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36 条记录 (耗时 0.022 秒)

    High speed seek sector servo magnetic disk drive unit
    1.
    发明授权
    High speed seek sector servo magnetic disk drive unit 失效
    高速搜索扇区伺服磁盘驱动单元

    公开(公告)号：US5132854A

    公开(公告)日：1992-07-21

    申请号：US408197

    申请日：1989-09-15

    申请人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi

    发明人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi

    IPC分类号： G11B21/08 ,  G11B5/55

    CPC分类号： G11B5/5547 ,  G11B5/5565

    摘要： A disk drive unit is disclosed, which comprises a recording medium having more than two disk-shaped recording faces disposed on each other with an interval; information tracks disposed along the periphery on the more than two recording faces and servo signal fields on the recording faces, in the peripheral direction for different recording faces; more than two heads reading out servo information from the servo signal fields on the more than two recording faces; head moving means for moving the heads in the radial direction of the recording faces, linked with each other; means for obtaining position signals on the recording faces at different points of time for different heads on the basis of the servo signals; means for obtaining information on the relative velocity of the heads to the recording faces from the position signals at different points of time for different recording faces, and control means for effecting the velocity control by means of the head moving means on the basis of the information on the relative velocity.

    摘要翻译： 公开了一种磁盘驱动单元，其包括具有多于两个盘形记录面的记录介质，所述记录介质以间隔彼此配置; 信息轨道沿着周边设置在记录面上的两个以上记录面和伺服信号场，沿着不同记录面的周边方向; 两个以上的磁头从两个以上的记录面的伺服信号场读出伺服信息; 头部移动装置，用于使记录面的径向移动头部; 用于根据所述伺服信号在不同的时刻针对记录面获取位置信号的装置; 用于从针对不同记录面的不同时间点的位置信号获得关于头到记录面的相对速度的信息的装置，以及用于通过头部移动装置基于信息进行速度控制的控制装置 相对速度。

    Magnetic disk apparatus of constant-density recording type, magnetic disk used therefor and servo-writing device for patterning on the magnetic disk
    2.
    发明授权
    Magnetic disk apparatus of constant-density recording type, magnetic disk used therefor and servo-writing device for patterning on the magnetic disk 失效
    恒定密度记录型磁盘装置，用于其的磁盘和用于在磁盘上图形化的伺服写入装置

    公开(公告)号：US5193034A

    公开(公告)日：1993-03-09

    申请号：US551808

    申请日：1990-07-12

    申请人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi ,  Makoto Saito

    发明人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi ,  Makoto Saito

    IPC分类号： G11B5/596 ,  G11B20/12 ,  G11B27/30

    CPC分类号： G11B5/59633 ,  G11B20/1217 ,  G11B20/1258 ,  G11B27/3027 ,  G11B2020/1282 ,  G11B2220/20 ,  G11B5/59655

    摘要： A constant-density type of magnetic disk apparatus is made up of a plurality of magnetic disks, wherein at least one of the surfaces of the magnetic disks is a servo face divided into a plurality of zones in the radial direction of the disks. A magnetic disk used in this apparatus and a servo-writing device for making this magnetic disk are also disclosed. In the magnetic disk apparatus and the magnetic disk, servo information regions and clock information regions are alternately provided on the servo face in the circumferential direction of the disks. The servo information regions are arranged radially with respect to the rotation center of the disks and each of the clock information regions includes a plurality of magnetic transitions representative of clocks, the number of which is different for each of the divided zones. A servo PLL circuit is provided to generate a servo clock signal on the basis of the signal reproduced from each of the servo information regions, and a write PLL is also provided to generate a write clock signal on the basis of the signal reproduced from each of the clock information regions. Also disclosed is a disk for use in a constant density-recording type magnetic disk apparatus, wherein a dummy track is provided along a zone boundary on the data face embedded with servo patterns of the disk.

    摘要翻译： 恒定密度型的磁盘装置由多个磁盘构成，其中磁盘的至少一个表面是在盘的径向方向上分成多个区域的伺服面。 本发明还公开了一种用于本装置的磁盘和用于制造该磁盘的伺服写入装置。 在磁盘装置和磁盘中，伺服信息区域和时钟信息区域在盘的圆周方向上的伺服面上交替地设置。 伺服信息区域相对于盘的旋转中心径向地布置，并且每个时钟信息区域包括表示每个分割区域的数量不同的多个时钟的磁跃迁。 提供伺服PLL电路以根据从每个伺服信息区再现的信号产生伺服时钟信号，并且还提供写入PLL以根据从每个伺服信息区再现的信号来产生写入时钟信号 时钟信息区。 还公开了一种在恒定密度记录型磁盘装置中使用的盘，其中沿着镶嵌有盘的伺服图案的数据面上的区域边界设置虚拟轨道。

    Digital magnetic writing and reading apparatus
    4.
    发明授权
    Digital magnetic writing and reading apparatus 失效
    数字磁读写装置

    公开(公告)号：US5337198A

    公开(公告)日：1994-08-09

    申请号：US909997

    申请日：1992-07-07

    申请人： Nobumasa Nishiyama ,  Toshiaki Tsuyoshi ,  Hajime Aoi ,  Tetsuji Kameoka ,  Masaya Tanaka ,  Kazuhisa Shiraishi

    发明人： Nobumasa Nishiyama ,  Toshiaki Tsuyoshi ,  Hajime Aoi ,  Tetsuji Kameoka ,  Masaya Tanaka ,  Kazuhisa Shiraishi

    IPC分类号： G11B5/09 ,  G11B5/035

    CPC分类号： G11B5/09 ,  G11B20/10046

    摘要： A waveform equalizer for processing a signal read by a magnetic head from a magnetic written medium includes a slimming circuit which, in turn, has a first delay unit for delaying the read signal, a first attenuator connected in parallel with the first delay unit, a first differentiating circuit for receiving the output from the first delay unit and the output from the first attenuator, and a resistor connected to a first delay unit side input of the first differential circuit; and a pseudo-peak elimination circuit connected in series with the slimming circuit and including a circuit for separating the from the read signal the read signal or a signal reverse in phase to the read signal, a second delay unit for delaying the separated signal, a second attenuator for attenuating the amplitude of the separated signal, and a second differential circuit for receiving the read signal and the separated, delayed and attenuated signal.

