Video coding device
US5760835A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1997 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Jul 9, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The prediction error value calculated by a motion estimating portion is used for selecting the frame or field orthogonal transform coding mode. The frame prediction error value EFr and the field prediction error value EFi are calculated by the motion estimating portion and entered into a comparator of an orthogonal transform mode selecting portion which in turn compares them with each other and generates an orthogonal transform mode selecting signal TC. The use of the prediction error values for selecting the orthogonal transform mode makes it possible to reduce the size of the necessary hardware and saves much time of data processing necessary for judgment of the orthogonal transform mode selection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.