FR1222556A - Improvements to magnetic recording devices - Google Patents

Improvements to magnetic recording devices

Info

Publication number
FR1222556A
FR1222556A FR782443A FR782443A FR1222556A FR 1222556 A FR1222556 A FR 1222556A FR 782443 A FR782443 A FR 782443A FR 782443 A FR782443 A FR 782443A FR 1222556 A FR1222556 A FR 1222556A
Authority
FR
France
Prior art keywords
magnetic recording
recording devices
devices
magnetic
recording
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
FR782443A
Other languages
French (fr)
Inventor
M Papo
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.)
Compagnie IBM France SAS
Original Assignee
Compagnie IBM France SAS
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 Compagnie IBM France SAS filed Critical Compagnie IBM France SAS
Priority to FR782443A priority Critical patent/FR1222556A/en
Application granted granted Critical
Publication of FR1222556A publication Critical patent/FR1222556A/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
    • G11B20/1415—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 conversion to or from pulse frequency coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR782443A 1958-12-23 1958-12-23 Improvements to magnetic recording devices Expired FR1222556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR782443A FR1222556A (en) 1958-12-23 1958-12-23 Improvements to magnetic recording devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR782443A FR1222556A (en) 1958-12-23 1958-12-23 Improvements to magnetic recording devices

Publications (1)

Publication Number Publication Date
FR1222556A true FR1222556A (en) 1960-06-10

Family

ID=8709554

Family Applications (1)

Application Number Title Priority Date Filing Date
FR782443A Expired FR1222556A (en) 1958-12-23 1958-12-23 Improvements to magnetic recording devices

Country Status (1)

Country Link
FR (1) FR1222556A (en)

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