Appeal No. 2000-0980
Application 08/763,733
The disclosed invention pertains to a video data decoding
method and apparatus for high-speed reproduction for decoding and
reproducing digital video data encoded according to a Moving
Picture Experts Group (MPEG) standard. More particularly, the
invention determines units of picture data which are to be
skipped based on predetermined picture size information contained
at a user data region of the encoded picture information.
Representative claim 1 is reproduced as follows:
1. A video data decoding apparatus for high-speed
reproduction for decoding and reproducing digital video data
encoded according to a Moving Picture Experts Group (MPEG)
standard and recorded on a recording medium, the video data
decoding apparatus comprising:
a microprocessor unit for analyzing input MPEG video data,
for judging whether each unit of picture data of said MPEG video
data corresponds to a picture which is to be decoded or to be
skipped during high-speed reproduction, and for controlling
decoding of units of said picture data which are judged to be
decoded and skipping reading of units of said picture data which
are judged to be skipped based on predetermined picture size
information, contained at a user data region corresponding to
each of said units of said picture which are judged to be
skipped;
a buffer for storing said input MPEG video data; and
decoding means for decoding video data read from said buffer
under control of said microprocessor unit.
The examiner relies on the following references:
Iwamura et al. (Iwamura) 5,305,113 Apr. 19, 1994
Okada et al. (Okada) 5,754,241 May 19, 1998
(filed Nov. 14, 1995)
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