Classifications

• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
  • G06K7/01—Details
  • G06K7/016—Synchronisation of sensing process
• • 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)
• Artificial Intelligence (AREA)
• Computer Vision & Pattern Recognition (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Synchronisation In Digital Transmission Systems (AREA)
• Compression, Expansion, Code Conversion, And Decoders (AREA)
• Signal Processing For Digital Recording And Reproducing (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=9160385

Family Applications (1)

Country Status (7)

Families Citing this family (1)

• 1975
  • 1975-09-24 FR FR7529259A patent/FR2326082A1/fr active Granted
• 1976
  • 1976-09-09 BE BE1007613A patent/BE845971A/xx unknown
  • 1976-09-17 LU LU75819A patent/LU75819A1/xx unknown
  • 1976-09-21 DE DE19762642422 patent/DE2642422A1/de active Pending
  • 1976-09-23 IT IT2753476A patent/IT1072410B/it active
  • 1976-09-23 DK DK429276A patent/DK429276A/da unknown
  • 1976-09-23 NL NL7610590A patent/NL7610590A/xx not_active Application Discontinuation

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