Display device on/off detection methods and apparatus
US7882514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2006 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Dec 7, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4394
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Display device ON/OFF detection methods and apparatus are disclosed. An example method disclosed herein to determine whether a presentation device is ON or OFF comprises determining a plurality of metrics based on monitoring at least one output of the presentation device, wherein each metric in the plurality of metrics comprises a decision indicating an operating state of the presentation device, and combining the plurality of metrics to determine whether the presentation device is one of ON or OFF, wherein combining the plurality of metrics comprises at least one of weighting the plurality of metrics or determining a majority vote of the plurality of metrics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.