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Disk driving apparatus and information readout method with selective servo control for read-out destinations of lands and grooves
 
   
Document Number
US Patent 7315491
Issued Date
January 1, 2008
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Abstract
A disc driving apparatus and an information readout method according to the present invention realize optimum servo control of a readout unit in reading out the information from a recording medium having lands and grooves. The disc driving apparatus includes a unit for correcting tracking error signals, a unit for inverting signals corrected by the correcting unit to generate inverted tracking error signals, a unit for detecting which of the lands and the grooves the readout unit is scanning, and a unit for selecting the tracking error signals or the inverted tracking error signals according to the results of detection by the detection unit to tracking-control the readout unit by the selected signals.
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Number of Claims:
15
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Published
January 1, 2008
Application Number
10/296,750
Filed
March 20, 2002
US Classification
369/44.26   369/44.28
Int'l Classification
G11B   7/09   (20060101)  
Examiner
Priority Data
Mar 29, 2001 [JP] 2001-94684 Mar 29, 2001 [JP] 2001-94685 Mar 29, 2001 [JP] 2001-94686
USPTO Field of Search
369/44.26   369/44.28  
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