KR950024200A - Error Correction Method and Apparatus for Digital Video Playback System - Google Patents

Error Correction Method and Apparatus for Digital Video Playback System Download PDF

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KR950024200A
KR950024200A KR1019940001749A KR19940001749A KR950024200A KR 950024200 A KR950024200 A KR 950024200A KR 1019940001749 A KR1019940001749 A KR 1019940001749A KR 19940001749 A KR19940001749 A KR 19940001749A KR 950024200 A KR950024200 A KR 950024200A
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data
error
decoding
error correction
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KR1019940001749A
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KR100224806B1 (en
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이윤우
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김광호
삼성전자 주식회사
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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/18Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1876Interpolating methods
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/18Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1833Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/18Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1866Error detection or correction; Testing, e.g. of drop-outs by interleaving
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/18Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1883Methods for assignment of alternate areas for defective areas

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Error Detection And Correction (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

본 발명은 디지탈 영상재생시스템의 에러정정에 관한 것으로, 특히 에러정정을 반복적으로 행함으로서 에러정정능력을 높이고 고화질의 화상을 얻기 위한 디지탈영상재생시스템의 에러정정방법 및 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to error correction of a digital image reproduction system, and more particularly, to an error correction method and apparatus for a digital image reproduction system for improving error correction capability and obtaining a high quality image by repeatedly performing error correction.

본 발명에 의하면, 종래의 에러정정장치에 적용된 부가정보의 양과 같은 상태에서 1회 에러정정한 데이타를 다시 한번 더 에러정정을 하므로서 종래의 에러정정장치에 비하여 일정한 부가정보량에 대한 에러정정율을 향상시킬 수 있는 잇점이 있다. 또한, 종래와 같은 에러정정율로 재생하는 경우에는 부가정보의 양을 줄이고도 동일한 효과를 얻을 수 있으므로서, 저장매체에 저장하는 데이타의 양을 증가시킬 수 있는 잇점이 있다.According to the present invention, the error correction rate is improved for a certain amount of additional information compared to the conventional error correction apparatus by performing error correction on the data once corrected once more in the same state of the amount of additional information applied to the conventional error correction apparatus There is an advantage to this. In addition, in the case of reproducing at the error correction rate as in the related art, the same effect can be obtained even by reducing the amount of additional information, and there is an advantage in that the amount of data stored in the storage medium can be increased.

Description

디지탈영상재생시스템의 에러정정방법 및 장치Error Correction Method and Apparatus for Digital Video Playback System

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

제3도는 본 발명에 의한 디지탈영상재생시스템의 에러정정방법의 흐름도,3 is a flowchart of an error correction method of a digital video reproduction system according to the present invention;

제4도는 본 발명에 의한 에러정정장치를 포함하는 디지탈영상재생시스템의 구성블럭도.4 is a block diagram of a digital image reproducing system including an error correction apparatus according to the present invention.

Claims (9)

