KR20030037946A - Broadcast system using a key phone system - Google Patents

Abstract

PURPOSE: A broadcasting system apparatus using a key phone system is provided to control a broadcast equipment by simply adding several circuit devices. CONSTITUTION: A key phone system(100) includes plural external phones(11,12) and plural key phones and internal phones(21,22) connected to a key phone main device(10). The key phone main device(10) includes an office line card(31) connected to the external phones(11,12) and an extension card(32) connected to the plural key phones and internal phones(21,22). A broadcast system includes a broadcast equipment(50) and plural speakers(61-64) connected to the broadcasting equipment. The broadcast equipment(50) includes amplifiers(51-55) and group selectors(71-74) for connecting the amplifiers(51-55) and speakers(61-64). An audio channel conversion unit(300) includes a display unit(70) for sensing a signal applied to a controller(80) and displaying a broadcast center, the controller(80) for driving a relay, and a voice unit(90) for applying an output of an audio output terminal of a broadcasting function card(32') to a mixer of the broadcast equipment.

Description

Broadcasting system device using key phone system {BROADCAST SYSTEM USING A KEY PHONE SYSTEM}

The present invention relates to a broadcasting system apparatus using a key phone system, and more particularly, to a handset of a key phone or telephone connected to an existing main device, and to press a shortcut button to be connected to a broadcasting system through a telephone line by a speaker of a corresponding place. It is easy to apply to small broadcasting system that makes it possible to perform desired broadcasting more easily without having professional knowledge.

In the case of a small broadcasting system, for example, when using a large broadcasting system such as a parking lot or a department store, the system may be operated by a separate broadcasting expert, but in the case of a small workplace broadcasting or a school broadcasting, a separate operator may be used. In this case, he was in charge of broadcasting equipment separately from his own duties.

In this case, when the job is held separately from its own work, a situation arises in which it is impossible to broadcast the work. For example, in the case of the school system, if the teacher who is in charge of the broadcasting operation enters the class, the other person cannot handle the broadcasting equipment and thus cannot broadcast.

Especially in the case of a broadcasting system, there are many operating devices for amplifiers and microphones, and a number of operation switches for selecting a desired broadcasting location. Therefore, the characteristics of each equipment and the location of the broadcasting location must be known accurately. .

In addition, in order to solve the above disadvantages, a method of selecting a desired broadcasting and broadcasting place using a control device that can control it between the broadcasting system and the telephone line can be considered, but in such a case, a central processing unit is separately installed. Since the control device must be configured using the circuit, the cost is increased, which is a problem when applied to a small broadcasting system.

The present invention is to solve this problem,

An object of the present invention is to provide a broadcast system apparatus using a key phone system that can control the broadcast equipment through the key phone system by additionally configuring only a few circuit elements while using the existing key phone system as it is.

Another object is to provide a broadcast system apparatus using a broadcast keyphone system that can minimize costs by additionally configuring several circuit elements while using the existing keyphone system as it is to control broadcast equipment.

Another object is to provide a broadcasting system apparatus using a key phone system that can use some functions of the key phone for a broadcasting system while still using the functions of the key phone.

1 is an overall circuit diagram showing a broadcasting system apparatus using a key phone system of the present invention;

2 is a detailed embodiment circuit diagram of an audio channel switching unit in the broadcasting system apparatus of the present invention.

Description of the main parts of the drawing

11, 12: external telephone 21, 22: key phone and internal telephone

10: key device 31: CO line card

32: extension card 32 ': broadcast function card

50: broadcasting equipment 51, 52, 53, ..: amplifier

61, 62, 63, ..: Speakers 71,72,73, ...: Group selector

70: display unit 80: control unit

90: voice part 100: key phone system

200: broadcasting system 300: audio channel switching unit

AUX: Audio output terminal MIX: Mixer terminal

MI, M2, ..: Relay K1, K2, ..: Relay contact

LED1, LED2, ...: light emitting diodes R1, R2, ...: resistance

C1: condenser J9, J10: jack

This object is connected to an external telephone, a key phone and an internal telephone, and a key phone system comprising a key phone main device equipped with a trunk line card and an extension card therein; A broadcasting system comprising a group selector for connecting an amplifier for each location and a speaker for each location, and a speaker for connecting with a group selector of the broadcasting equipment, the broadcasting system comprising: a broadcasting point for broadcasting between the keyphone main device and the broadcasting equipment; An audio channel switching unit including a display unit, a control unit for driving a relay of a desired broadcasting location according to the output of the extension card, and an audio unit for outputting a broadcast signal applied to the extension card and outputting the broadcast signal to the mix (MIX) of the broadcasting equipment. Can be achieved.

