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1. 发明授权

US09897467B2 Rotation number detector 有权
公开(公告)号：US09897467B2
公开(公告)日：2018-02-20
申请号：US14926468
申请日：2015-10-29
申请人： DENSO CORPORATION
发明人： Hirotsugu Ishino
IPC分类号： G11B19/247 , G01D5/20
CPC分类号： G01D5/2006
摘要： A rotation number detector outputs a signal based on a detection signal from a sensor, the detection signal reflecting a movement of a detected portion of a detection object. The output signal from the sensor is rectified by a comparator. A cycle measurement circuit measures a cycle of a rectangular wave signal from the comparator. A variable divider variably divides the cycle in reverse proportion to the measured cycle of the cycle measurement circuit, dividing the cycle by a smaller dividing ratio when the measured cycle becomes longer and dividing the cycle by a greater dividing ratio when the measured cycle becomes shorter. A one shot circuit converts the rectangular wave signal of the variable divider to a signal having a dividing ratio discernible wave form, which represents the dividing ratio of the variable divider, and outputs such a signal.

2. 发明授权

US09208800B2 Recording head with dual coil/dual shield arrangement and high frequency oscillator 有权
标题翻译：记录头采用双线圈/双屏蔽排列和高频振荡器
公开(公告)号：US09208800B2
公开(公告)日：2015-12-08
申请号：US14340979
申请日：2014-07-25
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Tomoko Taguchi , Yusuke Tomoda
IPC分类号： G11B5/17 , G11B5/11 , G11B5/235 , G11B5/31 , G11B5/127 , G11B19/247 , G11B5/00
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3123 , G11B19/247 , G11B2005/0024
摘要： According to one embodiment, a recording head includes a main pole, a trailing shield including a first connecting portion and a second connecting portion, and configured to form together with the main pole a first magnetic core, a leading shield including a first connecting portion connected to the main pole through a magnetic material and an end portion opposing to the end portion of the main pole through a non-magnetic material, and configured to form together with the main pole a second magnetic core, and first and second coils wound around the first and second magnetic cores, and a connection terminal configured to flow a current through the main pole, non-magnetic conductive layer, and trailing shield.
摘要翻译：根据一个实施例，记录头包括主极，后屏蔽，包括第一连接部分和第二连接部分，并且被配置为与主极一起形成第一磁芯，前导屏蔽包括连接到第一连接部分的第一连接部分通过非磁性材料通过磁性材料和与主极端部相对的端部连接到主极，并且被配置为与主极一起形成第二磁芯，以及缠绕在主极上的第一和第二线圈第一和第二磁芯，以及被配置为使电流流经主极，非磁性导电层和后屏蔽的连接端子。

3. 发明授权

US09082451B2 Method of driving optical disc and optical disc drive using the method 有权
标题翻译：使用该方法驱动光盘和光盘驱动器的方法
公开(公告)号：US09082451B2
公开(公告)日：2015-07-14
申请号：US13399002
申请日：2012-02-17
申请人： Ho-seok Yi , Yong-ho Han
发明人： Ho-seok Yi , Yong-ho Han
IPC分类号： G11B15/18 , G11B19/20 , G11B7/09 , G11B19/247
CPC分类号： G11B19/247 , G11B19/2063
摘要： A method of driving an optical disc and an optical disc drive using the method is provided. The method includes rotating an optical disc by a spindle motor, transferring an optical pickup positioned to correspond to the optical disc by driving a sled motor, and decreasing a current supplied to the spindle motor while driving the sled motor.
摘要翻译：提供了使用该方法驱动光盘和光盘驱动器的方法。该方法包括通过主轴电动机旋转光盘，通过驱动滑板电动机传送与光盘相对应的光拾取器，并且在驱动滑动电动机的同时减小提供给主轴电动机的电流。

4. 发明申请

US20050249094A1 Information recording method 失效
标题翻译：信息记录方式
公开(公告)号：US20050249094A1
公开(公告)日：2005-11-10
申请号：US11179521
申请日：2005-07-13
申请人： Harukazu Miyamoto , Yoshio Suzuki , Motoyuki Suzuki , Hisataka Sugiyama , Hiroyuki Minemura , Tetsuya Fushimi , Nobuhiro Tokushuku
发明人： Harukazu Miyamoto , Yoshio Suzuki , Motoyuki Suzuki , Hisataka Sugiyama , Hiroyuki Minemura , Tetsuya Fushimi , Nobuhiro Tokushuku
IPC分类号： G11B7/24 , G11B5/09 , G11B7/00 , G11B7/0037 , G11B7/004 , G11B7/0045 , G11B7/005 , G11B7/006 , G11B7/007 , G11B7/013 , G11B7/09 , G11B19/20 , G11B19/247 , G11B19/28 , G11B20/00 , G11B20/10 , G11B20/12 , G11B27/19 , G11B27/24 , G11B27/28 , G11B27/30
CPC分类号： G11B20/12 , G11B7/0037 , G11B7/004 , G11B7/0045 , G11B7/0053 , G11B7/006 , G11B7/00718 , G11B7/00745 , G11B7/0079 , G11B7/013 , G11B7/0938 , G11B7/24082 , G11B19/20 , G11B19/247 , G11B19/28 , G11B20/10009 , G11B27/19 , G11B27/24 , G11B27/28 , G11B27/3027
摘要： A reproducing apparatus for reproducing information recorded on an optical recording medium having a disk-like substrate, a spiral or concentric-shaped groove structure along tracks formed on the substrate, and each of the tracks being divided into a plurality of recording units. Each of the recording units includes a dropout portion of the groove structure which is a non-groove portion along the track in a circumferential direction of the track, and the groove structure is wobbled in a fixed cycle in a radial direction, which continues in the circumferential direction along the track. The apparatus includes an irradiation source for irradiating a light spot on the optical recording medium, an optical detector for detecting a reflected light from the medium, and a reproducer for reproducing information by using a signal from the detector.
摘要翻译：一种用于再现记录在具有盘状基板的光学记录介质上的信息，沿着形成在基板上的轨道的螺旋或同心形状的槽结构，并且每个轨道被分成多个记录单元的再现装置。每个记录单元包括凹槽结构的缺口部分，该凹槽结构是在轨道的圆周方向上沿着轨道的非凹槽部分，并且凹槽结构在径向上以固定的循环摆动，这在第圆周方向沿着轨道。该装置包括用于照射光记录介质上的光点的照射源，用于检测来自介质的反射光的光检测器，以及用于通过使用来自检测器的信号再现信息的再现器。

5. 发明申请

US20050243700A1 Information recording method 失效
标题翻译：信息记录方式
公开(公告)号：US20050243700A1
公开(公告)日：2005-11-03
申请号：US11179461
申请日：2005-07-13
申请人： Harukazu Miyamoto , Yoshio Suzuki , Motoyuki Suzuki , Hisataka Sugiyama , Hiroyuki Minemura , Tetsuya Fushimi , Nobuhiro Tokushuku
发明人： Harukazu Miyamoto , Yoshio Suzuki , Motoyuki Suzuki , Hisataka Sugiyama , Hiroyuki Minemura , Tetsuya Fushimi , Nobuhiro Tokushuku
IPC分类号： G11B7/24 , G11B5/09 , G11B7/00 , G11B7/0037 , G11B7/004 , G11B7/0045 , G11B7/005 , G11B7/006 , G11B7/007 , G11B7/013 , G11B7/09 , G11B19/20 , G11B19/247 , G11B19/28 , G11B20/00 , G11B20/10 , G11B20/12 , G11B27/19 , G11B27/24 , G11B27/28 , G11B27/30
CPC分类号： G11B20/12 , G11B7/0037 , G11B7/004 , G11B7/0045 , G11B7/0053 , G11B7/006 , G11B7/00718 , G11B7/00745 , G11B7/0079 , G11B7/013 , G11B7/0938 , G11B7/24082 , G11B19/20 , G11B19/247 , G11B19/28 , G11B20/10009 , G11B27/19 , G11B27/24 , G11B27/28 , G11B27/3027
摘要： An apparatus for reproducing information recorded on an optical recording medium, including a disk-like substrate, a spiral or concentric-shaped groove structure along tracks formed on the substrate, each of the tracks being divided into a plurality of recording units. Each of the recording units includes a dropout portion in a circumferential direction of the groove structure with the dropout portion being a non-groove portion. The groove structure is formed with a wobble in a fixed cycle in a radial direction which continues in the circumferential direction along the track. Each length of the recording units is an integer multiple of the cycle of the wobble. The apparatus includes an irradiation source for irradiating a light spot on the medium, an optical detector for detecting a reflected light from the medium, and a reproducer for reproducing information by using a signal from the optical detector.
摘要翻译：一种用于再现记录在光学记录介质上的信息的装置，包括沿着形成在基板上的轨道的盘状基板，螺旋形或同心形的槽结构，每个轨道被分成多个记录单元。每个记录单元在凹槽结构的圆周方向上包括一个缺口部分，其中该缺口部分是非凹槽部分。沟槽结构形成为沿着沿轨道在圆周方向上沿径向延伸的固定循环中的摆动。记录单元的每个长度是摆动周期的整数倍。该装置包括用于照射介质上的光点的照射源，用于检测来自介质的反射光的光学检测器，以及用于通过使用来自光学检测器的信号再现信息的再现器。

