Video-assisted audio signal processing system and method
USRE40054E1 · kind E1 · reissue
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2004 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Nov 19, 2024 |
Classification
- Technology area (CPC —)General
Abstract
A circuit arrangement for controlling audio signal transmissions for a communications system that includes a microphone and a video camera. The arrangement comprises a video processor configured and arranged to receive a video signal from the video camera, detect movement of an object in the video signal, and provide a motion-indicating signal indicating movement relative to the object. An audio processor is coupled to the video processor and is configured and arranged to modify the audio signal to be transmitted responsive to the motion-indicating signal. In another embodiment, a video signal processor is configured and arranged to receive a video signal from the video camera, detect mouth movement of a person and provide a mouth-movement signal indicative of movement of the person's mouth. An echo-cancellation circuit is coupled to the video signal processor and configured and arranged to filter from an audio signal provided by the microphone sound energy output by the speaker responsive to the mouth-movement signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.