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| Number | Title | Issue Date |
| 6426838 | Polarization dependant multi-focus optical system An optical element has a coating thereon to reflect energy, such as light, of a first polarization into a first focus zone and to allow energy, such as light, of a second polarization orthogonal to the first polarization, to reach a second optical element... | 07/30/2002 |
| 6311895 | Optical reader with condensed CMOS circuitry An optical or symbol reader including CMOS circuitry preferably integrated on a single chip. A CMOS optical reader chip comprises a CMOS imaging array having a plurality of pixels each with a dedicated pixel-site circuit. Charge is accumulated at each pix... | 11/06/2001 |
| 6296187 | CCD-based bar code scanner A bar code scanning system for a conveyor system includes a CCD camera that writes data to a memory. Data is stored in the memory as a two-dimensional image at periodic time frames based on scanning by the CCD camera. Data is written out of the memory by ... | 10/02/2001 |
| 6257490 | CCD-based bar code scanner A bar code scanning system for a conveyor system in which a first conveyor and a second conveyor are disposed apart from each other by a small gap region. A light emitting device is positioned in the gap underneath a top surface of the first and second co... | 07/10/2001 |
| 6230975 | Optical reader with adaptive exposure control An optical or symbol reader including CMOS circuitry preferably integrated on a single chip. A CMOS optical reader chip comprises a CMOS imaging array having a plurality of pixels each with a dedicated pixel-site circuit. Charge is accumulated at each pix... | 05/15/2001 |
| 6173894 | Optical reader with addressable pixels An optical or symbol reader including CMOS circuitry preferably integrated on a single chip. A CMOS optical reader chip comprises a CMOS imaging array having a plurality of pixels each with a dedicated pixel-site circuit. Charge is accumulated at each pix... | 01/16/2001 |
| 6155488 | Optical reader with adaptive exposure control An optical or symbol reader including CMOS circuitry preferably integrated on a single chip. A CMOS optical reader chip comprises a CMOS imaging array having a plurality of pixels each with a dedicated pixel-site circuit. Charge is accumulated at each pix... | 12/05/2000 |
| 6152368 | Optical reader with addressable pixels An optical or symbol reader including CMOS circuitry preferably integrated on a single chip. A CMOS optical reader chip comprises a CMOS imaging array having a plurality of pixels each with a dedicated pixel-site circuit. Charge is accumulated at each pix... | 11/28/2000 |
| 6137577 | Method and apparatus for measuring dimensions of objects on a conveyor A method and apparatus for measuring the length, width, and height of rectangular solid objects moving on a conveyor. The apparatus includes a light curtain, two laser triangulation range finders, and a pulse tachometer mounted on a frame around a conveyo... | 10/24/2000 |
| 6045044 | Method and apparatus for reducing bandwidth limited noise in bar code scanner A bar code scanner system includes a laser light source that periodically produces a light beam that is swept across a bar code label. The laser light source is periodically turned "on" and "off" according to a duty cycle. A detector produces a first elec... | 04/04/2000 |
| 6024284 | Wireless bar code scanning system A wireless scanning system for a bar code scanner and a personal computer. The bar code scanner sends raw bar code data via a wireless connection to the personal computer. The personal computer decodes the raw bar code data, and sends the digitized versio... | 02/15/2000 |
| 6006991 | Method and apparatus for reading both of standard and fluorescent bar codes A bar code label scanning system comprises a light source for producing a light beam at a first wavelength which is swept across a bar code. Light from the bar code is passed through a filter for attenuating light scattered from said bar code to approxima... | 12/28/1999 |
| 5991041 | Method and apparatus for measuring dimensions of objects on a conveyor A method and apparatus for measuring the length, width, and height of rectangular solid objects moving on a conveyor. The apparatus includes a light curtain, two laser triangulation range finders, and a pulse tachometer mounted on a frame around a conveyo... | 11/23/1999 |
| 5984186 | CCD-base bar code scanner A bar code scanning system for a conveyor system in which a first conveyor and a second conveyor are disposed apart from each other by a small gap region. A light emitting device is positioned in the gap underneath a top surface of the first and second co... | 11/16/1999 |
| 5979769 | Combination range laser scanner utilizing periodic range switching A combination range optical scanner includes a short distance laser and a long distance laser. A scan mirror is oscillated by a motor and scans a beam from one of the two lasers across a field of view. A controller turns the two lasers on and off such tha... | 11/09/1999 |
| 5959284 | Bar code reading and data collection unit with ultrasonic wireless data transmission A bar code scanner includes aseparate transmitter and receiver, each being able to ultrasonically transmit and receive data, respectively. The receiver transmits an acknowledgement signal when a protocol is received, and sends the acknowledgement signal t... | 09/28/1999 |
| 5923428 | Method and apparatus for measuring dimensions of objects on a conveyor A method and apparatus for measuring the length, width, and height of rectangular solid objects moving on a conveyor. The apparatus includes a light curtain, two laser triangulation range finders, and a pulse tachometer mounted on a frame around a conveyo... | 07/13/1999 |
| 5907147 | Non-contact actuated trigger apparatus for bar code laser scanner The system, which is especially suitable for use as a bar code scanner trigger which allows for hands-free scanner operation and non-contact triggering of the scanner by the operator, in one embodiment, comprises a switch and a switch actuator, with the s... | 05/25/1999 |
| 5883370 | Automated method for filling drug prescriptions An automated prescription filling system which assists the physician in providing a prescription and/or assists he pharmacist in filling a prescription in which the physician enters prescription information into his/her computer by which a bar coded presc... | 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 between voltages ... | 01/26/1999 |
| 5852286 | Method and apparatus for reducing bandwidth limited noise in bar code scanner A bar code scanner system includes a laser light source that periodically produces a light beam that is swept across a bar code label. The laser light source is periodically turned "on" and "off" according to a duty cycle. A detector produces a first elec... | 12/22/1998 |
