Verfahren und Vorrichtung zum Lesen von zweidimensionalen Strickkoden mit einem, verbreiterten Laserstrahl

Data reader

A system and method of determining if a surface is printed or a mobile device screen

The spectral wave length signature of a surface 20 is acquired and compared to a known spectra and a scanner 32 scans the surface in at least one of an illumination and a non-illumination mode based on the comparison. If the spectrum signature corresponds to the known spectra the surface can be scanned in the illumination mode but if it cannot be determined to correspond to the known spectra then the surface is scanned in a 50/50 duty cycle between illuminated and no-illuminated modes. The wavelength spectrum may be acquired from captured light using a sensing element 34 and a diffractive element, coloured filters, or a two dimensional imaging lens having chromatic aberration. The surface may be printed or a mobile device screen and scanned using an image-based scanner 32 for features such as a barcode and the known spectra can include those of sunlight, incandescent light, white LED light, warm-white fluorescent light and RGB triple-peak emission spectra.

Imaging module for supporting printed circuit boards in a predetermined angular relationship inside an imaging reader, and method of assembly

UNIFORM PACKETIDENTIFIKATIONSUND DIMENSIONING SYSTEM UNDER USE OF A LADAR WERE BASED SCANNING PROCEDURE

PROCEDURE AND EQUIPMENT FOR AUTOMATIC READING FROM STRIP CODE SYMBOLS

SCANNING ARRANGEMENT WITH HIGH SPEED

BAR CODE SCANNING AND READER (REGULATION CIRCUIT FOR ACHIEVEMENT SAVING)

EQUIPMENT FOR AUTOMATIC READING FROM STRIP CODE SYMBOLS

RING SCANNER

DATA COLLECTION SYSTEM HANDHELD WITH REPLACEABLE MODULES

STRIP SCANNING AND READER (MARKING SYSTEM WITH VISIBLE JET)

HOLOGRAPHIC LASER SCANNING DEVICE

Improved integrated code reading systems including tunnel scanners

Scanning device for capturing images

SCANNING ARRANGEMENT

AUTOMATICALLY-ACTIVATED HAND-SUPPORTABLE OMNI-DIRECTIONAL LASER SCANNING BAR CODE SYMBOL READER

A multi-mode laser-based bar code symbol reading device having a hand-supportable housing with a light transmission aperture, wherethrough visible light can exit and enter the hand-supportable housing. A laser scanning engine, disposed within the hand-supportable housing, is controlled to selectively operate in either an omni-directional reading mode or a uni~directional bar code reading mode. In the omni-directional bar code reading mode, the laser scanning engine projects pattern through the light transmission aperture, an omni-directional laser scanning pattern producing multiple laser scanning lines with substantially uniform spatial and temporal intensity characteristics at any given scanning plane parallel to the .light transmission aperture within the working distance of the system, and detects and decodes bar code symbols on objects passing through the omni-directional scanning pattern, and produces symbol character data representative of decoded bar code symbols. In the uni-directional bar code reading mode, the laser scanning engine projects through the light transmission aperture, a visible stroboscopically-pulsed omni-directional laser scanning pattern, against a single laser scanning line having substantially uniform spatial and temporal intensity characteristics at any given scanning plane parallel to the light transmission aperture within the working distance of the system, and detects and decodes bar code symbols on objects passing through the single laser scanning line, and produces symbol character data representative of decoded bar code symbols.

MULTI-LEVEL RADIO-FREQUENCY COMMUNICATION SYSTEM

2066587 9202084 PCTABS00010 A digital data communication system enables host computer to communicate with a great number of data terminals having specified functions. Communication from the host computer proceeds through a medium or long distance, high power transceiver and through a multiplex system to one of a number of portable communication devices. The communication devices preferably contain internal power supplies, such as rechargeable NiCad battery packs. The devices may be carried on a person's belt, or may be mounted within or on a service vehicle, for example, a forklift truck for use in warehouse operations or a merchandise delivery route vehicle. The communication devices are adapted to function as communication relay devices between the host computer and selected ones of the data terminals. Each communication device includes a first type, low power transceiver to communicate within a first channel and at a low power transmission level with a selected number of the data terminals which also feature such first type transceivers. Each communication device further includes a high power transceiver to communicate within a second channel with the transceiver of the host computer. A microprocessor operated address controller allows the communication device to control low power communication among the data terminals by receiving and re-transmitting locally directed communications. The controller and the controlling protocol further relays data messages between the low power communication level and host computer. In operation the device receives data messages on one of the transceivers and transmits them on the other. The communication device further may contain sufficient memory capacity to permit periodic batch type data transmission between the host computer and the communication device. The ability to switch from a high power, high precision and high cost transmission system to a low power, low precision and low cost transmission system at the level at ...

READING BAR CODES WITH A WIDE LASER BEAM

READING BAR CODES WITH A WIDE LASER BEAM Abstract of the Disclosure A height- or width-modulated bar code is decoded by scanning an oblong laser beam across the bar code. Light reflected from the bar code varies in intensity as the laser beam traverses dark and light regions of the bar code. The bar code can be decoded by locating the valleys in the variation of intensity of the reflected light, and comparing the depth of these valleys; the deepest valleys correspond to tall or wide bars and the remainder correspond to short or narrow bars.

PORTABLE OPTICAL SCANNING AND POINTING SYSTEMS

An optical scanning system for reading indicia of differing light reflectivity has an optical scan module which is adapted to be mounted on a finger of a user. A first peripheral module, preferably in the form of a wrist watch, has a receiver which detects the reflected light. A second peripheral module, mounted on the other arm of the user, communicates with the first module by radio frequency transmission. According to other aspects of the invention, the light detector may be mounted in a housing which is separate and apart from the optical scan module. According to another aspect, a laser pointer or scanner is mounted to a ring which is arranged to be worn on a single finger of the user.

HIERARCHICAL COMMUNICATION SYSTEM PROVIDING INTELLIGENT DATA, PROGRAM AND PROCESSING MIGRATION

Système de télécommunications (30) en arbre maximal dans lequel des réseaux (37, 40, 41) de communication par fil ou sans fil présentant des caractéristiques sensiblement différentes font partie d'un schèma général de liaisons entre des ordinateurs portables et mobiles (35, 36). Des copies des données, du code de programmation et des resources de traitement sont acheminées depuis leur source vers les destinations requérantes sur la base de la fréquence demandée, du coût de la liaison et des resources locales de stockage et/ou de traitement disponsibles. Chacun des éléments de réseau de configuration appropriée (33, 35, 36) joue un rôle actif dans le cheminement à travers les réseaux. De plus, des terminaux (43, 44, 45) portables de lecture des codes bidimentionnels (2-D) sont conçus pour pouvoir transmettre des images 2-D comprimées vers des serveurs d'accès stationnaire (33) qui identifient l'image du code par décodage et comparaison avec une banque de données d'images préalablement décodées ...

HOLOGRAPHIC LASER SCANNING SYSTEM AND PROCESS AND APPARATUS AND METHODS FOR DESIGNING AND CONSTRUCTING THE SAME

Holographic laser scanner (1) of ultra-compact design which produces a three - dimensional laser scanning volume that is capable of reading one-dimensional and two-dimensional bar code symbols and other types of graphical indicia within large or small scanning volumes of highly confined (i.e., controlled) geometry, using holographic optical elements (13A, 13B, 13C) including a rotating disc (7) that supports a plurality of facets (9), and at least one visible laser diode(s) (12A, 12B, 12C). The three-dimensional laser scanning volume has multiple focal planes and a highly confined geometry extending about a projection axis extending from the scanning window, including an aperture, of the holographic scanner (1).

ГОЛОГРАФИЧЕСКИЙ ЛАЗЕРНЫЙ СКАНЕР МОДУЛЬНОЙ КОНСТРУКЦИИ

... 1. Голографический лазерный сканер модульной конструкции, содержащий модуль оптической скамьи и корпуса, включающий в себя в качестве сборочных компонентов оптическую скамью, корпус с выходным окном сканирования, модуль голографического развертывающего диска и фотоприемника, включающий в себя в качестве сборочных компонентов голографический лазерный развертывающий диск, двигатель развертки, одну или более плат фотоприемника и обработки сигналов и установочный узел двигателя с платой, множество модулей сканирующих устройств, каждый из которых включает в себя в качестве сборочных компонентов модуль генерации лазерного луча, опорную пластину для установки упомянутого модуля генерации лазерного луча, зеркало поворота выходного луча и юстируемую крепежную скобу, и модуль цифровой обработки сигнала и ввода/вывода, содержащий в качестве сборочных компонентов системную плату центрального процессора (ЦП) с одним или более центральными процессорами (ЦП) и схемами ввода/вывода. 2. Голографический ...

ГОЛОГРАФИЧЕСКАЯ ЛАЗЕРНАЯ СКАНИРУЮЩАЯ СИСТЕМА, ПРОЦЕСС, УСТАНОВКА И СПОСОБЫ ЕЕ ПРОЕКТИРОВАНИЯ И КОНСТРУИРОВАНИЯ

Голографический лазерный сканер (1) сверхкомпактной конструкции, формирующий объем трехмерного лазерного сканирования, в котором обеспечивается возможность считывания одномерных и двумерных символов штрихового кода и графических знаков других видов в пределах больших или небольших объемов сканирования с весьма ограниченной (т.е. регулируемой) геометрией посредством использования голографических оптических элементов (13А, 13В, 13С), включая вращающийся диск, который поддерживает множество фасеток, и, по меньшей мере, один лазерный диод видимой области спектра (12А, 12В, 12С). Объем трехмерного лазерного сканирования имеет множество фокальных плоскостей и весьма ограниченную конфигурацию вокруг проекционной геометрической оси, которая выходит из снабженного диафрагмой окна сканирования голографического сканера (1).

HIGH SPEED AUTO-EXPOSURE CONTROL

An imager (10) with a two-dimensional array of sensors (36) processes illumination data from a subset of the sensors (36) located within a selected region of the image to determine imager settings pπor to acting upon a full frame of data In this manner, imager settings can be quickly determined by transferring and examining only the segment of the sensor array data ...

AUTOMATICALLY-ACTIVATED HAND-SUPPORTABLE OMNI-DIRECTIONAL LASER SCANNING BAR CODE SYMBOL READER

A multi-mode laser-based bar code symbol reading device having a hand-supportable housing with a light transmission aperture, wherethrough visible light can exit and enter the hand-supportable housing. A laser scanning engine, disposed within the hand-supportable housing, is controlled to selectively operate in either an omni-directional reading mode or a uni–directional bar code reading mode. In the omni-directional bar code reading mode, the laser scanning engine projects pattern through the light transmission aperture, an omni-directional laser scanning pattern producing multiple laser scanning lines with substantially uniform spatial and temporal intensity characteristics at any given scanning plane parallel to the .light transmission aperture within the working distance of the system, and detects and decodes bar code symbols on objects passing through the omni-directional scanning pattern, and produces symbol character data representative of decoded bar code symbols. In the uni-directional ...

Laser scanning bar code symbol reader employing variable passband filter structures having frequency response characteristics controlled by time-measurement of laser-scanned bar code symbol elements

The effects of paper/substrate noise are significantly reduced in multi-focal zone laser scanning systems by processing analog scan data signals with a scan data signal processor having a plurality of pass-band filters and amplifiers that are automatically selected for passing only the spectral components of an analog scan data signal produced when a bar code symbol is scanned at a particular focal zone in the laser scanning system. Two or more different pass-band filter structures can be provided for use in the scan data signal processor, wherein each pass-band filter structure is tuned to the spectral band associated with a particular focal zone in the laser scanning system. When a bar code symbol is scanned by a laser beam focused within the first focal zone or scanning range of the system, the pass-band filter structure associated with this focal zone or scanning range is automatically switched into operation. Only spectral components associated with the produced analog scan data signal ...

Laser power control arrangements in electro-optical readers

Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of operating conditions not conforming to preestablished standards, and adjust power to the laser to enhance reader performance without violating prevalent safety standards.

Point of sale (POS) based bar code reading and cash register systems with integrated internet-enabled customer-kiosk terminals

Novel POS-based bar code symbol reading systems are disclosed having an integrated customer-kiosk terminal. Also disclosed are novel POS-Based Bar Code Reading Cash Register Systems having Integrated Internet-Enabled Customer-Kiosk Terminals.

Polygon-based bioptical POS scanning system employing dual independent optics platforms disposed beneath horizontal and vertical scanning windows

A bioptical laser scanning system employing a plurality of laser scanning stations about a two independently controlled rotating polygonal mirrors. The system has an ultra-compact construction, ideally suited for space-constrained retail scanning environments, and generates a 3-D omnidirectional laser scanning pattern between the bottom and side-scanning windows during system operation. The laser scanning pattern of the present invention comprises a complex of quasi-orthogonal laser scanning planes, including a plurality of substantially-vertical laser scanning planes for reading bar code symbols having bar code elements (i.e. ladder type bar code symbols) that are oriented substantially horizontal with respect to the bottom-scanning window, and a plurality of substantially-horizontal laser scanning planes for reading bar code symbols having bar code elements (i.e. picket-fence type bar code symbols) that are oriented substantially vertical with respect to the bottom-scanning window.

