Abstract: A reader for electro-optically reading a target in the presence of ambient light to be suppressed, includes a laser for emitting a laser beam, a scan component for scanning the laser beam across the target, a photodetector for detecting return laser light from the target to generate an information signal bearing information related to the target, and for concomitantly detecting the ambient light to generate an ambient light signal, and signal processing circuitry for measuring the ambient light signal, for processing both the information signal and the ambient light signal in one mode of operation when the measured ambient light signal is below a threshold, and for suppressing the ambient light signal and for processing only the information signal in another mode of operation when the measured ambient light signal at least equals the threshold.

Abstract: A transparent force sensor for use in touch panel displays (touch screens) and method for fabricating the same are disclosed. The transparent force sensor is capable of detecting touch by measuring local pressure applied by a touch input to a display area of the touch screen.

Abstract: Indicia are imaged at a workstation having windows arranged in intersecting planes. The workstation also has solid-state imagers with fields of view that are split into intersecting subfields that look out through the windows, as well as illumination assemblies each having multiple light sources that illuminate each subfield with illumination light over an illumination field that overlaps a respective subfield. Light-modifying elements, such as lenses or baffles that are radially offset from the multiple light sources, condition the illumination light from the multiple light sources to be generally uniform in light intensity over at least one illuminated subfield.

Abstract: A checkout system includes a workstation having a data capture arrangement for capturing through a horizontal window a target associated with a product to identify the product being checked out at the workstation, and a scale for weighing the product at the workstation. The scale has a scale mechanism, and a weighing platter on which the product is placed for weighing. The weighing platter is integrated with the horizontal window and overlies the scale mechanism. The weighing platter projects past the scale mechanism and has a front end that overhangs the scale mechanism. Non-threaded, interlocking connectors, which are provided on the weighing platter and the scale mechanism, prevent the weighing platter from tipping if a force is exerted on the front end of the weighing platter. The weighing platter is mounted on, and removed from, the scale mechanism without the aid of tools.

Abstract: An extendable and reconfigurable antenna apparatus includes at least one conductive monopole antenna element. An extended antenna element is provided including a junction. A conductive tube is mechanically coupled to the extended antenna element by an insulating coupler to form an assembly. Placement of the assembly over the monopole antenna element converts the monopole antenna element into a center conductor of a coaxial transmission line electrically coupled to the extended antenna element at the junction.

Abstract: An apparatus and method for improved locationing system performance in non-line of sight conditions of a mobile device within an environment includes providing a model of the environment that maps transmitters within and objects that obstruct signals from the transmitters, including mapped areas where the signal from a nearby transmitter is obstructed. A location of a device moving within the environment is tracked using the signals. When it is determined that the device is moving into a mapped area having an obstructed signal from a nearby transmitter, a locationing system parameter is modified for that obstructed signal so that the mobile communication device can be located using at least the modified signal parameter.

Abstract: An electronic device includes a display device that is at least semi-transparent. The electronic device includes a housing with a first coupling component, a data acquisition device configured to capture first data within a first field of view (FOV), and the display device. The display device includes a viewable portion that is semi-transparent and configured to display second data. The display device includes a second coupling component disposed at least partially on the viewable portion and coupling with the first coupling component to couple the display device to the housing. When the first and second coupling components are coupled, the display device is positioned in such a manner that a second FOV viewed through the viewable portion is viewable by a user. The first FOV of the data acquisition device is within at least a portion of the second FOV of the viewable portion.

Abstract: An imaging system for electro-optically reading a symbol located within a range of working distances from the system, utilizes a solid-state imager for capturing return light from the symbol and for generating an electrical signal indicative of the captured return light, and a controller for decoding the electrical signal into data indicative of the symbol A memory stores a known set of values for a plurality of optical characteristics of the symbol, such as size and contrast characteristics of the symbol when the symbol lies in a restricted zone within the range of working distances. The controller is operative, after the symbol has been successfully decoded, for processing the size and contrast characteristics of the decoded symbol, and for determining that the decoded symbol has been successfully read within the restricted zone when each size and contrast characteristic lies within the known set of values stored by the memory.

Abstract: A method and system for an access point assisted active roam scanning includes first and second access points, a switch and a client device. The switch communicates with the first and second access points that operate in a communication network, each access point having a respective operating area. The client device, within the first operating area, includes a wireless transceiver broadcasting first and second probe requests to the first and second access points, respectively, the second probe request being broadcast without receiving a probe response to the first probe request. The first and second access points generate first and second probe responses in response to receiving the first and second probe requests. The switch receives the first and second probe responses and generates a consolidated probe response as a function of the first and second probe responses.

