SE436944B - Optisk lesanordning for dokument vilka innehaller information i form av optiska markeringar - Google Patents

Optisk lesanordning for dokument vilka innehaller information i form av optiska markeringar

Info

Publication number
SE436944B
SE436944B SE7902465A SE7902465A SE436944B SE 436944 B SE436944 B SE 436944B SE 7902465 A SE7902465 A SE 7902465A SE 7902465 A SE7902465 A SE 7902465A SE 436944 B SE436944 B SE 436944B
Authority
SE
Sweden
Prior art keywords
light sensor
light
reading device
optical
document
Prior art date
Application number
SE7902465A
Other languages
English (en)
Swedish (sv)
Other versions
SE7902465L (sv
Inventor
D L Greenaway
Original Assignee
Landis & Gyr Ag
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 Landis & Gyr Ag filed Critical Landis & Gyr Ag
Publication of SE7902465L publication Critical patent/SE7902465L/xx
Publication of SE436944B publication Critical patent/SE436944B/sv

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544Methods 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
    • G06K7/10821Methods 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
    • G06K7/10831Arrangement of optical elements, e.g. lenses, mirrors, prisms
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/16Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being a hologram or diffraction grating
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00Printed matter
    • Y10S283/904Credit card

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Character Input (AREA)
  • Holo Graphy (AREA)
  • Facsimile Scanning Arrangements (AREA)
SE7902465A 1978-03-20 1979-03-19 Optisk lesanordning for dokument vilka innehaller information i form av optiska markeringar SE436944B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH299578A CH622896A5 (de) 1978-03-20 1978-03-20

Publications (2)

Publication Number Publication Date
SE7902465L SE7902465L (sv) 1979-09-21
SE436944B true SE436944B (sv) 1985-01-28

Family

ID=4246279

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7902465A SE436944B (sv) 1978-03-20 1979-03-19 Optisk lesanordning for dokument vilka innehaller information i form av optiska markeringar

Country Status (10)

Country Link
US (1) US4250393A (de)
JP (1) JPS6046470B2 (de)
BE (1) BE874955A (de)
CH (1) CH622896A5 (de)
DE (1) DE2814890C2 (de)
ES (1) ES478763A1 (de)
FR (1) FR2420794B1 (de)
GB (1) GB2016775B (de)
IT (1) IT1111936B (de)
SE (1) SE436944B (de)

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US6219015B1 (en) * 1992-04-28 2001-04-17 The Board Of Directors Of The Leland Stanford, Junior University Method and apparatus for using an array of grating light valves to produce multicolor optical images
US5629801A (en) * 1995-06-07 1997-05-13 Silicon Light Machines Diffraction grating light doubling collection system
US5661592A (en) * 1995-06-07 1997-08-26 Silicon Light Machines Method of making and an apparatus for a flat diffraction grating light valve
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US6215579B1 (en) 1998-06-24 2001-04-10 Silicon Light Machines Method and apparatus for modulating an incident light beam for forming a two-dimensional image
US6303986B1 (en) * 1998-07-29 2001-10-16 Silicon Light Machines Method of and apparatus for sealing an hermetic lid to a semiconductor die
US6872984B1 (en) 1998-07-29 2005-03-29 Silicon Light Machines Corporation Method of sealing a hermetic lid to a semiconductor die at an angle
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US6956878B1 (en) 2000-02-07 2005-10-18 Silicon Light Machines Corporation Method and apparatus for reducing laser speckle using polarization averaging
US6387723B1 (en) * 2001-01-19 2002-05-14 Silicon Light Machines Reduced surface charging in silicon-based devices
US7177081B2 (en) * 2001-03-08 2007-02-13 Silicon Light Machines Corporation High contrast grating light valve type device
US20030208753A1 (en) * 2001-04-10 2003-11-06 Silicon Light Machines Method, system, and display apparatus for encrypted cinema
US6707591B2 (en) * 2001-04-10 2004-03-16 Silicon Light Machines Angled illumination for a single order light modulator based projection system
US6865346B1 (en) 2001-06-05 2005-03-08 Silicon Light Machines Corporation Fiber optic transceiver
US6747781B2 (en) * 2001-06-25 2004-06-08 Silicon Light Machines, Inc. Method, apparatus, and diffuser for reducing laser speckle
US6782205B2 (en) * 2001-06-25 2004-08-24 Silicon Light Machines Method and apparatus for dynamic equalization in wavelength division multiplexing
US6646778B2 (en) * 2001-08-01 2003-11-11 Silicon Light Machines Grating light valve with encapsulated dampening gas
US6829092B2 (en) 2001-08-15 2004-12-07 Silicon Light Machines, Inc. Blazed grating light valve
US6639722B2 (en) * 2001-08-15 2003-10-28 Silicon Light Machines Stress tuned blazed grating light valve
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US8358317B2 (en) 2008-05-23 2013-01-22 Evans & Sutherland Computer Corporation System and method for displaying a planar image on a curved surface
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Also Published As

Publication number Publication date
ES478763A1 (es) 1979-05-16
DE2814890B1 (de) 1978-12-07
CH622896A5 (de) 1981-04-30
DE2814890C2 (de) 1979-08-09
IT1111936B (it) 1986-01-13
BE874955A (fr) 1979-07-16
GB2016775B (en) 1982-03-17
IT7921053A0 (it) 1979-03-16
FR2420794B1 (fr) 1985-11-29
GB2016775A (en) 1979-09-26
FR2420794A1 (fr) 1979-10-19
SE7902465L (sv) 1979-09-21
US4250393A (en) 1981-02-10
JPS6046470B2 (ja) 1985-10-16
JPS54128221A (en) 1979-10-04

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