Appeal No. 1997-1577 Page 10
Application No. 07/941,466
testing the block of terrain for combinations of elevation
levels to determine the need for and location of any contour
lines. We find that Dawson additionally discloses (col. 1,
lines 68 - col. 2, line 2; col. 5, lines 2 and 3) that the
real-time moving display of the map is displayed on a cathode
ray tube or similar display. Dawson is silent as to printing
a hard copy of the visual database.
The difference then between the claim and the prior art
is the generation of a hard copy of the navigational chart
which is correlated to the non-real-world visual database.
As acknowledged by the examiner (answer, page 5) Dawson
does not explicitly disclose generating a hard copy of the
navigational chart. We find that the prior art references
relied upon by the examiner fail to teach or suggest
generation of a hard copy of a navigational chart correlated
to the visual database. In the opinion of the examiner
(answer, pages 5 and 6)
it would have been obvious to one of ordinary skill
in the art at the time the invention was made to
include this feature because Dawson et al. disclose
at column 1, lines 24-25 that the generated map is
similar to paper maps and printing the generated map
would allow for use of the map in planes not equipped
with a display or as a reference for flight planning
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