Appeal No. 1999-2306
Application 08/639,284
The disclosed invention pertains to a method and
apparatus for generating trickplay video streams, such as fast
forward and fast reverse video streams, from a compressed
normal play bitstream.
Representative claim 1 is reproduced as follows:
1. A computer-implemented method for generating
trickplay streams from a compressed normal play bitstream,
comprising:
receiving a compressed normal play bitstream, wherein
said compressed normal play bitstream includes a plurality of
intracoded frames and a plurality of intercoded frames;
extracting said intracoded frames from said compressed
normal play bitstream, wherein said extracting includes
storing said intracoded frames in a storage memory;
assembling said intracoded frames to form an assembled
bitstream after said extracting;
decoding said assembled bitstream to produce a
plurality of uncompressed frames; and
encoding said plurality of uncompressed frames after
said decoding to produce a compressed trick play bitstream,
wherein said compressed trick play bitstream includes only a
subset of frames of said normal play bitstream.
The examiner relies on the following reference:
Lane et al. (Lane) 5,623,344 Apr. 22, 1997
(filed Aug. 19, 1994)
Claims 1-28 stand rejected under 35 U.S.C. § 102(e) as
being anticipated by the disclosure of Lane.
3
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007