KR200269557Y1 - An auto-connecting telephone using a computer - Google Patents

Abstract

The present invention is equipped with a dial pad to make a phone call even when the computer is turned off according to the operation of a button key.Automatic connection using a computer that adjusts the size of the transmitted / received signal according to the variable resistor connected to the outside It's about the phone.

To this end, the present invention provides a telephone line (TIP, RING), a recording device for recording a recorder (J2), a headset (J1) including earphones and a microphone, a rectifying circuit for rectifying TIP and a RING signal input through a PSTN, and an external DTMF tone. A DTMF tone detection circuit for detecting hooks and turning on / off a hook, a DTMF generating circuit for converting a DTMF signal, and a computer for installing an automatic telephone dialing program. It has a built-in ring signal output circuit to notify the ringtone when an inbound call; A speech network circuit connected to the recording device and the headset, for refining a voice signal received through the telephone line and amplifying the voice signal into the microphone and earphone / speaker of the headset and transferring the voice signal to the headset or the recording device; And an RS232C circuit for serial communication between the computer and the hook on / off and DTMF generator.

Description

Automatic connection telephone using computer {AN AUTO-CONNECTING TELEPHONE USING A COMPUTER}

The present invention relates to an automatic access telephone using a computer, the dial pad is mounted to make a call even when the computer is turned off according to the operation of a button key. It relates to an automatic access telephone using a computer to adjust the size of.

In general, in order to make a call using a computer, a modem-only call, a call with the other party using a telephone handset, a one-time call instead of a continuous call, and a separate additional device are used when recording (recording). Record through the recording.

However, when making a phone call using a computer, the modem must be installed inside the computer, and the handset must be picked up and released when the phone is hooked on or off. It is impossible to make automatic phone calls continuously because it must be done.

The present invention was devised to solve the above problems, the present invention is equipped with a dial pad to make a phone call even when the computer is turned off according to the operation of the button key, the variable resistor connected to the external transmission and reception volume In accordance with the present invention, there is provided an automatic access telephone using a computer for adjusting the size of a signal transmitted and received.

In addition, the present invention is to provide a self-connecting phone using a computer that is built in the bell inside the inbound, to notify the ringtone when a call.

Automatic connection telephone using a computer according to an aspect of the present invention for achieving the above object, through a telephone line (TIP, RING), recording device connection recording device (J2), a headset (J1) including earphones and microphone, PSTN Rectifier circuit for rectifying incoming TIP and RING signals, DTMF tone detection circuit for detecting DTMF tones from the outside and turning on / off the hook, DTMF generator circuit for converting DTMF signals, and automatic dialing program An automatic connection telephone having a computer for installation, comprising: a ring signal output circuit having a bell therein to be notified by a ringtone when an inbound telephone is received; A speech network circuit connected to the recording device and the headset, for refining a voice signal received through the telephone line and amplifying the voice signal into the microphone and earphone / speaker of the headset and transferring the voice signal to the headset or the recording device; And an RS232C circuit for serial communication between the computer and the hook on / off and DTMF generator.

Preferably, the speech network circuit, the transmission volume control circuit for adjusting the magnitude of the signal to be transmitted by the transmission automatic gain in the U7 when the voice signal coming through the MIC is changed by a variable resistor connected to the outside, and receiving The received signal is compared with the bias and reference signal, and then amplified by the internal transmitter amplification stage.The received volume control circuit adjusts the received signal by the variable resistor connected to the outside. While inputting to terminal 7 and terminal 7, the signal controlled by the receiving volume control circuit is input to terminal 3 of the headset, while the MIC signal input from terminal 3 of the headset is transmitted by the ratio of the second transformer. It characterized in that it comprises a voice input and output circuit output to the recording device after.

1 is a block diagram for explaining the overall configuration of an automatic access telephone using a computer according to the present invention,

2 is a circuit diagram illustrating a rectifier circuit and a speech network circuit;

3 is a circuit diagram for explaining a ring signal output circuit;

4 is a circuit diagram for explaining a constant voltage supply circuit;

5 is a circuit diagram for explaining a DTMF generation circuit;

6 is a circuit diagram for explaining a dial pad circuit;

7 is a circuit diagram for explaining a circuit of the RS232C method;

8 is a circuit diagram for explaining a DTMF tone detection circuit;

9 is a circuit diagram for explaining an MPU.

