Directionally controlled dispersive filtering for reducing co-ch

Disaster alert system

Disc and videodisc reader head positioning control system

Disc film scanning apparatus

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 recording tracking system

Disc reproducing apparatus

Disc track servo system

Discharge protecting circuit for a television receiver

Discontinuous motion special effects generator for television