JPS5641514A - Decoding method - Google Patents

Decoding method

Info

Publication number
JPS5641514A
JPS5641514A JP11654679A JP11654679A JPS5641514A JP S5641514 A JPS5641514 A JP S5641514A JP 11654679 A JP11654679 A JP 11654679A JP 11654679 A JP11654679 A JP 11654679A JP S5641514 A JPS5641514 A JP S5641514A
Authority
JP
Japan
Prior art keywords
circuit
error
crc
interpolating
case
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.)
Granted
Application number
JP11654679A
Other languages
Japanese (ja)
Other versions
JPS6342343B2 (en
Inventor
Toru Inoue
Takahisa Oota
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP11654679A priority Critical patent/JPS5641514A/en
Publication of JPS5641514A publication Critical patent/JPS5641514A/en
Publication of JPS6342343B2 publication Critical patent/JPS6342343B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Detection And Correction Of Errors (AREA)
  • Error Detection And Correction (AREA)

Abstract

PURPOSE: To prevent the deterioration of reliability at the time of decoding, by deciding by means of the other CRC (Cyclic Redudancy Check), as well, and interpolating and correcting a data, when the bit information of rectangular arrangement to which 2 kinds of CRCs are provided is reproduced.
CONSTITUTION: The error correction based upon the erasing information by CRC C1 and the interpolation by the data before and after the error are executed through the syndrome ratio calculating circuit 102, the coincidence circuit 91, etc. conforming with the reproduction information of rectangular arrangement, formed by bXK2 bits from each track which has been subjected to synchronizing control and CRCs C1, C2. On the other hand, coincidence or noncoincidence of contents of the circuit 120 is decided by CRC C2 through the circuit 102, the memory circuit 120 and the coincidence circuit 121, and in case when there is noncoincidence even once, a data interpolating command is generated from the supervisory circuit 123. Accordingly, even in case when no erasing information is received, by which an error has been overlooked, the interpolating correction is executed by detecting the error in advance, and therefore the deterioration of reliability in case of decoding can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP11654679A 1979-09-10 1979-09-10 Decoding method Granted JPS5641514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11654679A JPS5641514A (en) 1979-09-10 1979-09-10 Decoding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11654679A JPS5641514A (en) 1979-09-10 1979-09-10 Decoding method

Publications (2)

Publication Number Publication Date
JPS5641514A true JPS5641514A (en) 1981-04-18
JPS6342343B2 JPS6342343B2 (en) 1988-08-23

Family

ID=14689784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11654679A Granted JPS5641514A (en) 1979-09-10 1979-09-10 Decoding method

Country Status (1)

Country Link
JP (1) JPS5641514A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161547A (en) * 1982-03-19 1983-09-26 Pioneer Electronic Corp Data decoding system
JPS62110331A (en) * 1985-11-08 1987-05-21 Matsushita Electric Ind Co Ltd Coding and decoding device
WO1991013496A1 (en) * 1990-03-02 1991-09-05 Mitsubishi Denki Kabushiki Kaisha Error-correcting encoding and decoding system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161547A (en) * 1982-03-19 1983-09-26 Pioneer Electronic Corp Data decoding system
JPH0442854B2 (en) * 1982-03-19 1992-07-14 Pioneer Electronic Corp
JPS62110331A (en) * 1985-11-08 1987-05-21 Matsushita Electric Ind Co Ltd Coding and decoding device
JPH0373183B2 (en) * 1985-11-08 1991-11-21 Matsushita Electric Ind Co Ltd
WO1991013496A1 (en) * 1990-03-02 1991-09-05 Mitsubishi Denki Kabushiki Kaisha Error-correcting encoding and decoding system
US5371750A (en) * 1990-03-02 1994-12-06 Mitsubishi Denki Kabushiki Kaisha Error-correction encoding and decoding system

Also Published As

Publication number Publication date
JPS6342343B2 (en) 1988-08-23

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