In one of many possible embodiments, a method is provided for controlling trick mode playback speed. Frame indices associated with video frames of a digital video stream are monitored and a Group-of-Pictures (GOP) size is determined from the frame indices. One or more trick mode play speed parameters...http://www.google.com.hk/patents/US7720350?utm_source=gb-gplus-share專利 US7720350 - Methods and systems for controlling trick mode play speeds
