Digital video recorder case

Digital video recorder case

The invention provides a digital video recorder case, which comprises a case body and a front panel. A power supply, a mainboard and a hardware array are arranged inside the case body; and a case cooling fan is arranged on a side part of the case. The digital video recorder case is characterized in that the power supply is provided with an independent cooling air duct. Because the power supply is provided with the independent cooling air duct, and a low-noise case fan is adopted, the DVR case has the advantages of high cooling efficiency and low noise.

Control method, device and network keyboard of network monitoring system

The embodiment of the invention provides a control method, a device and a network keyboard of a network monitoring system. The control method comprises the following steps: receiving identification of a selected output channel sent by the network keyboard and selecting a corresponding output channel; monitoring whether the identification of an output window is received after receiving a selected output window trigger instruction sent by pressing down an output window selection function key on the network keyboard; judging whether the selected output channel is provided with an output window corresponding to the identification after the identification of the output window is monitored; if so, taking the output window as the existing active state output window; and displaying video data collected by a video collecting device corresponding to the selected input channel by the existing active state output window. The embodiment of the invention can facilitate the operation of monitoring personnel ...

Abnormal event alarming method, device and system

The invention discloses an abnormal event alarming method, an abnormal event alarming device and an abnormal event alarming system. The method comprises the following steps of: when an abnormal event is detected, acquiring a preset destination mobile station integrated service digital network number (MSISDN); sending the preset destination MSISDN and information-sending-mode indication information to a modem; after a feedback of the modem that the destination MSISDN and information can be sent is received, acquiring alarm information corresponding to the detected abnormal event; and sending the alarm information to the modem, so that the modem sends the alarm information to the destination MSISDN in the information sending mode through a mobile communication network. By using the invention, related personnel can be informed of the alarm information timely and then handles the abnormal event timely.

Automatic aperture adjusting method and device

The invention provides an automatic aperture adjusting device and method based on self-adaptive adjustment. The automatic aperture adjusting device comprises an automatic aperture lens, an average brightness calculation unit, an automatic aperture control unit and an automatic aperture motor, wherein the automatic aperture lens is used for collecting images; the average brightness calculation unit is used for calculating the average brightness of an image acquired by the automatic aperture lens; the automatic aperture control unit is used for generating a control signal which controls the size of the aperture according to the difference of the average brightness calculated by the average brightness calculation unit and target brightness; and the automatic aperture motor is used for controlling the size of the aperture of the automatic aperture lens according to the control signal outputted by the automatic aperture control unit. The size of the aperture can be adaptively controlled byanalyzing ...

Watermark embedding method and device based on H.264 compressed domain

The embodiment of the invention discloses watermark embedding method and device based on an H.264 compressed domain. The method comprises the steps of: obtaining frame block types of macro blocks, wherein different frame block types correspond to different quantities of frame blocks; selecting an intraframe prediction mode for each frame block in the macro blocks from a preset watermark mode set; coding the intraframe prediction mode of each frame block according to the preset coding strategy to obtain coding data; and extracting a watermark carrier from the coding data and embedding watermark information into the watermark carrier. The embodiment of the invention obtains the watermark carrier based on the intraframe prediction modes; and because the intraframe prediction modes are obtained in real time during coding and decoding, the watermark information is embedded into the watermark carrier without causing mismatching of the coding and the decoding, which expands the application range ...

Method and device for displaying characters on screen

The invention discloses a method and a device for displaying characters on a screen. The method comprises the following steps of: acquiring wide-character coding values corresponding to OSD characters to be displayed; acquiring dot matrix information corresponding to the wide-character coding values from a Unicode font library of a host; loading the dot matrix information to a memory of a digital signal processor DSP to make the DSP acquire the dot matrix information corresponding to the OSD characters to be displayed; and loading the dot matrix information corresponding to the OSD characters to be displayed to a video image for display. Through the method and the device, the support for various languages is realized through the Unicode font library, and the Unicode font library theoretically supports all languages known in the world and has good expansibility, so various languages can be supported, the management on the font library is convenient, the system is prevented from being modified ...

Semi-fragile digital watermaking system based on non-redundant Contourlet conversion

Image processing method and device based on optical flow algorithm

The embodiment of the invention discloses image processing method and device based on an optical flow algorithm. The method comprises the following steps of: acquiring a current frame image in a video sequence to be processed, and then acquiring the position of a group of pixel points of the current frame image in the next frame image according to the optical flow algorithm; sampling the group of pixel points according to a global parameter model of two adjacent frame images established in advance, and screening out the pixel point of which the displacement distance is within the preset range; acquiring a global motion parameter from the current frame image to the next frame image with a least square method according to the position coordinates of the screened pixel point in the current frame image and the next frame image; and compensating the next frame image according to the smoothing result on the global motion parameter. In the invention, frame images are processed in a way of combining ...

Power supply switching circuit

The invention provides a power supply switching circuit, which is characterized in that a lower-voltage power supply passes through a first resistor and a second resistor in sequence which are connected in series to be grounded; a high-voltage power supply passes through a fourth resistor and a fifth resistor in sequence which are connected in series to be grounded; the grid electrode of a first NMOS tube is connected with the common terminals of the first resistor and the second resistor, the drain electrode thereof is connected with the common terminals of the fourth resistor and the fifth resistor, and the source electrode thereof is grounded; the grid electrode of a second NMOS tube is connected with the common terminals of the fourth resistor and the fifth resistor, the drain electrode thereof passes through a seventh resistor and a sixth resistor in sequence which are connected in series to be connected with the high-voltage power supply, and the source electrode thereof is grounded ...

Method, system and device for speech alarming of digital hard disk video recorder

The invention discloses a method, a system and a device for speech alarming of a digital hard disk video recorder. The method comprises the following steps: setting speech alarming trigger conditions for the audio file which is acquired and imported by the digital hard disk video recorder DVR; inquiring events in real time; if detecting an event, judging whether the current event satisfies the speech alarming trigger conditions; and if so, playing the audio file used for speech alarming according to the configuration of the current event. By using the invention, audio alarming can be realized, and different speeches can be outputted when triggering the speech alarming by selecting different audio files corresponding to different events. Therefore, the alarming method can be sued for clearly expressing alarming information, expressing various complicated meanings and distinguishing different events, thereby solving the problem that the existing audible alarming can not express various complicated ...

Digital video recorder in video monitoring system and network connection control method thereof

The invention relates to the field of video monitoring, and discloses a digital video recorder in a video monitoring system and a network connection control method thereof. The method comprises the following steps: when the residual bandwidth is not sufficient to support newly added code streams, lowering the code stream characteristics step by step to adapt to the overall bandwidth, recoding all the code streams by using the adjusted code stream characteristics and transmitting the code streams, so that the digital video recorder can support more clients by using limited bandwidth while viewing the monitoring video; and when the number of connected clients decreases, under the limit of rated overall bandwidth, trying to rising the code stream characteristics, thereby realizing code stream adjustment in a self-adapting mode.

Image processing method and device based on optical flow algorithm

The embodiment of the invention discloses image processing method and device based on an optical flow algorithm. The method comprises the following steps of: acquiring a current frame image in a video sequence to be processed, and then acquiring the position of a group of pixel points of the current frame image in the next frame image according to the optical flow algorithm; sampling the group ofpixel points according to a global parameter model of two adjacent frame images established in advance, and screening out the pixel point of which the displacement distance is within the preset range; acquiring a global motion parameter from the current frame image to the next frame image with a least square method according to the position coordinates of the screened pixel point in the current frame image and the next frame image; and compensating the next frame image according to the smoothing result on the global motion parameter. In the invention, frame images are processed in a way of combining ...

Method, system and decoder for switching monitoring channel

The invention discloses a method, a system and a decoder for switching a monitoring channel. The method adopts at least one decoder, and each decoder is directly connected with a keyboard to receive information from the keyboard. The method comprises the following steps of: storing imported DVR channel information and imported decoder channel information into each decoder respectively; receiving switching control instructions from the keyboard, and searching the DVR channel information and the decoder channel information according to a DVR channel digital number and a decoder channel digital number respectively to acquire DVR channel identifier information and practical output channel number of the decoder; and setting parameters corresponding to the searched DVR channel identifier information into the corresponding parameters of a practical output channel of the decoder, and updating the configuration parameters of the decoder so as to realize switch of the monitoring channel. The method ...

