Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1990-11-13
1993-09-21
Dixon, Joseph L.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360 51, G11B 1920
Patent
active
052474020
ABSTRACT:
An apparatus for high speed searching and reproduction of data recorded in a tape medium includes magnetic tape, a tape mover, a high speed tape mover, a rotation cylinder with at least one head, a speed sensor, a controller, and signal converter and processor. The speed sensor generates pulses based on the speed of the rotation cylinder. The controller controls the rotation speed of a rotation cylinder based on the pulses. The controller controls the rotation speed so that a track-directional component of a relative speed between a head of a rotation cylinder and the magnetic tape in a high speed moving state realized by the high speed mover equals a first moving state realized by the tape mover. The signal converter converts at least sub-code data of output signals issued from the head into digital signals in both the first moving state and the high-speed moving state. The sub-code data represents tape-position information. A signal processor processes the digital signals issued from the signal converter to read out the sub-code data.
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Arai Kazuo
Yoshikawa Akira
Dixon Joseph L.
Matsushita Electric - Industrial Co., Ltd.
Robertson David L.
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