KR100814080B1 - Audio level control apparatus for half duplex phone device - Google Patents

Abstract

The present invention relates to a voice input and output level control apparatus of a one-party telephone apparatus, wherein the level of the input and output volume and the volume of the telephone signal can be adjusted without replacing the internal elements of the one-call circuit. By implementing each chord to minimize the influence on the other party to solve the inconvenience of having to produce or follow-up management of the one-way circuit of the one-way telephone device by the manufacturer or model of the interlocking device.

Half Duplex, Voice I / O Level Control

Description

Audio level control apparatus for half duplex phone device

1 is a schematic diagram of a typical one-way telephone apparatus;

2 is a block diagram according to an embodiment of a voice input and output level control apparatus of a one-way telephone apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: main device 20: interlocking device

30: one-way telephone apparatus 31: the first connection portion

32: transformer 33: one-way circuit

34: second connection portion 40: voice input and output level control device

41: handset volume amplifier 42: handset volume attenuator

43: song volume attenuation unit 44: sign language volume amplification feedback unit

45: attenuation control unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voice input / output level control apparatus for a one-way telephone apparatus, and more particularly, to a technique for adjusting the level of input / output voice of a half duplex telephone apparatus having a voice call function with another apparatus.

1 is a schematic diagram of a typical one-way telephone apparatus.

When connecting the interlocking device 20 such as a bathroom phone and a kitchen phone having a voice call function to the main device 10 such as an intercom, a home automation (HA) control device, the one-way call in the main device and the interlocking period ( In order to implement Half Duplex, a one-telephone apparatus 30 having one-way circuit such as Motorola's MC34118 is implemented.

However, the interlock device 20 interlocked with the main device 10 has a significant variation in the input / output volume for each model of the company, and thus, when the main device 10 and the interlock device 20 are installed in each home, There was a problem that the value of the internal element of the one-call circuit of the one-call telephone device 30 provided between the main device 10 and the companion device 20 has to be readjusted according to the input / output volume degree. For example, when the Motorola MC34118 was used as the one-call circuit of the one-way telephone device 30, the internal resistance controlling the volume and the volume of the call had to be replaced to increase or decrease the resistance.

However, when adjusting the internal device value of the one-call circuit of the one-call telephone device 30, the volume of the call is closely related to the amount of the call, and when the volume is raised, the volume of the call is affected due to the influence of the volume of the call. When the handset volume is increased, the handset volume level is influenced, and the handset volume output through the speaker is inputted through the microphone again, which means that a howling phenomenon occurs.

Accordingly, the present inventors can adjust the level of the input / output sound volume and the sound volume without replacing the internal element of the one-call circuit of the one-way telephone apparatus 30, while minimizing the influence of each of the sound and the sound on the other party. A study on the voice input and output level control device of a one-way telephone device was conducted.

The present invention has been invented under the above-mentioned aspect, and the one-way telephone apparatus which can control the level of the talk volume and the talk volume to be input and output without replacing the internal elements, and minimizes the influence of each of the talk and the dial tone on the other party. It is an object of the present invention to provide a voice input and output level control apparatus.

According to an aspect of the present invention for achieving the above object, the voice input and output level control apparatus of a one-way telephone apparatus according to the present invention is a handset to amplify the volume of the signal received from the interlocking device and the volume of the telephone call output to the interlocking device. A volume amplification unit, a handset volume attenuator for attenuating the output volume amplified and output by the handset volume amplification unit to a set attenuation level level, and outputting the signal to a one-telephone device; and the call volume output from the one-telephone device. Attenuates to the level of the set attenuation level and outputs to the handset volume amplifying unit amplifying a handset volume output from the one-telephone telephone apparatus and outputting the amplified signal to the main device, but amplifying the amplified signal. It includes a sign language volume amplification feedback unit for limiting the volume fluctuation output to the main device It is characterized by.

Therefore, in the voice input / output level control apparatus of the one-party telephone apparatus according to the present invention, the level of the input and output volume and the volume of the telephone signal can be adjusted without replacing the internal elements of the one-call circuit. It is possible to minimize the influence of each of the signs on the other party.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce the present invention.

Figure 2 is a block diagram according to an embodiment of a voice input and output level control apparatus of a one-way telephone apparatus according to the present invention. As shown in the figure, the one-way telephone device 30 for realizing a half-duplex is connected between the main device 10 and the companion device 20, and the one-telephone device 30 is connected to one side. A voice input / output level control device 40 is connected to adjust the level of the talk volume and the talk volume to be input and output without replacing the internal circuit elements, and at the same time, minimize the influence of each of the talk and talk sounds to the other party.

The general call phone device 30 transmits and receives a first connection unit 31 for connecting the interworking device 20 and the one-way phone device 30, and the interworking device 20 and the one-call phone device 30. Transformer 32 for protecting the one-way telephone device 30 by transforming the signal to be one, and one-way circuit 33 for processing the half duplex between the main device 10 and the interlocking device 20. And a second connection part 34 for connecting the main device 10 and the general telephone device 30. At this time, since the one-call circuit 33 is a conventional circuit such as the MC34118 of Motorola (Motorola), a detailed description thereof will be omitted. Meanwhile, the main device 10, the general call phone device 30, and the voice input / output level control device 40 may be implemented as one device or may be separated and implemented as multiple devices.

