JPS57191815A - Erroneous writing preventing method for crc arithmetic result - Google Patents

Erroneous writing preventing method for crc arithmetic result

Info

Publication number
JPS57191815A
JPS57191815A JP56075983A JP7598381A JPS57191815A JP S57191815 A JPS57191815 A JP S57191815A JP 56075983 A JP56075983 A JP 56075983A JP 7598381 A JP7598381 A JP 7598381A JP S57191815 A JPS57191815 A JP S57191815A
Authority
JP
Japan
Prior art keywords
crc
written
data
arithmetic result
error
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.)
Pending
Application number
JP56075983A
Other languages
Japanese (ja)
Inventor
Takatoshi Suzuki
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.)
Akai Electric Co Ltd
Original Assignee
Akai Electric Co 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 Akai Electric Co Ltd filed Critical Akai Electric Co Ltd
Priority to JP56075983A priority Critical patent/JPS57191815A/en
Publication of JPS57191815A publication Critical patent/JPS57191815A/en
Pending 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1806—Pulse code modulation systems for audio signals
    • G11B20/1809—Pulse code modulation systems for audio signals by interleaving

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Detection And Correction Of Errors (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Error Detection And Correction (AREA)

Abstract

PURPOSE:To reduce evil influence upon a following correcting function by writing the value, which shows that an error was detected previously, in the memory of a CRC. CONSTITUTION:Data L1n, R1n-Qn are extracted from a pseudo video signal and then written in a data memory over the arithmetic of a CRC. At this time, the ''BAD'' signal showing that an error was detected previously is written in the area where the arithmetic results of the CRC regarding the data L1n-Qn are to be written. This operation is repeated not less than once with regard to data R1n following the data L1n and in the same area of the memory of the CRC, the[1]showing an error was detected previously is written securely. At the point of time of a new arithmetic result of the CRC, the written[1]is rewritten into the value of the new arithmetic result of the CRC.
JP56075983A 1981-05-19 1981-05-19 Erroneous writing preventing method for crc arithmetic result Pending JPS57191815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56075983A JPS57191815A (en) 1981-05-19 1981-05-19 Erroneous writing preventing method for crc arithmetic result

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56075983A JPS57191815A (en) 1981-05-19 1981-05-19 Erroneous writing preventing method for crc arithmetic result

Publications (1)

Publication Number Publication Date
JPS57191815A true JPS57191815A (en) 1982-11-25

Family

ID=13592001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56075983A Pending JPS57191815A (en) 1981-05-19 1981-05-19 Erroneous writing preventing method for crc arithmetic result

Country Status (1)

Country Link
JP (1) JPS57191815A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209976A (en) * 1984-04-02 1985-10-22 Pioneer Electronic Corp Code error corrector
JPH03132974A (en) * 1989-10-18 1991-06-06 Hitachi Ltd Code error correction device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209976A (en) * 1984-04-02 1985-10-22 Pioneer Electronic Corp Code error corrector
JPH03132974A (en) * 1989-10-18 1991-06-06 Hitachi Ltd Code error correction device

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