EP2218034A4 - Signal processing for light beam sensing - Google Patents

Signal processing for light beam sensing

Info

Publication number
EP2218034A4
EP2218034A4 EP07864101A EP07864101A EP2218034A4 EP 2218034 A4 EP2218034 A4 EP 2218034A4 EP 07864101 A EP07864101 A EP 07864101A EP 07864101 A EP07864101 A EP 07864101A EP 2218034 A4 EP2218034 A4 EP 2218034A4
Authority
EP
European Patent Office
Prior art keywords
signal processing
light beam
beam sensing
sensing
light
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.)
Withdrawn
Application number
EP07864101A
Other languages
German (de)
French (fr)
Other versions
EP2218034A1 (en
Inventor
Norio Nakamura
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.)
Optoelectronics Co Ltd
Opticon Inc
Original Assignee
Optoelectronics Co Ltd
Opticon 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 Optoelectronics Co Ltd, Opticon Inc filed Critical Optoelectronics Co Ltd
Publication of EP2218034A1 publication Critical patent/EP2218034A1/en
Publication of EP2218034A4 publication Critical patent/EP2218034A4/en
Withdrawn legal-status Critical Current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
    • G06K7/10851—Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3084—Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
EP07864101A 2007-11-08 2007-11-08 Signal processing for light beam sensing Withdrawn EP2218034A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2007/084071 WO2009061319A1 (en) 2007-11-08 2007-11-08 Signal processing for light beam sensing

Publications (2)

Publication Number Publication Date
EP2218034A1 EP2218034A1 (en) 2010-08-18
EP2218034A4 true EP2218034A4 (en) 2011-01-26

Family

ID=40626035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07864101A Withdrawn EP2218034A4 (en) 2007-11-08 2007-11-08 Signal processing for light beam sensing

Country Status (4)

Country Link
EP (1) EP2218034A4 (en)
JP (1) JP2011503712A (en)
CN (1) CN101855638A (en)
WO (1) WO2009061319A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102811036A (en) * 2011-05-31 2012-12-05 中兴通讯股份有限公司 Method and device for digital filtering

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433593A2 (en) * 1989-11-20 1991-06-26 Symbol Technologies, Inc. Bar code symbol readers with edge enhancement

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5588171A (en) * 1978-12-27 1980-07-03 Toshiba Corp Bar-code reader
JPH06162246A (en) * 1992-11-19 1994-06-10 Nec Eng Ltd Bar code reader
JP3523705B2 (en) * 1995-03-16 2004-04-26 オリンパス株式会社 Information reproduction system
US7607581B2 (en) * 2003-11-13 2009-10-27 Metrologic Instruments, Inc. Digital imaging-based code symbol reading system permitting modification of system features and functionalities
AU2003228476A1 (en) * 2002-04-09 2003-10-27 The Escher Group, Ltd. Encoding and decoding data using angular symbology and beacons
JP4142352B2 (en) * 2002-06-14 2008-09-03 株式会社オプトエレクトロニクス Module for optical information reader
EP1714231B1 (en) * 2004-01-23 2011-09-07 Intermec IP Corporation Autofocus barcode scanner and the like employing micro-fluidic lens
JP4527411B2 (en) * 2004-01-30 2010-08-18 株式会社オプトエレクトロニクス Optical information reader
JP4197308B2 (en) * 2004-03-31 2008-12-17 株式会社オプトエレクトロニクス Optical information reader
US7216811B2 (en) * 2004-04-16 2007-05-15 Microscan Systems Incorporated Barcode scanner with linear automatic gain control (AGC), modulation transfer function detector, and selectable noise filter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433593A2 (en) * 1989-11-20 1991-06-26 Symbol Technologies, Inc. Bar code symbol readers with edge enhancement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2009061319A1 *

Also Published As

Publication number Publication date
WO2009061319A1 (en) 2009-05-14
EP2218034A1 (en) 2010-08-18
JP2011503712A (en) 2011-01-27
CN101855638A (en) 2010-10-06

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