Methods and apparatus for transcoding progressive I-slice...

Details Methods and apparatus for transcoding progressive I-slice... Methods and apparatus for transcoding progressive I-slice...

2006-05-16

2006-05-16

Tran, Thai (Department: 2616)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C386S349000

Reexamination Certificate

active

07046910

ABSTRACT:
Progressive I-slice refreshed MPEG data streams are transcoded to I-frame based MPEG data streams to enable trick play modes on a television appliance, such as pause, scan forward, scan backward, jump, or still frame displays for use, e.g., in film indexing (chapters). A progressive I-slice refreshed MPEG data stream10having I-slices distributed over multiple P-frames is received by a television appliance300. The P-frames are decoded at decoder220to recover the I-slices which make up a complete I-frame. The recovered I-slices are assembled (e.g., by processor230) into a complete I-frame. The complete I-frame is encoded at an encoder250. A selected P-frame in the MPEG data stream is replaced with the encoded I-frame (e.g., via multiplexer255) to provide an encoded I-frame based data stream200. The I-frame based data stream is stored (e.g., in memory240) for trick play mode use.

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