FR1541313A - System for reading data recorded on magnetic media - Google Patents

System for reading data recorded on magnetic media

Info

Publication number
FR1541313A
FR1541313A FR124750A FR124750A FR1541313A FR 1541313 A FR1541313 A FR 1541313A FR 124750 A FR124750 A FR 124750A FR 124750 A FR124750 A FR 124750A FR 1541313 A FR1541313 A FR 1541313A
Authority
FR
France
Prior art keywords
data recorded
reading data
magnetic media
media
magnetic
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
FR124750A
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.)
Sperry Corp
Original Assignee
Sperry Rand 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 Sperry Rand Corp filed Critical Sperry Rand Corp
Priority to FR124750A priority Critical patent/FR1541313A/en
Application granted granted Critical
Publication of FR1541313A publication Critical patent/FR1541313A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
    • G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR124750A 1966-10-27 1967-10-17 System for reading data recorded on magnetic media Expired FR1541313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR124750A FR1541313A (en) 1966-10-27 1967-10-17 System for reading data recorded on magnetic media

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US59000666A 1966-10-27 1966-10-27
FR124750A FR1541313A (en) 1966-10-27 1967-10-17 System for reading data recorded on magnetic media

Publications (1)

Publication Number Publication Date
FR1541313A true FR1541313A (en) 1968-10-04

Family

ID=26180084

Family Applications (1)

Application Number Title Priority Date Filing Date
FR124750A Expired FR1541313A (en) 1966-10-27 1967-10-17 System for reading data recorded on magnetic media

Country Status (1)

Country Link
FR (1) FR1541313A (en)

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