Dynamic magnetic information storage or retrieval – General recording or reproducing – Signal switching
Patent
1989-02-15
1992-01-21
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Signal switching
360 15, 360 70, G11B 1514, G11B 586, G11B 2104
Patent
active
050832255
ABSTRACT:
A digital signal recording and playback apparatus having a rotary heads mounted on a rotary drum capable of recording/reproducing a digital signal onto/from a magnetic tape at a tape speed which is N times as much as the standard speed while conforming to the standard track angle and length. The number of the rotary heads are increased from the standard two heads whereas the drum speed is made one half of N times standard speed and the drum diameter is made slightly larger from the standard so that the relative speed between the running tape and the rotating heads becomes equal to the standard in the double tape speed mode, and becomes twice that in the quadruple tape speed mode. Alternatively, the tape is wound around the drum having two heads, over the angular range of 180 degrees instead of the standard 90 degrees, the drum diameter is made smaller than the standard, and the drum speed is N times the standard so that the relative speed of the heads becomes equal to the standard in the double tape speed mode.
REFERENCES:
patent: 4628373 (1986-12-01), Takahashi et al.
patent: 4839750 (1989-06-01), Kato et al.
patent: 4872070 (1989-10-01), Cooper et al.
patent: 4888653 (1989-12-01), Cullum
patent: 4905104 (1990-02-01), Okamoto et al.
Inoue Yasuo
Morisaki Kazuhiko
Kim Won Tae C.
Psitos Aristotelis M.
Victor Company of Japan Ltd.
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