Patent application number | Description | Published |
20090084851 | Imaging reader for and method of improving visibility of aiming pattern - An aiming light assembly supported by a mobile imaging reader projects an aiming light pattern on a symbol. A controller modulates the aiming light pattern to render the aiming light pattern more visibly discernible to an operator, especially in a brightly lit ambient environment, to enable the operator to position the aiming light pattern on the symbol prior to reading. | 04-02-2009 |
20100019041 | Arrangement for and method of guiding an operator to move an imaging reader to an optimum reading position - An operator is guided to move an imaging reader to an optimum reading position in which to read a symbol by image capture. Optimum image capture occurs substantially at an imaging plane of an imaging assembly, and the operator is visually guided so that the symbol is located substantially at the imaging plane in a working range of distances. | 01-28-2010 |
20100078481 | Imaging reader and method with enhanced aiming pattern detection - An image capture system for, and a method of, reading an optical code during a reading mode, comprise an aiming assembly including a laser for emitting a laser beam having a variable intensity, and for generating an aiming pattern from the laser beam during an aiming mode prior to the reading mode, and an imager for detecting and capturing an image of the aiming pattern and the code over a field of view by exposure over an exposure time period during the aiming mode, and for detecting and capturing an image of the code over the field of view during the reading mode. A controller is operative for controlling the intensity of the laser beam during the aiming mode by increasing the intensity of the laser beam during the exposure time period to enhance detection and capture of the aiming pattern by the imager, and by decreasing the intensity of the laser beam frame outside the exposure time period for user safety. | 04-01-2010 |
20100130266 | Device and Method for Battery Life Management Using Global or Local Positioning System - A device includes a memory, a wireless transceiver and a positioning system. The memory stores a first area in which a wireless network lacks coverage. The wireless transceiver is adapted to communicate with the wireless network. The positioning system determines a position of the device to determine whether the device is located within the first area. The wireless transceiver does not attempt to communicate with the wireless network if the positioning system determines that the device is located within the first area. | 05-27-2010 |
20100163625 | Minimizing misdecodes in electro-optical readers - An arrangement for, and a method of, minimizing misdecodes of GS1 DataBar Limited (Databar-limited) symbols in a reader for electro-optically reading symbols of different symbologies, such as Universal Product Code (UPC) Version A (UPC-A) symbols, includes a data capture assembly for capturing light from a target symbol, and for generating an electrical signal indicative of the captured light; and a controller for processing and decoding the electrical signal, and for determining whether the decoded signal is indicative of a Databar-limited symbol, and for determining whether the decoded signal has characteristics indicative of a different symbology, such as the UPC-A symbol, to indicate whether a misdecode of the Databar-limited symbol has occurred. | 07-01-2010 |
20110049242 | METHOD AND APPARATUS FOR ESTIMATING EXPOSURE TIME FOR IMAGING-BASED BARCODE SCANNERS - A method and apparatus for estimating an optimized exposure time for an imaging-based barcode scanner. The method includes (1) determining a SNR decodability function that enables a decodability value be determined from a signal-to-noise ratio; (2) determining a blur decodability function that enables a decodability value be determined from a blur value; (3) measuring a blur and a signal-to-noise ratio for an image captured with a first exposure time; and (4) determining an optimized exposure time based on the measured blur, the measured signal-to-noise ratio, and a combined decodability function that depends upon both the SNR decodability function and the blur decodability function. | 03-03-2011 |
20110073657 | METHOD AND APPARATUS FOR DETECTING A BARCODE - A method and apparatus for detecting a barcode like region contained in a target object. The method includes capturing an image of the target object, calculating a total confidence value for the captured image, and determining a presence of a barcode in the captured image based on the total confidence value, wherein the total confidence value is calculated as a function of at least one of a first, second, and third confidence values. The method of calculating the confidence values includes calculating the first confidence value based on a vertical projection signal of the barcode like region in the captured image, the second confidence value based on a horizontal projection signal of the barcode like region in the captured image, and the third confidence value based on a start and stop pattern of the barcode like region in the captured image. | 03-31-2011 |
20110101099 | METHOD AND APPARATUS FOR MONITORING AN EXIT WINDOW OF A SCANNER - A method, system, and apparatus for monitoring an exit window of a scanner using a plurality of imaging devices. The method includes capturing a first image through the exit window using a first imaging device, capturing a second image through the exit window using a second different imaging device, and detecting at least one of a plurality of features in both the first and second images. The method further includes matching the plurality of features detected in both the first and the second images, determining whether the at least one matched feature is present on the plane of the exit window, and monitoring a physical condition of the exit window based on the at least one feature. | 05-05-2011 |
20120043385 | IMAGE CAPTURE BASED ON WORKING DISTANCE RANGE RESTRICTION IN IMAGING READER - An arrangement for, and a method of, electro-optically reading a target by image capture, employ an aiming assembly for projecting an aiming light pattern on the target that is located within a range of working distances relative to a housing, an imaging assembly for capturing an image of the target and of the aiming light pattern over a field of view, and for generating an electrical signal indicative of the captured image, and a controller for determining a distance of the target relative to the housing based on a position of the aiming light pattern in the captured image, and for processing the electrical signal into information relating to the target when the target lies in a restricted zone within the range of working distances. | 02-23-2012 |
20120325909 | IMAGING READER WITH NON-UNIFORM MAGNIFICATION WITHIN A FIELD OF VIEW - An imaging lens assembly captures return light through a window of a vertical slot scanner from a target located in a range of working distances along an optical axis away from the window, and projects the captured return light onto an array of a solid-state imager. The imaging lens assembly is optically modified for non-uniform magnification within, and for increasing resolution at an outer peripheral region of, a field of view of the array, in an imaging plane generally perpendicular to the optical axis. The magnification is at least partly increased in the imaging plane with increasing radial distance away from the optical axis, to enable reading of the target when tilted relative to the optical axis and located at the outer peripheral region of the field of view. | 12-27-2012 |
20130001290 | OBJECT IDENTIFICATION USING BARCODE READER - A barcode reader for verifying a barcode is attached to an appropriate object particularly suitable for use at a point of sale. A database of expected object signatures in a vicinity of a properly affixed barcode properly is maintained. At a point of sale, the barcode reader obtains an image of a presented barcode (possibly not the correct barcode) and at least a portion of an object to which the presented barcode is affixed. Using data encoded on the presented barcode, the database is accessed to provide an expected signature of the object in the region of the presented barcode. A comparison is made between the expected signature of the object and a sensed signature derived from the image of the object. An improper barcode can thus possibly be identified and further investigation initiated. | 01-03-2013 |
20130098997 | APPARATUS FOR AND METHOD OF READING TARGETS BY IMAGE CAPTURE BY PROCESSING CAPTURED TARGET IMAGES IN A BATCH OR FREE-RUNNING MODE OF OPERATION - Targets associated with transactions to be processed at a workstation are read by capturing return light from the targets with an array of light sensors of a solid-state imager having a field of view that extends through a workstation window to the targets. A controller controls the imager to operate at a frame rate to acquire images of the targets over successive frames in either a batch mode or a free-running mode. A memory stores the acquired images. The controller processes all of the stored images, and processes at least one of the stored images over an extended time period greater than one of the frames. | 04-25-2013 |