公开(公告)号：US06774615B2

公开(公告)日：2004-08-10

申请号：US10056865

申请日：2002-01-25

申请人： Susumu Yoshida ,  Shuichi Hashimoto ,  Ryuki Kubohara ,  Tatsuhiko Kosugi ,  Takeyori Hara ,  Yoshiyuki Kagami

发明人： Susumu Yoshida ,  Shuichi Hashimoto ,  Ryuki Kubohara ,  Tatsuhiko Kosugi ,  Takeyori Hara ,  Yoshiyuki Kagami

IPC分类号： G06M110

CPC分类号： G11B21/10

摘要： A resonance-frequency measuring method is used for measuring a resonance frequency of an information recording/reproducing device reproducing information recorded on a medium by driving a mechanism unit. The resonance-frequency measuring method comprises the measuring step of applying sine-wave oscillations at different frequencies one by one to the mechanism unit, and counting the number of times information reproduced upon application of each of the sine-wave oscillations differs from information indicating an aimed location, and the resonance-frequency determining step of determining the resonance frequency according to the number of times counted in the measuring step.

摘要翻译： 谐振频率测量方法用于通过驱动机构单元来测量记录在介质上的信息记录/再现装置再现信息的共振频率。 谐振频率测量方法包括测量步骤，将不同频率的正弦波振荡逐个地施加到机构单元，并且计数在应用每个正弦波振荡时再现的信息的数量不同于指示 以及谐振频率确定步骤，用于根据在测量步骤中计数的次数来确定谐振频率。

公开(公告)号：US07164261B2

公开(公告)日：2007-01-16

申请号：US10824896

申请日：2004-04-15

申请人： Shuichi Hashimoto ,  Ryuki Kubohara ,  Tatsuhiko Kosugi ,  Takeyori Hara ,  Yoshiyuki Kagami

发明人： Shuichi Hashimoto ,  Ryuki Kubohara ,  Tatsuhiko Kosugi ,  Takeyori Hara ,  Yoshiyuki Kagami

IPC分类号： G01R23/167 ,  G01R23/00

CPC分类号： G11B21/10

摘要： A resonance-frequency measuring method is used for measuring a resonance frequency of an information recording/reproducing device reproducing information recorded on a medium by driving a mechanism unit. The resonance-frequency measuring method includes the measuring step of applying sine-wave oscillations at different frequencies one by one to the mechanism unit, and counting the number of times information reproduced upon application of each of the sine-wave oscillations differs from information indicating an aimed location, and the resonance-frequency determining step of determining the resonance frequency according to the number of times counted in the measuring step.

摘要翻译： 谐振频率测量方法用于通过驱动机构单元来测量记录在介质上的信息记录/再现装置再现信息的共振频率。 谐振频率测量方法包括测量步骤，将不同频率的正弦波振荡逐个地施加到机构单元，并且对施加每个正弦波振荡时再现的信息的计数不同于指示 以及谐振频率确定步骤，用于根据在测量步骤中计数的次数来确定谐振频率。

公开(公告)号：US07050250B2

公开(公告)日：2006-05-23

申请号：US10787064

申请日：2004-02-25

申请人： Tatsuhiko Kosugi ,  Isamu Tomita ,  Kazunori Mori ,  Yoshiyuki Kagami ,  Ryuki Kubohara

发明人： Tatsuhiko Kosugi ,  Isamu Tomita ,  Kazunori Mori ,  Yoshiyuki Kagami ,  Ryuki Kubohara

IPC分类号： G11B5/09

CPC分类号： G11B27/3027 ,  G11B2220/20

摘要： There are provided a storage apparatus and a computer-readable recording medium, on whose storage areas, servo frames are arranged at uniform intervals in a spoke-like pattern. Each of the servo frames has an index bit storing section storing, as an index bit, part of an index pattern, which is operable to identify a storage area. The apparatus and the recording medium have a storage area recognizing unit for recognizing the storage areas based on the index bits, which are obtained by an index bit obtaining unit. The index bits, stored one in each of the index bit storing sections of the servo frames, are adapted to form, when being sequentially arranged, an index bit string in which such an index pattern repeatedly appears.

