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公开(公告)号：US11074936B2
公开(公告)日：2021-07-27
申请号：US16939447
申请日：2020-07-27
发明人： Toru Watanabe , Takao Furuhashi , Akihiro Yamazaki
摘要： According to one embodiment, a magnetic disk device includes a magnetic disk, a magnetic head including a read head to read data from the magnetic disk and a write head to write data to the magnetic disk, and a controller configured to control read/write from/to the magnetic disk by the magnetic head. The magnetic head includes a thermal actuator configured to project a head surface of the magnetic head to a recording surface of the magnetic disk, and a detector configured to detect a gap between the head surface and the recording surface of the magnetic disk. The controller controls a degree of projection of the magnetic head to the recording surface by the thermal actuator corresponding to the gap detected by the detector during the read/write.
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公开(公告)号：US20210193178A1
公开(公告)日：2021-06-24
申请号：US16939447
申请日：2020-07-27
发明人： Toru Watanabe , Takao Furuhashi , Akihiro Yamazaki
摘要： According to one embodiment, a magnetic disk device includes a magnetic disk, a magnetic head including a read head to read data from the magnetic disk and a write head to write data to the magnetic disk, and a controller configured to control read/write from/to the magnetic disk by the magnetic head. The magnetic head includes a thermal actuator configured to project a head surface of the magnetic head to a recording surface of the magnetic disk, and a detector configured to detect a gap between the head surface and the recording surface of the magnetic disk. The controller controls a degree of projection of the magnetic head to the recording surface by the thermal actuator corresponding to the gap detected by the detector during the read/write.
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公开(公告)号：US10984831B1
公开(公告)日：2021-04-20
申请号：US16929887
申请日：2020-07-15
发明人： Jianguo Zhou , Li Zhou , Feng Hong
摘要： A data storage device is disclosed comprising an actuator configured to actuate a head over a disk surface, and a vibration sensor configured to generate a vibration signal (VS). Control circuitry comprising a servo control system having a torque rejection curve (TRC) configured to control the actuator is configured to measure a position error signal (PES) of the head, and measure the VS output by the vibration sensor. A feed-forward compensator is configured based on PES/VS/TRC. While seeking the head across the disk surface, the VS is processed using the feed-forward compensator to generate a feed-forward compensation during a settle interval of the seek, and the actuator is controlled using the feed-forward compensation during the settle interval.
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4.发明申请公开(公告)号：US20190355390A1
公开(公告)日：2019-11-21
申请号：US16404489
申请日：2019-05-06
发明人： Hidetaka Tabuchi
摘要： An information processing apparatus includes a hard disk drive including a disk configured to store data therein and a head configured to access the disk and a control unit. The control unit causes the head to be retracted to a home position after a predetermined time period, based on an operation mode, has passed after performing control to cause the head to access the disk.
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公开(公告)号：US10290316B1
公开(公告)日：2019-05-14
申请号：US16003493
申请日：2018-06-08
发明人： Shen-Keng Liu , Tse-Ming Lan
摘要： A detection system of vinyl record players for detecting end of playback is revealed. The system includes a vinyl record player and a vinyl record control module. The vinyl record player consists of a tone arm, a cartridge connected to one end of the tone arm, a stylus connected to the cartridge, and a turntable. The vinyl record control module is arranged at the vinyl record player and is composed of a signal analysis unit, a signal output unit, a signal reading unit, and a vinyl record control unit electrically connected. The vinyl record control unit is electrically connected to a turntable control unit for stopping rotation of the turntable, or electrically connected to a tone arm lifting unit for ascending the tone arm, or electrically connected to both the turntable control unit and the tone arm lifting unit.
