|
Match
|
Document |
Document Title |
|
|
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...
|
|
|
7204423 |
Bar code signal processing
A low pass filter that approximates a Gaussian transfer function filters the analog bar code signal prior to digitization is used to smooth the bar code signal. The Gaussian filter has a transfer...
|
|
|
7093763 |
Laser scanner having analog digitizer with increased noise immunity
A laser scanner for reading a bar code having a plurality of bar code elements. The laser scanner includes a digitizer which receives as an input an analog signal from photodetector circuitry and...
|
|
|
7083101 |
Bar-code reader and method of reading bar-code
A signal obtained by optically scanning a bar code is subjected to differentiation to obtain differential data. Peak-to-peak distances are calculated from the differential data. When a peak-to-peak...
|
|
|
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...
|
|
|
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...
|
|
|
6874688 |
Data collection signal processing for increased performance in electro-optical readers
Signal processing performance in electro-optical readers is improved by changing filter characteristics and/or digitizer thresholds during successive scans.
|
|
|
6871785 |
Method and device for compensating undesired variations in an electrical signal generated by an optical code reader
The method for compensating undesired variations in an electrical signal generated by a sensor of an optical code reader comprises the steps of generating an envelope signal starting from the...
|
|
|
6811087 |
Barcode scanner
A barcode scanner comprising a laser driving circuit to drive a laser by a pulse signal generated by an oscillator, a preamplifier to amplify a voltage of a barcode signal from a photodetector...
|
|
|
6769617 |
Image forming apparatus and image forming method
The image forming apparatus and method subject image data to predetermined image processing to obtain processed image data and execute both of outputting a print according to the processed image...
|
|
|
6715684 |
Code reading apparatus
A reconstituting section obtains block-address information from each of read out blocks. According to the obtained pattern in the block-address information obtained by the reconstituting section, a...
|
|
|
6688524 |
Method for reconstructing a bar code through consecutive scans
The method for reconstructing a bar code through consecutive scans comprises the following steps: a) carrying out at least one scan of the bar code; b) determining a reconstructed wave form...
|
|
|
6637656 |
Optical reading apparatus and optical reading method
The present invention concerns an optical reading apparatus and an optical reading method for obtaining objective information by reading a subject and processing the read information through an...
|
|
|
6508405 |
Methods and apparatus for area weighted means processing of barcode signals
Techniques for removing noise effects in processing a barcode signal. A photosignal produced by scanning a barcode is used to generate a digital first derivative signal. Positive and negative...
|
|
|
6382512 |
Signal reading control apparatus for barcode scanner
A signal reading control apparatus for barcode scanner comprises a Decoder and a laser engine. The laser engine includes an Analog circuit, a Tone Decoder, a Time Delay, a Flip Flop, an Oscillation...
|
|
|
6334572 |
Bar-code reader
A bar-code reader having a photoelectric conversion unit for converting reflected light from a bar code into an electric signal and a changing point detecting unit for detecting, from the electric...
|
|
|
6328214 |
Opto-electronic device for acquisition of images of codes in one and two dimensions
The invention concerns an oplo-electronic device for acquisition of images of codes in one and two dimensions, comprising an electronic sensor constituted by a high-resolution photosensitive...
|
|
|
6202928 |
Optical device for reading and decoding a barcode
An optional device for reading and decoding bars of different reflectivity arranged in accordance with a barcode and adjoining one another. The device includes an optical scanning device for...
|
|
|
6189794 |
Bar code reader determining unit for determining the true changing point and correcting unit for correcting the false changing point to correct changing point
A bar-code reader having a photoelectric conversion unit for converting reflected light from a bar code into an electric signal and a changing point detecting unit for detecting, from the electric...
|
|
|
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...
|
|
|
6102292 |
Method of compensating the edge positions of a signal generated by scanning a bar code
A method of compensating the edge positions of a signal generated by scanning elements of a bar code, the method including the steps of lighting the code and determining the light diffused by the...
|
|
|
6098883 |
Method of estimating the mid-points of bar code elements
A method of estimating the mid-points of elements of a bar code, wherein the code is illuminated, and the light diffused by the code is picked up to generate in response a signal having a...
|
|
|
6095422 |
Method and apparatus of autodiscriminating in symbol reader employing prioritized and updated table of symbologies
A method and apparatus employs a weighted order stored in a weight table for automatically discriminating optical symbols which may be encoded in any one of at least two symbologies. The weighted...
|
|
|
6073849 |
Electronic edge detection system using a second derivative signal processor
An electronic edge detection system for use in a barcode scanning system utilizing second derivative signal processing wherein the temporal offset between the first and second derivative signals is...
|
|
|
6039252 |
Bar code reading system for reconstructing irregularly damaged bar codes
A bar code reading system capable of reconstructing irregularly damaged bar codes includes an input device such as an omnidirectional or CCD scanner, processors for determining whether the bar code...
|
|
|
5949054 |
Bar code reader for reading high to low contrast bar code symbols
A bar code reader is provided which can read bar code symbols of varying contrast, from high to medium to low contrast. The bar code reader includes a digitizing circuit which digitizes an analog...
|
|
|
5929419 |
System and method for preventing authorized movement of cordless bar code symbol readers from designated scanning environments
Disclosed is a fully automatic bar code reading system having at least one automatic (i.e., triggerless) portable bar code symbol reading device, and an associated base unit positioned within the...
