Compressed video transcoder
US6141447A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1996 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Nov 21, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Compressed video transcoding apparatus and methods are disclosed. One embodiment eliminates the need for reorder buffers by utilizing an encode order video decoder which decodes a first compressed video bit stream to provide a sequence of frames in an encode order suitable for direct encoding without further reordering. An encode order video encoder receives the sequence of frames in encode order and directly encodes the frames without further reordering to provide a second compressed video bit stream. Another embodiment utilizes a frame reorder device to reorder compressed frames of a first compressed video bit stream into an encode order such that a subsequent encoding operation after decoding the first compressed video bit stream can be performed without further reordering of the frames. The reordered compressed frames are decoded and applied in the encode order to an encoder which encodes the frames to provide a second compressed video bit stream. Another embodiment includes a decoder which decodes a first compressed video bit stream to provide a sequence of decoded frames. The sequence of decoded frames is applied to an encoder along with auxiliary information regarding the fi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.