KR100437442B1 - Apparatus and method for internet telephone - Google Patents

Abstract

The present invention is to provide an Internet telephone and a control method thereof, the present invention includes a communication unit for performing communication between the PC and the control unit; A voice processing unit which processes a voice signal from a PC or an interface unit under control of the controller and transmits the voice signal to a handset; A dial unit; A control unit which receives a dial signal of the dial unit and controls performance of an Internet telephone function and a general telephone function of the Internet telephone; A ring processing unit for detecting and processing a ring signal input from an exchange or a PC; A hook switch for detecting a current state of the handset and a ring of a PSTN network and informing a controller; A DTMF generator; A handset; An interface unit for converting a digital signal input from a PC and processed by the controller into an analog signal and outputting the signal from a handset; By including a memory unit for storing the unique serial number of the Internet phone, by using the serial number of the Internet phone, regular phone, wireless phone, mobile phone, PC to PHONE on the Internet, PC to PC operating system and email and various messaging services Integrated management in the Internet phone management server allows the user to selectively communicate with a desired device using a single phone and perform general phone functions.

Description

Internet phone and its control method {Apparatus and method for internet telephone}

The present invention relates to an internet telephone and a control method thereof, and in particular, a telephone, a wireless telephone, a mobile phone, a PC to PHONE, an operating system of a PC to PC, an e-mail and various messaging services on the Internet using a serial number of the internet telephone. The present invention relates to an internet telephone and a control method thereof, which are integratedly managed by a telephone management server so that a user can selectively communicate with a desired device using a single telephone and have a general telephone function.

In general, the Internet is a telecommunications network that spreads like spider webs around the world. It is a huge network of internationally connected networks of all kinds of countries around the world. So, it is possible to make an internet phone call using this internet.

Internet Phone is a program that allows you to enjoy international calls for local calls on the Internet. Since Internet access pays the cost of a local call, international calls over the Internet are also possible at a local call rate of 40 won per minute. Internet phones require at least 486 hardware, at least 8M of memory, at least 120M of free space on the hard disk, a modem with speeds of over 14.4Kbps, and a microphone and headphones to talk to the sound card and the other party. At this time, depending on whether the sound card is two-way or one-way, you can make a simultaneous call or a one-way call like a walkie-talkie.

In order to use such an internet telephone, a telephone for a network is conventionally used.

1 is a block diagram of a conventional telephone for a network.

As shown therein, a hook indicating a ring detector 4, a dialer 8, a voice processor 9, a speaker voice amplifier 11, a handset 19, a handset 19, and a connection state of a trunk line And a control unit 20 for constituting a telephone circuit for the PSTN at positions HS1 and HS2, and a control unit 20 for connecting the external computer main body 40 to the telephone unit 10. (20) is connected to a mode changeover switch (12) for switching the phone mode and the network mode, a mode display light emitting diode (13) indicating the display by the mode changeover, and a sound card (21) of an external computer; Mode switching switches 14 and 15 for controlling the audio signal connection path of the telephone unit 10, and monitoring and controlling the driving of the hook switch HS2, and the external computer main body 40 and the serial communication port ( 16) MPU (5) for transmitting and receiving through.

However, such a conventional telephone is integrated with the general telephone, wireless telephone, mobile phone, PC to PHONE on the Internet, PC to PC operating system, and e-mail and various messaging services in the Internet telephone management server. There was a disadvantage that can not be applied to selectively perform contact with the device.

Accordingly, the present invention has been proposed to solve the above-mentioned conventional problems, and an object of the present invention is to use a serial number of an Internet phone, a general phone, a wireless phone, a mobile phone, and a PC to PHONE, PC to PC on the Internet. Operating system, Internet phone, and various messaging services are integrated and managed by the Internet phone management server, so that users can selectively communicate with a desired device using a single phone and perform regular phone functions. To provide.

1 is a block diagram of a conventional telephone for a network,

2 is a block diagram of an Internet telephone connection apparatus to which the present invention is applied;

3 is a block diagram of an Internet telephone according to the present invention;

4 is a block diagram of an Internet telephone connected to the handset of FIG.

5 is a detailed circuit diagram of the communication unit in FIG.

FIG. 6 is a detailed circuit diagram of the sound processor of FIG. 3.

FIG. 7 is a detailed circuit diagram of the control unit, the dial unit, and the memory unit in FIG. 3;

8 is a detailed circuit diagram of the ring amplifier and the PC2PC ring in FIG.

9 is a detailed circuit diagram of the hook switch in FIG.

