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    • 48. 发明授权
    • Recording and reading space control between a read/write probe and a
recording medium
    • 在读/写探头和记录介质之间记录和读取空间控制
    • US5375114A
    • 1994-12-20
    • US212641
    • 1994-03-14
    • Katsunori HatanakaKunihiro SakaiHaruki KawadaRyo Kuroda
    • Katsunori HatanakaKunihiro SakaiHaruki KawadaRyo Kuroda
    • G01Q30/04G11B9/00G11B9/14G11B19/02G11B7/00
    • G11B9/14G11B19/02G11B9/1445B82Y10/00Y10S977/851Y10S977/947
    • In order to effect the reading-out of a signal from a recording medium at a high speed and without the collision of a probe electrode, the control of the spacing between the probe electrode and the signal recording layer of the recording medium is effected by sampling a tunnel current detected by the probe electrode at the timing of a reproduction clock, and reproduction is effected with this sampled value as a reference. Also, in order to effect information recording with good reproducibility and at high density, the control variable of a servo control circuit for controlling the spacing between the probe electrode and the recording layer is changed over during the periods before and after a writing pulse is applied to the probe electrode. Also, in order to effect re-recording reliably, the prior recorded state at the re-writing position is detected, and from the result of this detection, an optimal servo control variable, the waveform of a pulse voltage applied, etc. are set.
    • 为了实现从记录介质高速读出信号并且没有探针电极的碰撞,探针电极和记录介质的信号记录层之间的间隔的控制通过采样 在再现时钟的定时由探针电极检测到的隧道电流,并以该采样值作为参考进行再现。 此外,为了以良好的再现性和高密度进行信息记录,用于控制探针电极和记录层之间的间隔的伺服控制电路的控制变量在写入脉冲之前和之后的时段期间被切换 到探针电极。 此外,为了可靠地重新记录,检测重写位置的先前记录状态,并且从该检测结果中,设置最佳伺服控制变量,设置脉冲电压的波形等 。