Appeal No. 98-0595
Application 08/461,806
The Rejection on Appeal
Claims 1-4 and 9 stand finally rejected under 35 U.S.C.
§ 102(e) as being anticipated by Lewis. Claim 1 is the sole
independent claim. Claims 2-4 and 9 depend either directly or
indirectly from claim 1.
The Invention
The claimed invention is directed to a synchronizing
control system for an array of disk drive data storage
devices. Independent claim 1 is reproduced below:
1. A synchronizing control system for an array of
disk drive data storage devices comprising
a plurality of disk drives,
each said disk drive including a disk spindle
assembly driven by a spindle motor, an oscillator assembly
that supplies a precision index signal, switch means
connecting said precision index signal to an index input line,
and a spindle motor control circuit connected to said index
input line, said spindle motor control circuit including means
for regulating said disk spindle assembly speed and
synchronizing said disk spindle assembly with the index signal
on said index signal input line;
a common line interconnecting the index input
lines of each of said plurality of disk drives;
a bus interconnecting each of said plurality of
disk drives; and
means for activating one and only one of said
switch means during synchronized operation of said plurality
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007