BigPatents India

Methods and apparatus are disclosed for automatically selecting a video output (50)from among several video input sources (C1-C3). In one method, one or more audio sensors are associated with each video input source. Preferably, an audio sensor is positioned to receive audio singnals from directions that receive favorable coverage in the field of view of the associated video source. An autoselector (40) calculates audio scores for each of the audio sensors over short (e.g., 0.5 seconds) examination intervals. At each examination interval, the potential exists for different video source to be selected as the video output. The autoselector selects a video source based on the audio scores for an examination interval, as well as the recent lime-history of video source selection. For instance, if a new video source has just been selected, selection of a different source may be disabled for a few seconds. The time-history is also used to increase the probability that source selection varies in a seemingly-natural manner.