Optical pickup control circuit and optical disc drive device
    3.
    发明授权
    Optical pickup control circuit and optical disc drive device 失效
    光拾取控制电路和光盘驱动装置

    公开(公告)号:US08391111B2

    公开(公告)日:2013-03-05

    申请号:US13154779

    申请日:2011-06-07

    IPC分类号: G11B7/00

    CPC分类号: G11B7/0956 G11B7/0941

    摘要: An optical pickup control circuit includes an adding portion that adds a tracking driving signal which is for moving an objective lens, provided to face a discoid optical information recording medium, in a tracking direction of the corresponding optical information recording medium, to a tilt driving signal which is for moving the corresponding objective lens in a tilt direction of the corresponding optical information recording medium, and supplies the signal to a tilt actuator.

    摘要翻译: 一种光学拾取控制电路,包括一个加法部分,其将相对于光学信息记录介质的跟踪方向上设置的面对盘形光信息记录介质的用于移动物镜的跟踪驱动信号添加到倾斜驱动信号 其用于在相应的光学信息记录介质的倾斜方向上移动相应的物镜,并将信号提供给倾斜致动器。

    Disk drive apparatus
    4.
    发明授权

    公开(公告)号:US07099247B2

    公开(公告)日:2006-08-29

    申请号:US11214780

    申请日:2005-08-31

    IPC分类号: G11B7/00

    CPC分类号: G11B19/28 G11B19/247

    摘要: A disk drive apparatus drives, by means of a motor, a disk mounted thereon so as to reproduce signals recorded in the disk. The disk drive apparatus has an edge detecting unit for generating an edge signal XEG indicating a timing of phase switching, in accordance with a plurality of signals CU, CV and CW induced when the motor is driven. The disk drive apparatus further has a drive voltage controlling unit for controlling, in accordance with the edge detection signal XEG, the maximum value of a drive voltage VS for driving said motor. This arrangement implements optimal motor control, while reducing circuit scale and cost and, at the same time, enhancing adaptability of the disk drive apparatus.

    Low profile magnetic transducer assembly with negative pressure slider
    5.
    发明授权
    Low profile magnetic transducer assembly with negative pressure slider 失效
    低压磁传感器组件带负压滑块

    公开(公告)号:US5235484A

    公开(公告)日:1993-08-10

    申请号:US666077

    申请日:1991-03-07

    申请人: Takao Maruyama

    发明人: Takao Maruyama

    IPC分类号: G11B21/21 G11B5/60

    CPC分类号: G11B5/6005

    摘要: In a magnetic transducer assembly for magnetic recording disks, a magnetic slider body has two laterally spaced apart longitudinal rails each having a floating surface and a groove formed between them. A thin-film magnetic core assembly is mounted on an end wall of each of the rails and a magnetic gap is formed on each floating surface. A suspension element has one end secured to the bottom surface of the groove for maintaining the slider assembly in a constant position with respect to the surface of the disk. Preferably, the longitudinal rails are bridged bya laterally extending block to create negative pressure between the rails by relative movement between the assembly and the surface of the disk, and the suspension element exerts pressure in a direction away from the surface of the disk.

    摘要翻译: 在用于磁记录盘的磁换能器组件中,磁性滑块体具有两个横向间隔开的纵向轨道,每个纵向轨道具有浮动表面和在它们之间形成的凹槽。 薄膜磁芯组件安装在每个轨道的端壁上,并且在每个浮动表面上形成磁隙。 悬挂元件的一端固定到凹槽的底表面,用于将滑块组件相对于盘的表面保持在恒定位置。 优选地,纵向轨道由横向延伸的块桥接,以通过组件和盘表面之间的相对运动在轨道之间产生负压,并且悬挂元件沿远离盘表面的方向施加压力。

    Semiconductor device
    6.
    发明授权
    Semiconductor device 有权
    半导体器件

    公开(公告)号:US08304856B2

    公开(公告)日:2012-11-06

    申请号:US12880764

    申请日:2010-09-13

    IPC分类号: H01L27/02

    CPC分类号: H01L29/8611 H01L27/0814

    摘要: A serially-connected diode pair made of diodes having a high withstand voltage and a low on-resistance is formed based on a high withstand voltage vertical PNP bipolar transistor process technology. Two of the diode pairs are connected in parallel to form a bridge so that there is formed a high-efficiency full-wave rectifier circuit that is free from a leakage current due to a parasitic transistor. The serially-connected diode pair is formed by connecting a diode composed of a P type semiconductor substrate, that makes an anode, and an N type buried layer, that makes a cathode, and a diode composed of a P+ type conductive layer, that makes an anode, and an N type epitaxial layer, that makes a cathode, in series with an electrode AC1. An N+ type buried layer and an N+ type conductive layer are formed to prevent an electric potential at the N+ type buried layer from becoming lower than an electric potential at a P+ type buried layer even when a large positive voltage is applied to the electrode AC1, so as to prevent a parasitic PNP transistor composed of the P+ type buried layer, the N+ type buried layer and the P type semiconductor substrate, that make an emitter, a base and a collector, respectively, from turning on.

    摘要翻译: 基于高耐压垂直PNP双极晶体管工艺技术,形成具有高耐受电压和低导通电阻的二极管串联二极管对。 两个二极管对并联连接形成桥,从而形成一个高效全波整流电路,该电路由于寄生晶体管而没有漏电流。 串联连接的二极管对通过连接由构成阳极的P型半导体衬底和形成阴极的N型掩埋层构成的二极管和由P +型导电层构成的二极管来形成, 阳极和N型外延层,其形成与电极AC1串联的阴极。 形成N +型掩埋层和N +型导电层,以防止N +型掩埋层的电位变得低于P +型掩埋层的电位,即使对电极AC1施加大的正电压, 以防止分别形成发射极,基极和集电极的由P +型掩埋层,N +型掩埋层和P型半导体基板构成的寄生PNP晶体管导通。

    OPTICAL PICKUP CONTROL CIRCUIT AND OPTICAL DISC DRIVE DEVICE
    7.
    发明申请
    OPTICAL PICKUP CONTROL CIRCUIT AND OPTICAL DISC DRIVE DEVICE 失效
    光学拾取控制电路和光盘驱动器件

    公开(公告)号:US20110305123A1

    公开(公告)日:2011-12-15

    申请号:US13154779

    申请日:2011-06-07

    IPC分类号: G11B7/095

    CPC分类号: G11B7/0956 G11B7/0941

    摘要: An optical pickup control circuit includes an adding portion that adds a tracking driving signal which is for moving an objective lens, provided to face a discoid optical information recording medium, in a tracking direction of the corresponding optical information recording medium, to a tilt driving signal which is for moving the corresponding objective lens in a tilt direction of the corresponding optical information recording medium, and supplies the signal to a tilt actuator.

    摘要翻译: 一种光学拾取控制电路,包括一个加法部分,其将相对于光学信息记录介质的跟踪方向上设置的面对盘状光信息记录介质的物镜的跟踪驱动信号与倾斜驱动信号相加 其用于在相应的光学信息记录介质的倾斜方向上移动相应的物镜,并将信号提供给倾斜致动器。

    Disk drive apparatus for optimum motor control
    8.
    发明授权
    Disk drive apparatus for optimum motor control 失效
    用于最佳电机控制的磁盘驱动装置

    公开(公告)号:US07042821B2

    公开(公告)日:2006-05-09

    申请号:US10145727

    申请日:2002-05-16

    IPC分类号: G11B7/00

    CPC分类号: G11B19/28 G11B19/247

    摘要: A disk drive apparatus drives, by means of a motor, a disk mounted thereon so as to reproduce signals recorded in the disk. The disk drive apparatus has an edge detecting unit for generating an edge signal XEG indicating a timing of phase switching, in accordance with a plurality of signals CU, CV and CW induced when the motor is driven. The disk drive apparatus further has a drive voltage controlling unit for controlling, in accordance with the edge detection signal XEG, the maximum value of a drive voltage VS for driving said motor. This arrangement implements optimal motor control, while reducing circuit scale and cost and, at the same time, enhancing adaptability of the disk drive apparatus.

