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Class 235/455 - Light level control


Subclass of Class 235 - Registers
Definition: Subject matter including means to maintain the light contrast
No. of applications: 42
Last issue date: 03/22/2012


1    
Application No.Application TitleIssue Date
20120067956SYSTEM 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 mi...
03/22/2012
20120067957Illumination Setting Support Apparatus Of Optical Information Reading Apparatus
There is provided an illumination setting support apparatus that enables a user to easily set an optimal lighting pattern while visually checking. A schematic diagram of the illumination unit is displayed in the setting screen, so that clicking on a desired area inside ...
03/22/2012
20120031975ILLUMINATION BLOCKS FOR A GRAPHICAL CODE READER
A system for reading graphical codes includes a graphical code reader. The graphical code reader includes an imaging engine and illumination control circuitry. The imaging engine includes a light source. The system also includes an illumination block that is removably c...
02/09/2012
20120000982ADAPTIVE 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 parameter...
01/05/2012
20110284637GRAPHICAL CODE READERS THAT ARE CONFIGURED FOR GLARE REDUCTION
A method for glare reduction may be implemented by a graphical code reader. The method may include illuminating a target area using a plurality of light sources. The method may also include capturing images of the target area using at least one image sensor that operate...
11/24/2011
20110248086OPTOELECTRONIC DEVICE
An optoelectronic device for detecting marks with defined contrast patterns includes a transmitter to emit polarized light beams, a receiver to receive light beams and having an output to produce receiving signals representing the received light beams, and a an evaluati...
10/13/2011
20110210174Optical Code Detection With Image Exposure Control
In an optical code detection system and method, infrared pulses are utilized to detect the presence of an object within the range of an optical imaging device, but the image of an infrared pulse reflected from the object is also analyzed to determine the distance betwee...
09/01/2011
20110186637APPARATUS AND METHOD FOR READING SYMBOL INFORMATION
An apparatus and method for reading symbol information enabling improvement of decoding accuracy, not being affected by the condition of a reflection coefficient waveform of a reflected light beam and the kind of symbol information to be read. The method includes: readi...
08/04/2011
20110163162LIGHTING SYSTEM FOR CONTRASTING ENGRAVED CODES
A lighting device for increasing the contrast of an image of a concave or convex structure provided on a surface, the device including: a first light source arranged so as to emit, according to a first axis of incidence Ii, a first light, the bandwidth of said first lig...
07/07/2011
20110147454SELF-CHECKOUT TERMINAL AND CONTROL METHOD THEREFOR
According to one embodiment, a self-checkout terminal includes a reading unit and a light emitting unit. The reading unit reads commodity information from a commodity held over a reading position. The light emitting unit emits light in a first color to illuminate the re...
06/23/2011
20110024504LIGHT PIPE ILLUMINATION SYSTEM AND METHOD
A system and method is provided for illuminating a subject using a light pipe that transmits light from a source, such as an LED ring illuminator to an outlet that directs the light appropriately as either bright field illumination, dark field illumination or both. The ...
02/03/2011
20100294838METHOD OF REDUCING NOISE IN AN OPTICALLY READ IMAGE USING AN OPTICAL COLLECTION DEVICE
A system and method of reading an indicia and rejecting ambient light is disclosed. An imaging signal and an ambient signal are received by the system where the imaging signal corresponds to indicia information and a first portion of the ambient light, and the ambient s...
11/25/2010
20100294839OPTICAL CODE SCANNER WITH AUTOMATIC FOCUSING
A code scanner, which illuminates a scanned code from a distance, includes a liquid lens which focuses the reflected image of the code on an image sensor. The scanner includes a range detector, preferably laser-based, which determines the distance to the scanned code, a...
11/25/2010
20100200658HIGH-RESOLUTION OPTICAL CODE IMAGING USING A COLOR IMAGER
An optical code or other data reading device includes a color image sensor array positioned to sense light reflected from an object, and to produce image data. In one configuration, the color image sensor array has multiple sets (e.g., first and second sets) of sensor e...
08/12/2010
20100155474SYSTEM AND METHOD FOR CALIBRATING AN OPTICAL READER SYSTEM
A method and system for calibrating optical reader systems employs a target with areas comprising linear gray scale levels. The gray scale levels include the darkest and the lightest scenes. The gray scale levels are illuminated by an array of LEDs and the light reflect...
06/24/2010
20100147948GRAPHICAL CODE READERS THAT ARE CONFIGURED FOR GLARE REDUCTION
A method for glare reduction may be implemented by a graphical code reader. The method may include illuminating a target area using a plurality of light sources. The method may also include capturing images of the target area using at least one image sensor. The method ...
06/17/2010
20100096459Electro-optical reader with extended working range
A reader for, and a method of, electro-optically reading a symbol in a range of working distances include a housing, a data capture assembly supported by the housing for directing light at a variable power level at the symbol in a plurality of successive scans, and for ...
04/22/2010
20100078479Arrangement for and method of controlling image capture parameters in response to motion of an imaging reader
An arrangement for, and a method of, reducing image blur in response to motion of an imaging reader for imaging symbols to be read, employs an illuminating light assembly supported by the reader for illuminating a symbol with illumination light having an intensity level...
04/01/2010
20100044436GRAPHICAL CODE READERS THAT PROVIDE SEQUENCED ILLUMINATION FOR GLARE REDUCTION
A graphical code reader that provides sequenced illumination for glare reduction may include a plurality of light sources that illuminate a target area. The graphical code reader may also include at least one image sensor that captures an image of the target area using ...
