Signal processor
US7502073B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2004 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Feb 13, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/42646
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal processor generates signals to reproduce video and audio from a received encoded digital signal. The signal processor includes: a first decoder for separating a first video signal and a first audio signal from a digital signal; a second decoder for separating a second video signal and a second audio signal from a digital signal; a video controller, which receives the first and second video signals, subjects a selected video signal to video processing; a clock generator for generating a clock signal of which the frequency corresponds to that of the first audio signal; an audio processor, which receives the second audio signal and the clock signal and converts the frequency of the second audio signal into that of the first audio signal; and an audio switch which outputs one of the two audio signals that is associated with the video signal being selected by the video controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.