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

100: rectifier circuit 200: ring signal output circuit

300: speech network circuit 400: DTMF generation circuit

500: DTMF tone detection circuit 600: dial pad input circuit

700: RS232C circuit 800: Computer

900: MPU

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

The present invention below is equipped with a dial pad to make a phone call even when the computer is turned off according to the operation of the button key, the computer to adjust the size of the signal transmitted and received according to the variable resistor connected to the external transmission volume The automatic connection telephone used will be described as a preferred embodiment, but the technical idea of the present invention is not limited to this and can be variously modified and implemented by those skilled in the art.

Referring to Figs. 1 to 9 in detail an automatic access telephone using a computer according to the present invention is as follows.

1 is a block diagram for explaining the overall configuration of the automatic access telephone using a computer according to the present invention, Figure 2 is a circuit diagram for explaining the rectifying circuit and speech network circuit, Figure 3 is a ring signal output circuit 4 is a circuit diagram for explaining a constant voltage supply circuit, FIG. 5 is a circuit diagram for explaining a DTMF generation circuit, FIG. 6 is a circuit diagram for explaining a dial pad circuit, and FIG. 7 is a circuit of an RS232C method. 8 is a circuit diagram illustrating a DTMF tone detection circuit, and FIG. 9 is a circuit diagram illustrating an MPU.

First, referring to FIG. 1, an automatic connection telephone using a computer will be described. An automatic connection telephone using the computer is a system for automatically dialing by connecting to a computer in RS-232C without a separate communication device. When a predetermined button signal is input by mounting a pad, a phone call function is performed even when the computer is turned off in response to the input button signal, and the volume of the transmission and reception can be separated and adjusted separately. It has a built-in function that notifies you when a call comes in as a ringtone, checks the receiving environment status such as fax or busy, and connects to the next call again, switches the extension using the transfer button, and mute ) To prevent the customer from hearing the agent's voice. Such that the re-dial function to the function performed.

The automatic connection telephone using the computer includes rectifier circuit 100, ring signal output circuit 200, speech network circuit 300, DTMF generation circuit 400, DTMF tone detection circuit 500, dial pad input circuit 600 ), An RS232C circuit 700, a computer 800, and an MPU 900, wherein the speech network circuit 300 includes a transmission volume control circuit 310, a reception volume control circuit 320, and a voice input / output circuit ( 330) and the like.

Referring to FIG. 2, the rectifier circuit and the speech network circuit will be described. First, the rectifier circuit 100 is protected against overvoltage through the varistor RV1, and the TIP signal and the RING signal input through the PSTN JP1 are stored. The DC signal is connected through the first bridge diode D1 BRIDGE, and the DC signal is connected to one side of the 28 th capacitor C28 and is also connected to the emitter terminal of the third transistor Q3.

The other side of the twenty eighth capacitor C28 is connected to one side of the tenth resistor R10 and is connected to the base terminal of the third transistor Q3.

The other side of the tenth resistor R10 is connected to the second light emitting diode D2 LED to emit light, and the other side of the second light emitting diode D2 LED is connected to the emitter terminal of the fourth transistor Q4.

The HOOK signal is connected to the other side of the eighteenth resistor R18, and one side of the eighteenth resistor R18 is connected to the base terminal of the fifth transistor Q5.

When the HOOK signal is input, the HOOK signal is connected to one side of the sixteenth resistor R16 and flows to the emitter terminal of the fifth transistor Q5 connected to the other side. At this time, the base signal becomes "LOW" in the fifth transistor Q5, and the signal of the emitter terminal flows to the collector terminal.

The HOOK signal is protected by the fourth zener diode Z4, and the signal is input to terminal 1 of the speech network U7 (for example, KA8603).

The fourth zener diode Z4 operates when a surge voltage other than a predetermined voltage flows to protect the circuit.

The ring signal output circuit 200 is connected to the OFCR when the signal from the TIP and RING lines of the rectifier circuit 100 enters the 8 and 1 terminals of the bell generator U4 (for example, KA2418B). According to the characteristics of the eleventh capacitor (C11) connected to the resistor and the SCC to control the output frequency inside the U4 pulse signal flows to the piezo 210 through the 5th terminal (OUTPUT) to generate a ring tone.

