Apparatus for recording video signals at a plurality of different recording speeds
First Claim
1. Apparatus for recording a video signal in a plurality of tracks extending obliquely on a longitudinally advanced magnetic tape, said video signal occurring in successive predetermined intervals, said tracks being at a uniform predetermined angle with respect to the longitudinal direction of the tape and having a uniform predetermined pitch and each including one said predetermined interval for representing a standard track format, said apparatus comprising:
- means for generating at least one synchronizing signal of variable frequency;
means for determining said variable frequency in accordance with a desired mode of reproduction;
camera means including image transducer means from which said video signal is obtained in correspondence to incident light from an object image projected on said image transducer means, and means for transmitting said video signal from said image transducer at a selected rate;
recording means including recording head means repeatedly scanning across said tape for recording said transmitted signal thereon;
tape drive means for advancing said tape in said longitudinal direction while said head means scans thereacross; and
means for controlling said selected rate and the speeds at which said head means scans across the tape and at which the tape is longitudinally advanced, respectively, in dependence on said variable frequency of the synchronizing signal so that the tracks are always disposed on said tape regardless of the speed of advancement of the tape.
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Accused Products
Abstract
A video signal recording apparatus for recording a video signal on a magnetic tape includes an oscillator which generates an oscillation signal; a variable frequency divider for frequency dividing the oscillation signal; a control circuit for controlling the frequency-dividing ratio of the variable frequency divider in accordance with the speed of advancement of the magnetic tape during the recording operation; a frequency divider for generating a plurality of synchronizing signals in response to the output of the variable frequency divider; a camera including an image transducer from which the video signal is obtained in correspondence to incident light from an object image projected on the image transducer, and a transmission device for transmitting the signal from the image transducer at a rate determined by the synchronizing signals; and a recording section including a processing circuit for separately processing the luminance and chrominance components of the transmitted video signal, and at least one transducer for recording the processed video signal on the magnetic tape in response to the synchronizing signals, wherein the video signal is always recorded on the magnetic tape in the same format regardless of the speed of advancement of the magnetic tape during the recording operation.
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Citations
14 Claims
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1. Apparatus for recording a video signal in a plurality of tracks extending obliquely on a longitudinally advanced magnetic tape, said video signal occurring in successive predetermined intervals, said tracks being at a uniform predetermined angle with respect to the longitudinal direction of the tape and having a uniform predetermined pitch and each including one said predetermined interval for representing a standard track format, said apparatus comprising:
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means for generating at least one synchronizing signal of variable frequency; means for determining said variable frequency in accordance with a desired mode of reproduction; camera means including image transducer means from which said video signal is obtained in correspondence to incident light from an object image projected on said image transducer means, and means for transmitting said video signal from said image transducer at a selected rate; recording means including recording head means repeatedly scanning across said tape for recording said transmitted signal thereon; tape drive means for advancing said tape in said longitudinal direction while said head means scans thereacross; and means for controlling said selected rate and the speeds at which said head means scans across the tape and at which the tape is longitudinally advanced, respectively, in dependence on said variable frequency of the synchronizing signal so that the tracks are always disposed on said tape regardless of the speed of advancement of the tape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification