Picture data recording/reproducing system for recording compressed picture data and reproducing recorded data with plural reproduction modes
US5371602A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1991 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Jul 17, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/85
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A moving picture data recording/reproducing system. In recording operation, moving picture data of a first frame row including frames selected from frames of an input picture signal for every predetermined number of frames are coded in accordance with an intra-frame coding method in which coding is completed within each frame, while picture data of a second frame row including the other frames are coded by an inter-frame coding method assuring a high compression ratio. The coded data resulting from the inter-frame coding and the intra-frame coding are multiplexed by interleaving them in the order of the frame numbers, the multiplexed data being then recorded on a recording medium. In reproducing operation, the multiplexed data are read out for reproducing the moving picture signal or alternatively the intra-frame coded data of the first frame row are selectively read out for reproducing the moving picture signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.