Methods and apparatus for determining the operating state of audio-video devices
US8959556B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2008 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Nov 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4425
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for identifying the operating state of an audio-video (AV) device are described. Example methods and apparatus include monitoring messages transmitted via a data bus in a first AV device, wherein the data bus is communicatively coupled to a processor and an AV network controller of the first AV device, and wherein the AV network controller is further communicatively coupled to a second AV device external to the first AV device. The example method also involves extracting messages associated with an operation of the second AV device from the monitored messages, analyzing the extracted messages for data associated with an operating state of the second AV device, and sending a command to the AV network controller to request data missing from the extracted messages and associated with the operating state of the second AV device. Additionally, the example methods and apparatus include identifying the operating state of the second AV device by analyzing the extracted messages and a response from the second AV device associated with the command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.