KR950007303A - Error Correction Device - Google Patents

Error Correction Device Download PDF

Info

Publication number
KR950007303A
KR950007303A KR1019930016839A KR930016839A KR950007303A KR 950007303 A KR950007303 A KR 950007303A KR 1019930016839 A KR1019930016839 A KR 1019930016839A KR 930016839 A KR930016839 A KR 930016839A KR 950007303 A KR950007303 A KR 950007303A
Authority
KR
South Korea
Prior art keywords
error
data
parity
unit
calculation unit
Prior art date
Application number
KR1019930016839A
Other languages
Korean (ko)
Inventor
김익현
Original Assignee
이헌조
주식회사 금성사
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 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019930016839A priority Critical patent/KR950007303A/en
Publication of KR950007303A publication Critical patent/KR950007303A/en

Links

Landscapes

  • Error Detection And Correction (AREA)

Abstract

본 발명은 콤팩트 디스크의 서브코드 영역에 기록된 영상 데이타의 에러 정정에 관한 것으로, 일반적으로 수신되는 팩 데이터는 3중에러 또는 2이상의 에러가 포함될 확률이 있기 때문에 기존 제안된 포맷내에서 최대한 정정능력을 높일 필요가 있고, P패리티에 의해서는 3중에러가 발생하였을 때에는 에러의 정정이 불가능하게 된다. 이에 따라, 본 발명의 목적은 상기와 같은 에러정정방법에 따르는 결함을 해결하기 위하여 에러정정의 순서를 기존의 방법과는 역순으로 먼저 Q패리티에 의해 심볼 0~3에 대한 에러를 정정하고 나서 P패리티에 의해 에러를 정정함으로써 3중에러의 정정이 가능하게 되는 에러 정정장치를 제공하는데 있다.The present invention relates to error correction of video data recorded in a subcode area of a compact disc. In general, since received pack data has a possibility of including triple errors or two or more errors, the maximum correction capability in the existing proposed format is possible. It is necessary to increase the value, and the P parity makes it impossible to correct an error when a triple error occurs. Accordingly, an object of the present invention is to correct the error for symbols 0 to 3 by Q parity in the reverse order of the conventional method in order to solve the defects according to the error correction method as described above. SUMMARY OF THE INVENTION An object of the present invention is to provide an error correcting apparatus capable of correcting triple errors by correcting errors by parity.

Description

에러정정장치Error Correction Device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제4도는 본 발명의 에러정정장치도4 is an error correction apparatus of the present invention

제5도는 본 발명에 따른 에러정정 타이밍도5 is an error correction timing diagram according to the present invention.

Claims (3)

