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    • 60. 发明授权
    • Stylus for reproducing capacitive videodisc
    • 用于再现电容式视频盘的触控笔
    • US4199782A
    • 1980-04-22
    • US852366
    • 1977-11-16
    • Yoshiyo WadaKunio GotoHisao Kinjo
    • Yoshiyo WadaKunio GotoHisao Kinjo
    • G11B3/44G11B3/46G11B9/07H04R9/12H04N5/80
    • G11B9/075G11B3/44G11B3/46H04R9/12
    • A reproducing stylus traces a track of a recording medium, in which track an information signal is recorded as variations of geometrical shape, and reproduces as variations in capacitance the information signal thus recorded. The reproducing stylus comprises a reproducing stylus main structure having a tip part with a flat sliding contact face for slidingly contacting at least one track of the recording medium at a time, and an electrode secured to the reproducing stylus main structure at the tip part thereof and adapted to trace one track and reproduce the information signal as the variations in capacitance in accordance with the variations in geometrical shape. The electrode has over a specific distance over the tip part of the stylus main structure from the extreme tip thereof, a width in the width direction of the track which is less than the width of the track. The extreme tip of the electrode has a flat or linear tip end contacting the track.
    • 再现触笔跟踪记录介质的轨道,在该轨道中,信息信号被记录为几何形状的变化,并且作为如此记录的信息信号的电容变化再现。 再现触针包括具有具有平滑的滑动接触面的顶端部分的再现触笔主结构,用于一次滑动地接触记录介质的至少一个轨道,以及在其尖端部分处固定到再现触针主结构的电极, 适于跟踪一个轨道并根据几何形状的变化再现信息信号作为电容的变化。 电极从其尖端超过触针主结构的尖端部分的特定距离,轨道的宽度方向上的宽度小于轨道的宽度。 电极的尖端具有接触轨道的平坦或线性的尖端。