首页> 外国专利> 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

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

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.
机译:根据本发明的旋转磁头式磁记录/再现设备包括一种记录格式,在该记录格式中,记录有不同频率的多个导频信号,以使其顺序地叠加在每隔一个磁道的主信号上。磁记录/再现设备包括单磁头结构,其中多个磁头以一对一的方式附接到多个致动器。对于从多个磁头中检测出相对位置误差信号的一个磁头,进行闭环控制下的动态跟踪。对于没有检测到相对位置误差信号的另一磁头,根据关于一个磁头的位移量的信息来执行开环控制或半闭环控制。因此,提供了一种磁记录/再现设备,该磁记录/再现设备允许高精度的动态跟踪,而无需提供许多导频信号生成装置并且不会降低磁头鼓的制造成品率。

著录项

  • 公开/公告号US6115204A

    专利类型

  • 公开/公告日2000-09-05

    原文格式PDF

  • 申请/专利权人 SHARP KABUSHIKI KAISHA;

    申请/专利号US19940278151

  • 发明设计人 YOSHIYUKI YOKOMACHI;KAZUKI MURATA;

    申请日1994-07-21

  • 分类号G11B5/588;

  • 国家 US

  • 入库时间 2022-08-22 01:36:16

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