HK15796A - Process and circuit for producing parity symbols - Google Patents
Process and circuit for producing parity symbolsInfo
- Publication number
- HK15796A HK15796A HK15796A HK15796A HK15796A HK 15796 A HK15796 A HK 15796A HK 15796 A HK15796 A HK 15796A HK 15796 A HK15796 A HK 15796A HK 15796 A HK15796 A HK 15796A
- Authority
- HK
- Hong Kong
- Prior art keywords
- shift register
- parity symbols
- retroactive
- circuit
- recorded
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/13—Linear codes
- H03M13/15—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
Landscapes
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Error Detection And Correction (AREA)
- Detection And Correction Of Errors (AREA)
- Amplifiers (AREA)
- Electrically Operated Instructional Devices (AREA)
- Design And Manufacture Of Integrated Circuits (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
Coding process. Reed Solomon coders are used to code audio signals which are recorded on a CD in accordance with the CD standard. First parity symbols are produced in a retroactive shift register. To obtain a simple circuit, the first parity symbols are shifted from the retroactive shift register into a storage shift register. After a given number of cycles, the direction of data flow in the storage shift register is reversed. During read-out of the parity symbols, the parity symbols calculated in the retroactive shift register (S1,..., Sn) are combined with those of the storage shift register (R1,..., Rn) in an adding device (A2). Process for coding audio signals which are recorded on a CD or on a magneto-optical disk in accordance with the CD standard.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3927527A DE3927527A1 (en) | 1989-08-21 | 1989-08-21 | METHOD FOR GENERATING PARITY SYMBOLS AND CIRCUIT ARRANGEMENT FOR IMPLEMENTING THE METHOD |
| PCT/EP1990/001164 WO1991003106A1 (en) | 1989-08-21 | 1990-07-16 | Process and circuit for producing parity symbols |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| HK15796A true HK15796A (en) | 1996-02-02 |
Family
ID=6387515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK15796A HK15796A (en) | 1989-08-21 | 1996-01-25 | Process and circuit for producing parity symbols |
Country Status (16)
| Country | Link |
|---|---|
| EP (1) | EP0489035B1 (en) |
| JP (1) | JP3167320B2 (en) |
| KR (1) | KR0160754B1 (en) |
| CN (1) | CN1026830C (en) |
| AT (1) | ATE113772T1 (en) |
| AU (1) | AU6068590A (en) |
| DD (1) | DD298173A5 (en) |
| DE (2) | DE3927527A1 (en) |
| ES (1) | ES2067038T3 (en) |
| FI (1) | FI108586B (en) |
| HK (1) | HK15796A (en) |
| HU (2) | HUT59774A (en) |
| MY (1) | MY105927A (en) |
| TR (1) | TR24854A (en) |
| TW (1) | TW197543B (en) |
| WO (1) | WO1991003106A1 (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3668632A (en) * | 1969-02-13 | 1972-06-06 | Ibm | Fast decode character error detection and correction system |
| US3638182A (en) * | 1970-01-02 | 1972-01-25 | Bell Telephone Labor Inc | Random and burst error-correcting arrangement with guard space error correction |
| JPS5832421B2 (en) * | 1976-09-10 | 1983-07-13 | 株式会社日立製作所 | Feedback shift register |
| FR2559916B1 (en) * | 1984-02-21 | 1989-02-24 | Constr Telephoniques | METHOD USED IN THE CONNECTION OF OPTICAL FIBERS TO CONSTITUTE AND STORE A RESERVE FIBER SECTION AND DEVICE RELATING THERETO |
| US4627686A (en) * | 1984-08-10 | 1986-12-09 | Siecor Corporation | Splicing tray for optical fibers |
| FR2581767B1 (en) * | 1985-05-10 | 1988-08-26 | Pouyet Sa Henri | CONNECTION POINT FOR FIBER OPTIC CABLES |
| US4777635A (en) * | 1986-08-08 | 1988-10-11 | Data Systems Technology Corp. | Reed-Solomon code encoder and syndrome generator circuit |
| US4840449A (en) * | 1988-01-27 | 1989-06-20 | American Telephone And Telegraph Company, At&T Bell Laboratories | Optical fiber splice organizer |
| GB8908399D0 (en) * | 1989-04-13 | 1989-06-01 | British Telecomm | Optical fibre back plane |
| US5100221A (en) * | 1990-01-22 | 1992-03-31 | Porta Systems Corp. | Optical fiber cable distribution frame and support |
| DE4235208A1 (en) * | 1992-10-20 | 1994-04-21 | Sel Alcatel Ag | Frame with inserts for guiding fiber optic cables |
-
1989
- 1989-08-21 DE DE3927527A patent/DE3927527A1/en not_active Withdrawn
-
1990
- 1990-07-16 AT AT90911613T patent/ATE113772T1/en not_active IP Right Cessation
- 1990-07-16 WO PCT/EP1990/001164 patent/WO1991003106A1/en active IP Right Grant
- 1990-07-16 AU AU60685/90A patent/AU6068590A/en not_active Abandoned
- 1990-07-16 KR KR1019920700396A patent/KR0160754B1/en not_active IP Right Cessation
- 1990-07-16 DE DE59007651T patent/DE59007651D1/en not_active Expired - Fee Related
- 1990-07-16 HU HU9200499A patent/HUT59774A/en unknown
- 1990-07-16 ES ES90911613T patent/ES2067038T3/en not_active Expired - Lifetime
- 1990-07-16 HU HU9200499A patent/HU213743B/en unknown
- 1990-07-16 JP JP51083990A patent/JP3167320B2/en not_active Expired - Fee Related
- 1990-07-16 EP EP90911613A patent/EP0489035B1/en not_active Expired - Lifetime
- 1990-07-18 TW TW079105938A patent/TW197543B/zh active
- 1990-08-17 TR TR90/0794A patent/TR24854A/en unknown
- 1990-08-20 DD DD90343534A patent/DD298173A5/en unknown
- 1990-08-20 CN CN90107061A patent/CN1026830C/en not_active Expired - Fee Related
- 1990-08-21 MY MYPI90001398A patent/MY105927A/en unknown
-
1992
- 1992-02-20 FI FI920745A patent/FI108586B/en active
-
1996
- 1996-01-25 HK HK15796A patent/HK15796A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04507332A (en) | 1992-12-17 |
| HU213743B (en) | 1997-09-29 |
| HU9200499D0 (en) | 1992-04-28 |
| WO1991003106A1 (en) | 1991-03-07 |
| FI108586B (en) | 2002-02-15 |
| EP0489035A1 (en) | 1992-06-10 |
| DD298173A5 (en) | 1992-02-06 |
| DE59007651D1 (en) | 1994-12-08 |
| ATE113772T1 (en) | 1994-11-15 |
| JP3167320B2 (en) | 2001-05-21 |
| MY105927A (en) | 1995-02-28 |
| KR920704434A (en) | 1992-12-19 |
| DE3927527A1 (en) | 1991-02-28 |
| CN1051993A (en) | 1991-06-05 |
| KR0160754B1 (en) | 1999-03-20 |
| AU6068590A (en) | 1991-04-03 |
| CN1026830C (en) | 1994-11-30 |
| TW197543B (en) | 1993-01-01 |
| FI920745A0 (en) | 1992-02-20 |
| HUT59774A (en) | 1992-06-29 |
| TR24854A (en) | 1992-07-01 |
| ES2067038T3 (en) | 1995-03-16 |
| EP0489035B1 (en) | 1994-11-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PF | Patent in force | ||
| PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20080716 |