Disc high resolution scanner

Disc master positioning apparatus for a recording system

Disc player and stylus therefor

Disc player control system for quickly placing disc player in co

Disc player system with digital information demodulation operati

Disc player with an automatic initialization function

Disc record groove skipper

Disc record with tapered groove

Disc recording

Disc recording medium and apparatus for playback thereof

Disc recording system with speed control

Disc reproducing apparatus

Disc track servo system

Discharge protecting circuit for a television receiver

Discontinuous motion special effects generator for television

Discrete surveillance system and method for making a component t

Discriminating an image data characteristic and controlling stor

Discriminating device for automatically discriminating between r

Discrimination sensor and discrimination machine

Disk and navigation apparatus for position locating system