polymer of wherein the polymer is crosslinked.5. The polymer of further comprising an electrolyte salt claim 4 , wherein the polymer is an electrolyte.6. A positive electrode comprising:a positive electrode active material; and{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'a catholyte comprising the electrolyte according to ;'}wherein the positive electrode active material particles and the catholyte are mixed together.7. The positive electrode of wherein the catholyte further comprises a solid polymer electrolyte.8. The positive electrode of wherein the catholyte further comprises ceramic electrolyte particles.9. The positive electrode of wherein the catholyte is crosslinked.10. The positive electrode of wherein the positive electrode active material is selected from the group consisting of lithium iron phosphate claim 6 , lithium metal phosphate claim 6 , divanadium pentoxide claim 6 , lithium nickel cobalt aluminum oxide claim 6 , lithium nickel cobalt manganese oxide claim 6 , magnesium-rich lithium nickel cobalt manganese oxide claim 6 , lithium manganese spinel claim 6 , lithium nickel manganese spinel claim 6 , and combinations thereof.11. The positive electrode of wherein the electrolyte salt is a lithium salt.12. An electrochemical cell claim 6 , comprising:an anode configured to absorb and release lithium ions;a cathode comprising cathode active material particles, an ...

Doorbell Camera

This application is directed to a doorbell camera for illuminating and capturing scenes. The doorbell camera includes at least a subset of processors for operating a camera module, an image sensor having a field of view of a scene and configured to capture video of a portion of the scene, one or more infrared (IR) illuminators for providing illumination, a waterproof button assembly, and a microphone and a speaker for enabling a real-time conversation between a visitor located at the doorbell camera and a user of a remote client device. The waterproof button assembly is configured to receive a user press on a button top, block water from entering the electronic device, and display a visual pattern uniformly at a peripheral region of the button assembly using LEDs and light guide component that are disposed under the button top.

MONITORING SYSTEMS

A system can use a video analytic algorithm and/or other input parameters to identify an event (e.g., theft). Optionally, the system can take action in response. For example, the security system can use video analytics to determine that a person has reached into a shelf multiple times at a rate above a threshold, which can indicate that a thief is quickly removing items from the shelf. A monitoring system can monitor other areas for breaches, such as an entrance to a store or residence. Monitoring entrances and/or exits can be used to determine occupancy, or to determine rush events to prompt customer service action, such as opening additional point of sale stations. 1. A method for setting up a system for tracking occupancy of an area , the method comprising:positioning a first camera to produce video footage of a first entrance or exit for the area;positioning a second camera to produce video footage of a second entrance or exit for the area;establishing communication between the first camera and a controller so that the first camera sends the video footage of the first entrance or exit to the controller;establishing communication between the second camera and the controller so that the second camera sends the video footage of the second entrance or exit to the controller;accessing at least one image from the first camera and using a user interface to designate the first entrance or exit;accessing at least one image from the second camera and using the user interface to designate the second entrance or exit; andsetting an occupancy threshold value; analyze the video footage from the first camera to identify entrance events when persons enter through the first entrance or exit;', 'analyze the video footage from the first camera to identify exit events when persons exit through the first entrance or exit;', 'analyze the video footage from the second camera to identify exit events when persons exit through the first entrance or exit;', 'analyze the video footage from ...