Method and device for selecting coding mode in layered video coding

The invention relates to method and device for selecting a coding mode in layered video coding. The method comprises the following steps of: acquiring in-layer prediction mode motion information selected by an enhancement layer coding block; acquiring interlayer prediction mode motion information selected by the enhancement layer coding block on the basis of the in-layer prediction mode motion information; selecting a coding mode by judging whether the motion information of an in-layer mode is consistent with the prediction motion information of an interlayer mode or not; and coding by adopting the interlayer motion information prediction mode if the motion information of the in-layer mode is consistent with the prediction motion information of the interlayer mode or else coding by adopting the in-layer mode. The invention can be utilized to reduce the amount of calculation.

Video coding method and device for removing flicker of I frame

The invention relates to image processing, and discloses a video coding method and a video coding device for removing the flicker of a I frame. In the method and the device, if a current frame is the I frame, time-space domain filtering is performed on a current image by utilizing an adjacent reconstructed image before the I frame and parameters produced in a reconstructed image coding process, and the time-space domain filtered I frame is coded. In the time-space domain filtering of the I frame, a time-space filtering coefficient alpha is obtained by taking the adjacent reconstructed image before the I frame and the parameters produced in the reconstructed image coding process as references, so information at the last image coding moment can be taken into account in the time-space domainfiltering of the I frame to reduce a difference between an original image of the I frame and the reconstructed image before the I frame, solve the problem of flicker of the I frame and better the filtering ...

Synchronous decoding method and device

Emergency nursing device for public health emergencies

The invention discloses an emergency nursing device for public health emergencies, and belongs to the technical field of medical first-aid equipments.The first bed board is rotationally connected with the second bed board, the second bed board is rotationally connected with the third bed board, and round pipes are installed on the two sides of the first bed board, the two sides of the second bed board and the two sides of the third bed board; the sliding round tubes are slidably sleeved with the round tubes on the two sides of the third bed board, the sliding round tubes are slidably sleeved with the round tubes on the two sides of the first bed board, the second bed board and the third bed board at the same time during use, the infusion mechanism is installed at the bottom of the first bed board, and the oxygen supply mechanism is installed at the bottom of the third bed board. The device has the advantages of being convenient to store and unfold, small in size, free of manual pressing ...

User right management method and device for digital video recorder

The invention discloses a user permission management method for a digital video recorder, which comprises the following steps of: determining users requiring permission configuration, and extracting user information corresponding to the users; according to the user information, determining user levels of the users; when the users are administrator users, configuring a main menu lock for the usersto lock the main menu login function; and when the users are common users, configuring an initial user menu lock for the users to lock the menu operating function beyond the user permission of the users. The method can simply, conveniently and accurately manage the user permission of the digital video recorder.

Small picture playback method and device of digital video recorder

The invention discloses a small picture playback method of a digital video recorder, which comprises: setting a menu window as in a transparent mode; setting the size of a playback window, positioning the playback window at the position of the menu window, and filling the playback window with a transparent color; receiving a playing channel and playing date information which are selected by a user and extracting a 24-hour played file corresponding to the playing date information from a database through the playing channel; and playing the 24-hour played file in the playback window. The embodiment of the invention can solve a playback shielding problem and improve the real-time and convenience of the use of a user.

Control method and related device of network monitoring system

The embodiment of the invention provides a control method, a control device and a network keyboard of a network monitoring system and a packet switching setting method. The control method of the network monitoring system comprises the following steps: after a triggering instruction of an input channel packet sent by pressing an input channel packet selection function key on the network keyboard is received, monitoring whether input channel packet identification is received, wherein, the input channel packet comprises at least two input channels; after the input channel packet identification is monitored, judging whether the input channel packet corresponding to the identification exists; if yes, using the input channel packet as the input channel packet in the current activated state; andoutputting and displaying the video data of the input channels in the input channel packet in the current activated state through display equipment corresponding to the selected output channel.

Vehicle speed measurement method, supervisory computer and vehicle speed measurement system

The invention discloses a vehicle speed measurement method, a supervisory computer and a vehicle speed measurement system. The method comprises the following steps of: receiving multiframe images collected by a close-up camera aiming at a vehicle to be tested according to a preset frequency by the supervisory computer; calculating the running track of a licence plate, and selecting the multiframeimage with correct track as an image group to be analyzed; and tracking and calculating the imaging distance of the licence plate in the image group to be analyzed, calculating the actual distance corresponding to the imaging distance according to the correspondence between a real world coordinate system and an imaging coordinate system, dividing the actual distance by the time difference of the corresponding image obtained by calculating according to the preset frequency to obtain the current tracking vehicle speed, and averaging to obtain the vehicle speed of the vehicle to be tested. The supervisory ...

Video monitoring method, system and device based on virtual wall

The embodiment of the invention discloses video monitoring method, system and device based on a virtual wall. A section with any shape is used as the virtual wall in a monitoring video according to a pre-acquired video image, and target characteristics used for triggering the warning are set. The method comprises the steps of: acquiring a video image in the monitoring video; analyzing the content of the video image, obtaining characteristic information and motion track information of a moving target in the video image; and when the characteristic information of the moving target accords with the target characteristics, judging that the moving target passes through the virtual wall according to the motion track information of the moving target. The video monitoring is carried out by applying the embodiment of the invention, because the monitoring range of the set virtual wall is far more than that of the line section in a video trip, the accuracy of the video monitoring is improved, and ...

Face detection method and device adopting cascade classifier

The invention discloses a face detection method and device adopting a cascade classifier, relating to the field of video monitoring. The face detection method comprises the following step of: carrying out face detection on rectangular windows with different positions and sizes in a current image to be detected by adopting a light type cascade-structure classifier to detect face windows, wherein each level of the light type cascade-structure classifier is a weak classifier. For a large quantity of windows to be detected in one image, relative to a scheme that a cascade-structure classifier is bound to eliminate partial non-faces after computing the results of all weak classifiers of a strong classifier, each weak classifier of the light type cascade-structure classifier can eliminate the partial non-faces, and therefore faster detection speed can be achieved, and the real-time detection of faces is further realized on megapixel high-definition videos.

Video detection method and system

The invention relates to a traffic management system, and discloses a video detection method and system. The video detection method comprises the following steps: performing object feature detection on a virtual loop set in a video image, wherein, the object feature comprises the darkest shadow feature in the front of a vehicle; and when the object feature is detected, triggering a capture signal for capturing. In the invention, stable vehicle information features such as the darkest shadow in the front of the vehicle and the like are taken as an object feature which needs to be detected, thus the capture rate for video detection is effective improved, the missing report rate is lowered, and a more accurate and more robust video detection function is achieved.

Semi-fragile digital watermaking system based on non-redundant Contourlet conversion

The invention provides a semi-fragile digital watermaking system based on non-redundant Contourlet conversion, which can complete watermak embedding by regulating the magnitude relationship of parent-child coefficients. By utilizing the semi-fragile characteristic of the parent-child coefficients, the invention can get robustness to JPEG compression, JPEG 2000 compression, Gaussian noise adding, Gaussian filtering and contrast stretching operation, but has vulnerability to replication and pasting baleful operation with change of work content information. An experimental result shows that the semi-fragile digital watermaking system of blind detection proposed by people can ensure that certification and location of tampering a region are accurately realized under the conditions of the false alarm rate being lower than 6.5 percent and MDR being lower than 1 percent. By utilizing the parent and child relationship of WBCT region, the system enhances the detection accuracy rate of tampering the ...

Multi-CPU (Central Processing Unit)system starting method and module based on PCI/PCIe (Peripheral Component Interconnect/Peripheral Component Interconnect Express) bus

The invention discloses multi-CPU (Central Processing Unit)system starting method and module based on a PCI/PCIe (Peripheral Component Interconnect/Peripheral Component Interconnect Express) bus, which relate to the field of automatic control. The method comprises the following steps of: preestablishing a data structure and selecting a group leader CPU of each bus, loading a data structure into aself memory and mapping the self memory into a PCI space by a main CPU; loading the data structure to the group leader CPU of each bus by the main CPU; starting initialization by the group leader CPUof each bus according to the initialing information of the CPU in the data structure after receiving the data structure and informing the main CPU to update the state information of the CPU after theinitialization is successful; loading the data structure to other subordinate CPUs on the bus by the group leader CPU finishing the initialization under the control of the main CPU on each bus; and finishing ...