02/25/2010
20100025469METHOD AND APPARATUS FOR PROVIDING OMNIDIRECTIONAL LIGHTING IN A SCANNING DEVICE
A system and method is provided for selectively controlling the illumination, and particularly dark field illumination, applied to a symbol to be decoded, and for determining a suitable or optimized level of lighting for decoding the symbol. A ring-shaped illuminator is...
02/04/2010
20100012726Integrated Optical Exit Window
A device including a housing, an imaging engine and a transparent exit window. The imaging engine is located within the housing. The exit window is in the housing allowing light to pass from an exterior of the device to the imaging engine within the housing. The exit wi...
01/21/2010
20090272804METHOD AND APPARATUS FOR READING OPTICAL INDICIA
A method and apparatus for reading optical indicia. The method includes generating calibration light, and measuring an intensity of the calibration light reflected into a detector system. The method also includes determining an optimum exposure level for the imaging sys...
11/05/2009
20090242640Method for Optimizing Auto-Exposure Performance of an Imaging Device
An imaging device includes an illumination element; an auto-exposure element; and a processor disabling the auto-exposure element and subsequently disabling the illumination element....
10/01/2009
20090084848Arrangement for and method of uniformly illuminating direct part markings to be imaged and electro-optically read
Performance of an imaging reader for electro-optically reading direct part markings on workpieces is enhanced by uniformly illuminating the markings. An illuminator is operative for emitting illumination light of greater and lesser intensity toward the indicia. A diffus...
04/02/2009
20090084847Imaging-Based Bar Code Reader Utilizing Modified Rolling Shutter Operation
An imaging system for use in an bar code reader for imaging a target bar code. The imaging system includes a 2D sensor array generating a series of image frames and The sensor array can be selectively operated in a rolling shutter mode of operation or a pseudo global sh...
04/02/2009
20080296379GRAPHICAL CODE READERS FOR BALANCING DECODE CAPABILITY AND SPEED BY USING IMAGE BRIGHTNESS INFORMATION
A method for adaptively varying resolutions of captured images may include capturing images and processing the captured images. The method may also include determining brightness information about the captured images. The method may also include varying the resolutions ...
12/04/2008
20080078835Laser 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 ...
04/03/2008
20080000978Methods and Apparatus for Information Capture Illumination
Methods and apparatus for illuminating objects comprising asymmetrically illuminating an object using an illumination medium on one side of an optical module of an information capturing module, capturing an electronic representation of the object and decoding the electr...
01/03/2008
20070252006Method and apparatus for non-invasive laser based labeling of plant products
A method and apparatus for labeling plant products based on laser activation of a color-changing compound is disclosed. In the preferred embodiment, a nozzle sprays a coating of photosensitive material containing color-changing chemical component. An optional drying sta...
11/01/2007
20070057062Laser power control arrangements in electro-optical readers
Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of an over-power condition not conforming to preestablished standards to meet prevalent safety standards. ...
03/15/2007
20070051812Method and apparatus employing imaging and/or scanning for reading machine-readable symbols such as barcode symbols
A machine-readable symbol reader is operable to read one and two-dimensional machine-readable symbols such as barcode or matrix code symbols. The reader includes an imaging subsystem and a scanning subsystem. The reader initially attempts to acquire a symbol operating a...
03/08/2007
20060163355Data reader and methods for imaging targets subject to specular reflection
A data reader such as for example an imaging reader with a CCD or CMOS imager or the like, having multiple images of a target item illuminated or acquired from different directions in which the image signals are combined into a complete image of the item or selected por...
07/27/2006
20060144945Methods and apparatus for information capture illumination
Methods and apparatus for illuminating objects comprising asymmetrically illuminating an object using an illumination medium on one side of an optical module of an information capturing module, capturing an electronic representation of the object and decoding the electr...
07/06/2006
20060118629Device for reading optical data code
An optical data code reader includes an illuminator device for illuminating an optical data code to be read out, an image-taking device for taking an image of this optical data code, a readout device for decoding the optical data code by processing image data generated ...
06/08/2006
20060113386Illumination pulsing method for a data reader
Row signals or other typically regular signals generated by an imager during each frame period of the imager are counted to determine when to emit pulses of illumination. Methods in accordance with the preferred embodiments may facilitate synchronization of at least som...
06/01/2006
20060043185Motion detection in imaging reader
A subarray of a CMOS imaging sensor array is addressed to detect when a target symbol is fully within a field of view of an imaging reader to improve reader performance at high swipe speeds. ...
03/02/2006
20060043184Method of forming an optical pattern, optical pattern formation system, and optical tweezer
Reading light (26) is phase-modulated by a phase-modulating spatial light modulator (12), the phase-modulated reading light (26) is Fourier-transformed, and an image of the Fourier-transformed reading light is focused on an output plane (24) ...
03/02/2006
20060032921Method and apparatus for providing omnidirectional lighting in a scanning device
A system and method is provided for selectively controlling the illumination, and particularly dark field illumination, applied to a symbol to be decoded, and for determining a suitable or optimized level of lighting for decoding the symbol. A ring-shaped illuminator is...
02/16/2006
20060032922Optical reader and use
An optical reader is provided for reading a symbol representing information having areas of different light reflectivity. The optical reader comprises a radiant energy source, a photodetector, an optical system and a decoder. The radiant energy source generates a radian...
02/16/2006
20060016894Optical receiver
The present invention is to provide an optical receiver by which the avalanche photodiode (APD) can be protected from the self-breakdown when the signal light with excess power enters therein. The APD is biased by the DC/DC converter via the control circuit including a ...
01/26/2006
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