Appeal No. 2002-1235
Application No. 08/823,823
In addition to the admitted prior art, the examiner relies
upon the following references as evidence of obviousness:
Takahashi et al. (Takahashi) 04-095287 Mar. 27, 1992
(Japanese Published Unexamined Patent)
Dana J. Parker et al. (Parker), CD-ROM Professional's CD-
Recordable Handbook - The Complete Guide to Practical Desktop
CD 82-85 (David R. Guenetta ed., 1996)
Appellant's claimed invention is directed to an apparatus
and method of providing write protection of a recordable disk by
covering or altering the power calibration area of the disk.
According to appellant's specification, before writing or
recording information on a disk, the disk drive must calibrate
laser power by writing into the power calibration area. If the
drive cannot read its calibration pattern in the calibration area
on the disk, "it will not erase or write in the data area of the
disk" (page 2 of specification, second paragraph). In the
present case, appellant covers or abrades the power calibration
area to prevent writing data on the recordable area of the disk.
Appealed claims 1-4 stand rejected under 35 U.S.C. § 112,
second paragraph. Appealed claims 1-11 stand rejected under
35 U.S.C. § 103 as being unpatentable over the admitted prior art
in view of Parker and Takahashi.
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