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    • 4. 发明授权
    • Communication device for transmitting audio information to a user
    • 用于向用户发送音频信息的通信设备
    • US5337364A
    • 1994-08-09
    • US618885
    • 1990-11-28
    • Frank Fitch
    • Frank Fitch
    • A61F11/04G09B21/00H04R11/00H04R25/00
    • G09B21/009A61F11/04H04R11/00H04R2460/13
    • A communication device for transmitting audio information includes a compact casing which houses processing circuitry. The processing circuitry converts input audio signals into transducer driving signals. A miniaturized microphone is mounted in the casing for receiving the input audio signals. The input audio signals are then amplified and filtered to appropriate signal levels by the processing circuitry. Once the input audio signals have been processed in this manner they are applied to a driver which outputs transducer driving signals analogous to the input audio signals. The transducer driving signals are received by a transducer assembly worn by a user and energize a pair of coils located on opposite sides of an armature forming part of the transducer assembly. The electromagnetic forces generated by the coils when energized cause the armature to move. Movement of the armature in turn drives a plunger so that the plunger moves in a vibrational pattern analogous to the input audio signals. The plunger contacts the skin of the user so that the vibrational pattern is received by cutaneous nerve receptors on the user's body or by the user's ears via bone conduction. This vibrational information is then transmitted to the user's brain for processing. A pair of springs are located on opposite sides of the armature and bias the armature and plunger so that they move to a datum in the absence of driving signals. The spring also oppose movement of the armature and plunger when driven by the coils.
    • 用于传输音频信息的通信设备包括容纳处理电路的小型外壳。 处理电路将输入音频信号转换成传感器驱动信号。 小型麦克风安装在壳体中用于接收输入音频信号。 然后,输入音频信号被处理电路放大并过滤到适当的信号电平。 一旦以这种方式处理了输入音频信号,它们被应用于输出类似于输入音频信号的换能器驱动信号的驱动器。 传感器驱动信号由用户佩戴的换能器组件接收,并激励位于形成换能器组件的一部分的电枢的相对侧上的一对线圈。 线圈在通电时产生的电磁力使电枢移动。 电枢的移动又驱动柱塞,使得柱塞以类似于输入音频信号的振动模式移动。 柱塞接触使用者的皮肤,使得振动模式由用户身体上的皮肤神经受体或通过骨传导的用户的耳朵接收。 然后将该振动信息发送给用户的大脑进行处理。 一对弹簧位于电枢的相对两侧,并且偏置电枢和柱塞,使得它们在没有驱动信号的情况下移动到基准面。 当线圈驱动时,弹簧也会反对电枢和柱塞的移动。