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33 条记录 (耗时 0.021 秒)

    Circuit for processing waveform of reproduced signal in magnetic reproducing apparatus
    1.
    发明授权
    Circuit for processing waveform of reproduced signal in magnetic reproducing apparatus 失效
    用于处理磁再现装置中再现信号的波形的电路

    公开(公告)号：US4755891A

    公开(公告)日：1988-07-05

    申请号：US898212

    申请日：1986-08-20

    申请人： Yasuhiro Katoh ,  Fumio Kugiya ,  Hajime Aoi

    发明人： Yasuhiro Katoh ,  Fumio Kugiya ,  Hajime Aoi

    IPC分类号： G11B5/09 ,  G11B5/02 ,  G11B20/10 ,  G11B5/23

    CPC分类号： G11B20/10046 ,  G11B20/10009 ,  G11B5/02

    摘要： In a waveform processing circuit comprising a delay line for delaying a signal outputted from a ring type magnetic head reproducing a perpendicular magnetization recording, an attenuator for attenuating the signal delivered out of the ring type magnetic head, and a differential amplifier for receiving outputs from the delay line and the attenuator, wherein a waveform of the signal is processed to discriminate a position of magnetization transition based on the waveform of the signal; the delay time .tau. of the delay line is selected to satisfyv.multidot..tau..ltoreq.gwhere, v is a relative speed between the recording medium and the magnetic head and g indicates the gap length of the magnetic head.

    摘要翻译： 在波形处理电路中，包括用于延迟从再现垂直磁化记录的环形磁头输出的信号的延迟线，用于衰减从环型磁头输出的信号的衰减器，以及差分放大器，用于接收来自 延迟线和衰减器，其中处理信号的波形以基于信号的波形来识别磁化转变的位置; 选择延迟线的延迟时间τ以满足vx tau，其中v是记录介质和磁头之间的相对速度，g表示磁头的间隙长度。

    Magnetic head
    2.
    发明授权
    Magnetic head 失效
    磁头

    公开(公告)号：US4777553A

    公开(公告)日：1988-10-11

    申请号：US919424

    申请日：1986-10-16

    申请人： Hajime Aoi ,  Fumio Kugiya ,  Takashi Tamura

    发明人： Hajime Aoi ,  Fumio Kugiya ,  Takashi Tamura

    IPC分类号： G11B5/02 ,  G11B5/127 ,  G11B5/31 ,  G11B5/39 ,  G11B11/10 ,  G11B11/105 ,  G11B5/12 ,  G11B5/22

    CPC分类号： G11B5/1278 ,  G11B11/10547 ,  G11B5/39 ,  G11B5/3183

    摘要： A magnetic head for reading-out information magnetically recorded on a magnetic recording medium in a waveform varying between two different phases. The magnetic head includes at least one block of high magnetic permeability disposed adjacent to and directly facing a surface of the magnetic recording medium to be read-out so as to provide a magnetic path for passing therethrough magnetic flux emanating from the magnetic record on the magnetic recording medium. A magnetic material member is disposed adjacent to the at least one block so as to cause the magnetic flux emanating from the magnetic record on the magnetic recording medium to pass therethrough and is responsive to transition of the magnetic flux corresponding to variation from one phase to another phase in the waveform representing the recorded information so as to provide a predetermined physical effect. Further, a detecting arrangement is provided for the detecting the predetermined physical effect.

    摘要翻译： 一种磁头，用于以两个不同相位之间变化的波形读出磁记录在磁记录介质上的信息。 磁头包括至少一个高磁导率块，其邻近并直接面向待读出的磁记录介质的表面，以便提供一个磁路，用于通过从磁记录发出的磁通量磁化 记录介质。 磁性材料构件被布置成与至少一个块相邻，以便使从磁记录介质上的磁记录发出的磁通量通过其中，并响应于对应于从一个相变到另一相的磁通的转变 表示记录信息的波形相位，以便提供预定的物理效果。 此外，提供了用于检测预定物理效果的检测装置。

    Method of head positioning and magnetic recording disk drive using the same
    3.
    发明授权
    Method of head positioning and magnetic recording disk drive using the same 失效
    磁头定位和磁记录磁盘驱动器的使用方法

    公开(公告)号：US5568331A

    公开(公告)日：1996-10-22

    申请号：US603320

    申请日：1990-10-25

    申请人： Kyo Akagi ,  Masaaki Futamoto ,  Fumio Kugiya ,  Yoshinori Miyamura ,  Hisashi Takano ,  Yoshibumi Matsuda ,  Mikio Suzuki ,  Takeshi Nakao ,  Takayuki Munemoto ,  Hirotsugu Fukuoka ,  Makoto Aihara ,  Tokuho Takagaki ,  Hajime Aoi ,  Yosuke Seo