MONITORING SYSTEMS

A system can use a video analytic algorithm and/or other input parameters to identify an event (e.g., theft). Optionally, the system can take action in response. For example, the security system can use video analytics to determine that a person has reached into a shelf multiple times at a rate above a threshold, which can indicate that a thief is quickly removing items from the shelf. A monitoring system can monitor other areas for breaches, such as an entrance to a store or residence. Monitoring entrances and/or exits can be used to determine occupancy, or to determine rush events to prompt customer service action, such as opening additional point of sale stations. 155.-. (canceled)56. A system comprising:a camera positioned to produce video footage of a region that includes an entrance of a retail store; a hardware processor; and', receive the video footage from the camera;', 'analyze the video footage from the camera to identify entrance events when persons enter the retail store through the entrance;', 'determine a customer rush event by at least identifying a number of entrance events that satisfies the threshold entrance count value within an amount of time that satisfies the threshold entrance time value; and', 'provide a customer service notification in response to the determination of the customer rush event., 'non-transitory computer-readable memory in communication with the hardware processor, the memory containing a threshold entrance count value, a threshold entrance time value, and instructions executable by the processor to cause the controller to], 'a controller comprising57. The system of claim 56 , wherein the instructions are executable by the processor to cause the controller to wait a delay amount of time after determining the customer rush event and to provide the customer service notification after the delay amount of time.58. The system of claim 57 , wherein the delay amount of time is between about 1 minute and about 30 minutes.59. The ...

Microphone line based detection of headset plug removal

Embodiments of the invention include methods, apparatus, systems and means for distinguishing between microphone line signals resulting from: actuation of a microphone button of a headset plugged into a telephone device jack, and removal of the headset plug form the jack. During a telephone call, a first signal can be detected on a microphone line of a headset jack to indicate whether a microphone button of the headset is actuated. Also, while the headset plug is being disconnected from the jack, a transition on the microphone line can be detected, from a second signal indicating that the microphone is being disconnected, to a third signal indicating that the microphone button is actuated. Consequently, to avoid erroneously hanging up a call, transitions to the third signal when removing the plug form the jack can be ignored and the call can be maintained. Other embodiments are also described and claimed.

Doorbell camera

This application is directed to a doorbell camera for illuminating and capturing scenes. The doorbell camera includes at least a subset of processors for operating a camera module, an image sensor having a field of view of a scene and configured to capture video of a portion of the scene, one or more infrared (IR) illuminators for providing illumination, a waterproof button assembly, and a microphone and a speaker for enabling a real-time conversation between a visitor located at the doorbell camera and a user of a remote client device. The waterproof button assembly is configured to receive a user press on a button top, block water from entering the electronic device, and display a visual pattern uniformly at a peripheral region of the button assembly using LEDs and light guide component that are disposed under the button top.

Bifurcated processor hazard detection systems

Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold.

Techniques for configuring contacts of a connector

Systems and methods for configuring contacts of a first connector includes detecting mating of a second connector with the first connector and in response to the detection, sending a command over one of the contacts and waiting for 5 a response to the command. If a valid response to the command is received, the system determines the orientation of the second connector. The response also includes configuration information for contacts in the second connector. The system then configures some of the other contacts of the first connector based on the determined orientation and configuration information of the contacts of the second 10 connector.

Bifurcated processor hazard detection systems

Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold.

Techniques for configuring contacts of a connector

Methods, systems and apparatus for determining whether an accessory includes particular circuitry

Methods, systems, and apparatus for determining whether an accessory includes particular circuitry. A host device may measure a first voltage and a second voltage received from an accessory, where the voltages are provide through the accessory from a power source. Before measuring the second voltage, the host device may send an instruction to the accessory instructing the accessory to alter an impedance of the power path between the power source and the host device, and the host device may draw at least a threshold amount of current from the power source via the accessory. The host device may then determine whether the accessory includes particular circuitry based on the relationship between the first voltage and the second voltage. MEASURE A FIRST VOLTAGE RECEIVED FROM AN ACCESSORY 422 SEND AN INSTRUCTION TO THE ACCESSORY TO ALTER AN IMPEDANCE, AT THE ACCESSORY, OF A POWER PATH BETWEEN A POWER SOURCE AND A HOST DEVICE SINK CURRENT FROM THE POWER SOURCE VIA THE ACCESSORY MEASURE A SECOND VOLTAGE RECEIVED FROM THE ACCESSORY N FIRST VOLTAGE > SECOND VOLTAGE? ACCESSORY DOES NOT INCLUDE POWER LIMITING CIRCUITRY Y ACCESSORY INCLUDES POWER LIMITING CIRCUITRY

