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11. 发明申请

WO1997027588A1 MAGNETIC DISK APPARATUS 审中-公开
标题翻译：磁盘设备
公开(公告)号：WO1997027588A1
公开(公告)日：1997-07-31
申请号：PCT/JP1996000095
申请日：1996-01-22
申请人： HITACHI, LTD. , YAMAGUCHI, Takashi , TSUNETA, Katsuhiro , ONOYAMA, Katsumoto , ARAI, Tsuyoshi , FUJII, Yoshikatsu , NUMASATO, Hidehiko , HAMADA, Yosuke , KOBAYASHI, Masahito
发明人： HITACHI, LTD.
IPC分类号： G11B21/10
CPC分类号： G11B5/553
摘要： A sector servo magnetic disk apparatus comprising a sensor, such as an accelerometer (17), for detecting the state of a magnetic head or a magnetic head indication member at intervals equal to and shorter than the sampling period of a servo signal (14) converted to an output voltage proportional to a position by a demodulation circuit. The acceleration signal (19) and the servo signal (14) are inputted through A/D convertors (18 and 19), respectively, to a microprocessor (12) including a state estimation device (30) for estimating the state quantity of a control object. The output signal from the microprocessor (12) is supplied to the control object (25) through a feedback transfer function (28), a D/A convertor (15) and a buffer amplifier (16) while the servo signal (14) is inputted to a compensator (29), so that a main arithmetic loop is formed. According to this construction, the accelerometer (17) is fitted to the magnetic head or the member for indicating the magnetic head such as a carriage to detect the acceleration quantity. Accordingly, the occurrence of mechanical resonance of the carriage, for example, can be reduced, and detection accuracy of a speed signal can be improved. In this way, control performance of the servo control system can be improved.
摘要翻译：一种扇区伺服磁盘装置，包括诸如加速度计（17）的传感器，用于以等于和短于转换的伺服信号（14）的采样周期的间隔检测磁头或磁头指示部件的状态到由解调电路与位置成比例的输出电压。加速度信号（19）和伺服信号（14）分别通过A / D转换器（18和19）输入到微处理器（12），微处理器（12）包括用于估计控制的状态量的状态估计装置目的。来自微处理器（12）的输出信号通过反馈传递函数（28），D / A转换器（15）和缓冲放大器（16）被提供给控制对象（25），同时伺服信号（14）是输入到补偿器（29），从而形成主运算环路。根据这种结构，将加速度计17安装到磁头或用于指示诸如滑架的磁头的构件以检测加速度。因此，例如可以减少滑架的机械谐振的发生，并且可以提高速度信号的检测精度。以这种方式，可以提高伺服控制系统的控制性能。

12. 发明申请

WO1994020954A1 MAGNETIC DISK APPARATUS AND METHOD OF PRODUCTION THEREOF 审中-公开
标题翻译：磁盘设备及其生产方法
公开(公告)号：WO1994020954A1
公开(公告)日：1994-09-15
申请号：PCT/JP1994000350
申请日：1994-03-04
申请人： SONY CORPORATION , WATANABE, Kenjiro , TAKEDA, Toru , SEKO, Satoru , KAWAZOE, Kazushige , MUTO, Takayasu , MORITA, Osamu , HAYASHI, Nobuhiro , ISHIDA, Takehisa , ISHIOKA, Hideaki , YAMAKOSHI, Takamichi
发明人： SONY CORPORATION
IPC分类号： G11B05/09
CPC分类号： G11B20/1833 , G11B5/0086 , G11B5/012 , G11B5/5526 , G11B5/553 , G11B5/59605 , G11B5/59627 , G11B5/59633 , G11B5/82 , G11B20/10009 , G11B20/10194 , G11B20/1252 , G11B20/1258 , G11B25/043 , G11B27/19 , G11B27/3027 , G11B33/1486 , G11B2020/1277 , G11B2020/1292 , G11B2220/20
摘要： A magnetic disk apparatus suitable for use as a hard disk apparatus in a computer system. The apparatus includes a disk-like medium having a magnetic film formed on a surface, which information is recorded on or reproduced from; and magnetic heads (20 - 31) for recording on or reproducing from the information the disk-like medium. The disk-like medium has data recording regions (20 - 41D) and control signal recording regions (20 - 40), (20 - 41H). In the data recording regions, data tracks are raised and adjacent data tracks are separated by recessing guard bands (20 - 20). In the control signal recording region, on the other hand, tracking marks (20 - 12), (20 - 13) for tracking control of the magnetic heads, track number marks (20 - 71) for stipulating the tracks , track numbers (20 - 41b1), (20 - 41b2) and clock marks (20 - 11) for equidistantly dividing a circumference are formed in projections and recesses along the paths (21 - 21) of the magnetic heads. In this apparatus, the guard band is recessed with respect to the track. Accordingly, the guard band needs not be expanded so as to reduce cross-talk, and a recording capacity can be increased by reducing the track pitch. Because the tracking mark and the track number mark or the clock mark are formed in projections and recesses along the paths of the magnetic heads, accurate access becomes possible even when the track pitch is reduced.
摘要翻译：适用于计算机系统中的硬盘装置的磁盘装置。该装置包括具有形成在表面上的磁性膜的盘状介质，该信息被记录在其上或从其再现; 以及用于在信息盘上记录或从盘状介质再现信息的磁头（20-31）。盘状介质具有数据记录区（20〜41D）和控制信号记录区（20-40），（20-41H）。在数据记录区域中，数据轨道被升高，并且相邻数据轨道被凹陷保护带（20-20）分开。另一方面，在控制信号记录区域中，用于跟踪磁头的跟踪的跟踪标记（20-12），（20-13），用于规定轨道的轨道号码（20〜71），轨道号（20〜 - 41b1），（20-4lb2）和用于等距分割圆周的时钟标记（20-11）形成在沿着磁头的路径（21-21）的突起和凹陷中。在该装置中，保护带相对于轨道凹陷。因此，不需要扩大保护频带以减少串扰，并且可以通过减小音高来提高记录容量。由于跟踪标记和轨道号标记或时钟标记沿着磁头的路径形成在凸起和凹槽中，所以即使当轨道间距减小时也能够进行准确的访问。