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6.发明申请公开(公告)号：US20050057834A1
公开(公告)日：2005-03-17
申请号：US10664296
申请日：2003-09-17
申请人： Toshiki Hirano , Ullal Nayak , Qinghua Zeng
发明人： Toshiki Hirano , Ullal Nayak , Qinghua Zeng
CPC分类号： G11B5/6005 , G11B5/012 , G11B5/4826 , G11B5/4833 , G11B19/04
摘要： A Hard Disk Drive (HDD) includes a write-inhibit signal that is generated by a head-disk interaction sensor during a write process that is integrated with a suspension of the HDD when fly-height modulation of the slider is detected during a write process. The suspension load beam includes a dimple and a laminated flexure. The laminated flexure includes a surface that is adapted to receive a slider and a surface that is adapted to contact the dimple. The head-disk interaction sensor is fabricated as part of the laminations of the flexure. The head-disk interaction sensor can be an accelerometer that senses an acceleration of the flexure when the slider contacts the disk of the disk drive and/or a pressure sensor that senses a pressure between the flexure and the dimple when the slider contacts the disk. A write-inhibit circuit is responsive to the sensor signal by inhibiting the write process.
摘要翻译： 硬盘驱动器（HDD）包括在写入处理期间由头盘交互传感器生成的禁止写入信号，该写入处理在写入处理期间检测到滑块的高度调制时与HDD的暂停集成 。 悬挂载荷梁包括凹坑和层压挠曲件。 层压挠曲包括适于接纳滑块和适于接触凹坑的表面的表面。 头盘相互作用传感器被制造为挠曲件的叠片的一部分。 头盘相互作用传感器可以是当滑块接触盘驱动器的盘时感测弯曲加速度的加速度计和/或当滑块接触盘时感测弯曲部和凹部之间的压力的压力传感器。 禁止写入电路通过抑制写入过程来响应于传感器信号。
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公开(公告)号：US5734631A
公开(公告)日：1998-03-31
申请号：US543083
申请日：1995-10-13
申请人： Yuji Ikedo , Yoshifumi Masunaga , Kanya Matsumoto
发明人： Yuji Ikedo , Yoshifumi Masunaga , Kanya Matsumoto
IPC分类号： G11B7/00 , G11B7/0037 , G11B7/005 , G11B7/085 , G11B7/14 , G11B19/02 , G11B19/14 , G11B21/00 , G11B21/02 , G11B21/08 , G11B27/10 , G11B27/36 , G11B7/12
CPC分类号： G11B27/36 , G11B21/00 , G11B21/083 , G11B27/105 , G11B7/14 , G11B19/02 , G11B19/14 , G11B7/0037
摘要： A disc player includes: a plurality of guide devices arranged radiately in radial directions of a disc from a rotary axis of the disc. Each of the guide devices includes two parallel shafts vertically arranged for supporting at least one pickup device in a manner slidable in the radial direction. The vertical positions of the parallel shafts of one of the guide devices are different from the vertical positions of the parallel shafts of the guide device neighboring to the one guide device so that the parallel shafts substantially vertically aligned at inner end portions of the shafts on the side of the rotary axis.
摘要翻译： 光盘播放器包括：多个引导装置，其从盘的旋转轴线沿盘的径向方向辐射布置。 每个引导装置包括两个垂直布置的平行轴，用于以沿径向可滑动的方式支撑至少一个拾取装置。 一个导向装置的平行轴的垂直位置不同于与一个导向装置相邻的导向装置的平行轴的垂直位置，使得平行轴基本垂直地对准在轴上的轴的内端部 一侧的旋转轴。
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8.发明授权
公开(公告)号：US5182734A
公开(公告)日：1993-01-26
申请号：US465123
申请日：1990-02-20
申请人： Tetsu Watanabe , Tetsuji Kawashima , Goro Fujita
发明人： Tetsu Watanabe , Tetsuji Kawashima , Goro Fujita
IPC分类号： G11B11/10 , G11B11/105 , G11B19/14 , G11B33/14
CPC分类号： G11B33/144 , G11B11/10508 , G11B11/10513 , G11B11/1053 , G11B11/10595 , G11B19/14
摘要： In a magneto-optical recording apparatus, in which light spots are sequentially formed on a magneto-optical disk at the timing of a predetermined reference clock signal while a modulating magnetic field, which is reversed in polarity as a function of record data in synchronism with the reference clock signals, is applied to the disk for magnetically recording the record data thereon; the timing of polarity reversal of the modulating magnetic field with respect to the reference clock signal is delayed as a function of the magnetic and/or temperature characteristics of the magneto-optical disk to permit a magnetized domain to be formed at the correct position with respect to the timing of the reference clock signal. The intensity and/or duration of intermittent energizing of the light beam is controlled as a function of the ambient temperature of the magneto-optical disk and/or the radial sweeping position of the light spot to permit each magnetized domain to be formed at the correct position with respect to the timing of the reference clock signal.
