Duel-layer optical scanner with non-periodic phase structure...

Durable magneto-optical disk having a rare earth-transition amor

Dust protection assembly for magneto-optic drive apparatus

Dust removing system for optical disk device

Dust-proof structure for optical pickup unit

Dustproof case for an optical information tape including a clamp

Duty factor control circuit with variable output pulse width fun

Duty factor control circuit with variable output pulse width fun

Duty ratio control apparatus for pre-pit detection or header...

DVD defect management scheme that is transparent to DVD...

DVD radial runout cancellation with self-calibration

DVD reading-writing pick-up head employing multiple wavelengths

DVD reproducing apparatus, disk reproducing apparatus and...

DVD reproducing apparatus, disk reproducing apparatus and...

DVD seamless playback system

DVD-audio disk

DVD-audio disk, and apparatus and method for playing the same

DVD-audio disk, and apparatus and method for recording data...

DVD-Audio disk, and apparatus and method for recording data...

DVD-audio disk, and apparatus and method for recording data...