KR940012358A - Digital Modulation / Demodulation Code Lookup Tables - Google Patents

Digital Modulation / Demodulation Code Lookup Tables Download PDF

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Publication number
KR940012358A
KR940012358A KR1019920020736A KR920020736A KR940012358A KR 940012358 A KR940012358 A KR 940012358A KR 1019920020736 A KR1019920020736 A KR 1019920020736A KR 920020736 A KR920020736 A KR 920020736A KR 940012358 A KR940012358 A KR 940012358A
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KR
South Korea
Prior art keywords
code
nrz
bit
modulation
bits
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Application number
KR1019920020736A
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Korean (ko)
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KR950003636B1 (en
Inventor
이창의
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배순훈
대우전자 주식회사
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Priority to KR1019920020736A priority Critical patent/KR950003636B1/en
Publication of KR940012358A publication Critical patent/KR940012358A/en
Application granted granted Critical
Publication of KR950003636B1 publication Critical patent/KR950003636B1/en

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    • 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

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

본 발명은 디지탈 데이타 변조 및 복조 부호장치에 관한 것으로서, CDS가 +1 또는 -1이며 0의 줄-길이가 3이하인 11비트의 NRZ-I의 부호 블럭만으로 룩업테이블을 구성하며, DSV의 상태 및 변조부호된 이전 NRZ-I 부호의 LSB에 따라 NRZ-I 부호의 MSB를 변경하여 8-11 변조부호가 가능하게 한다. 또한, 본 발명은 CDS가 -1 또는 +이고 0의 줄-길이가 3이하로 되는 11비트의 NRZ-I 부호들중 MSB를 제외한 나머지 10비트에 각각 대응하는 8비트의 데이타를 구비하는 룩업 테이블을 구성하여 10-8 복조부호가 가능하게 한 것이다.The present invention relates to a digital data modulation and demodulation coder, comprising a lookup table consisting only of 11-bit NRZ-I code blocks having CDS of +1 or -1 and a line-length of 0 or less. The MSB of the NRZ-I code is changed according to the LSB of the previous modulated NRZ-I code to enable 8-11 modulation. The present invention also provides a lookup table having 8 bits of data corresponding to the remaining 10 bits except for the MSB among 11 bits of NRZ-I codes having CDS of -1 or + and a line-length of 0 or less. It is possible to configure the 10-8 demodulation code.

Description

디지탈 변/복조 부호 룩업 테이블Digital Modulation / Demodulation Code Lookup Tables

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 룩업 테이블의 입출력 상태를 나타낸 블럭도,1 is a block diagram showing an input / output state of a lookup table according to the present invention;

제2도는 본 발명에 따른 변조부호 룩업 테이블을 이용한 변조부호 장치의 블럭도,2 is a block diagram of a modulation code apparatus using a modulation code lookup table according to the present invention;

제3도는 본 발명에 따른 부호 복조 룩업 테이블을 이용한 부호복조장치의 블럭도.3 is a block diagram of a code demodulation apparatus using a code demodulation lookup table according to the present invention.

Claims (3)

디지탈 데이타 변조부호 장치에 있어서, CDS가 -1이고 0의 줄-길이가 3이하로 되며, 8비트의 데이타 블럭들 각각에 대응하는 11비트의 NRZ-I 부호를 구비하며, 입력되는 8비트의 데이타 블럭을 대응하는 11비트의 NRZ-I 부호블럭으로 변조부호하여 출력하는 디지탈 변조부호 룩업 테이블.In the digital data modulation and coding apparatus, the CDS is -1 and the line-length of 0 is 3 or less, and has an 11-bit NRZ-I code corresponding to each of the 8-bit data blocks. Digital modulation code lookup table for modulating and outputting data blocks with corresponding 11-bit NRZ-I code blocks. 디지탈 데이타 변조부호 장치에 있어서, CDS가 +1이고 0의 줄-길이가 3이하로 되며, 8비트의 데이타 블럭들 각각에 대응하는 11비트의 NRZ-I 부호를 구비하며, 입력되는 8비트의 데이타 블럭을 대응하는 11비트의 NRZ-I 부호 블럭으로 변조부호하여 출력하는 디지탈 변조부호 룩업 테이블.In the digital data modulation and coding apparatus, CDS is +1 and 0 has a line-length of 3 or less, and has an 11-bit NRZ-I code corresponding to each of the 8-bit data blocks. Digital modulation code lookup table for modulating and outputting data blocks with corresponding 11-bit NRZ-I code blocks. 디지탈 데이타 변조부호 장치에 있어서, CDS가 ±1이고 0의 줄-길이가 3이하로 되는 11비트의 NRZ-I 부호들 중 MSB를 제외한 나머지 10비트에 각각 대응하는 8비트의 데이타들을 구비하며, 입력되는 10비트의 NRZ-I 부호를 대응하는 8비트의 데이타로 복조하는 디지탈 복조 부호 테이블.A digital data modulation apparatus comprising: 8 bits of data corresponding to the remaining 10 bits except for the MSB among 11 bits of NRZ-I codes having CDS of ± 1 and a line-length of 0 or less, and A digital demodulation code table for demodulating an input 10-bit NRZ-I code into corresponding 8-bit data. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920020736A 1992-11-05 1992-11-05 Digital modulation/demodulation look-up table KR950003636B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920020736A KR950003636B1 (en) 1992-11-05 1992-11-05 Digital modulation/demodulation look-up table

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920020736A KR950003636B1 (en) 1992-11-05 1992-11-05 Digital modulation/demodulation look-up table

Publications (2)

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KR940012358A true KR940012358A (en) 1994-06-23
KR950003636B1 KR950003636B1 (en) 1995-04-17

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KR1019920020736A KR950003636B1 (en) 1992-11-05 1992-11-05 Digital modulation/demodulation look-up table

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100580101B1 (en) * 1999-12-22 2006-05-12 주식회사 케이티 Bus invert coding/decoding method and device controlled most significant bit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100580101B1 (en) * 1999-12-22 2006-05-12 주식회사 케이티 Bus invert coding/decoding method and device controlled most significant bit

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Publication number Publication date
KR950003636B1 (en) 1995-04-17

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