Appeal No. 96-1249
Application 08/270,215
dependent claim 22 and the "about 10D to about 30D" range is
recited in dependent claim 23.
We note that because all of the appealed claims are
directed to an analog touch screen, they do not encompass the
matrix touch screen shown in appellants' Figure 8, which does
not use resistance measurements to determine the contact
point, as does an analog touch screen. Instead, it employs
(a) a first plurality of transparent ITO top conductors 31
running in the vertical direction, each having a respective
bus bar 33 and trace 35 and (b) a second plurality of
transparent ITO bottom conductors 32 running in the horizontal
direction, each having a respective bus bar 34 and trace 36
(Spec. at 10, lines 15-21).
When the top layer is depressed, suitable known coding
circuitry examines the traces to determine which top conductor
is making contact with which bottom conductor (Spec. at 10,
line 24 to p. 11, line 2).
The claims
Claim 19, the sole independent claim, reads as follows:
19. An analog touch screen, comprising:
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