Patent application number | Description | Published |
20090067731 | COMPENSATED VIRTUAL SCAN LINES - Disclosed are embodiments of methods, systems, and apparatus for providing virtual scan lines in an imaging system that compensate for the optical distortion associated with the system. In some embodiments, the virtual scan lines may be curved or angled according to their position in the Field of View (FOV) of the imaging system to compensate for the distortion. Some embodiments may provide for virtual scan lines that are preconfigured to compensate for a typical or pre-selected level and type of optical distortion. Other embodiments may be configured to measure or otherwise ascertain the actual distortion of the optical lens and/or other components of the system and generate a virtual scan line pattern that compensates for the measured distortion. | 03-12-2009 |
20100123005 | METHOD OF PREVENTING MULTIPLE READS WHEN SCANNING GROUPS OF OPTICAL CODES - State-of-the-art optical scanning systems feature digital imaging of multiple symbolic labels such as optical bar codes. An imaging scanner reads a label | 05-20-2010 |
20100165160 | SYSTEMS AND METHODS FOR IMAGING - A data reader preferably includes an imaging device that operates on a rolling reset basis to capture images of a moving target. Images of moving targets are preferably analyzed to determine the ambient light intensity, and a processor in the data reader preferably adjusts operation of the imager and of a light source based on the intensity of the ambient light. Other data readers may use an imager with a mechanical shutter that is designed for rapid, frequent operation. | 07-01-2010 |
20100213259 | SYSTEMS AND METHODS OF OPTICAL CODE READING USING A COLOR IMAGER - Systems and methods of optical code reading include production of image data by a color image sensor array and processing of the image data to decode an optical code. In one configuration, the color image sensor array includes first and second sets of sensor pixels sensitive to light having wavelengths within, respectively, first and second wavelength bands, reflected light is focused by an optical system to form an image of an optical code on the color image sensor array, first and second sets of image data representing light intensity levels sensed by, respectively, the first and second sets of sensor pixels are produced, and the first set of image data is processed to determine whether the second set of image data is to be used in combination with the first set of image data to decode the optical code. | 08-26-2010 |
20120000982 | ADAPTIVE DATA READER AND METHOD OF OPERATING - Disclosed systems and methods preferably capture one or more images of an item bearing an optical code and analyze such images to determine whether the item has a highly, or relatively highly, reflective surface or not. Based on such a determination, operating parameters of the system, such as the gain, exposure time, and amount of illumination, are preferably automatically adjusted by the system to capture a subsequent image of the item where the subsequent image has sufficient contrast to decode the optical code. The subsequent image may include a plurality of images, and different operating parameters may be used to capture several, or each, of the plurality of images based on the determination of whether the item has a highly, or relatively highly, reflective surface or not. | 01-05-2012 |
20120018516 | DATA READER HAVING COMPACT ARRANGEMENT - A data reader including one or more imagers or imager assemblies that capture two-dimensional images of an object disposed in a view volume, the data reader having fold minors and other component arrangement that enable compact and efficient component configuration. | 01-26-2012 |
20120067956 | SYSTEM AND METHOD FOR READING OPTICAL CODES ON REFLECTIVE SURFACES WHILE MINIMIZING FLICKER PERCEPTION OF PULSED ILLUMINATION - Methods and systems are disclosed for improved operation of readers of optical codes presented on electronic display screens or other highly reflective surfaces. Certain configurations include controlling image exposure and illumination pulse timing so as to avoid or minimize the perception of flicker of the pulsed illumination by a user or bystander while implementing methods for reading optical codes presented on electronic display screens or other highly reflective surfaces. | 03-22-2012 |
20120111944 | ADAPTIVE DATA READER AND METHOD OF OPERATING - Systems and methods for data reading are disclosed wherein one or more images of an item bearing an optical code are captured and the captured images are analyzed to determine whether the item has a reflective surface or not. Based on such a determination, operating parameters of the system, such as one or more of: the amount of time dedicated to 1D code decoding and the amount of time dedicated to 2D code decoding, the order in which 1D code and 2D code decoding are performed, termination of a decoding operation, restarting an image capture and decoding operation, and image preprocessing may be automatically adjusted by the system to decode an optical code. | 05-10-2012 |
20120181338 | SYSTEMS AND METHODS FOR ILLUMINATING A SCAN VOLUME OF AN OPTICAL CODE READER - Methods and systems of illuminating a scan volume of an optical code reader are disclosed. In an example configuration, an illumination source associated with the optical code reader is set to a first illumination mode based on a user-configurable parameter that at least partially defines a first depth of field of the optical code reader when the illumination source illuminates the scan volume; while the illumination source is in the first illumination mode, the scan volume is monitored for an indication of whether an object is detected in the scan volume; and if an object is detected in the scan volume while the illumination source is in the first illumination mode, the illumination source is set to a second illumination mode. | 07-19-2012 |
