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| Number | Title | Issue Date |
| 7422155 | Image printing method and apparatus which can detect edge of printing medium while reading barcode on printing medium using one sensor An image printing method and apparatus which can detect the edge of a printing medium on which a barcode is written while reading the barcode using one sensor unit. The apparatus for printing an image on a printing medium on which a barcode is written includes a sen... | 09/09/2008 |
| 7380721 | Low-cost compact bar code sensor A barcode sensor package has an optical emitter circuit and an optical detector circuit which are formed as one or more integrated optical circuits disposed in a housing which has a reading surface and one or more apertures located between the optical emitter and de... | 06/03/2008 |
| 7299985 | Transmitting enhanced scanner signals on a single channel A system and method for encoding scanner signal strength and timing information provided, possibly on multiple signal lines, from a digitizer circuit into a signal that can be transmitted on a single line to a modified decoder. A multiplexing device multiplexes the ... | 11/27/2007 |
| 7273177 | Camera-based barcode recognition Embodiments of the invention relate to decoding encoded barcode information from a series of camera-captured images by generating binarized sequences from the series of camera-captured images and decoding the encoded barcode information from the binarized sequences.... | 09/25/2007 |
| 7190835 | Code reader performing coded image decoding using non-dedicated decode processor A coded image capture and decoding system includes an image capture unit and a host unit which operate to capture image data, generate a plurality of coded images, and, thereafter, to decode the plurality of coded images with a non-dedicated host processing circuitr... | 03/13/2007 |
| 7159780 | Method for reading a symbol having encoded information Methods and apparatuses are provided for imaging and decoding symbols such as two-dimensional relief formed symbols and in particular, symbols wherein one or more edges of any number of data cells within the symbols are at least partially discernable. In one aspect ... | 01/09/2007 |
| 7137558 | Methods and apparatus for forming barcode characters Methods and apparatus described herein form barcode characters by determining a number of pixels associated with forming a first bar and a second bar of a first barcode character. A separation width value associated with the first bar and the second bar is determine... | 11/21/2006 |
| 7133791 | Two-mean level-crossing time interval estimation method N-sample level-crossing estimator methods and devices are provided that extract more information from given time samples than the current two-sample approach and that are more resistant to interference from noises. The two-mean level-crossing time-interval estimatio... | 11/07/2006 |
| 7124945 | Reading unit and marking card for optical mark reader The present invention relates to a reading unit and a marking card for optical mark reader. The reading unit comprises a plurality of optical sensing devices (R1, R2, R3, R4 . . . ) corresponding to a plurality of marks (M1,... | 10/24/2006 |
| 7077322 | Bar-code reader An extractor extracts a part that is apparently a bar-code signal from a signal that is subjected to opto-electric conversion. A narrow-band differential processor forms a waveform of an edge by differentiating by using a module frequency. The module point extractor... | 07/18/2006 |
| 7051937 | System and method for fast binarization of bar codes in the presence of noise A system and method to binarize the bar code image in the presence of noise in order to render bar codes more detectable in the presence of noise. The method of this invention includes the steps of applying a gradient detecting filter to the bar code image, obtainin... | 05/30/2006 |
| 7051930 | Bar code for mail processing systems The present invention is directed to a bar code symbol having stored thereon a data structure. The data structure includes a plurality of module elements. Each module element is configured as a bar symbol or a space symbol. The data structure includes a start charac... | 05/30/2006 |
| 7021545 | Bar-code reader, method of reading a bar code and computer product In an optical bar-code reader, an optical scanner optically scans a bar code to obtain optical power of light reflected from white bars and black bars of the bar code, a differentiation unit calculates a differential of the optical power to obtain a differential wav... | 04/04/2006 |
