JPS63255876A - Method for detecting code error - Google Patents

Method for detecting code error

Info

Publication number
JPS63255876A
JPS63255876A JP9134187A JP9134187A JPS63255876A JP S63255876 A JPS63255876 A JP S63255876A JP 9134187 A JP9134187 A JP 9134187A JP 9134187 A JP9134187 A JP 9134187A JP S63255876 A JPS63255876 A JP S63255876A
Authority
JP
Japan
Prior art keywords
error
detecting
data
buffer memory
crc
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
JP9134187A
Other languages
Japanese (ja)
Inventor
Masatoshi Shinpo
Katsuhiro Kurosawa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9134187A priority Critical patent/JPS63255876A/en
Priority to US07/180,063 priority patent/US4949342A/en
Priority to DE88303249T priority patent/DE3887200T2/en
Priority to EP88303249A priority patent/EP0291167B1/en
Publication of JPS63255876A publication Critical patent/JPS63255876A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To attain the high speed of an error detecting processing and the error detection of data before the transfer of the data from a buffer memory to a host computer by using the read-solomon code of a byte unit as a CRC code for detecting an error and executing the CRC processing in parallel to the error correction of data.
CONSTITUTION: As the error detecting code of a recording and reproducing device equipped with an optical disk, a read-solomon code for detecting the error of a byte unit is used, the (m) pieces of data of the B area of a buffer memory 5 and a parity for detecting the error of the P pieces of byte units of the A area of the buffer memory 5 are divided with a generating function specified beforehand and the error is detected according to the fact whether a remainder is zero or non-zero. Thus, simultaneously when the error correction is completed, CRC (Cyclic Redundancy Check) checking is completed, the error can be detected at high speed and the error detection checking can be executed before the data are transferred from the buffer memory to the host computer.
COPYRIGHT: (C)1988,JPO&Japio
JP9134187A 1987-04-14 1987-04-14 Method for detecting code error Pending JPS63255876A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP9134187A JPS63255876A (en) 1987-04-14 1987-04-14 Method for detecting code error
US07/180,063 US4949342A (en) 1987-04-14 1988-04-11 Code error detecting method
DE88303249T DE3887200T2 (en) 1987-04-14 1988-04-12 Procedure for the detection of code errors.
EP88303249A EP0291167B1 (en) 1987-04-14 1988-04-12 A code error detecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9134187A JPS63255876A (en) 1987-04-14 1987-04-14 Method for detecting code error

Publications (1)

Publication Number Publication Date
JPS63255876A true JPS63255876A (en) 1988-10-24

Family

ID=14023718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9134187A Pending JPS63255876A (en) 1987-04-14 1987-04-14 Method for detecting code error

Country Status (1)

Country Link
JP (1) JPS63255876A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0596340A2 (en) * 1992-11-04 1994-05-11 Mitsubishi Denki Kabushiki Kaisha Error correction circuit
WO1996008874A1 (en) * 1994-09-16 1996-03-21 Cirrus Logic, Inc. Crc/edc checker system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61287078A (en) * 1985-06-13 1986-12-17 Matsushita Electric Ind Co Ltd Digital signal reproducing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61287078A (en) * 1985-06-13 1986-12-17 Matsushita Electric Ind Co Ltd Digital signal reproducing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0596340A2 (en) * 1992-11-04 1994-05-11 Mitsubishi Denki Kabushiki Kaisha Error correction circuit
EP0596340A3 (en) * 1992-11-04 1995-09-27 Mitsubishi Electric Corp Error correction circuit.
WO1996008874A1 (en) * 1994-09-16 1996-03-21 Cirrus Logic, Inc. Crc/edc checker system
US5592498A (en) * 1994-09-16 1997-01-07 Cirrus Logic, Inc. CRC/EDC checker system

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