Protection circuit

The invention discloses a protection circuit. The technical scheme of the invention is as follows: a SDI (Serial Digital Interface) receiving terminal connects an external circuit transmission line through a TBU (Transient Blocking Unit) protection unit; the SDI receiving terminal connects the external circuit transmission line through a bidirectional TVS (Transient Voltage Suppressor) tube and a gas protection tube; the bidirectional TVS tube and the gas protection tube connect a protection land; the SDI (Serial Digital Interface) sending terminal connects the external circuit transmission line through the TBU (Transient Blocking Unit) protection unit; the SDI sending terminal connects the external circuit transmission line through the bidirectional TVS (Transient Voltage Suppressor) tube and the gas protection tube; and the bidirectional TVS tube and the gas protection tube connect the protection land. According to the protection circuit, protections such as the lightning protection, ...

Mutually exclusive resource remote-access method and digital video recorder

The invention relates to digital monitoring, and discloses a mutually exclusive resource remote-access method and a digital video recorder. The method comprises the following steps of: when a certain remote user makes a request of accessing mutually exclusive resources which are accessed by another remote user, acquiring the priority of the first remote user makes the request of accessing the mutually exclusive resources, and comparing the priority of the first remote user with the priority of the second remote user accessing the mutually exclusive resources; and if the priority of the first remote user is higher than that of the second remote user, allowing the first remote user to access the mutually exclusive resources, and stopping the current mutually exclusive resource access of the second remote user. The remote user with higher priorities can be ensured to preferentially access the mutually exclusive resources, thereby endowing the remote access of the mutually exclusive resources ...

Detection method and device for image sensor

The invention provides a detection method and a detection device for an image sensor. The method comprises the following steps of: acquiring an exposed image which is acquired by the image sensor and matched with a current exposure configuration parameter, wherein the current exposure configuration parameter is any one of at least two preset groups of exposure configuration parameters; detecting dead pixels on the exposed image to obtain an initial dead pixel set; triggering the image sensor to continue to acquire exposed images matched with the current exposure configuration parameter; verifying the position of each dead pixel in a corresponding initial dead pixel set in the exposed images acquired each time, and recording a verification result; analyzing the verification result of each frame of exposed image when the frames of the exposed image reach the preset frame number so as to obtain final dead pixel information matched with the current exposure configuration parameter; and combining ...

Method and device for realizing monitoring by fast ball tracking system

The invention discloses a method and a device for realizing monitoring by a fast ball tracking system. The method comprises the following steps: obtaining the PT value of each frame of a monitored target at the preset frame rate after the initialization operation is completed and the monitored target is detected; differencing the latest PT value and the former PT value; and controlling the operation of a ball machine according to differencing results. By applying the invention and adopting 3D based positioning principle, the better tracking on the conditions of tiny movement or even still standing of moving targets can be obtained through the control algorithm of the target speed, and the defect of discontinuous tracking can be effectively overcome. Through magnification closed-loop control, rich information of the target can be obtained, and tracking locking can be perfectly realized. The cruising tracking function provided by the embodiment of the invention can realize the alternate cruising ...

Method and system for realizing video matrix function

The invention discloses a method and a system for realizing a video matrix function. One decoder in a video matrix is a master decoder, while the other decoders are slave decoder, wherein the master decoder is used for maintaining decoding channel information of the master decoder and each slave decoder and each piece of encoding channel information at the front end. The method comprises the following steps of: detecting and receiving serial port data by using the master decoder; analyzing the serial port data and determining a control type; according to the serial port data, the decoding channel information of the master decoder and each slave decoder and each piece of encoding channel information at the front end, determining a control command and a control object; and transmitting the control command to the control object to realize the video matrix function corresponding to the control type. Through the method and the system, the centralized management and configuration of the decoders ...

Method and device for monitoring and supplementing light

The invention discloses a method and a device for monitoring and supplementing light. A light supplementing source of monitoring equipment comprises at least two groups of sub-light sources with different illuminating angles. The method comprises the following steps of: acquiring a distance between the monitoring equipment and a target object and the multiplying power of the monitoring equipment; and starting the sub-light source matched with the distance and the multiplying power to supplement light according to preset conditions. By selecting the sub-light sources from the light supplementing source in reference to the multiplying power of the monitoring equipment and the distance between the monitoring equipment and the target object comprehensively, after the light supplementing source is matched with the monitoring equipment, the light supplemented to pictures monitored by the monitoring equipment is moderate, and the images are clear all the time.

一种复合行星执行机构

The present invention relates to a valve speed-regulating technique, in the concrete, it is a composite planetary actuating mechanism. It includes motor, central gear, planetary gear group, coupler, bearing and inner toothed ring. It also includes feed-through shaft, cam, control switch and relay, etc. It also provides their connection relationship and assembly structure.

Method and device for modifying IP address of equipment

The invention discloses a method and a device for modifying the IP address of equipment. The method comprises the following steps that: first equipment broadcasts an activation request to all equipment in a local area network and receives an activation response, wherein the activation response comprises equipment basic information of the equipment initiating the activation response; and when determining that the equipment initiating the activation response is nonactivated equipment according to the equipment basic information, the first equipment adds the nonactivated equipment as activated equipment, and initiates an IP address updating request to the activated equipment, wherein the IP address updating request comprises the IP address and port number specified by the activated equipment. Through the method and the device, the IP address of the equipment can be efficiently modified and can also be remotely controlled.

Image enhancement method and device

The embodiment of the invention discloses an image enhancement method and an image enhancement device. The method comprises the following steps of: performing gray level stretching on a target image and performing gray level mapping on the stretched image to obtain an overall gray level mapping value of the target image; segmenting the target image into image units, wherein a square area consisting of every nine image units is a local block, and a square area consisting of every four image units in the local block is an image block; performing gray level stretching on four image blocks in each local block and performing gray level mapping on the stretched image blocks respectively to obtain gray level mapping values of the image blocks; weighting and summing the gray level mapping values of the image blocks to obtain a local gray level mapping value of the target image; and performing arithmetic average on the overall gray level mapping value and the local gray level mapping value to obtain ...

Context-based self-adaption variable length decoding method and device of H.264

The invention discloses a context-based self-adaption variable length decoding method and a device of H.264. The context-based self-adaption variable length decoding method of H.264 comprises the following steps: constructing a rapid analysis lookup table in advance according to an H.264 standard code table; obtaining the lookup index of a codon to be analyzed in the rapid analysis lookup table according to the number of leading zeros of the codon to be analyzed; and according to the lookup index, finding the syntactic element value of the codon to be analyzed in the rapid analysis lookup table, wherein the syntactic element value is used for carrying out inverse quantization, inverse transformation and predictive addition processing to obtain a decoding video output image. The efficiency of context-based self-adaption variable length decoding can be effectively improved, and simultaneously, the occupation of memory sources in the decoding process can be reduced by applying the scheme.

Vehicle speed measurement method, supervisory computer and vehicle speed measurement system

The invention discloses a vehicle speed measurement method, a supervisory computer and a vehicle speed measurement system. The method comprises the following steps of: receiving multiframe images collected by a close-up camera aiming at a vehicle to be tested according to a preset frequency by the supervisory computer; calculating the running track of a licence plate, and selecting the multiframe image with correct track as an image group to be analyzed; and tracking and calculating the imaging distance of the licence plate in the image group to be analyzed, calculating the actual distance corresponding to the imaging distance according to the correspondence between a real world coordinate system and an imaging coordinate system, dividing the actual distance by the time difference of the corresponding image obtained by calculating according to the preset frequency to obtain the current tracking vehicle speed, and averaging to obtain the vehicle speed of the vehicle to be tested. The supervisory ...