Specifically, the voice input / output level control device 40 of the one-way telephone apparatus according to the present invention includes a handset volume amplifier 41, a handset volume attenuator 42, a handset volume attenuator 43, and a sign language. It comprises a volume amplification feedback section (44).

The handset volume amplifier 41 amplifies the handset volume inputted from the companion device 20 and the handset volume outputted from the companion device 20. As shown in FIG. 2, the handset volume amplifier 41 includes at least one sign language volume amplifying OP amplifier U1A and U1B for amplifying a sign language volume input from the companion device 20. And at least one OP amplifier U1C (U2A) for amplifying the talk volume outputted to (20), wherein the signal is transmitted and received between the one-telephone apparatus 30 and the companion device 20. The first terminal of the transformer (T1) 32, which is installed to protect the one-way telephone apparatus, by connecting an input terminal of the handset volume amplifier OP1 U1A and an output terminal of the handset volume amplifier OP1 U1C. And, the other terminal of the primary side of the transformer (T1) is implemented by feedback to the handset volume amplifier 41.

Since the sign language volume inputted from the companion device 20 is lost while passing through the transformer (T1) 32, the sign language volume is amplified and compensated through a sign language volume amplifying OP amplifier (U1A) (U1B). The song volume passed through the song volume attenuation unit 43 is amplified by the song volume amplification OP amplifier (U1C) (U2A) and output to the companion device 20. At this time, the amount of the song volume is fed back to the receiver side. In order to cancel the feedback, the other terminal of the transformer (T1) 32 is fed back to minimize the amount.

The sign language volume attenuator 42 attenuates the sign language volume amplified and output by the handset volume amplifier 41 to a set attenuation level and outputs the signal to the one-call telephone apparatus 30. As shown in Fig. 2, the hydration volume attenuation section 42 includes a plurality of switching transistors Q1, Q2, Q3 and Q4, each emitter-collector connected to a neighboring switching transistor. A plurality of distribution resistors R3, R4, R5, and R6 connected between the emitters and the collectors of the transistors Q1, Q2, Q3, and Q4, and connected in series with each other, may be implemented. Accordingly, the attenuation volume is attenuated by determining a voltage level applied according to a resistance value which is differently distributed depending on whether the switching transistors Q1, Q2, Q3, and Q4 are turned on or off. The level is determined.

The call volume attenuation unit 43 attenuates the call volume output from the one-way telephone apparatus 30 to a level of a set attenuation level and outputs the same to the handset volume amplifier 41. As shown in Fig. 2, the talk volume reduction section 43 includes a plurality of transistors Q5, Q6, Q7 and Q8, each emitter-connected with neighboring switching transistors, and the respective switching transistors. A plurality of distribution resistors R25, R26, R27, and R28 connected to both ends of the emitter and the collector of Q5, Q6, Q7, and Q8 are connected in series. Therefore, attenuation of the volume of the song is determined by determining a voltage level applied according to a resistance value that is differently distributed depending on whether the switching transistors Q5, Q6, Q7, and Q8 are turned on or off. The level is determined.

The sign language volume amplifying feedback unit 44 amplifies the sign language volume output from the one-telephone telephone device 30 and outputs the signal to the main device 10, and feeds back the amplified signal to the main device 10. Limit the fluctuation of the volume output. As shown in FIG. 2, the sign language volume amplifying feedback section 44 includes an amplifying transistor Q9 for amplifying the sign language volume output from the one-telephone telephone device 30 and outputting the amplified volume to the main device 10. A feedback line amplified by the amplifying transistor Q9 and output to the main device 10 may be implemented.

Looking at the operation effect of the present invention configured as described above, the sign language volume input from the microphone (not shown) of the companion device 20 is amplified and output by the handset volume amplifier 41, the sign language volume When the attenuation volume is attenuated to a set attenuation level level through the attenuation section 42 and outputted to the one call telephone device 30, the one call telephone device 30 amplifies it through the sign language volume amplifying feedback unit 44. By outputting to the main apparatus 10 and outputting through the speaker of the main apparatus 10, the level of a sign language volume is adjusted, without replacing the internal element of the one-call circuit 33 of the one-call telephone apparatus 30. FIG.

At this time, the feedback signal amplified and output by the sign language volume amplifying feedback section 44 is fed back and the compensation is processed using the signal to limit the volume fluctuations output to the main device 10, thereby making Minimize each of the signs that affect the other party. Since the above-mentioned feedback compensation technique is a conventional technique already known and implemented variously before this application, a detailed description thereof will be omitted.