13. 发明申请

WO01073763A1 STORAGE MEDIUM FOR THERMALLY-ASSISTED MAGNETIC RECORDING 审中-公开
标题翻译：用于热辅助磁记录的存储介质
公开(公告)号：WO01073763A1
公开(公告)日：2001-10-04
申请号：PCT/EP2001/003494
申请日：2001-03-27
IPC分类号： G11B5/09 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/55 , G11B5/596 , G11B5/74 , G11B5/82 , G11B5/855 , G11B20/12
CPC分类号： G11B5/012 , G11B5/00 , G11B5/1278 , G11B5/553 , G11B5/59644 , G11B5/74 , G11B5/82 , G11B5/855 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A storage medium for thermally-assisted magnetic recording has a recording layer which substantially parallel tracks for recording information. The recording layer includes a series of recording regions (51, 52), each region comprising a plurality of tracks for magnetically recording information. The tracks (53) in a region have a pitch p, and a region extends a distance 1/2 p beyond a centre line of the outermost track of the region. Neighbouring regions are separated from one another by magnetically non-recording areas (54) having a width substantially equal to or larger than the pitch p. The writing of one region does not have thermal cross-talk on other regions.
摘要翻译：用于热辅助磁记录的存储介质具有基本平行的用于记录信息的轨道的记录层。记录层包括一系列记录区域（51,52），每个区域包括用于磁记录信息的多个轨道。区域中的轨道（53）具有间距p，并且区域延伸超出该区域的最外侧轨道的中心线的距离1/2p。相邻区域通过具有基本上等于或大于间距p的宽度的磁性非记录区域（54）彼此分离。一个地区的写作在其他地区没有热量串扰。

14. 发明申请

WO0049606A3 OPTIMAL READER/WRITER OFFSETS AND WRITE FAULT THRESHOLDS IN A DISC DRIVE 审中-公开
标题翻译：在光盘驱动器中优化读取器/写入器偏移量和写入错误阈值
公开(公告)号：WO0049606A3
公开(公告)日：2000-12-14
申请号：PCT/US0004479
申请日：2000-02-22
申请人： SEAGATE TECHNOLOGY
发明人： ABDELNOUR GHASSAN M
IPC分类号： G11B5/012 , G11B5/39 , G11B5/48 , G11B5/55 , G11B5/596 , G11B19/04 , G11B20/10 , G11B21/10 , G11B27/36
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/4886 , G11B5/553 , G11B5/5534 , G11B5/5582 , G11B5/59611 , G11B5/59627 , G11B5/59644 , G11B5/59683 , G11B19/04 , G11B20/10009 , G11B20/10481 , G11B21/106 , G11B27/36 , G11B2005/3996 , G11B2220/20
摘要： A method for optimizing data transfer performance (200) in a disc drive (100) through selection of optimal reader/writer offsets (280, 300) and write fault thresholds (284, 286, 302, 304). During a reader/writer offset calibration operation (222), an initial offset (294) for a selected track (174, 270) is determined as the radial distance between read and write elements (224, 226) of a head (118) as the head is positioned adjacent the selected track. A write threshold analysis (258) selects asymmetric write fault thresholds (296, 298) on opposing sides of the center of the selected track in relation to the ability of the read element to successfully recover data written to the track. The initial offset is adjusted (278) by an adjustment value determined in relation to the asymmetry of the write fault thresholds, and final write fault thresholds are selected (282) to be symmetric about the center of the selected track.
摘要翻译：一种用于通过选择最佳读取器/写入器偏移（280,300）和写入错误阈值（284,286,302,304）来优化磁盘驱动器（100）中的数据传输性能（200）的方法。在读取器/写入器偏移校准操作（222）期间，针对所选轨道（174,270）的初始偏移（294）被确定为头（118）的读取和写入元件（224,226）之间的径向距离为头部位于选定的轨道附近。写入阈值分析（258）相对于读取元件成功恢复写入轨道的数据的能力，选择所选轨道的中心的相对侧上的不对称写入故障阈值（296,298）。通过关于写入故障阈值的不对称性确定的调整值来调整初始偏移（278），并且最终写入故障阈值被选择（282）以关于所选轨道的中心对称。

