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1. 发明授权

US5949602A Method and apparatus for measuring head deviation and method and apparatus for recording/reproducing data 失效
公开(公告)号：US5949602A
公开(公告)日：1999-09-07
申请号：US784324
申请日：1997-01-16
申请人： Hideaki Ishioka , Yoshikazu Onuki , Satoru Seko , Toru Takeda
发明人： Hideaki Ishioka , Yoshikazu Onuki , Satoru Seko , Toru Takeda
IPC分类号： G11B5/39 , G11B5/455 , G11B5/48 , G11B5/55 , G11B5/596 , G11B11/105 , G11B21/08 , G11B21/10 , G11B33/10
CPC分类号： G11B5/59627 , G11B21/083 , G11B21/106 , G11B5/5534 , G11B11/10573 , G11B11/10576 , G11B33/10 , G11B5/4886
摘要： A data for measuring deviation between a recording head and a playback head easily for correctly reproducing data despite such deviation. A playback signal amplitude detection circuit 23 detects the amplitude of playback signals of test data from a playback amplifier 15, while adders 51, 52 cumulatively sum the amplitude values of playback signals in a pre-set group of sectors and those in another pre-set sector of groups on a magnetic disc 21 supplied from the playback signal amplitude detection circuit 23. A subtractor 50 computes a difference between a first sum value from the adder 51 and a second sum value from the adder 52 and routes the difference to a controller 11. The controller detects deviation between the recording head and the playback head from the difference value. When recording or reproducing actual data, the controller 11 causes the position of the recording head or the playback head to be corrected on the basis of the detected deviation.

2. 发明授权

US6025969A Method and apparatus for measuring head deviation and method and apparatus for recording/reproducing data 失效
标题翻译：用于测量头偏差的方法和装置，用于记录/再现数据的方法和装置
公开(公告)号：US6025969A
公开(公告)日：2000-02-15
申请号：US165860
申请日：1998-10-02
申请人： Hideaki Ishioka , Yoshikazu Onuki , Satoru Seko , Toru Takeda
发明人： Hideaki Ishioka , Yoshikazu Onuki , Satoru Seko , Toru Takeda
IPC分类号： G11B5/39 , G11B5/455 , G11B5/48 , G11B5/55 , G11B5/596 , G11B11/105 , G11B21/08 , G11B21/10 , G11B33/10 , G11B5/58
CPC分类号： G11B5/59627 , G11B21/083 , G11B21/106 , G11B5/5534 , G11B11/10573 , G11B11/10576 , G11B33/10 , G11B5/4886
摘要： A data for measuring deviation between a recording head and a playback head easily for correctly reproducing data despite such deviation. A playback signal amplitude detection circuit 23 detects the amplitude of playback signals of test data from a playback amplifier 15, while adders 51, 52 cumulatively sum the amplitude values of playback signals in a pre-set group of sectors and those in another pre-set sector of groups on a magnetic disc 21 supplied from the playback signal amplitude detection circuit 23. A subtractor 50 computes a difference between a first sum value from the adder 51 and a second sum value from the adder 52 and routes the difference to a controller 11. The controller detects deviation between the recording head and the playback head from the difference value. When recording or reproducing actual data, the controller 11 causes the position of the recording head or the playback head to be corrected on the basis of the detected deviation.
摘要翻译：用于测量记录头和回放头之间的偏差的数据，即使有这种偏差，也可以容易地正确地再现数据。重放信号振幅检测电路23检测来自重放放大器15的测试数据的重放信号的振幅，而加法器51,52将预先设定的扇区组中的重放信号的振幅值累加到另一个预设从重放信号幅度检测电路23提供的磁盘21上的组的扇区。减法器50计算来自加法器51的第一和值与来自加法器52的第二和值之间的差，并将差值路由到控制器11 控制器根据差值检测记录头与回放头之间的偏差。当记录或再现实际数据时，控制器11基于检测到的偏差使得记录头或重放头的位置被校正。