    摘要翻译： 用于处理由磁性写入介质由磁头读取的信号的波形均衡器包括减弱电路，该减幅电路又具有用于延迟读取信号的第一延迟单元，与第一延迟单元并联连接的第一衰减器， 用于接收来自第一延迟单元的输出和来自第一衰减器的输出的第一微分电路，以及连接到第一差分电路的第一延迟单元侧输入的电阻器; 以及与所述减肥电路串联连接的伪峰值消除电路，并且包括用于将读取信号或相反相反的信号与读取信号分离的读取信号的电路，用于延迟分离的信号的第二延迟单元， 第二衰减器，用于衰减分离信号的振幅;以及第二差分电路，用于接收读取信号和分离的，延迟和衰减的信号。

    Light spot position control system and method by sampled servo
    9.
    发明授权
    Light spot position control system and method by sampled servo 失效
    光点位置控制系统及采样伺服方式

    公开(公告)号：US4872152A

    公开(公告)日：1989-10-03

    申请号：US131643

    申请日：1987-12-11

    申请人： Toshiaki Tsuyoshi ,  Masatoshi Ohtake ,  Wasao Takasugi ,  Seiji Yonezawa

    发明人： Toshiaki Tsuyoshi ,  Masatoshi Ohtake ,  Wasao Takasugi ,  Seiji Yonezawa

    IPC分类号： G02B7/28 ,  G11B7/09 ,  G11B21/10

    CPC分类号： G11B7/0906

    摘要： In a light spot position control system and method in which a control of the irradiation position of a light spot such as a focusing control, a jitter correction and/or a tracking control is made through a sampling control, a newly sampled error value is compared with a one-preceding sampled value. When a difference between both the values is within a range of a predetermined width, the newly sampled value is used as a new sample value as it is. When the difference exceeds the range of the predetermined width, a sum of the one-preceding sampled value and the predetermined width is used as a new sample value. Thereby, the influence of erroneous samples is reduced.

    摘要翻译： 在通过采样控制进行聚焦控制，抖动校正和/或跟踪控制等光点的照射位置的控制的光点位置控制系统和方法中，对新采样的误差值进行比较 具有一个先前的采样值。 当两个值之间的差在预定宽度的范围内时，新采样的值被原样用作新的采样值。 当差超过预定宽度的范围时，将一次取样值与预定宽度的和用作新的样本值。 从而减少错误样品的影响。

    Method of recording and reproduction of information using a recording medium available for information overlap recording, a recording medium and a recording and reproducing apparatus using the method
    10.
    发明授权
    Method of recording and reproduction of information using a recording medium available for information overlap recording, a recording medium and a recording and reproducing apparatus using the method 失效
    使用可用于信息重叠记录的记录介质，记录介质和使用该方法的记录和再现装置来记录和再现信息的方法

    公开(公告)号：US5218599A

    公开(公告)日：1993-06-08

    申请号：US412474

    申请日：1989-09-26

    申请人： Toshiaki Tsuyoshi ,  Yoshito Tsunoda ,  Hiromichi Fujisawa

    发明人： Toshiaki Tsuyoshi ,  Yoshito Tsunoda ,  Hiromichi Fujisawa

    IPC分类号： G11B11/10 ,  G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B7/007 ,  G11B7/24 ,  G11B7/30 ,  G11B11/105 ,  G11B13/00 ,  G11B13/04 ,  G11B20/12 ,  G11B27/32

    CPC分类号： G11B11/10584 ,  G11B11/10597 ,  G11B13/045 ,  G11B27/327 ,  G11B2020/1259 ,  G11B2220/211 ,  G11B2220/2525 ,  G11B7/0079

    摘要： A recording medium is provided with a recording film having opto-magnetic characteristics formed on the substrate, with first information being recorded in advance in the form of pit strings of a phase structure. Second information is recorded over the first information through the application of a magnetic field with polarities corresponding to the second information in the presence of the irradiation of a high-power radiation beam, without damaging the record of the first information. The first and second information are produced independently and simultaneously with a single spot in the same area by use of different signal reproduction mechanisms for the first information and second information. The first information (ROM information) is reproduced as the variation in the amount (intensity) of the reflected light from the opto-magnetic recording film, and the second information (RAM information) is reproduced by detecting the rotational angle of the reflected light, based on the Kerr effect, from the opto-magnetic film concurrently with the reproduction of the first information using a single spot.

    摘要翻译： 记录介质设置有具有形成在基板上的光磁特性的记录膜，其中预先以相位结构的凹坑串的形式记录第一信息。 在存在高功率辐射束的照射的情况下，通过施加具有与第二信息对应的极性的磁场，在第一信息上记录第二信息，而不损害第一信息的记录。 通过对于第一信息和第二信息使用不同的信号再现机制，第一和第二信息与同一区域中的单个点独立地同时产生。 第一信息（ROM信息）被再现为来自光电记录膜的反射光的量（强度）的变化，并且通过检测反射光的旋转角度再现第二信息（RAM信息） 基于克尔效应，从与使用单个点的第一信息的再现同时的光磁膜。