FR1161777A - Device for scanning punch cards or other documents - Google Patents

Device for scanning punch cards or other documents

Info

Publication number
FR1161777A
FR1161777A FR1161777DA FR1161777A FR 1161777 A FR1161777 A FR 1161777A FR 1161777D A FR1161777D A FR 1161777DA FR 1161777 A FR1161777 A FR 1161777A
Authority
FR
France
Prior art keywords
documents
scanning
punch cards
punch
cards
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
Other languages
French (fr)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of FR1161777A publication Critical patent/FR1161777A/en
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
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/081—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes electrostatic, e.g. by detecting the charge of capacitance between electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
FR1161777D 1955-10-22 1956-10-22 Device for scanning punch cards or other documents Expired FR1161777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI10805A DE1223184B (en) 1955-10-22 1955-10-22 Arrangement for dielectric scanning of recording media, especially punch cards

Publications (1)

Publication Number Publication Date
FR1161777A true FR1161777A (en) 1958-09-04

Family

ID=7185290

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1161777D Expired FR1161777A (en) 1955-10-22 1956-10-22 Device for scanning punch cards or other documents

Country Status (2)

Country Link
DE (1) DE1223184B (en)
FR (1) FR1161777A (en)

Also Published As

Publication number Publication date
DE1223184B (en) 1966-08-18

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