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    • 7. 发明授权
    • Data recording apparatus
    • 数据记录装置
    • US06181495B2
    • 2001-01-30
    • US09270605
    • 1999-03-17
    • Tetsuro MakiseTeruyuki Yoshida
    • Tetsuro MakiseTeruyuki Yoshida
    • G11B509
    • G11B20/10194G11B5/0086G11B5/035G11B5/09
    • In a data recording apparatus, the period of the first clock signal corresponding to the record data is multiplied by the stated numeric corresponding to the transfer rate with the clock signal forming structure, so that the second clock signal is formed. And, on the basis of the record data and the second clock signal, the recording current corresponding to the transfer rate that is formed by highlighting the high-frequency component in accordance with the transfer rate and by limiting the band in accordance with the transfer rate is generated with the recording current generating structure. Then, the recording data is recorded on the recording medium with the recording structure on the basis of the recording current, therefore, even if the transfer rate varies, it is able to equalize highlighting operation of high-frequency component of the recording current and to equalize band limitation so as to keep the frequency characteristics approximately constant. In this way, it is able to form nearly identical magnetization pattern on a recording medium even in the case where the transfer rate varies.
    • 在数据记录装置中,对应于记录数据的第一时钟信号的周期与对应于传输速率的规定数值乘以时钟信号形成结构,从而形成第二时钟信号。 并且,根据记录数据和第二时钟信号,记录与根据传送速率突出高频分量形成的传送速率相对应的记录电流,并根据传送速率限制频带 用记录电流产生结构产生。 然后,基于记录电流将记录数据记录在具有记录结构的记录介质上,因此,即使传输速率变化,也能够使记录电流的高频分量的高亮操作相等, 均衡频带限制,以保持频率特性近似恒定。 以这种方式,即使在传输速率变化的情况下,也能够在记录介质上形成几乎相同的磁化模式。
    • 8. 发明授权
    • Apparatus for recording a digital signal onto a recording medium at one
of a plurality of data recording rates
    • 用于以多种数据记录速率中的一种将数字信号记录到记录介质上的装置
    • US5559643A
    • 1996-09-24
    • US394261
    • 1995-02-24
    • Tetsuro MakiseTeruyuki Yoshida
    • Tetsuro MakiseTeruyuki Yoshida
    • G11B5/09
    • G11B5/09
    • A data recording apparatus for recording a digital signal onto a magnetic recording medium at one of a plurality of data recording rates. The apparatus comprises a detection device for detecting a change in value of the digital signal, a first variable current source for generating a first current having a value which is varied in response to a data rate of the digital signal, a second variable current source for generating a second current, a recording head for recording the signal into the magnetic recording medium, a current output device for outputting the second current or an added value of the first current and the second current in response to detection results of the detection device, and a recording head driving device for driving the recording head in response to an output of the current output device and the digital signal so as to enable recording at a desired data rate.
    • 一种数据记录装置,用于以多种数据记录速率中的一种将数字信号记录到磁记录介质上。 该装置包括用于检测数字信号的值的变化的检测装置,用于产生具有响应数字信号的数据速率变化的值的第一电流的第一可变电流源,用于 产生第二电流,用于将信号记录到磁记录介质中的记录头,响应于检测装置的检测结果输出第二电流或第一电流和第二电流的附加值的电流输出装置,以及 记录头驱动装置,用于响应于当前输出装置的输出和数字信号驱动记录头,以便能够以期望的数据速率进行记录。