GB1486257A - Electronic computer with magnetic read-write unit - Google Patents

Electronic computer with magnetic read-write unit

Info

Publication number
GB1486257A
GB1486257A GB53148/74A GB5314874A GB1486257A GB 1486257 A GB1486257 A GB 1486257A GB 53148/74 A GB53148/74 A GB 53148/74A GB 5314874 A GB5314874 A GB 5314874A GB 1486257 A GB1486257 A GB 1486257A
Authority
GB
United Kingdom
Prior art keywords
skew
track
reference marks
bits
delay
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
GB53148/74A
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.)
Olivetti SpA
TIM SpA
Original Assignee
Olivetti SpA
Ing C Olivetti and C 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, Ing C Olivetti and C SpA filed Critical Olivetti SpA
Publication of GB1486257A publication Critical patent/GB1486257A/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
    • G06K7/01—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)
GB53148/74A 1973-12-28 1974-12-09 Electronic computer with magnetic read-write unit Expired GB1486257A (en)

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 (1)

Publication Number Publication Date
GB1486257A true GB1486257A (en) 1977-09-21

Family

ID=11314442

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53148/74A Expired GB1486257A (en) 1973-12-28 1974-12-09 Electronic computer with magnetic read-write unit

Country Status (5)

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

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 (https=) * 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
IT1000642B (it) 1976-04-10
IT7370878A1 (it) 1975-06-28
DE2459603A1 (de) 1975-07-10
FR2295489A1 (fr) 1976-07-16
US3972027A (en) 1976-07-27
FR2295489B1 (https=) 1980-04-18

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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

Effective date: 19921209