FR2295489A1 - Calculateur electronique avec unite de lecture-ecriture d'un support magnetique - Google Patents

Calculateur electronique avec unite de lecture-ecriture d'un support magnetique

Info

Publication number
FR2295489A1
FR2295489A1 FR7443046A FR7443046A FR2295489A1 FR 2295489 A1 FR2295489 A1 FR 2295489A1 FR 7443046 A FR7443046 A FR 7443046A FR 7443046 A FR7443046 A FR 7443046A FR 2295489 A1 FR2295489 A1 FR 2295489A1
Authority
FR
France
Prior art keywords
read
electronic computer
magnetic support
write unit
write
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.)
Granted
Application number
FR7443046A
Other languages
English (en)
Other versions
FR2295489B1 (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.)
Olivetti SpA
Original Assignee
Olivetti SpA
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 Olivetti SpA filed Critical Olivetti SpA
Publication of FR2295489A1 publication Critical patent/FR2295489A1/fr
Application granted granted Critical
Publication of FR2295489B1 publication Critical patent/FR2295489B1/fr
Granted 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
    • G06K7/01—Details
    • G06K7/016—Synchronisation of sensing process
    • G06K7/0163—Synchronisation of sensing process by means of additional timing marks on the record-carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
FR7443046A 1973-12-28 1974-12-27 Calculateur electronique avec unite de lecture-ecriture d'un support magnetique Granted FR2295489A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT70878/73A IT1000642B (it) 1973-12-28 1973-12-28 Calcolatore elettronico con unita di lettura scrittura di un suppor to magnetico

Publications (2)

Publication Number Publication Date
FR2295489A1 true FR2295489A1 (fr) 1976-07-16
FR2295489B1 FR2295489B1 (fr) 1980-04-18

Family

ID=11314442

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7443046A Granted FR2295489A1 (fr) 1973-12-28 1974-12-27 Calculateur electronique avec unite de lecture-ecriture d'un support magnetique

Country Status (5)

Country Link
US (1) US3972027A (fr)
DE (1) DE2459603A1 (fr)
FR (1) FR2295489A1 (fr)
GB (1) GB1486257A (fr)
IT (1) IT1000642B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316083A (en) * 1980-08-05 1982-02-16 Honeywell Information Systems Inc. Logic control system for a bistable magnetic wire badge reading system
GB0420443D0 (en) * 2004-09-14 2004-10-20 Ncr Int Inc A card reader

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952008A (en) * 1957-12-26 1960-09-06 Ibm Record actuated timing and checking means
GB1103385A (en) * 1964-03-02 1968-02-14 Olivetti & Co Spa Improvements in or relating to program controlled electronic computers
BE741352A (fr) * 1968-11-11 1970-04-16
US3665432A (en) * 1969-12-08 1972-05-23 Fujitsu Ltd Magnetic tape unit reading system
US3685015A (en) * 1970-10-06 1972-08-15 Xerox Corp Character bit error detection and correction
US3708783A (en) * 1971-06-18 1973-01-02 Ampex Interchannel time displacement correction method and apparatus
US3852810A (en) * 1972-03-17 1974-12-03 Gen Instrument Corp Self-clocking nrz recording and reproduction system
US3789379A (en) * 1973-02-23 1974-01-29 Honeywell Inc Compensation of reproduced signal by measuring a deviation of recorded reference signal

Also Published As

Publication number Publication date
GB1486257A (en) 1977-09-21
DE2459603A1 (de) 1975-07-10
US3972027A (en) 1976-07-27
FR2295489B1 (fr) 1980-04-18
IT1000642B (it) 1976-04-10

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Legal Events

Date Code Title Description
ST Notification of lapse