Video disc player with a freeze frame feature
AssigneeRCA Corporation
InventorJunzo Makino
Life of this patent
Estimating the term…
Abstract
A "freeze frame" video disc player is described for playback of records having an integral number of TV signal frames per circular information track or per convolution of a spiral information track. The player includes a stripe of magnetic material secured to the periphery of the player turntable and magnetic transducer apparatus for repeated recording and recovery of the frozen frame to and from the magnetic stripe.
Claims14
A video disc player of the type for reproducing signal from circular or spiral information tracks disposed on the surface of a capacitive type or optical type disc record, each circular track or spiral convolution having N frames of video signal recorded therein, N being an integer greater than one;
- said player comprising:
- a turntable base having a first surface for rotatably supporting said disc record;
- An endless stripe of magnetic material disposed on a second circumferential surface of said turntable and being susceptible of electrically recording information thereon;
- at least two magnetic record/replay transducers disposed adjacent said magnetic stripe for recording and reproducing signal thereon, said transducers arranged at multiples of 360/N degrees with respect to each other so that N frames of said video signal may be recorded on said stripe;
- signal pickup means cooperating with said disc record for the sole purpose of recovering signal therefrom;
- means coupled with said signal pickup means and said transducers for applying selective frames of signal recovered by selective ones of said transducers or said pickup means to others of said transducers for recording or rerecording said selected frames on the magnetic stripe;
- and
- means for selectively applying signal frames recovered from one of said transducers and said signal pickup means to a player output terminal in a sequence different from real time signal recovery from the disc record.
A video disc player for recovering signal from capacitive type disc records having signal recorded in information tracks thereon, each track having N complete segments of information per track, N being an integer greater than one, with segments being radially aligned from track to track, said player comprising:
- a turntable for rotatably supporting said disc record;
- a signal pickup transducer solely for recovering signal from the disc record;
- a stripe of magnetic recording material secured on a circumferential surface of the turntable perpendicular to the disc supporting surface of said turntable;
- a magnetic recording transducer positioned proximate the magnetic stripe for recording signal thereon when relative velocity is created therebetween;
- a magnetic replay transducer positioned proximate said magnetic stripe displaced from said magnetic recording transducer by 360/N degrees in the direction of turntable rotation;
- first means for altering the normal progression of the signal pickup transducer radially across the disc;
- second means for selectively applying signal segments from one of said signal pickup transducer and said magnetic replay transducer to a player output terminal to produce a signal sequence different from a normal sequence of recovered signals;
- further means for selectively applying selected signal segments from one of said signal pickup transducer and said magnetic replay transducer to said magnetic recording transducer for recording said selected segments on the magnetic stripe.
Dependencies are inferred from the claim text.