Referring to FIG. 3, the ring signal output circuit 200 will be described in more detail. In the ring signal output circuit 200, a telephone line TIP is connected to one side of the sixth capacitor C6, and the other side is the nineteenth resistor R19. Is connected to one side. One side of the nineteenth resistor R19 is connected to the sixth capacitor C6, and the other side thereof is connected to the eighth terminal of the bell generator U4. The telephone lines TIP and RING are connected to the first terminal of the U4 and the eighth. It is connected to the terminal and detects when a telephone call is made and sends a pulse to terminal 5 to be connected to one side of the 24th resistor R24, and the other side generates a ring tone through the piezo 210 (PIEZO).

Terminal 7 of U4 is connected to the (+) side of the tenth capacitor (C10), (-) side is grounded, terminal 3 is connected to one side of the eleventh capacitor (C11), the other side is grounded.

Referring now to the speech network circuit 300 shown in FIG. 2, the speech network circuit 300 includes a transmission volume adjusting circuit 310, a receiving volume adjusting circuit 320, a voice input / output circuit 330, and the like. After converting the signal input through the PSTN (JP1) to the DC via the first bridge diode (D1), it is applied to the first terminal of the speech network (U7), referred to as a "headset" (hereinafter referred to as "headset") The voice of the speaker and the DTMF tones go out to terminal 1 (VL) and connect to PSTN through MIC of.), Terminal 4 (RXO +) and terminal 5 (RXGA) of U7 are connected to receiver of headset. Terminal 6 (MIC-) and Terminal 7 (MIC +) are connected to terminal 3 (MIC) of the headset.

On the other hand, the 12th terminal MUTE is a signal coming from the 40th terminal of the MPU, and the 11th MF is a signal coming from the 7th terminal DTMF of the DTMF tone generator U3 (for example, HT9200A).

Further, terminal 13 is connected to terminal 8 of DTMF tone generator U3 and terminal 15 of VDT of DTMF tone detector U5 (eg, CMX673D4) to supply power.

In addition, the DTMF tones coming through the PSTN (JP1) are connected to the 10th terminal (SIGNAL) of the DTMF tone detector U5 via the VCC_HOOK via the speech network (U7), and the line status signals from the PSTN (for example, fax). Signal, BUSY signal, RING BACK signal, busy signal, hook-off signal, etc.) to U5.

Then, terminal 7 of U5 (DETECT) transmits the detected DTMF signal to terminal 8 of the MPU (DTMF), and terminal 1 of the MPU (ENABLE) sends a signal to terminal 5 of U5 to decode U5. Reset or output the detected signal.

The fifth zener diode operates when a surge voltage other than a constant voltage flows to protect the circuit.

Meanwhile, the transmission volume control circuit 310 may make a reference to a signal transmitted by AGC (automatic gain control) after the received signal is compared with a bias and a reference, and the reference is TXGA2 at the third terminal. The size of the signal transmitted by the 39th variable resistor R39 connected to the control unit may be adjusted.

The other party's voice signal is received by terminal 10 (RXI) of U7 and flows into the SP line through terminal 4 (RXO) so that the user can hear the other party's voice through headset J1.

Of course, his voice output through the MIC line is fed back to the SP line.

The receiving volume control circuit 320 is amplified and received by the internal transmitter amplifier stage after comparing the received signal with the bias and reference, the magnitude of the signal can be adjusted by the 29 th variable resistor (R29) connected to the outside. have.

The voice input / output circuit 330 inputs a signal input from the third terminal of the headset to the sixth terminal and the seventh terminal of the U7, while the signal controlled by the receiving volume control circuit 320 is controlled by the headset J1. It is input to terminal 3 to listen to the other party's voice signal.

The MIC signal input from the third terminal of the headset is transmitted by the ratio of the second transformer (TRANSFORMER) T2 and then output to the recording device J2.

In addition, the signal received by the receiving volume control circuit 320 is also transmitted by the ratio of the first transformer (T1) and then output to the recording device (J2) to listen to the received signal loudly without using the headset (J1) Can be.

The 12th terminal of U7 is connected to one side of the 45th resistor R45, the other side of the 45th resistor R45 is connected to the 40th terminal of the MPU, and a mute button is selected from the 40th terminal of the MPU. When the button signal comes in, the other party can't hear the caller.

