FR72482E - Device for scanning punch cards or other documents - Google Patents

Device for scanning punch cards or other documents

Info

Publication number
FR72482E
FR72482E FR72482DA FR72482E FR 72482 E FR72482 E FR 72482E FR 72482D A FR72482D A FR 72482DA FR 72482 E FR72482 E FR 72482E
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 FR72482E publication Critical patent/FR72482E/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)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
FR72482D 1956-11-21 1957-11-18 Device for scanning punch cards or other documents Expired FR72482E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US864633XA 1956-11-21 1956-11-21

Publications (1)

Publication Number Publication Date
FR72482E true FR72482E (en) 1960-04-14

Family

ID=22198727

Family Applications (1)

Application Number Title Priority Date Filing Date
FR72482D Expired FR72482E (en) 1956-11-21 1957-11-18 Device for scanning punch cards or other documents

Country Status (2)

Country Link
FR (1) FR72482E (en)
GB (1) GB864633A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132242A (en) * 1960-12-23 1964-05-05 Ibm Record sensing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132242A (en) * 1960-12-23 1964-05-05 Ibm Record sensing apparatus

Also Published As

Publication number Publication date
GB864633A (en) 1961-04-06

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