Patent ID: 7376331
Filing Date: 2008-05-20
Classification: G06F,H04N,Y02D

Abstract:
1. A method for regulating power in a portable audio/video playback device electrically supplied by a power unit, said method comprising the steps of: detecting a present remaining power α in said power unit; reading an audio/video multimedia file or data and computing a playback time β of said file or data; computing an average power consumption rate γ of said portable audio/video playback device; and computing whether the present remaining power α is sufficient for a complete playback of said audio/video multimedia file or data, and, if the present remaining power α is not sufficient for a complete playback of said audio/video multimedia file or data, reducing an output level of a video or audio output signal so that the complete playback of said audio/video multimedia file or data is accomplished prior to exhaustion of the power supplied by said power unit.