DVR (Digital Video Recorder) as well as data backup and recovery method and system thereof

The invention discloses a DVR (Digital Video Recorder) as well as data backup and recovery method and system thereof, which are applied to a monitoring system comprising a backup DVR and a plurality of video DVRs, wherein the backup DVR is connected with the video DVRs. The method comprises the following steps of: when the backup DVR detects abnormal video DVRs, switching the videos of the abnormal video DVRs to the backup DVR; carrying out data backup on the abnormal video DVRs through a video source by the backup DVR; when the detected abnormal video DVRs return to normal, stopping the data backup and transmitting the backed up data to the abnormal video DVRs; and carrying out data recovery by the abnormal video DVRs according to the backed up data to obtain a complete data source. By applying the invention, the recovery of complete data can be automatically carried out according to the backup data transmitted by the backup DVR, thereby the operation complexity is reduced.

Ampoule cutting device

The invention discloses an ampoule cutting device. The ampoule cutting device comprises a housing, and a blade for cutting scales in an ampoule neck; the aperture in the housing is matched with the diameter of an ampoule cap; the housing is barrel-shaped; one end of an elastic cutting plate is fixed to the outer surface of the housing, and while the other end of the elastic cutting plate is equipped with a column body which is vertical to the elastic cutting plate; the column body is opposite to a long hole in the hole wall of the housing; the end head of the column body is a conical tip body which is manufactured through diamond, hard gold or artificial diamond. The ampoule cutting device has obvious advantages that the efficiency is high, and fingers cannot be cut.

Sub-threshold storage circuit interface circuit with high density and robustness

The invention discloses a sub-threshold storage circuit interface circuit with high density and robustness. The circuit is used for connecting an above-threshold area with a sub-threshold area; a Schmitt inverter consists of transistors: the gate ends of a PMOS (p-channel metal oxide semiconductor) transistor P1 and two NMOS (n-channel metal oxide semiconductor) transistors N1 and N2 are connected with an input end Vin; a source end of the PMOS transistor P1 is connected with a power voltage Vdd; the drain end of the PMOS transistor P1 is connected with the drain end of the NMOS transistor N1 and the gate end of an NMOS transistor N3, and connected to an output end Vout; the body end of the PMOS transistor P1 is connected with the power voltage Vdd; the body ends of the NMOS transistors N1, N2 and N3 are connected with a ground end GND respectively; the source end of the NMOS transistor N1, the drain end of the NMOS transistor N2 and the source end of the NMOS transistor N3 are connected ...

Method and system for searching logs

The invention discloses a method and a system for searching logs. The method comprises the following steps: after receiving the searching information, judging whether a log corresponding to the mark at the current time period contains a log conforming to the starting time and the finishing time in the searching information or not by utilizing the starting time and the finishing time in an index at the current time period, if so, bisearching the log corresponding to the mark at the current time period to determine the log conforming to the starting time and the finishing time at the current time period; adding the log conforming to the searching information to the searching result; taking the adjacent next time period index as the current index, and repeatedly executing the judging step, if not, taking the adjacent next time period index as the current index, and repeatedly executing the judging step; and when the searching end condition is conformed, stopping the search, and returningthe ...

Control method, device and network keyboard of network monitoring system

The embodiment of the invention provides a control method, a device and a network keyboard of a network monitoring system. The control method comprises the following steps: receiving identification of a selected output channel sent by the network keyboard and selecting a corresponding output channel; monitoring whether the identification of an output window is received after receiving a selected output window trigger instruction sent by pressing down an output window selection function key on the network keyboard; judging whether the selected output channel is provided with an output window corresponding to the identification after the identification of the output window is monitored; if so, taking the output window as the existing active state output window; and displaying video data collected by a video collecting device corresponding to the selected input channel by the existing active state output window. The embodiment of the invention can facilitate the operation of monitoring personnel ...

Motion detection method and device

The invention discloses a motion detection method and a motion detection device. The method comprises the following steps of: when a current block is subjected to coding operation, calculating auxiliary parameters by utilizing coding parameters and the preset Sensitivity, wherein the coding parameters at least comprise the motion vector MV of the current block, and the auxiliary parameters at least comprise the sum of the absolute value of the MV and a first threshold; determining the motion state of the current block through judgment models corresponding to the coding parameters and the auxiliary parameters, wherein the block comprises one or more than two macro blocks. For a coding end, the coding parameters generated in the block coding process are simply processed to calculate the auxiliary parameters, and the motion state of the block is judged through the judgment models corresponding to the coding parameters and the auxiliary parameters. Images are not required to be stored, so the ...

DVR (Digital Video Recorder) as well as data backup and recovery method and system thereof

The embodiment of the invention discloses a DVR (Digital Video Recorder) as well as data backup and recovery method and system thereof, which are applied to a monitoring system comprising a backup DVR and a plurality of video DVRs, wherein the backup DVR is connected with the video DVRs. The method comprises the following steps of: when the backup DVR detects abnormal video DVRs, switching the videos of the abnormal video DVRs to the backup DVR; carrying out data backup on the abnormal video DVRs through a video source by the backup DVR; when the detected abnormal video DVRs return to normal, stopping the data backup and transmitting the backed up data to the abnormal video DVRs; and carrying out data recovery by the abnormal video DVRs according to the backed up data to obtain a complete data source. By applying the invention, the recovery of complete data can be automatically carried out according to the backup data transmitted by the backup DVR, thereby the operation complexity is reduced ...

Right management method and equipment for video monitoring equipment

The invention discloses a right management method and right management equipment for video monitoring equipment. The video monitoring equipment is provided with at least one equipment user, and each equipment user corresponds to a unique identifier. The method comprises the following steps of: acquiring a user right mapping table from a server by using the video monitoring equipment; and performing right management on each equipment user according to the user right mapping table. Through the method, the management over the equipment user can be realized by the user right mapping table. Therefore, monitoring is taken as a service, and through online right management, the equipment user can realize the functions of acquiring monitoring services in service period, terminating and renewing due monitoring serves, and the like. The video monitoring equipment performs dynamic management on the rights of the equipment user by the feedback of the server, and if the system time of the video monitoring ...

Method and device for regulating exposure

The embodiment of the invention discloses a method for regulating exposure, which is characterized by dividing the lightness interval of a system into at least three subintervals in advance, respectively setting a fitting function for each subinterval, and presetting an object lightness value, an upper limit value and a lower limit value thereof. The method comprises the following steps: obtaining parameter values at the current time, wherein the parameter values comprise a lightness statistic value of an input image at the current time; when the lightness statistic value is not within the interval composed of the upper limit value and the lower limit value of the object lightness value, judging the subinterval to which the lightness statistic value belongs; and regulating the exposure through the fitting function corresponding to the subinterval to which the lightness statistic value belongs. The embodiment of the invention further discloses an exposure regulating device. The embodiment ...

Information uploading method, retrieval method, DVR and monitoring equipment

The invention discloses an information uploading method, a retrieval method, a DVR and monitoring equipment. The information uploading method comprises the following steps that: the DVR receives an image grabbing command; the DVR grabs images with the preset quantity according to the image grabbing command, wherein the images include picture data and picture information which are correlated through image attributes; the grabbed images are stored in a memory, and are uploaded to the monitoring equipment; and the monitoring equipment stores the picture data through a picture data server, and the picture information is stored through a picture information server. The DVR of the invention can trigger and grab a plurality of images in each time according to the preset quantity, and the definition probability of the grabbed images can be improved; and because the grabbed images are transmitted to the monitoring equipment by the DVR and are also stored in the local memory at the same time, when ...

Realizing method of loop filtering parallel

Display method and equipment of overlaid transaction data

The invention discloses a display method and equipment of overlaid transaction data; the method comprises the following steps that: detecting the log files of an ATM, and when detects a new log file is produced, sending the newly produced log file to a digital video recorder system; after detecting received data, the digital video recorder system analyzes transaction data from the data; and overlaying the transaction data to a video image to be display. The invention not only does not need any extra hardware but also does not access the password and other information of a card holder, thereby not only saving cost but also ensuring data security; in addition, the method not only can overlay card numbers, but also can overlay other transaction data other than the card numbers.

Video playback method, monitoring client and digital hard disk video recorder

The invention discloses a video playback method, a monitoring client and a digital hard disk video recorder, wherein the method comprises the following steps: configuring an ID of a DVR and the mapping relationship of an IP address and a catalog of an NAS server; searching the IP address and the catalog of the NAS server corresponding to the ID of the target DVR according to the mapping relationship; connecting to the corresponding NAS server through the IP address; and playing video files selected in the catalog of the NAS server. The monitoring client can find the NAS server and the catalog corresponding to the DVR according to the configured ID of the DVR and the mapping relationship of the IP address and the catalog of the NAS server, the NAS server can be directly visited for carrying out video file playback, and the normal playback of the video files when the monitoring client can not be connected with the DVR is ensured.

Image pickup system and image pickup method

The invention relates to an image pickup system and an image pickup method. The image pickup system comprises a phase detection unit, a first clock signal generation unit, a synchronizing signal generation unit, a video frame drive signal generation unit and an image acquisition and generation unit, wherein the phase detection unit is used for detecting the phase difference between the phase of a synchronizing signal of an actual drive signal of a light emitting device near the image pickup system and the phase of a synchronizing signal of an ideal drive signal and also used for generating a phase difference signal for indicating the phase difference; the first clock signal generation unit is used for generating a first clock signal corresponding to a phase difference signal; the synchronizing signal generation unit is used for generating a synchronizing signal of the ideal drive signal of the light emitting device under the control of the first clock signal; the video frame drive signal ...

Data storage system in video monitoring and method for storing, previewing and reviewing data

The invention provides a data storage system in video monitoring and a method for storing, previewing and reviewing data. The data storage system comprises a management platform and at least one DVR, wherein, each DVR is connected with an embedded PCI-E card; the embedded PCI-E card is connected with the management platform through a storage network and used for receiving and storing video data according to an instruction of a main control CPU of each DVR connected with the card; the management platform is connected with the embedded PCI-E card on each DVR and acquires the video data connected to the embedded PCI-E card; and the management platform manages the video stored on the embedded PCI-E card by an iSCSI mode. The invention lowers I/O expenditure of the main control CPU, improves system performances and realizes centralized management of scattered video data in each DVR through the management platform by adopting an iSCSI technology.

Interrupt processing method of multi-PCIE (Peripheral Component Interface Express) equipment system

The invention discloses an interrupt processing method of a multi-PCIE (Peripheral Component Interface Express) equipment system, relating to the field of automatic control. In the invention, an interrupt register and an interrupt state register are arranged in advance, and the value of the interrupt state register changes along with the variation of a value of the interrupt register based on a preset rule; a notification message is sent when PCIE equipment generates interrupt, and an interrupt vector number and an interrupt register address which are configurated to the PCIE equipment in advance are carried in the message; after receiving the notification message, a main control end writes the interrupt vector number into the interrupt register corresponding to a mapping address; and an interrupt processing program which is registered in advance is called and executed based on the value of the interrupt state register, and the value of the interrupt state register is revised to restore ...

Method for acquiring bad point detection image of image sensor and device thereof

The invention relates to the field of electronic circuits and discloses a method for acquiring a bad point detection image of an image sensor and a device thereof. In the method and the device, the exposure degree of an image is controlled by utilizing exposure configuration parameters; because bright bad points, dark bad points or inconsistent points have different light ray sensitivity degrees from that of a peripheral light sensitive source, the differences between the points and the points around become more remarkable when the bright and dark degrees of the image is controlled by adopting an exposure method; therefore, the inconsistent points are easier to be detected. In other words, the image sensor bad points, with different damage degrees and different colors, of an acquired image of are effectively highlighted; the stability and the reliability of bad point detection are improved; and the detection leakage of the bad points is reduced. Moreover, the method can be implemented almost ...

Watermark embedding method, and watermark detection method and device

The embodiment of the invention discloses a watermark embedding method, and a watermark detection method and a device. The watermark embedding method comprises the following steps: carrying out three-stage nonredundancy contourlet transformation on an original image to obtain low-frequency sub-band information and three-stage high-frequency sub-band information of the original image; using coefficients in a third-stage high-frequency sub-band in the three-stage high-frequency sub-bands as parent coefficients, and using the coefficients in a second-stage high-frequency sub-band as son coefficients to constitute a tree structure; selecting the tree structure for embedding the watermark from the tree structure according to the preset key; calculating absolute values of the parent coefficients in the selected tree structure and an average value of the absolute values of all the son coefficients; and adjusting the absolute values of the parent coefficients and the average value of the absolute ...

Protection method of data security and device

The invention discloses a protection method of data security and a device. The method comprises: an array adapter is arranged in a digital video recorder, the array adapter is connected with the digital video recorder through an expansion bus, and the digital video recorder is provided with a plurality of hard disks. The method further also comprises: the array adapter receives the data from the digital video recorder through the expansion bus when the digital video recorder needs to save the data, and calculates the save location of the data in the hard disks; and the data is saved in the calculated save location in a disk array mode. According to the invention, the data can be saved in the disk array mode, thereby avoiding the data loss of all the hard disks due to the fault of one hard disk, and effectively protecting the data in the hard disks.

Vehicle monitoring method and system thereof

The invention relates to a traffic management system and discloses a vehicle monitoring method and a system thereof. In the invention, a plurality of index file units form an index file, related identified information of a licence plate is recorded in an index file unit after the licence plate is identified every time, and every vehicle which passes through corresponds to one index file unit. The index file is utilized to search vehicles which accord with conditions. The related information of the licence plate of each vehicle which passes through is recorded, and each vehicle which passes through corresponds to one index file unit, thus whether one licence plate passes through the scene within a certain time period can be rapidly determined, fast vehicle positioning after an accident happens is realized, and convenience is provided for trace of the accident in the future.

Exposure control method and device

The embodiment of the invention discloses an exposure control method and device which are used in a candid camera with a video recording mode and a candid mode. The method comprises the following steps: after receiving a candid trigger signal, the candid camera converts the video recording mode to the candid mode; the candid exposure parameter in the candid mode is calculated according to a video exposure parameter in the video recording mode; and one frame of candid image is shot according to the candid exposure parameter. The candid camera in the embodiment of the invention has double functions of video recording and candid so that the candid exposure parameter of any moment can be calculated according to the video exposure parameter; as the video exposure parameter is characterized by changing according to the physical environment, the calculated candid exposure parameter can change to adapt to the environment and the exposure quality of the candid image can be increased; and when the ...

Method for expanding multichannel decoding and multichannel intelligent video processing functions and device thereof

The invention discloses a method capable of simultaneously expanding multichannel decoding and multichannel intelligent video processing functions and a device thereof. Under the condition that hardware resource design of the original digital video recorder is not changed or less changed, a sub board provide with a plurality of DSP chips can be expanded by virtue of a PCI interface, so as to carry out multichannel decoding and multichannel intelligent video analysis.Maximum utilization factor of DSP on the expansion board is achieved by adopting the way that decoding function and intelligent analysis function of the expansion board are mutually switched, so that all the DSPs of the expansion board are used for one function in different operation states, thus increasing the number of channels supported by decoding and intelligent analysis. Hardware design implementation of the embodiment of the invention is simple, and an expanded common digital video recorder can simultaneously furthest ...

Processing method and device of image contrast

The embodiment of the invention discloses a processing method and a device of image contrast, which is used for processing image contrast in digital camera equipment. The method comprises the following steps: acquiring a frame image to be processed; carrying out histogram statistics for each channel corresponding to the color space of the frame image so as to acquire histogram statistical information; adjusting the pixel gray level distribution of the image according to the histogram statistical information, and outputting the mapping relation between the unadjusted pixel gray level and the adjusted pixel gray level; and remapping the pixel gray value of the image according to the mapping relation to acquire the image with processed contrast. The embodiment of the invention realizes the enhancement of the image contrast before the image is compressed or transferred, thereby avoiding the problem that the noise or the interference of the image is further expanded caused by carrying out contrast ...