3. 发明授权

US5617388A Disc recording/reproducing apparatus which uses stored eccentricity data to maintain the read/write head at a constant radial position during a stand-by mode 失效
标题翻译：使用存储的偏心数据的盘记录/再现装置在待机模式期间将读/写头保持在恒定的径向位置
公开(公告)号：US5617388A
公开(公告)日：1997-04-01
申请号：US249395
申请日：1994-05-26
申请人： Hideaki Ishioka , Yoshikazu Onuki , Toru Takeda
发明人： Hideaki Ishioka , Yoshikazu Onuki , Toru Takeda
IPC分类号： G11B7/085 , G11B7/095 , G11B19/00 , G11B21/08
CPC分类号： G11B21/085 , G11B19/00 , G11B7/08505 , G11B7/0953
摘要： A disc recording/reproducing apparatus includes a tracking servo system in which a recording/reproducing head is moved based upon a target position signal indicating its pre-set target position on a disc-shaped recording medium and in which the recording/reproducing head is controlled in its position by a driving unit which employs an output of a controller which is supplied with a position signal obtained by subtracting a deviation from a pre-set target position from the target position signal. The apparatus also includes an eccentricity data storage unit for storing eccentricity data indicating the tracking position of the recording/reproducing head which depends upon eccentricity of the disc-shaped recording medium. The eccentricity data from the eccentricity data storage unit is summed to the target position signal for controlling the position of the recording/reproducing head. In this manner, the current consumption when the recording/reproducing head is halted under a standby state on a pre-set track may be reduced.
摘要翻译：盘记录/再现装置包括一个跟踪伺服系统，其中记录/再现头基于在盘形记录介质上指示其预设目标位置的目标位置信号而移动，并且其中记录/再现头被控制在其位置处，该驱动单元采用控制器的输出，控制器的输出被提供有通过从目标位置信号中减去与预设目标位置的偏差而获得的位置信号。该装置还包括偏心数据存储单元，用于存储指示记录/再现头的跟踪位置的偏心数据，其依赖于盘形记录介质的偏心度。来自偏心数据存储单元的偏心数据与用于控制记录/再现头的位置的目标位置信号相加。以这种方式，可以减少在预设轨道上在备用状态下暂停记录/再现头的电流消耗。

4. 发明授权

US5907448A Magnetic disk device and method of manufacturing same having convex recordings regions, concave guard bands, and impressed concavities and convexities representing control signals 失效
标题翻译：磁盘装置及其制造方法具有凸形记录区域，凹形保护带和表示控制信号的凹入凹凸
公开(公告)号：US5907448A
公开(公告)日：1999-05-25
申请号：US704435
申请日：1996-08-26
申请人： Kenjiro Watanabe , Toru Takeda , Satoru Seko , Kazushige Kawazoe , Takayasu Muto , Osamu Morita , Nobuhiro Hayashi , Takehisa Ishida , Hideaki Ishioka , Takamichi Yamakoshi
发明人： Kenjiro Watanabe , Toru Takeda , Satoru Seko , Kazushige Kawazoe , Takayasu Muto , Osamu Morita , Nobuhiro Hayashi , Takehisa Ishida , Hideaki Ishioka , Takamichi Yamakoshi
IPC分类号： G11B5/09 , G11B5/008 , G11B5/012 , G11B5/55 , G11B5/596 , G11B5/64 , G11B5/73 , G11B5/82 , G11B5/84 , G11B20/10 , G11B20/12 , G11B20/18 , G11B21/10 , G11B25/04 , G11B27/19 , G11B27/30 , G11B33/14
CPC分类号： G11B20/1833 , G11B20/10009 , G11B20/1252 , G11B25/043 , G11B27/19 , G11B27/3027 , G11B33/1486 , G11B5/012 , G11B5/5526 , G11B5/553 , G11B5/59605 , G11B5/59627 , G11B5/59633 , G11B5/82 , G11B20/10194 , G11B20/1258 , G11B2020/1277 , G11B2020/1292 , G11B2220/20 , G11B5/0086
摘要： A magnetic disk drive device that includes a disk-shaped medium with a magnetic film formed on a surface for recording or reproducing information, and a magnetic head for recording on and reproducing information from the disk-shaped medium. The disk-shaped medium has a data recording region and a control signal recording region. The data recording region is impressed to have convex recording regions for recording data and concave guard bands for separating adjacent recording regions. The control signal recording region has impressed concavities and convexities representing tracking marks (for effecting tracking control of the magnetic head), track number indicating marks and track numbers (for identifying the tracks), and clock marks dividing one circumference into equal intervals along a path of angular movement of the magnetic head. The disk-shaped medium has reduced track pitch and increased recording capacity because the concave guard bands can be very narrow without inducing crosstalk, and the tracking marks, track number indicating marks, and clock marks are impressed as concavities and convexities along the path of angular movement of the magnetic head.
摘要翻译：一种磁盘驱动装置，其特征在于，具有形成在用于记录或再现信息的表面上的具有磁膜的盘状介质，以及用于在盘形介质上记录和再现信息的磁头。盘状介质具有数据记录区域和控制信号记录区域。印刷数据记录区域以具有用于记录数据的凸记录区和用于分离相邻记录区的凹保护带。控制信号记录区域具有表示跟踪标记（用于实现磁头的跟踪控制），轨道号指示标记和轨道号（用于识别轨道）的凹凸和时钟标记，沿着路径将一个圆周分成相等的间隔的磁头的角运动。盘形介质具有减小的轨道间距和增加的记录容量，因为凹形保护带可以非常窄而不会引起串扰，并且跟踪标记，轨道号指示标记和时钟标记作为沿着角度的路径的凹凸被印影磁头的运动。