6. 发明申请

US20050243696A1 Information recording method 失效
标题翻译：信息记录方式
公开(公告)号：US20050243696A1
公开(公告)日：2005-11-03
申请号：US11179520
申请日：2005-07-13
申请人： Harukazu Miyamoto , Yoshio Suzuki , Motoyuki Suzuki , Hisataka Sugiyama , Hiroyuki Minemura , Tetsuya Fushimi , Nobuhiro Tokushuku
发明人： Harukazu Miyamoto , Yoshio Suzuki , Motoyuki Suzuki , Hisataka Sugiyama , Hiroyuki Minemura , Tetsuya Fushimi , Nobuhiro Tokushuku
IPC分类号： G11B7/24 , G11B5/09 , G11B7/00 , G11B7/0037 , G11B7/004 , G11B7/0045 , G11B7/005 , G11B7/006 , G11B7/007 , G11B7/013 , G11B7/09 , G11B19/20 , G11B19/247 , G11B19/28 , G11B20/00 , G11B20/10 , G11B20/12 , G11B27/19 , G11B27/24 , G11B27/28 , G11B27/30
CPC分类号： G11B20/12 , G11B7/0037 , G11B7/004 , G11B7/0045 , G11B7/0053 , G11B7/006 , G11B7/00718 , G11B7/00745 , G11B7/0079 , G11B7/013 , G11B7/0938 , G11B7/24082 , G11B19/20 , G11B19/247 , G11B19/28 , G11B20/10009 , G11B27/19 , G11B27/24 , G11B27/28 , G11B27/3027
摘要： A recording method for an optical medium having a disk-like substrate, a plurality of tracks extending in a circumferential direction on the substrate and associated with a plurality of grooves, and a plurality of zones being provided on the disk-like substrate and extending between a first position and a second position in a radial direction of the substrate. Each zone including at least two tracks, and each track being divided into a plurality of units of circular arc shape extending in the circumferential direction with radially adjacent units of a respective zone being delimited by a pair of radial lines joined to form a central angle at an apex proximate to a center of the substrate. The method includes providing the optical medium, and recording information on the optical medium by irradiating an optical spot thereon.
摘要翻译：一种具有盘状基板的光学介质的记录方法，在基板上沿圆周方向延伸并且与多个凹槽相关联的多个轨道，并且多个区域设置在盘状基板上，并且在在基板的径向方向上的第一位置和第二位置。每个区域包括至少两个轨道，并且每个轨道被分成在圆周方向上延伸的多个圆弧形单元，其中相应区域的径向相邻单元由连接以形成中心角度的中心角度的一对径向线限定靠近基板中心的顶点。该方法包括：通过在其上照射光点来在光学介质上提供光学介质和记录信息。

7. 发明授权

US6111830A System for creating, reading and writing on rotatable information storage media, an apparatus for determining linear and/or angular velocity 失效
标题翻译：用于在可旋转信息存储介质上创建，读取和写入的系统，用于确定线性和/或角速度的装置
公开(公告)号：US6111830A
公开(公告)日：2000-08-29
申请号：US23943
申请日：1998-02-13
申请人： Casimer M. DeCusatis , Lawrence Jacobowitz
发明人： Casimer M. DeCusatis , Lawrence Jacobowitz
IPC分类号： G11B19/247 , G11B21/08 , G11B27/24 , G11B33/10 , G11B5/09
CPC分类号： G11B27/24 , G11B19/247 , G11B21/083 , G11B33/10
摘要： In a system for writing a plurality of information tracks between adjacent portions of a reference track on a rotatable medium, advantage is taken of the fact that laser beam dithering a cross an edge of a reference track produces signals which are analyzable to determine much more exact radial positions. Reading of a certain number, N, of bits during a known period of time, T, permits the determination of the linear or angular velocity of the disk. Knowledge of this value permits its much more precise control.
摘要翻译：在用于在可旋转介质上的参考轨道的相邻部分之间写入多个信息轨道的系统中，优点在于，激光束抖动参考轨道的边缘的激光束产生可被分析以确定更准确的信号径向位置。在已知时间段T内读取一定数量的N位允许确定盘的线性或角速度。知道这个价值允许更精确的控制。