摘要翻译： 提供了一种存储装置和计算机可读记录介质，其存储区域以伺服帧以均匀的间隔以轮辐状图案布置。 每个伺服帧具有索引位存储部分，其存储可用于识别存储区域的索引图案的一部分作为索引位。 设备和记录介质具有存储区域识别单元，用于基于由索引位获取单元获得的索引位来识别存储区域。 存储在伺服帧的每个索引位存储部分中的索引位适于在顺序排列时形成重复出现这种索引图案的索引位串。

公开(公告)号：US20100134913A1

公开(公告)日：2010-06-03

申请号：US12568239

申请日：2009-09-28

申请人： Tatsuhiko Kosugi ,  Takeyori Hara ,  Toru Ikeda ,  Susumu Yoshida

发明人： Tatsuhiko Kosugi ,  Takeyori Hara ,  Toru Ikeda ,  Susumu Yoshida

IPC分类号： G11B5/09

CPC分类号： G11B5/59627

摘要： According to one embodiment, a frequency control apparatus includes an eccentric component storage module, a frequency correction amount calculating module, and an oscillator control module. The eccentric component storage module stores in advance an eccentric component calculated by a discrete Fourier transform of the number of clock signals measured for each servo frame. The frequency correction amount calculating module calculates the number of clock signals corresponding to the servo frame based on the eccentric component stored in the eccentric component storage module and calculates a frequency correction amount corresponding to the servo frame based on the number of clock signals. The oscillator control module controls the operation of a frequency oscillator such that a frequency for oscillating a clock signal in the frequency oscillator is adjusted according to the frequency correction amount calculated by the frequency correction amount calculating module.

摘要翻译： 根据一个实施例，频率控制装置包括偏心分量存储模块，频率校正量计算模块和振荡器控制模块。 偏心部件存储模块预先存储通过对每个伺服帧测量的时钟信号的数量的离散傅里叶变换计算出的偏心分量。 频率校正量计算模块基于存储在偏心分量存储模块中的偏心分量来计算与伺服帧对应的时钟信号的数量，并且基于时钟信号的数量计算与伺服帧对应的频率校正量。 振荡器控制模块控制频率振荡器的操作，使得根据由频率校正量计算模块计算出的频率校正量来调整振荡频率振荡器中的时钟信号的频率。

公开(公告)号：US20080159092A1

公开(公告)日：2008-07-03

申请号：US12004077

申请日：2007-12-19

申请人： Yoshiyuki Kagami ,  Tatsuhiko Kosugi

发明人： Yoshiyuki Kagami ,  Tatsuhiko Kosugi

IPC分类号： G11B7/00

CPC分类号： G11B5/5547

摘要： A first and second phase patterns of which phases are the same and a third and fourth phase patterns of which phases are opposite of the first and second phase patterns and of which phases are different from each other, are formed on a recording medium. A position information in a first track range is demodulated based on a first phase difference of the regeneration signals of the first and second phase pattern and of the third phase pattern, position information in a second track range is demodulated based on a second phase difference of the regeneration signals in the third phase pattern and the fourth phase pattern, and position information in a third track range is demodulated based on the first phase difference according to an angle difference between the first phase difference and a phase of the regeneration signal in the third phase pattern.

摘要翻译： 相位相同的第一和第二相位图案和相位与第一和第二相位图形相反并且相位彼此不同的第三和第四相位图案形成在记录介质上。 基于第一和第二相位图形和第三相位图案的再生信号的第一相位差来解调第一磁道范围中的位置信息，基于第二相位差的第二相位差来解调第二磁道范围中的位置信息 第三相位图形和第四相位图形中的再生信号和第三磁道范围中的位置信息根据第一相位差根据第三相位差中的第一相位差和第三相位图形中的再生信号的相位之间的角度差进行解调 相位模式。

公开(公告)号：US06535348B1

公开(公告)日：2003-03-18

申请号：US09413649

申请日：1999-10-06

申请人： Yoshiyuki Kagami ,  Tatsuhiko Kosugi

发明人： Yoshiyuki Kagami ,  Tatsuhiko Kosugi

IPC分类号： G11B5596

CPC分类号： G11B5/596

摘要： A servo control method and an information storage device are provided. In the method and device, positional information is detected in accordance with servo information including a plurality of positional regions having phase differences between tracks. The positional regions consist of a first positional region in which the phase difference between tracks is +90°, a second positional region in which the phase difference between tracks is −90°, a third positional region in which the phase difference between tracks is +90°, and a fourth positional region in which the phase difference between tracks is −135°. A deviation from a reference track is detected from the phase difference between the vector of a reproduction signal of the second positional region and the vector of a reproduction signal of the fourth positional region. Thus, a wide range of deviation can be detected.

