Appeal No. 96-1249
Application 08/270,215
This is an appeal under 35 U.S.C. § 134 from the
examiner's final rejection of claims 19-35, all of the pending
claims, under 35 U.S.C. § 103. We reverse.
The invention
The invention is an improved analog touch screen.
Appellants' Figures 1-3 show a prior art analog touch screen
including a top transparent layer 11 disposed over a bottom
transparent layer 12 (Spec. at 5, lines 22 to 24). As
depicted in Figures 2 and 3, in operation the top layer 11
acts as a resistive layer running in the vertical direction
between upper and lower bus bars 15 and 16, while the bottom
layer acts as a resistive layer running in the horizontal
direction between right-side and left-side bus bars 13 and 14
(Spec. at 5, line 24 to p. 6, line 3). As shown in Figure 4,
when a voltage V is applied via bus bars 13 and 14 across the
IN
bottom layer 12 and when top layer 11 is depressed to make
contact with bottom layer 12, a voltage V appears on the top
OUT
layer, which is left floating during this measurement,
representing the horizontal location of the contact point
(Spec. at 6, lines 10-26). The vertical location of the
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