KR100270163B1 - A wireless inter phone coupled a telephone - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wired / wireless transmission and reception apparatus having an interphone that is used in combination with a telephone capable of connecting and receiving an interphone in a wired and wireless manner.

The present invention not only can receive a telephone call through a telephone line by wire or wirelessly, but can also be connected to a telephone to make an interphone call by wire through a telephone receiver / receiver. Not only can the intercom call between the caller and the callee be wirelessly at a work site remote from the site, but the mobile phone carrying the portable interphone can operate the key of the user command input / display section to make the call with the callee wirelessly through the telephone. In addition, the caller and the intercom mobile phone (called party) can make calls by wire or wireless at low maintenance costs.

Description

Wired / wireless transceiver with interphone used in conjunction with telephone

The present invention relates to a right / wireless transceiver having an interphone connected to a conventional telephone and used in combination with a telephone capable of receiving an interphone and a telephone by wire and wireless.

In general, the speakerphone performs all the functions of a telephone and forms a trunk line loop without lifting a handset to call the callee or press a speakerphone key when a ringer signal arrives. A phone that can talk on the phone without holding the handset and has the ability to hold meetings.

As the conventional speakerphone as described above, there is a publication No. 90-5155 disclosed in Korean Patent Publication No. 1953.

The telephone disclosed in the patent publication counts the ring signal input when the ring signal arrives to the telephone having the function of speakerphone by software and automatically responds when the ring signal is set in the internal memory to form a trunk line and make a call. It is also configured to detect the incoming ring signal (Ring Tone) (Detection) to generate an automatic response signal.

That is, the speaker phone disclosed in Korean Patent Publication No. 90-5155 is connected between trunk lines (L ₁ ) to turn on / off-hook a trunk line as the handset is held as shown in FIG. 1. Hook switch (HS 1) and the trunk line (L ₁ ) (L ₂ ) is connected between the hook switch (HS 1) in conjunction with the hook-switch (HS) to turn on / off the ring signal in the opposite operation (HS ₁₎ ), A ringer circuit 10 which detects a ring signal input from a telephone line and outputs the input ring signal as an audible sound through a speaker SP, a photocoupler PC, a capacitor C ₁ , and a resistor. (R ₁₎ is composed of a local line (L ₁₎ and be connected between the input terminal of a ringer circuit 10, the local line ring to detect a ring signal to be input to the (L ₁₎ for outputting a predetermined signal detection Has a circuit 20, a dial digit key, a speakerphone key, and an answering machine mode key. The key input circuit 40 which generates a signal by pressing the key, and the input signal of the key input circuit 40 are analyzed by a built-in program, and the speaker phone function signal, dial transmission signal, DTMF transmission control signal and automatic It is connected between a microprocessor unit (hereinafter referred to as MPU) 50 for outputting a response mode signal and a speakerphone function signal, and a ring signal input port of the ring detection circuit 20 and the MPU 50. The MPU 50 is connected to the answering mode switch 30 for switching and outputting a ring detection signal to the MPU 50 according to the answering mode control signal, and outputs from the MPU 50 in parallel with the hook switch HS. A pulse dial connected between the analog switch (ASW) for turning on / off-hooking the trunk line by the signal of the speakerphone function signal and the trunk line (L ₁ ) (L ₂ ) and outputting from the MPU 50. Perl by transmission control signal It is connected between the dial pulse transmitting circuit 60 for transmitting the signal to the trunk line, the handset's transmitter and receiver, and the trunk line L ₁ (L ₂ ) to form a communication path when the handset is lifted, and the DTMF of the MPU 50 (Dual Tong Multi Frequency) To transmit to the microphone (MIC) and the speaker (SPK) by the output of the call circuit (70) for generating and outputting the multi-frequency code by the transmission control signal and the speakerphone function signal of the MPU 50 It is composed of a speaker phone circuit (Speaker Phone) circuit 80 to form a call path.

