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

Disk bandwidth allocations to prioritize disk requests

Disk container supporting a detachable memory

Disk container supporting a deteachable memory

Disk player

Disk player for displaying recorded audio signals

Disk player having variable spindle speed for continuous audio i

Disk player with a blanking during fast scanning