15. 发明申请

WO99036914A1 APPARATUS FOR RECORDING AND REPRODUCING INFORMATION 审中-公开
标题翻译：记录和复制信息的装置
公开(公告)号：WO99036914A1
公开(公告)日：1999-07-22
申请号：PCT/JP1999/000118
申请日：1999-01-18
IPC分类号： G11B21/10 , G11B5/55
CPC分类号： G11B5/553 , G11B5/5582
摘要： Recording track density is increased to provide large storage by improving positioning accuracy that is limited by the presence of the vibration mode of an actuator (3) for positioning a magnetic head (2). A data recording and reproducing apparatus comprises a magnetic disk (1), a magnetic head (2) movable relative to the magnetic disk (1) to record and reproduce data, an actuator (3) supporting the magnetic head (2) and movable in response to a command, and a controller (4) for controlling the movement of the actuator (3) by producing commands according to the signals read by the magnetic head (2). The actuator (3) has at least one mode of vibration in addition to the mode of rigid-body motion. The controller (4), composed of an internal model including at least one mode of vibration, comprises a state estimation section for estimating the state variables of the modes of vibration and rigid-body motion of the actuator (3) from the signals read by the magnetic head (2) and the controlled variables corresponding to the move command given to the actuator (3), and a generator section for generating controlled variables by using the estimated state variables output from the state estimation section.
摘要翻译：提高记录轨道密度以通过提高定位精度提供大的存储，该定位精度受到用于定位磁头（2）的致动器（3）的振动模式的存在所限制。数据记录和再现装置包括磁盘（1），相对于磁盘（1）可移动以记录和再现数据的磁头（2），支撑磁头（2）的致动器（3）响应于命令，以及控制器（4），用于通过根据由磁头（2）读取的信号产生命令来控制致动器（3）的移动。除了刚体运动的模式之外，致动器（3）还具有至少一种振动模式。由包括至少一种振动模式的内部模型组成的控制器（4）包括状态估计部分，用于根据读取的信号估计致动器（3）的振动模式和刚体动作的状态变量所述磁头（2）和与所述致动器（3）的移动指令对应的受控变量，以及通过使用从所述状态推定部输出的所述估计状态变量来生成受控变量的发电机部。

16. 发明申请

WO99023645A1 OPTOELECTRONIC SENSOR MODULE 审中-公开
标题翻译：光电传感器模块
公开(公告)号：WO99023645A1
公开(公告)日：1999-05-14
申请号：PCT/DE1998/003186
申请日：1998-10-30
IPC分类号： G11B5/55 , G11B5/596 , G11B7/12 , G11B33/14
CPC分类号： G11B5/59677 , G11B5/55 , G11B5/553 , G11B7/123 , G11B33/14
摘要： An optoelectronic sensor module (1) for recognising reflection models on a magnetic data carrier (14). A laser component (8), at least one first sensor-photodetector which is laterally offset in relation to the laser beam axis (19), electrically conductive contact surfaces (20-25) and electrically insulated printed conductors (33) are arranged on or in a silicon submount (3). A lens arrangement (9,10) is provided on the side of the laser emitter component (8) opposite the cooler element (3). Said lens arrangement is secured to the cooling element (3) by at least one supporting bar(29,30).
摘要翻译：光电传感器模块（1），用于在磁介质（14）上检测反射图案。上或在硅基板（3）是一种激光装置（8）横向地从所述激光照射轴（19）的至少一个第一传感器检测器偏移（4，5，6），导电垫（20 - 25）和彼此设置电绝缘的电导体（33）。在由至少一个支撑腹板（29，30）设置在冷却元件（3）的激光发射器装置（8）的相反侧，一个透镜装置（9，10）被固定在冷却元件（3）上。