However, the conventional speaker phone configured as described above cannot receive an interphone when the user is away from the telephone, and therefore has to spend a telephone fee because an expensive wireless telephone, a walkie talkie, or a regular telephone must be used for the call. In addition, it requires a lot of equipment purchase cost, and because it has to broadcast a call to a person, there are a number of problems such as difficult to call, pay the telephone call fee according to the call.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to be connected to a telephone to make an interphone call and a telephone call by wire through a telephone handset, and to carry a caller wirelessly. The present invention provides a wired / wireless transceiver having an interphone used in combination with an interphone and a telephone capable of making a call.

The present invention can be connected to a telephone to make an interphone call by wire through a telephone receiver and receiver, and at the same time, a user can make a telephone call to an interphone between a caller and a called party wirelessly at a work site remote from the telephone. At the same time, there is provided a wired / wireless transceiver having an interphone used in combination with a telephone capable of calling an interphone coupled to a telephone in a portable interphone.

SUMMARY OF THE INVENTION The present invention provides a wired / wireless transceiver having an interphone, which is used in combination with a telephone that allows a caller and a mobile phone (caller) to talk to each other by wire / wireless at low maintenance costs.

In order to achieve the above object, the present invention receives a call signal transmitted by the caller from the keyboard of the telephone and the phone keyboard, and at the same time receives a voice signal input through the microphone and separates it into a transmission signal and a reception signal. Transmitting / receiving signal separating means for outputting, channel discriminating means for receiving a signal output from the transmitting / receiving signal separating means at the time of transmission through the signal control unit and discriminating a subscriber's channel, and the transmitting and receiving signal separating means Low frequency amplifying means for amplifying the output voice transmission signal into a low frequency audio signal, noise removing means for removing noise contained in the low frequency amplified signal output from the low frequency amplifying means, and outputting from the channel discriminating means It is a crystal that receives the channel signal and synthesizes it with the oscillation signal and outputs high frequency for transmission and reception of 33.3MHz band. A frequency modulating means for synthesizing the low frequency speech signal from which the noise output from the noise removing means is removed and the high frequency of the 33.3 MHz band output from the crystal oscillator and frequency modulating the carrier wave; A frequency multiplying unit for receiving the received signal and multiplying it at a high frequency in the 900 MHz band, and a power amplifier for amplifying a large transmission signal to compensate for the attenuation at the time of receiving the transmission signal multiplied at the high frequency from the frequency multiplying unit Frequency multiplier means for receiving a high frequency of 33.3 MHz output from the crystal oscillator and multiplying it to a frequency of 900 MHz according to the channel signal determined by the channel discriminating means among the call signals transmitted by the caller through the antenna, and the antenna Receives call signal sent by caller and amplifies at high frequency A high frequency amplifying means, a frequency mixing means for receiving a signal multiplied by a frequency of 900 MHz band output from the frequency multiplying means and a high frequency output from the high frequency amplifying means, and separating an intermediate frequency, and an intermediate frequency output from the frequency mixing means. An intermediate frequency amplifying means for receiving and amplifying the signal, a noise removing means for removing the noise by receiving the signal amplified by the intermediate frequency amplifying means, and demodulating the signal transmitted by the sender by receiving a carrier signal from which the noise is removed from the noise removing means; Low frequency amplifying means for receiving a signal demodulated by a low frequency audio signal from the frequency demodulating means, low frequency amplifying at an audible frequency so as to be heard through a speaker, and outputting the low frequency amplifying signal to the transmitting and receiving signal separation means; Of the signals output from the low frequency amplifying means A call signal detecting means for detecting a call origin and receiving a call signal separated by the transmitting / receiving signal separating means at the time of transmission, and detecting a call signal, and a channel signal corresponding to the subscriber number output from the signal control unit at the time of transmission. A ring signal generator for outputting the ring signal by the ring control signal output from the signal control unit in response to a call signal input from the call signal detection means at the same time as being output to the channel discriminating means, and the remaining amount of battery And a user command input / display section composed of a key for inputting a user's intercom call signal to the signal control section and controlling on / off of the power supply.

