公开(公告)号：US20070274000A1

公开(公告)日：2007-11-29

申请号：US11807034

申请日：2007-05-25

申请人： Haruo Andoh ,  Taku Kitagawa

发明人： Haruo Andoh ,  Taku Kitagawa

IPC分类号： G11B21/02

CPC分类号： G11B19/20 ,  G11B5/00

摘要： Embodiments in accordance with the present invention prevent abnormal action of the actuator of a disk drive. According to an embodiment of the invention, in the process of startup (power on reset (POR)), a hard disk drive (HDD) checks whether an arm electronics (AE) port table stored in an EEPROM agrees with the ports of an AE to which head device portions are actually connected before it starts the rotation of a magnetic disk to move the actuator onto a user data area. Thus, even if an HDA and a reused circuit board do not agree at the manufacture of the HDD, the abnormal action of the actuator can be prevented.

摘要翻译： 根据本发明的实施例防止磁盘驱动器的致动器的异常动作。 根据本发明的实施例，在启动（上电复位（POR））的过程中，硬盘驱动器（HDD）检查存储在EEPROM中的臂电子设备（AE）端口表是否与AE的端口一致 在开始旋转磁盘以将致动器移动到用户数据区域之前，头部装置部分实际连接到哪个头部装置部分。 因此，即使HDA和重用电路板在制造HDD时不一致，也可以防止致动器的异常动作。

公开(公告)号：US09467599B2

公开(公告)日：2016-10-11

申请号：US13704310

申请日：2012-01-19

申请人： Hiroyuki Hosaka ,  Taku Kitagawa

发明人： Hiroyuki Hosaka ,  Taku Kitagawa

IPC分类号： G09G3/36 ,  H04N5/14

CPC分类号： H04N5/14 ,  G09G3/3648 ,  G09G2320/0209 ,  G09G2320/0257 ,  G09G2320/0261 ,  G09G2320/103 ,  G09G2340/16

摘要： A video processing circuit detects a risk boundary, which a portion of the boundary between a dark pixel and a bright pixel in an image represented by a video signal Vid-in, and is determined by a tilt azimuth of liquid crystal molecules, from the boundary, and corrects a video signal corresponding to at least one of the dark pixel and the bright pixel which is contiguous to the detected risk boundary in at least one field of a plurality of fields constituting one frame such that a period in which the risk boundary is present in one frame period is shortened.

摘要翻译： 视频处理电路检测风险边界，该风险边界是由视频信号Vid-in表示的图像中的暗像素和亮像素之间的边界的一部分，并且由液晶分子的倾斜方位角从边界 并且对构成一帧的多个场的至少一个场中的与检测到的风险边界邻接的暗像素和亮像素中的至少一个对应的视频信号进行校正，使得风险边界为 存在于一帧期间缩短。

公开(公告)号：US08638289B2

公开(公告)日：2014-01-28

申请号：US12606790

申请日：2009-10-27

申请人： Hidehito Iisaka ,  Hiroyuki Hosaka ,  Taku Kitagawa ,  Shuichi Nakanishi ,  Atsushi Kato

发明人： Hidehito Iisaka ,  Hiroyuki Hosaka ,  Taku Kitagawa ,  Shuichi Nakanishi ,  Atsushi Kato

IPC分类号： G09G3/36

CPC分类号： G09G3/3413 ,  G09G3/2003 ,  G09G3/3607 ,  G09G3/3648 ,  G09G2310/0205 ,  G09G2310/0235 ,  G09G2310/04 ,  G09G2320/0242 ,  G09G2340/06

摘要： A driving method includes: dividing a unit period into a plurality of sub-frame periods corresponding to the primary colors; writing a primary color component in each sub-frame period by a first scan executed on the plurality of pixels; irradiating, in each sub-frame period, the plurality of pixels with the corresponding primary color of light by the irradiation unit at a timing that is after the first scan and before the first scan of a subsequent sub-frame period; and waiting a wait period that is from when the first scan of one primary color component among the at least three colors ends until when the irradiation unit starts irradiating the one primary color of light, the wait period for the one primary color being different from wait periods for the other colors.

摘要翻译： 驱动方法包括：将单位周期划分成与原色对应的多个子帧周期; 通过在所述多个像素上执行的第一扫描在每个子帧周期中写入原色分量; 在每个子帧周期中，在第一次扫描之后的时刻和后续子帧周期的第一次扫描之前，通过照射单元照射具有对应的原色的多个像素; 并且等待从至少三种颜色中的一个原色分量的第一次扫描结束之后的等待时间，直到照射单元开始照射一个原色的光时，一个原色的等待周期不同于等待 其他颜色的时期。

