Appeal No. 1999-2705
Application 08/686,756
Masaki is directed to a control method and controller for
an optical storage drive including an optical head arrangement
for applying light to an optical storage medium and for
receiving reflected light from the optical storage medium.
The values stored in the nonvolatile memory are drive current
values with which the laser light source provides a
predetermined light power value (abstract). Because Masaki
does not deal with adjusting write currents in write heads,
the only apparent explanation for the modification of Lehureau
in view of Masaki is hindsight in view of Appellant's
disclosure.
In summary, we find no motivation for modifying Lehureau
to produce the claimed invention. Lehureau does not disclose
or suggest compensating for the varying magnetic properties of
the individual recording heads in a matrix recording head,
much less suggest the general solution of determining an
individual magnetizing current for each individual recording
head. This suggestion must come from the prior art or from
the knowledge of one of ordinary skill in the art. Neither
Christner nor Masaki is directed to the problem of
compensating for the varying magnetic properties of the
- 8 -
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next
Last modified: November 3, 2007