Appeal No. 97-1585
Application No. 08/397,514
and the 'off' positions to form the image on display screen
51." During normal operation, each mirror element in the
array of 1,280 by 800 mirror elements corresponds to one pixel
on the light-sensitive display screen (specification, page
20). When the disclosed invention is used under NTSC
broadcast standards (i.e., with an image resolution of
approximately 320 by 200 pixels), appellants control a sub-
array of 16 mirror elements (i.e., a 4 by 4 sub-array matrix)
for each pixel (specification, page 20). Appellants state
(specification, page 23) that "luminosity can be varied for
each pixel displayed by the system of the present invention by
rapidly modulating a constant source of light" (emphasis
added). According to appellants (specification, page 23):
The SLM of the present invention is capable of
being modulated at a very high rate. For example
the mirror cells have a switching time between off
and on of about 10 microseconds. Likewise the array
is able to accept control data at a very high rate .
. . . In the presently preferred embodiment of the
invention, the entire mirror cell array of the SLM
is able to be loaded and each cell switched during a
time period of 20 microseconds. (Emphasis added).
As a consequence of this high switching ability,
the SLM of the present invention can modulate each
pixel . . . . (Emphasis added).
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