On the other hand, the call volume input from the microphone (not shown in the drawing) of the main apparatus 10 and output to the one-telephone apparatus 30 is attenuated to a level of the attenuation level set by the call volume reduction unit 43, thereby transmitting the call. One-way call is outputted to the handset volume amplifier 41, amplified by the handset volume amplifier 41, and outputted to the companion device 20, and output through a speaker (not shown) of the companion device 20. The level of the talk volume is adjusted without replacing the internal element of the one-call circuit 33 of the telephone apparatus 30. At this time, the signal output to the companion device 20 is fed back (Feedback) to minimize the influence of each of the call sound and the sign language to the other party.

Therefore, the present invention can be adjusted by the level of the input and output volume and the volume of the talk volume without having to replace the internal element of the one-call circuit of the one-telephone device, and at the same time, each of the call and the sound to affect the other party Can be minimized.

On the other hand, according to an additional aspect of the present invention, the voice input and output level control device 40 of the one-telephone device may further include an attenuation control unit 45. The attenuation control unit 45 sets the handset volume reduction level and the handset volume reduction level, respectively, and the attenuation level setting signal by a mechanical switch operation such as a dip switch as shown in FIG. 42) and the attenuation volume attenuation section 43, and may be implemented to output the attenuation level setting signal by software operation to the sign language volume attenuation section 42 and the talk volume reduction section 43, although not shown in the drawing. It can also be implemented.

Therefore, the user can set the attenuation level of the talk volume or the talk volume by a simple mechanical switch operation or software operation, so that the level of the talk volume and the talk volume can be input and output without replacing the elements of the one-call circuit of the one-party telephone apparatus. It can be adjusted.

As described above, in the voice input / output level control apparatus of the one-call telephone apparatus according to the present invention, the level of the input / output call volume and the call volume can be adjusted without replacing the internal elements of the one-call circuit. Since it is possible to minimize the influence of each of the chord and the sign language on the other party, it is possible to solve the inconvenience of having to produce the one-way circuit of the one-way telephone apparatus by the manufacturer or model of the interlocking device or to manage after the call. It has a useful effect of preventing improvement and economic loss.

While the invention has been described with reference to the preferred embodiments, which are referred to by the accompanying drawings, it is apparent that various modifications are possible without departing from the scope of the invention within the scope covered by the following claims from this description. .

Claims (8)

A handset volume amplifier for amplifying a sign language volume input from a companion device and a talk volume output from the companion device; A handset volume attenuator for attenuating the handset volume amplified and output by the handset volume amplifier to a set attenuation level and outputting the signal to a one-way telephone apparatus; A call volume reduction unit configured to attenuate the call volume output from the one-way telephone apparatus to a level of a set attenuation level and output the same to the handset volume amplifier; A sign language volume amplifying unit configured to amplify a sign language volume outputted from the one-call telephone apparatus and output the amplified signal to a main apparatus, and feed back the amplified signal to limit the volume variation output to the main apparatus; An audio input / output level control device for a one-way telephone apparatus, characterized in that it comprises a. The method of claim 1, The voice input / output level control device of the one-call telephone apparatus is: An attenuation controller configured to set the received volume reduction level and the talk volume reduction level, respectively; Voice input and output level control device of a one-way telephone apparatus further comprising. The method of claim 2, The attenuation control unit: An audio input / output level control device for a one-telephone apparatus, characterized by outputting attenuation level setting signal by a mechanical switch operation to the handset volume reduction unit and the call volume reduction unit. The method of claim 2, The attenuation control unit: And outputting the attenuation level setting signal by software operation to the handset volume reduction unit and the call volume reduction unit. The method according to any one of claims 1 to 4, The handset volume amplifier: At least one OP volume amplifier for amplifying a sign language volume input from a companion device; An at least one OP volume amplifier for amplifying a talk volume output to the companion device; Including, A transformer primary side terminal is provided to transform a signal transmitted / received during the interworking period with the one-telephone device to provide an input terminal of the handset amplification volume amplifier and an output terminal of the tone volume amplification OP amplifier. And the other terminal of the primary side of the transformer is fed back to a handset volume amplifier. The method according to any one of claims 1 to 4, The sign language volume reduction unit: A plurality of switching transistors each emitter-collector connected to a neighboring switching transistor; A plurality of distribution resistors respectively connected between emitters and collectors of the plurality of switching transistors and connected in series with each other; Including, The voice level of the one-telephone apparatus is determined by the voltage level applied according to the resistance value which is differently distributed depending on whether the switching transistors are on or off. I / O level control device. The method according to any one of claims 1 to 4, The song volume reduction unit: A plurality of transistors each emitter-collector connected to a neighboring switching transistor; A plurality of distribution resistors respectively connected to emitters and collectors of the plurality of switching transistors and connected in series with each other; Including, The attenuation level of the talk volume is determined by determining the applied voltage level according to the resistance value which is differently distributed depending on whether the switching transistors are on or off. I / O level control device. The method according to any one of claims 1 to 4, The sign language volume amplification feedback unit: An amplifying transistor for amplifying a sign language volume outputted from said one call telephone apparatus and outputting it to a main apparatus; A feedback line amplified by the amplifying transistor to feed back a signal output to the main device to the one-telephone telephone device; Voice input and output level control device of a one-way telephone apparatus comprising a.

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