Record/playback head positioning device for optical disc apparatus
    1.
    发明授权
    Record/playback head positioning device for optical disc apparatus 失效
    用于光盘装置的记录/回放头定位装置

    公开(公告)号:US4583212A

    公开(公告)日:1986-04-15

    申请号:US522126

    申请日:1983-08-11

    摘要: An optical disc recording and playback apparatus has a record/playback head adapted to write data into and read them out of information tracks formed on a rotatable optical disc. A carriage carrying the head therewith is driven by a linear motor in the radial direction of the disc perpendicular to the tracks, and then stopped and held at a desired track position. Thereafter, a tracking control is performed by allowing the head to move in the radial direction within a predetermined range.

    摘要翻译: 光盘记录和重放装置具有适于将数据写入数据并将其从可旋转光盘上形成的信息轨迹中读出的记录/重放头。 承载头部的托架在垂直于轨道的盘的径向方向上由线性马达驱动,然后停止并保持在期望的轨道位置。 此后,通过允许磁头在预定范围内沿径向方向移动来进行跟踪控制。

    Moving-coil type motor
    3.
    发明授权
    Moving-coil type motor 失效
    动圈式马达

    公开(公告)号:US4250416A

    公开(公告)日:1981-02-10

    申请号:US954763

    申请日:1978-10-26

    IPC分类号: H02K33/18

    CPC分类号: H02K33/18

    摘要: A moving-coil type motor according to the present invention is composed of a hollow moving coil to which electrical energy is to be applied, a magnetic circuit member made of a material having high permeability which consists of an inner portion disposed within the hollow part of said moving coil and an outer portion disposed outside the same coil, said inner and outer portions being interconnected at their rear ends, and a magnet installed on said magnetic circuit member. The foregoing moving coil is fixed to an arm member supported to be capable of oscillating around a shaft, is curved into a circular arc centering around said shaft, and has a square-shaped cross section. The magnetic circuit member is also curved into a circular arc centering around the foregoing shaft similar to the moving coil, and the shape of the cross section of both the inner portion and the outer portion thereof is square similar to the shape of cross section of the moving coil.

    摘要翻译: 根据本发明的动圈式电动机由要施加电能的中空运动线圈组成,由具有高磁导率的材料制成的磁路部件由设置在中空部分的中空部分内的内部组成 所述活动线圈和设置在相同线圈外部的外部部分,所述内部和外部部分在其后端互连,并且安装在所述磁路部件上的磁体。 上述活动线圈被固定到被支撑为能够围绕轴摆动的臂构件,弯曲成围绕所述轴定心的圆弧,并且具有方形横截面。 磁路部件也相对于运动线圈弯曲成围绕前述轴线的圆弧,并且其内部部分和外部部分的横截面的形状都是与截面形状相似的方形 动圈

    Angularly rotatable mirror apparatus
    4.
    发明授权
    Angularly rotatable mirror apparatus 失效
    角度可旋转的镜子装置

    公开(公告)号:US4186991A

    公开(公告)日:1980-02-05

    申请号:US919630

    申请日:1978-06-27

    CPC分类号: G03B27/526

    摘要: An angularly rotatable mirror apparatus including angularly rotatable mirror means and linear motor means. The angularly rotatable mirror means includes a mirror supported on a bracket and connected through an arm to the linear motor means for angularly rotating the mirror including a magnetic circuit consisting of a permanent magnet, a center pole an outer yoke, and a gap defined between the center pole and the outer yoke, and a movable coil arranged in the gap and connected to the arm. Means is provided for effecting control of the operation of the linear motor means in such a manner that a light flux reflected by the mirror will move at a constant speed on a surface to be scanned by the light flux.

    摘要翻译: 一种角度可旋转的镜子装置,包括角度可旋转的反射镜装置和线性电动机装置。 角度可旋转的反射镜装置包括支撑在支架上的反射镜并通过臂连接到线性电动机装置,用于使反射镜成角度地旋转,所述反射镜包括由永久磁铁,中心极,外轭铁和 中心极和外磁轭,以及布置在间隙中并连接到臂的可动线圈。 提供了用于以这样的方式实现线性电动机装置的操作的控制的装置,即由反射镜反射的光束将以恒定的速度移动到由光束扫描的表面上。

    Method of manufacturing glass articles, method of manufacturing glass gobs, and method of manufacturing optical elements
    7.
    发明授权
    Method of manufacturing glass articles, method of manufacturing glass gobs, and method of manufacturing optical elements 有权
    制造玻璃制品的方法,制造玻璃料滴的方法以及制造光学元件的方法

