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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKunio Sekimoto, Katsuhiko Yamamoto, Chojuro Yamamitsu, Kozo Kurashina
Estimating the term…
In a video tape recorder, luminance and chrominance signals are recorded respectively by first and second transducer heads along separate tracks skewed to the direction of tape motion. The transducer heads are rotated during particular modes such as slow-motion or still picture reproduction, in a tape-head speed relationship different from the normal tape-head speed relationship, causing the transducer heads to traverse several tracks. A switching circuit is coupled to the transducer heads to selectively connect the outputs of the heads to an output circuit in response to a point of transition of amplitude of the output signal from the second head to cancel unwanted signal components detected by the heads during traversal across the tracks.
A video tape recording and reproducing apparatus having first and second transducer heads adapted to receive first and second input recording signals respectively and mounted on the circumference of a rotary cylinder normally driven at a speed having a predetermined relationship with the speed of movement of the recording tape during recording, the recording signals being recorded along alternate tracks skewed relative to the length of the tape, said cylinder being drivable during a slow-motion playback mode or the like for scanning the skewed tracks on the tape at a manually selectable speed different from the speed at which said rotary cylinder is normally driven during recording of said signals, thereby causing said transducer heads to traverse several tracks for each line scan of said tape by said transducer heads and producing unwanted signals having a sharply transitory waveform, comprising detecting means for detecting a transitory point of said waveform and generating therefrom a control signal, and coupling means responsive to said control signal for selectively coupling one of a plurality of playback signals derived from said first and second transducer heads to a utlilization circuit.
A video tape recording and reproducing apparatus having first and second transducer heads adapted to receive first and second input recording signals respectively and mounted on the circumference of a rotary cylinder normally driven at a speed having a predetermined relationship with the speed of movement of the recording tape during recording, the recording signals being recorded along alternate tracks skewed relative to the length of the tape, said cylinder being drivable during a special playback mode for scanning the skewed tracks on the tape at a manually selectable speed having a relationship with the speed of movement of the tape which is different from the predetermined relationship at which said signals are recorded, thereby causing said transducer heads to traverse several tracks for each scan of said tape by said transducer heads and producing unwanted signals having a sharply transitory waveform, comprising detecting means for detecting a transitory point of said waveform and generating therefrom a control signal, and coupling means responsive to said control signal for selectively coupling one of a plurality of playback signals derived from said first and second transducer heads to a utilization circuit.
Dependencies are inferred from the claim text.