Exercise measuring instrument
    11.
    发明授权
    Exercise measuring instrument 失效
    运动测量仪器

    公开(公告)号:US4962469A

    公开(公告)日:1990-10-09

    申请号:US339179

    申请日:1989-04-14

    摘要: An exercise measuring instrument according to the present invention employs an acceleration sensor which comprises a piezoelectric piece having a pair of piezoelectric elements stuck to each other. An output waveform of the acceleration sensor is supplied to an amplifier, gain of which is changed in accordance with an exercise mode selected out of a walking mode, an exercise-walking mode and a jogging mode, and thereby an output level of the amplifier is kept at somewhat an equal voltage level, although the voltage level of the output waveform of the acceleration sensor is different between the exercise modes. This improvement allows an accurate measurement of exercise.

    摘要翻译: 根据本发明的运动测量仪器采用加速度传感器,其包括具有彼此粘附的一对压电元件的压电片。 加速度传感器的输出波形被提供给放大器,其增益根据从步行模式,运动步行模式和点动模式中选择的运动模式而改变,从而放大器的输出电平为 保持在相当的电压水平,尽管加速度传感器的输出波形的电压水平在运动模式之间是不同的。 这种改进可以准确测量运动。

    Liquid cooling type uniform magnetic field coil
    12.
    发明授权
    Liquid cooling type uniform magnetic field coil 失效
    液体冷却型均匀磁场线圈

    公开(公告)号:US4817706A

    公开(公告)日:1989-04-04

    申请号:US1246

    申请日:1987-01-07

    CPC分类号: G01R33/3804 H01F27/10

    摘要: A coil designed for providing a highly uniform magnetic field suitable for use in nuclear magnetic resonance computer-aided tomography is provided with preheating apparatus which uses forced circulation of warmed liquid along the path normally circulated with the cooling liquid whereby there are simulated the normal operating coil heating conditions even when the coil is not operating so that the start-up stabilization time can be shortened.

    摘要翻译: 设计用于提供适用于核磁共振计算机辅助断层摄影的高度均匀磁场的线圈提供有预热装置,其使用沿着通常与冷却液循环的路径强制循环加热的液体,由此模拟正常操作线圈 即使线圈不工作,从而可以缩短启动稳定时间。

    Television video signal A/D converter apparatus
    13.
    发明授权
    Television video signal A/D converter apparatus 失效
    电视视频信号A / D转换装置

    公开(公告)号:US4642693A

    公开(公告)日:1987-02-10

    申请号:US733584

    申请日:1985-05-13

    CPC分类号: H04N3/127 H03M1/362

    摘要: A television video signal A/D converter apparatus in a liquid crystal television receiver has an A/D converter for A/D converting a television video signal. Upper and lower reference potentials for determining an operating voltage amplitude are supplied to the A/D converter from a reference potential generator. The upper and lower reference potentials are divided at a given ratio by a resistor so as to fix an average potential of the television video signal at a constant value using the potential at the dividing point as a bias potential, and thereafter the television video signal is supplied to the A/D converter.

    摘要翻译: 液晶电视接收机中的电视视频信号A / D转换装置具有用于A / D转换电视视频信号的A / D转换器。 用于确定工作电压幅度的上限和下限参考电位从参考电位发生器提供给A / D转换器。 上下参考电位通过电阻器以给定的比例被分频,以便将电视视频信号的平均电位用分压点的电位作为偏置电位固定在一个恒定值,之后电视视频信号是 提供给A / D转换器。