JPS5637748A - Coding method - Google Patents
Coding methodInfo
- Publication number
- JPS5637748A JPS5637748A JP11365379A JP11365379A JPS5637748A JP S5637748 A JPS5637748 A JP S5637748A JP 11365379 A JP11365379 A JP 11365379A JP 11365379 A JP11365379 A JP 11365379A JP S5637748 A JPS5637748 A JP S5637748A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- column
- row
- coding
- matrix
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Error Detection And Correction (AREA)
Abstract
PURPOSE:To increase the coding efficiency at the inferior transmission circuit and also securing high reliability, by converting the information word of the CRC coding method into the matrix and then giving the parity check code to the matrix. CONSTITUTION:For example, the undetected error rate PB is reduced by adding the internal coding of the information length R bit to the (n, R, 4) CRC (Cyclic Redundancy Check) coding of the code length (n) bit, the information R bit and the intercode distance 4. Then the R bit has constitution (R=aXb) of the row (a) and the column (b) each, and the data obtained by calculating the parity of each row direction of the row (a) and the column (b-1) up to the (b-1) column, i.e., the composite coding method having the horizontal parity code is adopted for the column (b) data of the final column. The figure shows the matrix in which the information word of (k) bit is set for the row (a) and the column (b) each, and the (r) bit is the CRC check bit, i.e., the redundant bit which means the residual obtained by dividing the equation aXb=k by the grown polynomial g(x).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11365379A JPS5637748A (en) | 1979-09-04 | 1979-09-04 | Coding method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11365379A JPS5637748A (en) | 1979-09-04 | 1979-09-04 | Coding method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5637748A true JPS5637748A (en) | 1981-04-11 |
JPS628057B2 JPS628057B2 (en) | 1987-02-20 |
Family
ID=14617718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11365379A Granted JPS5637748A (en) | 1979-09-04 | 1979-09-04 | Coding method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5637748A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS611146A (en) * | 1984-06-13 | 1986-01-07 | Yokogawa Hewlett Packard Ltd | Information communication equipment |
JPS61269438A (en) * | 1985-05-23 | 1986-11-28 | Sumitomo Electric Ind Ltd | Signal multiplexing receiver |
EP0229698A2 (en) * | 1986-01-10 | 1987-07-22 | Sony Corporation | Decoder for product codes and method of decoding such codes |
-
1979
- 1979-09-04 JP JP11365379A patent/JPS5637748A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS611146A (en) * | 1984-06-13 | 1986-01-07 | Yokogawa Hewlett Packard Ltd | Information communication equipment |
JPS61269438A (en) * | 1985-05-23 | 1986-11-28 | Sumitomo Electric Ind Ltd | Signal multiplexing receiver |
EP0229698A2 (en) * | 1986-01-10 | 1987-07-22 | Sony Corporation | Decoder for product codes and method of decoding such codes |
Also Published As
Publication number | Publication date |
---|---|
JPS628057B2 (en) | 1987-02-20 |
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