Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshikazu Fujita0
Date of Patent
June 3, 2008
0Patent Application Number
111333280
Date Filed
May 20, 2005
0Patent Primary Examiner
Patent abstract
A seek control unit increments by a first magnitude the maximum speed when the pickup head is moved while the number of jumped tracks can be counted appropriately. If the number of tracks jumped during seek could not be counted appropriately, the seek control unit decrements the maximum speed by a second magnitude. The seek control unit sets the maximum speed stored in a speed information storage device 8 for a marginal speed. Once set for the marginal speed, the seek control unit, even when the number of jumped tracks can be counted appropriately, does not execute updating of incrementing the maximum speed stored in the speed information storage unit.
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