Parallel transmitting and computing method and system of two-dimensional image data

The invention relates to a parallel transmitting and computing method and a system of two-dimensional image data. The method comprises the following steps: setting the width of an image to be processed as img_w, the width of a computing window as wnd_w and the height as wnd_h, wherein m*n computed results can be obtained each time at the computing window, and allocating an on-chip buffer region with the width of col_w and the total capacity of col_w*(wnd_h+n-1)+img_w for image processing, wherein col_w=wnd_w+m*2-1; at a T unit moment, transmitting the two-dimensional region reference data of the image to be processed required by computation for the first time to an on-chip buffer; and at a T+1 unit moment, obtaining a corresponding computed result of the time according to the reference data in the current on-chip buffer, and meanwhile, transmitting the reference data required by the computation for the next time to the on-chip buffer. The scheme realizes the parallel transmission and computation ...

Method and device for realizing DVR data decoding playback

The invention discloses a method and a device for realizing Digital Video Recorder (DVR) data decoding playback. The method comprises the following steps of: configuring a coding channel for generating a decoding playback signal source, and allocating a corresponding memory space for the decoding channel; respectively receiving each original data information output by each coding processing chip,and forming the decoding playback signal source in the memory space according to each original data information; feeding the decoding playback signal source into the coding channel for compression coding; and performing the decoding playback on data information generated after the compression coding in the coding channel through a decoding channel in a decoding processing chip. On the premise of not adding hardware cost and not influencing a decoding display frame rate, the decoding playback of multi-loop coding data is effectively realized.

Multi-picture display method based on audio/video monitoring system, decoder and system

The invention discloses a multi-picture display method based on an audio/video monitoring system, a decoder and a system. The method comprises the following steps: acquiring the decoding resources of a plurality of decoding channels; converging the decoding resources onto a display channel; and carrying out multi-picture display on the decoding resources on the display channel on a TV wall. The invention provides a scheme that the network audio/video decoder supports multi-picture display, effectively reduces the scales and cost of the TV walls in the monitoring center and well satisfies the demand of multi-picture display of the TV wall servers.

Decoding method, decoder and system based on audio/video monitoring system

The invention discloses a decoding method, a decoder and a system based on an audio/video monitoring system, which are used for carrying out polling decoding on the data stream of a plurality of monitoring channels by adopting a decoding channel. The method comprises the following steps: determining the current monitoring channel corresponding to the decoding channel and decoding the current monitoring channel; and after completing decoding of the current monitoring channel, decoding the next monitoring channel according to the preset decoding sequence of the monitoring channels. The invention can effectively utilize a few of decoders to realize decoding monitoring of a plurality of monitoring points, improve the cost performance of the network audio/video decoders and simultaneously lower the cost of decoding on the wall in the monitoring system.

Low-bandwidth video data transmission method and hard disk video recorder

The invention discloses a low-bandwidth video data transmission method and a hard disk video recorder. The method comprises the following steps of: sending an RTP (real-time transport protocol) packet to a monitoring client through UDP and caching the RPT packet and an identifier of the RTP packet, wherein video data is encapsulated in the RTP packet; and if an RTCP (real-time transport control protocol) packet which is returned by the monitoring client and carries the identifier of the RTP packet is not received within the pre-set time after the RTP packet is sent, retransmitting the cached RTP packet again. On the basis of transmitting the video data by using the UDP, whether the monitoring client successfully receives the RTP packet is confirmed according to whether an application layer can receive the RTCP packet carrying the identifier of the RTP packet; and if confirmation information is not received within the pre-set time, the RTP packet is retransmitted, so that the transmission ...

Method and system for playing back videos in video monitoring system and network monitoring client side

The invention discloses a method and a system for playing back videos in a video monitoring system and a network monitoring client side, wherein, the method comprises the following steps: the network monitoring client side sends a video file request to monitoring equipment, acquires video index information from the received searching result, acquires an address and a path of a storage server according to the video index information, and directly acquires audio/video flow corresponding to the video index information according to the address and the path of the storage server and plays the audio/video flow. By using the embodiment of the invention, the network monitoring client side can directly download and play the audio/video flow corresponding to the files from the storage server, avoids the bottleneck of network port bandwidth caused by that all the audio/video flows completely pass through the monitoring equipment, promotes playing speed and also improves satisfactory of users simultaneously ...

Waste leftover material wire drawing machine and wire drawing method

The invention relates to the field of metal product processing, in particular to a waste leftover material wire drawing machine and a wire drawing method, which is designed aiming at the technical problems of lower wire drawing efficiency, time and labor consumption by manpower and higher processing cost of the traditional similar equipment. The invention has the essentials that a roller seat, a gear case, a motor and a roller form a wire drawing assembly; die cases are arranged on the roller seat; and the die cases are internally provided with friction powder. Wires sequentially pass throughthe die cases among the wire drawing assemblies, and the linear speeds of the wires sequentially passing through the wire drawing assemblies are synchronous or sequentially reduced. A wire drawing machine set is formed by linearly arraying at least three wire drawing assemblies in a stepped mode, and the wire drawing machine set is directly connected with a take-up cylinder or continuously connected ...

Data storage device

File recovery method, system and DVR (Digital Video Recorder)

The embodiment of the invention discloses a file recovery method, a system and a DVR (Digital Video Recorder). The method comprises the following steps of: updating the index information of a video buffer file according to a preset time interval by the DVR in a process of writing video data in the video buffer file; acquiring the index information of the video buffer file when a writing period is not reached and the DVR is powered down and restarts; and writing the video data in the video buffer file into a CD through a CD writer according to video data offset indicated in the index information. The embodiment of the invention can acquire video data unwritten into the CD through the video data offset in the index information after the DVR is powered down and restarts so as to prevent video data unwritten into the CD for storage in the DVR from losing and ensure the integrity of a writing file. Without changing the hardware of a traditional DVR system, the embodiment of the invention can ...

Method and device for regulating exposure

The embodiment of the invention discloses a method for regulating exposure, which is characterized by dividing the lightness interval of a system into at least three subintervals in advance, respectively setting a fitting function for each subinterval, and presetting an object lightness value, an upper limit value and a lower limit value thereof. The method comprises the following steps: obtaining parameter values at the current time, wherein the parameter values comprise a lightness statistic value of an input image at the current time; when the lightness statistic value is not within the interval composed of the upper limit value and the lower limit value of the object lightness value, judging the subinterval to which the lightness statistic value belongs; and regulating the exposure through the fitting function corresponding to the subinterval to which the lightness statistic value belongs. The embodiment of the invention further discloses an exposure regulating device. The embodiment ...

Method and device for storing macro block information

The invention discloses a method and a device for storing macro block information. The method comprises the following steps of: setting an approach macro block relevance NMA memory unit, wherein the number of the NMA memory units is twice of the number N of macro blocks of each row in an image frame, wherein N is a natural number; storing the NMA marks of the macro blocks in the top row in each strip via N NMA memory units; and storing the NMA marks of the macro blocks in non-top row in each strip via the residue N NMA memory units. When the macro block information is stored by applying the embodiment of the invention, a memory unit is distributed for each macro block in the top row of each strip only according to different positions of the macro blocks without distributing the memory unit for each macro block, and the NMA mark is stored by one memory unit as for the macro block in non-top row on the same horizontal position, thereby reducing the amount of the memory units, and especially ...

Method and device for storing and retrieving image data on digital hard disk video recorder

The invention discloses a method and a device for storing and retrieving image data on a digital hard disk video recorder. In the device, the hard disk is divided into at least one partition, wherein each partition comprises an index file and at least one archive file. The method for storing the image data comprises the following steps of: when acquiring the image data, determining the archive file for the image data through the index file; writing the image data which is added with archive header structural information and additional information of the image data into the archive file sequentially to store; and recording and updating the relevant information of the archive filed and the partition in the index file in real time. The method for storing the image data has the advantages of avoiding the generation of file fragmentation and providing convenience for the export of the images.

Video detection method and system thereof

The invention discloses a video detection method and a system thereof, relating to a traffic management system. The video detection method comprises the following steps of: calculating image characteristic information according to a current detected image and a candid image; carrying out frontlighting compensation when a frontlighting condition is generated according to the calculated image characteristic information; and carrying out backlighting compensation when a backlighting condition is generated. The invention can effectively reduce or solve the problem of leakage trigger under the conditions of backlighting, frontlighting, and the like by carrying out light compensation on a camera, thereby enhancing the integral capture ratio and reducing the false trigger rate.

