JP2000078679

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DESCRIPTION JP2000078679
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
wireless microphone device, and more particularly, to on / off control of a power supply and an
audio signal output by a control signal from a detection circuit detecting contact of a human
body built in the device. Wireless microphone device.
[0002]
2. Description of the Related Art In a conventional wireless microphone device, as shown in FIG.
2, a mechanical switch 103 is provided on the grip to switch on / off the power supply or the
audio signal output, and the manual switching is performed. Therefore, unless the switch unit
103 is turned off manually, power is supplied to the microphone circuit 4A and the wireless
transmission circuit 4B of the microphone audio signal generation unit 4 and signals to the host
system 6 even when not in use. Will be output, consuming unnecessary power.
[0003]
As described above, the conventional wireless microphone device operates on / off of the power
source and the audio signal output by means of a mechanical switch. There is a problem that the
power is turned on even when unnecessary due to forgetting to turn off, and an audio signal is
output, and there is a problem that recharging and replacement of the power supply of the
device are frequently required.
[0004]
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SUMMARY OF THE INVENTION It is an object of the present invention to provide a wireless
microphone device which stops the sound signal to the host system and the power supply in
response to the touch of the human body.
[0005]
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a wireless
microphone device according to the present invention comprises: a main body; and a contact
portion provided on the surface of the main body for detecting contact of a human body; A
detection unit for detecting an electrical variation caused by contact / non-contact with the
contact portion and sending out an on / off control signal of the power source and the audio
signal output, and receiving the on / off control signal from the detection unit Power supply and
switch unit for switching on / off of audio signal output, microphone audio signal generation unit
operated by the power supply supplied by switching on the switch unit, and supply to the
microphone audio signal generation unit and the detection unit And a power supply unit for
generating the above-mentioned power supply.
[0006]
DETAILED DESCRIPTION OF THE INVENTION A wireless microphone device according to an
embodiment of the present invention will now be described with reference to the drawings.
[0007]
FIG. 1 is a block diagram (A) of a wireless microphone device according to an embodiment of the
present invention, a diagram of a detector configuration (B), and a variation curve diagram (C) of
a reference voltage due to human contact.
[0008]
As shown in FIG. 1A, a wireless microphone device according to an embodiment of the present
invention includes a main body, a contact portion 1 provided on the surface of the main body to
detect contact with a human body, and A detection unit 2 that detects an electrical variation
caused by contact / non-contact with the contact unit 1 and sends out an on / off control signal
of a power source and an audio signal output, and receives the on / off control signal from the
detection unit 2 Switch unit 3 for turning on / off the power supply and audio signal output, and
microphone transmission that operates with the power supplied by turning on the switch unit 3
and sends an audio signal to the microphone circuit 4A and the host system 6 A microphone
sound signal generation unit 4 having a circuit 4B, and a power supply generating power
supplied to the microphone sound signal generation unit 4 and the detection unit 2 Constituted
by the part 5.
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[0009]
The operation of the wireless microphone device according to an embodiment of the present
invention will now be described with reference to the drawings.
[0010]
In the operation of the wireless microphone device according to the embodiment of the present
invention, as shown in FIG. 1, the hand grip portion or the like is provided with a conductive
contact portion 1 to detect whether or not the human body is in contact. In addition, as shown in
FIG. 1B, the bias voltage from the reference voltage setting circuit 2A is applied to the signal line
of the contact portion 1 to detect the fluctuation of the bias level due to the contact with the
contact portion 1, The signal of the contact portion 1 is detected by the detection circuit 2B,
considering it as a power generation body or virtual earth, and as shown in FIG. 1C, when the
amount of change fluctuates, a predetermined level on an arbitrary time axis (dt) When (dv) is
exceeded, the on / off control signal is set to on.
[0011]
In response to the control signal, the switch unit 3 transmits power from the power supply unit 5
to the microphone audio signal generating unit 4 or sends out an audio signal from the
microphone audio signal generating unit 4 to the host system 6. And the microphone audio
signal generation unit 4 formed by the wireless transmission circuit 4B urges start / stop of the
operation by power supply from the switch unit 3, and the audio signal sent from the
microphone audio signal generation unit 4 is set by the switch unit 3 To the host system 6.
[0012]
As described above, according to the wireless microphone device of the present invention, the
user can stop the audio signal to the host system and the power supply according to the contact
of the human body. There is an effect that power source and audio signal output can be turned
on / off automatically without operating the switch manually.
[0013]
Brief description of the drawings
[0014]
1 is a block diagram (A) of the wireless microphone device according to an embodiment of the
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present invention, a configuration diagram of the detection unit (B), and a variation curve
diagram (C) of a reference voltage due to human contact.
[0015]
2 is a block diagram of a conventional wireless microphone device.
[0016]
Explanation of sign
[0017]
DESCRIPTION OF SYMBOLS 1 contact part 2 detection part 3 switch part 4 microphone audio
signal generation part 5 power supply part 6 microphone audio signal generation part (host
system) 4A microphone audio signal generation part (microphone circuit) 4B microphone audio
signal generation part (microphone transmission circuit)
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