Appeal No. 96-1628
Application No. 08/167,617
negative offset) is neither shown nor suggested in Asao." We
agree.
Asao describes (Translation, pages 5-6) reducing the
light permeability (or voltage) per region according to the
relative intensities for the regions. In other words, the
voltage at a very high intensity region will be reduced more
than at a slightly high intensity region. Asao does reduce
the light permeability (or voltage) a constant amount for all
picture elements within a given block. However, the claim
requires "selectively causing a reduction in the voltage
levels of said video image signals corresponding to said
respective areas" where the "respective areas" are those areas
in which the intensity exceeds a threshold value. In Asao,
the areas determined to have high incident intensity values
are blocks, and the voltage level from block to block varies
according to the intensity incident upon the block. If the
picture elements within a block are considered to be the
areas, then the reduction in voltage level is not
"corresponding to the respective areas", as the voltage level
is reduced for each picture element within the block
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