CA2129126A1 - Method and Apparatus for Low Power Optical Sensing and Decoding of Data - Google Patents

Method and Apparatus for Low Power Optical Sensing and Decoding of Data

Info

Publication number
CA2129126A1
CA2129126A1 CA 2129126 CA2129126A CA2129126A1 CA 2129126 A1 CA2129126 A1 CA 2129126A1 CA 2129126 CA2129126 CA 2129126 CA 2129126 A CA2129126 A CA 2129126A CA 2129126 A1 CA2129126 A1 CA 2129126A1
Authority
CA
Canada
Prior art keywords
optical
carrier
optical data
data
decoding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2129126
Other languages
French (fr)
Other versions
CA2129126C (en
Inventor
Walter E. Pelton
David L. Emery
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hand Held Products Inc
Original Assignee
Walter E. Pelton
David L. Emery
Hand Held Products, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Walter E. Pelton, David L. Emery, Hand Held Products, Inc. filed Critical Walter E. Pelton
Publication of CA2129126A1 publication Critical patent/CA2129126A1/en
Application granted granted Critical
Publication of CA2129126C publication Critical patent/CA2129126C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10841—Particularities of the light-sensitive elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K2007/10495—Circuits for pulse forming, amplifying

Abstract

A portable optical data reader for optically sensing and decoding data, comprising a carrier oscillator (110) for producing a carrier signal at a predetermined frequency, an optical emitter (120) electrically connected to the carrier oscillator for emitting optical radiation in an optical path to an optical data carrier at the predetermined frequency, an optical detector (140) for detect-ing the emitted optical radiation returning from the optical data carrier thereby receiving the optical data and producing a detect-ed electrical signal responsive thereto, and a double balanced demodulator (150) electrically connected to the optical detector and the carrier oscillator for combining the detected radiation signal with the carrier signal to demodulate the optical data with the optical data carrier. A method of sensing and decoding optical data comprising the steps of oscillating a carrier signal, transmit-ting the carrier signal to an optical emitter, thereby illuminating the optical emitter adjacent optical data, reflectively sensing the illumination from the optical emitter, thereby receiving the optical data, and demodulating the optical data by use of the oscillat-ing carrier signal.
CA002129126A 1991-12-23 1992-12-21 Method and apparatus for low power optical sensing and decoding of data Expired - Fee Related CA2129126C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US812,769 1991-12-23
US07/812,769 US5281800A (en) 1991-12-23 1991-12-23 Method and apparatus for low power optical sensing and decoding of data

Publications (2)

Publication Number Publication Date
CA2129126A1 true CA2129126A1 (en) 1993-07-08
CA2129126C CA2129126C (en) 1996-09-17

Family

ID=25210574

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002129126A Expired - Fee Related CA2129126C (en) 1991-12-23 1992-12-21 Method and apparatus for low power optical sensing and decoding of data

Country Status (6)

Country Link
US (1) US5281800A (en)
EP (1) EP0803108A1 (en)
CN (1) CN1052318C (en)
AU (1) AU3330393A (en)
CA (1) CA2129126C (en)
WO (1) WO1993013496A1 (en)

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US8042740B2 (en) * 2000-11-24 2011-10-25 Metrologic Instruments, Inc. Method of reading bar code symbols on objects at a point-of-sale station by passing said objects through a complex of stationary coplanar illumination and imaging planes projected into a 3D imaging volume
US7594609B2 (en) * 2003-11-13 2009-09-29 Metrologic Instruments, Inc. Automatic digital video image capture and processing system supporting image-processing based code symbol reading during a pass-through mode of system operation at a retail point of sale (POS) station
US7128266B2 (en) 2003-11-13 2006-10-31 Metrologic Instruments. Inc. Hand-supportable digital imaging-based bar code symbol reader supporting narrow-area and wide-area modes of illumination and image capture
US7540424B2 (en) 2000-11-24 2009-06-02 Metrologic Instruments, Inc. Compact bar code symbol reading system employing a complex of coplanar illumination and imaging stations for omni-directional imaging of objects within a 3D imaging volume
US7490774B2 (en) * 2003-11-13 2009-02-17 Metrologic Instruments, Inc. Hand-supportable imaging based bar code symbol reader employing automatic light exposure measurement and illumination control subsystem integrated therein
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US7841533B2 (en) 2003-11-13 2010-11-30 Metrologic Instruments, Inc. Method of capturing and processing digital images of an object within the field of view (FOV) of a hand-supportable digitial image capture and processing system
US20070026266A1 (en) * 2005-07-19 2007-02-01 Pelton Walter E Distributed electrochemical cells integrated with microelectronic structures
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CN107749094A (en) * 2017-09-13 2018-03-02 陕西千山航空电子有限责任公司 A kind of non-contact cache logger

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Also Published As

Publication number Publication date
WO1993013496A1 (en) 1993-07-08
CA2129126C (en) 1996-09-17
CN1052318C (en) 2000-05-10
AU3330393A (en) 1993-07-28
CN1075371A (en) 1993-08-18
EP0803108A1 (en) 1997-10-29
US5281800A (en) 1994-01-25

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