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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...
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...
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...
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...
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 (R 1 , R 2 , R 3 , R 4 . . . )...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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....
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...
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...
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...
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...
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...
4707612 Binary coding system  
A three channel, binary coding technique, especially adapted for identifying intermittently, erratically, or continuously moving objects along a linear path (conveyor track, roadway, or the like)....
4680457 Code reader  
A code reader and method which is capable of reading "black-on-black" codes such as bar codes which are molded in the surface of an object. The code is illuminated so as to provide light-to-shadow...
4578570 Bar code processing apparatus  
A plurality of vertically aligned sensing members scan a matrix type bar code on a document. During the scanning of the bar code, the time period between the detection of succeeding bars is...
4528443 Bar code reading system and method  
A bar code reading system having a wand that detects variations in light reflected by bars and spaces of the label produces a sequence of corresponding pulses and intervals as the wand scans the...
4379224 Apparatus for interpreting Code 39 bar code data  
An apparatus for interpreting digital output signals from a Code 39 bar code data system wherein all of the bars and spaces in a signal code character are measured for time duration, minimum and...
4323772 Bar code reader system  
A reader system for optically scanning a bar code and processing the resulting video signals to produce corresponding digital signals is disclosed. The scanner comprises a camera having an image...
4245152 Decoding method and system for ETAB bar code  
A high density bar code scanned to be read out provides a time varying analog electric signal which after being reshaped is decoded, i.e., converted into a binary bit representation based on...
4147295 Method and apparatus for recognizing bar codes  
A bar code recognition system in which a threshold value for discriminating each bar of bar codes is automatically corrected. Bar codes representing information are constituted by a combination of...
4108368 Coded record and method of and system for interpreting the record  
A machine-readable record or label includes alternating areas of different reflectivity providing a binary coded data record. The record is made by selecting the widths of the areas such that an...
4086478 Mark position detecting apparatus  
A mark position detecting apparatus including a pattern signal generating circuit, a presettable counter, a detector circuit, a first register, a memory device, a second register, a divider and a...
4012716 Coded record and method of and system for interpreting the record  
A machine-readable record or label includes alternating areas of different reflectivity providing a binary coded data record. The record is made by selecting the widths of the areas such that an...
4004131 Article carrying coded indicia  
A machine readable binary encoded label having start, data, and stop sections comprising concentric arcuate or linear bars of two different reflectivities. The annular portions or bars are arranged...
3946205 Document feed for optical scanner  
In a system for optically scanning and reading data printed in transversely extending lines longitudinally spaced apart on a document and comprising a scanning head including an electro-optical...
3927303 Information evaluation means  
Method of evaluating information in the form of linecoded grouped information bits, and to a coding arrangement device for presenting information for evaluation by such method.
3920957 Date records and method and apparatus for their reading and production  
The combination of a record of binary digital data, comprising a recording substrate presenting a plurality of adjacent pairs of adjacent parallel bar-like zones each of which may be of either of...
3882464 Size ratio label reading system  
A label reading system for reading a label including a cell of information including segments having contrasting characteristics, at least one of the segments occurring in more than one width...
3860794 SYSTEM FOR CONVERTING MODULATED SIGNALS TO SQUAREWAVE OUTPUTS  
An analog system for processing modulated reflected energy and producing a squarewave output representative of coded information causing the modulation is described. The modulation can be caused by...
3860792 METHOD OF IDENTIFYING DIFFERENT DISTANCES BETWEEN MARKINGS ON A DATA RECORD AND A DEVICE FOR PERFORMING THE METHOD  
An optically readable coded record consisting of markings comprising black bars on a white background having a predetermined spacing relationship for representing binary 1's and 0's is read by a...
3854036 TAG READER TO DIGITAL PROCESSOR INTERFACE CIRCUIT  
Circuitry particularly suitable as an interface between a merchandise tag reader, or the like, and a digital computer. Tag readers which may be used by store clerks or market checkers to read the...
3838251 METHOD OF INTERPRETING A CODED RECORD  
A machine readable, binary coded record or label includes alternating bars and spaces of different reflectivity in which the widths of the bars and spaces are assigned one of two values...
3811033 CODED RECORD INTERPRETING SYSTEM  
A machine readable, binary coded record or label includes N alternating bars and spaces of different reflectivity in which the widths of the bars and spaces are assigned one of two values...
3796863 OPTICAL SCANNING ARRANGEMENT AND ARTICLE USEFUL THEREWITH  
A machine readable binary encoded label having preamble, data and end sections comprising concentric annuli of two different reflectivities. The width of each annulus is an integral multiple N of...
3792236 RECORD READING SYSTEM  
A machine-readable record or label includes alternating areas or bars of different reflectivity whose relative widths are varied to provide a binary coded data record. The record includes start and...
Matches 1 - 50 out of 67 1 2 >