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JPS6035655

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DESCRIPTION JPS6035655
[0001]
Brief description of the drawings
[0002]
FIG. 1 is a block diagram showing the principle of the automatic control of transmission and
reception according to the present invention, FIG. 2 and FIG. 3 are block diagrams showing the
other principle, and FIGS. 4 is a perspective view showing two sides of the specific configuration
of the automatic control device, FIG. 5 is a sectional view of the ear microphone used in FIG. 4,
and FIG. FIG. In the figure, 1 is a vibration pickup type ear microphone, IA is a control vibration
pickup type ear microphone, 2 is a transmission main circuit, 3 and 8 are amplifier, 4.4 A is a
transmission / reception switching circuit, 5 is a low pass or band pass filter , 6 is an automatic
switching controller, 7 is a receiver main circuit, and 10 is a gutter or bone conduction type
speaker.
04-05-2019
1
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