Communication and monitoring of a battery via a single wire

A power-management unit is described. This power-management unit allows a common signal line to communicate data between an integrated circuit (which may be external to the power-management unit) and a battery-monitoring mechanism in a battery pack, and to convey a signal that represents a temperature state of the battery pack to a temperature-monitoring circuit or mechanism that monitors the temperature state of the battery pack. In particular, the power-management unit may include a single-wire interface or a multiplexer that, at a given time, selectively couples the signal line from the battery pack either to the integrated circuit or the temperature-monitoring circuit based on a control signal provided by the integrated circuit (for example, via an I2C bus or interface). In this way, the power-management unit may reduce the number of signal lines needed to communicate with the battery-monitoring mechanism and to convey the signal.

Techniques for detecting removal of a connector

Methods, systems and devices for determining if an accessory has a particular circuit

Verfahren, Systeme und Vorrichtungen zum Feststellen, ob ein Zubehör die bestimmte Schaltung aufweist. Eine Hostvorrichtung kann eine erste Spannung und eine zweite Spannung messen, die von einem Zubehör empfangen wurden, wo die Spannungen durch das Zubehör von einer Energiequelle bereitgestellt sind. Vor dem Messen der zweiten Spannung kann die Hostvorrichtung eine Anweisung an das Zubehör senden und das Zubehör dazu anweisen eine Impedanz des Energiepfads zwischen der Energiequelle und der Hostvorrichtung zu ändern, und die Hostvorrichtung kann zumindest eine Schwellwertmenge von der Energiequelle über das Zubehör beziehen. Die Hostvorrichtung kann dann feststellen, ob das Zubehör die bestimmte Schaltung aufweist, basierend auf der Beziehung zwischen der ersten Spannung und der zweiten Spannung. Methods, systems and devices for determining if an accessory has the particular circuit. A host device may measure a first voltage and a second voltage received from an accessory where the voltages from the accessory are provided by a power source. Before measuring the second voltage, the host device may send an instruction to the accessory and instruct the accessory to change an impedance of the energy path between the power source and the host device, and the host device may acquire at least a threshold amount from the power source via the accessory. The host device may then determine whether the accessory has the particular circuit based on the relationship between the first voltage and the second voltage.

Bifurcated processor hazard detection systems

Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold.

Portable thermal seat cover

A portable seat cover that retains a user's thermal energy, and reemits the thermal energy back to the user to negate the need for a thermal energy source. The seat cover overlays an outdoor chair or bench through a pair of flaps that join together. The seat cover include a panel of insulation that has suficient heat capacity to retain the user's thermal energy, and reemit the thermal energy from the thermal cover back onto the user. The insulation positions inside an external cover, and is comprised of two layers of double bubble polyethylene sandwiched between a metalized aluminum film. The insulation may include an aluminum lightweight, space age design that integrates closed cell foam and reflective technology with a protective poly coating within multiple thin layers. The seat cover is rolled up into a cylindrical shape with elastic bands that attach to the ends of the seat cover.

Monitoring systems

Data structures for facilitating communication between a host device and an accessory

Computer readable storage mediums, electronic devices, and accessories having stored thereon data structures. A data structure includes a pin selection field operable to identify a connector pin and cause a host device to select one of a plurality of communication protocols for communicating with an accessory over the identified connector pin. The data structure also includes an accessory capability field defining an accessory identifier that uniquely identifies the accessory.

Monitoring systems

Data structures for facilitating communication between a host device and an accessory

Computer readable storage mediums, electronic devices, and accessories having stored thereon data structures. A data structure includes a pin selection field operable to identify a connector pin and cause a host device to select one of a plurality of communication protocols for communicating with an accessory over the identified connector pin. The data structure also includes an accessory capability field defining an accessory identifier that uniquely identifies the accessory.

