Appeal No. 1999-1845
Application No. 08/659,132
invention because each memory stores depth values or color
values. This interpretation is the correct way to interpret
claims for purposes of determining patentability over the
prior art.
There is one recitation of independent claims 1, 5 and 8,
however, that has not been discussed by the examiner. Each of
these claims recites that a condition is assured "even when
color and depth values are overwritten into the same set of
address locations." Appellant argues that the concept of
color and depth values being overwritten requires that the
same physical memory be used to store both of these values,
and is not met by the two separate memories of Deering.
We agree with appellant. Although color and depth values
might be written into the same set of address locations in
Deering, they would not be overwritten into the same set of
address locations because color values and depth values in
Deering are stored in separate memories. We interpret the
phrase "overwritten into the same address locations" to
require that data be written into the same physical space and
not just the same address number. Independent claims 1, 5 and
8 require that the same memory store both the color values and
7
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