KR960001940Y1 - Voice controlled speaker micro-phone for wireless intercom - Google Patents

Abstract

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Description

Automatically chargeable wireless intercom voice control handset

1A to 1D are explanatory diagrams of a handset of a general wireless intercom.

2 is a block explanatory diagram of a circuit according to the present invention.

3 is a view showing an embodiment of a circuit according to the present invention.

4a to 4d are diagrams showing the voltage waveforms of each step when acted according to the present invention.

5 is an overall display of an embodiment according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Amplification Circuit 2: Integrating Circuit

3: waveform shaping circuit 4: transistor switch circuit

5: rectification circuit 7: transmission and reception control circuit

9: Speaker 81,82 capacitor microphone

The present invention relates to a voice controlled speaker microphone of a wireless intercom. In particular, a voice of a wireless intercom that provides power for self-sufficiency without needing to be powered from a main set or a battery replacement is required. It relates to a control handset.

The voice control system of a typical wireless intercom is a transceiver (or main set, 100, transceiver) of the wireless intercom, as shown in FIG. 1A, and a plug 201 and an outlet 101 of the transceiver 100 of the wireless intercom. Using a voice controlled handset 200 (VOX SP. & MIC) (in Figure 1a the input / output socket of the wireless intercom is an input / output socket 101 installed in the main set of wireless intercoms) and The design features, types and drawbacks of the voice control handset 200 (VOX SP. & MIC) of the voice control system of this type of wireless intercom are as follows.

In the first type of design, as shown in FIG. 1B, when the transceiver 100 of the wireless intercom does not supply the energy required by the voice control circuit of the voice control handset 200, the voice control handset ( 200 must be equipped with a battery to provide the battery with the energy required by the voice control circuit. However, these days, the battery can be used for only up to 130 hours, so it needs to be replaced at all times, which brings considerable inconvenience to the user.

In the second and third types of designs, as shown in Figs. 1C and 1D, the transceiver 100 of the wireless intercom has a built-in power supply for supplying the voice control circuit of the voice control handset 200. The input / output socket 101 is designed to receive the power supplied by the power in the transceiver 100 of the wireless intercom to a small pin or a large pin of the plug 201 of the voice control handset 200, respectively. In this situation, the design of the power supply of each maker (including the plug 201, the socket 101, and the power supply (not illustrated) is all different, so that the voice control handset 200 or the wireless intercom Both the transceiver 100 is not possible to use interchangeably with each other has given a great inconvenience to the user.

In the case of using the voice control handset of the general wireless intercom, the phone and the microphone 300 should be attached thereto, in particular, in order to prevent interference due to voice feedback during transmission and reception. (This is because the reception and transmission status of the sound control circuit cannot be controlled because the reception and transmission signals are not obtained.) However, the equipment is very complicated, which causes a great inconvenience to the user.

SUMMARY OF THE INVENTION An object of the present invention is to provide a voice control handset of a wireless intercom which can be automatically charged in view of the above-mentioned shortcomings of the voice control system of a general wireless intercom. It is to provide a voice control handset of a wireless intercom including a special voice control circuit that can be covered by the energy required for the voice control handset of the present invention just by using a). This eliminates the inconvenience of replacing the battery separately, and greatly improves the economic effect.

It is another object of the present invention to provide a voice control handset of a wireless intercom which does not need to supply the necessary energy to the voice control circuit in the voice control handset by providing a separate power source from the wireless intercom transceiver. No wireless intercom can be used interchangeably, as long as the socket size and plug specifications of the wireless intercom match.

Another object of the present invention is to obtain a reception and transmission signal, and to control the reception and transmission status of the circuit accordingly, wireless intercom which can receive and transmit directly by voice control handset without attaching a phone and microphone separately. By providing the voice control handset of the present invention, the overall cost can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1A to 1D show a voice control handset of a general wireless intercom. The situation and drawbacks of the configuration are as described above, and thus are omitted here.

2 is an overall block diagram of the present invention, and as can be seen from this figure, the present invention mainly consists of a first capacitor microphone rectifier circuit 5, a transmission / reception control circuit 7 and a voice output device 9, and the like. Among them, the first capacitor microphone 81 is coupled to the amplifying circuit, amplifies the output signal by the amplifying circuit 1 to an extent easy to integrate, and amplifies the audio signal output from the amplifying circuit 1 by the integrating circuit 2. After integrating with a high-low signal and output to the waveform shaping circuit 3, the microphone 81, the amplifying circuit 1, the integrating circuit 2, the waveform shaping circuit 3, and the transistor switch The circuit 4, the second capacitor microphone 82, and the waveform shaping circuit 3 strengthen the switch characteristics of the high and low signals, shape them into square waves, and then form the resistor R10 and the capacitor C5. Connected to the transistor switch circuit 4 via a switch circuit The output X of (4) is coupled to the second capacitor microphone 82 and the manual switch PTT, and the output of the integrating circuit 2 is also applied to the double voltage rectifying circuit 5, the output of which is transmitted and received Connected to the control circuit 7, the audio output 9 is coupled with the output of the rectifier circuit 5, and the second capacitor microphone 82 and the rectifier circuit 5 are also connected to the main set 6 of the wireless intercom. It is connected.

