Audio/video amplifier with the function of automatic turning on/off
US6690431B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2000 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Feb 2, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides an audio/video amplifier comprising an AV-signal receiver for receiving the signals from one or more program sources; a post-processing circuit connected with said AV-signal receiver for processing audio/video signals of said program source(s) or controlling the volume thereof; a microprocessor for controlling said AV-signal receiver and said post-processing circuit; an auxiliary power supply for powering said AV-signal receiver and said microprocessor; a main power supply controlled by the microprocessor for powering said post-processing circuit; and a signal identifying/comparing module arranged between said AV-signal receiver and said microprocessor for identifying and comparing input AV signals and outputting the result to the microprocessor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.