1 is a conventional telephone circuit diagram,

2 is a control block diagram of a wireless transmitter of a wire / wireless transceiver having an interphone used in conjunction with a telephone according to an embodiment of the present invention;

3 is a control block diagram of a wired / wireless transceiver having an interphone used in conjunction with a telephone according to an embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

1: telephone 2: signal control unit

3: Transmission and reception signal separation means 5: Low frequency amplification means

7: Noise elimination means 8: Channel identification means

11: crystal oscillator 13: frequency modulating means

15: frequency multiplication means 17a, 17b: antenna

19: power amplification means 21: frequency multiplication means

23: high frequency amplification means 25: frequency mixing means

27: intermediate frequency amplification means 29: noise removing means

31: frequency demodulation means 33: low frequency amplification means

35: call signal detecting means 37: ring signal generator

39: user command input / display

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a control block diagram of a wireless transmitter of a wired / wireless transceiver having an interphone used in combination with a telephone according to an embodiment of the present invention, and FIG. 3 is a coupled to the telephone according to an embodiment of the present invention. A control block diagram of a radio receiver of a wired / wireless transceiver having an interphone to be used.

A wired / wireless transceiver having an interphone used in conjunction with a telephone of the present invention is composed of a transmitter / receiver shown in FIG. 2 and a receiver / transmitter shown in FIG.

The transmitter and the receiver in the wired / wireless transceiver having the interphone used in combination with the telephone of the present invention have the same configuration, but the transmitter can be connected to a normal telephone so as to be called to the interphone subscriber. The receiver is equipped with a microphone 36 and a speaker 34 to communicate with the caller (sender) only when receiving the intercom signal in the shape of a fountain pen so that the interphone subscriber can carry it. A user command input / display section 39 is provided with a key for inputting a user's call signal so as to make a call to an interphone and controlling on / off of the power supply.

Here, the own phone refers to a phone used in conjunction with its own intercom. In the mobile intercom used in conjunction with the phone, other intercom subscribers except for themselves cannot be called, but used in combination with the mobile intercom. The telephone can call, and the portable interphone cannot call other interphone subscribers.

A transmitter in a wired / wireless transceiver having an interphone used in conjunction with a telephone of the present invention receives a call signal transmitted by a caller from a keyboard of the telephone 1 and a signal controller 2 for controlling the overall operation. At the same time, the transmission and reception signal separation means (3) for receiving a voice signal input through the microphone (36) and separating the transmission signal and the reception signal and outputting them, and the transmission and reception signal separation means (3) at the time of transmission. A channel discriminating means (8) for receiving the output signal through the signal controller (2) for discriminating a subscriber's channel, and for amplifying a voice transmission signal output from the transmitting / receiving signal separating means (3) into a low frequency audio signal; Low frequency amplifying means (5), noise removing means (7) for removing noise contained in the low frequency amplified signal output from the low frequency amplifying means (5), and outputting from the channel discriminating means (8) Being A crystal oscillator 11 for receiving a signal and synthesizing it with an oscillation signal and outputting a high frequency for transmitting and receiving in the 33.3 MHz band, a low frequency speech signal from which the noise output from the noise removing means 7 is removed, and the crystal oscillator 11 A frequency modulating means (13) for synthesizing a high frequency of 33.3 MHz band and frequency modulated with a carrier wave, and a frequency multiplier (15) for receiving a signal modulated with a carrier wave by the frequency modulating means (13) and multiplying it at a high frequency (900 MHz band) (15). And a power amplifier 19 which amplifies the transmission signal greatly and transmits it from the antenna 17a so as to compensate for the amount attenuated at the time of receiving the transmission signal multiplied by the high frequency in the frequency multiplying means 15. .

