Method and devices for digital video signal compression and multi-screen process by multi-thread scaling
US7133450B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2001 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Jan 21, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8042
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to methods and devices for compression and multi-screen process of digital video signals by multi-thread scaling. The method comprises. (a) a step to scale the resolutions of digital video signals; and (b) a step to compress or process for multi-screens the scaled digital video signals. The device comprises: multi-channel analog/digital converters, a compression FIFO; a multi-screen FIFO; a CPU which initializes each channel's analog/digital converter, and a video processor which transmits to the video memory. The processor for compression/multi-screen process may conduct the compression and multi-screen process sequentially from the compression FIFO and the multi-screen FIFO depending on the even/odd fields of the signals Thus, the method and device uses N analog/digital converters for the same N channels while providing the same function as the conventional system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.