8. 发明授权

US6084739A Write synchronization system on a headerless format magnetic disk device 失效
标题翻译：在无头格式磁盘设备上写入同步系统
公开(公告)号：US6084739A
公开(公告)日：2000-07-04
申请号：US829432
申请日：1997-03-31
申请人： Nicolas C. Assouad
发明人： Nicolas C. Assouad
IPC分类号： G11B5/012 , G11B19/06 , G11B19/247 , G11B20/10 , G11B20/12 , G11B27/30 , G11B5/596 , G11B5/09
CPC分类号： G11B20/10 , G11B19/06 , G11B19/247 , G11B20/1217 , G11B27/3027 , G11B2020/1287 , G11B2220/2516 , G11B5/012
摘要： A write synchronization system in a headerless format magnetic disk device. The system transmits encoded synchronization signals containing disk administration information such as servo burst information between a servo controller and other disk controller components such as a hard disk controller and a microprocessor or digital signal processor. The servo controller interprets the disk administration information read from the magnetic disk and sends an encoded signal to the other disk controller components for each servo burst encountered on when reading the disk. The disk administration information in the signals can be verified by comparing the contents of a present signal to the contents of at least one previous signal to determine if a servo burst from a sequence of servo bursts has been missed. A missing servo burst can also be identified by measuring the time interval between signals from the servo controller.
摘要翻译：一种写头同步系统，以无头格式磁盘装置。该系统在伺服控制器和诸如硬盘控制器和微处理器或数字信号处理器的其它盘控制器组件之间传送包含诸如伺服脉冲串信息之类的盘管理信息的编码同步信号。伺服控制器解读从磁盘读取的磁盘管理信息，并在读取磁盘时遇到的每个伺服突发信号向其它磁盘控制器组件发送编码信号。可以通过将当前信号的内容与至少一个先前信号的内容进行比较来确定信号中的盘管理信息，以确定是否错过了来自伺服脉冲序列的伺服脉冲串。也可以通过测量来自伺服控制器的信号之间的时间间隔来识别丢失的伺服脉冲串。

9. 发明授权

US6052244A Servo signal processing apparatus, recorded data reading apparatus and method for processing servo signal 失效
公开(公告)号：US6052244A
公开(公告)日：2000-04-18
申请号：US994598
申请日：1997-12-23
申请人： Hiroko Haraguchi , Masaru Sawada
发明人： Hiroko Haraguchi , Masaru Sawada
IPC分类号： G11B5/55 , G11B5/596 , G11B19/247 , G11B21/08 , G11B21/10 , G11B5/09 , G11B5/035
CPC分类号： G11B21/10 , G11B19/247 , G11B21/083 , G11B5/5526 , G11B5/59605 , G11B5/59644 , G11B5/59655
摘要： A servo signal processing apparatus for processing a servo signal corresponding to servo information from a servo area on a recording medium for controlling a head. The servo area includes a servo mark area for storing a servo mark indicative of a head of the servo area, a gray mark area for storing a gray mark indicative of a head of information for position control for the head, and a gray code area for storing information. An A-D converter converts the servo signal to digital data. A digital filter filters the converted data based on a sampling clock, and outputs the filtered digital data. A servo mark detector detects a servo mark based on a continuity of a first predetermined logical value. A gray code decoder detects a gray code based on a continuity of a predetermined logical value. The gray code decoder decodes information stored in a gray code area following the detected gray mark.

10. 发明授权

US6026068A Optical disk apparatus 失效
标题翻译：光盘装置
公开(公告)号：US6026068A
公开(公告)日：2000-02-15
申请号：US717256
申请日：1996-09-20
申请人： Kiyoshi Obata , Shuko Saito , Nozomu Okazaki , Tetsuya Tsuji
发明人： Kiyoshi Obata , Shuko Saito , Nozomu Okazaki , Tetsuya Tsuji
IPC分类号： G11B7/0037 , G11B11/105 , G11B17/04 , G11B17/041 , G11B19/02 , G11B19/12 , G11B19/247 , G11B19/26 , G11B11/00 , G11B7/00
CPC分类号： G11B17/057 , G11B19/02 , G11B19/12 , G11B19/247 , G11B19/26 , G11B11/10597 , G11B2020/183 , G11B7/0037
摘要： A constant linear velocity control (CLV control) for controlling a spindle motor so as to set a linear velocity in a track circumferential direction to be constant and a constant angular velocity control (CAV control) for controlling the spindle motor so as to set a rotation of a medium to be constant are switched and controlled for a change in position in the radial direction of the medium of a pickup in accordance with a detection result of the medium loaded. In the switching control, selection information of the CLV control and the CAV control is previously registered in accordance with the kind of medium and the CLV control or the CAV control is selected in accordance with the corresponding selection information obtained from the detection result of the medium.
摘要翻译：用于控制主轴电动机以将轨道圆周方向上的线速度设定为恒定的恒定线速度控制（CLV控制）和用于控制主轴电机的恒定角速度控制（CAV控制）以设定旋转根据介质负载的检测结果，切换和控制介质的拾取器的介质的径向位置的变化。在切换控制中，CLV控制和CAV控制的选择信息根据介质的种类预先登记，并且根据从介质的检测结果获得的相应选择信息来选择CLV控制或CAV控制。

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