Recording/playback apparatus for digital video cassette recorder
US5897219A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1996 |
| Grant date | Apr 27, 1999 |
| Priority date | — |
| Expiry date | Oct 2, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording and playback apparatus for a digital video cassette recorder is provided with a data conversion unit for recording a compressed video signal in a more compressed format on a digital recording medium and a data inverse recording unit for playing out the recorded video signal. The data conversion unit includes a controller, encoder and multiplexer. The controller has for its inputs ID information decoded from the compressed video data signal by a decoder and a recording signal instructing the recording of the compressed video signal on a recording medium. At the start of picture recording the controller provides a selection signal to a multiplexer and a decoding instruction to an encoder to enable the encoder to recode the entire picture region of the decoded video data in an intraframe manner with a header which contains the decoding instruction information. The data inverse conversion unit includes a header decoder, a buffer controller, and a buffer. The buffer controller has as inputs the decoded instruction information output from the header decoder and a playback signal instructing the playback of compressed video data from the digital recording medium. Thus, both in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.