Patents in subclass Registers/Analog To Square Wave Converter (E.G., Digitizer, Binarizer, Slicer)
Parent class: Registers
| Number | Patent title | Issue Date |
|---|---|---|
| 07407096 | System and method for training and monitoring data reader operators A scanner or other data reader is equipped with means for determining characteristics of an operator's scanning technique. In a preferred configuration, the scanner is integrated with a weigh scale for obtaining a dynamic weight of an... |
08/05/2008 |
| 07380721 | 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... |
06/03/2008 |
| 07299985 | 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... |
11/27/2007 |
| 07204423 | 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 function that compensates for beam... |
04/17/2007 |
| 07093763 | 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 digitizes the analog signal to produce a... |
08/22/2006 |
| 07083101 | 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 .DELTA.Tx distance is y times of a basic... |
08/01/2006 |
| 07051937 | 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... |
05/30/2006 |
| 06978937 | 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 T 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... |
12/27/2005 |
| 06874688 | 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. |
04/05/2005 |
| 06871785 | 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 electrical signal generated by the sensor and... |
03/29/2005 |
| 06811087 | 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 corresponding to a reflected light from a... |
11/02/2004 |
| 06769617 | 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 data and outputting the processed image... |
08/03/2004 |
| 06715684 | 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 reproducing section determines a... |
04/06/2004 |
| 06712272 | Method and apparatus for reading invisible symbol An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from... |
03/30/2004 |
| 06688524 | 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 representative of the at least one scan; c)... |
02/10/2004 |
| 06637656 | 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 arithmetic processing. The optical reading... |
10/28/2003 |
| 06508405 | 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 thresholds are generated based on the digital... |
01/21/2003 |
| 06471126 | Method and apparatus for reading invisible symbol An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from... |
10/29/2002 |
| 06382512 | 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 circuit, a judging circuit, a scanner... |
05/07/2002 |
| 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 signal generated by the photoelectric... |
01/01/2002 |
| 06334572 | 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 signal generated by the photoelectric... |
01/01/2002 |
| 06328214 | 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 matrix, an analog/digital converter to convert... |
12/11/2001 |
| 06202928 | 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 scanning the bars by a light beam, a sensor for... |
03/20/2001 |
| 06189794 | 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 signal generated by the photoelectric... |
02/20/2001 |
| 6168081 | Method and apparatus for reading invisible symbol An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from... |
01/02/2001 |
| 06168081 | Method and apparatus for reading invisible symbol An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from... |
01/02/2001 |
| 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... |
12/26/2000 |
| 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 code to generate in response a signal... |
08/15/2000 |
| 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 substantially alternating waveform profile defined... |
08/08/2000 |
| 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 order may be dynamically updated to... |
08/01/2000 |
| 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 eliminated so as to enable edge... |
06/13/2000 |
| 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 symbol has been damaged, and a decoder.... |
03/21/2000 |
| 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... |
11/09/1999 |
| 5969326 | 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 order may be dynamically updated to... |
10/19/1999 |
| 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 signal representing the reflectance... |
09/07/1999 |
| 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 a decoding program. If the apparatus... |
07/27/1999 |
| 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 data transmission range thereof without a... |
07/27/1999 |
| 5923023 | Method and apparatus for detecting transitions in an input signal A method and apparatus for determining the transitions between binary levels of an input signal such as a scanned bar code label by detecting zero crossings of an approximated second derivative of the input signal. Samples of the input... |
07/13/1999 |
| 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 laser beam, a photosensor for detecting... |
05/11/1999 |
| 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 freedoms of movement to fix the field of view... |
03/16/1999 |
| 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 on a second port. Based on a difference... |
01/26/1999 |
| 5861615 | Palm scanner A hand-held optical reader for reading printed indicia on a remote target includes a light source for generating a scanning light beam and a detector for detecting the light reflected from the printed indicia. The light source and... |
01/19/1999 |
| 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 point in the distorted symbol image within... |
12/29/1998 |
| 5854479 | Bar-code reader and bar-code reading method for detecting various possible reproducible bar code combinations and synthesizing information therefrom A bar-co 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... |
12/29/1998 |
| 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 elevation relative to a printed circuit board... |
12/15/1998 |
| 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 the reading of a 1D bar code symbol, the... |
11/17/1998 |
| 5837987 | Hand-held optically readable character set reader having automatic focus control for operating over a range of distances A hand-held optically readable information set reader having one or more photosensor arrays, at least one information set illuminator, and an information set image transfer system for projecting a readable image of an information set onto... |
11/17/1998 |
| 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 measuring device. The cover or... |
10/27/1998 |
| 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 the view of a light sensor in different... |
10/27/1998 |
| 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 2D finder patterns and 2D symbologies. A... |
10/20/1998 |