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Rotary head type magnetic recording/reproducing apparatus employing dynamic closed loop and semi-closed loop or open loop tracking systems
Rotary head type magnetic recording/reproducing apparatus employing dynamic closed loop and semi-closed loop or open loop tracking systems
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机译:采用动态闭环和半闭环或开环跟踪系统的旋转磁头式磁记录/再现设备
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摘要
A rotary head type magnetic recording/reproduction apparatus according to the present invention includes a recording format in which a plurality of pilot signals of different frequencies are recorded to be superimposed sequentially on a main signal for every other track. The magnetic recording/reproduction apparatus includes a single head structure where a plurality of magnetic heads are attached to a plurality of actuators in a one-to-one correspondence. For one magnetic head detecting a relative position error signal out of the plurality of magnetic heads, dynamic tracking under closed loop control is carried out. For another magnetic head that does not detect a relative position error signal, open loop control or semi-closed loop control is carried out according to information concerning the amount of displacement of the one magnetic head. Thus, a magnetic recording/reproduction apparatus is provided that allows highly accurate dynamic tracking without providing many pilot signal generation means and without reducing the manufacturing yield of a head drum.
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