Method for compression and decompression of a video signal
US5835147A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1996 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Nov 15, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/537
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for transmitting a sequence of images is provided. The method indes the steps of previously defining that the sequence of images includes a plurality of frame segments and that each of the segments includes two types of images, update frames and intermediate frames, encoding and transmitting the sequence of images and decoding the transmitted sequence of images. When an update frame is present, the step of encoding and transmitting includes the step of compressing and transmitting the update frame. When an intermediate frame is present, the step of encoding and transmitting includes the step of generating and transmitting intermediate global motion parameters describing motion between the update frame and the intermediate frame. When the compressed update frame is received, decoding the transmitted sequence of images includes the step of decompressing the compressed update frame to produce a transmitted update frame. When the intermediate motion parameters are received, decoding the transmitted sequence of images includes the step of warping the transmitted update frame with the intermediate motion parameters thereby to produce a transmitted intermediate frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.