Shielding structures for wireless electronic devices with displays

Electronic devices such as computers and handheld devices are provided. The electronic devices may have electrical components such as displays that are driven by driver circuitry. During operation, the driver circuitry may generate radio-frequency noise. Communications circuitry in the electronic devices may be shielded from the radio-frequency noise by radio-frequency shielding structures. The shielding structures may be mounted on portions of the display module, on a cover glass layer, or on other structures such as housing structures. The radio-frequency shielding structures may be formed from one or more metal segments. The metal segments may run along edges of the display. A device housing may have a ground formed from a conductive peripheral member that runs around peripheral edges of the housing and a conductive plate that is connected to the conductive peripheral member. The radio-frequency shielding structure may be connected to the ground using conductive structures.

Microphone line based detection of headset plug removal

Embodiments of the invention include methods, apparatus, systems and means for distinguishing between microphone line signals resulting from: actuation of a microphone button of a headset plugged into a telephone device jack, and removal of the headset plug form the jack. During a telephone call, a first signal can be detected on a microphone line of a headset jack to indicate whether a microphone button of the headset is actuated. Also, while the headset plug is being disconnected from the jack, a transition on the microphone line can be detected, from a second signal indicating that the microphone is being disconnected, to a third signal indicating that the microphone button is actuated. Consequently, to avoid erroneously hanging up a call, transitions to the third signal when removing the plug form the jack can be ignored and the call can be maintained. Other embodiments are also described and claimed.

Techniques for configuring contacts of a connector

Systems and methods for configuring contacts of a first connector includes detecting mating of a second connector with the first connector and in response to the detection, sending a command over one of the contacts and waiting for a response to the command. If a valid response to the command is received, the system determines the orientation of the second connector. The response also includes configuration information for contacts in the second connector. The system then configures some of the other contacts of the first connector based on the determined orientation and configuration information of the contacts of the second connector.

Microphone line based detection of headset plug removal

Embodiments of the invention include methods, apparatus, systems and means for distinguishing between microphone line signals resulting from: actuation of a microphone button of a headset plugged into a telephone device jack, and removal of the headset plug form the jack. During a telephone call, a first signal can be detected on a microphone line of a headset jack to indicate whether a microphone button of the headset is actuated. Also, while the headset plug is being disconnected from the jack, a transition on the microphone line can be detected, from a second signal indicating that the microphone is being disconnected, to a third signal indicating that the microphone button is actuated. Consequently, to avoid erroneously hanging up a call, transitions to the third signal when removing the plug form the jack can be ignored and the call can be maintained. Other embodiments are also described and claimed.

Roof anchor

A roof anchor including a pair of blocks positioned side-by-side. The blocks have adjacent, inner surfaces with notches cut therefrom for receiving a standing seam of a metal roof. The blocks also have outer surfaces remote from the inner surfaces. A bracket is positioned over the pair of blocks. The bracket includes a base portion having a pair of legs, each being positioned adjacent a respective one of the outer surfaces of the blocks, and a crosspiece, positioned adjacent the tops of the blocks, joining the legs together. A loop portion is affixed to the base portion for securement of a workman's safety lanyard. A threaded fastener penetrates the pair of blocks and the pair of legs for: fastening the pair of blocks together, securing the bracket to the pair of blocks, and clamping the pair of blocks upon a standing seam of a metal roof.

Acrylate polymers with dicarbonyl pendant groups as electrolytes for lithium ion batteries

New acrylate-based polymers with dicarbonyl pendant groups have been synthesized. When these polymers are combined with electrolyte salts, such polymer electrolytes have shown excellent electrochemical oxidation stability in lithium battery cells. Their stability along with their excellent ionic transport properties make them especially suitable as electrolytes in high energy density lithium battery cells.

