Driving circuit for double solenoid focus actuator
Driving device for an optical storage medium
Driving device for objective lens
Driving device for objective lens
Dual beam optical data system
Dual CD/DVD player with automatic disc identification
Dual half-aperture focusing and push-pull tracking using a...
Dual mode recording and reproducing apparatus having two recordi
Dual mode recording and reproducing apparatus having two recordi
DVD radial runout cancellation with self-calibration
Dynamic adjustment of disk-drive pickup signals
Dynamic tracking control in an optical recording system by sensi