    发明人： Kyo Akagi ,  Masaaki Futamoto ,  Fumio Kugiya ,  Yoshinori Miyamura ,  Hisashi Takano ,  Yoshibumi Matsuda ,  Mikio Suzuki ,  Takeshi Nakao ,  Takayuki Munemoto ,  Hirotsugu Fukuoka ,  Makoto Aihara ,  Tokuho Takagaki ,  Hajime Aoi ,  Yosuke Seo

    IPC分类号： G11B5/584 ,  G11B5/596

    CPC分类号： G11B5/59688 ,  G11B5/584

    摘要： A method and device of head positioning in an information recording/reading device in which a magnetic recording medium with data tracks for recording information thereon is provided and a magnetic head is positioned on the data track to record/read out the information, wherein a data signal is recorded in the data recording layer of said recording medium, a servo signal is recorded in the servo signal recording layer located below said data signal recording layer, said data signal is read out using a data magnetic head whereas said servo signal is read out using a servo magnetic head, and the frequency of said servo signal is within the range of the gap-null frequency of said data magnetic head whereas the frequency of said data signal is within the range of the gap-null frequency of said servo magnetic head, and said magnetic head is positioned on the data track on the basis of said servo signal. A method and device of head positioning in an information recording/reading device in which a magnetic recording medium with data tracks for recording information thereon is provided and a magnetic head is positioned on the data track to record/read out the information, wherein the data tracks are discrete tracks in which adjacent data tracks are separated by a groove located therebetween, a data signal is recorded on the data track of said recording medium, a servo signal is recorded on the servo tracks of grooves between said adjacent data tracks, and said magnetic head is positioned on the data track on the basis of said servo signal.

    摘要翻译： 一种在信息记录/读取装置中头部定位的方法和装置，其中提供具有用于记录信息的数据轨道的磁记录介质，并且磁头位于数据轨道上以记录/读出信息，其中数据 信号被记录在所述记录介质的数据记录层中，伺服信号被记录在位于所述数据信号记录层下方的伺服信号记录层中，所述数据信号使用数据磁头读出，而所述伺服信号被读出 使用伺服磁头，并且所述伺服信号的频率在所述数据磁头的间隙零频率的范围内，而所述数据信号的频率在所述伺服磁头的间隙空位频率的范围内 并且所述磁头基于所述伺服信号位于数据轨道上。 一种在信息记录/读取装置中头部定位的方法和装置，其中提供具有用于记录信息的数据轨道的磁记录介质，并且磁头位于数据轨道上以记录/读出信息，其中数据 轨道是离散轨道，其中相邻数据轨道由位于其间的凹槽分开，数据信号被记录在所述记录介质的数据轨道上，伺服信号被记录在所述相邻数据轨道之间的凹槽的伺服轨道上，并且所述 磁头基于所述伺服信号位于数据轨道上。

    Array disk subsystem
    6.
    发明授权
    Array disk subsystem 失效
    阵列磁盘子系统

    公开(公告)号：US06243824B1

    公开(公告)日：2001-06-05

    申请号：US08355210

    申请日：1994-12-09

    申请人： Hitoshi Kakuta ,  Yoshihisa Kamo ,  Hajime Aoi

    发明人： Hitoshi Kakuta ,  Yoshihisa Kamo ,  Hajime Aoi

    IPC分类号： H02H305

    CPC分类号： G06F11/1076 ,  G06F3/0601 ,  G06F11/1466 ,  G06F2003/0692 ,  G06F2211/109

    摘要： An array disk subsystem including a command selector for separating a signal from a host into a data item and a command, a data dividing unit for subdividing the data item, an ECC generator for producing an ECC for each of the obtained subdata items, a group of data disks for respectively storing thereon the subdata items and the ECCs, a command interpreting unit for interpreting the command, an I/O counter for counting I/O commands in the command, a backup processor for requesting a backup command based on count information of the I/O counter, and a backup unit responsive to the backup command for sequentially reading the subdata items and the ECCs from the data disks to record therein the subdata items and the ECCs.

