公开(公告)号：US20100027157A1

公开(公告)日：2010-02-04

申请号：US12491972

申请日：2009-06-25

申请人： Yoshiyuki Nagasaka

发明人： Yoshiyuki Nagasaka

IPC分类号： G11B21/02

CPC分类号： G11B5/6029 ,  G11B5/6005 ,  G11B5/6064

摘要： According to an aspect of the embodiment, an MPU obtains, as a first gain value from a RDC, a gain value of a servo signal when data is read from a magnetic storage medium, and obtains, as a second gain value from the RDC, the gain value of the servo signal when data is written to the magnetic storage medium. The MPU controls supplied power for controlling flying height of the magnetic head when data is written to the magnetic storage medium based on a result of the comparing between the first gain value and the second gain value.

摘要翻译： 根据本实施例的一个方面，当从磁存储介质读取数据时，MPU从RDC获得作为第一增益值的伺服信号的增益值，并且从RDC获得作为第二增益值的第二增益值， 当数据被写入磁存储介质时伺服信号的增益值。 基于第一增益值和第二增益值之间的比较结果，当数据写入磁存储介质时，MPU控制用于控制磁头的飞行高度的供电功率。

公开(公告)号：US5623474A

公开(公告)日：1997-04-22

申请号：US513222

申请日：1995-08-10

申请人： Umeo Oshio ,  Yoshiyuki Nagasaka

发明人： Umeo Oshio ,  Yoshiyuki Nagasaka

IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B20/18 ,  G11B7/00 ,  G11B5/02

CPC分类号： G11B20/10009 ,  G11B20/18

摘要： A training pattern which is used for a waveform equalization is preliminarily recorded on a disk medium and the waveform equalization to suppress an interference between bits of a read waveform by an adaptive type equalizer is performed. An error detector executes a training operation for adjusting an equalization amount of the adaptive type equalizer so as to minimize an error due to the interference between bits of the read waveform on the basis of the training pattern read out from the disk medium. A bit pattern detector detects a predetermined bit pattern "00" included in the training pattern and instructs the start of the training operation to the error detector by the detection of the first bit pattern "00". A counter counts the number of detection times of the bit pattern "00" by the bit pattern detector and instructs the end of the training operation to the error detector when the number of detection times reaches a predetermined value.

摘要翻译： 用于波形均衡的训练模式被预先记录在盘介质上，并且执行波形均衡以通过自适应型均衡器抑制读取波形的比特之间的干扰。 误差检测器执行用于调整自适应型均衡器的均衡量的训练操作，以便根据从盘介质读出的训练模式，使读取波形的比特之间的干扰最小化。 位模式检测器检测包括在训练模式中的预定位模式“00”，并通过检测第一位模式“00”来指示对误差检测器的训练操作开始。 计数器通过位模式检测器对位模式“00”的检测次数进行计数，并且当检测次数达到预定值时，指示对误差检测器结束训练操作。

公开(公告)号：US20080239551A1

公开(公告)日：2008-10-02

申请号：US12034925

申请日：2008-02-21

申请人： Toshiyuki Yokota ,  Yoshiyuki Nagasaka

发明人： Toshiyuki Yokota ,  Yoshiyuki Nagasaka

IPC分类号： G11B21/02

CPC分类号： G11B5/6064 ,  G11B5/607

摘要： A storage device has a head that floats over a rotating storage medium. The storage device includes a measuring unit that measures the operating time and a head slider having a head element. The head element includes a reading element, a writing element and a heater, and a control unit that controls a protruding amount of the head element, by issuing an instruction causing an amount of power of a first predetermined value to be supplied to the heater until the amount of time measured by the measuring unit becomes a predetermined value. When the amount of time exceeds the predetermined value, the control unit cause an amount of power of a second predetermined value that is lower than the first predetermined value.

摘要翻译： 存储装置具有浮在旋转存储介质上的头部。 存储装置包括测量操作时间的测量单元和具有头元件的磁头滑块。 头元件包括读取元件，写入元件和加热器，以及控制单元，通过发出将第一预定值的功率量提供给加热器的指令来控制头元件的突出量，直到 由测量单元测量的时间量变成预定值。 当时间量超过预定值时，控制单元产生低于第一预定值的第二预定值的功率量。

公开(公告)号：US5831782A

公开(公告)日：1998-11-03

申请号：US697067

申请日：1996-08-19

申请人： Keiichi Kohno ,  Tsuyoshi Takahashi ,  Masayoshi Ishii ,  Yoshiyuki Nagasaka ,  Tamotsu Kozuka ,  Susumu Yoshida

发明人： Keiichi Kohno ,  Tsuyoshi Takahashi ,  Masayoshi Ishii ,  Yoshiyuki Nagasaka ,  Tamotsu Kozuka ,  Susumu Yoshida

IPC分类号： G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/03 ,  G11B5/035 ,  G11B5/39 ,  G11B5/40 ,  G11B5/48 ,  G11B5/55 ,  G11B5/56 ,  G11B5/596 ,  G11B19/02 ,  G11B19/04 ,  G11B19/20 ,  G11B19/28 ,  G11B21/08 ,  G11B21/18

CPC分类号： G11B19/20 ,  G11B19/28 ,  G11B21/085 ,  G11B21/18 ,  G11B5/012 ,  G11B5/03 ,  G11B5/4886 ,  G11B5/5521 ,  G11B5/5547 ,  G11B5/59683 ,  G11B19/02 ,  G11B19/04 ,  G11B2005/0018 ,  G11B5/035 ,  G11B5/39 ,  G11B5/40 ,  G11B5/56

摘要： Disclosed are a method of and an apparatus for controlling a magnetic disc drive including a magnetic head in which a write head and a read head are separated. The control method comprises: a step of calculating a moving quantity up to a designated target track position in accordance with a write instruction or a read instruction and calculating a moving quantity from the moving quantity up to the target track position and a yaw angle offset quantity in accordance with the read instruction or the write instruction; and a step of locating the magnetic head in the target track position by seek-controlling the rotary type actuator in accordance with the calculated moving quantity. The control apparatus comprises: a first control circuit for indicating a seek to a designated target track in accordance with a write instruction or a read instruction; and a second control circuit for calculating a moving quantity up to a designated target track position in accordance with the write instruction or the read instruction, calculating a moving quantity from the moving quantity up to the target track position and a yaw angle offset quantity in accordance with the read instruction or the write instruction and thus seek-controlling the rotary type actuator in accordance with the calculated moving quantity.

摘要翻译： 公开了一种用于控制磁盘驱动器的方法和装置，所述磁盘驱动器包括写入头和读取头分离的磁头。 控制方法包括：根据写入指令或读取指令计算直到指定目标轨迹位置的移动量的步骤，并计算从移动量到目标轨道位置的移动量，以及偏航角偏移量 根据读取指令或写入指令; 以及通过根据计算出的移动量搜索旋转式致动器来将磁头定位在目标轨道位置的步骤。 控制装置包括：第一控制电路，用于根据写入指令或读取指令指示对指定目标轨道的寻道; 以及第二控制电路，用于根据写入指令或读取指令计算直到指定目标轨道位置的移动量，根据移动量计算到目标轨迹位置的移动量和根据该偏移角偏移量的移动量 读取指令或写入指令，从而根据计算出的移动量来寻求控制旋转型致动器。

公开(公告)号：US07839597B2

公开(公告)日：2010-11-23

申请号：US12410986

申请日：2009-03-25

申请人： Yoshiyuki Nagasaka

发明人： Yoshiyuki Nagasaka

IPC分类号： G11B21/02 ,  G11B5/02 ,  G11B15/18

CPC分类号： G11B5/6005 ,  G11B5/6064

摘要： A difference value between a gain control value when a head comes into contact with a recording medium and a gain control value when the head floats with respect to the recording medium by a target floating amount is stored in advance. When the information access device is actually operated, supply power to a heater is adjusted to once bring the head into contact with the recording medium, a first gain control value adjusted by a gain control section when the head comes into contact with the recording medium is obtained, a second gain control value to be adjusted by the gain control section when the head floats from the recording medium by the target floating amount is obtained from the first gain control value and the difference value, and the supply power to the heater is adjusted such that the second gain control value is supplied to a gain variable amplifier by the gain control section.

摘要翻译： 预先存储头部与记录介质接触时的增益控制值与当头部相对于记录介质浮动目标浮动量时的增益控制值之间的差值。 当信息访问装置实际上被操作时，调节向加热器供电的一次，使头部与记录介质接触，当头部与记录介质接触时由增益控制部分调节的第一增益控制值是 从第一增益控制值和差值获得当从记录介质浮动目标浮动量时由增益控制部分调整的第二增益控制值，并且调节对加热器的供给功率 使得第二增益控制值由增益控制部分提供给增益可变放大器。

公开(公告)号：US20090244766A1

公开(公告)日：2009-10-01

申请号：US12410986

申请日：2009-03-25

申请人： Yoshiyuki NAGASAKA

发明人： Yoshiyuki NAGASAKA

IPC分类号： G11B21/02

CPC分类号： G11B5/6005 ,  G11B5/6064

摘要： A difference value between a gain control value when a head comes into contact with a recording medium and a gain control value when the head floats with respect to the recording medium by a target floating amount is stored in advance. When the information access device is actually operated, supply power to a heater is adjusted to once bring the head into contact with the recording medium, a first gain control value adjusted by a gain control section when the head comes into contact with the recording medium is obtained, a second gain control value to be adjusted by the gain control section when the head floats from the recording medium by the target floating amount is obtained from the first gain control value and the difference value, and the supply power to the heater is adjusted such that the second gain control value is supplied to a gain variable amplifier by the gain control section.

摘要翻译： 预先存储头部与记录介质接触时的增益控制值与当头部相对于记录介质浮动目标浮动量时的增益控制值之间的差值。 当信息访问装置实际上被操作时，调节向加热器供电的一次，使头部与记录介质接触，当头部与记录介质接触时由增益控制部分调节的第一增益控制值是 从第一增益控制值和差值获得当从记录介质浮动目标浮动量时由增益控制部分调整的第二增益控制值，并且调整对加热器的供给功率 使得第二增益控制值由增益控制部分提供给增益可变放大器。

公开(公告)号：US20060007590A1

公开(公告)日：2006-01-12

申请号：US10988223

申请日：2004-11-12

申请人： Yoshiyuki Nagasaka

发明人： Yoshiyuki Nagasaka

IPC分类号： G11B5/596

CPC分类号： G11B5/59688 ,  G11B20/1217 ,  G11B27/3027 ,  G11B2020/1222 ,  G11B2020/1292 ,  G11B2220/2516

摘要： A magnetic disk apparatus formats a single data frame as a single sector. The magnetic disk apparatus includes a read-out control unit that controls to read-out sector data by emulating an existing format (e.g., “512 bytes/sector”), and a write-in control unit that controls to write sector data by emulating the existing format (e.g., “512 bytes/sector”), when the magnetic disk apparatus receives a read command or a write command based on a format (e.g., “512 bytes/sector”) that is different from a format of the magnetic disk apparatus (i.e., one sector/one data frame) from a host.

摘要翻译： 磁盘装置将单个数据帧格式化为单个扇区。 磁盘装置包括读出控制单元，其通过模拟现有格式（例如，“512字节/扇区”）来控制读出扇区数据，以及写入控制单元，其通过模拟来控制写入扇区数据 现有格式（例如，“512字节/扇区”），当磁盘设备基于与磁盘格式不同的格式（例如，“512字节/扇区”）接收到读命令或写命令时 磁盘装置（即，一个扇区/一个数据帧）。

公开(公告)号：US07697232B2

公开(公告)日：2010-04-13

申请号：US12034925

申请日：2008-02-21

申请人： Toshiyuki Yokota ,  Yoshiyuki Nagasaka

发明人： Toshiyuki Yokota ,  Yoshiyuki Nagasaka

IPC分类号： G11B5/60

CPC分类号： G11B5/6064 ,  G11B5/607

摘要： A storage device has a head that floats over a rotating storage medium. The storage device includes a measuring unit that measures the operating time and a head slider having a head element. The head element includes a reading element, a writing element and a heater, and a control unit that controls a protruding amount of the head element, by issuing an instruction causing an amount of power of a first predetermined value to be supplied to the heater until the amount of time measured by the measuring unit becomes a predetermined value. When the amount of time exceeds the predetermined value, the control unit cause an amount of power of a second predetermined value that is lower than the first predetermined value.

摘要翻译： 存储装置具有浮在旋转存储介质上的头部。 存储装置包括测量操作时间的测量单元和具有头元件的磁头滑块。 头元件包括读取元件，写入元件和加热器，以及控制单元，通过发出将第一预定值的功率量提供给加热器的指令来控制头元件的突出量，直到 由测量单元测量的时间量变成预定值。 当时间量超过预定值时，控制单元产生低于第一预定值的第二预定值的功率量。

公开(公告)号：US07212363B2

公开(公告)日：2007-05-01

申请号：US10988223

申请日：2004-11-12

申请人： Yoshiyuki Nagasaka

发明人： Yoshiyuki Nagasaka

IPC分类号： G11B5/09

CPC分类号： G11B5/59688 ,  G11B20/1217 ,  G11B27/3027 ,  G11B2020/1222 ,  G11B2020/1292 ,  G11B2220/2516

摘要： A magnetic disk apparatus formats a single data frame as a single sector. The magnetic disk apparatus includes a read-out control unit that controls to read-out sector data by emulating an existing format (e.g., “512 bytes/sector”), and a write-in control unit that controls to write sector data by emulating the existing format (e.g., “512 bytes/sector”), when the magnetic disk apparatus receives a read command or a write command based on a format (e.g., “512 bytes/sector”) that is different from a format of the magnetic disk apparatus (i.e., one sector/one data frame) from a host.

摘要翻译： 磁盘装置将单个数据帧格式化为单个扇区。 磁盘装置包括读出控制单元，其通过模拟现有格式（例如，“512字节/扇区”）来控制读出扇区数据，以及写入控制单元，其通过模拟来控制写入扇区数据 现有格式（例如，“512字节/扇区”），当磁盘设备基于与磁盘格式不同的格式（例如，“512字节/扇区”）接收到读命令或写命令时 磁盘装置（即，一个扇区/一个数据帧）。

公开(公告)号：US5956200A

公开(公告)日：1999-09-21

申请号：US609460

申请日：1996-03-01

申请人： Keiichi Kohno ,  Tsuyoshi Takahashi ,  Masayoshi Ishii ,  Yoshiyuki Nagasaka ,  Tamotsu Kozuka ,  Susumu Yoshida

发明人： Keiichi Kohno ,  Tsuyoshi Takahashi ,  Masayoshi Ishii ,  Yoshiyuki Nagasaka ,  Tamotsu Kozuka ,  Susumu Yoshida

IPC分类号： G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/03 ,  G11B5/035 ,  G11B5/39 ,  G11B5/40 ,  G11B5/48 ,  G11B5/55 ,  G11B5/56 ,  G11B5/596 ,  G11B19/02 ,  G11B19/04 ,  G11B19/20 ,  G11B19/28 ,  G11B21/08 ,  G11B21/18

CPC分类号： G11B19/20 ,  G11B19/28 ,  G11B21/085 ,  G11B21/18 ,  G11B5/012 ,  G11B5/03 ,  G11B5/4886 ,  G11B5/5521 ,  G11B5/5547 ,  G11B5/59683 ,  G11B19/02 ,  G11B19/04 ,  G11B2005/0018 ,  G11B5/035 ,  G11B5/39 ,  G11B5/40 ,  G11B5/56

摘要： Disclosed are a method of and an apparatus for controlling a magnetic disc drive including a magnetic head in which a write head and a read head are separated. The control method comprises: a step of calculating a moving quantity up to a designated target track position in accordance with a write instruction or a read instruction and calculating a moving quantity from the moving quantity up to the target track position and a yaw angle offset quantity in accordance with the read instruction or the write instruction; and a step of locating the magnetic head in the target track position by seek-controlling the rotary type actuator in accordance with the calculated moving quantity. The control apparatus comprises: a first control circuit for indicating a seek to a designated target track in accordance with a write instruction or a read instruction; and a second control circuit for calculating a moving quantity up to a designated target track position in accordance with the write instruction or the read instruction, calculating a moving quantity from the moving quantity up to the target track position and a yaw angle offset quantity in accordance with the read instruction or the write instruction and thus seek-controlling the rotary type actuator in accordance with the calculated moving quantity.

摘要翻译： 公开了一种用于控制磁盘驱动器的方法和装置，所述磁盘驱动器包括写入头和读取头分离的磁头。 控制方法包括：根据写入指令或读取指令计算直到指定目标轨迹位置的移动量的步骤，并计算从移动量到目标轨道位置的移动量，以及偏航角偏移量 根据读取指令或写入指令; 以及通过根据计算出的移动量搜索旋转式致动器来将磁头定位在目标轨道位置的步骤。 控制装置包括：第一控制电路，用于根据写入指令或读取指令指示对指定目标轨道的寻道; 以及第二控制电路，用于根据写入指令或读取指令计算直到指定目标轨道位置的移动量，根据移动量计算到目标轨迹位置的移动量和根据该偏移角偏移量的移动量 读取指令或写入指令，从而根据计算出的移动量来寻求控制旋转型致动器。