System for cutting and recording on a record disc

Claim 1

A system for cutting and recording on a record disc comprising means including first and second reproducing magnetic heads for reproducing a signal from a magnetic tape running in one direction, said second reproducing magnetic head being disposed at a predetermined position preceding said first reproducing magnetic head with respect to the running direction of said tape, means for angle modulating a carrier responsive to the signal reproduced by said first reproducing magnetic head, means for detecting the level of the signal reproduced by said second reproducing magnetic head, means responsive to the level detecting means for controlling the level of the carrier modulated by said angle modulating means, mixing means for mixing and multiplexing the direct wave signal reproduced by said fIrst reproducing magnetic head and the level controlled angle modulated wave signal, and means for cutting and recording the output multiplex signal from said mixing means on a record disc.

Claim 2

A system for cutting and recording on a record disc comprising means including first and second reproducing magnetic heads for reproducing a signal from a magnetic tape running in one direction, said second reproducing magnetic head being disposed at a predetermined position preceding said first reproducing magnetic head with respect to the running direction of said tape, means for angle modulating a carrier responsive to the signal reproduced by said first reproducing magnetic head, means for detecting the level of the signal reproduced by said second reproducing magnetic head, means responsive to the level detecting means for controlling the level of the carrier modulated by said angle modulating means, mixing means for mixing and multiplexing the direct wave signal reproduced by said fIrst reproducing magnetic head and the level controlled angle modulated wave signal, and means for cutting and recording the output multiplex signal from said mixing means on a record disc.

Claim 9

A system for cutting and recording on a record disc comprising first and second signal reproducing means including two individually associated reproducing magnetic heads for reproducing respective channel signals from a magnetic tape running in one direction , four channel signals being recorded on said tape , said magnetic head of said second signal reproduding means being disposed at a predetermined position preceding said magnetic head of said first signal reproducing means with respect to the running direction of said tape, matrixing means for matrixing two channel signals of the channel signals reproduced from said first signal reproducing means to form sum signals and difference signals, means for angle modulating a carrier responsive to the output difference signal from said matrixing means, means for detecting the level of the signal reproduced from said second signal reproducing means, means responsive to said level detecting means for controlling the level of the carrier modulated by said angle modulating means, mixing means responsive to said level control means for mixing and multiplexing the angle modulated difference signal and the output direct wave sum signal from said matrixing means, and means for cutting and recording the output multiplex signal from said mixing means on a record disc.

Claim 10

A system for cutting and recording on a record disc comprising first and second signal reproducing means including two individually associated reproducing magnetic heads for reproducing respective channel signals from a magnetic tape running in one direction , four channel signals being recorded on said tape , said magnetic head of said second signal reproduding means being disposed at a predetermined position preceding said magnetic head of said first signal reproducing means with respect to the running direction of said tape, matrixing means for matrixing two channel signals of the channel signals reproduced from said first signal reproducing means to form sum signals and difference signals, means for angle modulating a carrier responsive to the output difference signal from said matrixing means, means for detecting the level of the signal reproduced from said second signal reproducing means, means responsive to said level detecting means for controlling the level of the carrier modulated by said angle modulating means, mixing means responsive to said level control means for mixing and multiplexing the angle modulated difference signal and the output direct wave sum signal from said matrixing means, and means for cutting and recording the output multiplex signal from said mixing means on a record disc.

Claim 11

A system for cutting and recording on a record disc comprising means for transporting a four track magnetic tape in one direction, four channel signals being respectively recorded on said four tracks, four pairs of first and second magnetic heads individually associated with said four tracks for reproducing the four channel signals from the four magnetic tracks respectively, each pair comprisinG first and second magnetic heads disposed at predetermined positions on the individually associated track, said positions being such that each second magnetic head precedes the paired first magnetic head with respect to said one direction, first matrixing means for matrixing two channel signals from among the four channel signals reproduced by said first magnetic heads to form a first sum signal and a first difference signal, second matrixing means for matrixing the other two channel signals from among the four channel signals reproduced by said first magnetic heads to form a second sum signal and a second difference signal, first modulator means for angle modulating a carrier responsive to the first difference signal to produce a first angle modulated signal, second modulator means for angle modulating the carrier responsive to the second difference signal to produce a second angle modulated signal, first adding means for adding together two channel signals from among the four channel signals reproduced by said second magnetic heads, the added two channel signals respectively corresponding to the two channel signals matrixed by said first matrixing means, second adding means for adding together the other two channel signals from among the four channel signals reproduced by said second magnetic heads, first detector means for detecting the level of the output signal of said first adding means, second detector means for detecting the level of the output signal of said second adding means, first controlling means responsive to said first detector means for controlling the level of the carrier modulated by said first modulator means, second controlling means responsive to said second detector means for controlling the level of the carrier modulated by said second modulator means, first mixing means responsive to said first controlling means for mixing and multiplexing the first angle modulated signal and the first sum signal to produce a first multiplex signal, second mixing means responsive to said second controlling means for mixing and multiplexing the second angle modulated signal and the second sum signal to produce a second multiplex signal, and means for cutting and recording the first multiplex signal on one wall of a groove of a record disc and the second multiplex signal on the other wall of the groove.

Claim 12

A system for cutting and recording on a record disc comprising means for transporting a four track magnetic tape in one direction, four channel signals being respectively recorded on said four tracks, four pairs of first and second magnetic heads individually associated with said four tracks for reproducing the four channel signals from the four magnetic tracks respectively, each pair comprisinG first and second magnetic heads disposed at predetermined positions on the individually associated track, said positions being such that each second magnetic head precedes the paired first magnetic head with respect to said one direction, first matrixing means for matrixing two channel signals from among the four channel signals reproduced by said first magnetic heads to form a first sum signal and a first difference signal, second matrixing means for matrixing the other two channel signals from among the four channel signals reproduced by said first magnetic heads to form a second sum signal and a second difference signal, first modulator means for angle modulating a carrier responsive to the first difference signal to produce a first angle modulated signal, second modulator means for angle modulating the carrier responsive to the second difference signal to produce a second angle modulated signal, first adding means for adding together two channel signals from among the four channel signals reproduced by said second magnetic heads, the added two channel signals respectively corresponding to the two channel signals matrixed by said first matrixing means, second adding means for adding together the other two channel signals from among the four channel signals reproduced by said second magnetic heads, first detector means for detecting the level of the output signal of said first adding means, second detector means for detecting the level of the output signal of said second adding means, first controlling means responsive to said first detector means for controlling the level of the carrier modulated by said first modulator means, second controlling means responsive to said second detector means for controlling the level of the carrier modulated by said second modulator means, first mixing means responsive to said first controlling means for mixing and multiplexing the first angle modulated signal and the first sum signal to produce a first multiplex signal, second mixing means responsive to said second controlling means for mixing and multiplexing the second angle modulated signal and the second sum signal to produce a second multiplex signal, and means for cutting and recording the first multiplex signal on one wall of a groove of a record disc and the second multiplex signal on the other wall of the groove.