Recording and/or reproducing apparatus and method using key frame
US6801294B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2002 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Nov 21, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8042
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided an apparatus for recording and/or reproducing a moving picture using key frames by which the overall scenario of moving picture contents can be ascertained during a trick-play mode, and a method thereof. The recording apparatus includes a recording medium and recording apparatus for marking a representative picture position detected when there is a scene change among coded moving picture data streams, and recording the moving picture data streams on the recording medium. The scene change is determined based on distribution characteristics of macro blocks of frame units for the input coded moving picture data streams. The moving picture reproducing apparatus includes a recording medium having coded moving picture streams and a representative picture position detected when there is a scene change recorded thereon, and reproducing apparatus for searching for the representative picture position recorded on the recording medium and then reproducing a representative picture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.