Device and method for digital video transcoding
US5870146A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1997 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Jan 21, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/107
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A transcoding method and apparatus having an input former, a requantizer, a buffer, a prediction processor, and a composite switch. The transcoder has multiple feedback paths routed through the composite switch that are selected depending upon system requirements. The input former can further include an inverse quantizer, a summer, and a selector. The selector connects different signal paths in the transcoder depending upon the coding mode of the input bitstream. The buffer can include a frame buffer, a QP buffer, and a comparator for generating a control signal. Further features of the transcoding method and apparatus include a frequency weighted thresholder and a computation resource manager.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.