| 5834750 | Bar code scanning system for automatically maintaining constant the amplitude of light reflected from a bar code A system for bar code reading and scanning is provided having automatic bar code signal size control. In the first embodiment of the system, a processor selects on successive scans of a bar code one of a plurality of different optical power levels from a ... | 11/10/1998 |
| 5825009 | Wireless bar code scanning system A wireless scanning system for a bar code scanner and a personal computer. The bar code scanner sends raw bar code data via a wireless connection to the personal computer. The personal computer decodes the raw bar code data, and sends the digitized versio... | 10/20/1998 |
| 5822343 | Operating and control system for lasers useful in bar code scanners In order to set the output optical power of a laser diode precisely and under digital control without expensive digital to analog conversion devices, a digital controller provides a sequence of pulses. A capacitor is charged by these pulses to produce a c... | 10/13/1998 |
| 5821721 | Motor control system especially for control of an optical scanner A light beam, which scans in opposite directions across a bar code, is controlled in velocity and scan angle by monitoring the voltage across a winding of a motor, such as one of the phase windings of a two phase stepper motor, which causes the beam to sc... | 10/13/1998 |
| 5814804 | Optical scanner activated with position locator A bar code scanning engine is disposed in a housing with a device that tracks the movement of the housing over a surface displaying symbols, such as bar codes, and provides an integrated bar code reading and locating assembly, commonly known as a mouse. W... | 09/29/1998 |
| 5804809 | Optical system for scanning and reading bar codes which is adapted to be configured in a hand held unit A unitary hand-held bar code scanner and reader produces an elliptical beam, oriented with its major axis along the direction of the bars, utilizing optics employing far field diffraction effects to shape the beam and maintain its elliptical aspect (lengt... | 09/08/1998 |
| 5796222 | System for driving and controlling the motion of an oscillatory electromechanical system especially suitable for use in an optical scanner A computerized control system for driving an rotor which can carry a laser or a beam deflecting mirror and is actuated by a coil thereon electromagnetically coupled to a fixed magnet or a stepper motor coil. The rotor can be part of an electromechanical o... | 08/18/1998 |
| 5786585 | Optical symbol (bar code) reading systems and devices A miniature scan engine module for bar code reading and data collection systems utilizes a light source 44 and a light collector 42, which in one embodiment, are flexurally supported on a platform 62 which reciprocates 88 on pivots defined by flexures 46,... | 07/28/1998 |
| 5786581 | Optical system for scanning and recording bar codes which is adapted to be configured in a hand held unit A unitary hand-held bar code scanner and reader produces an elliptical beam, oriented with its major axis along the direction of the bars, utilizing optics employing far field diffraction effects to shape the beam and maintain its elliptical aspect (lengt... | 07/28/1998 |
| 5767502 | Grip-conforming trigger mechanism for a hand-held bar code scanner An integrally molded trigger body has a mounting portion received through an opening in an upper portion of a handle of a hand-held bar code scanner and pivotably mounted in the handle under spring bias. The trigger body has a tongue portion extending out... | 06/16/1998 |
| 5750976 | Optical system for scanning and reading bar codes which is adapted to be configured in a hand held unit A unitary hand-held bar code scanner and reader produces an elliptical beam, oriented with its major axis along the direction of the bars, utilizing optics employing far field diffraction effects to shape the beam and maintain its elliptical aspect (lengt... | 05/12/1998 |
| 5726388 | Cable assembly for connecting peripheral devices to a terminal A cable assembly enables a plurality of cables to be connected to circuitry in a module enclosed in a housing from which flexible strain relief members extend which encase some of the cables. Two of these strain relief members define an area which is gene... | 03/10/1998 |
| 5717194 | Optical assembly for controlling beam size in bar code scanners In order to control the width of the scanning beam in the scanning direction over a significant range in front of the scanner, an optical assembly including a phase mask is utilized through which the beam passes after being configured into curved wavefron... | 02/10/1998 |
| 5714750 | Bar code scanning and reading apparatus and diffractive light collection device suitable for use therein. A miniature scan engine for scanning a beam of monochromatic (laser) light across a bar code and receiving return light at a detector that provides electrical signals representing the code, utilizes an integral assembly of a laser (laser diode), the detec... | 02/03/1998 |
| 5699161 | Method and apparatus for measuring dimensions of objects on a conveyor A method and apparatus for measuring the length, width, and height of rectangular solid objects moving on a conveyor. The apparatus includes a light curtain, two laser triangulation range finders, and a pulse tachometer mounted on a frame around a conveyo... | 12/16/1997 |
| 5696370 | Bar code scanning system for automatically calculating the optical power output levels of the light source A system for bar code reading and scanning is provided having automatic bar code signal size control. The scanner includes a processor which calculates, in response to a signal power level of the symbol which has been read, a first optical power level whe... | 12/09/1997 |
| 5692203 | Power up/power down for electronic hardware which conserves electric power A system especially suited for powering up and down electronic equipment operated to a power conservation mode, which conserves more power than other power conservation efforts. The system is operated by hitting any key of a keyboard which provides data e... | 11/25/1997 |
| 5686716 | Bar code void and spot discrimination A void and spot discrimination apparatus and method for successfully decoding bar code symbols having imperfections therein. A first and a second scan are performed, and a signal return is obtained, in which information is obtained related to a smallest s... | 11/11/1997 |
| 5684287 | Bar code scanner with tactile/vibratory signaling means A hand held bar code scanning device having a tactile feature in which the hand held device vibrates upon indication of a successful bar code scan. The bar code scanning device includes a scanning circuit, which outputs an acknowledge signal that indicate... | 11/04/1997 |