    摘要翻译： 一种阵列磁盘子系统，包括用于将信号从主机分离为数据项和命令的命令选择器，用于细分数据项的数据划分单元，用于为每个所获得的子数据项产生ECC的ECC产生器， 用于分别存储子数据项和ECC的数据磁盘，用于解释命令的命令解释单元，用于对命令中的I / O命令进行计数的I / O计数器，用于根据计数信息请求备份命令的备份处理器 的I / O计数器，以及响应于备份命令的备份单元，用于从数据盘顺序读取子数据项和ECC，以在其中记录子数据项和ECC。

    Peak detection method and apparatus therefor
    8.
    发明授权
    Peak detection method and apparatus therefor 失效
    峰值检测方法及其装置

    公开(公告)号：US5287228A

    公开(公告)日：1994-02-15

    申请号：US738627

    申请日：1991-07-31

    申请人： Hideki Sawaguchi ,  Yasuhide Ouchi ,  Hajime Aoi

    发明人： Hideki Sawaguchi ,  Yasuhide Ouchi ,  Hajime Aoi

    IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B20/14 ,  G11B5/02

    CPC分类号： G11B20/10212 ,  G11B20/1423 ,  G11B20/1426 ,  G11B5/09

    摘要： The time interval/amplitude level difference between sequential peaks in waveforms of first reproducing signals from a recording medium is detected and stored in a storage. The time interval/amplitude level difference between peaks in a waveform of a second reproducing signal from the recording medium is detected and compared with the time interval/amplitude level difference stored in the storage to thereby perform peak detection in the waveforms thereof. An original bit train of the first reproducing signal corresponding to a maximum-likelihood waveform selected among the waveforms of the first reproducing signals is given as a standardized signal. Data are provided to represent the time interval/amplitude level difference between the sequential peaks in the waveforms of the reproducing signals in a range of electromagnetic signal interference on the recording medium.

    摘要翻译： 来自记录介质的第一再现信号的波形中的连续峰值之间的时间间隔/振幅电平差被检测并存储在存储器中。 检测来自记录介质的第二再现信号的波形中的峰值之间的时间间隔/振幅电平差，并将其与存储在存储器中的时间间隔/振幅电平差进行比较，从而在其波形中进行峰值检测。 将与第一再现信号的波形中选择的最大似然波形对应的第一重放信号的原始比特串作为标准化信号。 提供数据以表示记录介质上的电磁信号干扰范围内的再现信号的波形中的顺序峰值之间的时间间隔/幅度电平差。

    Perpendicular magnetic recording medium
    10.
    发明授权
    Perpendicular magnetic recording medium 有权
    垂直磁记录介质

    公开(公告)号：US08323808B2

    公开(公告)日：2012-12-04

    申请号：US11032691

    申请日：2005-01-10

    申请人： Osamu Kitakami ,  Yutaka Shimada ,  Satoshi Okamoto ,  Takehito Shimatsu ,  Hajime Aoi ,  Hiroaki Muraoka ,  Yoshihisa Nakamura ,  Hiroyuki Uwazumi ,  Tadaaki Oikawa

    发明人： Osamu Kitakami ,  Yutaka Shimada ,  Satoshi Okamoto ,  Takehito Shimatsu ,  Hajime Aoi ,  Hiroaki Muraoka ,  Yoshihisa Nakamura ,  Hiroyuki Uwazumi ,  Tadaaki Oikawa

    IPC分类号： G11B5/66

    CPC分类号： G11B5/66 ,  G11B5/65 ,  G11B5/656

    摘要： There is provided a perpendicular magnetic recording medium according to which both the thermal stability of the magnetization is good and writing with a magnetic head is easy, and moreover the SNR is improved. In the case of a perpendicular magnetic recording medium comprising a nonmagnetic substrate 1, and at least a nonmagnetic underlayer 2, a magnetic recording layer 3 and a protective layer 4 formed in this order on the nonmagnetic substrate 1, the magnetic recording layer 3 comprises a low Ku region 31 layer having a perpendicular magnetic anisotropy constant (Ku value) of not more than 1×105 erg/cm3, and a high Ku region 32 layer having a Ku value of at least 1×106 erg/cm3. Moreover, the magnetic recording layer 3 is made to have therein nonmagnetic grain boundaries that contain a nonmagnetic oxide and magnetically isolate crystal grains, which are made of a ferromagnetic metal, from one another.

    摘要翻译： 提供了一种垂直磁记录介质，根据该磁记录介质，磁化的热稳定性都很好，并且用磁头进行写入容易，此外SNR提高。 在包括非磁性基板1和至少一个非磁性底层2，在非磁性基板1上依次形成的磁记录层3和保护层4的垂直磁记录介质的情况下，磁记录层3包括 具有不大于1×105erg / cm3的垂直磁各向异性常数（Ku值）的低Ku区31层和Ku值至少为1×106erg / cm3的高Ku区32层。 此外，使磁记录层3具有包含非磁性氧化物的非磁性晶界，并且将由铁磁性金属制成的晶粒彼此磁分离。