Code error detection and correction method and apparatus
US4541091A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1983 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Jun 9, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/15
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for detecting and correcting code errors in processing a digital signal such as a digital audio signal are disclosed. An error word correcting parity word generated from a plurality of data words is added to the plurality of data words to form a first frame, and the data words and the parity word of a plurality of different first frames are distributed in a second frame and a plurality of additional parity words for detecting and correcting error words in the second frame are added to the second frame to form a Reed-Solomon code. The code errors are detected and corrected using this code. A code error rate counter is provided, and when an output of the code error counter exceeds a predetermined count, the code error correction is inhibited for a predetermined time period or until the code error rate reaches a second predetermined code error rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.