MPEG decoder providing multiple standard output signals
US6539120B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1999 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Mar 15, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video decoder compliant with the Advanced Television Systems Standard (ATSC) includes circuitry which, when the decoder is operated in a first mode, decodes a Main Profile, High Level (MP@HL) image to produce a high-definition video output signal and decodes a Main Profile, Main Level (MP@ML) signal to produce a standard definition video signal. In addition, when the decoder is operated in a second mode, circuitry is used which generates a standard definition image from the MP@HL signal. The video decoder includes a frequency-domain filter to reduce the resolution of the MP@HL signal when the decoder is operated in the second mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.