Hand-held data capture system with interchangable modules including autofocusing data file reader using the slope of the image signal to determine focus

The present invention provides a novel hand-held data capture system with interchangeable modules including an autofocusing data file image reader. Several exemplary modules having various features are described. For example the invention teaches an apparatus and method for providing an interchangeable RF module, an interchangeable reflected image reader, two exemplary interchangeable non-scanning laser illuminated bar code reader/RF modules, and three exemplary interchangeable long range CCD reader/RF modules. Also disclosed for the described modular system are noise filtering means, a solid state laser illumination system, signal processing means, and filter, exposure control, and depth of field control means. An exemplary autofocusing system adjusts the lens to a position where the intensity change with respect to time or with respect to position is maximized. A novel focusing system employs several signal processing algorithms, including a method whereby the maximum slope of the intensity ...

Laser scanning system and scanning method for reading bar codes

A system for reading bar code symbols or the like, including one- or two-dimensional bar code symbols having a scanner for generating a laser beam directed toward a target and producing a narrow first raster scanning pattern that enables the user to manually aim and direct the beam to the location desired by the user and a second raster scanning pattern that increases in height which sweeps an entire symbol to be read, and a detector for receiving reflected light from such symbol to produce electrical signals corresponding to data represented by such symbol.

Holographic laser scanning system for producing an omni-directional scanning pattern within a 3-D scanning volume

Holographic laser scanning system employing a holographic scanning disc which generates a laser scanning pattern having overlapping astigmatic scanning planes for omni-directional code symbol scanning within a 3-d scanning volume.

Handheld data entry terminal having dual trigger switches

A handheld data entry terminal includes a housing and a scanning head mounted to the housing for pivotal movement between at least first and second reading positions. The scanning head, when actuated, optically scans an encoded symbol and detects light reflected from the encoded symbol while in either of the first and second reading positions. As desired, a terminal user can establish either one of first and second trigger switches mounted to the housing as a scanning head actuating switch, leaving the other of the trigger switches to be established as a shift key for determining the type of characters entered by alphanumeric data entry keys of a keypad also mounted to the housing in conjunction with an LCD display.

Optical system for scanning and reading barcodes with manually controlled scan beam length

A unitary hand-held bar code scanner and reader produces an elliptical beam, oriented with its major axis along the direction of the bars, utilizing optics employing far field diffraction effects to shape the beam and maintain its elliptical aspect (length to width ratio) constant over a distance in front of the scanner were bar codes may be located. The optics eliminates parallax even though the photodetector and light source (preferably a laser diode) are located offset from each other on a board on which the optics are mounted. A housing assembly has channels which mount the board therein without shock absorbing devices. A digital microcomputer controller and peripheral devices regulate the optical power output from the laser diode and prevents catastrophic failure, if the electrical current through the laser diode exceeds safe limits. Digital control of the gain of the electronic circuits which provide the signals from which bar code information can be decoded and for the operation ...

Digitizer for a bar code reader utilizing a first derivative signal and an analog ground comparison signal

A system for digitizing an analog electric signal generated from the photoelectronic conversion of reflected light when scanning indicia having spatially-separated, light-reflective portions, the system including a differentiator circuit for generating a first derivative signal representing a first derivative of the analog signal. An analog ground comparison circuit compares the first derivative signal and an analog ground comparison signal to generate an output signal indicating a change in the intensity of the reflected light. An output circuit generates a digital output signal corresponding to the digital signal.

Bar code scanning assembly with cantilevered or torsionally vibrating flexural member

An optical scanner module, for use in a bar code reader, has an electromagnetic coil across which is disposed a thin flexible strip. Mounted to the center of the strip is an optical element, such as a lightweight mirror, and a magnetic element, such as a permanent magnet. When an AC signal is applied to the electromagnetic coil, a varying magnetic field is produced which interacts with the fixed magnetic field of the magnet causing the magnet and mirror assembly to flex the flexible strip (e.g., in a twisting motion), thereby changing the spatial orientation of the mirror. By suitably driving the electromagnetic coil, the mirror can be made to oscillate, thereby converting a laser beam directed onto the mirror into a scanning laser beam. The entire module is compact, inexpensive to manufacture, and robust. Additional robustness may be provided by incorporating shock-absorber material between the flexible strip and the electromagnetic coil, and protecting the mirror by covering the front ...

Automatic laser scanning system and method of reading bar code symbols using same

A fully automatic bar code symbol reading system having an hand-supportable laser bar code reading device which can be used in either an automatic hands-on mode of operation, or in an automatic hands-free mode of operation. The system includes a scanner support frame for supporting the hand-supportable device in a user-selected mounting position, and permits complete gripping of its handle portion prior to its use in the hands-on mode of operation. In general, the hand-supportable bar code reading device has long-range and short-range modes of object detection, bar code presence detection and bar code symbol reading. The long-range mode is automatically selected when the hand-supportable bar code reading device is placed within the scanner support stand during the automatic hands-free mode of operation. Whenever the hand-supportable bar code reading device is picked up from the support stand and used in its hands-on mode of operation, the short-range mode is automatically selected to provide ...

Data communication system with adapter for removable coupling of portable data terminals

A vehicle for transport, fork lift or delivery route operations, for example, includes on-board peripherals which are coupled through a Local Area Network (LAN) into a data system. A LAN data bus provides selective access to the peripherals or data devices such as, for example, a large area display, a keyboard, a printer and a data terminal. The data system controls or provides data on tasks executed by or in connection with the operation of the vehicle. To increase the versatility of the vehicle, the data terminal, multiple data terminals, or any of the other data devices may be removably coupled to the LAN to be operable externally of the vehicle. A mobile mount adapter provides a secure electrical connection of a respective data terminal to the LAN to removably incorporate the data terminal into the data system. The data terminal includes base contact areas which are contacted by spring contacts of the adapter. An "open face" of a disclosed adapter allows a cable for a scanner or other ...

Methods and apparatus for scan pattern selection and selective decode inhibition in barcode scanners

Methods and apparatus for switching between scan patterns produced by a barcode scanner and for switching between allowing and inhibiting decoding of barcodes are disclosed. Depending on the position of a multiposition switch controlled by an operator, the scanner produces an omnidirectional scan pattern and immediately decodes barcodes falling within the field of view of the scanner, produces a single line scan pattern but inhibits decoding of barcodes until the switch is moved to a position to select allowing decoding of barcodes, or produces a single line scan pattern and immediately decodes barcodes falling within the field of view of the scanner. If the scanner has been set to decode barcodes using a single line scan pattern, a delay is imposed between the time the switch is set to select producing an omnidirectional scan pattern and the time at which the scanner begins to produce the omnidirectional scan pattern.

Anpassbarer Strichkodeleser

Controlling electronic apparatus in depedence on light level

A method of controlling electronic apparatus having a plurality of states comprises generating a detection signal according to external light level, making a transition from a first state to a different second state and vice versa in response to the detection signal, and varying the light detection sensitivity depending on the detection signal when a state transition is made. The sensitivity is reduced by an amount which increases as the time for which the detection signal remains unchanged increases. Thus the sensitivity to external light level changes is optimised depending on the surrounding environment. If a label is not detected within 10 seconds in a bar code reader, the initial state is changed to a state in which the laser output is reduced to 50%. If a label is still not detected but the light level falls below an initial threshold, the threshold is reduced and the laser is returned to its initial 100% state.

Combination range laser scanner utilizing periodic range switching

A combination range optical scanner includes a short distance laser 22 and a long distance laser 20. A scan mirror 40 is oscillated by a motor 50 and scans a beam from one of the two lasers across a field of view. A controller turns the two lasers on and off such that both a short distance scan and a long distance scan are automatically performed. The rate at which the controller turns the lasers on and off may be synchronized with the oscillation rate of the scan mirror. A collection mirror 34 may include two facets 30,32, integrally formed therewith, where the two lasers are respectively directed toward the two facets.

A system and method of determining if a surface is printed or a mobile device screen

PORTABLE DATA COLLECTION SYSTEM WITH EXCHANGEABLE MODULES AND INTERACTIVE GATE CIRCUITS

SCANNING MODULE FOR OPTICAL SCANNERS FOR READING OPTICAL INFORMATION

LASER SWEEP DEVICE AND SCANNING PROCEDURE FOR READING FROM BAR CODES

HIERARCHICAL COMING UNIVERSITY DOCK CLAY/TONE SYSTEM WITH INTELLIGENT MIGRATION OF DATA, PROGRAMS AND PROCESSING

IMPROVED INTEGRATED CODE READER SYSTEMS WITH TUNNEL SCANNER

PROCEDURE FOR THE ENTERPRISE OF AN OPTICAL CODE READER

OPTO-ELECTRONIC DEVICE

PORTABLE OPTICAL ABTAST-UND SHOWING SYSTEM

AUTOMATICALLY ACTIVATIONS, PORTABLE ONE LASER LINE CODE SCANNER WITH DATA COMMUNICATION DEVICE

MULTI-LEVEL RADIO COMMUNICATION SYSTEM

Laser scanning system and method employing corner-projected orthogonal laser scanning patterns

HAND-HELD DATA CAPTURE SYSTEM WITH INTERCHANGEABLE MODULES AND INTERACTIVE CONTROL CIRCUITS

UNITARY PACKAGE IDENTIFICATION AND DIMENSIONING SYSTEM EMPLOYING LADAR-BASED SCANNING METHODS

A fully automated package identification and measuring system (300), in which an onmidirectional holographic scanning tunnel (100) is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem (500, 600) is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray- tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.

PORTABLE OPTICAL SCANNING AND POINTING SYSTEMS

An optical scanning system for reading indicia of differing light reflectivity has an optical scan module which is adapted to be mounted on a finger of a user. A first peripheral module, preferably in the form of a wrist watch, has a receiver which detects the reflected light. A second peripheral module, mounted on the other arm of the user, communicates with the first module by radio frequency transmission. According to other aspects of the invention, the light detector may be mounted in a housing which is separate and apart from the optical scan module. According to another aspect, a laser pointer or scanner is mounted to a ring which is arranged to be worn on a single finger of the user.

LASER SCANNING SYSTEM & SCANNING METHOD FOR READING BAR CODES

A scanner determines whether a target is a bar code symbol and, if so, whether that symbol is one-dimensional or two-dimensional. For two-dimensional symbols, the scanner aligns a scanning pattern with the symbol and expands the scanning pattern to reach only to the top and bottom edges of the symbol, not beyond. The scanner also has a microprocessor-control scanning engine that uses a coil to drive a scanning element and pick up feed back signals from the scanning element. A pulse-width-modulated regulator also provides fast and efficient operation for driving the coil. The scanning engine can also be designed to generate a pattern that precesses across the target, and a powerful interface to the scanning engine allows decoding and control logic to work efficiently with and independently of the scan engine.

METHOD AND APPARATUS FOR MACHINE READING OF RETROREFLECTIVE VEHICLE IDENTIFICATION ARTICLES

... 43388 CAN 4A An improved method and apparatus for machine reading of license plate numbers on license plates uses separate illumination sources to (1) identify and locate the license plate image within a field of view, and (2) to read the license plate number from the license plate image. The use of separate sources allows the use of preferred equipment and reduces power consumption of the system. PF-A.14 ...

LONG RANGE OPTICAL READER

An optical reader (5) including an image sensor (32), imaging optics (40), a short range aiming assembly, and a long range aiming assembly. The short range aiming assembly may comprise a plurality of LEDs. The long range aiming assembly may comprise a laser diode assembly (18) which projects an aiming pattern that is readily visible at reading distances of several feet. The optical reader can be configured so that long range aiming assembly is enabled or disabled depending upon a present operating condition.

Reading bar codes with a wide laser beam

A height- or width-modulated bar code is decoded by scanning an oblong laser beam across the bar code. Light reflected from the bar code varies in intensity as the laser beam traverses dark and light regions of the bar code. The bar code can be decoded by locating the valleys in the variation of intensity of the reflected light, and comparing the depth of these valleys; the deepest valleys correspond to tall or wide bars and the remainder correspond to short or narrow bars.

High speed scanning arrangements

High speed scanning arrangements in scanners for reading bar code symbols by oscillating a scanner component in single or multi-axis scan patterns.

BARCODE READER HAVING CALIBRATION OF SCANNER IMAGE BRIGHTNESS WITH MULTIPLE FOVS FROM A SINGLE SENSOR

A barcode reader having calibration of scanner image brightness with multiple FOVs from a single sensor is disclosed herein. An example barcode reader includes an imaging system having a first and second FOV. A first illumination system is configured to illuminate the first FOV. The first illumination system has a first tolerance range and a first characteristic. A second illumination system is configured to illuminate the second FOV. The second illumination system has a second tolerance range and a second characteristic. The first characteristic is established to achieve a minimum desired brightness at a beginning portion of the first tolerance range and a maximum desired brightness at an end portion of the first tolerance range. The second characteristic is established to achieve a minimum desired brightness at a beginning portion of the second tolerance range and a maximum desired brightness at an end portion of the second tolerance range.

