Methods and apparatus for detecting on-screen media sources
US8019162B2 · kind B2 · utility
31Cited by
21References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2007 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Mar 14, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/47
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for detecting on-screen media sources are disclosed. An example method includes monitoring a region of interest of a video signal for a first image, comparing the first image to a stored image, and confirming the media device change when the stored image differs from the first image and is associated with a secondary criterion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.