Ultrasonic Transducer and Ultrasonic Speaker Using the Same
    21.
    发明申请
    Ultrasonic Transducer and Ultrasonic Speaker Using the Same 有权
    超声波传感器和超声波扬声器使用它

    公开(公告)号:US20080013761A1

    公开(公告)日:2008-01-17

    申请号:US11629248

    申请日:2005-05-11

    IPC分类号: H04R19/02

    CPC分类号: B06B1/0292

    摘要: An ultrasonic transducer includes: a fixed electrode having corrugations on the surface; a vibrating film having an electrode layer and disposed on the surface of the fixed electrode; and a holding member which holds the fixed electrode and the vibrating film. The ultrasonic transducer is driven by applying an AC signal between the electrode layer of the vibrating film and the fixed electrode, and generates a sound pressure of at least 120 dB within a frequency range from 20 kHz to 120 kHz.

    摘要翻译: 超声波换能器包括:在表面上具有波纹的固定电极; 具有电极层并设置在固定电极的表面上的振动膜; 以及保持固定电极和振动膜的保持构件。 通过在振动膜的电极层和固定电极之间施加AC信号来驱动超声波换能器,并且在20kHz至120kHz的频率范围内产生至少120dB的声压。

    Ultrasonic Transducer and Ultrasonic Speaker Using the Same
    22.
    发明申请
    Ultrasonic Transducer and Ultrasonic Speaker Using the Same 有权
    超声波传感器和超声波扬声器使用它

    公开(公告)号:US20070242843A1

    公开(公告)日:2007-10-18

    申请号:US11596759

    申请日:2005-04-07

    IPC分类号: H04R19/00

    CPC分类号: H04R17/005 H04R2217/03

    摘要: An ultrasonic transducer includes: a pair of fixed electrodes including a conductive member; a vibrating film having a conductive layer; and a member which holds the pair of fixed electrodes and the vibrating film. The vibrating film is formed of nonconductive bodies and has an electrode layer formed of a conductive material. The electrode layer is applied with a DC bias voltage of a single polarity by a DC bias supply, and is also applied with an AC signal output from a signal source superimposed on the DC bias voltage. The pair of fixed electrodes have a plurality of holes of the same number at positions facing each other via the vibrating film, and an AC signal is applied between the conductive members of the pair of fixed electrodes by the signal source.

    摘要翻译: 超声波换能器包括:一对固定电极,包括导电部件; 具有导电层的振动膜; 以及保持该对固定电极和振动膜的构件。 振动膜由非导电体形成并具有由导电材料形成的电极层。 电极层通过直流偏置电源施加单极性的直流偏置电压,并且还施加从叠加在直流偏置电压上的信号源输出的交流信号。 一对固定电极在经由振动膜彼此面对的位置具有相同数量的多个孔,并且通过信号源在一对固定电极的导电构件之间施加AC信号。

    ELECTROSTATIC TRANSDUCER, ULTRASONIC SPEAKER, DRIVING CIRCUIT OF CAPACITIVE LOAD, METHOD OF SETTING CIRCUIT CONSTANT, DISPLAY DEVICE, AND DIRECTIONAL SOUND SYSTEM
    23.
    发明申请
    ELECTROSTATIC TRANSDUCER, ULTRASONIC SPEAKER, DRIVING CIRCUIT OF CAPACITIVE LOAD, METHOD OF SETTING CIRCUIT CONSTANT, DISPLAY DEVICE, AND DIRECTIONAL SOUND SYSTEM 失效
    静电传感器,超声波扬声器,电容负载驱动电路,设定电路常数的方法,显示装置和方向声系统

    公开(公告)号:US20070121970A1

    公开(公告)日:2007-05-31

    申请号:US11562900

    申请日:2006-11-22

    申请人: Shinichi Miyazaki

    发明人: Shinichi Miyazaki

    IPC分类号: H04R3/00

    摘要: An electrostatic transducer includes: a class-D power amplifier that amplifies an input signal; and a low pass filter that has a plurality of pairs of inductors and capacitors, is connected to an output side of the class-D power amplifier, and serves to eliminate switching carrier components included in an output of the class-D power amplifier. An electrostatic load capacitor of the electrostatic transducer serving as a driving load is disposed at a capacitor, which is closest to the output side of the class-D power amplifier, of circuit elements forming the low pass filter, an electrostatic coupling capacitor and an output transformer are interposed between the electrostatic load capacitor of the electrostatic transducer and an inductor closest to the output side of the class-D power amplifier of the low pass filter, and a damping resistor is connected in series to a primary coil of the output transformer.

