Appeal No. 1999-2240
Application 08/909,349
prima facie case of obviousness as to this additional
limitation.
Fourth, Appellants argue that neither Best nor Satoh
teaches the limitation that the start position of the data
in one of the recording layers is substantially at the same
radial position as a final position of the data in the other
recording layer (Br17).
The Examiner's position is (EA5):
[Best] shows a multi layer disk wherein the layer[s]
alternate between clockwise and counter clockwise
(therefore the starting position on the first layer
have [sic, has] the same radial position as that of the
finishing position of the second layer), in order to
continuously record a data amount (movie) on the first
and second layers meeting applicant's claimed invention
as cited in column 6 lines 42-56.
See also Paper No. 8, pp. 2-3 ("[Best] also recites that
where one spiral track ends the other spiral track begins .
. . .").
Best discloses (col. 6, lines 44-56):
[T]he spiral pattern . . . may alternate between
clockwise and counter-clockwise spiral patterns on
consecutive data layers. This alternating spiral
pattern may be preferable for certain applications,
such as storage of video data, movies for example,
where continuous tracking of data is desired. In such
a case, the beam tracks the clockwise spiral pattern
inward on the first data surface until the spiral
pattern ends near the inner diameter, and then the beam
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