GB1147575A - Data storage method and apparatus - Google Patents

Data storage method and apparatus

Info

Publication number
GB1147575A
GB1147575A GB6761/68A GB676168A GB1147575A GB 1147575 A GB1147575 A GB 1147575A GB 6761/68 A GB6761/68 A GB 6761/68A GB 676168 A GB676168 A GB 676168A GB 1147575 A GB1147575 A GB 1147575A
Authority
GB
United Kingdom
Prior art keywords
marks
data
mark
track
bit
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
GB6761/68A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1147575A publication Critical patent/GB1147575A/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
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
GB6761/68A 1967-03-28 1968-02-12 Data storage method and apparatus Expired GB1147575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62655367A 1967-03-28 1967-03-28

Publications (1)

Publication Number Publication Date
GB1147575A true GB1147575A (en) 1969-04-02

Family

ID=24510885

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6761/68A Expired GB1147575A (en) 1967-03-28 1968-02-12 Data storage method and apparatus

Country Status (5)

Country Link
US (1) US3508228A (enExample)
JP (1) JPS5526526B1 (enExample)
DE (1) DE1574650B2 (enExample)
FR (1) FR1562325A (enExample)
GB (1) GB1147575A (enExample)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631429A (en) * 1968-11-19 1971-12-28 Pacific Micronetics Inc System for reproducibly storing digital data
US3713123A (en) * 1969-12-18 1973-01-23 Gen Electric High density data recording and error tolerant data reproducing system
US3823397A (en) * 1970-05-07 1974-07-09 Centronics Data Computer Serial to parallel converter for binary signals of two different pulse widths
US3689903A (en) * 1970-10-16 1972-09-05 Honeywell Inc Voltage controlled oscillator with constrained period of frequency change
US3691553A (en) * 1970-12-01 1972-09-12 Gen Motors Corp Method and apparatus for decoding digital information
US3720927A (en) * 1971-01-25 1973-03-13 Redactron Corp Speed insensitive reading and writing apparatus for digital information
US3736581A (en) * 1971-07-02 1973-05-29 Honeywell Inc High density digital recording
US3887942A (en) * 1972-04-13 1975-06-03 Century Data Systems Inc A Div Tape speed compensation system
US4032979A (en) * 1972-12-26 1977-06-28 Digital Development Corporation Method and system for encoding and decoding digital data
US3828344A (en) * 1973-01-02 1974-08-06 Gte Information Syst Inc Double density to nrz code converter
US4003042A (en) * 1973-04-25 1977-01-11 De Staat Der Nederlanden, Ten Deze Vertegenwoordigd Door De Directeur-Generaal Der Posterijen, Telegrafie En Telefonie System for the transfer of two states by multiple scanning
US4032915A (en) * 1975-07-23 1977-06-28 Standard Oil Company (Indiana) Speed-tolerant digital decoding system
GB2079566B (en) * 1980-05-16 1985-01-09 Racal Recorders Ltd Data encoding and/or decoding
US7135213B2 (en) * 2003-07-31 2006-11-14 3M Innovative Properties Company Tearable elastic composite article and method of manufacture
EP2709578B1 (en) 2011-05-18 2017-01-04 3M Innovative Properties Company Tearable elastic composite articles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374475A (en) * 1965-05-24 1968-03-19 Potter Instrument Co Inc High density recording system

Also Published As

Publication number Publication date
DE1574650A1 (de) 1971-09-30
JPS5526526B1 (enExample) 1980-07-14
US3508228A (en) 1970-04-21
DE1574650B2 (de) 1977-02-03
FR1562325A (enExample) 1969-04-04

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