Intensity compensated scanning system

An intensity compensated scanning system includes laser means for providing a laser beam; scanner means for sweeping the laser beam in an arcuate path across a surface to be scanned; means for sensing the return laser beam reflected from the surface to be scanned; means for quantifying the decrease in the intensity of the return laser beam at the scan extremity portion relative to the intermediate scan portion; and means responsive to the means for quantifying for varying the power to the laser means at the scan extremity portion relative to that at the intermediate scan portion for balancing the intensity of the return laser beam reflected from the surface to the means for sensing.

Scanner module for symbol scanning system

An optical scanner module for directing a light beam to scan an optically encoded symbol includes an optical element mounted for oscillatory motion to scan the light beam in one direction by a flex element capable of torsional flexure. This oscillatory motion is induced by the interacting magnetic fields established by a permanent magnet mounted to the flex element and an electromagnetic coil driven by an AC current. Bidirectional light beam scanning is achieved by mounting an assembly of the flex element, optical element and permanent magnet to one or more additional flex elements for oscillatory motion to scan the light beam in a second direction. This oscillatory motion is induced by the inclusion of an additional permanent magnet and/or electromagnetic coil.

Graphical barcode readers that are configured for glare reduction

A method for glare reduction may be implemented by a graphical code reader. The graphical code reader includes an optic system, a plurality of light sources, and a control system. The control system is configured to determine that glare is present in an image captured by the optic system by identifying reflection from at least one of the plurality of light sources. The control system may take a corrective action to reduce the glare in subsequent images. The control system may be configured to take a first corrective action if a diffraction pattern is present at a periphery of the glare, and take a second corrective action if a diffraction pattern is not present at the periphery of the glare.

OPTICAL SCANNING FOR LINE-OF-SIGHT COMMUNICATIONS TO OPTICAL TAGS

An optical communication device can address these and other issues by utilizing a system and method in which an optical device emits a series of laser pulses that trace a spiral path over a coverage area. Each laser pulse containing a packet of information modulated at a relatively rate to help mitigate adverse effects from device movements, scintillation, and the like. The beam width of the laser, speed of the scan (along the spiral path), and number of laser pulses can be configured such that corresponding response pulses (e.g., retro-modulated pulses) received from an illuminated tag within the coverage may have a variety of different amplitudes, increasing the likelihood that at least one of the response pulses will have power characteristics that facilitate a proper decoding of the response pulse. 1. An optical device comprising:a laser;a laser-steering unit configured to direct laser light generated by the laser;a receiver unit; and cause the laser to generate a plurality of pulses of laser light during a scanning process;', 'cause the laser steering unit to direct the plurality of pulses of laser light along a spiral path during the scanning process; and', 'for each of one or more pulses of received laser light detected with the receiver unit corresponding to respective one or more pulses of the plurality of pulses of laser light, determine whether the pulse of received laser light has been modulated to include predetermined information., 'a processing unit communicatively coupled with the laser, laser-steering unit, and receiver unit, the processing unit configured to2. The optical device of claim 1 , wherein the laser claim 1 , the laser-steering unit claim 1 , the receiver unit claim 1 , and the processing unit are at least partially housed in a mountable body configured to be mounted to another apparatus.3. The optical device of claim 1 , wherein the processing unit is configured to cause the laser to generate the plurality of pulses of laser light over ...

Automatically-actived wireless hand-supportable laser scanning bar code symbol reading system with data transmission activation switch and automatic communication range dependent control

A wireless automatically-activated bar code symbol reading system for use in a work environment, the system including a device controller programmed to automatically detect when a wireless hand-supportable bar code symbol reader is located inside of a predetermined RF communication range based on measuring the strength of a detected reference signal, and thereupon to automatically transmit to a first RF-based transceiver, the symbol character data string produced while the wireless hand-supportable bar code symbol reader is located inside of the predetermined RF communication range. Also, the device controller is programmed to automatically detect when the wireless hand-supportable bar code symbol reader is located outside of the predetermined RF communication range based on measuring the strength of the detected reference signal, and thereupon to automatically collect and store in the data packet group buffer, the symbol character data string produced while the wireless hand-supportable ...

Portable optical scanning and pointing systems

An optical scanning system for reading indicia of differing light reflectivity has an optical scan module which is adapted to be mounted on a finger of a user. A first peripheral module, preferably in the form of a wrist watch, has a receiver which detects the reflected light. A second peripheral module, mounted on the other arm of the user, communicates with the first module by radio frequency transmission. According to other aspects of the invention, the light detector may be mounted in a housing which is separate and part from the optical scan module. According to another aspect, a laser pointer or scanner is mounted to a ring which is arranged to be worn on a single finger of the user.

Combination range laser scanner utilizing periodic range switching

A combination range optical scanner includes a short distance laser and a long distance laser. A scan mirror is oscillated by a motor and scans a beam from one of the two lasers across a field of view. A controller turns the two lasers on and off such that both a short distance scan and a long distance scan are automatically performed. The rate at which the controller turns the lasers on and off may be synchronized with the oscillation rate of the scan mirror. A collection mirror may include two facets, integrally formed therewith, where the two lasers are respectively directed toward the two facets.

Bar code symbol scanner with reduced power usage to effect reading

Electrical power consumption is saved in a low-cost scanner for reading bar code symbols by oscillating one of the scanner components either by mechanical power alone or by a low-power electrical drive.

Data capture system with communicating and recharging docking apparatus, and modular printer and hand-held data terminal means cooperable therewith

In an exemplary embodiment, a portable data device is insertable into a docking receptacle for communication with other devices. In route delivery operations and the like, a hand-held computerized data terminal is coupled with a docking unit for recharging of its batteries and communication e.g. with a printer. Preferably, the terminal can be loaded into the docking receptacle with a single motion. The terminal may be automatically positively locked in the receptacle as it is loaded with one hand; thus the terminal may be securely held in the receptacle of a portable printer even if the printer is dropped or subjected to a severe jolt. Removal may be accomplished by a push button-eject or by a single motion with one hand. The disclosure includes various docking configurations which may have non-critical alignment requirements, provide electrical contacts sealed against moisture, and economically accommodate different size terminals and the like. Programmed control of the printer-terminal ...

Bar code reader for reading both one dimensional and two dimensional symbologies with programmable resolution

A plurality of the areas of differing light reflectivity of a bar code symbol or the like are simultaneously illuminated using, for example, a beam of light that has an elongate cross-section. The light beam is swept over the symbol to be read in a direction transverse to the elongated dimension of the illuminated region so that a two-dimensional area of the symbol is illuminated over time. The reflected light is sensed by a 1D CCD array. A microprocessor within the scanner provides visual feedback to aid a user in aligning the device, and also provides for a selectable aspect ratio for the image, a selectable image resolution and size, a selectable aspect ratio of the illumination, and a selectable pixel size. All of these options may be programmed within the microprocessor, enabling the device to read a large variety of two-dimensional symbols.

Bar code symbol reading system having automatic hand-supportable bar code symbol reading device and stand for supporting projected scan field thereof

An automatic bar code symbol reading system comprising components for carrying out object detection, scanning, photoreceiving, A/D conversion, bar code presence detection, symbol decoding, data format conversion, data storage and data transmission functions. In general, the bar code symbol reading device includes a control system having a plurality of control centers that control the operation of the system components in accordance with preselected system control operations. Each of the control centers are responsive to control activation signals generated by certain of the system components upon the occurrence of predefined conditions. Certain of the control centers are capable overriding other control centers to provide diverse control capabilities which facilitates execution of intelligent operations and power consumption, during bar code symbol reading.

Hand-held optically readable character set reader having automatic focus control for operating over a range of distances

A hand-held optically readable information set reader having one or more photosensor arrays, at least one information set illuminator, and an information set image transfer system for projecting a readable image of an information set onto the one or more photosensor arrays.

Reading apparatus, control method and storage medium storing program thereof

When a reading target object that includes a light emitting region is set as a reading target, the light emitting region is detected by a reading mechanism of a reading unit. The reading unit is caused to read the detected light emitting region, and in the reading, a read operation by the reading unit is controlled based on change of an amount of light received from the light emitting region.

Laser scanning system and scanning method for reading bar codes

A scanner determines whether a target is a bar code symbol and, if so, whether that symbol is one-dimensional. For two-dimensional symbols, the scanner aligns a scanning pattern with the symbol and expands the scanning pattern to reach only to the top and bottom edge of the symbol, not beyond. The scanner also has a microprocessor-control scanning engine that uses a coil to drive a scanning element and pick up feed back signals from the scanning element. A pulse-width-modulated regulator also provides fast and efficient operation for driving the coil. The scanning engine can also be designed to generate a pattern that precesses across the target, and a powerful interface to the scanning engine allows decoding and control logic to work efficiently with and independently of the scan engine.

Portable optical scanning and pointing systems

An optical scanning system for reading indicia of differing light reflectivity has an optical scan module (1) which is adapted to be mounted on a finger of a user. A first peripheral module (7), preferably in the form of a wrist watch, has a receiver (920) which detects the reflected light. A second peripheral module (9), mounted on the other arm of the user, communicates with the first module by radio frequency transmission. According to other aspects of the invention, the light detector may be mounted in a housing which is separate and apart from the optical scan module. According to another aspect, a laser pointer or scanner is mounted to a ring (1) which is arranged to be worn on a single finger of the user. ...

Improved integrated code reading systems including tunnel scanners

The disclosure relates to systems and techniques for reading optical codes, and more particularly to code reading systems with plural imaging or scanning modules pointed in various directions toward a target volume, which increase the likelihood that a code symbol on an arbitrarily oriented object in the target volume will be read. Other aspects of the invention relate to use and configuration of hand held readers, docking devices, operator side rails, arched tunnels and mirrors for increasing the coverage of the system. Additional aspects of the invention relate to components associated with point of sale installations or code reading terminals including integrated scales, input pads, system controls and displays.

Dünner Abtastermodul

Streifenkodeleser zum Lesen von ein/zweidimensionalen Symbolen mit programmierbarer Auflösung

Kompakte Strichkode-Abtastanordnung

Cuvette identification unit, has receiving unit with receiver that is arranged relative to illumination unit so that it receives diffused light and provides signal which is proportional to received diffused light

The unit has an illumination unit (20) with a light source and optical units for generating a light beam that is focused on a preset beam diameter. A receiving unit (40) has a receiver (42) which is arranged relative to the illumination unit in such a manner that it receives the diffused light, which arises while impinging the light beam at the cuvette surface, and provides a signal which is proportional to the received diffused light.

Method of controlling electronic apparatus

Signal reading control method for barcode scanner

A system and method of determining if a surface is printed or a mobile device screen

A system and method of determining if a surface is printed or a mobile device screen

Determining if a surface 20 contains print or is a screen of a mobile device comprises acquiring a spectral wavelength signature of the surface and comparing the spectral wavelength signature of the surface to RGB triple-peak emission spectra. Whether a surface contains print or is a mobile screen may also be determined by scanning the surface with an image based scanner and using image based software to compare information about aspect ratios of mobile devices and their screens and features associated with mobile devices features such as the presence of a hand with an captured image of the surface and surrounding background. The surface is scanned using an image-based scanner 32 for features such as a barcode in a non-illumination mode if the surface is identified as a mobile device screen but otherwise may be scanned in illumination mode. The wavelength spectrum may be acquired from captured light using a diffractive element, coloured filters, or a two dimensional imaging lens having ...

A system and method of determining if a surface is printed or a mobile device screen

An imaging module for reading a target by image capture

Imaging module for supporting printed circuit boards in a predetermined angular relationship inside an imaging reader, and method of assembly

An imaging module 40 for reading targets (e.g. barcodes) by image capture is mounted as a unitary assembly within an imaging reader. An imager 10 is mounted on a first printed circuit board (PCB) 38, and an interface connector 130 is mounted on a second PCB 68. The first (engine) PCB is in direct, surface-area contact with first chassis walls of the readers chassis and is positioned to lie in an upright first plane. The second (handle) PCB is in direct, surface-area contact with second chassis walls and is positioned to lie in a second plane that is inclined at a tilt angle relative to the first plane. The first and second chassis walls are constituted as a one-piece support that maintains the tilt angle between the PCBs. The relative orientations of the PCBs could be fixed by use of posts (88), cut-outs (86), lugs (112) and fasteners (90). The invention generally relates to the typical gun-shaped barcode scanner or reader, and removes the need for support brackets within the chassis.

Imaging module for supporting printed circuit boards in a predetermined angular relationship inside and imaging reader, and method of assembly

The invention relates to an imaging module 40 for reading a target (e.g. a barcode). The imaging module comprises: a chassis (70) having a plurality of chassis walls (82) defining a first interior compartment 74 having an opening, at least one of the walls terminating in an outer wall surface at the first opening; a light source 62 supported within the chassis and outside the first interior compartment; an imager (10) for capturing an image through the opening; and, a light-transmissive window (26) mounted to the outer wall surface and covering the opening. Furthermore, the window is positioned relative to the chassis walls to resist entry of light emitted by the light source into the first interior compartment. The light-transmissive window could be held removably against or fixedly mounted to the outer wall surface, and the window could be configured to environmentally seal the interior of the handheld housing. In another embodiment a second interior compartment 76 is provided, and the ...

