Appeal No. 97-2020
Application 07/957,107
problems of the conventional gradation displaying systems.
Appellants disclose that they overcome the problems by not
only varying a pulse width but also a pulse height. Appel-
lants disclose on page 8 of the specification that Figure 3
shows the Appellants' invention
in which the pulse height as well as the pulse width is var-
ied. Appellants disclose on page 9 of the specification that
by using the Appellants' method, the Appellants are able to
minimize the pulse width by an order of four times that of the
conventional systems. Appellants also disclose that the
method allows high speed operation and reduced power consump-
tion. Independent claim 14 is reproduced as follows:
14. A method of driving an active matrix display
with a plurality of gradation levels, wherein the maximum
number of gradation level is N where N = (1+2 + @@@ 2 ) I, k1 k
max max
and I each being a natural number, said method comprising the
steps of:
providing said active matrix display wherein a
plurality of transistors disposed on said on a liquid crystal
display respectively drive a plurality of pixels of the dis-
play;
3
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