Also, a part of the extension card of the key phone main device is used as a broadcasting function card, and the audio portion of the audio card switching unit is configured to output the audio output (AUX) of the broadcasting card card to the mix (MIX) of the broadcasting equipment. It features.

The controller may be configured to use a part of the extension card as a broadcasting function card, and output the broadcasting function card to control relay coils and relay contacts to supply driving power to a corresponding amplifier.

This will be described in detail with reference to the accompanying drawings.

The present invention can be applied to all cases of a telephone using a keyphone, and can be applied to a parking lot, a department store, a small workplace broadcast or a school broadcast. In the following description, for the convenience of explanation, the following description mainly describes the case where it is applied to the school broadcasting system.

The broadcasting system apparatus using the key phone system of the present invention is based on the premise that the general key phone system 100 and the broadcasting system 200 are provided.

In the case of the key phone system 100, a plurality of external telephones 11 and 12 connected to the key phone main unit 10, and a plurality of key phones and internal telephones 21, 22, ... It is. The key phone main device 10 has a trunk line card 31 connected to the external telephones 11 and 12, and an extension card connected to the plurality of key phones and internal telephones 11 and 12. 32) is installed.

A practical use example of such a general key phone system 100 will be described.

The external telephones 21 and 22 connected to the trunk line card 31 are connected as many as the number of use lines registered in the telephone station to perform functions in the same way as a general telephone.

Keyphones and internal telephones 21.22 connected to the extension card initiate calls by pressing " 9 " in most cases when making a call. External telephones 11 dial the keyphone number when connecting to an external call. Press to connect an external phone with the keyphone.

In addition, the broadcasting system 200 is composed of a broadcast equipment 50 and a plurality of speakers (61), (62), (63) ... connected to the broadcast equipment, in the case of a broadcast equipment (50) In case of school broadcasting, it consists of amplifiers 51, 52, ... of each grade, and group selectors 71, 72 for connecting the amplifiers and the speakers connected to the rear stages. have. These group selectors 71, 72, ... connect the amplifiers 51, 52, ... with the speakers 61, 62, ....

For example, in the case of first grade broadcasting, when three speakers are needed, the group selector 71 plays a role of connecting both the speaker 61 and two speakers (not shown). In some cases, the group selectors can perform the function of connecting the speakers of the desired grades (first grade and second grade) by connecting them with the speakers 62 and 63 of different grades. This function is also one of the functions of the general broadcasting system 200.

The present invention is based on the premise that the key phone system 100 and the broadcast system 200 are provided in this way, and a part of the extension card 32 of the key phone main device is used as the broadcast function card 32 '. In other words, when there are four broadcasting stations (for example, first graders, second graders, third graders, playgrounds), four lines of an extension card connected to a general key phone and a telephone can be used as a broadcasting function card.

The four lines of the broadcasting function card 32 'are configured to be input to the control unit 80 of the audio channel switching unit 300.

The audio channel switching unit 300 senses a signal applied to the control unit 80 to display a broadcast location, and a control unit 80 for driving a relay receiving the output of the broadcast function card 32 '. And an audio unit 90 for applying the output of the audio output terminal AUX of the broadcasting function card 32 'to the mixer unit MIX of the broadcasting equipment.

The mixer section MIX of the broadcasting equipment 50 is a mixer terminal provided in each of the amplifiers 51, 52,...

FIG. 2 is a circuit diagram illustrating the audio channel switching unit 300 of FIG. 1 in detail.