A receiver in a wired / wireless transceiver having an interphone used in conjunction with a telephone of the present invention is a channel signal determined by the channel discriminating means 8 of call signals transmitted by a caller through an antenna 17b at the time of reception. According to the crystal oscillator 11 receives a high frequency of 33.3MHz band multiplied by 900MHz band frequency multiplier 21, and receives the call signal transmitted by the caller through the antenna 17b to amplify at a high frequency Frequency mixing means 25 for receiving a high frequency amplification means 23 and a signal multiplied by a frequency of 900 MHz band output from the frequency multiplier 21 and a high frequency output from the high frequency amplification means 23 to separate an intermediate frequency. And an intermediate frequency amplifying means 27 for receiving and amplifying the intermediate frequency output from the frequency mixing means 25 and a signal amplified by the intermediate frequency amplifying means 27. Noise demodulating means (29) for receiving noise and removing noise, frequency demodulating means (31) for receiving a carrier signal from which noise is removed from the noise removing means (29), and demodulating the signal transmitted by a sender; A low frequency amplifying means 33 for receiving the demodulated signal as a low frequency audio signal at 31 and amplifying the low frequency at an audible frequency so as to be heard through the speaker 34 and outputting the signal to the transmitting and receiving signal separating means 3; Detects a call signal from the signal output from the low frequency amplifying means 33 at the time of reception, and detects a call signal by receiving the call signal separated by the transmit / receive signal separating means 3 at the time of transmission. A ring signal generator 37 for outputting a ring signal by means of a ring control signal output from the signal control unit 2 according to the means 35, the call signal input from the call signal detection means 35, and a battery; Of A user command input / display section 39 composed of a key for inputting an interphone call signal to the signal control section 2 and controlling the on / off of the power supply to the user's telephone while displaying a volume, a call, and a call Equipped.

In FIG. 2 and FIG. 3, reference numeral 34 denotes a DC power supply for supplying DC power.

Next, the operation and effect of the wired / wireless transceiver having an interphone used in combination with the telephone according to the embodiment of the present invention configured as described above will be described.

First, when the subscriber number of the intercom subscriber is pressed in order to call the intercom subscriber from the keyboard (not shown) of the telephone 1 or the user command input / display unit 39 of the portable intercom, the transmission / reception signal separation means ( 3) the transmission and reception signals are separated to amplify the voice transmission signal into the low frequency audio signal by the low frequency amplifying means 5, and then the noise contained in the low frequency amplified signal output from the low frequency amplifying means 5. ) Is removed from the noise removing means 7 and output to the frequency modulating means 13.

Next, the signal output from the transmission / reception signal separation means 3 is input to the call signal detection means 35 to detect the call signal and output it to the signal control unit 2. The signal control unit 2 outputs data on the subscriber number detected by the call signal detecting unit 35 to the channel discriminating means 8 to discriminate the subscriber number from the channel discriminating means 8.

Data for the subscriber number determined by the channel discriminating means (8) is output to the crystal oscillator (11), and synthesized with the oscillation signal in the crystal oscillator (11) to transmit a high frequency of 33.3 MHz to the frequency modulation means (13). Output

The frequency modulating means (13) synthesizes a low frequency speech signal from which the noise output from the noise removing means (7) is removed and a high frequency (33.3 MHz) output from the crystal oscillator (11), frequency modulates the carrier wave, and multiplies the frequency. Output to the means (15), the frequency multiplying means (15) receives a signal modulated by a carrier wave in the frequency modulating means (13) and multiplies at a high frequency of 900 MHz, and multiplies at a high frequency by the frequency multiplying means (15) In response to the received transmission signal, the power amplifier 19 greatly amplifies the transmission signal so as to compensate for the amount attenuated at the time of transmission, and transmits it from the antenna 17a.