5. 发明授权

US6144517A Magnetic disk device and method of manufacturing same 失效
标题翻译：磁盘装置及其制造方法
公开(公告)号：US6144517A
公开(公告)日：2000-11-07
申请号：US325236
申请日：1999-06-03
申请人： Kenjiro Watanabe , Toru Takeda , Satoru Seko , Kazushige Kawazoe , Takayasu Muto , Osamu Morita , Nobuhiro Hayashi , Takehisa Ishida , Hideaki Ishioka , Takamichi Yamakoshi
发明人： Kenjiro Watanabe , Toru Takeda , Satoru Seko , Kazushige Kawazoe , Takayasu Muto , Osamu Morita , Nobuhiro Hayashi , Takehisa Ishida , Hideaki Ishioka , Takamichi Yamakoshi
IPC分类号： G11B5/09 , G11B5/008 , G11B5/012 , G11B5/55 , G11B5/596 , G11B5/64 , G11B5/73 , G11B5/82 , G11B5/84 , G11B20/10 , G11B20/12 , G11B20/18 , G11B21/10 , G11B25/04 , G11B27/19 , G11B27/30 , G11B33/14
CPC分类号： G11B20/1833 , G11B20/10009 , G11B20/1252 , G11B25/043 , G11B27/19 , G11B27/3027 , G11B33/1486 , G11B5/012 , G11B5/5526 , G11B5/553 , G11B5/59605 , G11B5/59627 , G11B5/59633 , G11B5/82 , G11B20/10194 , G11B20/1258 , G11B2020/1277 , G11B2020/1292 , G11B2220/20 , G11B5/0086
摘要： A magnetic disk drive device that includes a disk-shaped medium with a magnetic film formed on a surface for recording or reproducing information, and a magnetic head for recording on and reproducing information from the disk-shaped medium. The disk-shaped medium has a data recording region and a control signal recording region. The data recording region is impressed to have convex recording regions for recording data and concave guard bands for separating adjacent recording regions. The control signal recording region has impressed concavities and convexities representing tracking marks (for effecting tracking control of the magnetic head), track number indicating marks and track numbers (for identifying the tracks), and clock marks dividing one circumference into equal intervals along a path of angular movement of the magnetic head. The disk-shaped medium has reduced track pitch and increased recording capacity because the concave guard bands can be very narrow without inducing crosstalk, and the tracking marks, track number indicating marks, and clock marks are impressed as concavities and convexities along the path of angular movement of the magnetic head.
摘要翻译：一种磁盘驱动装置，其特征在于，具有形成在用于记录或再现信息的表面上的具有磁膜的盘状介质，以及用于在盘形介质上记录和再现信息的磁头。盘状介质具有数据记录区域和控制信号记录区域。印刷数据记录区域以具有用于记录数据的凸记录区和用于分离相邻记录区的凹保护带。控制信号记录区域具有表示跟踪标记（用于实现磁头的跟踪控制），轨道号指示标记和轨道号（用于识别轨道）的凹凸和时钟标记，沿着路径将一个圆周分成相等的间隔的磁头的角运动。盘形介质具有减小的轨道间距和增加的记录容量，因为凹形保护带可以非常窄而不会引起串扰，并且跟踪标记，轨道号指示标记和时钟标记作为沿着角度的路径的凹凸被印影磁头的运动。

