Methods and apparatus to distinguish a signal originating from a local device from a broadcast signal
US8553148B2 · kind B2 · utility
30Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2009 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Nov 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/44008
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus to distinguish a signal originating from a local device from a broadcast signal are disclosed. A disclosed example method includes analyzing a first predetermined characteristic of a video component of the audio-video signal to generate a first indication of the source of the audio-video signal, analyzing a second predetermined characteristic of an audio component of the audio-video signal to generate a second indication of the source of the audio-video signal, and determining if the audio-video signal was generated by a local device based on the first and second indications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.