Dynamic magnetic information storage or retrieval – General recording or reproducing – Signal switching
Patent
1997-01-28
1999-06-15
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Signal switching
360 70, 360 75, 386 6, 386 72, 386 74, 386 78, 386 79, 386 80, 386 81, G11B 1514
Patent
active
059127805
ABSTRACT:
A magnetic recording and reproducing apparatus has a rotary magnetic head mechanism having at least a first rotary magnetic head with a magnetic gap set to a azimuth angle less than 90 degrees in a clockwise direction with respect to a width direction of recorded traces and a second rotary magnetic head with a magnetic gap set to a azimuth angle less than 90 degrees in a counterclockwise direction with respect to the width direction. The traces are formed on a magnetic tape moving in a forward direction at a speed in accordance with a rotational locus of the heads moving and obliquely crossing a travel direction of the tape. The first output signals obtained by the first head are selected in the case where a rotational locus surface of the heads changes in a reproduction operation within an angular range less than 180 degrees in a clockwise direction with respect to the traces formed on the tape. On the other hand, the second output signals obtained by the second head are selected in the case where the rotational locus surface of the heads changes in the reproduction operation within an angular range less than 180 degrees in a counterclockwise direction with respect to the direction of the traces formed on the tape. Reproduction is executed in response to the selected first or second output signals while the tape is being moved in the forward direction or a reverse direction at a speed higher than that while recording.
REFERENCES:
patent: 4703370 (1987-10-01), Inoue et al.
patent: 5184254 (1993-02-01), Kaneko et al.
Ohishi Takeo
Yamada Yasuaki
Davidson Dan Israel
Meller Michael N.
Psitos Aristotelis M.
Victor Company of Japan Ltd.
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