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1. 发明授权

US06628581B1 Servo control method and servo controller of a storage device, and its storage device 失效
标题翻译：存储装置的伺服控制方法和伺服控制器及其存储装置
公开(公告)号：US06628581B1
公开(公告)日：2003-09-30
申请号：US09550894
申请日：2000-04-17
申请人： Wataru Tsukahara , Shigenori Yanagi
发明人： Wataru Tsukahara , Shigenori Yanagi
IPC分类号： G11B700
CPC分类号： G11B7/0901 , G11B7/0908 , G11B7/0941 , G11B11/10576
摘要： This invention relates to a servo-control method and servo-controller of a memory storage device, as well as the memory storage device, for positioning the reading position of a head on a target position. It suppresses phase lag in the high region while preventing a decrease in follow-ability. This invention comprises a storage medium 72, head 76, actuator 60, detection circuit 48, and control circuit 16. The detection circuit 48 detects the amount of shift between the reading position of the head 76 and a target position. The control circuit 16 performs PID calculation for the shift amount and outputs an instruction value for the actuator 60. There is a limiter 121 for limiting the calculated result of the differential component of this PID calculation to a specified value. Only the high region is limited and the low region is not limited, thus it is possible to suppress phase lag in the high while maintaining follow-ability.
摘要翻译：本发明涉及存储器存储装置的伺服控制方法和伺服控制器，以及用于将头部的读取位置定位在目标位置上的存储器存储装置。在高区域抑制相位滞后，同时防止后续能力下降。本发明包括存储介质72，头76，致动器60，检测电路48和控制电路16.检测电路48检测头部76的读取位置与目标位置之间的偏移量。控制电路16对移动量执行PID计算，并输出致动器60的指令值。存在限制器121，用于将该PID计算的差分分量的计算结果限制为指定值。只有高区域是有限的，低区域不受限制，因此可以在保持跟踪性的同时抑制高的相位滞后。

2. 发明授权

US06249496B1 Optical storage apparatus 失效
标题翻译：光存储装置
公开(公告)号：US06249496B1
公开(公告)日：2001-06-19
申请号：US09196098
申请日：1998-11-19
申请人： Wataru Tsukahara , Shigenori Yanagi , Toru Ikeda
发明人： Wataru Tsukahara , Shigenori Yanagi , Toru Ikeda
IPC分类号： G11B709
CPC分类号： G11B7/0901 , G11B7/08517 , G11B7/094 , G11B7/0941 , G11B11/10576 , G11B11/10597
摘要： A correction processing unit for correcting a level fluctuation appearing on a tracking error signal when a laser beam passes an ID area on a medium track during an on-track control is provided. That is, in the correction processing unit, a correction value determined by a correction value determining unit at a correction timing detected by a correction timing discriminating unit is subtracted by a correcting unit from a signal value obtained by sampling and converting the tracking error signal into digital data by an A/D converter at a predetermined period and reading, thereby performing the correction.
摘要翻译：提供了一种校正处理单元，用于当在轨道控制期间激光束通过介质轨道上的ID区域时，校正出现在跟踪误差信号上的电平波动。也就是说，在校正处理单元中，通过校正单元从由校正定时识别单元检测的校正定时由校正值确定单元确定的校正值从通过采样获得的信号值中减去，并将跟踪误差信号转换为通过A / D转换器以预定周期进行数字数据读取，从而进行校正。

3. 发明授权

US06845065B2 Magneto-optical recording medium processing apparatus 失效
标题翻译：磁光记录媒体处理装置
公开(公告)号：US06845065B2
公开(公告)日：2005-01-18
申请号：US09956066
申请日：2001-09-19
申请人： Wataru Tsukahara , Shigenori Yanagi
发明人： Wataru Tsukahara , Shigenori Yanagi
IPC分类号： G11B11/105 , G11B5/02 , G11B5/56 , G11B7/00 , G11B7/12 , G11B11/00 , G11B21/02
CPC分类号： G11B11/10595 , G11B11/10502 , G11B11/10563
摘要： A magneto-optical recording medium processing apparatus of the present invention limits, via a predetermined current limiting means, the bias current applied to a bias coil during seek, when a seek current is applied to a carriage. In accordance therewith, it is possible to reduce the peak of the sum current, which is the total of the seek current and the bias current, and the current consumption of the entire apparatus can also be curbed. Current limiting means, for example, sets a bias current that is smaller than the specified value of the bias current required at media access time, and sets a bias current value such that the total of the seek current and bias current does not exceed an allowable current.
摘要翻译：本发明的磁光记录介质处理装置通过预定电流限制装置限制在寻道期间施加到偏置线圈的偏置电流，当向载架施加寻道电流时。因此，可以减小作为寻找电流和偏置电流的总和的和电流的峰值，并且还可以抑制整个装置的电流消耗。例如，限流装置设定小于介质存取时间所需的偏置电流的规定值的偏置电流，并设定偏置电流值，使得寻道电流和偏置电流的总和不超过允许值当前。

4. 发明授权

US06452879B1 Optical storage apparatus 失效
公开(公告)号：US06452879B1
公开(公告)日：2002-09-17
申请号：US09772155
申请日：2001-01-29
申请人： Wataru Tsukahara , Shigenori Yanagi , Toru Ikeda , Masatsugu Nishida
发明人： Wataru Tsukahara , Shigenori Yanagi , Toru Ikeda , Masatsugu Nishida
IPC分类号： G11B700
CPC分类号： G11B7/094
摘要： An offset measuring unit receives a servo error signal E1 in which a change in an offset caused by a change in an amount of reflection light directly appears and which does not pass through a filter, and measures an offset amount in the servo error signal which is caused by a change in the amount of reflection light. A correction amount calculating unit calculates a correction amount to cancel out the offset amount and outputs the correction amount to an offset correcting circuit for an offset generating period so as to perform correction.

5. 发明授权

US06504802B1 Tracking control method and storage unit 失效
标题翻译：跟踪控制方法和存储单元
公开(公告)号：US06504802B1
公开(公告)日：2003-01-07
申请号：US09349029
申请日：1999-07-07
申请人： Wataru Tsukahara , Shigenori Yanagi
发明人： Wataru Tsukahara , Shigenori Yanagi
IPC分类号： G11B700
CPC分类号： G11B7/0901
摘要： A tracking control method carries out a tracking control based on a tracking error signal which indicates an error of a beam spot formed on a recording medium by a light beam from a light source with respect to a track. The tracking control method includes detecting a change in a light emission power of the light source, calculating a correction quantity which is used to correct a shift and/or fluctuation of the tracking error signal generated due to the change in the light emission power, and carrying out a correction by adding the correction quantity to the tracking error signal when the change in the light emission power is detected.
摘要翻译：跟踪控制方法基于跟踪误差信号执行跟踪控制，所述跟踪误差信号指示由相对于轨道的光源的光束在记录介质上形成的束斑的误差。跟踪控制方法包括检测光源的发光功率的变化，计算用于校正由于发光功率的变化而产生的跟踪误差信号的偏移和/或波动的校正量，以及当检测到发光功率的变化时，通过将跟踪误差信号加上校正量来进行校正。

6. 发明授权

US07697234B2 Storage apparatus, control method, and control device which enable or disable compensation control 有权
标题翻译：使能或禁止补偿控制的存储装置，控制方法和控制装置
公开(公告)号：US07697234B2
公开(公告)日：2010-04-13
申请号：US12034147
申请日：2008-02-20
申请人： Yoshinari Higashino , Shigenori Yanagi
发明人： Yoshinari Higashino , Shigenori Yanagi
IPC分类号： G11B5/596
CPC分类号： G11B5/5582 , G11B5/596 , G11B19/042
摘要： A rotation disturbance compensation control unit applies a compensation signal to a positioning control unit so as to cancel out rotation disturbance vibration components detected by using acceleration velocity sensors. At predetermined timing, a position error detection unit detects respective position errors of the case in which the rotation disturbance compensation control unit is turned on and the case in which it is turned off. A compensation control switching unit switches the rotation disturbance compensation control unit to be on if the position error of the case in which the compensation control of rotation disturbance is turned on is small and switches the compensation control switching unit to be off if the position error of the case in which the compensation control of rotation disturbance is turned off is small.
摘要翻译：旋转扰动补偿控制单元将补偿信号施加到定位控制单元，以抵消通过使用加速度速度传感器检测的旋转干扰振动分量。在预定定时，位置误差检测单元检测旋转扰动补偿控制单元接通的情况和其关闭的情况下的各个位置误差。如果旋转扰动的补偿控制导通的情况的位置误差小，则补偿控制切换单元将旋转扰动补偿控制单元切换为接通，如果位置误差为旋转扰动的补偿控制关闭的情况小。

7. 发明授权

US07593179B2 Control apparatus, storage apparatus, and writing control method 失效
标题翻译：控制装置，存储装置和写入控制方法
公开(公告)号：US07593179B2
公开(公告)日：2009-09-22
申请号：US12105868
申请日：2008-04-18
申请人： Atsushi Suzuki , Yukio Abe , Shigenori Yanagi
发明人： Atsushi Suzuki , Yukio Abe , Shigenori Yanagi
IPC分类号： G11B21/02
CPC分类号： G11B19/042
摘要： A control apparatus detects positional information of a head performing writing processing every predetermined time interval, and computes next-sample projected positional information of the head based on the difference between the positional information detected the previous time and the positional information detected the current time, and the current detected positional information for every position information detected. The control apparatus determines whether the computed next-sample projected positional information is greater than a next-sample projected position threshold which is a predetermined threshold. Following this, in the case that determination is made that the next-sample projected positional information is greater than the projected position threshold, the disk control apparatus controls a storage device to stop the writing processing after the writing processing is performed through the end of the sector wherein the writing processing is currently being performed.
摘要翻译：控制装置每隔预定时间间隔检测执行写入处理的头部的位置信息，并且基于前一时间检测到的位置信息与检测到的当前时间的位置信息之间的差异来计算头部的下一样本投影位置信息，以及当前检测到的每个位置信息的位置信息。控制装置确定所计算的下一样本投影位置信息是否大于作为预定阈值的下一样本投影位置阈值。接下来，在确定下一个样本投影位置信息大于投影位置阈值的情况下，盘控制装置控制存储装置在执行写入处理之后停止写入处理其中当前正在执行写入处理。

8. 发明申请

US20090059415A1 STORAGE DEVICE AND SERVO INFORMATION WRITING METHOD 失效
标题翻译：存储设备和服务器信息写入方法
公开(公告)号：US20090059415A1
公开(公告)日：2009-03-05
申请号：US12121101
申请日：2008-05-15
申请人： Takeshi Hara , Yoshifumi Obara , Yukio Abe , Shigenori Yanagi , Mitsuo Kamimura
发明人： Takeshi Hara , Yoshifumi Obara , Yukio Abe , Shigenori Yanagi , Mitsuo Kamimura
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/59688
摘要： A storage device receives and holds a storage medium that is subjected to first servo writing processing for writing servo information, a Gray code of which is offset, from an inner cylinder or an outer cylinder to a predetermined cylinder and, after the first servo writing processing, subjected to second servo writing processing for writing servo information from an opposite direction to the predetermined cylinder and in which Gray codes are written to be offset not to overlap in the first or second servo writing processing and the pieces of servo information having different mark patterns are written in the first servo writing processing and the second servo writing processing. The storage device acquires cylinder information and mark patterns from the servo information written in the held storage medium and controls a position of a head based on the acquired cylinder information and mark patterns.
摘要翻译：存储装置接收并保持经历了第一伺服写入处理的存储介质，用于将格雷码从内圆筒或外圆筒写入预定圆柱体，并且在第一伺服写入处理之后经过第二伺服写入处理，用于将伺服信息从与预定气缸相反的方向写入，并且其中格雷码被写入以在第一或第二伺服写入处理中不重叠，并且具有不同标记图案的伺服信息写入第一伺服写入处理和第二伺服写入处理。存储装置从记录在保持的存储介质中的伺服信息中取得圆筒信息和标记图案，并根据获取的圆筒信息和标记图案来控制头部的位置。

