Appeal No. 1999-2306
Application 08/639,284
encoding the uncompressed frames to produce a compressed
trickplay bitstream as claimed [brief, pages 4-7].
The examiner responds that Lane teaches that D, I, B
and P frames of video data are stored and processed. The
examiner also responds that the assembled I-frames of video in
Lane form an assembled bitstream as claimed. The examiner
also responds that Lane teaches the decoding of received data
packets and an encoder for producing a compressed trickplay
bitstream as claimed [answer, pages 7-10]. Appellants respond
that there is no disclosure in Lane that the extracted I-
frames are stored. Appellants also respond that decoding
packets of data is not the same as decoding a bitstream, and
the decoding/encoding in Lane occur after the trickplay
bitstream is formed rather than before as claimed [reply
brief, pages 3-5].
With respect to the first group of claims, we agree
with the position argued by appellants. We note that Lane
appears to have two separate teachings which are relied on by
the examiner. First, Lane describes a prior art fast play
technique in which the I-frames of a sequence of a video
bitstream are extracted and assembled in a sequence. Second,
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