Inventor · disambiguated record
Motoyasu Yumita
Also filed as: YUMITA MOTOYASU
4 granted patents·27 citations·filing 1997–2006
73Inventor score
Technology areasG11B
Files withSONY CORP4
Top patents by PatentIndex Score
4 records- 0172US7586816B2Playback apparatus and layer jump methodSONY CORP·Filed 2006·Granted Sep 8, 2009·3 cites·9 claims
- 0269US6487144B2Disk 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 mediumSONY CORP·Filed 2000·Granted Nov 26, 2002·8 cites·9 claims
- 0354US5822281ADisk apparatus and disk access method employing counterelectromotive voltage from second voice coil motor to control first voice coil motorSONY CORP·Filed 1997·Granted Oct 13, 1998·14 cites·30 claims
- 0453US6716508B2Optical recording mediumSONY CORP·Filed 2001·Granted Apr 6, 2004·2 cites·2 claims
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