Appeal No. 1998-0818
Application No. 08/319,143
We find that Chen teaches a system to remove aberrations
from an image. See column 8, lines 19 through 21. We find
that Chen teaches using both a "non-continuous phase encoded
filter" and an amplitude encoded filter which is statistically
similar to the reciprocal spatial frequency spectrum of
Fourier transform of the distortion function. Chen teaches
that the phase filter is controlled by the computer and that
the control data output from the computer is digital. See
column 5, lines 33 through 40. Accordingly, we find that the
values which can be taken on by the phase filter are discrete
and non-continuous. Chen teaches that the amplitude filter is
in the Fourier transform plane. See
column 3, lines 62 through 63. Further, Chen teaches that the
amplitude encoded filter is controlled to have an amplitude
corresponding to the reciprocal of the optical transfer
function of the system which created the image distortion.
See column 8, lines 50 through 57. Thus, we find that Chen
teaches that the amplitude encoded filter is statistically
similar to the reciprocal spatial frequency spectrum of
Fourier transform of the distortion function.
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