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    • 61. 发明申请
    • TRACKING CONTROL APPARATUS INCLUDING A SERVO HEAD HAVING A TAPERED TRANSDUCING GAP
    • 跟踪控制装置,包括带有切换传输缝隙的伺服头
    • WO1993007612A1
    • 1993-04-15
    • PCT/US1992008629
    • 1992-10-09
    • EASTMAN KODAK COMPANY
    • EASTMAN KODAK COMPANYJEFFERS, Frederick, JohnROLKER, John
    • G11B05/596
    • G11B5/596G11B5/23G11B5/29G11B5/584
    • Tracking control apparatus includes a magnetic recording medium (disk or tape) comprising a dedicated servo track having recorded thereon a servo signal having a fixed spatial wavelength, and magnetic playback apparatus comprising a servo tracking head having an elongated tapered transducing gap transverse to the dedicated servo track. The transducing gap has (1) a relatively small magnetic gap length, at a first end of the gap, which is less than the spatial wavelength of the recorded signal, and (2) a relatively large magnetic gap length, at a second opposing end of the gap, which is greater than the spatial wavelength of the recorded servo signal. The servo head is in a desired tracking position when the segment of the tapered gap aligned with the servo track has a magnetic gap length that is equal to the spatial wavelength of the servo signal.
    • 跟踪控制装置包括磁记录介质(磁盘或磁带),其包括其上记录有具有固定空间波长的伺服信号的专用伺服磁道,以及包括伺服跟踪头的磁性重放装置,该伺服跟踪头具有横向于专用伺服的细长锥形换能间隙 跟踪。 换能间隙具有(1)在间隙的第一端处小于记录信号的空间波长的相对较小的磁隙长度,和(2)相对较大的磁隙长度,在第二相对端 的间隙,其大于记录的伺服信号的空间波长。 当与伺服轨道对准的锥形间隙的段具有等于伺服信号的空间波长的磁隙长度时,伺服头处于期望的跟踪位置。