Method and system for establishing graphical user interface of embedded digital video recorder

Twelve bits counting compression circuit

A12-bit counting compression circuit includes a 12-bit counter offset register for registering offset data, a NOR gate input end is connected with the Q12 end of the register, the other input end is the special circuit test end C, a first NAND gate controls the signal response of the NOR gate, an input end of a second NAND gate is connected with the output end of the first NAND gate, the other input end is the offset pulse input end A, a third NAND gate controls the signal response of the second NOR gate, an input end of the fourth NAND gate is connected with the output of the third NAND gate, the other input end is the offset control end B, a 3-bit counter, the Cp3 end is connected with the output of the second NAND gate output end, a reset end R connected with the two counters separately.

Method, device and system for remotely upgrading monitoring equipment

The invention discloses a method, a device and a system for remotely upgrading monitoring equipment. The method comprises the following steps that: the monitoring equipment initiates an upgrading request for an upgrading server and receives upgrading request response which includes software version information and is returned by the upgrading server; the monitoring equipment determines file offset according to the software version information in the upgrading request response and returns an upgrading acknowledgment message including the file offset to the upgrading server; and the upgrading server transmits upgrading data after the offset to the monitoring equipment according to the file offset in the upgrading acknowledgment message. In the method, the device and the system, after the software version information is determined, the monitoring equipment and the upgrading server continuously receive data from an offset position for receiving the upgrading file for the last time after being ...

Data transmitting method, error detecting method, system thereof and device thereof

The embodiment of the invention discloses a data transmitting method, a data error detecting method, a system thereof and a device thereof. The data transmitting method comprises the following steps of: obtaining original data; packing the original data into PES packets, and writing an error detecting parameter at the head of each PES packet; and transiting the PES packets. When transmitting the PES packets and detecting the error of the PES packets, the embodiment of the invention does not need to convert the PES packets into the packets with the other modes to reduce the processing time and the transmitting time delay of the system and reduce the bandwidth consumed by the system due to additional data, and transmits the error detecting parameter through bytes in the heads of the PES packets to be capable of being compatible with the existing PES transmission definition.

Method and device for realizing alarm inputs and outputs

The invention discloses a method and a device for realizing alarm inputs and outputs, which are used for expanding the alarm inputs of a digital video recorder (DVR). The alarm input method comprises a step of presetting at least one network alarm kit. The method also comprises the following steps that: the DVR respectively establishes network connection with the network alarm kits; the DVR logs on the connected network alarm kits and sets alarm input parameters of the network alarm kits; and the DVR receives alarm input information from the network alarm kits to carry out alarm processing. The invention solves the problem of limited regions and number of the alarm inputs and outputs of the DVR, so that the DVR can expand any number of alarm inputs and alarm outputs. Moreover, the network alarm kits can be put at any position far away from the DVR through the network connection between the DVR and the network alarm kits.

Balancing circuit configurable with threshold voltage

A balancing circuit configurable with threshold voltage comprises a threshold imbalance detector, a three state buffer and a selection circuit. An output signal Vout of the threshold imbalance detector and an output signal Vbody of the three state buffer are predesigned as Vdd/2. The Vout is fluctuated as technology and temperature change, the three state buffer detects and amplifies the Vout amplitude, the output signal Vbody provides offset body voltage of a logic gate, and adjustment values are fed back to body ends of a PMOS tube and an NMOS tube of the threshold imbalance detector to make the threshold imbalance detector adjust the PMOS/NMOS tube threshold voltage balance. The invention can relieve threshold voltage imbalance caused by technology deviation and support super wide voltage adjustment ranging from normal power supply voltage to sub-threshold power supply voltage.

Network camera, network monitoring terminal and network monitoring system and method

The invention discloses a network camera, a network monitoring terminal, a network monitoring system and a method thereof, which relates to the field of security protection. The network camera is provided with an optical interface device by which an optical fiber is directly accessed to the camera, and the optical interface device comprises a format coding module, a parallel-serial conversion module and a photoelectric module. The network monitoring terminal is provided with an optical interface device by which an optical fiber is directly accessed to the terminal, and the optical interface device comprises a photoelectric module, a serial-parallel conversion module and a format decoding module. In addition, the invention also provides a network monitoring system and the method thereof. By using the built-in optical interface device of the network camera, the acquired raw video signals are processed by the format coding module, the parallel-serial conversion module and the photoelectric ...

People flow rate statistical method and system capable of removing false targets

The invention discloses a people flow rate statistical method and a system capable of removing false targets, wherein the method comprises the following steps: adopting a classifier to carry out human head detection on a current image, and determining all human heads in the current image; tracking all the determined human heads, and forming a motion trajectory of human head targets; carrying out smoothness analysis on the motion trajectory of the human head targets; and carrying out people flow rate counting in the direction of the motion trajectory of the human head targets after the analysis. Therefore, the method and the system can remove the false targets through the smoothness analysis of the trajectory of the human head targets, and further improve the detection accuracy.

Decoding method, decoder and system based on audio/video monitoring system

The invention discloses a decoding method, a decoder and a system based on an audio/video monitoring system, which are used for carrying out polling decoding on the data stream of a plurality of monitoring channels by adopting a decoding channel. The method comprises the following steps: determining the current monitoring channel corresponding to the decoding channel and decoding the current monitoring channel; and after completing decoding of the current monitoring channel, decoding the next monitoring channel according to the preset decoding sequence of the monitoring channels. The invention can effectively utilize a few of decoders to realize decoding monitoring of a plurality of monitoring points, improve the cost performance of the network audio/video decoders and simultaneously lower the cost of decoding on the wall in the monitoring system.

Data transmission control method, monitoring system and decoder thereof

The embodiment discloses a data transmission control method, a monitoring system and a decoder thereof. The monitoring system consists of a serial port keyboard, the decoder, a plurality of DVRs and a plurality of DVR cradle heads; the method comprises the steps of: leading connection to be respectively established between the decoder and the plurality of DVRs; using the decoder to receive the serial port data transmitted by the serial port keyboard, and caching the serial port data; inputting the serial port data through the serial port keyboard; and using the decoder to transmit the cached serial port data into every DVR by the connection established for every DVR. The embodiment of the invention realizes the control for the DVRs and the DVR cradle heads by the way of keyboard input, and has visual operation process and simple operation way; furthermore, the decoder can realize multi-task synchronous serial port data transmission for the DVRs, so that the serial port data can be transmitted ...

Video session terminal, system, and method

The invention provides a video session terminal, a video session system and a video session method. The video session terminal is characterized by comprising a central control module, and an audio/video input module, an audio/video output module, a multi-channel audio/video coding/decoding server, a parameter configuration module and a network interface module which are connected with the central control module respectively, wherein the central control module is used for controlling the operation of each module connected with the central control module. The multi-channel audio/video coding/decoding server of the video session terminal can code a multi-channel audio/video signal and decode a multi-channel audio/video code stream. The multi-channel audio/video coding/decoding server can process the multi-channel audio/video signal, so the video session terminal can realize a one-to-many video session. The video session terminal is provided with the central control module, so the video session ...

Data storage device

A data storage device consists of controller formed by microcontroller, buffer storage, host interface controller and data access controller; data storage media connected to data access controller of controller; multimode error detection corrector set in controller and connected to microcontroller as well as used to assemble out final mode error detection corrector being able to be compatible in data storage media.

People flow rate statistical method and system applicable to multi-angle application scenes

The invention discloses a people flow rate statistical method and a system applicable to multi-angle application scenes, wherein the method comprises the following steps: carrying out scene calibration on a detection region in an image and further dividing the detection region into a plurality of sub-regions; adopting a classifier to carry out human head detection on the current image in the sub-regions, determining all human heads in the current image; tracking all the determined human heads, and forming a motion trajectory of human head targets; and carrying out people flow rate counting in the direction of the motion trajectory of the human head targets. Therefore, the method and the system can realize the self-adaptation to various angles of a camera and expand the range of applications through the scene calibration and the automatic selection of the size of a detection window before the detection.

