Appeal No. 1999-0296 Page 18
Application No. 08/483,552
value of disparity at which this break-up occurs.
This will be the maximum parallax that the observer
can tolerate in the image at the far point.
A similar procedure can be adopted to find the
near point by separating the marks such that the
right image moves to the left and vice versa. The
single fused image now appears to advance in front of
the monitor screen and eventually this single image
will again break up when the disparity between the
two marks becomes too great for the observer to fuse
them.
The limits of tolerance of fusion thus obtained
can then be used in the computer memory in place of
the average value of human tolerance of fusion.
Col. 4, l. 59, - col. 5, l. 14.
Because Robinson adjusts disparity while adjusting
distance to an object to avoid the break up of the single
image into two images, we are persuaded that the teachings
from the applied prior art would have suggested the
limitations of “adjusting disparity while adjusting distance
to a target object to avoid loss of stereo effect.”
Therefore, we affirm the rejection of claim 5 as being obvious
over Robinson in view of Anderson.
CONCLUSION
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