Digital video data recording with outer-error-correction coding of trick-play data and apparatus for use therewith
US5778139A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | May 23, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/9261
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for recording/reproducing an ATV or DVB signal are provided. During recording, normal- and trick-play data are extracted from the signal transmitted with a transport packet structure. The extracted normal-play data are mapped into five sync blocks for every two transport packets and the normal-play data are then outer-error-correction-encoded after replacing the trick-play data having an SD-ECC structure with data of a predetermined pattern. The extracted trick-play data is then arranged in a video data region having the SD-ECC structure and the trick-play data are outer-error-correction-encoded by replacing the video auxiliary data having the SD-ECC structure with data of a predetermined pattern and mapping the result into a five-sync-block unit. The outer-error-correction-encoded normal- and trick-play data are rearranged in the video data region having the SD-ECC structure and then are inner-error-correction-encoded. During reproducing, the inner-error-correction-encoded normal- and trick-play data are inner-error-correction-decoded, the normal-play data are outer-error-correction-decoded by replacing the trick-play data with the pattern data used for enco…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.