|
|
|
5929418 |
Optical reader having improved menuing features
An optical reading apparatus which is adapted to operate in the manner indicated by the enabled ones of the parameters stored in a parameter table. A processor stores at least a menuing program and...
|
|
|
5902989 |
Single integrated circuit chip with on-board motor drive, laser drive and digitizer
An electro-optical reader reads indicia having parts of different light reflectivity within a limited working range of distances relative to the reader. The reader includes a laser for emitting a...
|
|
|
5883373 |
Object-sensing workstation with adjustable scanning head
A workstation has a base supportable on a support surface at a point-of-transaction site. A scanning head having a field of view is adjustably positioned on and above the base with multiple...
|
|
|
5864129 |
Bar code digitizer including a voltage comparator
A digitizer for a barcode scanner includes an amplifier and a comparator. The amplifier receives a feedback signal and a differentiated return signal on a first port, and a reference voltage signal...
|
|
|
5854478 |
Method and apparatus for reading machine-readable symbols having surface or optical distortions
A method and apparatus for reading a distorted image of data collection symbol within a reader image generated and stored by a two-dimensional symbology reader begins by first locating a starting...
|
|
|
5850078 |
Simplified assembly and automatic testing of components in electro-optical systems for reading coded indicia
Various optical components of an electro-optical system for reading coded indicia are mounted on a chassis snap-mounted in a housing. The optical components are supported by the chassis at an...
|
|
|
5837985 |
Optical imaging assembly having improved image sensor orientation
An imaging assembly having a 2D image sensor so oriented in relation to its supporting structure that, when a reader including the imaging assembly is held in its normal operating position during...
|
|
|
5828050 |
Light emitting laser diode scanner
A portable scanning head emits and receives light from a light-emitting diode to read symbols, such as bar-code symbols. The optics within the scanner are operative for focusing a light beam and...
|
|
|
5828047 |
Cycle measurement device and method for making the same
A cycle measuring device and method for making the same utilizing a cover or protective layer, continuous outer peripheral bar codes and inner annular bar codes around the mounting apertures of the...
|
|
|
5825008 |
Apparatus and method for setting radial bar code disc sensor gain in a phtographic camera
A photographic film camera adapted to receive a film cassette having a rotatable radial bar code data disk mounted at one end thereof is provided with a variable gain opto-sensor circuit responsive...
|
|
|
5825006 |
Optical reader having improved autodiscrimination features
A method and apparatus for autodiscriminating and decoding any of a plurality of 1D linear bar code symbols which use different 1D symbologies and of 2D matrix bar code symbols which use different...
|
|
|
5821520 |
Bar code scanning system with the pre-decoding signal processing and method for bar code candidate selection for decoding
A system for processing output signals of an electro-optical scanner adapted for reading a bar code indicia having parts of different light reflectivity and non bar code indicia adjacent the bar...
|
|
|
5821519 |
Bar code scan stitching
A method for combining decoded scan fragments of a bar code symbol composed of a delimited plurality of bar code elements representing an ordered sequence of data characters. The method includes...
|
|
|
5811776 |
Method and apparatus for accurately locating data regions in stored images of symbols
A method and apparatus locates multiple "bounding boxes" within an image of a symbol located within an image stored by a reader. The symbol preferably has a recognition pattern with an...
|
|
|
5777311 |
Optoelectronic a device employing a digital filter which operates in different coefficient sets
An optoelectronic device for identifying a mark having a defined contrast pattern includes a transmitting element for emitting a beam of transmitted light. A deflector unit periodically guides the...
|
|
|
5773807 |
Arrangement for and method of minimizing reading errors in bar code symbol readers
A reader generates a scanning beam for reading a bar code symbol on a selected item. The reader includes a database in which codes for all symbols to be read are stored, and frequency of use data...
|
|
|
5734152 |
Optical scanners and signal processors therefor
An optical scanning system is provided for producing a signal representative of a spatial distribution of indicia having different degrees of reflectivity to light, such as a bar code. The system...
|
|
|
5635699 |
Omnidirectional scanning method and apparatus
A method and apparatus for reading encoded symbols such as bar code labels at any orientation to a raster scanning device. A pattern of virtual scan lines is selected over the two-dimensional...
|
|
|
5633488 |
Method and apparatus to enable the high speed evaluation of bar code indicia
A method and apparatus to enable the high speed evaluation of the quality of a bar code indicia by processing a scan reflectance profile signal generated by a scanner unit. The scan reflectance...
|
|
|
5619028 |
Digitizer for a bar code reader utilizing a first derivative signal and an analog ground comparison signal
A system for digitizing an analog electric signal generated from the photoelectronic conversion of reflected light when scanning indicia having spatially-separated, light-reflective portions, the...
|
|
|
5600118 |
Binarizing circuit and bar-code reader using such
A binarizing circuit includes a binary signal generating unit for generating a binary signal from an input signal, supplied from an external unit, in accordance with a processing characteristic, a...
|
|
|
5594230 |
Analyzer for bar code readers and decoders
A bar code reader/decoder analyzer method and system for testing the quality characteristics of bar code readers and bar code decoders. An analyzer unit is interface with and controlled by host...
|