    摘要翻译: 静电换能器包括:放大输入信号的D类功率放大器; 并且具有多对电感器和电容器的低通滤波器连接到D类功率放大器的输出侧,并且用于消除D类功率放大器的输出中包括的开关载波分量。 用作驱动负载的静电传感器的静电负载电容器设置在最靠近D类功率放大器的输出侧的电容器中,形成低通滤波器的电路元件,静电耦合电容器和输出 变压器插在静电变换器的静电负载电容器和最靠近低通滤波器的D类功率放大器的输出侧的电感器之间,并且阻尼电阻器串联连接到输出变压器的初级线圈。

    Projector
    25.
    发明申请
    Projector 有权
    投影机

    公开(公告)号:US20060033882A1

    公开(公告)日:2006-02-16

    申请号:US10916209

    申请日:2004-08-11

    IPC分类号: G03B31/00

    摘要: A projector including an ultrasonic speaker that includes an ultrasonic transducer capable of oscillating an acoustic signal in a wide frequency band and reproduces signal sound in the audio frequency band, and a projector main body that includes a projecting optical system that projects a video image on a projecting surface. The ultrasonic speaker and the projector main body are integrated with each other.

    摘要翻译: 一种包括超声波扬声器的投影仪,其包括能够振荡宽频带中的声信号并再现音频频带中的信号声音的超声波换能器,以及投影仪主体,其包括投影光学系统, 投影面。 超声波扬声器和投影仪主体彼此一体化。

    Low-power wireless diversity receiver with multiple receive paths
    26.
    发明申请
    Low-power wireless diversity receiver with multiple receive paths 有权
    具有多个接收路径的低功率无线分集接收机

    公开(公告)号:US20060009177A1

    公开(公告)日:2006-01-12

    申请号:US10993011

    申请日:2004-11-18

    IPC分类号: H04B7/08 H03D5/00

    CPC分类号: H04K3/224 H04B1/109 H04B7/082

    摘要: A low-power diversity receiver includes at least two receive paths, each of which is designated as a primary or secondary receive path. A primary receive path is compliant with system requirements (e.g., IS-98D requirements). A secondary receive path is not fully compliant with the system requirements and is designed for lower power, less area, and lower cost than the primary receive path. For a multi-antenna receiver, the two receive paths may be used to simultaneously process two received signals from two antennas. For a single-antenna receiver, either the primary or secondary receive path is selected, e.g., depending on whether or not large amplitude “jammers” are detected, to process a single input signal from one antenna. The receiver may include additional receive paths for additional frequency bands and/or GPS.

    摘要翻译: 低功率分集接收器包括至少两个接收路径,每个接收路径被指定为主要或次要接收路径。 主要接收路径符合系统要求(例如,IS-98D要求)。 次要接收路径不完全符合系统要求,并且设计为比主接收路径更低的功率,更少的面积和更低的成本。 对于多天线接收机,两个接收路径可以用于同时处理来自两个天线的两个接收信号。 对于单天线接收机,例如,取决于是否检测到大的振幅“干扰”,选择主要或次要接收路径来处理来自一个天线的单个输入信号。 接收机可以包括用于附加频带和/或GPS的附加接收路径。

    Method, apparatus, and program for processing stereo image
    27.
    发明申请
    Method, apparatus, and program for processing stereo image 有权
    用于处理立体图像的方法,装置和程序

    公开(公告)号:US20050008220A1

    公开(公告)日:2005-01-13

    申请号:US10769739

    申请日:2004-01-30

    申请人: Shinichi Miyazaki

    发明人: Shinichi Miyazaki

    摘要: A method for processing a stereo image is provided which includes the steps of setting a specified area of a base window with reference to a point for obtaining a corresponding point in the base image; setting a reference window having the same size as that of the base window in the reference image; evaluating the difference between the base window and the reference window while scanning the reference window along an epipolar line; determining the position of the reference window having the minimum difference as a stereo corresponding point; measuring parallax from the difference between the position of the base window and the position of the reference window; calculating the reliability of the corresponding point (parallax) by first reliability based on the sharpness of the peak of the evaluation-value distribution of the difference of patterns between the base window and the reference window and second reliability based on the shape of the peaks; and outputting the value of the reliability of the parallax together with information on the parallax.

