Disk, disk device and track center detection method

Disk-shaped recording medium and apparatus for recording and/or

Disklike storage medium and tracking method using the same

Displacement detecting device for optical head

Displacement measurement

Dithered center tracking system

Dithering optical data logger

DRDW differential phase tracking method and apparatus

Drive apparatus for objective lens

Drive apparatus for optical recording medium

Drive control apparatus, drive control method and optical...

Drive signal generation circuit

Drive system

Driver for an objective of an optical scanning unit

Driving apparatus and method, program, and recording medium

Driving apparatus of an optical recording medium

Driving circuit for double solenoid focus actuator

Driving device for an optical storage medium

Driving device for objective lens

Driving device for objective lens