Appeal No. 1998-2565
Application 08/481,455
speed reduced with respect to the recording by a factor, but
at an increased head drum speed. However, the Examiner notes,
Amada teaches the concept of such reproduction at a tape speed
reduced, LP mode for example, but still at the same head drum
speed. (Answer-pages 4 and 5.) The Examiner states:
Therefore, it would have been obvious to
one of ordinary skill in the art at the time the
invention was made, having both the references of
Higuchi et al and Amada et al before him/her, to
increase the efficiency of the time-compressed
signal reproducing apparatus of Higuchi et al by
varying the tape speed of the recording medium while
keeping the head drum speed of rotation at the same
speed, as taught in Amada et al. in order to provide
a higher information transfer rate when handling
multiple kinds of signals containing different
amounts of information such as digital picture
signal and the HD digital picture signal at a fixed
number of drum revolutions that is compatible with
the long-time play mode of any of the multiple
signals. [Answer-page 5.]
Both of Appellants’ independent claims 1 and 7
require a combination of recording a time compressed signal
(at increased tape speed and increased head drum speed) and
reproducing (at reduced tape speed and increased head drum
speed). We have reviewed Higuchi and found no mention of
recording a time compressed signal, and thus no mention of
-5-
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007