Appeal No. 2001-1847
Application No. 08/861,157
write gate input signal from said disk data controller, for
generating a read gate output signal and a write gate output
signal." The examiner (Answer, pages 5-6) asserts that elements
28 and 20 together form the claimed mode selection signal
generator. We disagree.
Park's elements 20 and 28 are the WID reader and the disc
data controller, respectively. As shown in Figure 7, WID reader
20 receives the read gate input signal from the disk data
controller, thereby satisfying part of the requirements for the
mode selection signal generator. However, pre-amplifier 12, not
disk data controller 28, receives the write gate input signal
from the disk data controller , as required by claim 4. To find
that the disk data controller receives signals that it generates
would be ridiculous. Therefore, elements 20 and 28 cannot form
the claimed mode selection signal generator as proposed by the
examiner. Further, although element 12 receives the write gate
input signal from the disk data controller, pre-amplifier 12 does
not generate a write gate output signal, and therefore fails to
meet other limitations for the mode selection signal generator.
Upon review of Park, we find that no element or combination of
elements would satisfy all of the limitations claimed for the
mode selection signal generator.
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