    摘要翻译: 提供了一种用于处理立体图像的方法,其包括以下步骤:参考用于获得基本图像中的相应点的点来设置基本窗口的指定区域; 设置与参考图像中的基本窗口的大小相同的参考窗口; 在沿着对极线扫描参考窗口时,评估基本窗口和参考窗口之间的差异; 将具有最小差异的参考窗口的位置确定为立体对应点; 从基础窗口的位置与参考窗口的位置之间的差测量视差; 基于基本窗口和参考窗口之间的图案差异的评价值分布的峰值的锐度和基于峰值的形状的第二可靠度,通过第一可靠性来计算相应点(视差)的可靠性; 并输出视差可靠度的值以及关于视差的信息。

    Pneumatic tire
    28.
    发明授权
    Pneumatic tire 失效
    气动轮胎

    公开(公告)号:US06695026B2

    公开(公告)日:2004-02-24

    申请号:US09784042

    申请日:2001-02-16

    IPC分类号: B60C918

    摘要: A pneumatic tire comprises a tread reinforcing belt made of metallic cords, each of the metallic cords is made up of six to twelve metallic filaments whose diameter is not less than 0.15 mm but less than 0.25 mm, the six to twelve metallic filaments are grouped into a plurality of bunches each including two to four filaments, the filaments of each bunch are twisted together at a first twisting pitch, the bunches are twisted together into the cord at a final twist pitch Pc of from 10 to 40 mm, the first twisting pitch is more than the final twist pitch, and the bunches each include at least one waved filament which is two-dimensionally waved at wave pitches Pw in a range of from 5 to 30 times the diameter (d) of the filament and a wave height (h) in a range of from 0.2 to 3.0 times the diameter (d).

    摘要翻译: 一种充气轮胎包括由金属帘线制成的胎面加强带,每个金属帘线由直径不小于0.15mm但小于0.25mm的六至十二根金属丝构成,六至十二根金属丝被分组成 每束包括2至4个长丝的多个束,每束的长丝以第一扭转间距绞合在一起,所述束以10至40mm的最终捻距Pc扭绞在一起,第一捻距 大于最终扭曲节距,并且束束各自包括至少一个波浪长丝,其以波长Pw在波长的直径(d)的5至30倍的范围内二维波动,并且波高( h)在直径(d)的0.2至3.0倍的范围内。

    Sensorless motor driving apparatus
    29.
    发明授权
    Sensorless motor driving apparatus 有权
    无传感器电机驱动装置

    公开(公告)号:US06483266B2

    公开(公告)日:2002-11-19

    申请号:US09908433

    申请日:2001-07-18

    IPC分类号: H02K2300

    CPC分类号: H02P8/14 H02P6/182 H02P6/21

    摘要: When the brushless motor 1 at rest is started, phase excitation is performed twice such that different phases are excited. A commutation reference point is set at a position at which a rotor has stopped after the second-time excitation. A position detector outputs pulse signals in response to a movement of an object driven by the brushless motor 1. The pulse signals output from the position detector are monitored and commutation is controlled on the basis of the number of pulse edges of the pulse signals as counted starting from the commutation reference point. For example, the number of pulse edges output during a period starting from the commutation reference point and ending at a point of time at which commutation should be performed is measured in advance. When the number of pulse edges with reference to the commutation reference point becomes equal to the above predetermined number, it is determined that commutation timing has reached, and commutation is performed.

    摘要翻译: 当静止时的无刷马达1开始时,相位激励被执行两次,使得不同的相被激励。 在转子在第二次激励之后停止的位置处设置换向参考点。 位置检测器响应于由无刷电动机1驱动的物体的移动而输出脉冲信号。监视从位置检测器输出的脉冲信号,并根据计数的脉冲信号的脉冲边缘的数量来控制换向 从换向参考点开始。 例如,在从换向参考点开始并在应该进行换向的时间点结束的时段期间输出的脉冲边缘的数量被预先测量。 当相对于换向参考点的脉冲边缘数量等于上述预定数量时,确定已经达到换向定时并且执行换向。