Appeal No. 96-3640
Application No. 08/184,794
The Prior Art
Gage discloses a method and apparatus for removing
the background of a scene of an optical tracking system. As
illustrated by the steps 70-88 of Figure 5, an analog video
signal from a camera is converted to a 6-bit byte digital bit
stream, and top and bottom scanning lines representative of
the background are stored. Scanning lines containing target
data are compared to the stored lines and are converted to a
serial digital bit stream having a ZERO base line
representative of the background and variable width ONEs
representative of the target. The centroid of the target is
calculated and utilized to generate a tracking error between
the centroid and the camera boresight. See Figure 5, steps
94, 96.
The Rejection under 35 U.S.C. §103
Appellant's arguments with respect to the
independent claims appear at pages 3 and 4 of the brief and
are as follows:
Claim 1 includes "... said timing controller
generating said image area gate, storage area
gate, serial register gate signals, a plurality of display
timing signals, and determining timing relationships
therebetween in response to said vertical and
4
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