    摘要翻译: 磁盘驱动装置通过马达驱动安装在其上的盘,以便再现记录在盘中的信号。 磁盘驱动装置具有边缘检测单元,用于根据当电机被驱动时感应到的多个信号CU,CV和CW产生指示相位切换定时的边沿信号XEG。 磁盘驱动装置还具有用于根据边缘检测信号XEG控制用于驱动所述电动机的驱动电压VS的最大值的驱动电压控制单元。 这种布置实现了最佳的电机控制,同时降低了电路规模和成本,同时提高了磁盘驱动装置的适应性。

    Disk drive apparatus
    9.
    发明申请
    Disk drive apparatus 失效
    磁盘驱动装置

    公开(公告)号:US20050286371A1

    公开(公告)日:2005-12-29

    申请号:US11214780

    申请日:2005-08-31

    CPC分类号: G11B19/28 G11B19/247

    摘要: A disk drive apparatus drives, by means of a motor, a disk mounted thereon so as to reproduce signals recorded in the disk. The disk drive apparatus has an edge detecting unit for generating an edge signal XEG indicating a timing of phase switching, in accordance with a plurality of signals CU, CV and CW induced when the motor is driven. The disk drive apparatus further has a drive voltage controlling unit for controlling, in accordance with the edge detection signal XEG, the maximum value of a drive voltage VS for driving said motor. This arrangement implements optimal motor control, while reducing circuit scale and cost and, at the same time, enhancing adaptability of the disk drive apparatus.

    摘要翻译: 磁盘驱动装置通过马达驱动安装在其上的盘,以便再现记录在盘中的信号。 磁盘驱动装置具有边缘检测单元,用于根据当电机被驱动时感应到的多个信号CU,CV和CW产生指示相位切换定时的边沿信号XEG。 磁盘驱动装置还具有用于根据边缘检测信号XEG控制用于驱动所述电动机的驱动电压VS的最大值的驱动电压控制单元。 这种布置实现了最佳的电机控制,同时降低了电路规模和成本,同时提高了磁盘驱动装置的适应性。

    Method of paper machine control and apparatus for the method
    10.
    发明授权
    Method of paper machine control and apparatus for the method 有权
    纸机控制方法及方法

    公开(公告)号:US06904331B2

    公开(公告)日:2005-06-07

    申请号:US10058451

    申请日:2002-01-28

    CPC分类号: D21G9/0036

    摘要: The present invention is characterized in that in a simulation for predicting a steam pressure setpoint after grade change, an initial moisture percentage is evaluated from differences between bone-dry basis weights and between machine speeds before and after grade change; the bone-dry coated weight of a size is evaluated from the flow rate and concentration thereof; and then the dryer inlet moisture percentage of a web after a size press is calculated from the coated weight. Thus, the invention intends to improve the quality of products through precise dryer control, as well as reduce the time required for grade change, by precisely predicting the web's initial moisture percentage at the dryer inlet after grade change and precisely and quickly controlling dryer steam pressure during grade change.

    摘要翻译: 本发明的特征在于,在用于在等级变化之后预测蒸汽压力设定值的模拟中,从等级变化前后的骨干基重和机器速度之间的差异来评估初始水分百分比; 根据其流速和浓度评价尺寸的骨干涂布重量; 然后根据涂布重量计算出压榨后的幅材的干燥器入口湿度百分比。 因此,本发明旨在通过精确的干燥器控制来提高产品的质量,并且通过精确地预测在变化后的干燥器入口处的纤维网的初始水分百分比以及精确且快速地控制干燥器蒸气压力来减少变化所需的时间 在成绩改变