Appeal No. 2004-0123
Application No. 09/118,922 Page 5
for a disclosure of reproducing subtitles (or sub-picture data)
in a fast reproduction mode). In addition, the examiner asserts
that in Daum, the audio and video presentation stamps are
compared to determine a lag time between the video and audio.
Daum discloses a lag time of 16.67 ms, and teaches that if the
lag time is too long, to skip the video frame in order to keep
the video synchronized with the audio. The examiner takes the
position that it would have been obvious to set the lag threshold
at zero sec. The examiner maintains that if the lag threshold is
zero, a display control sequence would be skipped if the SCR
exceeded the command executing start time.
Appellant asserts (brief, pages 3-5) that Fujita is related
to reproducing sub-picture data with a predetermined time delay
after reproduction of the main picture, and that Fujita is
related to play back in a modified normal play mode and not in a
high speed mode. It is asserted that Daum is directed to
synchronizing audio and video by determining whether the video
lags the audio, and adjusting the time of the video presentation
to correspond with the audio, and that Daum skips or repeats
video frames to keep the audio and video synchronized. Appellant
argues that Daum is not directed to displaying picture data and
sub-picture data in a fast play mode. Appellant asserts that
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