Differential track recording

Diffraction grating using birefringence and optical head in whic

Digital data reproducing apparatus

Digital optical compact disc and compact disc player

Digital optical disc with writeable regions and optical disc pla

Digital recorder for recording/reproducing events formed by divi

Digital recorder for reproducing only required parts of audio si

Digital signal reproduction devices, integrated circuits for use

Digital video recorder wide dynamic range optical power...

Directory structure for worm optical media

Disc apparatus

Disc apparatus for recording/reproducing with zone constant angu

Disc apparatus for selectively outputting data from a disc and a

Disc apparatus using character-based control codes in a table of

Disc changer and player that reads and stores program data of al

Disc controller with improved data sync and re-sync mark detecti

Disc data reproducing apparatus and signal processing circuit

Disc data reproducing apparatus and signal processing unit for p

Disc device having eccentricity measurement and clock correction

Disc device having eccentricity measurement and clock correction