| 6978937 | METHOD OF READING INFORMATION AND APPARATUS THEREFOR, METHOD OF ACQUIRING SIGNAL FOR USE WITH INFORMATION READING APPARATUS, METHOD OF PROCESSING BAND LIMITATION, METHOD OF EXTRACTING TIMING POINT AMPLITUDE AND METHOD OF PROCESSING SIGNAL THEREOF, READ SIGNAL PROCESSING UNIT, AND METHOD OF PROCESSING READ SIGNAL AND PROCESSING APPARATUS THEREOF A method of reading information which makes it possible to suppress the size of hardware and a price thereof and to improve an S/N ratio of a reading signal and reading resolution, wherein even if depth of field for reading is enlarged or a concave/convex portion or... | 12/27/2005 |
| 6976630 | Bar-code reader, method of reading a bar code, and computer product In an optical scanner, an optical scanner optically scans a bar code to obtain signal strength of light reflected from black bars and white bars of the bar code, an extracting unit extracts edge data, which includes a plurality of edges and the signal strength of wh... | 12/20/2005 |
| 6961846 | Data processing unit, microprocessor, and method for performing an instruction The present invention relates to a data processing unit for executing instructions stored in a memory comprising a plurality of registers coupled with an execution unit comprising a logic unit for execution of logic operations. The logic unit comprises a first logic... | 11/01/2005 |
| 6945462 | Optical information reading apparatus An optical information reading apparatus applies light to an object to be read such as a bar code symbol, photoelectrically converts by a photodetector element a light image formed by the reflection light, and processes the obtained electric signal to output code da... | 09/20/2005 |
| 6943713 | Process and device for the sequential addressing of the inputs of a multiplexer of a data acquisition circuit The systematic, and possibly repeated, acquisition of several distinct quantities for exploitation by a user system by utilizing a multiplexer with staged architecture without all inputs hard-wired. Each multiplexer stage is addressed by an elementary counter chaine... | 09/13/2005 |
| 6761314 | Bar code symbology for consumer scanning applications A bar code symbology derived from form a set of patterns of bar and spaces in which each character spans a distance of m module widths and is represented by n bars and p interleaved spaces; and the largest single bar or space is limited to k modules in width, having... | 07/13/2004 |
| 6502750 | Scanning beam system and method for reading information symbols A scanning system and method reads information symbols, such as optical mark recognition ("OMR") symbols. Each OMR symbol typically includes a predetermined number of cells, with each cell containing a bar or a space. An object detector detects the presen... | 01/07/2003 |
| 6478224 | Symbology-independent method and apparatus for identifying potential bar code data Systems (apparatus and methods) for reading bar code data detect light reflected and/or refracted from a target. The detected light is converted into an electrical signal containing width values that are indicative of widths of light areas and dark areas ... | 11/12/2002 |
| 6450405 | Optical code reader using binarization circuit and binarization circuit A differentiation signal DF differentiated by a differentiation unit is inputted to a slice level generation unit and to comparators. A first peak-hold circuit and a voltage division circuit generate a slice level having a slice ratio SLR that is constant... | 09/17/2002 |
| 6360948 | Method of reading two-dimensional code and storage medium thereof A method of reading information out of a two-dimensional code made up of a matrix of cells having a given optical pattern is provided. The two-dimensional code has location symbols used to locate the two-dimensional code and alignment symbols used to loca... | 03/26/2002 |
| 6357660 | Bar code reading apparatus and a method for the same A bar code reading apparatus including a reader for reading a bar code expressing a plurality of characters, and a CPU for decoding the characters according to a result of reading by the reader. A ratio between a character length Cy of an alrea... | 03/19/2002 |
| 6328212 | System for reading data on different planes of focus based on reflected light A system for reading data stored on a target in two different viewing planes includes a laser light source for generating a laser light beam and mirrors for focusing the laser beam on the two spaced apart viewing planes. Sensors detect the light reflected... | 12/11/2001 |
| 6299064 | Apparatus and method for correcting bar width, bar code reader, and method for decoding bar code An apparatus for correcting a bar width comprises a detecting section calculating a reference bar width serving as a reference of bar widths, a first calculation section calculating an average value of a plurality of reference bar widths, a second calcula... | 10/09/2001 |