The output terminals J1-J4 of the broadcasting function card 32 'are connected to the light emitting diodes LED1-LED4 through resistors R1-R4 on one side, respectively, to form the display unit 70, and the relay coil on the other side. The control unit 80 is configured to be connected to M1-M4 so as to drive the relay contact KI-K4 excited by the relay coils M1-M4.

The relay contact point KI-K4 is a contact point for determining whether power is supplied to each of the amplifiers 51, 52, and.

The audio unit 90 allows the audio output terminal AUX of the broadcasting function card 32 'to be connected to the mixer MIX terminal of the broadcasting equipment amplifier, and the condenser is connected between the terminals AUX and MIX. It is connected to the jacks (J9), (J10) through (C1).

Before explaining the effects of the present invention configured as described above, the function of the circuit elements forming the present invention will be described first.

-External telephones (11), (12), ...

As a general telephone subscriber telephone, if the branch exchange has an automatic switching function, it is possible to broadcast the campus using the keyphone system and the broadcasting system.

Key phones and internal telephones (21), (22), ...-

In-house broadcasting can be performed using a broadcasting system using a key phone or a general telephone used in the premises.

Specifically, the broadcast method is to lift the handset, press the corresponding grade number (11-14), and then broadcast through the handset.

Keyphone Main Unit (10)

It is a commonly used key phone main device. If you press the grade number that you want to broadcast on the phone, you can receive DTMF (Duel Tone Multi Frequency: For example, if you press the phone number 1, you can receive the low frequency 697Hz and the high frequency 1209Hz at the same time). Switch that selects and connects the device, which transmits the voice signal to be broadcasted by the telephone to the audio channel switching unit 300, and has an impedance of 600Ω.

-CO Card (31)-

It connects an incoming call with an extension card, and when calling outside from an internal key phone or telephone, it has a function of connecting a telephone number entered through an extension card to an external subscriber.

Ext Card (32)

It connects the incoming call from the outside line to the internal line through the CO line card, exchanges the internal key phone or general phone, and connects the line to the CO line card when making an outside call.

On the extension card, 11 is a 1st grade broadcast, 12 is a 2nd grade broadcast, 13 is a 3rd grade broadcast, and 14 is a playground broadcast. It has been used for broadcasting in the premises through digital voice channel multicasting system.

Audio Channel Switcher 300

Matching the voice signal according to the impedance of 600Ω sent out from the phone to reduce the distortion (distortion) or noise by reducing the transmission efficiency.

Control 80

Consists of relays and relay contacts.

If you pick up the handset of a telephone or telephone to broadcast on campus and press the number of the corresponding grade, voltage DC 12V is sent to the line from the terminal corresponding to the speed dial number set in the main station extension card. When the power is supplied, an electric field is generated in the coil to control the contact using the characteristic of attracting the magnetic material) to operate the power voltage of the corresponding amplifier (Amp) of the broadcasting system and the group selectors 71, 72, To connect to ..

To end the campus broadcast, the handset of the phone or telephone is released, the line voltage is cut off and the relay is automatically reduced.

Display (70)

It consists of a resistor for current control and a light emitting diode (LED).

When the relay of the corresponding grade is driven by the control unit, the first grader is blue, the second grader is yellow, the third grader is green, and the playground broadcasting red light is turned on to indicate the state of broadcasting on campus.

-Voice (90)-

It is composed of DC component blocking and matching capacitor (C1) and audio signal connection jacks (J9, J10).

In order to transmit the voice signal of the handset to the mixer terminal (MIX) of the broadcasting equipment clearly from the audio terminal (AUX) for the broadcasting function on the extension card of the keypad main unit 10, press the speed dial number of the corresponding grade for the campus broadcasting. It blocks DC current and matches impedance.

-Amplifiers for Broadcasting Equipment (51), (52), (53) ...-

Existing broadcast system amplifies the weak voice signal of the microphone or phone to drive the speaker, the power supply voltage can also be operated manually by the audio channel switching unit 300.

The present invention configured as described above is able to perform both the role of the general key phone and the broadcasting system. First, the operation of the general key phone is described.

The external telephone 11 connected to the key phone main device 10 is connected as many times as the number of uses registered in the telephone station, and performs a transmission / reception function in the same way as a general telephone.

Key phones and internal telephones (21), (22), .. are dialed from the outside through the CO card 31 is connected, when dialing the identification number, such as "9" when dialing the call, from the extension card It is connected to a CO line card and can make a call with the outside. It works like a general phone phone.

As such, when the mobile phone is operated as a broadcasting system and selected as the extension number being used as the broadcasting function card 32 'from the extension card 32, the broadcasting device is connected to the broadcasting equipment.

That is, when using the school broadcasting function, if you select an extension number (for example, 11 for the first grade, 22 for the second grade, etc.) with the key phones and the internal telephones (21) and (22), the broadcasting function card (32 ') A control signal (DC 12 volts) corresponding to the control unit 70 is output.

In response to the control signal, the display unit 70 displays a light emitting diode and simultaneously drives a relay of the control unit 80 to supply power to the corresponding amplifier AMP to maintain a state in which broadcasting equipment can be driven. Then, the audio signal output from the audio terminal (AUX) of the broadcasting function card 32 'is applied to the mixer terminal (MIX) of the amplifier (AMP), and the group selector (71-74) is connected through the amplifier (AMP). Through the speaker 61-64 is output through the broadcast.

Referring to FIG. 2, the DC voltage output to the output terminals J1-J4 of the broadcast function card 32 'turns on the corresponding light emitting diodes LED1-LED4 while the broadcast function is operated. By exciting M4), the corresponding relay contact (K1-K4) is connected.

Also, terminals P1 and P2 of the output terminals J5-J8 are power input terminals, and terminals P3 and P4 are output terminals for supplying power to the amplifiers 51-54 connected to the rear stages. When the relay coils M1-M4 are excited and connected to the relay contacts K1-K4, the power is supplied to the corresponding amplifiers 51-54 through the output terminals P3 and P4 to perform the broadcasting function. It becomes possible.

The voice signal of the broadcasting function card 32 'is applied to the amplifiers 51-54 via the mixer MIX through the jacks J9 and J10, and then through the key phones and the internal telephones 21 and 22. It broadcasts with the output audio signal.

As described above, the present invention is capable of performing a broadcasting function using a key phone system, and operates in the same manner as a general key phone, while holding a handset of a key phone or a phone connected to an existing main device and pressing a shortcut button (11 to 14). By using the line voltage output to the corresponding number terminal of the internal exchange extension card through the line, the corresponding relay is driven to connect the power supply voltage of the broadcasting system of the corresponding grade and the speaker, and is sent out to the audio output terminal with the internal exchange extension card. A voice signal may be connected to a corresponding broadcasting system (AMP) to broadcast by group.

Therefore, on-site exchange device with automatic extension switching function can broadcast in school group by external telephone, and by using wireless microphone, it can be connected to broadcasting function anywhere in the school and broadcast wirelessly. It can improve work convenience and efficiency.

Claims (3)

A key phone system connected to an external phone, a key phone and an internal phone, the key phone system comprising a key phone main device equipped with a trunk line card and an extension card therein; A broadcasting system comprising a group selector for connecting an amplifier for each location and a speaker for each location, and a speaker for connecting with a group selector of the broadcasting equipment, the broadcasting system comprising: a broadcasting point for broadcasting between the keyphone main device and the broadcasting equipment; An audio channel switching unit including a display unit, a control unit for driving a relay of a desired broadcasting location according to the output of the extension card, and an audio unit for outputting a broadcast signal applied to the extension card and outputting the broadcast signal to the mix (MIX) of the broadcasting equipment. Broadcasting system apparatus using a keyphone system characterized in that The method of claim 1, A part of the extension card of the key phone main device is used as a broadcasting function card, and the audio portion of the audio card switching unit is configured to output the audio output (AUX) of the broadcasting card card to the mix (MIX) of the broadcasting equipment. Broadcasting system apparatus using keyphone system The method according to claim 1 or 2, A part of the extension card 31 is used as the broadcast function card 32 ', and the output of the broadcast function card 32' controls the relay coils M1-M4 and the relay contacts K1-K4 to correspond. Broadcasting system apparatus using a keyphone system, characterized in that the control unit 80 is configured to supply driving power to the amplifiers 51-54