    公开(公告)号:US08091387B2

    公开(公告)日:2012-01-10

    申请号:US10802837

    申请日:2004-03-18

    IPC分类号: C03B7/10 C03B7/12 C03B7/14

    摘要: A method of manufacturing high-quality preforms from glass melt, manufacturing glass elements, such as lenses, by press molding these preforms and, manufacturing optical elements by reheating and press molding these glass gobs. In the method glass gobs are continuously separated from a glass melt flow continuously flowing out of a nozzle and the separated glass gobs are formed with glass forming members that are intermittently or continuously moving. A support member is made to approach the front end of the nozzle, the front end of the glass melt flow is received by the support member, and the support member is dropped more rapidly than the rate of flow of the glass melt flow to separate a glass gob from the glass melt flow. The separated glass gob is transferred from the support member to a stopped or moving glass forming member to mold a glass article.

    摘要翻译: 一种从玻璃熔体制造高品质预成型件的方法,通过对这些预型件进行压制成型制造玻璃元件,例如透镜,以及通过再加热和压制这些玻璃料滴来制造光学元件。 在该方法中,玻璃料料从连续流出喷嘴的玻璃熔体流连续分离,并且分离的玻璃料滴形成为间歇或连续移动的玻璃形成部件。 使支撑构件靠近喷嘴的前端,玻璃熔体流的前端被支撑构件接收,并且支撑构件比玻璃熔体流的流动速度更快地下落以分离 玻璃料滴从玻璃熔体流出。 分离的玻璃料滴从支撑构件转移到停止或移动的玻璃形成构件以模制玻璃制品。

    Motor control device and magnetic pole position estimation precision confirming method
    8.
    发明授权
    Motor control device and magnetic pole position estimation precision confirming method 有权
    电机控制装置和磁极位置估算精度确认方法

    公开(公告)号:US08049446B2

    公开(公告)日:2011-11-01

    申请号:US12499539

    申请日:2009-07-08

    申请人: Junichi Watanabe

    发明人: Junichi Watanabe

    IPC分类号: H02P21/00

    CPC分类号: H02P21/14

    摘要: A motor control device includes a dq-axis current control unit for generating a dq-axis voltage reference based on a dq-axis current reference and a dq-axis current signal, an initial magnetic pole position estimation unit for estimating a magnetic pole position of the motor upon power-on to generate a magnetic pole position signal, and a magnetic pole position estimation precision confirming unit for supplying a current in a d-axis direction after generation of the magnetic pole position signal with the initial magnetic pole position estimation unit, and checking an error of the magnetic pole position signal based on an angle of movement of the motor.

    摘要翻译: 电动机控制装置包括:dq轴电流控制单元,用于基于dq轴电流基准和dq轴电流信号生成dq轴电压基准;初始磁极位置估计单元,用于估计磁极位置的磁极位置 电动机上产生磁极位置信号;以及磁极位置估计精度确认单元,用于在与初始磁极位置估计单元产生磁极位置信号之后在d轴方向上提供电流, 并根据电动机的运动角检查磁极位置信号的误差。

    Audio control device and audio output device
    9.
    发明申请
    Audio control device and audio output device 有权
    音频控制装置和音频输出装置

    公开(公告)号:US20110255709A1

    公开(公告)日:2011-10-20

    申请号:US13067682

    申请日:2011-06-20

    IPC分类号: H04R3/00 G06F17/00

    CPC分类号: H04S1/007 H04R1/005 H04R5/04

    摘要: An audio output device includes two digital microphone units that, upon receiving sound, convert the sound to PDM digital audio signals in which a state is represented by 1 or 0 in each predetermined period. The audio output device generates half-period digital audio signals, which are signals of a half period of the predetermined period, by using first digital audio signals and second digital audio signals that are the digital audio signals converted by the two digital microphones, where the states of the first digital audio signals are each reflected in one of two half periods corresponding to the predetermined period and states of the second audio signals are each reflected in the other half period. The audio output device then converts the half-period digital audio signals, which are generated by the generator, to analog audio signals and outputs the analog audio signals.

    摘要翻译: 音频输出装置包括两个数字麦克风单元,其在接收到声音时,将声音转换成PDM数字音频信号,其中状态在每个预定周期中以1或0表示。 音频输出装置通过使用作为由两个数字麦克风转换的数字音频信号的第一数字音频信号和第二数字音频信号,产生作为预定周期的半个周期的信号的半周期数字音频信号,其中 第一数字音频信号的状态各自被反映在对应于预定周期的两个半周期中的一个中,并且第二音频信号的状态各自反映在另一个半周期中。 然后,音频输出装置将由发生器产生的半周期数字音频信号转换为模拟音频信号并输出​​模拟音频信号。