Method and arrangement for recording/reproducing compressed program information on a recording medium containing a plurality of programs
US5555229A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1994 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | Jul 7, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/65
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Pieces of leading compressed information, each of which corresponds to a predetermined number of blocks of each of a plurality of programs recorded on an optical disk, are successively read therefrom, and stored in a buffer memory in a compressed state as they are. Upon reproducing a certain program, the corresponding leading compressed information is read from the buffer memory, and reproduced after having been subjected to a decompressing process in an information-decompression processing circuit. The program is continuously reproduced by reading compressed information corresponding to the predetermined number of blocks following the leading compressed information from the optical disk and supplying the compressed information to the buffer memory. With this arrangement, it is possible to eliminate a slow switching operation in the case when programs are switched to start reproducing a different program.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.