Appeal No. 1998-0591
Application 08/538,517
To spin the disc, motor 3 is adequately
disclosed. In the Fig. 2 embodiment, the desired
velocity is defined by using the distance signal 21
from sensor 20 to select a speed signal from a
table, or by calculating in an arithmetic unit or
analog signal processor (page 5, lines 4-9). The
present velocity is obtained as signal 14 from the
drive motor 3. Control means 4 simply compares the
desired and present velocity signals, and uses the
difference to cause the motor 3 to accelerate or
decelerate. This is a very well known motor speed
servo loop. In other embodiments the distance
signal is provided, for example, by a coded signal
which is read by the scanning head 2.
On this record, the examiner has not articulated a
reasonable basis to doubt that the invention of claims 12-20
and 22-31 is enabled by the appellants’ original disclosure.
In particular, it has not been adequately explained by the
examiner why it would take undue experimentation by one with
ordinary skill in the art to control the motor speed based on
the desired speed at the next scanning location and the
current speed.
Conclusion
The rejection of claims 12 and 13 under 35 U.S.C. §
102(b) as being anticipated by Syracuse is reversed.
12
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