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
  • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
  • G11B20/1215—Formatting, e.g. arrangement of data block or words on the record carriers on cards
• • 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
• • 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
  • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
  • G11B20/1816—Testing

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Signal Processing For Digital Recording And Reproducing (AREA)
• Credit Cards Or The Like (AREA)
• Optical Recording Or Reproduction (AREA)

Applications Claiming Priority (1)

Publications (3)

Family

ID=24802252

Family Applications (1)

Country Status (9)

Families Citing this family (1)

Family Cites Families (1)

• 0
  • FR FR9616A patent/FR96239E/fr not_active Expired
• 1968
  • 1968-01-15 US US697716A patent/US3523287A/en not_active Expired - Lifetime
  • 1968-12-21 ES ES361749A patent/ES361749A1/es not_active Expired
• 1969
  • 1969-01-03 GB GB57758/68A patent/GB1210586A/en not_active Expired
  • 1969-01-09 DE DE1900935A patent/DE1900935C3/de not_active Expired
  • 1969-01-10 BE BE726751D patent/BE726751A/xx unknown
  • 1969-01-10 NL NL6900383.A patent/NL160962C/xx not_active IP Right Cessation
  • 1969-01-10 CH CH29369A patent/CH489084A/de not_active IP Right Cessation
  • 1969-01-13 SE SE00364/69A patent/SE365054B/xx unknown

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