FIG. 10 is a detailed circuit diagram of an interface unit in FIG. 3.

FIG. 11 is a detailed circuit diagram of a usage display unit in FIG. 3;

12 is a flowchart illustrating a control method of the Internet telephone according to the present invention.

Explanation of symbols on the main parts of the drawings

100: Internet phone 110: communication unit

120: voice processing unit 130: dial unit

140: control unit 150: ring processing unit

151 ring detection unit 152 ring amplification unit

153: PC2PC Ring 154: Normal PSTN Ring

160: hook switch 170: DTMF generator

180: handset 190: interface unit

200: display unit 210: memory unit

Hereinafter, with reference to the accompanying drawings an embodiment according to the technical idea of the present invention, the Internet phone and its control method as follows.

2 is a block diagram of an Internet telephone connection apparatus to which the present invention is applied.

As shown therein, reference numeral 50 denotes a user client which is the computer system of the calling party, 51 denotes a computer in the user client 50, and 52 and 53 represent a general telephone function and wireless in the user client 50. An internet phone that performs a phone function. In addition, reference numeral 60 is a management server for managing an Internet phone, 61 is a server, 62 is a gateway connected to the other computer, public communication network, LAN, etc., 63 is connected to the gateway 62 and 1.5 A primary rate interface (PRI) that supports a primary speed interface of Mbps, 64 is a gatekeeper that manages the contents of a website, and 65 is a DB server connected to the gatekeeper 64 to store data. to be. Further, reference numeral 70 denotes a recipient client which is a computer system on the receiving side, 71 denotes a computer in the receiver client 70, and 72 and 73 perform a general telephone function and a wireless telephone function in the receiver client 30. Internet phone.

3 is a block diagram of an Internet telephone according to the present invention.

As shown therein, the communication unit 110 for performing communication between the PC (51) (71) and the control unit 140; A voice processor 120 for processing the voice signal from the PC 51, 71 or the interface unit 190 under the control of the controller 140 and transmitting the voice signal to the handset 180; A dial unit 130 for receiving a signal of a dial to be input by a user; A control unit 140 for receiving a dial signal of the dial unit 130 and controlling the execution of the Internet telephone function and the general telephone function of the Internet telephone 100; A ring processing unit (150) connected to the control unit (140) for detecting and processing a ring signal input from an exchange or a PC (51) (71); A hook switch 160 which detects a current state of the handset 180 and a ring of a PSTN network and informs the control unit 140; A DTMF generation unit 170 for transmitting data transmitted from the control unit 140 to a PSTN network as a dual tone multi frequency (DTMF) signal; A handset 180 for converting a voice of a user and transmitting the converted voice to the controller 180; An interface unit 190 for converting a digital signal input from the PC 51 or 71 into an analog signal and outputting the analog signal to the handset 180; The unique serial number of the Internet telephone 100 is stored, and the unique serial number of the Internet telephone 100 is changed to the PC 51 at the time of the interface with the PCs 51 and 71 under the control of the controller 140. And a memory unit 200 to be transmitted to 71.

Although not shown in the figure, the Internet telephone 100 includes a power supply unit for supplying power to the Internet telephone 100.

In the above, the Internet phone 100 receives a control signal from the control unit 140, and further includes a usage display unit 200 for displaying whether the Internet phone 100 is using an Internet phone or a general phone. It is configured to include.

The Internet phone 100, as shown in Figure 4, under the control of the control unit 140, RF (Radio Frequency) communication unit 210 for performing wireless communication with the handset 300; The modulator / demodulator 220 is connected to the RF communicator 210 to perform modulation and demodulation of a signal.

In FIG. 4, reference numeral 310 denotes an RF communication unit in the handset 300 performing the wireless telephone function, 320 is a modulation / demodulation unit, 330 is a control unit, 340 is a dial unit, 350 is a handset, and 360 is a ring. It is a speaker.

As shown in FIG. 6, the voice processing unit 120 allows the signal input from the PC 51 or 71 to be connected to the handset of the handset 180 according to the control signal of the control unit 140. A first switch 121; A second switch 122 for connecting a signal input from the PC (51) (71) to the handset of the handset (180) according to the control signal of the controller (140); And a telephone voice processor 123 for processing the signal input from the first switch 121 and converting the signal into a telephone voice and outputting it to the handset of the handset 180.