公开(公告)号：US09142175B2

公开(公告)日：2015-09-22

申请号：US13315697

申请日：2011-12-09

申请人： Hiroyuki Hosaka ,  Taku Kitagawa

发明人： Hiroyuki Hosaka ,  Taku Kitagawa

IPC分类号： G09G3/36

CPC分类号： G09G3/3648 ,  G09G2320/0209 ,  G09G2320/10 ,  G09G2340/16

摘要： A video processing circuit detects a risk boundary that is a part of a boundary between a dark pixel and a bright pixel, and is determined in accordance with the tilt azimuth of liquid crystal molecules from a boundary changed over the previous frame to the current frame and, for at least one side of dark pixels and bright pixels brought into contact with the detected risk boundary, corrects a video signal designating the application voltage of a liquid crystal element corresponding to the pixel of the frame brought into contact with the risk boundary out of a plurality of frames from the current frame to k frames (here, k is a natural number) following the current frame such that a lateral direction electric field generated between the dark pixel and the bright pixel decreases.

摘要翻译： 视频处理电路检测作为暗像素和亮像素之间的边界的一部分的风险边界，并且根据从先前帧改变到当前帧的边界的液晶分子的倾斜方位来确定， 对于与检测到的风险边界接触的暗像素和亮像素的至少一侧，校正视频信号，其指定对应于与风险边界接触的帧的像素的液晶元件的施加电压， 从当前帧到当前帧之后的k个帧（这里，k是自然数）的多个帧，使得在暗像素和亮像素之间产生的横向电场减小。

公开(公告)号：US20130083244A1

公开(公告)日：2013-04-04

申请号：US13704310

申请日：2012-01-19

申请人： Hiroyuki Hosaka ,  Taku Kitagawa

发明人： Hiroyuki Hosaka ,  Taku Kitagawa

IPC分类号： H04N5/14

CPC分类号： H04N5/14 ,  G09G3/3648 ,  G09G2320/0209 ,  G09G2320/0257 ,  G09G2320/0261 ,  G09G2320/103 ,  G09G2340/16

摘要： A video processing circuit detects a risk boundary, which a portion of the boundary between a dark pixel and a bright pixel in an image represented by a video signal Vid-in, and is determined by a tilt azimuth of liquid crystal molecules, from the boundary, and corrects a video signal corresponding to at least one of the dark pixel and the bright pixel which is contiguous to the detected risk boundary in at least one field of a plurality of fields constituting one frame such that a period in which the risk boundary is present in one frame period is shortened.

摘要翻译： 视频处理电路检测风险边界，该风险边界是由视频信号Vid-in表示的图像中的暗像素和亮像素之间的边界的一部分，并且由液晶分子的倾斜方位角从边界 并且对构成一帧的多个场的至少一个场中的与检测到的风险边界邻接的暗像素和亮像素中的至少一个对应的视频信号进行校正，使得风险边界为 存在于一帧期间缩短。

公开(公告)号：US06362929B1

公开(公告)日：2002-03-26

申请号：US09189075

申请日：1998-11-09

申请人： Koichi Arai ,  Yasuhiro Kotani ,  Taku Kitagawa

发明人： Koichi Arai ,  Yasuhiro Kotani ,  Taku Kitagawa

IPC分类号： G11B2102

CPC分类号： G11B5/54 ,  G11B21/12

摘要： The present invention provides a retract circuit for a disk drive storage device that increases the reliability of a disk drive, and reduces the manufacturing cost. If the power supply of the disk drive is turned off, the retract circuit receives the current due to a back electromotive force from a spindle motor and clips it to a predetermined value or below, and supplies the current equal to or smaller than the predetermined value to the voice coil of a VCM. Then, the VCM drives a carriage, which swings to retract a head slider to the landing area of the disk. If the power is turned off, an FET transistor is turned on, and the current due to the back electromotive force is supplied to the voice coil via the FET transistor, a resistor, and a second FET. If the current due to the back electromotive force exceeds a predetermined value depending on the value of the resistor, two transistors are turned on. Since this turns off the second FET transistor to shut off the current supply path, the supplied current is clipped to the above predetermined value, and thus the rotational speed of the carriage is also limited.

摘要翻译： 本发明提供了一种用于磁盘驱动器存储装置的缩回电路，其提高了磁盘驱动器的可靠性，并降低了制造成本。 如果磁盘驱动器的电源被关闭，则回缩电路由于主轴电动机的反电动势而接收电流并且将其剪切到预定值或更低的值，并且提供等于或小于预定值的电流 到VCM的音圈。 然后，VCM驱动一个滑架，其摆动以将磁头滑块缩回到磁盘的着陆区域。 如果电源关闭，则FET晶体管导通，并且由反电动势产生的电流经由FET晶体管，电阻器和第二FET提供给音圈。 如果由于反电动势导致的电流根据电阻器的值超过预定值，则两个晶体管导通。 由于这样关闭第二FET晶体管以切断电流供给路径，所供给的电流被限制到上述预定值，因此滑架的转速也受到限制。