Method and apparatus for reproducing information at variable spe

Details Method and apparatus for reproducing information at variable spe Method and apparatus for reproducing information at variable spe

1983-12-23

1986-04-08

McElheny, Jr., Donald

Dynamic magnetic information storage or retrieval

Record editing

360 744, 360 103, H04N 5783

Patent

active

045816590

ABSTRACT:
A method and apparatus for reproducing information at variable speeds from a magnetic tape by correcting a deviation between at least one video track of the magnetic tape and a rotating head during a tape stop state of an intermittent drive for a noiseless slow-still picture in a video tape recorder using pilot signals. A series of pulses produced by a frequency generator of a capstan for feeding the tape is counted during the tape feeding state of an intermittent drive in order to detect a timing of the stopping of the tape feeding. As the count number equals a set value corresponding to a regular amount of feeding of the tape during the intermittent drive, the tape feeding is controlled to stop. A tracking error signal is produced from the pilot signals reproduced from the tape by the rotating head within the tape stop state of the intermittent drive and the set value for the next tape feeding of the intermittent drive is adjusted in response to the tracking error signal.

REFERENCES:
patent: 4148082 (1979-04-01), Okada et al.
patent: 4255768 (1981-03-01), Kubota
patent: 4322755 (1982-03-01), Kosaka
patent: 4404601 (1983-09-01), Sakamoto
patent: 4426665 (1984-01-01), Bradford
patent: 4445146 (1984-04-01), Sakamoto et al.

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