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| Number | Title | Issue Date |
| 7845562 | Decoding system for coded data A decoding system is provided having decoder configured to determine a clock indicator from alignment data sensed by a sensor used to interact with coded data in a sensing region, update, from the determined clock indicator, a phase-locked loop (PLL), determine, fro... | 12/07/2010 |
| 7600688 | System surface for decoding coded data A system for decoding coded data provided on or in a surface is provided. The coded data includes at least one data portion arranged on or in the surface and alignment data at least partially indicative of at least one clock indicator. The system includes a sensor w... | 10/13/2009 |
| 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 |
| 7354000 | Method and system for sensing a barcode A method and system used in the barcode sensing process are disclosed, in which at least two instances of an optical signal are obtained from the same barcode in different time periods, and digitized by a first digitizer with a first threshold. The digitized results... | 04/08/2008 |
| 7355640 | Image capturing device An image capturing device having a function of clamping an image signal. When the image capturing device is activated, a synchronous signal generating section begins creation of a horizontal synchronous signal, and a counter begins counting a pulse of the horizontal... | 04/08/2008 |
| 7278577 | Image input system An image input system includes a solid state image pickup device and a preprocessor for performing correlated double sampling amplification on an output of the image pickup device and outputting a video signal. The preprocessor has a correlated double sampling ampli... | 10/09/2007 |
| 7254244 | Pop and click reduction using DAC power up and power down processing An audio amplifier generates an output to a load, in which a digital-to-analog converter drives the amplifier during powering up and powering down the amplifier. The digital-to-analog converter controls the amplifier to ramp the voltage at the output at a predetermi... | 08/07/2007 |
| 7081921 | Method and apparatus for processing front end signal for image sensor A front end signal processing method and apparatus for processing a signal from an image sensor are provided for readily clamping a black level, improving the manufacturing yield, and reducing the power consumption. A luminance detector/digitizer receives a sensor o... | 07/25/2006 |
| 7067998 | Drive circuit for brushless DC motors A drive circuit for brushless DC motors including a rotor and a stator with at least one stator coil includes a commutation device which supplies commutation pulses of drive current to the stator coil(s). The commutation device senses the rotor position and calculat... | 06/27/2006 |
| 7065645 | System, method, and apparatus for visual authentication A visual tag having an imprinted image, a processor for calculating a response string corresponding to the content of the imprinted image and a challenge string, and a changeable screen to display the response string in machine-readable symbols. An authentication de... | 06/20/2006 |
| 7051922 | Compact bioptical laser scanning system A bioptical holographic laser scanning system employing a plurality of laser scanning stations about a holographic scanning disc having scanning facets with high and low elevation angle characteristics, as well as positive, negative and zero skew angle characteristi... | 05/30/2006 |
| 7025267 | Method for reading a graphic pattern and acquiring its image A method for reading a graphic pattern by illuminating the graphic pattern with at least two groups of light sources, each of the at least two groups of light sources having at least one light source operating according to an illumination cycle that comprises an ill... | 04/11/2006 |
| 6993165 | System having a rotating optical system and a non-planar prism that are used to obtain print and other hand characteristic information A rotating optical system includes an optical element and a measuring device for locating and/or scanning a full palm print and/or full palm and fingerprint for a hand positioned on a non-planar surface of an optical element. The hand is placed on the non-planar sur... | 01/31/2006 |
| 6992846 | Micro reader scan engine with prism A scan engine is disclosed for use in a data collection device, as well as a method for producing a scan engine and an image sensor assembly. The scan engine includes a housing with an opening for receiving light from a scanned dataform, an image sensor which is loc... | 01/31/2006 |
| 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 |
| 6940548 | Analog optical black clamping circuit for a charge coupled device having wide programmable gain range An image processing apparatus (200) for a charge coupled device including analog front end circuitry having optical black and offset correction, whereby the offset and optical black correction circuit is programmable. The present invention includes a first ci... | 09/06/2005 |
| 6935564 | Circuit and method for correcting influence of AC coupling A systems and method generate a progressively corrected scan signal, the progressively corrected scan signal having a magnitude independent of spectral reflectance from a background near a target. One of the methods involves generating a baseline signal by sampling ... | 08/30/2005 |
| 6932273 | Method and apparatus to prevent reporting multiple reads of optical coded items A scanner comprising a data reader integrated with a weigh scale includes a processor that recognizes specific types of optical codes. In a preferred embodiment, when a weighable item is read by the data reader, a fixed delay timer, which prevents multiple reporting... | 08/23/2005 |
| 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 electrical signal generated by the sensor and normalizing the electrical s... | 03/29/2005 |
| 6840453 | Optical scanning apparatus An optical scanning apparatus, such as a bar code scanner, for reading 360 degrees of, e.g., tray commodities. A first scanning pattern is emitted almost in the horizontal direction to an installation surface of the apparatus, and a second scanning pattern is emitte... | 01/11/2005 |