ELECTROOPTICAL SWEEP DEVICE WITH EINSTÜCKIGEM RECIPROCATING FOCUSING/CREAD HEAD

CODE READ SYSTEM WITH TONE CONTROL FOR AUDIBLE SIGNAL

MULTI-LEVEL RADIO COMMUNICATION SYSTEM

READ PROCEDURE AND READER FOR AN OPTICAL CODE

THIN SCANNER MODULE

BAR CODE READER WITH OPTICAL FIBER

PORTABLE OPTICAL ABTAST-UND SHOWING SYSTEM

Accuracy-Enhanced Scanner

An accuracy-enhanced scanner provides (in response to a first user input) illumination of potential scan targets and scans (in response to a second user input) a selected scan target. The user uses the illumination to aim the scanner at the selected scan target in between providing the first and the second user inputs. The scanner has switches to communicate the user inputs, to specify an operating mode for the scanner, and/or to communicate information codes to a computing device. The scanner has one or more scan engines (such as a barcode reader or an RFID tag reader), and optionally communicates wirelessly with the computing device. A scanning system including the scanner optionally provides feedback to the user based on feedback from a host processor. The scanner is any of a Multi-Mode Ring Scanner (MMRS), a cordless hand scanner, or a Personal Digital Assistant (PDA) with an add-on scanner.

Aiming system for imaging scanner

An apparatus includes (1) an imaging lens arrangement having an optical axis, (2) an aiming light source configured to project visible light through the imaging lens arrangement to create an aiming pattern on a target object, (3) an imaging sensor detecting light from the target object through the imaging lens arrangement, and (4) a folding mirror tilted relative to the optical axis of the imaging lens arrangement. The folding mirror is positioned both on the optical path from the imaging lens arrangement to the imaging sensor and on the optical path from the aiming light source to the imaging lens arrangement. Both the imaging arrangement and the aiming arrangement share the same imaging lens.

Accuracy-Enhanced Scanner

A portable scanner with improved user feedback provides scan data to a networked computing node via a wireless interface and the Internet. The portable scanner receives user feedback information from the networked computing node via the wireless interface and the Internet. The user feedback information indicates successful entry of the scan data into a database, or alternatively successful receipt of the scan data by the networked computing node. The portable scanner sets a scan status indicator to a final state in response to the user feedback information. Optionally, the database is a remote database that a local database is synchronized with, and/or the database is associated with the networked computing node. Optionally the portable scanner is wearable. Optionally the portable scanner is compatible with barcode and/or RFID technologies. 1. (canceled)2. A method comprising:in a portable scanner, gathering scan data using a scan engine of the portable scanner;in the portable scanner, providing at least a portion of the scan data to a networked computing node via a wireless interface and the Internet;in the portable scanner, receiving user feedback information from the networked computing node via the wireless interface and the Internet, the user feedback information indicating successful entry of the at least a portion of the scan data into a database; andin the portable scanner, setting a scan status indicator of the portable scanner to a final state in response to the user feedback information.3. The method of claim 2 , wherein the networked computing node comprises a client.4. The method of claim 2 , wherein the networked computing node comprises a server.5. The method of claim 2 , wherein the database is a remote database and further comprising synchronizing the remote database with a local database.6. The method of claim 2 , wherein the database is associated with the networked computing node.7. The method of claim 2 , wherein the portable scanner is a ...

Multiple platform support system and method

A portable data terminal including a processor having an instruction set architecture and data storage means configured to store a plurality of operating systems and a virtual machine monitor application program configured to receive at least one instruction from each operating system, communicate with the processor according to the instruction set architecture, and switch operating system access to the processor upon receipt of an electrical signal representing an event.

Reading device, commodity data registration system, and program

A reading device according to an embodiment includes a scanner configured to read code information indicated by a code symbol, a holder configured to detachably hold the scanner, a detecting unit configured to detect a first state in which the scanner is held by the holder and a second state in which the scanner is detached from the holder, and a setting-condition changing unit configured to, if the detecting unit detects the second state, set setting conditions relating to the reading by the scanner such that a reading distance of the scanner is shorter than the reading distance in the first state.

Accuracy-Enhanced Scanner

An accuracy-enhanced scanner provides (in response to a first user input) illumination of potential scan targets and scans (in response to a second user input) a selected scan target. The user uses the illumination to aim the scanner at the selected scan target in between providing the first and the second user inputs. The scanner has switches to communicate the user inputs, to specify an operating mode for the scanner, and/or to communicate information codes to a computing device. The scanner has one or more scan engines (such as a barcode reader or an RFID tag reader), and optionally communicates wirelessly with the computing device. A scanning system including the scanner optionally provides feedback to the user based on feedback from a host processor. The scanner is any of a Multi-Mode Ring Scanner (MMRS), a cordless hand scanner, or a Personal Digital Assistant (PDA) with an add-on scanner.

System and method of determining if a surface is printed or a mobile device screen

A system and method of determining if a surface contains print or is a screen of a mobile device is provided. The method is comprised of the steps of: acquiring a spectral wavelength signature of the surface; comparing the spectral wavelength signature of the surface to RGB triple-peak emission spectra; scanning the surface with an image-based scanner in non-illumination mode based upon the spectral wavelength signature of the surface corresponding to the RGB triple-peak emission spectra, and scanning the surface with an image-based scanner in illumination mode based upon the spectral wavelength signature of the surface not corresponding to the RGB triple-peak emission spectra.

INFORMATION RECORDING MEDIUM AND AUTHENTICITY DETERMINATION METHOD

An information recording medium according to one embodiment includes a substrate, a first image, and a second image. The first image is provided on the substrate, emits light when irradiated with first excitation light having a first wavelength, and includes phase-modulated first information. The second image is provided on the substrate, emits light when irradiated with second excitation light having a second wavelength different from the first wavelength, and includes phase-modulated second information. 1. An information recording medium comprising:a substrate;a first image that is provided on the substrate, emits light when irradiated with first excitation light having a first wavelength, and includes phase-modulated first information; anda second image that is provided on the substrate, emits light when irradiated with second excitation light having a second wavelength different from the first wavelength, and includes phase-modulated second information.2. The information recording medium according to claim 1 , whereinthe second image is superimposed at least partially on a region in which the first image is formed, andthe first information and the second information form phase-modulated third information when the first image and the second image are irradiated with the first excitation light and the second excitation light.3. The information recording medium according to claim 1 , whereinthe first image emits light in a visible bandwidth when irradiated with the first excitation light having the first wavelength in an invisible bandwidth, andthe second image emits light in a visible bandwidth when irradiated with the second excitation light having the second wavelength in an invisible bandwidth.4. The information recording medium according to claim 3 , whereinthe first wavelength is in an ultraviolet bandwidth, andthe second wavelength is in an infrared bandwidth.5. The information recording medium according to claim 4 , whereinthe first wavelength is 365 nm, ...

APPARATUS FOR ACQUIRING 3-DIMENSIONAL MAPS OF A SCENE

An active sensor for performing active measurements of a scene is presented. The active sensor includes at least one transmitter configured to emit light pulses toward at least one target object in the scene, wherein the at least one target object is recognized in an image acquired by a passive sensor; at least one receiver configured to detect light pulses reflected from the at least one target object; a controller configured to control an energy level, a direction, and a timing of each light pulse emitted by the transmitter, wherein the controller is further configured to control at least the direction for detecting each of the reflected light pulses; and a distance measurement circuit configured to measure a distance to each of the at least one target object based on the emitted light pulses and the detected light pulses.

TOGGLING ACTIVATION OF LASERS IN SCANNER SYSTEMS

Scanners, methods, and computer storage media having computer-executable instructions embodied thereon that process variable sized objects with high package pitch on a moving conveyor belt are provided. The scanners are laser scanners that include at least two laser diodes, sensors, and field programmable gate arrays processors. The at least two laser diodes have different focuses. Each diode generates a laser beam when excited by an activation signal and an appropriate modulation. The sensors within the laser scanner device measure light reflected from a target on the objects. The processors toggle activation among the at least two laser diodes based on measurements sensed from the light reflected from the target. 1. A computer-implemented method executed by a laser scanner for activating lasers to process objects , the method comprising:obtaining one or more measurements from light reflected on a surface having coded characters;selecting one or more lasers based on the one or more measurements that include a region of interest measurement; andactivating one of the selected lasers to decode the coded characters, wherein the activated laser is based on reliable measurements for the light reflected and measured by sensors in the laser scanner to determine the region of interest measurements.2. The computer-implemented method of claim 1 , wherein the region of interest measurements is based on a modulated digital signal having a known carrier frequency.3. The computer-implemented method of claim 1 , wherein the one or more measurements include scan position measurements.4. The computer-implemented method of claim 1 , wherein the one or more measurements include amplitude measurements.5. The computer-implemented method of claim 1 , wherein light is processed by at least one angle sensor in the laser scanner to identify the position of a rotating polygon that reflects light that is discrete from the reflected light.6. The computer-implemented method of claim 1 , further ...

READING A PLURALITY OF CODES

A code reading device for the parallel reading of a plurality of codes on a plurality of objects arranged next to one another is provided that has a camera unit having at least one camera head for recording an image of the objects, a control and evaluation unit that is configured to localize code zones of the codes in the image and to read the code information of the codes, and a display unit to present the image and to mark the read codes and/or objects having read codes, Here a hand reading unit for reading codes is provided to subsequently read codes not read by means of the camera unit and to transfer the subsequently read code information to the control and evaluation unit. 1. A code reading device for the parallel reading of a plurality of codes on a plurality of objects arranged next to one another , the code reading device comprising:a camera unit having at least one camera head for recording an image of the objects,a control and evaluation unit that is configured to localize code zones of the codes in the image and to read the code information of the codes,a display unit to present the image and to mark the read codes and/or objects having read codes, anda hand reading unit for reading codes to subsequently read codes not read by means of the camera unit and to transfer the subsequently read code information to the control and evaluation unit.2. The code reading device in accordance with claim 1 ,that has a plurality of camera heads, with the control and evaluation unit being configured to assemble the image data of the camera heads into one common image and/or to read the codes in the respective image data and to compare them with one another.3. The code reading device in accordance with claim 1 ,wherein the objects are located in a conveying unit.4. The code reading device in accordance with claim 1 ,wherein the objects are packs each having a unique code.5. The code reading device in accordance with claim 4 ,wherein the packs are for one of medicinal ...

OPTICAL READING APPARATUS HAVING VARIABLE SETTINGS

A laser scanning indicia reading apparatus () comprises one or more adjustable aperture assemblies () for adjusting the diameter of a laser beam and adjustable lens assemblies () for adjusting the distance of a laser beam waist (W). 1. An indicia reading apparatus comprising:a housing; a laser diode assembly;a scanning mechanism for scanning a laser beam in a scan pattern across a target substrate; an adjustable aperture assembly for adjusting a beam diameter of emitted laser light;a lens assembly for adjusting a waist distance of a laser beam canned by the scanning mechanism;wherein the indicia reading apparatus is operative to output image data representing reflected light; wherein the indicia reading apparatus is operative to process image data output by the indicia reading apparatus for attempting to decode decodable indicia;a first configuration in which the adjustable aperture assembly is set to a first aperture assembly setting and the lens assembly is set to a first best focus distance setting;a second configuration in which the adjustable aperture assembly is set to a second aperture assembly setting and the lens assembly is set to a second best focus distance setting, the second aperture assembly setting being a larger diameter aperture assembly setting than the first aperture assembly setting, and wherein the second best focus distance setting is a best focus distance setting longer than the first best focus distance setting;wherein the indicia reading apparatus is operative to output first image data representing reflected laser light reflected from a target substrate with the first configuration active and is further operative to output second image data representing reflected light reflected from the target substrate with the second configuration active;wherein the apparatus is operative to attempt to decode decodable indicia utilizing the first image data and the second image data.2. The indicia reading apparatus of claim 1 , wherein the apparatus is ...

LOW-PROFILE WEARABLE SCANNING DEVICE

A code reader may include a housing configured to be wearable by a user, a scanning unit configured to scan machine-readable indicia of a target area, a user interface connected to the housing and configured to present identification data associated with the machine-readable indicia to the user, a power source disposed within the housing, a processing unit disposed within the housing, and a plurality of electrical conductors in electrical communication with the processing unit and the user interface. The processing unit may be configured to communicate a scan signal to the scanning unit to cause the scanning unit to scan the target area, receive response data from the scanning unit representative of the machine-readable indicia, generate the identification data in response to receiving the response data, and communicate the identification data to the user interface for display thereon. The electrical conductors may provide power and enable signals to be communicated. 1. A code reader , comprising:a housing configured to be wearable by a user and including a plurality of segments including at least a first segment, a second segment, and a third segment arranged to be worn around a user's wrist;at least one connector being configured to connect between at least two of the segments of the housing;a scanning unit configured to scan machine-readable indicia of a target area;a user interface connected to the first segment of the housing and configured to present identification data associated with the machine-readable indicia to the user;a power source disposed within the second segment of the housing; communicate a scan signal to the scanning unit to cause the scanning unit to scan the target area;', 'receive response data from the scanning unit representative of the machine-readable indicia;', 'generate the identification data in response to receiving the response data; and', 'communicate the identification data to the user interface for display thereon; and, 'a ...