Method and device for storing and playing YUV file

Video monitoring system, video monitoring method and spherical camera

The invention relates to the security technology and discloses a video monitoring system, a video monitoring method and a spherical camera. A plurality of signals, such as a video signal, a control signal and the like are compounded to reduce the number of slip ring cores practically needed in signal transmission of the camera, so that the camera is adapted to a spherical camera structure. The data stream transmitted to equipment at the rear end by the spherical camera is the data stream which contains uncompressed high-definition video primary data, so that video acquisition equipment does not need complex encoding and decoding, network protocol and the like, has simple total design and reduces the power consumption. At the same time, the spherical camera has the characteristics of high real-time property, high quality of images and the like.

Method and device for adjusting image property

The invention discloses a method and a device for adjusting image property, wherein the method comprises the following steps that: obtaining the image property parameters of a YUV image; and adjusting the image property parameters according to a preset strategy, and obtaining the adjusted image property. After being applied, the method and the device provided by the embodiment for adjusting the image property omit two times of module conversion of YUV to RGB and RGB to HSV, prevent the problems of excessive calculation and to many consumed resources when the image property of the YUV image is adjusted, so that the occupied resources during the adjustment are very few because the property of the YUV image data is directly adjusted, thereby greatly improving the adjustment efficiency. In addition, the embodiment increases methods for dynamically adjusting the brightness of the image and improves the video effect of image adjustment. Through test and comparison, the adjustment effect of the ...

Video monitoring method, system and device based on virtual wall

The embodiment of the invention discloses video monitoring method, system and device based on a virtual wall. A section with any shape is used as the virtual wall in a monitoring video according to a pre-acquired video image, and target characteristics used for triggering the warning are set. The method comprises the steps of: acquiring a video image in the monitoring video; analyzing the content of the video image, obtaining characteristic information and motion track information of a moving target in the video image; and when the characteristic information of the moving target accords with the target characteristics, judging that the moving target passes through the virtual wall according to the motion track information of the moving target. The video monitoring is carried out by applying the embodiment of the invention, because the monitoring range of the set virtual wall is far more than that of the line section in a video trip, the accuracy of the video monitoring is improved, and ...

Multi-language implementation method and device of human-computer interaction interface

The invention relates to the technical field of monitoring and discloses a multi-language implementation method and a device of a human-computer interaction interface, and the method comprises the following steps: acquiring current language settings of the system; determining the current state of the system; loading element information used by the human-computer interaction interface and a language configuration file which corresponds to the current language settings of the system into a memory, and replacing character string information saved in the memory if the current state of the system is initialized state, wherein the language configuration file comprises the character string information which corresponds to one language; loading the language configuration file which corresponds to the current language settings of the system into the memory and replacing the character string information saved in the memory if the current state of the system is running state; and displaying character ...

Waste leftover material wire drawing machine and wire drawing method

The invention relates to the field of metal product processing, in particular to a waste leftover material wire drawing machine and a wire drawing method, which is designed aiming at the technical problems of lower wire drawing efficiency, time and labor consumption by manpower and higher processing cost of the traditional similar equipment. The invention has the essentials that a roller seat, a gear case, a motor and a roller form a wire drawing assembly; die cases are arranged on the roller seat; and the die cases are internally provided with friction powder. Wires sequentially pass through the die cases among the wire drawing assemblies, and the linear speeds of the wires sequentially passing through the wire drawing assemblies are synchronous or sequentially reduced. A wire drawing machine set is formed by linearly arraying at least three wire drawing assemblies in a stepped mode, and the wire drawing machine set is directly connected with a take-up cylinder or continuously connected ...

Shooting system and shooting method

The invention relates to a shooting system and a shooting method. A light-emitting device driven by an alternating driving signal is arranged close to the shooting system. The shooting system comprises a video frame driving signal generating unit and an image acquiring and generating unit, wherein the video frame driving signal generating unit is used for generating a video frame driving signal at the interval of N periods of a synchronization signal of a practical driving signal of the light-emitting device; N is an integer which is more than or equal to 1; the light-emitting device is arranged close to the shooting system; and the image acquiring and generating unit is used for acquiring video frames according to video frame driving signals so as to generating a video. In the shooting system and the shooting method, shooting is performed according to the frequency of the driving signal of the light-emitting device, so that a shot video is clear and the video brightness is stable.

Context-based self-adaption variable length decoding method and device of H.264

The invention discloses a context-based self-adaption variable length decoding method and a device of H.264. The context-based self-adaption variable length decoding method of H.264 comprises the following steps: constructing a rapid analysis lookup table in advance according to an H.264 standard code table; obtaining the lookup index of a codon to be analyzed in the rapid analysis lookup table according to the number of leading zeros of the codon to be analyzed; and according to the lookup index, finding the syntactic element value of the codon to be analyzed in the rapid analysis lookup table, wherein the syntactic element value is used for carrying out inverse quantization, inverse transformation and predictive addition processing to obtain a decoding video output image. The efficiencyof context-based self-adaption variable length decoding can be effectively improved, and simultaneously, the occupation of memory sources in the decoding process can be reduced by applying the scheme.

Method and system for realizing video matrix function

The invention discloses a method and a system for realizing a video matrix function. One decoder in a video matrix is a master decoder, while the other decoders are slave decoder, wherein the master decoder is used for maintaining decoding channel information of the master decoder and each slave decoder and each piece of encoding channel information at the front end. The method comprises the following steps of: detecting and receiving serial port data by using the master decoder; analyzing the serial port data and determining a control type; according to the serial port data, the decoding channel information of the master decoder and each slave decoder and each piece of encoding channel information at the front end, determining a control command and a control object; and transmitting the control command to the control object to realize the video matrix function corresponding to the control type. Through the method and the system, the centralized management and configuration of the decoders ...

Method, system and decoder for switching monitoring channel

The invention discloses a method, a system and a decoder for switching a monitoring channel. The method adopts at least one decoder, and each decoder is directly connected with a keyboard to receive information from the keyboard. The method comprises the following steps of: storing imported DVR channel information and imported decoder channel information into each decoder respectively; receiving switching control instructions from the keyboard, and searching the DVR channel information and the decoder channel information according to a DVR channel digital number and a decoder channel digital number respectively to acquire DVR channel identifier information and practical output channel number of the decoder; and setting parameters corresponding to the searched DVR channel identifier information into the corresponding parameters of a practical output channel of the decoder, and updating the configuration parameters of the decoder so as to realize switch of the monitoring channel. The method ...

Target classification method of video image and device

The embodiment of the application discloses a target classification method of a video image and a method. The method comprises the following steps: receiving a video image, filtering a prospective block mass obtained in the video image and taking the prospective block mass which is qualified with the preset filtering conditions as a movable target; tracking the movable target by a mean iterative shifting algorithm and extracting the movable moving target on a tracked result position; carrying out normalization processing on the extracted movable target and scanning the outline of the movable target performed with the normalization processing to acquire a characteristic statistic; and determining the type of the movable target in accordance with the characteristic statistic. The embodiment of the application uses the outline characteristics of the targets to classify the targets, thereby improving classification accuracy; by using a scale factor to carry out the size normalization processing ...

CPU console redirecting method and system and CPUs

The embodiment of the invention discloses CPU console redirecting method and system and CPUs. The system comprises a plurality of CPUs connected through buses, and the plurality of CPUs include at least one first CPU and at least one second CPU. The method comprises the following steps of: distributing buffer areas to the second CPUs on the internal memories of the first CPUs; constructing virtual bus equipment respectively on the first CPUs and the second CPUs and associating the first CPUs and the second CPUs through the virtual bus equipment; and carrying out reading and writing operations on CPU information through the buffer areas by the first CPUs and the second CPUs. In the embodiment of the invention, the information of the second CPUs is read and written on the first CPUs, and the reading and writing operations are carried out without a serial port; and moreover, in the redirecting process of a CPU console, a network is not depended, and the first CPUs can view all run progresses ...

Small picture playback method and device of digital video recorder

The invention discloses a small picture playback method of a digital video recorder, which comprises: setting a menu window as in a transparent mode; setting the size of a playback window, positioning the playback window at the position of the menu window, and filling the playback window with a transparent color; receiving a playing channel and playing date information which are selected by a user and extracting a 24-hour played file corresponding to the playing date information from a database through the playing channel; and playing the 24-hour played file in the playback window. The embodiment of the invention can solve a playback shielding problem and improve the real-time and convenience of the use of a user.