摘要翻译： PCT No.PCT / JP89 / 00612 Sec。 371日期1990年2月20日 102（e）1990年2月20日PCT PCT 1991年6月19日PCT公布。 WO89 / 12889 PCT公开号 日期为1989年12月28日。在磁光记录装置中，在预定的基准时钟信号的定时将光斑依次形成在磁光盘上，同时将极性反转的调制磁场作为 将与参考时钟信号同步的记录数据的功能应用于用于在其上磁记录记录数据的磁盘; 相对于参考时钟信号的调制磁场的极性反转的定时被延迟为磁光盘的磁性和/或温度特性的函数，以允许磁化域形成在与 到参考时钟信号的定时。 光束的间歇激励的强度和/或持续时间被控制为光磁盘的环境温度和/或光斑的径向扫掠位置的函数，以允许每个磁化域形成在正确的 相对于参考时钟信号的定时的位置。
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公开(公告)号：US5083229A
公开(公告)日：1992-01-21
申请号：US509860
申请日：1990-04-16
CPC分类号： G11B21/083 , G11B19/14
摘要： The method of the invention is performed on a disk drive with at least a rotatable disk and a head/arm mechanism movable thereover. The disk has a plurality of concentric tracks, including innermost and outermost tracks and an intermediate track positioned therebetween, with the intermediate track including often-used records. The method reduces movements of the head/arm mechanism through the steps of: positioning the head/arm mechanism over the intermediate track; moving the head/arm mechanism away from the intermediate track to another track to perform a requested read operation; moving the head/arm mechanism back to the intermediate track from the further track and performing write actions in the tracks over which the head/arm mechanism moves in its traversal back to the intermediate track.
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10.发明授权Head position control mechanism for a magnetic disk apparatus with head locking 失效磁头锁定磁头装置的磁头位置控制机构
公开(公告)号：US4807072A
公开(公告)日：1989-02-21
申请号：US899940
申请日：1986-08-25
申请人： Mamoru Ono , Kenji Takeuchi
发明人： Mamoru Ono , Kenji Takeuchi
摘要： In a magnetic disk apparatus such as a Winchester drive, a head position control mechanism is provided for locking the transducer head on a noneffective surface region of the magnetic disk, where no data is to be stored, as when the apparatus is powered off. A locking lever pivots in a plane parallel to the disk plane for movement into and out of locking engagement with a rotary member rotatable jointly with the head arm about a common axis. A solenoid holds the locking lever out of locking engagement with the rotary member during the progress of data transfer between disk and head. Upon completion of the data transfer, or when the apparatus is electrically turned off, the solenoid becomes deenergized, permitting the locking lever to be sprung into locking engagement with the rotary member. Then the head arm transports the head to, and allows the same to land on, the noneffective surface region of the disk. The head is locked in that position as long as the locking lever remains in locking engagement with the rotary member.
摘要翻译： 在诸如温彻斯特驱动器的磁盘装置中，提供了一种头位置控制机构，用于将换能器头部锁定在磁盘的无效表面区域上，其中不存储数据，如同设备断电时一样。 锁定杆在与盘平面平行的平面中枢转，用于与与头臂围绕公共轴线共同旋转的旋转构件移动进入和离开锁定接合。 在盘和头之间的数据传送过程中，螺线管将锁定杆保持与旋转构件的锁定接合。 在完成数据传送时，或者当设备电气关闭时，螺线管变为断电状态，允许锁定杆与旋转构件锁定接合。 然后，头臂将磁头传送到磁盘的无效表面区域，并允许其同时到达。 只要锁定杆保持与旋转构件锁定接合，头部被锁定在该位置。
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