INTEGRATED ILLUMINATION ASSEMBLY FOR SYMBOLOGY READER

Systems and methods provide an illumination assembly for a mark reader. A light transmitter is arranged in a surrounding relationship to an interior area, with the light transmitter having a proximal end and a distal end. An illumination source provides a light for transmission into the light transmitter. The light transmitter distal end allows the light from within the light transmitter to pass through and out of the distal end to provide bright field illumination and dark field illumination. The light transmitter distal end may include a first portion and a second portion, where light from within the light transmitter passes through and out of the first portion to provide bright field illumination, and light from within the light transmitter passes through and out of the second portion to provide dark field illumination. 1. An illumination assembly for a mark reader disposed along an optical viewing axis comprising:a light pipe defined by at least four adjacent sides including a first opposing pair of sides and a second opposing pair of sides, the light pipe including a chamfered edge at a distal end that directs light from a ring light source at the proximal end onto a surface as dark field; andwherein a first spacing between the first opposing pair of the sides has a length different than a length of a second spacing between the second opposing pair of the sides.2. The illumination assembly as set forth in wherein the first opposing pair of sides and the second opposing pair of sides define collectively an approximate shape of an ellipse.3. The illumination assembly as set forth in wherein at least one of the first opposing pair of sides and the second opposing pair of sides define curvilinear arcs.4. The illumination assembly as set forth in wherein both of the first opposing pair of sides and the second opposing pair of sides define curvilinear arcs.5. The illumination assembly as set forth in wherein the first opposing pair of sides and the second opposing ...

GRAPHICAL BARCODE READERS THAT ARE CONFIGURED FOR GLARE REDUCTION

A method for glare reduction may be implemented by a graphical code reader. The graphical code reader includes an optic system, a plurality of light sources, and a control system. The control system is configured to determine that glare is present in an image captured by the optic system by identifying reflection from at least one of the plurality of light sources. The control system may take a corrective action to reduce the glare in subsequent images. The control system may be configured to take a first corrective action if a diffraction pattern is present at a periphery of the glare, and take a second corrective action if a diffraction pattern is not present at the periphery of the glare. 1. A graphical barcode reader that is configured to perform glare reduction , comprising:an optic system, including an image sensor, for capturing a sequence of images of a barcode presented in a field of view of the image sensor;a plurality of light sources configured to illuminate the field of view of the image sensor; anda control system configured to, if glare is present within an image of the sequence of images, take a corrective action to reduce the glare in subsequent images, wherein the control system is configured to take a first corrective action if a diffraction pattern is present at a periphery of the glare, and take a second corrective action if a diffraction pattern is not present at the periphery of the glare.2. The graphical barcode reader of claim 1 , wherein:the first corrective action comprises adjusting gain and reducing intensity of illumination as a first function of contrast and saturation in a portion of the image consistent with a barcode pattern; andthe second corrective action comprises adjusting the gain and reducing the intensity of the illumination as a second function of contrast and saturation in a portion of the image consistent with a barcode pattern, the reduction in the intensity of the illumination of the first function being a greater ...

Device for implementing a detection function and method for operating such a device

A detection device, which includes a scanning module, a detection module operated at a distance from the scanning module, and an evaluation unit. The scanning module includes a laser light source for generating a laser beam, a deflection unit to deflect the beam, and a control unit for controlling the laser light source and the deflection unit, so that the beam is moved in a scanning pattern. The detection module includes a light detector, with which the light of the beam reflected on an object in the beam path is detected and converted into a received signal. The first laser light source is controlled so that the beam is modulated as a function of its deflection and in this way is provided with synchronization marks. The evaluation unit identifies these synchronization marks in the received signal and synchronizes the received signal with the deflection of the beam based on them.

Method and system for optimizing system settings of a laser scanner control system

A scanning device includes a laser source emitting a laser scanning beam, a movable scanning mirror reflecting the laser scanning beam towards an on object to be scanned, a mirror moving element moving the movable scanning mirror and a controller receiving an input corresponding to a range estimate from the scanning device to the object and adjusting a setting of the scanning device based on the range estimate.

Graphical barcode readers that are configured for glare reduction

A method for glare reduction may be implemented by a graphical code reader. The graphical code reader includes an optic system, a plurality of light sources, and a control system. The control system is configured to determine that glare is present in an image captured by the optic system by identifying reflection from at least one of the plurality of light sources. The control system may take a corrective action to reduce the glare in subsequent images. The control system may be configured to take a first corrective action if a diffraction pattern is present at a periphery of the glare, and take a second corrective action if a diffraction pattern is not present at the periphery of the glare.

GRAPHICAL BARCODE READERS THAT ARE CONFIGURED FOR GLARE REDUCTION

A method for glare reduction may be implemented by a graphical code reader. The graphical code reader includes an optic system, a plurality of light sources, and a control system. The control system is configured to determine that glare is present in an image captured by the optic system by identifying reflection from at least one of the plurality of light sources. The control system may take a corrective action to reduce the glare in subsequent images. The control system may be configured to take a first corrective action if a diffraction pattern is present at a periphery of the glare, and take a second corrective action if a diffraction pattern is not present at the periphery of the glare. 1an optic system, including an image sensor, for capturing a sequence of images of a barcode presented in a field of view of the image sensor;a plurality of light sources configured to illuminate the field of view of the image sensor; anda control system configured to, if glare is present within an image of the sequence of images, take a corrective action to reduce the glare in subsequent images, wherein the control system is configured to take a first corrective action if a diffraction pattern is present at a periphery of the glare, and take a second corrective action if a diffraction pattern is not present at the periphery of the glare.. A graphical barcode reader that is configured to perform glare reduction, comprising: This application is a continuation of U.S. patent application Ser. No. 15/489,648, filed Apr. 17, 2017; which is a continuation of U.S. patent application Ser. No. 15/162,588, filed May 23, 2016, which has issued as U.S. Pat. No. 9,639,727; which is a continuation-in-part of U.S. patent application Ser. No. 14/706,750, filed May 7, 2015, which has issued as U.S. Pat. No. 9,411,998; which is a continuation of U.S. patent application Ser. No. 13/903,799, filed May 28, 2013, which has issued as U.S. Pat. No. 9,027,835; which is a continuation of U.S. patent ...

GRAPHICAL BARCODE READERS THAT ARE CONFIGURED FOR GLARE REDUCTION

A method for glare reduction may be implemented by a graphical code reader. The graphical code reader includes an optic system, a plurality of light sources, and a control system. The control system is configured to determine that glare is present in an image captured by the optic system by identifying reflection from at least one of the plurality of light sources. The control system may take a corrective action to reduce the glare in subsequent images. The control system may be configured to take a first corrective action if a diffraction pattern is present at a periphery of the glare, and take a second corrective action if a diffraction pattern is not present at the periphery of the glare. 1. (canceled)2. A graphical barcode reader configured to read both barcodes printed on a substrate and barcodes displayed on a backlit display , the graphical barcode reader comprising:an optic system, including an image sensor, configured to capture a first image of a barcode presented in a field of view of the image sensor using an initial gain setting for the image sensor and a second image of the barcode using an adjusted gain setting for the image sensor, wherein the first image includes a reflective glare pattern;a plurality of light sources configured to illuminate the field of view of the image sensor; and if the reflective glare pattern is consistent with the barcode being printed on a substrate, the control system determines a first value for the adjusted gain setting; and', 'if the reflective glare pattern is consistent with the barcode being displayed on a backlit display, the control system determines a second value for the adjusted gain setting, wherein the second value is different from the first value., 'a control system configured to determine a value for the adjusted gain setting based at least in part on the following3. The graphical barcode reader of claim 2 , wherein the initial gain setting has a highest value.4. The graphical barcode reader of claim 2 , ...

CARD COUNTING SYSTEMS AND METHODS FOR SAME

A sensor system for counting cards includes an optical sensor assembly configured to detect edges of cards in a card stack. The optical sensor assembly includes at least an optical sensor, and a light element coupled with the optical sensor. The light element is configured to reflect light from a card stack toward the optical sensor. A remote light element is spaced from the optical sensor assembly. The remote light element is configured to direct light toward the card stack. 1. A sensor system for counting cards comprising: an optical sensor, and', 'a light element coupled with the optical sensor, the light element configured to reflect light from a card stack toward the optical sensor;, 'an optical sensor assembly configured to detect edges of cards in a card stacka remote light element spaced from the optical sensor assembly, the remote light element configured to direct light toward the card stack; andwherein one or more of the optical sensor or the remote light element are configured to isolate the optical sensor from uninterrupted light from the remote light element.2. The sensor system of claim 1 , wherein each of the optical sensor claim 1 , the light element and the remote light element are oriented orthogonally to faces of the cards in the card stack.3. The sensor system of claim 1 , wherein the optical sensor is a contact optical sensor configured for contact or placement immediately adjacent to the card stack to detect edges of cards of the card stack.4. The sensor system of comprising a controller in communication with each of the optical sensor assembly and the remote light element.5. The sensor system of claim 4 , wherein the controller includes:an initialization module configured to operate the remote light element, anda translucency comparator configured to compare a light line along the edges of the cards detected by the optical sensor with a translucency threshold.6. The sensor system of claim 4 , wherein the controller includes:a light line ...

Portable scanner with improved user feedback

An accuracy-enhanced scanner provides (in response to a first user input) illumination of potential scan targets and scans (in response to a second user input) a selected scan target. The user uses the illumination to aim the scanner at the selected scan target in between providing the first and the second user inputs. The scanner has switches to communicate the user inputs, to specify an operating mode for the scanner, and/or to communicate information codes to a computing device. The scanner has one or more scan engines (such as a barcode reader or an RFID tag reader), and optionally communicates wirelessly with the computing device. A scanning system including the scanner optionally provides feedback to the user based on feedback from a host processor. The scanner is any of a Multi-Mode Ring Scanner (MMRS), a cordless hand scanner, or a Personal Digital Assistant (PDA) with an add-on scanner.

Pual rage laser scanning apparatus and its method

내용 없음.

Display reading method, scanner for reading display, and scanning structure of scanner

Electro-optical reader with electronic stylus

A portable instrument includes a stylus for contacting a digitizer tablet or a computer touch screen to generate positional input data, as well as a bar code scanner for electro-optically reading bar code symbols. Data indicative of the symbols is downloaded to a remote host.

Slim scan module with dual detectors

An optical scanning system for scanning indicia having portions of differing light reflectivity has a light emitter assembly, with a single light source, for emitting a beam of light to scan across the indicia. A first optical detector receives light reflected back from a first portion of the indicia. A second optical detector receives light reflected back from a second portion of the indicia. Each of the optical detectors includes a photodetector, a lens and an aperture which is disposed between the photodetector and lens.

Use passive and actively measurement generation scene three-dimensional map

提出一种获取三维(3D)地图用于生成3D地图的方法和设备。该方法包括分析由无源传感器获取的至少一幅图像，以识别在至少一幅图像中的多个对象；对多个对象进行分类；基于分类，确定是否被动测量到多个对象中的每一个的距离；基于确定，被动测量到多个对象中的至少一个的距离；主动测量到多个对象中的一些对象的距离，其中当到对象中的一些对象的一个对象的距离不能被动测量时，主动测量到该对象的距离；以及基于测量到多个对象中的每一个的距离生成场景的3D地图。

Multi-level, hierarchical radio-frequency communication system

Portable measuring devices which communicate by low power transceivers through a communication controller with a printer device collect weight and size data on articles to be shipped. The collected weight and size data are combined with origin and destination data, and labels are printed bearing pertinent shipping and routing information in machine readable format. The labels are attached to the articles to be shipped and accompany the articles to their respective destinations. At transfer points the labels are read by scanner devices which also communicate by low power transceiver links with the communication controller. The wireless linking of the scanner devices promotes human safety by the absence of cords which could cause entanglement of an operator in mechanized conveying equipment. The communication controllers at each stage of the shipping process have the capability of transferring received and updated status information on the shipped articles to a central data station.

Multilevel data communication system including local and host systems

A computerized system for managing freight or the like which is picked up at various points and delivered to other various destinations, and more particularly to such a system which utilizes hand-held terminals, scanners and printers which are linked together by a micro link radio to each other and by a wide area network radio link to a main area station which can receive and transmit information to a plurality of sets of terminals, printers and the like for managing an overall freight system.

Optical reader having a plurality of imaging modules

The invention in one embodiment is an optical reader having a plurality of imaging modules. In one method for operating a multiple imaging module reader of the invention, a second frame of image data captured via actuation of a second imaging module is automatically captured and subjected to decoding in the case an attempt to decode using a frame of image data captured via actuation of a first imaging module fails. In another embodiment, a frame of image data captured via actuation of an image sensor of a first module and actuation of illumination of a second imaging module is subjected to decoding. In another embodiment, frames of image data captured via actuation of image sensors of spaced apart modules are combined. The various modules of a multiple imaging module reader can be adapted to have different best focus positions so that a field depth of the reader is improved.

