Color television receiver and color video tape recorder system

Claim 2

A record/play color video tape recorder and color television receiver system comprising: a color television receiver including an RF tuner, a video detector, demodulator circuitry and a reference oscillator; a color video tape recorder including a record/play unit, a subcarrier oscillator adapted to receive an input from said record/play unit, an RF oscillator and modulator circuitry adapted to receive inputs from said record/play unit and said RF oscillator; siGnal input means adapted to be connected to the RF tuner input of said color television receiver during the record operation; means connecting the modulator circuitry output of said video tape recorder to the RF tuner input of said color television receiver during the play operation; means connecting the video detector output of said color television receiver to the record/play unit input of said video tape recorder; and adapter means connected between said color television receiver and said video tape recorder, operative to apply the subcarrier oscillator output of said video tape recorder to an input of said demodulator circuitry in said color television receiver during the play cycle of operation, and additionally operative to connect the reference oscillator output to an input to the demodulator circuitry of said color television reciever during the record cycle of operation.

Claim 3

The invention according to claim 1 wherein said means connecting the video detector output of said color television receiver to the record/play unit input of said video tape recorder comprises: first and second transistor each having base, emitter and collector electrodes; means connecting said video detector output to the base electrode of said first transistor; means connecting the emitter electrode of said first transistor to the base electrode of said second transistor; a resistor connected between the emitter electrode of said second transistor and ground; means connecting the record/play unit input of said video tape recorder to the emitter electrode of said second transistor; a source of energizing potential connected to the collector electrodes of said first and second transistors; and a second resistor connected between the base electrode of said first transistor and said source of energizing potential.

Claim 4

The invention according to claim 1 wherein said adapter means comprises: first and second input terminals and an output terminal connected respectively to the subcarrier oscillator output of said video tape recorder, the reference oscillator output of said color television receiver and an input of the demodulator circuitry of said color television receiver; an amplifier; means connecting the input of said amplifier to said first input terminal; and control means coupling the output of said amplifier to said output terminal during the presence of a subcarrier signal and operative to connect said second input terminal to said output terminal during the absence of a subcarrier signal.

Claim 5

The invention according to claim 3 wherein said adapter means additionally comprises a tint control network connected to the input of said amplifier.

Claim 6

The invention according to claim 3 wherein said control means comprises: a relay having a control winding, first and second stationary contacts and a center armature contact, said first stationary contact connected to said second input terminal and said center armature connected to said output terminal, said center armature touching said first stationary contact when the relay is deenergized and touching said second stationary contact when said relay is energized; a transformer having its primary winding connected across the output of said amplifier and its secondary winding connected between ground and the second stationary contact of said relay; a transistor having base, emitter and collector electrodes, the emitter electrode thereof connected to ground; a source of energizing potential; a resistor connected in series with the control winding of said relay between the collector electrode of said transistor and said source of energizing potential; and biasing means connected between the base electrode of said transistor and the secondary winding of said transformer, operative in the presence of a subcarrier signal to forward bias said transistor causing emitter-to-collector current to flow through the control winding of said relay, thereby Energizing said relay.

Claim 7

A record/play color video tape recorder and color television receiver system comprising: a color television receiver including an RF tuner, a video detector, demodulator circuitry, a subcarrier reference oscillator, first and second input terminals connected respectively to the inputs of said RF tuner and said demodulator circuitry, and first and second output terminals connected respectively to the outputs of said video detector and said subcarrier reference oscillator; a color video tape recorder including a record/play unit, a subcarrier oscillator adapted to receive an input from said record/play unit, an RF oscillator, modulator means adapted to receive inputs from said record/play unit and said RF oscillator, an input terminal connected to said record/play unit, and first and second output terminals connected respectively to the outputs of said subcarrier oscillator and said modulator means; a two-pole switching means connected to the first input terminal of said color television receiver; an antenna connected to one pole of said two-pole switching means; means connecting the other pole of said two-pole switching means to the second output terminal of said video tape recorder; and an adapter network including means connecting the first output of said color television receiver to the input of said video tape recorder and operative to provide impedance matching therebetween, means connecting the second output of said color television receiver to the second input of said color television receiver during the record cycle of operation and means connecting the first output terminal of said video tape recorder to the second input of said color television receiver during the play cycle of operation.

Claim 8

A record/play color video tape recorder and color television receiver system comprising: a color television receiver including an RF tuner, a video detector, demodulator circuitry, a subcarrier reference oscillator, first and second input terminals connected respectively to the inputs of said RF tuner and said demodulator circuitry, and first and second output terminals connected respectively to the outputs of said video detector and said subcarrier reference oscillator; a color video tape recorder including a record/play unit, a subcarrier oscillator adapted to receive an input from said record/play unit, an RF oscillator, modulator means adapted to receive inputs from said record/play unit and said RF oscillator, an input terminal connected to said record/play unit, and first and second output terminals connected respectively to the outputs of said subcarrier oscillator and said modulator means; a two-pole switching means connected to the first input terminal of said color television receiver; an antenna connected to one pole of said two-pole switching means; means connecting the other pole of said two-pole switching means to the second output terminal of said video tape recorder; and an adapter network including means connecting the first output of said color television receiver to the input of said video tape recorder and operative to provide impedance matching therebetween, means connecting the second output of said color television receiver to the second input of said color television receiver during the record cycle of operation and means connecting the first output terminal of said video tape recorder to the second input of said color television receiver during the play cycle of operation.