Appeal No. 1998-1365 Page 13
Application No. 08/663,969
of time is equal to the multiple when the clock signal
generator is operating correctly.
Both Marshall and Vanderspool teach the claimed
limitations. We address the references seriatim.
Marshall teaches that the frequency of the clock signal
is a multiple of the frequency of the reference clock signal.
Specifically, the reference’s local clock signal “is an
approximately 512 kilohertz phase increment signal.” Col. 2,
ll. 35-56. Marshall’s remote clock signal, which serves as a
reference clock signal, has a frequency of 4 kHz. Col. 3,
ll. 10-12. The phase increment signal’s frequency of 512 kHz
is 128-times greater than the remote clock signal’s frequency
of 4 kHz. By employing a phase increment signal frequency
that is 128-times greater than the remote clock signal
frequency, the reference teaches that the frequency of the
clock signal is a multiple of the frequency of the reference
clock signal.
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