영상데이타의 에러정정부호로서 내부호화하여 부가한 수직부가 정보와 외부호화하여 부가한 수평 부가정보로 구성된 적부호를 포함하는 재생신호에 대하여, 상기 에러정정부호에 따라 재생신호의 에러를 정정하여 원래의 영상데이타로 재생하기 위한 디지탈영상재생시스템에 있어서 상기 수직부가정보를 이용하여 재생신호의 에러를 정정하는 제1내복호화단계; 상기 수평부가정보를 이용하여 상기 제1내복호화단계를 거친 재생신호의 에러를 정정하는 제1외복호화단계; 상기 제1외복호화단계를 거친 재생신호를 재배열하여 내복호화할 수 있는 데이타순서로 변환하여, 상기 수직부가정보를 이용하여 재생신호의 에러를 정정하는 제2내복호화단계; 및 상기 제2내복호화단계를 거친 재생신호를 재배열하여 외복호화할 수 있는 데이타순서로 변환하여, 상기 수평부가정보를 이용하여 재생신호의 에러를 정정하는 제2외복호화단계를 포함함을 특징으로 하는 디지탈영상재생시스템의 에러정정방법.For a reproduction signal including an appropriate code consisting of information of a vertical portion added internally as an error correction code of video data and horizontal side information added by external encoding, the error of the reproduction signal is corrected according to the error correction code. A digital video reproducing system for reproducing video data of a first image, comprising: a first internal decoding step of correcting an error of a reproduction signal by using the vertical additional information; A first outer decoding step of correcting an error of a reproduction signal that has passed through the first inner decoding step by using the horizontal additional information; A second internal decoding step of rearranging the reproduced signals having undergone the first outer decoding step into a data order capable of internal decoding and correcting an error of the reproduced signal using the vertical additional information; And a second external decoding step of rearranging the reproduction signals having undergone the second internal decoding step into a data order capable of external decoding, and correcting an error of the reproduction signal by using the horizontal additional information. Error correction method of digital video playback system. 제1항에 있어서, 상기 제2내복호화단계의 재생신호 재배열은 상기 제1외복호화단계를 거친 데이타를 세로방향으로 먼저 증가하는 어드레스로 데이타를 버퍼에 기록한 다음, 가로방향으로 먼저 증가하는 어드레스로 버퍼의 데이타를 독출하는 과정으로 이루어짐을 특징으로 하는 디지탈영상재생시스템의 에러정정방법.2. The method of claim 1, wherein the reproduction signal rearrangement of the second inner decoding step includes writing data into a buffer to an address that first increases the data that has undergone the first outer decoding step in the vertical direction, and then increases the address in the horizontal direction first. Error correction method of a digital video playback system, characterized in that the process of reading the data of the buffer. 제1항에 있어서, 상기 제2외복호화단계의 재생신호 재배열은 상기 제2내복호화단계를 거친 데이타를 가로방향으로 먼저 증가하는 어드레스로 데이타를 버퍼에 기록한 다음, 세로방향으로 먼저 증가하는 어드레스로 버퍼의 데이타를 독출하는 과정으로 이루어짐을 특징으로 하는 디지탈영상재생시스템의 에러정정방법.2. The method of claim 1, wherein the reproduction signal rearrangement of the second outer decoding step includes writing data to a buffer with an address that first increases the data that has undergone the second inner decoding step in the horizontal direction, and then increases the address first in the vertical direction. Error correction method of a digital video playback system, characterized in that the process of reading the data of the buffer. 영상데이타의 에러정정부호로서 내부호화하여 부가한 수직부가 정보와 외부호화하여 부가한 수평부가정보로 구성된 적부호를 포함하는 재생신호에 대하여, 상기 에러정정부호에 따라 재생신호의 에러를 정정하여 원래의 영상데이타로 재생하기 위한 디지탈영상재생시스템에 있어서, 상기 수직부가정보를 이용하여 재생신호의 에러를 정정하는 제1내복호화기; 상기 수평부가정보를 이용하여 상기 제1내복호화된 재생신호의 에러를 정정하고 상기 에러정정된 데이타를 다시 상기 수직부가정보 및 상기 수평부가정보를 이용하여 에러를 정정하는 이중에러정정부를 포함함을 특징으로 하는 디지탈영상재생시스템의 에러정정장치.For a reproduction signal including an appropriate code consisting of information of a vertical portion added internally as an error correcting code of video data and horizontally added information added externally, the error of the reproduction signal is corrected according to the error correction code. A digital video playback system for playing back video data, comprising: a first internal decoder to correct an error of a playback signal using the vertical additional information; And a double error correction unit for correcting an error of the first inner-decoded playback signal using the horizontal additional information and correcting the error using the vertical additional information and the horizontal additional information. Error correction device of the digital video playback system characterized in that. 