The signal transmitted from the antenna 17a is received by the antenna 17b of the receiver of the intercom subscriber to determine the channel by the channel discriminating means 8, and the channel signal of the subscriber determined by the channel discriminating means 8 is modified. The oscillator 11 is output to the oscillator 11, and the crystal oscillator 11 is modulated and output at a high frequency of 33.3 MHz.

The 33.3 MHz call signal output from the crystal oscillator 11 is multiplied by the frequency multiplier 21 to a frequency of 900 MHz and amplified by the high frequency amplifying means 23 and output to the frequency mixing means 25.

Thereafter, the frequency mixing means 25 receives a signal multiplied by a frequency of the 900 MHz band output from the frequency multiplying means 21 and a high frequency output from the high frequency amplifying means 23 to separate an intermediate frequency, and the frequency mixing. The intermediate frequency separated by the means 25 is amplified to an intermediate frequency by the intermediate frequency amplification means 27.

The signal from which the intermediate frequency is amplified by the intermediate frequency amplifying means 27 is removed by the noise removing means 29, and then, by the frequency demodulating means 31, the signal is demodulated by a call signal transmitted by the caller (caller). The signal demodulated by the low frequency audio signal by the demodulation means 31 is low frequency amplified by the low frequency amplification means 33 at the audible frequency and output to the transmission / reception signal separation means 3 and to the call signal detection means 35. Is output.

At this time, the low frequency signal output to the transmission / reception signal separation means 3 is output to the call signal detection means 35, and the call signal detection means 35 detects the call signal and outputs it to the signal control unit 2. do. Accordingly, the signal control unit 2 outputs a ring signal to the ring signal generator 37, so that the ring signal generator 37 emits an alarm sound to notify the subscriber that the interphone has been called.

At this time, when the caller speaks a message to talk to the microphone 36, the receiver 34 separates the received signal from the transmission / reception signal separating means 3 of the receiver in the same manner as the transmission of the call signal. When the receiver transmits a message to the microphone 36, the receiver separates the transmission signal (the receiver's message) from the transmission / reception signal separation means 3 of the receiver. According to the signal transmission method of the message, the message is separated into the received signal by the caller's transmit / receive signal separating means 3, and then voice is transmitted to the caller through the caller's speaker (or the receiver of the telephone 1). You can make a call.

The signal control unit 2 receives the call signal detected by the call signal detecting unit 35 and outputs the call signal to the user command input / display unit 39 to visually notify the called party.

On the other hand, the intercom device used in combination with the telephone of the present invention can receive a telephone line and wirelessly received through the telephone line (l1, l2), and also the self-desk desk (telephone 1) carrying a portable interphone When the phone is located near the location, it is possible to connect to the telephone like a normal intercom and make an interphone call between the caller and the called party through a telephone receiver and receiver.

On the other hand, if you carry a portable intercom device and are in the field or in an intercom area where you can make an intercom call, place your intercom on your own phone (here, your phone is a telephone used in conjunction with your portable intercom). If desired, by calling the key of the user command input / display unit 39, the user can call the interphone with his / her phone through the reverse path described above.

In the above description, the low frequency speech signal from which the noise output from the noise removing means 7 is removed by the frequency modulating means 13 and the high frequency of 33.3 MHz band output from the crystal oscillator 11 are synthesized and then frequency modulated into a carrier wave. And output to the frequency multiplying means (15), wherein the frequency multiplying means (15) receives a signal modulated by the carrier from the frequency modulating means (13) and multiplies at a high frequency of 900 MHz, and the frequency multiplying means (15). In the present invention, the transmission signal multiplied by the high frequency is amplified by the power amplifier 19 to compensate for the amount attenuated at the time of transmission. Thus, the transmission signal is transmitted from the antenna 17a as an example, but the present invention is not limited thereto. For example, after multiplying the high frequency of 33.3MHz band output from the crystal oscillator to the high frequency of 900MHz band by the frequency multiplying means, the low frequency voice signal And synthesized by frequency modulating a carrier made of a transmission signal, it receives the created transmission signal may be transmitted from the antenna to largely amplify the transmission signal so as to compensate at both the power amplifier is attenuated during the transmission of course.

