Device for correcting code error
US5381422A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 1993 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Jun 21, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/89
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device receives a code train including information codes and first and second error correction codes which were provided by using the information codes, and then corrects code errors of the information codes. A first correcting circuit corrects code errors of the information codes in accordance with the first error correction check code, and a second correcting circuit corrects code errors of the information codes in accordance with the second error correction check code by deciding whether uncorrectable code errors are present or not in each predetermined number of information codes and generating flag information. The flag information is amended using the first error correction check code, and code errors of the information codes are concealed on the basis of the amended flag information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.