Data structures for facilitating communication between a host device and an accessory

Computer readable storage mediums, electronic devices, and accessories having stored thereon data structures. A data structure includes a pin selection field operable to identify a connector pin and cause a host device to select one of a plurality of communication protocols for communicating with an accessory over the identified connector pin. The data structure also includes an accessory capability field defining an accessory identifier that uniquely identifies the accessory. 1 08a Fig. IA 1 08b Fig. 1lB

Three dimensional passive multi-component structures

Monitoring systems

A system can use a video analytic algorithm and/or other input parameters to identify an event (e.g., theft). Optionally, the system can take action in response. For example, the security system can use video analytics to determine that a person has reached into a shelf multiple times at a rate above a threshold, which can indicate that a thief is quickly removing items from the shelf. A monitoring system can monitor other areas for breaches, such as an entrance to a store or residence. Monitoring entrances and/or exits can be used to determine occupancy, or to determine rush events to prompt customer service action, such as opening additional point of sale stations.

Techniques for detecting removal of a connector

A system that detects electrical disconnection of one connector from another connector includes a detection circuitry and a protection circuitry. The detection circuitry detects that a plug connector has been electrically disconnected from a corresponding receptacle connector. In response to the detection, the detection circuitry sends a signal to the protection circuitry. In response to the signal, the protection circuitry lowers or terminates power being supplied to a host device via one of the contacts of the plug connector. This helps to prevent shocks/shorts that may be caused by accidental disconnection of the plug connector. 63781784 vI

Camera assembly with concave-shaped front face

The various implementations described herein include a video camera assembly that includes: (1) a housing; (2) an image sensor positioned within the housing and having a field of view corresponding to a scene in the smart home environment; and (3) a concave-shaped front face positioned in front of the image sensor such that light from the scene passes through the front face prior to entering the image sensor; where the front face includes: (a) an inner section corresponding to the image sensor; and (b) an outer section between the housing and the inner section, the outer section having a concave shape that extends from an outer periphery of the outer section to an inner periphery of the outer section; and where the concave shape extends around an entirety of the outer periphery.

Techniques for detecting a removal of a connector

Ein System, das ein elektrisches Trennen eines Verbinders von einem anderen Verbinder detektiert, umfasst eine Detektorschaltung und eine Schutzschaltung. Die Detektorschaltung detektiert, dass ein Stecker elektrisch von einer entsprechenden Steckerbuchse getrennt wurde. In Reaktion auf die Detektion sendet die Detektorschaltung ein Signal an die Schutzschaltung. In Reaktion auf das Signal senkt oder terminiert die Schutzschaltung Leistung, die einem Hostgerät über einen der Kontakte des Steckers bereitgestellt wird. Dies hilft, Schläge/Kurzschlüsse zu verhindern, die durch eine unbeabsichtigte Trennung des Steckers verursacht werden können. A system that detects electrical disconnection of a connector from another connector includes a detector circuit and a protection circuit. The detector circuit detects that a plug has been electrically disconnected from a corresponding receptacle. In response to the detection, the detector circuit sends a signal to the protection circuit. In response to the signal, the protection circuit lowers or terminates power provided to a host device via one of the contacts of the connector. This helps prevent blows / short circuits that can be caused by unintentional disconnection of the plug.

Monitoring systems

A system can use a video analytic algorithm and/or other input parameters to identify an event (e.g., theft). For example, the security system can use video analytics to determine that a person has reached into a shelf multiple times at a rate above a threshold, which can indicate that a thief is quickly removing items from the shelf. The system can include a VR viewer to provide virtual reality viewing of the area where an event was identified. The system can use Lidar for identifying events and/or for monitoring an area.

Doorbell camera

This application is directed to a doorbell camera for illuminating and capturing scenes. The doorbell camera includes at least a subset of processors for operating a camera module, an image sensor having a field of view of a scene and configured to capture video of a portion of the scene, one or more infrared (IR) illuminators for providing illumination, a waterproof button assembly, and a microphone and a speaker for enabling a real-time conversation between a visitor located at the doorbell camera and a user of a remote client device. The waterproof button assembly is configured to receive a user press on a button top, block water from entering the electronic device, and display a visual pattern uniformly at a peripheral region of the button assembly using LEDs and light guide component that are disposed under the button top.