As described above, according to the wired / wireless transceiver having an interphone used in combination with the telephone of the present invention, it is possible to receive a telephone call through a telephone line by wire or wirelessly. In addition to making intercom calls over a wired line through a handset and a receiver, the intercom call can be made wirelessly between the caller and the callee even when the callee is at a work site remote from the telephone. By operating the key of the user command input / display unit, you can talk to the caller wirelessly with your own phone, and the excellent effect that the caller and the intercom mobile phone (caller) can talk to each other by wire / wireless with low maintenance cost have.

Claims (1)

Receiving a call signal transmitted by the caller from the signal control unit 2 and the keyboard of the telephone 1, which controls the entire operation, and receives a voice signal input through the microphone 36 and separates it into a transmission signal and a reception signal. Channel discrimination means for discriminating the subscriber's channel by receiving the signal output from the transmission and reception signal separation means 3 and the signal output from the transmission and reception signal separation means 3 at the time of transmission through the signal control unit 2 ( 8), low frequency amplifying means (5) for amplifying a voice transmission signal output from the transmitting / receiving signal separating means (3) into a low frequency audio signal, and a low frequency amplified signal output from the low frequency amplifying means (5). Noise canceling means (7) for removing the noise and the crystal oscillator for receiving the channel signal output from the channel discriminating means (8) and synthesizing with the oscillation signal to output high frequency for transmission and reception of 33.3MHz band With 11, A frequency modulating means (13) for synthesizing the low frequency speech signal from which the noise output from the noise removing means (7) is removed and the high frequency of the 33.3 MHz band output from the crystal oscillator (11) and frequency modulating the carrier wave; A frequency multiplying means (15) for receiving a signal modulated with a carrier wave in the means (13) and multiplying it at a high frequency in the 900 MHz band, and an amount attenuated at the time of receiving a transmission signal multiplied at a high frequency in the frequency multiplying means (15). In order to compensate, the power amplifier 19 which amplifies the transmission signal greatly and transmits it from the antenna 17a and the channel signal determined by the channel discriminating means 8 among the call signals transmitted by the caller through the antenna 17b at the time of reception. Accordingly, the frequency multiplier 21 receives a high frequency of 33.3 MHz output from the crystal oscillator 11 and multiplies by a frequency of 900 MHz and transmits the caller through the antenna 17b. A high frequency amplification means 23 for receiving a native code and amplifying it at a high frequency, receiving a signal multiplied by a frequency of 900 MHz band output from the frequency multiplier 21 and a high frequency output from the high frequency amplification means 23 receives an intermediate frequency. A frequency mixing means 25 for separating, an intermediate frequency amplifying means 27 for receiving and amplifying the intermediate frequency output from the frequency mixing means 25, and receiving the signal amplified by the intermediate frequency amplifying means 27 for noise. A noise demodulation means (31) for removing a signal, a frequency demodulation means (31) for receiving a carrier signal from which the noise is removed from the noise remover (29), and demodulating the signal into a signal transmitted by a sender, and the frequency demodulation means (31). The low frequency amplified signal received by the low frequency audio signal in the low frequency amplification at an audible frequency so as to be heard through the loudspeaker 34 and outputted to the transmit / receive signal separating means 3. A call signal is detected from the signal output from the low frequency amplifying means 33 at the time of reception, and receives the call signal separated by the transmission / reception signal separation means 3 at the time of transmission. A ring signal generator for outputting a ring signal by a ring control signal output from the signal control unit 2 according to a call signal detecting means 35 for detecting and a call signal input from the call signal detecting means 35 ( 37) and a user command input / display section composed of keys for displaying the remaining battery capacity, during and during a call, and inputting the user's interphone call signal to the signal controller 2 and controlling the power on / off. A wired / wireless transceiver having an interphone for use in combination with a telephone, characterized by comprising (39).