| 6783073 | Image input system An image input system includes a solid state image pickup device and a preprocessor for performing correlated double sampling amplification on an output of the image pickup device and outputting a video signal. The preprocessor has a correlated double sampling ampli... | 08/31/2004 |
| 6698658 | Method and apparatus to prevent reporting multiple reads of optical coded items A scanner comprising a data reader integrated with a weigh scale includes a processor that recognizes specific types of optical codes. In a preferred embodiment, when a weighable item is read by the data reader, a fixed delay timer, which prevents multipl... | 03/02/2004 |
| 6499663 | Image input system An image input system includes a solid state image pickup device and a preprocessor for performing correlated double sampling amplification on an output of the image pickup device and outputting a video signal. The preprocessor has a correlated double sam... | 12/31/2002 |
| 6491224 | Optical scanning apparatus An optical scanning apparatus, such as a bar code scanner, for reading 360 degrees of, e.g., tray commodities. A first scanning pattern is emitted almost in the horizontal direction to an installation surface of the apparatus, and a second scanning is pat... | 12/10/2002 |
| 6484944 | Optoelectronic device for acquiring images of planes, such as bar code symbols An optoelectronic device for acquiring images of planes, such as bar codes, includes a deflector for deflecting an incident beam emitted by a light source such as an oscillating or rotating cyclic polygonial deflector or mirror. A driver osscilates or rot... | 11/26/2002 |
| 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 circuit, a judging circuit, a scanner structure, a laser ... | 05/07/2002 |
| 6382511 | Methods and apparatus for digitizing and processing of analog barcode signals A system for digital barcode processing. A light reflected from a barcode is captured by a photodetector to produce a photocurrent. The photocurrent is converted to a voltage, amplified and filtered to produce a photovoltage. The photovoltage is different... | 05/07/2002 |
| 6176429 | Optical reader with selectable processing characteristics for reading data in multiple formats A multi-function optical reader comprises an photosensor, such as a charge-device (CCD), and signal conditioning and processing circuitry including separate channels for handling data in different formats. A bar code processing channel digitizes the scan ... | 01/23/2001 |
| 6082621 | Interface between threshold processing digitizer for bar code reader A multi-bit digitizer (30) for a barcode reader detects the presence of edges of a scanned barcode symbol, and also measures the strength of each detected edge. A polarity or edge direction signal (8) indicates the direction of each detected edge, and a t... | 07/04/2000 |
| 6073850 | Optical reader for information pattern representing coded data A casing of an optical reader comprises a reading head and a handle. The reading head includes a frame portion having a bottom opening constituted as a parallelogram. The optical reader comprises an angular speed sensor. The optical reading is controlled ... | 06/13/2000 |
| 6032865 | 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... | 03/07/2000 |
| 5925869 | Multiple-input, mixed-type bar code processor with single decoder A multiple-input, mixed-type bar code processor, comprising: a plurality of retriggerable pulse generators, each having data inputs coupled to sources of potential representing fixed logic levels and each having at least one of a clear and a reset input c... | 07/20/1999 |
| 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 signal are obtained... | 07/13/1999 |
| 5910651 | Method and apparatus for image nonlinearity compensation in scanning systems A method and apparatus for use in improving the accuracy of scanning systems is disclosed and claimed. Systems such as internal drum photoplotters include a raster scanner responsive to control signals for advancing relative to a substrate an optical beam... | 06/08/1999 |
| 5773809 | Optical code reading apparatus An apparatus for optically reading a code pattern, made up of numerous code elements, if provided. The apparatus includes a light receiving unit, a photometer and a controller. The light receiving unit includes a plurality of first pixels, charge transfer... | 06/30/1998 |
| 5686717 | Bar code symbol reading system with multi-port digital signal decoder A bar code symbol reading system having a laser scanner, and a multi-port digital signal decoder capable of decoding digital signals produced from various types of scanning devices including, for example, high-speed counter top scanners, low-speed hand-he... | 11/11/1997 |
| 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 profile signal is sampled by an analog-to-digital converter, ... | 05/27/1997 |
| 5569900 | Method and optical scanning apparatus for the identification of a code consisting of sequential light and dark fields The invention relates to an optical scanning apparatus for the identification of a code (11) consisting of sequential light and dark fields which respectively form modules (16, 17, 18, 19, 20, 21, 22) put together from an upwardly restricted integral mult... | 10/29/1996 |
| 5495096 | Multi-focus optical device A multi-focus optical sensing device for use in bar code scanners, photoelectric sensors and the like is disclosed. To extend the range of detection along the optical axis, without increasing the detection time, the focal point of the light beam is caused... | 02/27/1996 |
| 5477042 | 2-D bar code scanner/decoder having a redundancy canceller Hand-held devices are provided for both scanning and decoding coded images such as two-dimensional bar codes. A linear scanning array of image sensing elements in the scanner/decoder provides image data with pixel-to-pixel synchronism, but lacking scan-to... | 12/19/1995 |