제4항에 있어서, 상기 이중에러정정부는 데이타를 기록 또는 독출하기 위한 저장수단; 내복호화 또는 외복화하기 의한 데이타 순서로 상기 저장수단에 데이타를 기록 및 독출하기 위한 어드레스제어수단; 상기 수평부가정보를 이용하여 재생신호의 에러를 정정하여 상기 저장수단으로 출력하는 외복호화부; 상기 수직부가정보를 이용하여 에러를 정정하여 상기 저장수단으로 출력하는 제2내복호화부를 구비하여, 상기 외복호화기의 출력데이타를, 상기 어드레스제어수단에 의하여 내복호화기 위한 데이타 순서로 상기 저장수단에 기록하고 상기 제2내복호화부로 독출하여, 상기 제2내복호화부에서 제2내복호화하고, 상기 제2외복호화부의 출력데이타를, 상기 어드레스제어수단에 의하여 외복호화하기 의한 데이타순서로 상기 저장수단에 기록하고 상기 외복호화부로 독출하여, 상기 외복호화부에서 제2외복호화함을 특징으로 하는 디지탈영상재생시스템의 에러정정장치.The apparatus of claim 4, wherein the double error correction unit comprises: storage means for recording or reading data; Address control means for recording and reading data into the storage means in order of data by internal decoding or external decoding; An outer decoding unit for correcting an error of a reproduction signal using the horizontal additional information and outputting the correction signal to the storage unit; A second internal decoding unit for correcting an error using the vertical additional information and outputting the error to the storage unit, wherein the output data of the external decoder is stored in the data order for internal decoding by the address control unit. Recorded in the second internal decoding unit, read out by the second internal decoding unit, second internal decoding by the second internal decoding unit, and outputting the output data of the second external decoding unit in the data order by external decoding by the address control means. And an external decoding unit for recording to the means, reading the data to the outer decoding unit, and performing a second outer decoding on the outer decoding unit. 제5항에 있어서, 상기 어드레스제어수단의 내복호화하기 위한 데이타 순서로 데이타를 기록 및 독출하는 수단은 가로방향으로 먼저 증가하는 어드레스로 데이타를 상기 저장수단에 기록하고, 세로방향으로 먼저 증가하는 어드레스로 상기 저장수단의 데이타를 독출함을 특징으로 하는 디지탈영상재생시스템의 에러정정장치.6. The apparatus according to claim 5, wherein the means for recording and reading data in a data order for internal decoding of said address control means writes data to said storage means at an address that first increases in the horizontal direction, and increases first in the vertical direction. An error correction apparatus for a digital video reproduction system, characterized by reading data of said storage means at an address. 제5항에 있어서, 상기 어드레스제어수단의 외복호화기 위한 데이타 순서로 데이타를 기록 및 독출하는 수단은, 세로 방향으로 먼저 증가하는 어드레스로 데이타를 상기 저장수단에 기록하고, 가로 방향으로 먼저 증가하는 어드레스로 상기 저장수단의 데이타를 독출함을 특징으로 하는 디지탈영상재생 시스템의 에러정정장치.6. The apparatus according to claim 5, wherein the means for recording and reading data in data order for external decoding of said address control means writes data to said storage means at an address that first increases in the longitudinal direction, and increases first in the horizontal direction. And an error correction apparatus for reading the data of the storage means at an address. 제5항에 있어서, 상기 외복호화부와 상기 제2내복호화부는 외복호화와 내복호화의 기능을 모두 가지는 하나의 장치로 구성하여, 제어신호에 따라 외복호화부 또는 제2내복호화부로 동작함을 특징으로 하는 디지탈영상재생시스템의 에러정정장치.6. The apparatus of claim 5, wherein the outer decoding unit and the second inner decoding unit are configured as one device having both functions of outer decoding and inner decoding, and operate as an outer decoding unit or a second inner decoding unit according to a control signal. An error correcting device for a digital video playback system. 제8항에 있어서, 상기 제어신호는 상기 어드레스제어수단이 상기 저장수단의 데이타 기록 및 출력 방향에 따라 발생하는 신호임을 특징으로 하는 디지탈영상재생시스템의 에러정정장치.10. The error correcting apparatus of claim 8, wherein the control signal is a signal generated by the address control means in accordance with the data recording and output direction of the storage means. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940001749A 1994-01-31 1994-01-31 Apparatus for error correction in a digital video reproducting system KR100224806B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100482939B1 (en) * 2000-12-12 2005-04-15 가부시끼가이샤 도시바 Data processing method using error-correcting code and an apparatus using the same method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100482939B1 (en) * 2000-12-12 2005-04-15 가부시끼가이샤 도시바 Data processing method using error-correcting code and an apparatus using the same method

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