Inventor
YUMITA MOTOYASU
JP4 patents
Patents
4 patentsUS6487144B2Nov 26, 2002
Disk recording medium including data pre-formatted-data-recorded header having first and second identical address numbers radially displaced from each other on opposite sides of groove or land track center line, and disk drive unit for use with the recording medium
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US5822281AOct 13, 1998
Disk apparatus and disk access method employing counterelectromotive voltage from second voice coil motor to control first voice coil motor
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US6716508B2Apr 6, 2004
Optical recording medium
SONY CORP2 citations60
US7586816B2Sep 8, 2009
Playback apparatus and layer jump method
SONY CORP3 citations57