METHODS AND APPARATUS FOR PROCESSING PROGRESSIVE I-SLICE REFRESHED MPEG DATA STREAMS TO ENABLE TRICK PLAY MODE FEATURES ON A DISPLAY DEVICE

摘要

A display device (100) with personal versatile recorder capabilities is provided which is capable of processing progressive I-slice refreshed MPEG data streams (115) to enable trick play mode features. The display device (100) comprises a receiver (120) for receiving a progressive I-slice refreshed MPEG data stream (115) having I-slices distributed over multiple P-frames. The display device (100) further comprises a syntax parser (125) for parsing the data stream to locate I-slices which make up an I-frame. A storage device (130) is provided for storing the data stream. The display device (100) also comprises an interface (135) for receiving a command for a trick play mode feature. A processor (150) associated with the syntax parser (125) recovers the located I-slices from the storage device (130) and assembles the recovered I-slices into one or more constructed I-frames (155). A decoder (175) is provided for decoding the constructed I-frames to enable the trick play mode features.