Appeal No. 96-1895
Application 08/011,682
means selectively turns said low pass filter off during a
seek operation of said controlled device and on during a
settling operation of said controlled device." Claim 9
contains a similar limitation, but refers to a "magnetic
head" instead of the "controlled device."
The examiner relies on Kanda, column 7, lines 32-39,
and the switching circuits 32, 35, integrator 30, and
arithmetic control means 31 (FR4; EA4-5). We look at the
teachings of Kanda as a whole.
Kanda discloses (col. 1, lines 18-21): "The seek
control operation of the servo system includes a speed
control operation, transient control operation (stop control
operation) and positioning control/operation (track
following operation)." So, Kanda discloses a speed control
operation, corresponding to appellant's "seek operation," a
transient control operation, and a track following (position
control) operation. Kanda also discloses (col. 1,
lines 28-31): "The transient control operation settles the
state of the head when a shift is made from the speed
control operation to the track following operation"
(emphasis added). Thus, the transient control operation and
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