Appeal No. 96-2591
Application 07/957,106
The invention pertains to a method of driving an active matrix display. Claim 1 is illustrative and
reads as follows:
1. A method of driving an electro-optical device of an active matrix structure comprising the
steps of:
converting an input analog signal into a numerical value of N-radix notation where N$3 or a
signal corresponding thereto; and
applying a plurality of voltage pulses having pulse heights and pulse widths based on said
numerical value or said signal corresponding thereto to a pixel of said electro-optical device,
wherein an average effective voltage of said voltage pulses is close to an arbitrary voltage; and
wherein both the said pulse widths and said pulse heights are varied so that the minimum width
of said pulses can be increased.
The references relied upon by the examiner as evidence of obviousness are:
Aoki et al. (Aoki) 4,775,891 Oct. 04, 1988
Morris et al. (Morris) 5,010,328 Apr. 23, 1991
Appellants’ admitted prior art at pages 1-4.
Claims 1-15 are provisionally rejected under the judicially created doctrine of obviousness-type
double patenting as being unpatentable over claims 1-13 of copending application Serial No.
07/957,107.
Claims 1-17 stand rejected under 35 U.S.C. § 103 as being unpatentable over the admitted
prior art (Figure 1A) in view of Aoki and Morris.
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