GB2008902B - Encoding and decoding of digital recordings - Google Patents

Encoding and decoding of digital recordings

Info

Publication number
GB2008902B
GB2008902B GB7844826A GB7844826A GB2008902B GB 2008902 B GB2008902 B GB 2008902B GB 7844826 A GB7844826 A GB 7844826A GB 7844826 A GB7844826 A GB 7844826A GB 2008902 B GB2008902 B GB 2008902B
Authority
GB
United Kingdom
Prior art keywords
decoding
encoding
digital recordings
recordings
digital
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
GB7844826A
Other versions
GB2008902A (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.)
EMI Ltd
Original Assignee
EMI Ltd
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 EMI Ltd filed Critical EMI Ltd
Priority to GB7844826A priority Critical patent/GB2008902B/en
Publication of GB2008902A publication Critical patent/GB2008902A/en
Application granted granted Critical
Publication of GB2008902B publication Critical patent/GB2008902B/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)
  • Signal Processing For Digital Recording And Reproducing (AREA)
GB7844826A 1977-11-24 1978-11-16 Encoding and decoding of digital recordings Expired GB2008902B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7844826A GB2008902B (en) 1977-11-24 1978-11-16 Encoding and decoding of digital recordings

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4891777 1977-11-24
GB7844826A GB2008902B (en) 1977-11-24 1978-11-16 Encoding and decoding of digital recordings

Publications (2)

Publication Number Publication Date
GB2008902A GB2008902A (en) 1979-06-06
GB2008902B true GB2008902B (en) 1982-05-12

Family

ID=26266357

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7844826A Expired GB2008902B (en) 1977-11-24 1978-11-16 Encoding and decoding of digital recordings

Country Status (1)

Country Link
GB (1) GB2008902B (en)

Also Published As

Publication number Publication date
GB2008902A (en) 1979-06-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee