Appeal No. 96-0663
Application No. 08/253,618
DECISION ON APPEAL
This is a decision on appeal from the final rejection of
claims 14, 17 and 18. Claims 1 through 13, 15 and 16 have been
canceled.
The invention pertains to a method for writing to very high
track density as well as to conventional track density floppy
disks.
Representative independent claim 14 is reproduced as
follows:
14. A method for writing separated, concentric data tracks
on a floppy disk with a magnetic core with a write element and no
separate trim erasure elements, the method comprising:
determining whether a high-capacity floppy disk with
optical servo tracks is present or a lower-capacity floppy disk
without optical servo tracks is present, and if said high-
capacity floppy disk is present, restricting the subsequent steps
of positioning such that a subsequent step of reading or writing
data is limited to data recording areas between said optical
servo tracks;
positioning a magnetic core in a first radial position
relative to a surface of a rotating floppy disk on a first
revolution by use of both a stepper motor attached to a base
carriage that carries said magnetic core on a fine position
actuator attached to a voice coil motor, wherein a positioning
sensor attached to said fine position actuator and a reflective
pad attached to a shunt attached to a magnet that moves with said
base carriage is utilized to control movement of said fine
position actuator and when said fine position actuator moves
relative to said reflective pad to reflect light emitted from
said positioning sensor off said reflective pad to be collected
by said positioning sensor and converted to a signal which
controls movement of said fine position actuator, and wherein
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Last modified: November 3, 2007