Abstract: A system and method for orientation of an ultrasonic signal includes at least two emitters in a mobile device that includes an orientation sensor that can determine a device orientation. A receiver at a fixed, known point includes at least two microphones operable to receive an ultrasonic signal from the device. The mobile device can drive the emitters to produce an ultrasonic signal that is oriented towards the receiver. A location engine can establish a location of the mobile device using the time delay of arrival of an ultrasonic burst from the mobile device impinging on each microphone of the receiver. In response to the location and/or the orientation, the mobile device operable to drive the emitters to produce a signal that is oriented towards the receiver.

Abstract: Defining a radio frequency identification read area includes a radio frequency identification (RFID) reader operable to read RFID tags within a specified read area. An RFID transmitter is coupled with the RFID reader and is operable to radiating a modulated carrier in an area adjacent to the specified read area. The RFID reader controls the RFID transmitter to transmit the modulated carrier during a preamble transmission of the RFID reader to prevent any RFID tags in the adjacent area from recognizing an interrogation signal from the RFID reader.

Abstract: An apparatus includes a diffusive plate that is substantially perpendicular to the optical axis of an imaging lens arrangement and covers a side face of a solid rectangular defining a volume space within which parts of a scan engine are deposited. The parts of the scan engine including at least the illumination light source, the imaging lens arrangement, an imaging sensor, and a controller for controlling both the illumination light source and the imaging sensor. The diffusive plate includes a first opening to allow light enter the imaging lens arrangement through the first opening. The area enclosed by the boundary of the diffusive plate substantially equal to the area of the side face of the solid rectangular.

Abstract: A dual frequency ultrasonic locationing system includes an emitter operable to emit two different ultrasonic frequencies simultaneously in one ultrasonic burst. A receiver with at least two microphones is operable to receive the ultrasonic burst. A correlator is operable to correlate the signals obtained from each microphone to derive a time difference of arrival of the ultrasonic burst at each microphone. The time difference of arrival of the ultrasonic signal from the emitter impinging on each microphone of the receiver is utilized to determine a location of the emitter.

Abstract: A method and apparatus for improving reception of responsive RFID signals is provided. The method includes transmitting a plurality of interrogation signals each having a different polarization to activate one or more RFID tags. Responsive signals from the RFID tags are analyzed for receive symbol quality data to select a transmit polarization subset. These polarizations are then used for transmitting further interrogation signals to the RFID tags. The apparatus includes a dual element orthogonal radiator coupled to a transmitter and receiver. A processor controls the transmitter and receiver to transmit a series of RFID interrogation signals each having a different polarization, and receive a series of responsive signals from one or more RFID tags. The responsive signals are analyzed to select a particular a transmit polarization subset that will improve reception of future responsive signals from the RFID tags.

Abstract: A system and techniques for managing power utilization in a wireless local area network are disclosed. The system can utilize an infrastructure power management module that is configured to identify and power down one or more unused wireless devices and/or dynamically reconfigure the wireless operation of one or more wireless devices to consume lower power while still operating according to network requirements.

Abstract: A method for controlling a workstation includes the following: (1) energizing a first illuminator to illuminate a first subfield of view with a first illumination pulse and subsequently energizing the first illuminator to illuminate the first subfield of view with a second illumination pulse; (2) exposing the array of photosensitive elements in the imaging sensor for a first sensor-exposure time and subsequently exposing the array of photosensitive elements in the imaging sensor for a second sensor-exposure time; and (3) processing an image captured by the imaging sensor to decode a barcode in the image. The first illumination pulse overlaps with the first sensor-exposure time for a first overlapped-pulse-duration, and the second illumination pulse overlaps with the second sensor-exposure time for a second overlapped-pulse-duration. The first overlapped-pulse-duration is different from the second overlapped-pulse-duration.

Abstract: A method and system for ultrasonic locationing using time difference of arrival measurements includes an ultrasonic receiver including three microphones each disposed on a periphery of a housing and a fourth centrally-positioned microphone.

Abstract: A checkout system includes a clerk-operated, bi-optical workstation through which products associated with targets having target data to be electro-optically captured are passed, and a customer-operated, accessory reader having an accessory window and a data capture assembly for capturing additional target data of additional targets associated with transaction-related items. The accessory reader is supported by the workstation for movement relative to the workstation to enable the customer to readily position and aim the accessory window at the additional targets.

Abstract: A method and apparatus for selectively reading radio frequency identification device (RFID) tags by an RFID reader includes the RFID reader transmitting an interrogation signal at each of a plurality of power levels beginning with a lowest power level and sequentially increasing power of the transmitted interrogation signal to a highest power level. The RFID reader receives, in response to transmitting the interrogation for at least one of the power levels, at least one data signal from each RFID tag within a read zone of the RFID reader, wherein each of the data signals contains stored data corresponding to the RFID tag responding to the transmission of the interrogation signal. The RFID reader selectively reads the stored data contained in the data signals received from the responding RFID tags.