Appeal No. 95-0355
Application 08/022,561
track.
There is no disclosure that the sync
signal 43 has the same signal format as
that of any ?frame sync signals for the
main information data?. In fact, there is
no disclosure that the main information
data is even organized into frames or that
it has frame sync signals at all. [Reply
brief, page 2.]
The examiner’s rejection of the appealed claims is
untenable. Figure 4 of Ogawa’s drawings shows a photodetector
circuit which mainly comprises a four segment detector 10
composed of four photodetectors A, B, C and D for detecting
the optical readout of information photo-magnetically recorded
on a recording track 3 of a recording disc to produce a data
signal RF and an address information signal ADR from the
available signal and data information on the recording track
of the disc. In appellants’ system, the single demodulation
and decoding circuit shown in Figure 6 of appellants’ drawings
does not correspond to Ogawa’s photodetector circuit. Instead,
it is connected through a
selector switch 51 to the photodetector circuit which detects
the optical pickup from the track on the recording medium.
6
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Last modified: November 3, 2007