6. 发明授权

US5761165A Disc device providing eccentricity compensation using a head radial position detecting circuit 失效
标题翻译：光盘装置使用头部径向位置检测电路提供偏心补偿
公开(公告)号：US5761165A
公开(公告)日：1998-06-02
申请号：US821328
申请日：1997-03-21
申请人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
发明人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
IPC分类号： G11B5/48 , G11B7/095 , G11B21/10 , G11B7/00
CPC分类号： G11B5/4826 , G11B21/106 , G11B7/0953
摘要： A magnetic or optical disc device that can correctly follow the eccentricity of an eccentrically chucked disc operates with a disc having data tracks provided with uniformly spaced clock marks for providing a timing standard and includes a reproduction head mounted on a turnable arm arranged for movement relative to the disc and a head traveling radial position detector attached to the arm that detects the rotational angle and produces a head position signal. A home index signal is detected and used along with the radial position signal and a derived clock signal to measure eccentricity magnitude that is stored in a memory and subsequently accessed for use in generating a control signal for a phase lock loop that provides an eccentricity adjusted clock signal.
摘要翻译：可以正确跟随偏心卡盘的偏心的磁盘或光盘装置利用具有均匀间隔的时钟标记的数据轨道的盘来操作，以提供定时标准，并且包括安装在可转动臂上的再现头，其布置成相对于盘和头部行进的径向位置检测器，其附接到臂，其检测旋转角度并产生头部位置信号。检测并使用归属索引信号以及径向位置信号和导出的时钟信号来测量存储在存储器中并随后被访问以用于产生用于提供偏心调整时钟的相位锁定环路的控制信号的偏心量值信号。

7. 发明授权

US5905705A Disc device having eccentricity measurement and clock correction 失效
标题翻译：具有偏心测量和时钟校正的光盘设备
公开(公告)号：US5905705A
公开(公告)日：1999-05-18
申请号：US821329
申请日：1997-03-21
申请人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
发明人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
IPC分类号： G11B5/48 , G11B7/095 , G11B21/10 , G11B27/30
CPC分类号： G11B5/4826 , G11B21/106 , G11B7/0953
摘要： A magnetic or optical disc device which can correctly follow the eccentricity of an eccentrically chucked disk and which can immediately follow the eccentricity of the new disk face when there is a changeover of the disc being accessed operates with a disc having data tracks provided with uniformly spaced clock marks for providing a timing standard and includes a reproduction circuit for reproducing data from the disc, a clock sampling circuit for extracting a first clock signal output by the reproduction circuit, an eccentricity magnitude memory section for storing a signal corresponding to the eccentricity of the data tracks with respect to the axis of rotation of the disc; a clock correction section. The device further includes a voltage control oscillator operating according to the signal corresponding to the eccentricity for causing a second clock signal output by the voltage control oscillator to follow the first clock signal by changing the phase or the frequency of the second clock signal and an eccentricity magnitude measuring section for measuring the signal corresponding to the eccentricity from the first clock signal and the output signal of the reproduction circuit and supplying it to the eccentricity magnitude memory section.
摘要翻译：一种磁盘或光盘装置，其可以正确地跟随偏心卡盘的偏心，并且当存在正在被访问的盘的切换时，可以立即跟随新的盘面的偏心，操作具有数据轨道的盘，该盘具有均匀间隔的数据轨道用于提供定时标准的时钟标记，并且包括用于再现来自盘的数据的再现电路，用于提取由再现电路输出的第一时钟信号的时钟采样电路;偏心量值存储部分，用于存储对应于相对于盘的旋转轴的数据轨道; 时钟校正部。该装置还包括电压控制振荡器，该电压控制振荡器根据对应于偏心率的信号进行工作，以使由压控振荡器输出的第二时钟信号通过改变第二时钟信号的相位或频率来跟随第一时钟信号，幅度测量部分，用于测量来自第一时钟信号的对应于偏心率的信号和再现电路的输出信号，并将其提供给偏心量值存储部分。

8. 发明授权

US5745455A Disc device having eccentricity measurement and clock correction 失效
公开(公告)号：US5745455A
公开(公告)日：1998-04-28
申请号：US821330
申请日：1997-03-21
申请人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
发明人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
IPC分类号： G11B5/48 , G11B7/095 , G11B21/10 , G11B27/30
CPC分类号： G11B5/4826 , G11B21/106 , G11B7/0953
摘要： A magnetic or optical disc device which can correctly follow the eccentricity of an eccentrically chucked disk and which can immediately follow the eccentricity of the new disk face when there is a changeover of the disc being accessed operates with a disc having data tracks provided with uniformly spaced clock marks for providing a timing standard and includes a reproduction circuit for reproducing data from the disc, a clock sampling circuit for extracting a first clock signal output by the reproduction circuit, an eccentricity magnitude memory section for storing a signal corresponding to the eccentricity of the data tracks with respect to the axis of rotation of the disc; a clock correction section. The device further includes a voltage control oscillator operating according to the signal corresponding to the eccentricity for causing a second clock signal output by the voltage control oscillator to follow the first clock signal by changing the phase or the frequency of the second clock signal and an eccentricity magnitude measuring section for measuring the signal corresponding to the eccentricity from the first clock signal and the output signal of the reproduction circuit and supplying it to the eccentricity magnitude memory section.