摘要翻译： 提供伺服控制方法和信息存储装置。 在该方法和装置中，根据包括轨道之间具有相位差的多个位置区域的伺服信息来检测位置信息。 位置区域由轨道之间的相位差为+ 90°的第一位置区域，轨道之间的相位差为-90°的第二位置区域，轨道之间的相位差为+ 90°，轨道之间的相位差为-135°的第四位置区域。 根据第二位置区域的再现信号的向量与第四位置区域的再现信号的向量之间的相位差来检测与参考轨迹的偏差。 因此，可以检测到宽范围的偏差。

公开(公告)号：US07196865B2

公开(公告)日：2007-03-27

申请号：US10691336

申请日：2003-10-22

申请人： Kazunori Mori ,  Isamu Tomita ,  Tatsuhiko Kosugi ,  Yoshiyuki Kagami

发明人： Kazunori Mori ,  Isamu Tomita ,  Tatsuhiko Kosugi ,  Yoshiyuki Kagami

IPC分类号： G11B5/596

CPC分类号： G11B5/5547

摘要： A recording apparatus capable of securely reading out data for causing a head to follow along circular tracks set virtually. Therefore, on-track control along the virtual tracks is possible by the conversion data on the discoid record medium even when, for example, the printed circuit board in a recording apparatus has been replaced.

摘要翻译： 一种记录装置，其能够安全地读出用于使磁头沿着实际设置的圆形轨迹跟随的数据。 因此，即使例如记录装置中的印刷电路板已被更换，通过盘状记录介质上的转换数据也可以沿着虚拟轨道进行磁道轨迹控制。

公开(公告)号：US20060221479A1

公开(公告)日：2006-10-05

申请号：US11152357

申请日：2005-06-14

申请人： Tatsuhiko Kosugi ,  Yoshiyuki Kagami

发明人： Tatsuhiko Kosugi ,  Yoshiyuki Kagami

IPC分类号： G11B20/10

CPC分类号： G11B20/1426 ,  G11B20/1217 ,  G11B27/3027 ,  G11B2020/1265 ,  G11B2020/1284 ,  G11B2220/2516

摘要： A servo-frame recording apparatus includes: a sector information rearranging section for rearranging serial bits of the sector information that is binary data; a first ExOR section for performing the ExOR (exclusive OR) on the sector information, the serial bits of which have been rearranged by said sector information rearranging section, and the track information, so that an exclusive logical sum is obtained; and a writing section for wiring the exclusive logical sum obtained by said ExOR section into the servo frame. With this configuration, a data length required for recording gray information and sector information can be shortened without lowering the reliability of a magnetic disk.

公开(公告)号：US07508610B2

公开(公告)日：2009-03-24

申请号：US11152357

申请日：2005-06-14

申请人： Tatsuhiko Kosugi ,  Yoshiyuki Kagami

发明人： Tatsuhiko Kosugi ,  Yoshiyuki Kagami

IPC分类号： G11B5/09

CPC分类号： G11B20/1426 ,  G11B20/1217 ,  G11B27/3027 ,  G11B2020/1265 ,  G11B2020/1284 ,  G11B2220/2516

摘要： A servo-frame recording apparatus includes: a sector information rearranging section for rearranging serial bits of the sector information that is binary data; a first ExOR section for performing the ExOR (exclusive OR) on the sector information, the serial bits of which have been rearranged by said sector information rearranging section, and the track information, so that an exclusive logical sum is obtained; and a writing section for wiring the exclusive logical sum obtained by said ExOR section into the servo frame. With this configuration, a data length required for recording gray information and sector information can be shortened without lowering the reliability of a magnetic disk.

摘要翻译： 伺服帧记录装置包括：扇区信息重排部分，用于重排作为二进制数据的扇区信息的串行比特; 用于对扇区信息进行EXOR（异或）的第一异或部分，其序列位已由所述扇区信息重新排列部分重新排列，并且获得轨迹信息，从而获得排他逻辑和; 以及写入部分，用于将由所述ExOR部分获得的异或逻辑和布线到伺服帧中。 利用这种配置，可以缩短记录灰度信息和扇区信息所需的数据长度，而不降低磁盘的可靠性。

公开(公告)号：US20050088775A1

公开(公告)日：2005-04-28

申请号：US10691336

申请日：2003-10-22

申请人： Kazunori Mori ,  Isamu Tomita ,  Tatsuhiko Kosugi ,  Yoshiyuki Kagami

发明人： Kazunori Mori ,  Isamu Tomita ,  Tatsuhiko Kosugi ,  Yoshiyuki Kagami

IPC分类号： G11B5/55 ,  G11B5/596

CPC分类号： G11B5/5547

摘要： A recording apparatus capable of securely reading out data for causing a head to follow along circular tracks set virtually. Therefore, on-track control along the virtual tracks is possible by the conversion data on the discoid record medium even when, for example, the printed circuit board in a recording apparatus has been replaced.

摘要翻译： 一种记录装置，其能够安全地读出用于使磁头沿着实际设置的圆形轨迹跟随的数据。 因此，即使例如记录装置中的印刷电路板已被更换，通过盘状记录介质上的转换数据也可以沿着虚拟轨道进行磁道轨迹控制。