Long range optical reader

An optical reader in one embodiment can include a substrate defining an opening and solder pads coupled to the substrate proximate the opening. A laser diode including first, second, and third electrical leads can also be coupled to the substrate. First, second and third solder pads can be provided on the substrate and the first, second, and third electrical leads of the laser diode can be coupled to the first, second, and third solder pads. An optical reader in another embodiment can include a substrate having a first surface and a second surface. A laser diode assembly configured to emit a laser beam can be coupled to the first surface and an illumination assembly that can include light emitting diodes can be coupled to the second surface.

Optical reader having a plurality of imaging modules

The invention is an optical reader having a plurality of image sensors. Each image sensor of a plural image sensor optical reader can be disposed on an imaging module that can include a light source. In one embodiment, a frame of image data captured via actuation of an image sensor of a first imaging module and actuation of illumination of a second imaging module is subjected to decoding. The various modules of a multiple imaging module reader can be adapted to have different best focus positions so that a field depth of the reader is improved.

Hand-held optically readable information set reader with operation over a range of distances

A hand-held optically readable information set reader includes a user supported information set reader for reading information sets at distances from the reader within a certain operative range. The reader includes a plurality of optically readable information set sensors that generate an output signal according to an image of an information set incident thereon. The information set image is captured and sent to a processor, and at least a portion of the output signal generated by information set sensors is stored in memory during a reading operation wherein a first portion of the output signal is assembled with a second portion of the output signal such that the information set is thereby read.

Data symbol reader

A data symbol reader includes a reading head which is positionable on a data symbol to be read, in which the reading head is provided with an opening for surrounding the data symbol when the reading head is positioned on the data symbol. At least one light emitter is provided for emitting light toward the opening to illuminate the data symbol and an image pick-up device is provided on which an image of the data symbol illuminated by the at least one light emitter is to be formed. A window through which the data symbol can be seen is provided and a light-splitting optical system is positioned between the opening and the window for splitting light incident on the light-splitting optical system which has passed through the opening into two beams. One of the two beams of light is received by the image pick-up device and that the other of the two beams of light is directed to the window, wherein the one of the two beams of light includes at least a part of the light emitted by the at least one light emitter.

Hand-held compact ergonomic laser scanner with integrated scanner activation or data transmission switch in scanner housing

An ergonomic single-line compact laser bar code scanning system having a compact housing for hand-held disposition at a counter. The scanning system is automatically-activated and includes a bar code symbol reading mechanism contained within a hand-supportable housing having a manually-activatable data transmission switch formed integrally in the housing. During symbol reading operations, the bar code symbol reading mechanism automatically generates a visible laser scanning pattern for repeatedly reading one or more bar code symbols on an object during a bar code symbol reading cycle, and automatically generating a new symbol character data string in response to each bar code symbol read thereby. During system operation, the user visually aligns the visible laser scanning pattern with a particular bar code symbol on an object (e.g., product, bar code menu, etc.) so that the bar code symbol is detected, scanned, and decoded. The user depresses the data transmission switch to produce a data transmission control activation signal and enabling a currently or subsequently produced symbol character data string to be automatically selected and transmitted to a host system.

Vehicle data system

A vehicle for transport, fork lift or delivery route operations, for example, includes on-board peripherals which are coupled through a Local Area Network (LAN) into a data system. A LAN data bus provides selective access to the peripherals or data devlces such as, for example, a large area display, a keyboard, a prlnter and a data terminal. The data system controls or provides data on tasks executed by or in connection with the operation of the vehicle. To increase the versatility of the vehicle, the data terminal, multiple data terminals, or any of the other data devices may be removably coupled to the LAN to be operable externally of the vehicle. A mobile mount adapter provides a secure electrical connection of a respective data terminal to the LAN to removably incorporate the data terminal into the data system. The data terminal includes base contact areas which are contacted by spring contacts of the adapter. An "open face" of a disclosed adapter allows a cable for a scanner or other data link to extend from adjacent the base contact areas without a need to remove the extending cable, thereby enabling a cable-connected scanner to be moved and used while the data terminal is disposed in the adapter.

Compact bar code scanning arrangement

Several different embodiments are disclosed of a simple, compact or miniature bar code scanner which is capable of scanning in any one of several modes. In a preferred embodiment, the compact bar code scanner is used in a small housing mounted on an index finger of an operator such that the natural pointing direction of the index finger aims the scanner. In one embodiment, a high frequency flexural member, with a scanning mirror and permanent magnet mounted thereon, is supported by a low frequency flexural member. An x drive coil is positioned by the permanent magnet, and with an applied high frequency x drive signal, causes the high frequency flexural member, with the permanent magnet means and scanning mirror mounted thereon, to torsionally oscillate at the frequency of the x drive signal. A y drive coil is also positioned by the permanent magnet, and with an applied low freduency y drive signal, causes the low frequency flexural member to oscillate to cause low frequency y scanning of the scanning mirror, thereby resulting in a raster scan pattern. With an applied high frequency y drive signal, the y coil causes the high frequency flexural member to oscillate at a high frequency to cause high frequency y scanning of the mirror, thereby resulting in an omnidirectional scan pattern. In several disclosed embodiments, the present invention provides a mirrorless beam scanning unit mounted in a finger size ring wherein a light emitter such as a visible light diode is moved back and forth.

Automatic laser projection scanner with improved laser beam scanning efficiency

Disclosed is an automatic projection laser scanning system for reading bar code symbols. The system supportable on or above a countertop surface, and includes a laser scanning device having a compact housing from which it automatically produces an object detection field of volumetric expanse for automatic detection of objects, and a scan field including at least one scanning plane for automatic laser scanning of the code symbols on detected objects. Both the object detection field and the scan field spatially arranged with respect to each other and the compact housing to facilitate easy scanning of a bar code symbol presented within the scan field after the associated object has been detected within the object detection field, thereby improving the scanning efficiency of the system.

Bar code scan and reader

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Finger-mounted electro-optical scanner with on-board short range radio transmitter

Several different embodiments are disclosed of a simple, compact bar code scanner which is capable of scanning in any one of several modes, a linear scan mode for scans along a single axis, an omnidirectional scan mode for scans with consecutive scan lines which are angularly displaced relative to each other, or a raster scan mode for scans with consecutive scan lines along a first scan axis which are displaced relative to each other along a second perpendicular axis. In a preferred embodiment, the compact bar code scanner is used in a small housing mounted on an index finger of an operator such that the natural pointing direction of the index finger aims the scanner.

Holographic laser scanning system having multiple laser scanning stations for producing a 3-D scanning volume substantially free of spatially and temporally coincident scanning planes

A holographic laser scanner of ultra-compact design capable of reading bar and other types of graphical indicia within a large scanning volume using holographic optical elements and visible laser diodes. The holographic optical elements are arranged on the scanning disc in such a manner so that none of the laser scanning planes generated within the 3-D scanning volume of the system are spatially and temporally coincident with any other laser scanning plane within the 3-D scanning volume. This novel feature of the present invention ensures that there is substantially zero cross-talk at the plurality of photodetectors provided within the system, significantly improving the performance of the system.

Scanning arrangements

ABSTRACT OF THE DISCLOSURE High speed scanning arrangements in scanners for reading bar code symbols by oscillating a scanner component in single or multi-axis scan patterns.

Method and apparatus for automatically reading bar code symbols

The invention is a method and apparatus for automatically reading bar code symbols. One aspect of the present invention concerns a method of reading bar code symbols using an automatic hand-holdable bar code symbol reading device. In general, the automatic bar code symbol reading device comprises a hand-holdable housing containing operative elements which provide an object detection field and a scan field each defined external to the housing. The method involves automatically detecting the presence of an object within the object detection field by sensing object sensing energy reflected off the object. In a preferred embodiment, the object sensing energy is IR radiation produced from an object sensing energy source disposed within the housing. In automatic response to the detection of the object within the object detection field, the hand-holdable device detects the presence of a bar code within the scan field using a laser beam produced within the housing. Then, in automatic response to the detection of a bar code in the scan field, the automatic hand-holdable bar code symbol reading device reads the detected bar code in the scan field by producing scan data signals from the detected bar code and thereafter collecting and analyzing the same. Another aspect of the present invention concerns a hand-holdable data collection device adapted for use with the automatic bar code symbol reading device to form a portable symbol reading system characterized by versatility and simplicity of use.

Method for optimizing auto-exposure performance of an imaging device

An imaging device includes an illumina-tion element; an auto-exposure element; and a processor disabling the auto-exposure element and subsequently dis-abling the illumination element.

Handheld data entry terminal having dual trigger switches

Automated holographic-based tunnel-type laser scanning system for omni-directional scanning of bar code symbols on package surfaces facing any direction or orientation within a three-dimensional scanning volume disposed above a conveyor belt

A fully automated package identification and measuring system, in which an omni-directional laser scanning system are used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.

Two-dimensional bar code scanner interface

An interface between a two-dimensional bar code scanner and a host digital decoder is provided through a 15-pin electronic connector, which transfers to the decoder an actuating signal either from a scanner trigger switch or from an external device. In response, the digital decoder provides the scanner with operating power. The scanner generates and relays a bar code signal and a scanning direction signal back to the digital decoder, which uses these signals to identify a bar code being scanned as a one-dimensional or two-dimensional code. If the bar code is determined to be a two-dimensional code, upon detection of laser pattern alignment with the label the digital decoder sends a scanning control signal to the scanner to control a laser pattern generated by the scanner.

Mirrorless scanners with movable laser, optical and sensor components

In bar code symbol scanning systems employing laser, optical and sensor components, a mirrorless scanner arrangement mounts one or more of these components on a drive for repetitive reciprocating movement either about an axis or in a plane to effect scanning.

Data capture system with communicating and recharging docking apparatus and hand-held data terminal means cooperable therewith

In an exemplary embodiment, a hand-held data terminal has external electrical contact pads which mate with resilient contacts of a docking receptacle for the interchange of data and the supply of charging current to the terminal. The terminal may be loaded into and removed from the docking receptacle in a single motion with one hand. Keyboard and display of the terminal are fully accessible while in the docking receptacle. The terminal may be fully sealed and be completely free of the conventional pin and socket type electrical connector fittings at its exterior. Electrostatic discharge protection is provided by circuit components connected to the surface contact pads so that the sensitive electronic circuitry of the terminal is protected from electrostatic discharge transients.

Compact bar code scanning arrangement

Several different embodiments are disclosed of a simple, compact or miniature bar code scanner which is capable of scanning in any one of several modes. In a preferred embodiment, the compact bar code scanner is used in a small housing mounted on an index finger of an operator such that the natural pointing direction of the index finger aims the scanner. In one embodiment, a high frequency flexural member, with a scanning mirror and permanent magnet mounted thereon, is supported by a low frequency flexural member. An x drive coil is positioned by the permanent magnet, and with an applied high frequency x drive signal, causes the high frequency flexural member, with the permanent magnet means and scanning mirror mounted thereon, to torsionally oscillate at the frequency of the x drive signal. A y drive coil is also positioned by the permanent magnet, and with an applied low freduency y drive signal, causes the low frequency flexural member to oscillate to cause low frequency y scanning of the scanning mirror, thereby resulting in a raster scan pattern. With an applied high frequency y drive signal, the y coil causes the high frequency flexural member to oscillate at a high frequency to cause high frequency y scanning of the mirror, thereby resulting in an omnidirectional scan pattern. In several disclosed embodiments, the present invention provides a mirrorless beam scanning unit mounted in a finger size ring wherein a light emitter such as a visible light diode is moved back and forth.

Portable optical scanning and pointing systems

A wrist-mounted optical scanner comprises a body portion (900) which is secured to the user's wrist by a strap (902), in the manner of a wrist watch. The body portion has a display (904), a miniature microphone (906), a photodetector (908), a transmitter unit (917) and a plurality of function keys (910). Beneath or within the body portion (900) there is stored a key pad (912) which can be slid in and out in the direction of the arrow (914) for access to the keys (916). The keys may be actuated by means of a pen or stylus (918).

Automatic triggering in MEMS-based electro-optical reader and method

A housing for supporting a scan engine having an oscillatable microelectromechanical systems (MEMS) scan component is supported by an operator in a hand-held mode of operation, and is supported by a support in a hands-free mode of operation. A control detects when the housing is supported by the support, and automatically actuates the scan engine upon such detection.

Power saving scanning arrangement

Electrical power consumption is saved in a low-cost scanner for reading bar code symbols by oscil-lating one of the scanner components either by mechanical power alone or by a low-power electrical drive.

Polygon-based bioptical pos scanning system employing dual independent optics platforms disposed beneath horizontal and vertical scanning windows

A bioptical laser scanning system employing a plurality of laser scanning stations about a two independently controlled rotating polygonal mirrors. The system has an ultra-compact construction, ideally suited for space-constrained retail scanning environments, and generates a 3-D omnidirectional laser scanning pattern between the bottom and side-scanning windows during system operation. The laser scanning pattern of the present invention comprises a complex of quasi-orthogonal laser scanning planes, including a plurality of substantially-vertical laser scanning planes for reading bar code symbols having bar code elements (i.e. ladder type bar code symbols) that are oriented substantially horizontal with respect to the bottom-scanning window, and a plurality of substantially-horizontal laser scanning planes for reading bar code symbols having bar code elements (i.e. picket-fence type bar code symbols) that are oriented substantially vertical with respect to the bottom-scanning window.