9. 发明授权

US5615191A Disc device having eccentricity measurement and clock correction 失效
标题翻译：具有偏心测量和时钟校正的光盘设备
公开(公告)号：US5615191A
公开(公告)日：1997-03-25
申请号：US555542
申请日：1995-11-09
申请人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
发明人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
IPC分类号： G11B5/48 , G11B7/095 , G11B21/10 , G11B27/30
CPC分类号： G11B5/4826 , G11B21/106 , G11B7/0953
摘要： A magnetic or optical disc device which can correctly follow the eccentricity of an eccentrically chucked disk and Which can immediately follow the eccentricity of the new disk face when there is a changeover of the disc being accessed operates with a disc having data tracks provided with uniformly spaced clock marks for providing a timing standard and includes a reproduction circuit for reproducing data from the disc, a clock sampling circuit for extracting a first clock signal output by the reproduciton circuit, an eccentricity magnitude memory section for storing a signal corresponding to the eccentricity of the data tracks with respect to the axis of rotation of the disc; a clock correction section. The device further includes a voltage control oscillator operating according to the signal corresponding to the eccentricity for causing a second clock signal output by the voltage control oscillator to follow the first clock signal by changing the phase of the second clock signal or the frequency of the second clock signal and an eccentricity magnitude measuring section for measuring the signal corresponding to the eccentricity from the first clock signal and the output signal of the reproduciton circuit and supplying it to the eccentricity magnitude memory section. The eccentricity magnitude measuring section measures the signal corresponding to the eccentricity by calculating the number of tracks which the reproduction head crosses or by using the non-uniformity of spacing observed in a string of clock pulses reproduced from the uniformly spaced clock marks on the disc.
摘要翻译：一种磁盘或光盘装置，其可以正确地跟随偏心卡盘的偏心，并且当存在被访问的盘的切换时，其可以立即跟随新的盘面的偏心，利用具有均匀间隔的数据轨道的盘来操作用于提供定时标准的时钟标记，并且包括用于再现来自盘的数据的再现电路，用于提取再现电路输出的第一时钟信号的时钟采样电路，用于存储对应于相对于盘的旋转轴的数据轨道; 时钟校正部。该装置还包括电压控制振荡器，该电压控制振荡器根据对应于偏心率的信号进行工作，以使由压控振荡器输出的第二时钟信号通过改变第二时钟信号的相位或第二时钟信号的频率来跟随第一时钟信号时钟信号和偏心量值测量部分，用于测量与第一时钟信号和再现电路的输出信号相对应的偏心度的信号并将其提供给偏心量值存储器部分。偏心量值测量部通过计算再现头交叉的轨道的数量或通过使用从盘上均匀间隔的时钟标记再现的一串时钟脉冲中观察到的间隔的不均匀性来测量与偏心度相对应的信号。

10. 发明授权

US5677819A Magnetic disk having improved servo area for protecting equal time interval characteristics and for preventing azimuth loss 失效
标题翻译：磁盘具有改进的伺服区域，用于保护相等的时间间隔特性并防止方位角损失
公开(公告)号：US5677819A
公开(公告)日：1997-10-14
申请号：US511140
申请日：1995-08-04
申请人： Satoru Seko , Toru Takeda
发明人： Satoru Seko , Toru Takeda
IPC分类号： G11B5/012 , G11B5/596 , G11B5/82
CPC分类号： G11B5/012 , G11B5/59633
摘要： A magnetic disk is provided with a track divided by servo areas to record servo signals and data areas to record data signals. Within the servo area, an exclusive region is previously formed to specifically record the servo signal. In one embodiment, the servo region is formed along the moving locus of a magnetic head while writing and reading data, which extends both along the radial direction and peripheral direction of the magnetic disk.
摘要翻译：磁盘具有由伺服区域划分的轨道，以记录伺服信号和数据区域以记录数据信号。在伺服区域内，预先形成专用区域来专门记录伺服信号。在一个实施例中，伺服区沿着磁头的运动轨迹形成，同时沿着磁盘的径向和圆周方向延伸的写入和读取数据。

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