Appeal No. 2004-1543 Page 9
Application No. 09/303,991
respective solid-state image pickup apparatuses are simultaneously displayed on a TV
monitor 127. Television cameras 121 to 124 each have a CCD solid-state image pickup
device and respectively output video signals Y1 to Y4 for displaying the images reduced
in size to ½ in the vertical and horizontal directions. Synchronizing signals SY1 to SY4
are supplied from a synchronizing signal generator 125 to the respective television
cameras 121 to 124 for synchronizing the respective operations and setting the timings
for vertical scanning and horizontal scanning at delays of V/2 and H/2. The video
signals Y1 to Y4 are compounded into a new video signal Ym by a composite video signal
generator 126 and the composite video signal Ym is supplied to a TV monitor 127.
Thus, the images which correspond to the respective video signals Y1 to Y4 are
simultaneously displayed on the reproducing screen of the TV monitor 127, as shown in
Figure 11.
In addition to the teachings of Cox and Higashitsutsumi, the examiner took
Official Notice that phase-locked loops are known to synchronize output clock signals by
the use of incoming reference signals.
After the scope and content of the prior art are determined, the differences
between the prior art and the claims at issue are to be ascertained. Graham v. John
Deere Co., 383 U.S. 1, 17-18, 148 USPQ 459, 467 (1966).
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