Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Motoyuki Suzuki0
Hiroyuki Minemura0
Mariko Umeda0
Date of Patent
June 29, 2010
0Patent Application Number
116742390
Date Filed
February 13, 2007
0Patent Primary Examiner
Patent abstract
A tracking offset is reduced. The effect of an SPP signal fluctuation is reduced by using a variable mixing ratio DPP method, and a residual tracking offset is minimized.
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