Display processor for image data with non-constant pixel size for chromatic values
US4777481A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1987 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Mar 2, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention is embodied in a system comprising image memory and a display processor that automatically processes video data which alternate between having chrominance pixels of greater area than luminance pixels and having chrominance pixels of the same area as luminance pixels. Subsamples describing chrominance pixels of greater size are time-division-multiplexed with samples describing pixels in the image memory output when the former type of processing is done. Whichever format for video data is currently being used, the channel for reading subsamples from image memory to the display processor is used to transmit flag data controlling the mode of processing of video data performed by the video processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.