Auto-tracking method and apparatus of a magnetic recording/reproducing apparatus

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United States of America Patent

PATENT NO 4613914
SERIAL NO

06754908

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Abstract

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An auto-tracking method and apparatus of a helical scan type magnetic recording/reproducing apparatus wherein envelope levels of reproduced signals are detected and the running phase of a magnetic tape is controlled so that the envelope level of the reproduced signal becomes maximum after detection is effected roughly and then finely, thereby allowing a video head to scan a track on the magnetic tape.

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Patent Owner(s)

Patent OwnerAddress
HITACHI LTD A CORP OF JAPAN6 KANDA SURUGADAI 4-CHOME CHIYODA-KU TOKYO
HITACHI MICROCOMPUTER ENGINERING LD A CORP OF JAPAN1479 JOSUIHONCHO KODAIRA-SHI TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukushima, Isao Katsuta, JP 36 344
Goto, Katsuhiko Mito, JP 25 320
Kobori, Yasunori Yokohama, JP 24 373
Nishijima, Hideo Katsuta, JP 129 1231
Okamoto, Kaneyuki Katsuta, JP 29 409
Takahashi, Takashi Katsuta, JP 200 2650

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