콤팩트 디스크로부터의 1팩 데이터를 입력받아 신드롬(S1, S2)를 계산하고 Q패리티에 의해 심볼 0~3의 데이타에 발생한 1에러를 정정하는 1에러 정정부(10)와, 상기 1에러 정정부(10)에 의해 정정된 데이타를 입력받아 P패리티에 의해 2에러 위치, 에러값을 계산하여 2에러 정정을 수행하는 2에러 정정부(20)로 구성된 것을 특징으로 하는 에러정정장치.A one-error correction unit 10 that receives the one-pack data from the compact disc, calculates syndromes S 1 and S 2 , and corrects one error generated in the data of symbols 0 to 3 by Q parity; And an error correction unit (20) configured to receive the data corrected by the correction unit (10) and calculate a two-error position and an error value by P parity to perform two-error correction. 제1항에 있어서, 상기 1에러 정정부(10)는 입력된 데이타에서 신드롬(S1, S2)에서 1에러가 발생하였는지를 판단하는 Q신드롬 계산부(11)와, 입력된 데이터를 일시 저장하는 제1행(12)와, 상기 Q신드롬 계산부(11)에 의해 1에러가 발생된 것이 판정되면 Q패리티에 의해 에러 위치와 에러값을 계산하고 에러 정정을 수행하는 Q에러값 계산부(13)와, 상기 제1램(12)과 상기 Q에러값을 계산부(13)의 출력 데이터를 가산하여 심볼 0~3이 정정된 1팩의 데이터를 출력하는 순회코드 덧셈기(14)로 구성된 것을 특징으로 하는 에러정정장치.The method of claim 1, wherein the first error correction unit 10 temporarily stores the Q syndrome calculation unit 11 and the inputted data to determine whether one error occurs in syndromes S 1 and S 2 of the input data. If it is determined that 1 error is generated by the first row 12 and the Q syndrome calculation unit 11, the Q error value calculation unit calculates an error position and an error value by Q parity and performs error correction ( 13) and a circuit code adder 14 for outputting a pack of data in which symbols 0 to 3 are corrected by adding the output data of the first RAM 12 and the Q error value to the calculation unit 13. Error correction device, characterized in that. 제1항에 있어서, 상기 2에러 정정부(20)는 상기 1에러 정정부(10)로부터 심볼 0~3이 정정된 1팩의 데이타를 입력받아 신드롬(S1, S2, S3, S4) 연산에 의해 2에러가 발생하였는지를 판단하는 P신드롬 계산부(21)와, 2에러의 정정이 완료될때까지 입력된 데이터를 일시 저장하는 제2램(22)와, 상기 P신드롬 계산부(21)에 의해 1에러가 발생된 것이 판정되면 P패리티에 의해 에러 위치와 에러값을 계산하고 2에러 정정을 수행하는 P에러값 계산부(23)와, 상기 제2램(22)과 상기 P에러값을 계산부(23)의 출력 데이터를 가산하여 전체 심볼 0~24에 대하여 에러 정정된 1팩의 데이터를 출력하고, 에러가 정정불능일 때 에러정정불능 플래그를 출력하는 순회코드 덧셈기(14)로 구성된 것을 특징으로 하는 에러정정장치.The method of claim 1, wherein the second error correcting unit 20 receives one pack of data from which the symbols 0 to 3 are corrected from the first error correcting unit 10 to calculate syndromes S1, S2, S3, and S4. By the P syndrome calculation unit 21 for determining whether two errors have occurred by the second syndrome 22, and temporarily storing the input data until the correction of the two errors is completed, and the P syndrome calculation unit 21. If it is determined that one error has occurred, the P error value calculation unit 23 calculates an error position and an error value by P parity and performs two error correction, and calculates the second RAM 22 and the P error value. And a circuit code adder 14 for outputting one pack of data that is error corrected for all symbols 0 to 24 by adding the output data of the unit 23, and outputting an error correctable flag when the error is not correctable. Error correction device characterized in that. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930016839A 1993-08-28 1993-08-28 Error Correction Device KR950007303A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930016839A KR950007303A (en) 1993-08-28 1993-08-28 Error Correction Device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930016839A KR950007303A (en) 1993-08-28 1993-08-28 Error Correction Device

Publications (1)

Publication Number Publication Date
KR950007303A true KR950007303A (en) 1995-03-21

Family

ID=66817540

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930016839A KR950007303A (en) 1993-08-28 1993-08-28 Error Correction Device

Country Status (1)

Country Link
KR (1) KR950007303A (en)

Similar Documents

Publication Publication Date Title
SE8103835L (en) SET FOR ERROR CORRECTION
NL8200207A (en) METHOD OF ERROR CORRECTION FOR TRANSFERRING BLOCK DATA BITS, AN APPARATUS FOR CARRYING OUT SUCH A METHOD, A DECODOR FOR USE BY SUCH A METHOD, AND AN APPARATUS CONTAINING SUCH A COVER.
GB1290023A (en)
US5031181A (en) Error correction processing apparatus
KR950007303A (en) Error Correction Device
KR0141826B1 (en) Error correction method of compression data
KR970066877A (en) Sign error correction method and sign error correction device
KR920018735A (en) Error correction method and circuit of digital data
KR920013377A (en) Error correction decoding method and device
KR100246342B1 (en) Reed solomon error correction apparatus
JPS62245726A (en) Decoder for bch code
KR970013797A (en) Reed-Solomon Decoder
JPH0311827A (en) Error detection and correction circuit
JPS60101767A (en) Error correcting device
KR100425083B1 (en) Error correction code circuit for different kinds of optical disks
JP2586392B2 (en) Code error correction method
KR19980026491A (en) Digital signal system error and erasure correction device
KR20010011516A (en) Method for detecting uncoreectable error when using reed-solomon decoder
KR920018736A (en) Error correction method of compressed data
KR890003154B1 (en) R-s decoder circuit for error correction
JPH07114374B2 (en) Encoding device for shortened cyclic code
JP2676860B2 (en) Signal transmission method
KR940008283A (en) Reed-Solomon Error Correction Code System
KR100654017B1 (en) Method for correcting errors of digital data
JP2000124812A (en) Error-correcting decoding device

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application