Terminal 8 of the U7 is CST (Current Stablilizer), terminal 9 is ground, terminal 14 is VST (Voltage stabilizer), and terminal 15 is AGC (Automatic Gain Control).

The speech network circuit 300 outputs a voice signal and a tone signal through the fourth terminal RXO of the speech network U7, and the tone signal is transmitted to the tenth terminal SIGNAL of the DTMF tone detector U5 through VCC_HOOK. Upon entering, UHI sends the "HIGH" and "LOW" signals to terminal 7 (DETECT) of terminal 7 (DETECT).

Then, the MPU checks the period of the pulse and detects whether the tone signal is BUSY, RING BACK, busy, or hook off, and RS232C through terminal 7 (TX_232). When sent to the circuit 700, the signal enters the computer 800 and the application recognizes the signal as defined by the CPT protocol to provide an interface to the user.

Of course, in order for the DTMF tone detector (U5) to work, in an application on a computer previously, when the enable signal enters the MPU's 5th terminal (RX_232) through the serial port, the MPU is connected to U5 through the 1st terminal (enable). It is necessary to give the "HIGH" signal to the output of the 7th terminal of the DTMF tone detector U5 to enable "HIGH" and "LOW" so that the DTMF tone detector U5 is enabled.

The DTMF tone detection circuit 500 is a circuit that senses a certain signal among data coming in through the serial port as a function of controlling the entire circuit, and detects DTMF tones from the outside to turn on / off the hook. OFF) can be operated.

The DTMF tone detection circuit 500 will be described in more detail with reference to FIG. 8. The second terminal X1 of the DTMF tone detector U5 is an input portion of an oscillator output of a chip and an input portion of an external clock. Terminal 4 (X2) is the inverter output of the oscillator of the chip. That is, the X1 and X2 terminals are connected to the crystal resonator to generate a frequency.

Referring to FIG. 5, the DTMF tone generating circuit will be described. The terminal 1 of the DTMF tone generator U3 in the DTMF tone generating circuit 400 may have a chip enable coming from the terminal 44 of the MPU. The input terminal of the signal, and the third terminal (X1) is the input portion receiving the oscillator of the fourth terminal (X2) of U5.

Terminal 5 of the DTMF tone generator U3 is a clock coming from terminal 42 of the MPU U6 (for example, AT89LV52), and terminal 6 is data coming from terminal 43 of the MPU U6. It is connected to one side of the fifteenth resistor (R15), the other side is connected to the terminal 43 of the MPU generates a DTMF sound corresponding to each number under the control of the MPU.

That is, when the MPU sends the phone number input through the RS232C of the computer or through the button on the dial pad to the terminal 6 of the DTMF tone generator U3 through the terminal 43, the signal is sent. The recognized U3 generates DTMF tones through the 7th terminal (DTMF) and sends them to the 11th terminal (MF) of the speech network (U7).

Then, the speech network U7 amplifies through the internal terminal OP AMP and outputs it through the VL terminal 1 to generate a telephone tone through the PSTN.

On the other hand, the dial pad portion, as shown in Figure 6 the user presses a button (not shown) that is the dial pad external interface is recognized through the terminals of the KEY IN 0 ~ 3 and KEY OUT 0 ~ 3 of the MPU .

The current input through the adapter 30, which is the MPU power supply, is converted into a 5V constant voltage through the constant voltage supply circuit 50, and then VCC_5V is connected to the 38th terminal (VCC_5V) of the MPU to supply a voltage.

When the constant voltage supply circuit 50 is supplied power from the battery (5.6V) to the third terminal of the jack, the second terminal of the jack (JACK) is grounded, the power supply to the first terminal of the jack through the tenth diode When connected to terminal 1 of the regulator U2 (eg, KA7805R), the supplied power is adjusted to a constant voltage (eg, 5V) and then rippled through terminal 27 through the 27th capacitor C27. This removed 5V power is supplied to the entire CPU power supply.

Now, referring to FIG. 7, a circuit for RS232C will be described. The 5th terminal (RX_232) and the 7th terminal (TX_232) of the MPU are connected to RX_232 and TX_232 of the RS232C circuit, respectively, and the digital signal coming into the serial port RS232C is connected. It is passed to RX_232 of MPU.

The output signal of the MPU is then connected to the serial port via TX_232 and responds to the computer.