Methods, systems and apparatus for enabling an accessory for use with a host device

Methods, systems, and apparatus for enabling a power path between a power source and a host device via an accessory. A host device may send, to an accessory arranged within the power path, via a first data pin arranged in the host device, a request for an accessory identifier. The accessory identifier identifies the accessory. The host device may then determine whether the accessory identifier is received from the accessory within a specified period of time or whether a received accessory identifier is valid. If the accessory identifier is not received from the accessory within the specified period of time, or a received accessory identifier is not valid, the host device sends a new request for the accessory identifier to the accessory via a second data pin different than the first data pin.

Power management in hazard detection systems

Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold.

High elastic modulus polymer electrolytes suitable for preventing thermal runaway in lithium batteries

A polymer that combines high ionic conductivity with the structural properties required for Li electrode stability is useful as a solid phase electrolyte for high energy density, high cycle life batteries that do not suffer from failures due to side reactions and dendrite growth on the Li electrodes, and other potential applications. The polymer electrolyte includes a linear block copolymer having a conductive linear polymer block with a molecular weight of at least 5000 Daltons, a structural linear polymer block with an elastic modulus in excess of 1×10 7 Pa and an ionic conductivity of at least 1×10 −5 Scm −1 . The electrolyte is made under dry conditions to achieve the noted characteristics. In another aspect, the electrolyte exhibits a conductivity drop when the temperature of electrolyte increases over a threshold temperature, thereby providing a shutoff mechanism for preventing thermal runaway in lithium battery cells.

Doorbell Camera

This application is directed to a doorbell camera for illuminating and capturing scenes. The doorbell camera includes at least a subset of processors for operating a camera module, an image sensor having a field of view of a scene and configured to capture video of a portion of the scene, one or more infrared (IR) illuminators for providing illumination, a waterproof button assembly, and a microphone and a speaker for enabling a real-time conversation between a visitor located at the doorbell camera and a user of a remote client device. The waterproof button assembly is configured to receive a user press on a button top, block water from entering the electronic device, and display a visual pattern uniformly at a peripheral region of the button assembly using LEDs and light guide component that are disposed under the button top.

Methods, systems and apparatus for enabling an accessory for use with a host device

Methods, systems, and apparatus for enabling a power path between a power source and a host device via an accessory. A host device may send, to an accessory arranged within the power path, via a first data pin arranged in the host device, a request for an accessory identifier. The accessory identifier identifies the accessory. The host device may then determine whether the accessory identifier is received from the accessory within a specified period of time or whether a received accessory identifier is valid. If the accessory identifier is not received from the accessory within the specified period of time, or a received accessory identifier is not valid, the host device sends a new request for the accessory identifier to the accessory via a second data pin different than the first data pin. CA) __ _ __ _

Printed circuit board with compact groups of devices

Electronic devices may contain electrical systems in which electrical components are mounted on a substrate such as a printed circuit board. The electrical components may include surface mount technology components. Multiple surface mount technology components may be stacked on top of each other and beside each other to form an electrical component that minimizes the amount of area that is consumed on a printed circuit board. Noise suppression circuits and other circuits may be implemented using stacked surface mount technology components. Surface mount technology components placed on the printed circuit board may be pushed together and subsequently injection molded to form packed component groups. An integrated circuit may be mounted to the printed circuit board via an interposer and may cover components mounted to the printed circuit board. An integrated circuit may be mounted over a recessed portion of the printed circuit board on which components are mounted.

Monitoring systems

A system can use a video analytic algorithm and/or other input parameters to identify an event (e.g., theft). For example, the security system can use video analytics to determine that a person has reached into a shelf multiple times at a rate above a threshold, which can indicate that a thief is quickly removing items from the shelf. The system can include a VR viewer to provide virtual reality viewing of the area where an event was identified. The system can use Lidar for identifying events and/or for monitoring an area.