Hand-held optically readable character set reader having automatic focus control for operation over a range of distances

A hand-held optically readable information set reader having one or more photosensor arrays, at least one information set illuminator, and an information set image transfer system for projecting a readable image of an information set onto the one or more photosensor arrays.

Automatically-activated hand-supportable 2-D bar code symbol reading system employing a linear laser scanning pattern generator, an automatic bar code symbol data detector, audible data capture feedback generator, and a manually-activated data transmission activation switch

Disclosed is an automatically-activated wireless code symbol reading system comprising a bar code symbol reading mechanism contained within a hand-supportable housing having a manually-activatable data transmission switch. During symbol reading operations, the bar code symbol reading mechanism automatically generates a visible laser scanning pattern for repeatedly reading one or more bar code symbols on an object during a bar code symbol reading cycle, and automatically generating a new symbol character data string in response to each bar code symbol read thereby. During system operation, the user visually aligns the visible laser scanning pattern with a particular bar code symbol on an object (e.g. product, bar code menu, etc.) so that the bar code symbol is scanned, detected and decoded in a cyclical manner. Each time the scanned bar code symbol is successfully read during a bar code symbol reading cycle, a new bar code symbol character string is produced, while an indicator light on the hand-supportable housing is actively driven. During the bar code symbol reading cycle, the user actuates the data transmission switch producing a data transmission control activation signal and enabling a currently or subsequently produced symbol character data string to be automatically selected and transmitted to the host system. By virtue of the present invention, automatically-activated hand-supportable bar code symbol readers are now able to accurately read, in an unprecedented manner, bar code symbols on bar code menus, consumer products positioned in crowded point-of-sale environments, and other objects requiring automatic identification and/or information access.

Method and apparatus for reading two-dimensional bar code symbols with an elongated laser line

A plurality of the areas of different light reflectivity of a bar code symbol, or the like, are simultaneously illuminated, using, e.g., a beam of laser light that has an elongated cross-section. The laser light beam is swept over the symbol in a direction transverse to the elongated dimension of the illuminated region so that a two-dimensional area of the symbol is illuminated over time, until the symbol is read. The light that reflects from the illuminated region of the symbol is imaged on a linear sensor array, which is then scanned or read out to produce signals representative of spatial intensity variations of the imaged light along a linear path in the field of view.

Mirrorless scanners with movable laser, optical and sensor components

In bar code symbol scanning systems employ-ing laser, optical and sensor components, a mirrorless scanner arrangement mounts one or more of these compon-ents an a drive for repetitively reciprocating movement either about an axis or in a plane to effect scanning. All of the components are mounted, together in a common assembly to constitute a compact, lightweight scan module which is mounted in an interchangeable, modular manner in housings of different configurations.

Omni-directional tunnel-type laser scanning system for scanning bar code symbols on object surfaces facing any direction within a three-dimensional scanning volume disposed above a conveyor belt

A fully automated package identification and measuring system, in which an omni-directional laser scanning systems are used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.

Scanning device that captures image information

(57)【要約】 光源（８）、光ガイド（２）、レンズ（４）、受光器（５）、及びＡ／Ｄ変換器（７）からなる光学ユニットを含む画像を取り込む走査装置であって、この装置は光学的に透明な平行平板（好ましくは光学品質のガラス製）として形成された光ガイドをその特徴とし、この平行平板の一端部（１０）は平行平板に対し、典型的には４５°から４９°の角度で傾斜している。光源（８）は上記平行平板の傾斜端部（１０）の下側に位置する一方、この傾斜端部に対向する平行平板の他の端部（１１）は平行平面とは直交して、画像キャリヤに対面するように設けられる。

Multi-dimensional scanning arrangement with U-shaped planar spring

High speed scanning arrangements in scanners for reading bar code symbols by oscillating a scanner component in single or multi-axis scan patterns.

An apparatus for equalizing the signal strengths of different scan lines

The invention relates to an apparatus for equalizing the signal strengths of different scan lines which employs an attenuating mirror (32). The attenuating mirror (32) attenuates a laser beam and reflected light from an article at an attenuation which is different from the attenuation of another pattern mirror (34) so that reflected light from the one and the other pattern mirror (32,34) have intensities which are substantially equal, within a predetermined range of intensities having a low end equal to a signal-to-noise threshold and a high end equal to a saturation level.

Message code reads system, message code reading device and message code and forms medium

本发明涉及一种信息代码读取系统、信息代码读取装置及信息代码形成介质。通常时，难以识别信息代码，另一方面，在使用特别的读取装置进行读取的情况下，能够可靠读取。在信息代码读取系统(1)中，附加于信息代码形成介质(10)的信息代码(C)的亮色模块区域为反转区域，暗色模块区域为非反转区域。另一方面，在信息代码读取装置(40)中，设置能够对信息代码形成介质(10)照射第2波长带的照明光的第2照明光源(44)，在对信息代码形成介质(10)照射第2波长带的照明光的状态下，摄像该信息代码形成介质(10)。之后，通过在该摄像的信息代码形成介质(10)的图像中区别检测反转区域与非反转区域，提取亮色模块及暗色模块的区域，并根据该提取结果解读信息代码(C)。

Method of and apparatus for processing analog scan data signals derived by scanning bar code symbols using a laser beam, wherein a real-time bar code element detector is used to control the detection of zero-crossings occurring in the second derivative of said analog scan data signals

A scan data signal processor is disclosed for use with a laser scanning system having a plurality of different focal zones within which a laser scanning beam is scanned across one or more bar code symbols and an analog scan data signal is automatically produced. The scan data signal processor comprises a first and second derivative signal generation stages, a second-derivative zero-crossing detector, a real-time bar code element detector, and a control logic circuitry. The first derivative signal generation stage derives a first derivative signal from the analog scan data signal. The second derivative signal generation stage derives a second derivative signal from the first derivative signal. The second-derivative zero-crossing detector detects zero crossings in said second derivative signal. The real-time bar code element detector automatically detects the presence and absence of bar code element data encoded within said analog scan data signal. The control logic circuitry automatically activates the second-derivative zero-crossing detector in response to the detection of the presence of bar code element data encoded within said analog scan data signal, and automatically deactivates the second-derivative zero-crossing detector, in response to the detection of the absence of bar code element data encoded within the analog scan data signal. By virtue of the present invention, it is now possible to enable the detection of zero-crossings occurring in the second derivative of the analog scan data signals only when bar code element data has been detected, indicative that a bar code symbol has been scanned. This results in more accurate generation of digital output signals from the scan data signal processor.

Beam shaping for optical scanners

An optical scanner such as a bar code scanner includes a laser diode to create the scanning laser beam. Laser diodes are characteristically astigmatic, and when passed through a rotationally symmetric lens the beam typically forms a waist both in the x (scanning) direction and in the y (perpendicular) direction. The width of the beam envelope in the x direction is adjusted by means of a conventional lens. The width of the beam envelope in the y direction is adjusted by the use of a non-planar mirror, preferably a cylindrical mirror, as the rotating or oscillating element.

Optical reader having a plurality of imaging modules

The invention is an optical reader (5) having a plurality of imaging modules (10a, 10b). In one method for operating a multiple imaging module reader of the invention, a second frame of image data captured via actuation of a second imaging module is automatically captured and subjected to decoding in the case an attempt to decode using a frame of image data captured via actuation of a first imaging module fails. In another embodiment, a frame of image data captured via actuation of an image sensor of a first module and actuation of illumination of a second imaging module is subjected to decoding. In another embodiment, frames of image data captured via actuation of image sensors of spaced apart modules are combined. The various modules of a multiple imaging module reader can be adapted to have different best focus positions so that a field depth of the reader is improved.

Bar code reader for reading both one dimensional and two dimensional symbologies with programmable resolution

A plurality of the areas of differing light reflectivity of a bar code symbol (34) or the like are simultaneously illuminated using, for example, a beam of laser light (22) that has an elongate cross-section. The light beam (22) is swept over the symbol to be read in a direction transverse to the elongated dimension of the illuminated region (78) so that a two-dimensional area (42) of the symbol is illuminated over time. The reflected light is sensed by a 1D CCD array (50). A microprocessor (52) within the scanner provides visual feedback to aid a user in aligning the device, and also provides for a selectable aspect ratio for the image, a selectable image resolution and size, a selectable aspect ratio of the illumination, and a selectable pixel size. All of these options may be programmed within the microprocessor (52), enabling the device to read a large variety of two-dimensional symbols.

Slim-Scan Module with Interchangeable X-Y Scan Element

An optical scanning module has a metal base, a first circuit board mounted across one end of the metal base and a second circuit board mounted orthogonal to the first circuit board. The metal base supports a light emitter for producing a scanning beam and serves as a heat sink for the emitter. A flexible support attached to the metal base supports a mirror for oscillating motion. The module includes a drive mechanism, typically in the form of a permanent magnet and electromagnet, for producing reciprocal motion of the mirror. A detector included in the module senses light reflected from an indicia scanned by the beam. A flexible electrical cable connects the circuitry on the first and second circuit boards so that circuitry operates together to produce all signals necessary for operation of the scanner module and to process the electrical signals from the detector. Preferred embodiments include a flexible support consisting of a planar spring located between the mirror and one of the magnets. The components of the module are dimensioned so that the weight of the magnet balances that of the mirror. The invention also encompasses systems for scanning the beam simultaneously in two orthogonal directions at two different frequencies. This bi-directional scanning can produce a raster scan pattern for reading two-dimensional bar codes, or this scanning can produce a moving zig-zag pattern for reading truncated bar codes.

Automatically-activated hand-supportable laser scanning bar code reading system having data-transmission activation switch

An automatically-activated code symbol reading system (1) comprising a bar code symbol reading mechanism (4) contained within a hand-supportable housing having a manually-activatable data transmission switch (7A). During symbol reading operations, the bar code symbol reading mechanism (4) automatically generates a visible laser scanning pattern (10) for repeatedly reading one or more bar code symbols on an object during a bar code symbol reading cycle, and automatically generating a new symbol character data string in response to each bar code symbol read thereby. During system operation, the user visually aligns the visible laser scanning pattern (3, 10) with a particular bar code symbol on an object (e.g., product, bar code menu, etc.) so that the bar code symbol is scanned, detected and decoded in a cyclical manner. During the bar code symbol reading cycle, the user actuates the data transmission switch (7A) producing a data transmission control activation signal and enabling a currently or subsequently produced symbol character data string to be automatically selected and transmitted to the host system (5).

Bar code reader with multiple sensitivity modes using variable thresholding comparisons

A multiple sensitivity-mode digitizer circuit for a bar code reader has circuits that perform two thresholding techniques. The bar code reader includes a first derivative circuit for receiving an analog signal from a scan of the bar code symbol and for generating a first derivative signal of the analog signal. The digitizer circuit includes a first thresholding circuit for generating a first digitized signal in response to a comparison between the first derivative signal and a first threshold representing a first detection sensitivity. A second thresholding circuit generates a second digitized signal in response to a comparison between the first derivative signal and a second threshold representing a second detection sensitivity. A mode selector selects as the output digitized signal one of the first digitized signal and a third digitized signal, the third digitized signal representing the first digitized signal modified by the second digitized signal.

scanning

Method and apparatus for reading and focusing a bar code and data collection and communications module

Method and apparatus for reading and focusing a bar code using a photosensitive array (112B) and determining the rate of intensity change with respect to time and focusing the image according to the output of the photosensitive array. A data collection module (48) comprising a bar code reader and a radio transceiver is also disclosed.

Laser scanner for controlling the optical scanning of bar codes

A scanner determines whether a target is a bar code symbol and, if so, whether that symbol is one-dimensional or two-dimensional. For two-dimensional symbols, the scanner aligns a scanning pattern with the symbol and expands the scanning pattern to reach only to the top and bottom edges of the symbol, not beyond. The scanner also has a microprocessor-control scanning engine that uses a coil to drive a scanning element and pick up feed back signals from the scanning element. A pulse-width-modulated regulator also provides fast and efficient operation for driving the coil. The scanning engine can also be designed to generate a pattern that precesses across the target, and a powerful interface to the scanning engine allows decoding and control logic to work efficiently with and independently of the scan engine.