Thereafter, VCC_5V of RS232C is connected to terminal 38 of MPU and VCC_5V of constant voltage supply circuit to become a source of photo coupler.

The photo coupler is for electrical isolation from a serial port of a computer, and removes noise of a voice band that can enter through the serial port and transmits only the noise-removed data.

On the other hand, terminal 29 of the MPU is connected to terminal 38 (VCC_5V) of the MPU so as to logically go high to write the internal program memory.

When the power is supplied to terminal 38 (VCC) of U6, the MPU sends a "HIGH" signal through terminal 41 (HOOK) to turn off the hook of rectifier circuit 100.

When the MPU supplies power to the 38th terminal (VCC) of the MPU through an adapter, the MPU sends a "HIGH" signal through the HOOK terminal to turn off the HOOK of the rectifier circuit 100.

Then, the MPU enters the KEY part of the MPU through data sent from the computer to the RX_232 of the MPU through a serial port and an external button key (for example, a dial button, mute button, LNF button, FLA button, etc.). It is possible to talk with the other party based on the input signal, the 7th terminal (DETECT) coming from U5, and VCC_5V coming from the rectifier circuit 100, but when the mute button is input, the mute terminal of the speech network (U7) Send a mute signal to activate the mute function.

In addition, when a HOOK signal is generated, a "HIGH" signal is generated on the HOOK line of the rectifier circuit 100, so that a transistor serving as a switch is turned on and HOOK off (meaning that the telephone is turned on).

In addition, when generating the DTMF tone, CLK sends the enable signal to terminal 1 of the DTMF tone generator U3 at the terminal 44 (/ CE) of the MPU to operate the DTMF tone generator U3, The clock is synchronized to terminal 5 (CLK) of U3 through the terminal 42 (CLK) of the MPU, and the clock signal is dialed to terminal 43 (DATA) of the MPU to be able to talk with the other party.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention defined in the appended claims.

As described above, the present invention performs a function such as automatically dialing and hanging through a computer using an automatic access telephone, recording and voice broadcasting when using a sound card, and sending a fax. It is effective to execute work efficiently.

In addition, by using a button of the dial pad mounted by mounting the dial pad, it is possible to make a phone call even when the computer is turned off.

In addition, it is possible to increase the convenience of the user by selecting the mute button so that the other party cannot hear the caller.

In addition, there is a convenient effect that can be connected to the next phone again by checking the receiving environment status, such as fax or during a call through an automatic connection phone using a computer.

Claims (3)

Telephone line (TIP, RING), recording device for recording recorder (J2), headset (J1) including earphones and microphone, TIP coming from PSTN, rectifier circuit (100) for rectifying RING signal, and DTMF tone from outside Automatic connection with DTMF tone detection circuit 500 for operating the hook on / off, DTMF generation circuit 400 for converting into DTMF signal, and computer 800 for installing automatic telephone dialing program. In the phone, A ring signal output circuit 200 in which a bell is built in, informing a ringtone when an inbound call is received; A speech network circuit 300 connected to the recording device and the headset, for refining the voice signal received through the telephone line and amplifying the voice signal to the microphone and the earphone / speaker of the headset and transferring the voice signal to the headset or the recording device; And a RS232C circuit 700 for serial communication between the computer and the hook on / off and DTMF generator. The method of claim 1, wherein the DTMF tone detection circuit, A DTMF tone coming through a PSTN is connected to a terminal 10 of the DTMF tone detector (U5) via a speech network to check the line status signal from the PSTN. The speech network circuit of claim 1, wherein When the voice signal entered through the MIC is changed by a variable resistor connected to the outside, the transmission volume control circuit 310 for adjusting the size of the signal transmitted by the automatic transmission of the transmission inside the U7, and A receiving volume control circuit 320 for comparing the received signal with a bias and a reference and amplifying the received signal by an internal transmitter amplifying stage to adjust the received signal by using a variable resistor connected to the outside; The signal input from terminal 3 of the headset is input to terminals 6 and 7 of the U7, while the signal controlled by the receiving volume control circuit is input to terminal 3 of the headset, while from the terminal 3 of the headset. And a voice input / output circuit (330) for transmitting the input MIC signal by the ratio of the second transformer and outputting the input MIC signal to the recording apparatus.