FR1575367A - - Google Patents

Info

Publication number
FR1575367A
FR1575367A FR1575367DA FR1575367A FR 1575367 A FR1575367 A FR 1575367A FR 1575367D A FR1575367D A FR 1575367DA FR 1575367 A FR1575367 A FR 1575367A
Authority
FR
France
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
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 filed Critical
Application granted granted Critical
Publication of FR1575367A publication Critical patent/FR1575367A/fr
Expired 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
FR1575367D 1967-08-21 1968-07-29 Expired FR1575367A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66192767A 1967-08-21 1967-08-21

Publications (1)

Publication Number Publication Date
FR1575367A true FR1575367A (fr) 1969-07-18

Family

ID=24655685

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1575367D Expired FR1575367A (fr) 1967-08-21 1968-07-29

Country Status (4)

Country Link
US (1) US3524047A (fr)
DE (1) DE1774619A1 (fr)
FR (1) FR1575367A (fr)
GB (1) GB1171720A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706887A (en) * 1971-03-04 1972-12-19 Ibm Optical card reader
GB1423779A (en) * 1972-02-14 1976-02-04 Hewlett Packard Co Photon isolators
US3819910A (en) * 1972-07-31 1974-06-25 Transaction Technology Inc Optical card reading system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975967A (en) * 1959-06-01 1961-03-21 Ibm Photo-sensing mechanism and circuit for punched data cards
US3443109A (en) * 1963-12-10 1969-05-06 Nat Res Dev Electro-optical reading device utilizing a pulsed semiconductor diode lamp
US3351744A (en) * 1963-12-30 1967-11-07 Honeywell Inc Synchronized document reader
US3321637A (en) * 1965-08-12 1967-05-23 Rca Corp Check circuit for optical reader employing threshold amplifier

Also Published As

Publication number Publication date
US3524047A (en) 1970-08-11
GB1171720A (en) 1969-11-26
DE1774619A1 (de) 1971-10-21

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Legal Events

Date Code Title Description
ST Notification of lapse