Method and receiving apparatus for decoding compressed frames
US5828412A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1995 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Dec 7, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There are frames of three types, namely intraframes (I0), predicted frames (P3, P6) and interpolated or bidirectional frames (B1, B2). Each bidirectional frame is decoded twice in succession, a first time (1.sup.1) for obtaining a first field (1e) and displaying it as its decoding proceeds, while the second field is obtained in the course of the same decoding operation but is not used, and subsequently a second time (1.sub.2) for obtaining the second field (1o) and displaying it progressively. As the bidirectional frames are decoded and displayed in lines of blocks, the lines of blocks which are being decoded are located progressively in a memory, each time in place of a line of blocks whose contents have been displayed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.