Method of reverse playback of a MPEG video stream

Details Method of reverse playback of a MPEG video stream Method of reverse playback of a MPEG video stream

2005-04-12

2005-04-12

Chevalier, Robert (Department: 2616)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C386S349000, C386S349000

Reexamination Certificate

active

06879770

ABSTRACT:
A method of decoding MPEG coded digital data, received in a forward reproduction order in least one Group Of Pictures (GOP) according to the MPEG standard, for producing decoded pictures for display in reverse playback order. Tho this purpose a limited number of decoded frames is temporarily stored while repeatedly same coded picture data is retrieved in a forward reproduction order to produce decoded picture data, employing the decoded temporarily stored picture data. This has as an advantage that the amount of temporarily storage capacity required, approximately equals the amount required for forward playback. In a specific embodiment, wherein the MPEG data cotains either NTSC GOPs or PAL GOPs, only temporarily storage capacity of four picture frames is required in case of reverse playback, compared with three in case of forward playback.

REFERENCES:
patent: 5959690 (1999-09-01), Toebes et al.
patent: 6078722 (2000-06-01), Kawamura et al.
patent: 0735780 (1996-10-01), None
patent: 0737011 (1996-10-01), None
patent: 1005226 (2000-05-01), None

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