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    • 2. 发明授权
    • Surface-mounted electromagnetic sound generator
    • 表面安装电磁声发生器
    • US06359541B1
    • 2002-03-19
    • US09439761
    • 1999-11-15
    • Keita Watanabe
    • Keita Watanabe
    • H01F700
    • H04R9/06
    • A surface-mounted electromagnetic sound generator includes a yoke accommodated inside a case, a coil attached to the yoke, a ring-shaped magnet placed about the coil, a vibration plate disposed to oppose the yoke and a plurality of surface-mounted electrodes. The underside of the magnet is provided with a plurality of recesses at symmetrical positions thereof, each recess extending through the magnet in tunnel-like fashion from the inner circumferential surface to the outer circumferential surface of the magnet. Terminals of the coil are connected to respective ones of the electrodes in respective ones of the recesses of the magnet. Thus the connections fall within the space occupied by the magnet.
    • 表面安装的电磁声发生器包括容纳在壳体内的磁轭,附接到磁轭的线圈,围绕线圈放置的环形磁体,与磁轭相对设置的振动板和多个表面安装电极。 磁体的下侧在其对称位置处设置有多个凹部,每个凹部从隧道状延伸穿过磁体,从磁体的内圆周表面到外圆周表面。 线圈的端子连接到磁体的各个凹部中的相应电极。 因此,连接落在磁体占据的空间内。
    • 3. 发明授权
    • Radiographic image detector and control method therefor
    • 射线照相图像检测器及其控制方法
    • US08637832B2
    • 2014-01-28
    • US13480136
    • 2012-05-24
    • Keita WatanabeTakeshi KuwabaraYasufumi OdaJun EnomotoTakeshi Koishi
    • Keita WatanabeTakeshi KuwabaraYasufumi OdaJun EnomotoTakeshi Koishi
    • G01T1/00
    • G01T1/247G01T1/208G01T1/24H04N5/32
    • A flat panel detector has an imaging area, in which pixels are arrayed in a matrix and signal lines for reading out electric signals from the pixels are provided, to detect an image of a subject from x-rays which are incident on the imaging area after penetrating the subject. Detective elements are arranged in the imaging area, to output electric signals corresponding to incident x-rays. Based on previously stored sensitivity data on the detective elements, high-sensitivity elements are selected from among the detective elements. The start of radiation and the end of radiation of x-rays toward the imaging area are detected by monitoring the electric signals from the selected high-sensitivity elements, to control operation of the imaging device on the basis of the detected start and end of radiation.
    • 平板检测器具有成像区域,其中像素被排列成矩阵,并且提供用于从像素读出电信号的信号线,以便在来自入射到成像区域的X射线之后的X射线上检测被摄体的图像 穿透主题。 检测元件布置在成像区域中,以输出对应于入射的X射线的电信号。 基于先前存储的检测元件的灵敏度数据,从检测元件中选择高灵敏度元素。 通过监测来自所选择的高灵敏度元件的电信号来检测X射线朝向成像区域的辐射开始和X射线的辐射结束,以根据检测到的辐射开始和结束来控制成像装置的操作 。
    • 5. 发明授权
    • Radiation image detecting device and method for detecting start of irradiation
    • 辐射图像检测装置及其检测方法
    • US08633447B2
    • 2014-01-21
    • US13361386
    • 2012-01-30
    • Keita Watanabe
    • Keita Watanabe
    • G01T1/24
    • H04N5/32H04N5/232H04N5/353H04N5/374
    • An FPD has plural pixels arranged in two dimensions. The pixels include a short pixel directly connected to a signal line, and a comparative pixel connected to another signal line through a TFT. In irradiation detecting operation, a control section monitors a voltage signal from the short pixel. When the voltage signal is a predetermined threshold value or more, the control section detects the start of X-ray irradiation, and provisionally starts charge accumulation operation. Then, the control section calculates the difference in the voltage signal between the short pixel and the comparative pixel. When this difference is another threshold value or more, the detection of the start of X-ray irradiation is judged to be valid. When the difference is less than the threshold value, the detection is judged to be misdetection caused by shock noise. The charge accumulation operation is aborted, and the irradiation detecting operation is restarted.
    • FPD具有排列成二维的多个像素。 像素包括直接连接到信号线的短像素,以及通过TFT连接到另一信号线的比较像素。 在照射检测操作中,控制部分监视来自短像素的电压信号。 当电压信号为预定阈值以上时,控制部检测X射线照射的开始,并暂时开始电荷累积动作。 然后,控制部分计算短像素和比较像素之间的电压信号的差。 当该差异为另一阈值以上时,判断为开始X射线照射的检测为有效。 当差小于阈值时,判断为由冲击噪声引起的误检。 电荷累积动作中止,照射检测动作重新开始。
    • 8. 发明申请
    • ELECTROACOUSTIC TRANSDUCER
    • 电动传感器
    • US20080063234A1
    • 2008-03-13
    • US11849810
    • 2007-09-04
    • Keita Watanabe
    • Keita Watanabe
    • H04R9/06
    • H04R9/063
    • An electroacoustic transducer includes a yoke (1) having an annular intermediate yoke portion (1a), an inner yoke portion (1b) and an outer yoke portion (1c), a permanent magnet (3) provided on the outer yoke portion so as to surround the inner yoke portion and forming a magnetic gap (G) between itself and the inner yoke portion (1b), a voice coil (6) inserted into the magnetic gap, and a diaphragm (4) supporting the voice coil. The diaphragm has an outer annular portion (4a) secured to the inner peripheral surface of the outer yoke portion (1c) and extending toward the inner yoke portion, an inner portion (4b) disposed to face the distal end opening (1e) of the inner yoke portion (1b), and a cylindrical portion (4c) connected between the inner portion and the outer annular portion. The inner portion (4b) of the diaphragm has a dome portion that is convex toward the distal end opening.
    • 电声换能器包括具有环形中间磁轭部分(1a),内磁轭部分(1b)和外磁轭部分(1c)的磁轭(1),设置在外磁轭部分上的永磁体 以包围内轭部并在其与内轭部分(1b)之间形成磁隙(G),插入到磁隙中的音圈(6)和支撑音圈的振膜(4) 。 隔膜具有固定到外磁轭部分(1c)的内周表面并向内磁轭部分延伸的外环形部分(4a),设置成面向远端开口(1)的内部部分(4b) e)和连接在内部部分和外部环形部分之间的圆柱形部分(4c)。 隔膜的内部部分(4b)具有朝向远端开口凸出的圆顶部分。