9. 发明授权

US07468854B2 Storage apparatus, control method, control device, and program which can control flying height of head accurate 失效
标题翻译：存储装置，控制方法，控制装置和程序，可以控制头部的飞行高度准确
公开(公告)号：US07468854B2
公开(公告)日：2008-12-23
申请号：US11645189
申请日：2006-12-22
申请人： Satoshi Yamashita , Syunji Saitou , Yukio Abe , Shigenori Yanagi
发明人： Satoshi Yamashita , Syunji Saitou , Yukio Abe , Shigenori Yanagi
IPC分类号： G11B21/02 , G11B5/00
CPC分类号： G11B5/607
摘要： An amplitude measurement unit measures an amplitude of a read signal from a preamble unit in a servo area of a predetermined frame number m per one rotation of the recording medium for a predetermined cycle number n while increasing an electric power amount distributed to the heater in the state in which the head is positioned to a track on the recording medium, and a mean amplitude calculating unit calculates a mean amplitude from an amplitude measurement value which is measured by the number which is the frame number m multiplied by the cycle number n. A contact determination unit calculates a mean amplitude variation amount per a unit heater electric power amount as a contact determination value, and determines that the head is in contact with the recording medium when the contact determination value is lower than a predetermined threshold value, and a flying height calculating unit which calculates a flying height of the head with respect to the surface of the recording medium from the heater electric power amount at the point when contact is determined.
摘要翻译：幅度测量单元在预定周期数n的每一记录介质旋转的预定帧数m的伺服区域中的前导码单元中测量读取信号的幅度，同时增加分配给加热器的电力量头部位于记录介质上的轨迹的状态，平均幅度计算单元根据作为帧数m乘以周期数n的数量测量的振幅测量值来计算平均振幅。接触确定单元计算每单位加热器电力量的平均幅度变化量作为接触确定值，并且当接触确定值低于预定阈值时，确定头与记录介质接触，并且飞行高度计算单元，其根据确定接触点处的加热器电力量，计算头部相对于记录介质表面的飞行高度。

10. 发明申请

US20080291576A1 CONTROLLER, STORAGE APPARATUS AND CONTROL METHOD 失效
标题翻译：控制器，存储设备和控制方法
公开(公告)号：US20080291576A1
公开(公告)日：2008-11-27
申请号：US12123938
申请日：2008-05-20
申请人： Takahiro Aoki , Shigenori Yanagi
发明人： Takahiro Aoki , Shigenori Yanagi
IPC分类号： G11B21/16
CPC分类号： G11B19/043 , G11B19/042 , G11B21/12
摘要： A controller controls movement of a head mounted in a storage apparatus based on a signal output from an acceleration sensor. A head movement control section which controls movement of the head to a target position on a storage medium and a head unload control section unloads the head to an unload position based on (1) the time at which a drop or initial impact is first detected based on a signal output from the acceleration sensor and (2) threshold information, which includes a first threshold representing a standard strength of the signal output from the acceleration sensor at the time of drop and a second threshold representing a standard strength of the signal output from the acceleration sensor at the time of initially receiving impact.
摘要翻译：控制器基于从加速度传感器输出的信号来控制安装在存储装置中的头的移动。基于（1）基于（1）首先检测到下降或初始冲击的时间，头部移动控制部分，其控制头部到存储介质上的目标位置的移动和头部卸载控制部分将头部卸载到卸载位置在加速度传感器输出的信号上，以及（2）阈值信息，其包括表示在下降时从加速度传感器输出的信号的标准强度的第一阈值，以及表示从加速度传感器在初始接收冲击时。

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