Automatically-activated hand-supportable omni-directional laser scanning bar code symbol reader having a user-selectable linear scanning menu-reading mode supported by a stroboscopically-pulsed omni-directional laser scanning pattern for improved bar code symbol navigation and alignment during menu-reading operations

A multi-mode laser-based bar code symbol reading device having a hand-supportable housing with a light transmission aperture, wherethrough visible light can exit and enter the hand-supportable housing. A laser scanning engine, disposed within the hand-supportable housing, is controlled to selectively operate in either an omni-directional reading mode or a uni-directional bar code reading mode. In the omni-directional bar code reading mode, the laser scanning engine projects pattern through the light transmission aperture, an omni-directional laser scanning pattern producing multiple laser scanning lines with substantially uniform spatial and temporal intensity characteristics at any given scanning plane parallel to the light transmission aperture within the working distance of the system, and detects and decodes bar code symbols on objects passing through the omni-directional scanning pattern, and produces symbol character data representative of decoded bar code symbols. In the uni-directional bar code reading mode, the laser scanning engine projects through the light transmission aperture, a visible stroboscopically-pulsed omni-directional laser scanning pattern, against a single laser scanning line having substantially uniform spatial and temporal intensity characteristics at any given scanning plane parallel to the light transmission aperture within the working distance of the system, and detects and decodes bar code symbols on objects passing through the single laser scanning line, and produces symbol character data representative of decoded bar code symbols. A manually-actuatable data transmission switch, integrated with said hand-supportable housing, produces an activation signal in response to the manual-actuation of the data transmission switch. A data transmission subsystem, disposed in the hand-supportable housing, operates under control of control circuitry to communicate the symbol character data produced by the laser scanning engine to a host device ...

Mirror-free scanner with movable laser source and movable, optical components

Terminal with slim scan module with generally orthogonal circuit board arrangement

A compact scan module is mounted within a hand-held terminal, and includes two printed circuit boards orthogonal to each other. The circuit boards carry interconnected electrical circuits which drive individual electrical components within the module. Scanning is initiated by an initiator on the terminal. A keyboard and a display are mounted on the terminal.

Laser generation control method for optical reader

Compact bar code scanning arrangement

Several different embodiments are disclosed of a simple, compact or miniature bar code scanner which is capable of scanning in any one of several modes. In a preferred embodiment, the compact bar code scanner is used in a small housing mounted on an index finger of an operator such that the natural pointing direction of the index finger aims the scanner. In one embodiment, a high frequency flexural member, with a scanning mirror and permanent magnet mounted thereon, is supported by a low frequency flexural member. An x drive coil is positioned by the permanent magnet, and with an applied high frequency x drive signal, causes the high frequency flexural member, with the permanent magnet means and scanning mirror mounted thereon, to torsionally oscillate at the frequency of the x drive signal. A y drive coil is also positioned by the permanent magnet, and with an applied low frequency y drive signal, causes the low frequency flexural member to oscillate to cause low frequency y scanning of the scanning mirror, thereby resulting in a raster scan pattern. With an applied high frequency y drive signal, the y coil causes the high frequency flexural member to oscillate at a high frequency to cause high frequency y scanning of the mirror, thereby resulting in an omnidirectional scan pattern. In several disclosed embodiments, the present invention provides a mirrorless beam scanning unit mounted in a finger size ring wherein a light emitter such as a visible light diode is moved back and forth.

Body wearable laser scanning system with programmed mode of automatic code symbol reading for consecutively reading bar code symbols without scanner reactivation

A portable automatic code symbol reading system having a laser scanning engine mounted upon the hand of its operator to provide hands-free automatic laser scanning capabilities. The automatic code symbol reading system includes a battery power supply aboard its hand-mounted housing, and a power-conserving control subsystem for conserving the consumption of electrical power during automatic portable laser scanning operations. The control subsystem of the present invention has a plurality of control centers which control the operation of the system components in accordance with preselected system control operations. Each of the control centers is responsive to control activation signals generated by certain of the system components upon the occurrence of predefined conditions. Certain of the control centers are capable of overriding other control centers to provide diverse control capabilities. These control capabilities facilitate execution of intelligent functions and power consumption measures required during automatic, hands-free code symbol reading operations.

Method of and system for reading visible and/or invisible code symbols in a user-transparent manner using visible/invisible illumination source switching during data capture and processing operations

A digital imaging based symbol reading system has the capacity to automatically read both visible and invisible symbols in the same application environment. Typically, the system reads the symbols in a user-transparent manner. The system may employ visible/invisible illumination switching during operation. The system may include LED illumination sources. A method for reading both visible and invisible symbols using a single device is also disclosed.

Improved integrated code reading system including tunnel scanner

本发明揭示了一种读取光学码的系统和技术，尤其是一种具有沿不同方向指向目标范围的多个成象或扫描模块的代码读取系统，它增加了在目标范围内任意指向的物体上的代码符号被读取的可能性。本发明的其他方面涉及手持式阅读器、固定装置、操作员侧栏、拱形隧道和镜面用于增加系统覆盖范围的使用和结构。本发明的其他方面涉及与售货点设备或代码读取终端相关的元件，包括组装在一起的磅秤、输入台、系统控制器和显示器。

Automatically-activated hand-supportable laser scanning bar code symbol reading system with omnidirectional and unidirectional scanning modes in addition to a data transmission activation switch

A hand-supportable bar code symbol reading device having a laser scanning engine that is controlled to selectively operate in either an omni-directional scan mode or a single line scan mode. In the single line scan mode of operation, symbol character data produced by the laser scanning engine is communicated to a host device in response to an activation signal produced by a data transmission switch. In the omni-directional scan mode, symbol character data is communicated to the host device irrespective of the activation signal. Preferably, mode selection means selectively operates the laser scanning engine in either the omni-directional scan mode of operation or the single line scan mode of operation in response to placement of the device in a support stand, thereby enabling automatic operation as a stationary hands-free omni-directional projection scanner (in stand), and automatic operation as a portable hand-held line scanner (out of stand).

Hand-held data capture system with interchangeable modules and interactive control circuits

A battery powered, portable, hand-held data terminal (10) of modular structure includes a base module (16, 136) with a keyboard (18) and a display screen (19) and their respective electrical functions (167, 164). A data and communications module may be selected from a number of different data and communications modules (48, 55, 75, 135) each having different types of data communications transceiver, or including in addition data collection devices, such as shelf label readers or bar code readers (76). The base module (16, 136) includes a microprocessor-controlled data communications and control interface having a predetermined protocol. To adapt the various type of data and communications modules for selection of any one thereof to become attached to the base module and function therewith, each of the data and communications modules includes a microprocessor (125, 144) operable to function as an emulator to interact with the microprocessor of the base module (16, 136).

Web-enabled system and method for designing and manufacturing laser scanners

An Internet enabled method and system (1) for designing, and manufacturing laser scanners of modular design and construction (231) using globally based information networks (3), such as the Internet, supporting the World Wide Web (WWW).

Optical reader having a plurality of imaging modules

The invention is an optical reader having a plurality of imaging modules. In one method for operating a multiple imaging module reader of the invention, a second frame of image data captured via actuation of a second imaging module is automatically captured and subjected to decoding in the case an attempt to decode using a frame of image data captured via actuation of a first imaging module fails. In another embodiment, a frame of image data captured via actuation of an image sensor of a first module and actuation of illumination of a second imaging module is subjected to decoding. In another embodiment, frames of image data captured via actuation of image sensors of spaced apart modules are combined. The various modules of a multiple imaging module reader can be adapted to have different best focus positions so that a field depth of the reader is improved.

Toggling activation of lasers in scanner systems

Scanners, methods, and computer storage media having computer-executable instructions embodied thereon that process variable sized objects with high package pitch on a moving conveyor belt are provided. The scanners are laser scanners that include at least two laser diodes, sensors, and field programmable gate arrays processors. The at least two laser diodes can have different focuses. Each diode generates a laser beam when excited by an activation signal and an appropriate modulation. The sensors within the laser scanner device measure light reflected from a target on the objects. The processors toggle activation among the at least two laser diodes based on measurements sensed from the light reflected from the target.

Hand-held data capture system with interchangeable modules

ABSTRACT OF THE DISCLOSURE The disclosure relates to battery powered hand-held data entry terminals wherein a peripheral module may contain an automatically operating full image reader and a wireless communication unit. The reader reads at least one full line of indicia and may comprise a laser bar code scanner or a flash type image reader. Preferably the reader has uniform resolution in orthogonal directions in the field of view so that an area image can be read at any arbitrary angular orientation and re-oriented as a stored digital image to a normalized orientation before decoding. The user interface may lie in a first longitudinally extended layer and the peripheral module may lie in a second longitudinally extended adjoining layer. In normal reading disposition of the automatic reader, the user interface may be close to its normal orientation for user interaction therewith to provide for smooth transitions between reading and user interaction operations. A hand grip portion preferably underlies the user interface for comfortable support thereof during manual actuations. The peripheral module and hand grip portion may be used entirely separately from the user interface and may have a wireless link with the user interface. The user interface may comprise a digitizer/display with resolution for accurately digitizing and displaying a person's signature. Signatures may also be digitized via an optical full image reader for immediate verification.

Method and device for reading two-dimensional knitting codes with a widened laser beam

Mirrorless scanners with movable laser, optical and sensor components

In bar code symbol scanning systems employing laser, optical and sensor components, a mirrorless scanner arrangement mounts one or more of these components on a drive for repetitive reciprocating movement either about an axis or in a plane to effect scanning.

Bioptical laser scanning system providing 360 degrees of omnidirectional bar code symbol scanning coverage at a point of sale (POS) station

A bioptical holographic laser scanning system employing a plurality of laser scanning stations about a holographic scanning disc having scanning facets with high and low elevation angle characteristics, as well as positive, negative and zero skew angle characteristics which strategically cooperate with groups of beam folding mirrors having optimized surface geometry characteristics. The system has an ultra-compact construction, ideally suited for space-constrained retail scanning environments, and generate a 3-D omnidirectional laser scanning pattern between the bottom and side scanning windows during system operation. The laser scanning pattern of the present invention comprises a complex of pairs of quasi-orthogonal laser scanning planes, each composed by a plurality of substantially-vertical laser scanning planes for reading bar code symbols having bar code elements (i.e. ladder-type bar code symbols) that are oriented substantially horizontal with respect to the bottom scanning window, and a plurality of substantially-horizontal laser scanning planes for reading bar code symbols having bar code elements (i.e. picket-fence type bar code symbols) that are oriented substantially vertical with respect to the bottom scanning window.

Optical sensor for range finding and wind sensing measurements

An optical communication device can address these and other issues by utilizing a system and method in which an optical device (110) emits a series of laser pulses that trace a spiral path over a coverage area. Each laser pulse containing a packet of information modulated at a relatively rate to help mitigate adverse effects from device movements, scintillation, and the like. The beam width of the laser, speed of the scan (along the spiral path), and number of laser pulses can be configured such that corresponding response pulses (e.g., retro-modulated pulses) received from an illuminated tag within the coverage may have a variety of different amplitudes, increasing the likelihood that at least one of the response pulses will have power characteristics that facilitate a proper decoding of the response pulse.

Unitary package identification and dimensioning system employing ladar-based scanning methods

A fully automated package identification and measuring system (300), in which an onmidirectional holographic scanning tunnel (100) is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem (500, 600) is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.

Automatically-activated wireless laser scanning 2D bar code symbol reading system capable of automatically transmitting stored symbol character data when the hand-supportable unit is operated within its RF data communication range and automatically collecting and storing symbol character data when the hand-supportable unit is operated outside of its RF data communication range

Disclosed is an automatically-activated wireless code symbol reading system comprising a bar code symbol reading mechanism contained within a hand-supportable housing having a manually-activatable data transmission switch. During symbol reading operations, the bar code symbol reading mechanism automatically generates a visible laser scanning pattern for repeatedly reading one or more bar code symbols on an object during a bar code symbol reading cycle, and automatically generating a new symbol character data string in response to each bar code symbol read thereby. During system operation, the user visually aligns the visible laser scanning pattern with a particular bar code symbol on an object (e.g. product, bar code menu, etc.) so that the bar code symbol is scanned, detected and decoded in a cyclical manner. Each time the scanned bar code symbol is successfully read during a bar code symbol reading cycle, a new bar code symbol character string is produced, while an indicator light on the hand-supportable housing is actively driven. During the bar code symbol reading cycle, the user actuates the data transmission switch producing a data transmission control activation signal and enabling a currently or subsequently produced symbol character data string to be automatically selected and transmitted to the host system. By virtue of the present invention, automatically-activated hand-supportable bar code symbol readers are now able to accurately read, in an unprecedented manner, bar code symbols on bar code menus, consumer products positioned in crowded point-of-sale environments, and other objects requiring automatic identification and/or information access.

Device for selectively reading code symbols in spatially-defined portions of the scan field

Method and apparatus for automatically reading bar code symbols is disclosed. One aspect of the present invention concerns a method of reading bar code symbols using an automatic hand-holdable bar code symbol reading device. In general, the automatic bar code symbol reading device comprises a hand-holdable housing containing operative elements which provide an object detection field and a scan field each defined external to the housing. The method involves automatically detecting the presence of an object within the object detection field by sensing object sensing energy reflected off the object. In a preferred embodiment, the object sensing energy is IR radiation produced from an object sensing energy source disposed within the housing. In automatic response to the detection of the object within the object detection field, the hand-holdable device detects the presence of a bar code within the scan field using a laser beam produced within the housing. Then, in automatic response to the detection of a bar code in the scan field, the automatic hand-holdable bar code symbol reading device reads the detected bar code in the scan field by producing scan data signals from the detected bar code and thereafter collecting and analyzing the same. Another aspect of the present invention concerns a hand-holdable data collection device adapted for use with the automatic bar code symbol reading device to form a portable symbol reading system characterized by versatility and simplicity of use.