20120187194 | SYSTEMS AND METHODS FOR PROVIDING FEEDBACK TO A USER OPERATING AN AUTOMATED CHECKSTAND - Systems and methods for providing feedback to a user of an automated checkstand are disclosed. In some embodiments, the automated checkstand has a data reader including a read zone through which items to be read are passed, and a loading zone on which a user places items for conveyor transport through the read zone. The automated checkstand also has a notification system including an illumination source that is configured to selectively illuminate a portion of the automated checkstand in response to positional information associated with items previously placed on a conveyor system. | 07-26-2012 |
20130206839 | TIME DIVISION EXPOSURE OF A DATA READER - Disclosed systems and methods generate a sequence of images using a data reader having an imager exposed to multiple fields of view that are alternately illuminated to coincide with exposure periods forming an image capture rate. In one configuration, a first illumination source illuminates a first field of view of the data reader with a first series of illumination pulses at a first pulse repetition rate. The imager captures in an alternating manner a first set of images of the first field of view and a second set of images of a second field of view. The first pulse repetition rate and the image capture rate are set such that the imager captures the first set of images at approximately the same time as the first illumination source illuminates the first field of view with an illumination pulse. | 08-15-2013 |
20130292470 | SYSTEM AND METHOD FOR READING OPTICAL CODES ON BOTTOM SURFACE OF ITEMS - An automated checkout system and method of operation for reading encoded data on a bottom surface of an item using a data reader. The automated checkout system includes a leading conveyor section and a trailing conveyor section separated by a gap therebetween, where the item is transported across the gap as it moves between the conveyors. A first and second reading device are each positioned beneath the conveyor sections, where each reading device has a field of view projecting through the gap. The first reading device is configured to acquire a first set of scan data and the second reading device is configured to acquire a second set of scan data different from the first. In some embodiments, the first set of scan data may include two-dimensional area views of the encoded data, and the second set of scan data may include linescans of the encoded data. | 11-07-2013 |
20140028837 | SYSTEMS AND METHODS OF OBJECT MEASUREMENT IN AN AUTOMATED DATA READER - Systems and methods of determining object dimensions of objects passed through a read zone of an automated data reader are disclosed. A system can include a data reader to read an optical code disposed on the objects, a transport mechanism, an object measurement system to measure dimensions of objects that are transported by the transport mechanism, a light plane generator to project a light plane that produces a light stripe on an object, and a camera to capture image data of objects and a light stripe thereon that can be processed to determine a deviation of a light stripe relative to an optical center within the image data. A deviation from the optical center is used to determine one or more dimensions of the object. | 01-30-2014 |
20140034731 | CALIBRATION AND SELF-TEST IN AUTOMATED DATA READING SYSTEMS - Calibrating extrinsic parameters of an imaging system in an automated data reading system includes obtaining, from the imaging system, image data representing an imaged portion of a planar calibration target. The target is coupled to a housing of the automated data reading system and superimposed on a surface thereof. For example, the calibration target is placed on a conveyer surface, or it is printed on the housing of the automated data reading system. The imaged portion of the planar calibration target includes spaced-apart optical codes disposed at positions that coincide with predetermined locations of the automated data reading system to define known calibration-control points for the surface. Optical codes represented in the image data are decoded to obtain observed calibration-control points used for calibrating the extrinsic parameters based on differences between the known and observed locations of the calibration-control points. | 02-06-2014 |
20140339309 | SYSTEMS AND METHODS OF OPTICAL CODE READING USING A COLOR IMAGER - Systems and methods of optical code reading include production of image data by a color image sensor array and processing of the image data to decode an optical code. In one configuration, the color image sensor array includes first and second sets of sensor pixels sensitive to light having different wavelengths. Reflected light is focused by an optical system to form one or more images of an optical code on the color image sensor array. The optical system includes optics to form first and second images of an object bearing the optical code, where the first image excludes light of the second wavelength and the second image excludes light of the first wavelength, thereby enabling the first set of sensor pixels to sense the first image without substantially sensing the second image and the second set of sensor pixels to sense the second image without substantially sensing the first image. | 11-20-2014 |