Patent ID: 8959556
Filing Date: 2015-02-17
Classification: G06F,H04H,H04N

Abstract:
1. A method for identifying the operating state of an audio-video (AV) device, the method comprising: 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; extracting, from the monitored messages, messages associated with an operation of the second AV device; analyzing a temporal sequence of the extracted messages for data associated with an operating state of the second AV device; when the temporal sequence is missing an expected message related to the operating state of the second AV device, sending a command to the AV network controller to request operating state information from the second AV device; and identifying the operating state of the second AV device by analyzing the extracted messages and a response from the second AV device including the operating state information.