Appeal No. 1995-3903 Page 2
Application No. 08/062,737
DECISION ON APPEAL
This is a decision on the appeal under 35 U.S.C. § 134
from the final rejection of claims 37-47. We affirm-in-part.
BACKGROUND
The invention at issue controls a disk drive. The disk
comprises a plurality of data tracks. Each track is divided
into sectors; each sector contains a sector mark. A “sector
period” is the time between two successive sector marks. A
microcontroller schedules tasks to be done under control of a
microprocessor during each sector period. A sector task and a
motor speed control task are among those scheduled. The tasks
are scheduled to maintain their initiation in a constant
spatial relationship to the sector period despite the
rotational speed of the disk.
Claim 37, which is representative for our purposes,
follows:
37. A programmable microcontroller in a disk
drive system for controlling the initiation of a
plurality of processes during each sector period
where said disk drive system performs a plurality of
processes for controlling the operation of said disk
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