FR1309562A - Improvements to elementary information recording systems in the binary number system - Google Patents

Improvements to elementary information recording systems in the binary number system

Info

Publication number
FR1309562A
FR1309562A FR882419A FR882419A FR1309562A FR 1309562 A FR1309562 A FR 1309562A FR 882419 A FR882419 A FR 882419A FR 882419 A FR882419 A FR 882419A FR 1309562 A FR1309562 A FR 1309562A
Authority
FR
France
Prior art keywords
information recording
binary number
number system
recording systems
elementary information
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
FR882419A
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.)
Potter Instrument Co Inc
Original Assignee
Potter Instrument Co Inc
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 Potter Instrument Co Inc filed Critical Potter Instrument Co Inc
Priority to FR882419A priority Critical patent/FR1309562A/en
Application granted granted Critical
Publication of FR1309562A publication Critical patent/FR1309562A/en
Priority claimed from US408948A external-priority patent/US3373415A/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
FR882419A 1961-02-01 1961-12-19 Improvements to elementary information recording systems in the binary number system Expired FR1309562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR882419A FR1309562A (en) 1961-02-01 1961-12-19 Improvements to elementary information recording systems in the binary number system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US8633861A 1961-02-01 1961-02-01
FR882419A FR1309562A (en) 1961-02-01 1961-12-19 Improvements to elementary information recording systems in the binary number system
US408948A US3373415A (en) 1961-02-01 1964-11-04 Unsymmetrical high density magnetic recording system

Publications (1)

Publication Number Publication Date
FR1309562A true FR1309562A (en) 1962-11-16

Family

ID=27246318

Family Applications (1)

Application Number Title Priority Date Filing Date
FR882419A Expired FR1309562A (en) 1961-02-01 1961-12-19 Improvements to elementary information recording systems in the binary number system

Country Status (1)

Country Link
FR (1) FR1309562A (en)

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