GB1348681A - Optical read out arrangements - Google Patents

Optical read out arrangements

Info

Publication number
GB1348681A
GB1348681A GB2536171*A GB2536171A GB1348681A GB 1348681 A GB1348681 A GB 1348681A GB 2536171 A GB2536171 A GB 2536171A GB 1348681 A GB1348681 A GB 1348681A
Authority
GB
United Kingdom
Prior art keywords
record
outputs
amplifier
amplifiers
difference
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.)
Expired
Application number
GB2536171*A
Other languages
English (en)
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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
Priority claimed from JP45023826A external-priority patent/JPS5129383B1/ja
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of GB1348681A publication Critical patent/GB1348681A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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

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 Recording Or Reproduction (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
GB2536171*A 1970-03-20 1971-04-19 Optical read out arrangements Expired GB1348681A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2882670 1970-03-20
JP45023826A JPS5129383B1 (cg-RX-API-DMAC10.html) 1970-03-20 1970-03-20

Publications (1)

Publication Number Publication Date
GB1348681A true GB1348681A (en) 1974-03-20

Family

ID=26361246

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2536171*A Expired GB1348681A (en) 1970-03-20 1971-04-19 Optical read out arrangements

Country Status (3)

Country Link
US (1) US3694629A (cg-RX-API-DMAC10.html)
DE (1) DE2113089B2 (cg-RX-API-DMAC10.html)
GB (1) GB1348681A (cg-RX-API-DMAC10.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813540A (en) * 1973-03-26 1974-05-28 Ncr Circuit for measuring and evaluating optical radiation
JPS58130841A (ja) * 1982-01-29 1983-08-04 Nec Corp 発光マ−ク検知装置
US5682028A (en) * 1994-07-29 1997-10-28 Psc Inc. Circuitry for bar code scanners
US20080313239A1 (en) * 2007-06-14 2008-12-18 Daniel Byler Survey database method

Also Published As

Publication number Publication date
DE2113089C3 (cg-RX-API-DMAC10.html) 1974-04-25
DE2113089A1 (de) 1971-11-18
US3694629A (en) 1972-09-26
DE2113089B2 (de) 1973-08-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee