Optical type disc with V-shaped groove and optical type reproduc

Optical type pickup apparatus with lens holder supported by fram

Optical-disc drive apparatus and method of deciding optimum...

Optical-information recording apparatus and method and...

Optically reproducing and tracking system for spiral information

Optically writable record of digital information and recording a

Optimal power calibration method for an optical disc

Optimal recording method for optical recording media and...

Optimum power calibration method and optical disk drive

Optimum slice level signal reading apparatus for optical disk

Optimum-recording-speed determining method, recording-speed...

Opto-electronic apparatus for inscribing and/or reading recordin

Opto-electronic focussing-error detection system with a compound