Appeal No. 2004-0123
Application No. 09/118,922 Page 7
reproduced after a predetermined time delay with respect to the
main picture (col. 1, lines 49-51). Fujita discloses that in
MPEG 2, data is reproduced synchronously, but that it is not
sufficient to consider only the synchronization among individual
pieces of data (col. 1, lines 25-37). Fujita further discloses
that for educational purposes, such as learning languages, video
data may be used to give questions to the users and sub-picture
data, superimposed on the data, may be used to give answers to
the users. In this case, it is significant to show answers
after, and not before or during, the time questions are given
(col. 1, lines 38-43).
From the disclosure of Fujita, we find that Fujita is not
related to operation in a fast play mode, is not directed to
skipping sub-picture data if the SCR time is greater than the
command executing start time, and delays the display of sub-
picture data, except in instances where a menu is displayed to
allow a user to select a lesson (col. 10, line 56 through col.
11, line 6). In addition, we find the Fujita is not directed to
the same problem as appellant, i.e., simultaneously decoding at
high speed video and sub-picture data by skipping the current
display control sequence if the updated system clock reference
value is greater than the command executing start time.
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