Appeal No. 2007-0464
Application 09/964,874
30. In Takasugi, the short-circuiting of power around the laser is not triggered by any
temperature measurement of the disk drive.
31. Takagi is concerned with making control adjustments, such as in focus, tracking,
and power output, in a disk drive in response to environmental changes such as a temperature
change. (Takagi, Column 1, Lines 49-52.)
32. Takagi discloses continual measurement of the temperature inside the optical disk
drive near the optical head. (Takagi, Column 1, Lines 49-62; Column 16, Lines 8-10.)
33. In Takagi, the measured temperature values are transmitted to a control unit
which continually determines a temperature change from the time the last control adjustment
was made, and when that difference in temperature exceeds a predetermined value, steps are
taken to make a further adjustment. (Takagi, Column 16, Lines Lines 10-17.)
34. Claims 10, 12, and 24 read as follows:
Claims 10: An optical disk drive comprising:
setting means for setting a focus offset value and/or a tracking offset value at startup of
the optical disk drive;
first temperature measurement means for measuring an internal temperature of the optical
disk drive at startup of the optical disk drive;
second temperature measurement means for measuring an internal temperature the
optical disk drive after startup of the optical disk drive;
determination means for determining whether or not a difference between the
temperature measured by the second temperature measurement means and the temperature
measured by the first temperature measurement means has exceeded a predetermined level; and
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