In the embodiment shown in FIG. 3, the amplifying circuit 1 has transistors Q7 and Q8 combined with capacitors C1, C2, C3 and resistors R1, R2, R17, R18, H19. The integrating circuit 2 is composed of a transistor Ql and Q2 combining resistors R3, R4, R5, R6, R7 and a capacitor C4 and at the same time has a switch S2. The booster circuit 3 mainly consists of transistors Q3 and Q4 and resistors R8 and R9, and the switch circuit 4 mainly consists of transistor Q5, resistor R20 and capacitor C6, and is rectified. The circuit 5 consists of a pair of diodes D1 and D2, and the transmit / receive control circuit 7 consists of a transistor Q6, resistors R11 and R12, and a capacitor C7. D3), thereby preventing backflow to transistor Q6.

As shown in FIG. 3, the voice control handset of the wireless intercom according to the present invention uses the first capacitor microphone 81 in the case of sign language and receives audio signals through the transistors Q7 and Q8 of the amplifying circuit 1. After amplification by 100 times (the waveform is as shown in FIG. 4A), it is transferred to the transistor Q1 of the integrating circuit 2. As shown in FIG. Transistor Q1 maintains its normal saturation state, and in aqueous state, obtains a voice signal from the collector (the waveform is shown in FIG. 4B), and transmits it to transistor Q2. C4) to obtain the high and low potentials (the waveforms are as shown in FIG. 4C), and then improve the high and low potential waveforms into square waves via the action of the waveform shaping circuit (3) as shown in d), thereby moving the transistor Q5 in the switch circuit 4 to achieve the purpose of hydration.

At this time, the second capacitor microphone 82 is connected in parallel with the resistor R16 and is connected to the microphone input terminal of the transceiver 6 of the wireless intercom. The bias voltage of the transceiver 6 flows through the second capacitor microphone 82, the parallel resistor R16, and the transistor Q5, is filtered through the capacitor C5, and then through the R10 battery B. Is charged to obtain a charging current 11 of 0.6 mA to 1.0 mA.

In the case of a talk, voice is made by using a coupling capacitor Cy connected to the output of the internal CTL amplifier of the main set 6 of the wireless intercom and a capacitor C8 connected in series with the voice output unit 9. Move the output unit (9). At the junction between coupling capacitor Cy and capacitor C8, the distribution voltage is obtained at one DC potential level, and the DC potential level is maintained by backing up to diodes D1 and D2 of rectifier circuit 5, and the resistor It is integrated to the capacitor C7 via R13, and then transmitted to the transistor Q6 of the transmission / reception control circuit 7 in order to turn off the voice control signal during transmission to prevent interference between transmission and reception. The base electrode of the transistor Q2 of (2) is controlled. This DC potential level is further filtered by the resistor R15 and the capacitor C5 via the diode D3 and charged to the battery B through the resistor R10. At this time, a charging current of 1 mA to 30 mA is obtained. In addition, the current limiting action of the resistors R14 and R15 prevents the rectifier 5 from affecting the sound quality received.

When the charging currents I1 and I2 are supplied to and used with the voice controlled handset of the present invention (operating current is 0.3 mA), the purpose of self-sufficiency is achieved, and as shown in FIG. 5, the transceiver 6 of the wireless intercom is shown. It is not necessary to provide power from the transceiver 6 of the wireless intercom separately, and the input / output socket 11 of the transceiver 6 of the wireless intercom can consider the output of energy. There is no need, and no special design is required, so that any wireless intercom can be used interchangeably as long as the socket specifications of the wireless intercom match the plug specifications.

As described above, the voice control handset of the wireless intercom according to the present invention has the effect that it can be self-sufficient without a separate power supply, and the effect is that the voice control system of the general wireless intercom applies power separately or always The defect that needs to be exchanged can be improved.

Claims (1)

A voice control handset and a transceiver (6), said voice control handset being connected to said transceiver (6) via a connector, said voice control handset comprising: a first microphone (81); A second microphone 82; An amplifying circuit (1) for amplifying the voice signal received by the first microphone (81) according to a predetermined gain; An integrating circuit (2) for generating a high low potential signal by integrating the signal output from the amplifying circuit (1); A waveform shaping circuit (3) for converting the high and low potential signals output from the integrating circuit (1) into square wave signals; A switch circuit (4) connected to the second microphone (82) for receiving a signal generated by the square wave signal of the waveform shaping circuit (3) via a resistor and a capacitor; A rectifier circuit (5) connected to the transceiver (6) for rectifying a signal output from the integrating circuit (2); A transmission / reception control circuit (7) for controlling the integration circuit (2) in accordance with the signal output from the rectification circuit (5) so that interference between transmission and reception does not occur; And charged by a bias voltage output from the microphone input terminal of the transceiver 6 during hydration, charged by a DC potential level obtained from an internal amplifier output terminal of the transceiver 6, and charging the charging current to the voice controlled handset. Voice control handset in a wireless intercom characterized in that it comprises a charging battery (B) for supplying.