Probabilistic methods and apparatus to determine the state of a media device
US8793717B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2008 |
| Grant date | Jul 29, 2014 |
| Priority date | — |
| Expiry date | Feb 1, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/44227
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Probabilistic methods and apparatus to determine the state of a media device are described. An example method to determine the state of a media device includes processing a first output signal from a first sensor measuring a first property of the media device to generate a first parameter value and processing a second output signal from a second sensor measuring a second property of the media device to generate a second parameter value. Next, the example method includes combining first conditional probabilities of the first parameter value and the second parameter value to determine a first state probability for the first state of the media device and combining second conditional probabilities of the first parameter value and the second parameter value to determine a second state probability for the second state of the media device. Then, determining the state of the media device by selecting the greater of the first state probability or the second state probability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.