Appeal No. 1997-1577 Page 8
Application No. 07/941,466
With regard to the appellants’ second point, the examiner
further states (answer, page 5) that “Dawson et al. does not
explicitly disclose that a hardcopy is produced.”
Dawson teaches (col. 1, lines 16-29) that in the prior
art, paper maps were provided to pilots to provide
topographical features of the terrain, but that it was a
burden for a pilot to try to calibrate the aircraft’s position
from a paper map on a pilot’s knee. Digital map systems were
created to generate a map similar to the format of a paper
map. The display automatically calibrated the aircrafts
position, and showed terrain elevation, as well as cultural
and linear features such as roads, railroads, and rivers.
Dawson’s invention (id. at lines 54-68) was to provide
improved virtual memory storage and access which permits
overlaying contour lines and for decluttering by selecting or
deselecting individual features from the map for display. The
data required to build the display is extracted from a
preprocessed database.
We find that the deselecting of data from the map for
display on a screen creates a filtering of the data. In
addition, by deselecting individual features of the map for
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