| 6164542 | Method and apparatus for decoding unresolved symbol profiles produced from a reduced data set A method and apparatus for decoding profiles which may fail to resolve narrow elements in machine-readable symbols first begins by generating a reduced information set using a high speed circuit having contrast amplitude values and segment distance values... | 12/26/2000 |
| 6145744 | Method of reading bar code A method of the invention reads a bar code based on bar-code data obtained by scanning the bar code with light. The method includes the steps of a) obtaining bar-code data, b) obtaining a sum of bar-data widths with respect to a predetermined number of ba... | 11/14/2000 |
| 6142377 | Method of reading bar code A method of the invention reads a bar code based on bar-code data obtained by scanning the bar code with light. The method includes the steps of a) obtaining bar-code data, b) obtaining a sum of bar-data widths with respect to a predetermined number of ba... | 11/07/2000 |
| 6135354 | System and method for facilitating high speed processing of video signals containing images of barcode labels A barcode image processing system which processes video signals including video data representing images of barcode labels to be decoded and verified. A video signal containing video data representative of successive images of a plurality of barcode label... | 10/24/2000 |
| 5992745 | N, k structure bar code character value determination method and system A method and system of determining the character value of an n,k structured bar code. A first table is established to include entries wherein each entry has a number of bar width values representing a unique high order value. A second table is established... | 11/30/1999 |
| 5979765 | Bar-code reader and bar-code reading method for detecting various possible reproducible bar code combinations and synthesizing information therefrom A bar-code reader and a bar-code reading method each of which can perform an accurate, quick reading operation. The bar-code reader scans a bar-code with electromagnetic radioactive rays and then extracts data regarding a bar-width thereof based on the re... | 11/09/1999 |
| 5952643 | Bar code decoder for a lightpen A decoding facility for decoding signal samples characterizing symbols forming a particular pattern. The decoding facility, more particularly, forms the signal samples into groups and each group is decoded into a known symbol. This is done by matching a g... | 09/14/1999 |
| 5818024 | Pulse width demodulation device and method A sensor having an input and an output, wherein the output produces a signal transition whenever the sensor input traverses an indicia placed within a spaced plurality of indicia of varying widths. A logic unit is coupled to produce an interrupt signal an... | 10/06/1998 |
| 5404004 | Bar code reader having N counters and N-1 composers A bar code reader employs plural scanners for scanning a bar code mark with respective, plural optical scanning beams, counters connected with the scanners respectively producing numerical data representing the widths of corresponding black and white bars... | 04/04/1995 |
| 5336874 | Bar code reader with error detection and decode control A bar code reader includes a line sensor having a scanning range large enough to scan two or more bar codes. A portion of the scanning range having a size corresponding to a single bar code is determined as a reading range. A reading range comparator 35 d... | 08/09/1994 |
| 5270525 | Non-decoded type bar code reading apparatus A bar code reading apparatus for optically reading a bar code comprising bars and spaces successively and alternately arranged to output a digital signal to a decoder placed at the reading apparatus. The reading apparatus includes a conversion circuit for... | 12/14/1993 |
| 5184005 | Non-decoded type bar code reading apparatus A bar code reading apparatus for optically reading a bar code comprising bars and spaces successively and alternately arranged to output a digital signal to a decoder placed at the reading apparatus. The reading apparatus includes a conversion circuit for... | 02/02/1993 |
| 5036183 | Code reading device There is disclosed a bar code reading device that can highly accurately read bar codes. Threshold values are established for correct identification of bar codes without being affected by blots on and unevenness of the bar code carrying surface and unstabl... | 07/30/1991 |
| 4757206 | Bar code reading method and apparatus A bar code reading method and apparatus. Comparison reference values are calculated based upon actual measurements of the width of bars and spaces which comprise the bar code pattern and upon a prestored constant. The measured bar and space widths are com... | 07/12/1988 |
