JPS5644947A - Code error control system - Google Patents
Code error control systemInfo
- Publication number
- JPS5644947A JPS5644947A JP12015579A JP12015579A JPS5644947A JP S5644947 A JPS5644947 A JP S5644947A JP 12015579 A JP12015579 A JP 12015579A JP 12015579 A JP12015579 A JP 12015579A JP S5644947 A JPS5644947 A JP S5644947A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- code
- error
- roms
- words
- 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
Links
Landscapes
- Error Detection And Correction (AREA)
- Detection And Correction Of Errors (AREA)
Abstract
PURPOSE: To make it possible to correct and detect code errors independently, by dividing the original information sequence code into two or more and by generating and adding a check code to each divided group independently.
CONSTITUTION: ROMs are utilized in check code generating parts 12 and 22 and detecting circuits 14a and 24a. Since check code generating parts 12 and 22 must generate four-bit check codes from eight-bit information sequence codes, they require 26×4-bit ROMs. Detecting circuits 14a and 24a require 212×6-bit ROMs because total six bits including one bit to indicate presence or absence of the code error, one bit to indicate presence or absence of the single error or the double error, and four bits to indicate the bit position to be corrected for the single error are required as code error information from 12-bit error correction and detection codes. The number of words of ROMs are 256 words and 4K words respectively. This system is considerably economical in comparison with the case where the original information sequence code is not divided for error correction.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12015579A JPS5644947A (en) | 1979-09-20 | 1979-09-20 | Code error control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12015579A JPS5644947A (en) | 1979-09-20 | 1979-09-20 | Code error control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5644947A true JPS5644947A (en) | 1981-04-24 |
Family
ID=14779308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12015579A Pending JPS5644947A (en) | 1979-09-20 | 1979-09-20 | Code error control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5644947A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58127445A (en) * | 1982-01-25 | 1983-07-29 | Victor Co Of Japan Ltd | Error correction system |
| JPS5943647A (en) * | 1982-09-06 | 1984-03-10 | Hitachi Ltd | Error correcting, detecting and coding circuit |
| JPS6029071A (en) * | 1983-07-14 | 1985-02-14 | Matsushita Electric Ind Co Ltd | Error correction device |
| JPS6218832A (en) * | 1985-07-18 | 1987-01-27 | Fujitsu Ltd | Code error detection system |
| JPS6223231A (en) * | 1985-07-23 | 1987-01-31 | Fujitsu Ltd | Parity counter circuit |
| JPS63234633A (en) * | 1987-03-06 | 1988-09-29 | ブラウプンクト‐ヴエルケ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Data receiver |
-
1979
- 1979-09-20 JP JP12015579A patent/JPS5644947A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58127445A (en) * | 1982-01-25 | 1983-07-29 | Victor Co Of Japan Ltd | Error correction system |
| JPS5943647A (en) * | 1982-09-06 | 1984-03-10 | Hitachi Ltd | Error correcting, detecting and coding circuit |
| JPH0424893B2 (en) * | 1982-09-06 | 1992-04-28 | Hitachi Seisakusho Kk | |
| JPS6029071A (en) * | 1983-07-14 | 1985-02-14 | Matsushita Electric Ind Co Ltd | Error correction device |
| JPS6218832A (en) * | 1985-07-18 | 1987-01-27 | Fujitsu Ltd | Code error detection system |
| JPS6223231A (en) * | 1985-07-23 | 1987-01-31 | Fujitsu Ltd | Parity counter circuit |
| JPS63234633A (en) * | 1987-03-06 | 1988-09-29 | ブラウプンクト‐ヴエルケ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Data receiver |
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