JPS55102949A - Data correction circuit - Google Patents

Data correction circuit

Info

Publication number
JPS55102949A
JPS55102949A JP1010379A JP1010379A JPS55102949A JP S55102949 A JPS55102949 A JP S55102949A JP 1010379 A JP1010379 A JP 1010379A JP 1010379 A JP1010379 A JP 1010379A JP S55102949 A JPS55102949 A JP S55102949A
Authority
JP
Japan
Prior art keywords
value
decoding
register
data
matrix
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
JP1010379A
Other languages
Japanese (ja)
Inventor
Tadashi Kojima
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1010379A priority Critical patent/JPS55102949A/en
Priority to GB8002535A priority patent/GB2042228B/en
Priority to US06/116,555 priority patent/US4320510A/en
Priority to DE19803003502 priority patent/DE3003502A1/en
Priority to FR8002113A priority patent/FR2448255A1/en
Publication of JPS55102949A publication Critical patent/JPS55102949A/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
    • G11B20/1813—Pulse code modulation systems for audio signals by adding special bits or symbols to the coded information

Abstract

PURPOSE:To attain LSI-implementation by a simple circuit and also to make high- speed operation possible by eliminating the need for ROM of large capacity by setting an initial value to a certain value and then by generating a decoding M matrix by a decoding M-matrix generator of a linear feedback shift register circuit. CONSTITUTION:A circuit which corrects an error word by a check code generated by adding a corresponding bit of a signal processed by a check code with an added corresponding bit of an information word and the auxiliary matrix of a polynomial is provided with linear feedback shift register 21 as a decoding M-matrix generator. To initial-value data setting part 22, a value needed to decode data am or a1 among data a1, a2...ag...am to be decoded or a value obtained by reversely shifting it by one by register 21 is set as the initial value of register 21, and a decoding signal is derived from this initial value or that one-shift behind. In a state where data ag is decoded, addition to the input of register 21 is done through exclusive OREX-OR1 and EX-OR2 for an error check.
JP1010379A 1979-01-31 1979-01-31 Data correction circuit Pending JPS55102949A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1010379A JPS55102949A (en) 1979-01-31 1979-01-31 Data correction circuit
GB8002535A GB2042228B (en) 1979-01-31 1980-01-25 Data correcting system
US06/116,555 US4320510A (en) 1979-01-31 1980-01-29 Error data correcting system
DE19803003502 DE3003502A1 (en) 1979-01-31 1980-01-31 DATA ERROR CORRECTION SYSTEM
FR8002113A FR2448255A1 (en) 1979-01-31 1980-01-31 DEVICE FOR CORRECTING ERRORS IN DIGITAL DATA

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1010379A JPS55102949A (en) 1979-01-31 1979-01-31 Data correction circuit

Publications (1)

Publication Number Publication Date
JPS55102949A true JPS55102949A (en) 1980-08-06

Family

ID=11740972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1010379A Pending JPS55102949A (en) 1979-01-31 1979-01-31 Data correction circuit

Country Status (1)

Country Link
JP (1) JPS55102949A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213131A (en) * 1984-03-05 1985-10-25 アムペックス　コーポレーシヨン Parity and syndrome generator for detecting and correcting error of digital communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213131A (en) * 1984-03-05 1985-10-25 アムペックス　コーポレーシヨン Parity and syndrome generator for detecting and correcting error of digital communication system

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