17. 发明申请

WO98056108A2 AUTOMATIC GAIN CONTROL CIRCUIT, E.G. FOR USE IN A HARD DISK DRIVE 审中-公开
标题翻译：自动增益控制电路用于硬盘驱动器
公开(公告)号：WO98056108A2
公开(公告)日：1998-12-10
申请号：PCT/IB1998/000675
申请日：1998-05-07
IPC分类号： G11B20/10 , G11B5/55 , G11B5/596 , G11B20/18 , G11B20/24 , G11B21/08 , G11B21/10 , H03G3/20 , H03G3/30
CPC分类号： H03G3/30 , G11B5/553 , G11B5/59622 , G11B20/18 , G11B20/24 , G11B21/083 , G11B21/106
摘要： An automatic gain control circuit is disclosed for amplifying an input signal so that it has a specific correspondence with a reference value (Vref). The circuit comprises an input terminal (2) for receiving the input signal, a variable gain amplifier unit (4) for amplifying said input signal in response to a gain control signal. A peak detector unit (14) is provided for detecting peaks in said amplified input signal. The peak detector unit (14) has an attack time constant (Ta) and a decay time constant (Td), so as to supply a peak detector output signal (Vp) which is representative of the amplitude of the peaks in said amplified input signal. Further, a comparator unit (20) is provided for comparing the peak detector output signal (Vp) with said reference value (Vref) so as to derive an error signal (e) therefrom. An integrator unit (30) is further present for integrating the error signal (e) so as to obtain said gain control signal. The peak detector circuit comprises means for controlling said decay time constant in response to said error signal, said means for controlling said decay time constant being adapted to decrease said decay time constant for increasing error signals, in a situation when the peak detector output signal (Vp) is larger than said reference value (Vref). Further, the following relationship is maintained between the attack time constant Td and the decay time constant T4 of the peak detector means: Td = c.Ta , where c is a positive constant and p is a constant larger than 1. p is preferably equal to 2 and for c holds 20
摘要翻译：公开了一种用于放大输入信号以使其与参考值（Vref）具有特定对应关系的自动增益控制电路。电路包括用于接收输入信号的输入端子（2），用于响应于增益控制信号放大所述输入信号的可变增益放大器单元（4）。提供峰值检测器单元（14），用于检测所述放大的输入信号中的峰值。峰值检测器单元（14）具有攻击时间常数（Ta）和衰减时间常数（Td），以便提供表示所述放大输入信号中峰值振幅的峰值检测器输出信号（Vp）。此外，提供比较器单元（20）用于将峰值检测器输出信号（Vp）与所述参考值（Vref）进行比较，从而从其导出误差信号（e）。还存在用于积分误差信号（e）的积分器单元（30），以便获得所述增益控制信号。峰值检测器电路包括用于响应于所述误差信号控制所述衰减时间常数的装置，所述用于控制所述衰减时间常数的装置适于减小所述衰减时间常数以增加误差信号，在峰值检测器输出信号（ Vp）大于所述参考值（Vref）。此外，在峰值检测器装置的攻击时间常数Td和衰减时间常数T4之间保持以下关系：Td = c.Ta p，其中c是正常数，p是大于1的常数p 优选等于2，对于c保持20

18. 发明申请

WO1992011636A1 DEVICE FOR CONTROLLING POSITIONING OF HEAD OF DISC DRIVE AND METHOD OF CONTROLLING THE SAME 审中-公开
标题翻译：用于控制盘驱动器头部定位的装置及其控制方法
公开(公告)号：WO1992011636A1
公开(公告)日：1992-07-09
申请号：PCT/JP1991000870
申请日：1991-06-27
申请人： FUJITSU LIMITED , SUZUKI, Nobuyuki , HASHIMOTO, Shuichi , NEGORO, Toshio
发明人： FUJITSU LIMITED
IPC分类号： G11B21/08
CPC分类号： G11B5/553 , G11B21/083 , G11B21/085 , G11B21/18
摘要： According to the invention, the actual position of a servo head is calculated by converting servo signals (PosN, PosQ) read out from a servo head (31) to digital signals every predetermined time and by making a digital operation circuit (50) operate on the basis of converted digital values. The method of calculating a predicted position of a servo head which is necessary for calculating the actual position of the servo head, is characterized in that the moving speed of the servo head is calculated from the previous position and the current one, and a predicted next position of the servo head is calculated from the calculated moving speed and the time interval until the next time of calculating. Also, this invention is characterized in that when the actual position of the servo head calculated from its predicted position and the digital-converted servo signals is largely different from the predicted position used as the calculating basis, noise in the servo signals is considered as the cause and the predicted position is assumed to be the actual position leaving as it is, without using the calculated values as the actual position. Further, this invention is characterized in that the period of the servo signal read out from the servo head is measured in a state in which the servo head is moved at a predetermined speed by feeding a predetermined driving current to a motor after the power supply for driving a disc is switched on, and that the moving speed of the servo head is calculated from the measured period and the known distance corresponding to the period of the servo signal.

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