In the above, the control unit 140 determines the state of the hook switch 160 to determine whether the receiver is currently held or in a standby state, and when the hook switch 160 is lifted, the input of the dial unit 130 is made. Control the receiving, and transmits the received dial to the PC 51 (71) through the communication unit 110 in the case of an Internet phone according to the state of the selection terminal, and transmits the data to the DTMF generator (in the case of a normal phone). 170).

The ring processing unit 150, the ring detection unit 151 for detecting the ring is transmitted from the exchange; A ring amplifier unit 152 for receiving and amplifying a ring signal through the control unit 140 when an Internet telephone connection request is received from the PC 51 or 71; A PC2PC ring 153 which receives the ring signal amplified by the ring amplifier 152 and notifies the user with a preset sound that an Internet telephone connection request has been received; It comprises a general PSTN ring 154 to receive a signal detected by the ring detector 151 to inform the user in a predetermined sound that a general telephone connection request from the general PSTN network.

In the interface unit 190, as shown in FIG. 10, the controller 140 to reduce the electrical interaction between the signal input through the PC (51) (71) and the signal input through the general PSTN network. A photocoupler 191 for receiving and processing the signal of the signal; And a digital-analog converter 192 for converting the digital signal input from the photocoupler into an analog signal and transmitting the analog signal to the voice processor 120.

12 is a flowchart illustrating a control method of the Internet telephone according to the present invention.

As shown in the figure, after the power-on of the Internet telephone 100 is logged on to the PCs 51 and 71, the PC 51 and 71 are informed that the Internet telephone 100 is turned on, and the Internet telephone 100 is turned on. Transmitting the serial number to the PC (51) (71) and then determining whether the handset (300) is on (ST11 to ST13); If the handset (300) is not on, determining whether a ring has been transmitted from the PC (51) (71) (ST14); If a ring is detected from the PC (51) (71), ringing the PC2PC ring (153), performing a kiss scan, and determining which mode the switch is in (ST15 to ST17); If the switch is in the PSTN mode, transmitting data to the DTMF generator 170 to perform a general telephone call (ST18); If the switch is in the Internet telephony mode, a step (ST19) is performed to transmit the data to the PC 51 (71) to perform an internet telephony.

The operation of the Internet telephone and the control method according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, Figure 3 is a block diagram of an Internet telephone according to the present invention.

Thus, although not shown in the drawing, the power supply unit supplies the power supplied from the power supply adapter at a constant voltage.

In the communication unit 110, communication between the PCs 51 and 71 and the control unit 140 is performed.

This communication unit 110 is shown in detail in FIG.

Thus, the signal input from the RXD (P3.0) terminal of the control unit 140 is received through the R2OUT terminal, and transmitted to the PC 51 (71) through the T1OUT terminal. In addition, the signal received from the PC (51) (71) is input via the R2IN terminal, and is input to the TXD (P3.1) terminal of the control unit 140 through the T2IN terminal.

The voice processor 120 processes the voice signal from the PC 51, 71 or the interface unit 190 under the control of the controller 140, and transmits the voice signal to the handset 180. Is shown.

In addition, the voice processor 120 includes first and second switches 121 and 122 and a telephone voice processor 123. The first switch 121 allows the signal input from the PC 51, 71 to be connected to the handset of the handset 180 according to the control signal of the controller 140. The second switch 122 allows the signal input from the PC 51, 71 to be connected to the handset of the handset 180 according to the control signal of the controller 140. The telephone voice processor 123 processes the signal input from the first switch 121, converts the signal into a telephone voice, and outputs it to the handset of the handset 180.

Thus, the first and second switches 121 and 122 are connected to the sound card of the PCs 51 and 71 through jumpers.

One terminal of the jumper is connected to 1NO, which is the eighth terminal of the first switch 121, and the second terminal of the jumper is connected to 2NO, which is the nineth terminal. In addition, the three terminals of the jumper are connected to 2NO, which is the 9th terminal of the second switch 122, and the 4 terminals of the jumper are connected to 1NO, which is the 8th terminal.

In addition, the first switch 121 receives the MICRL which is a control signal output from the P1.2 terminal of the controller 140 through the 16th terminal. The second switch 122 receives the SPRL, which is a control signal output from the P1.1 terminal of the controller 140, through the 16th terminal.

The first switch 121 outputs an ASP + signal through which the signal input from the PC 51 or 71 is connected to the handset of the handset 180 through the 11th terminal according to the MICRL control signal of the controller 140.

The second switch 122 outputs an AMIC + signal that allows a signal input from the PC 51 or 71 to be connected to the handset of the handset 180 through the 11th terminal according to the SPRL control signal of the controller 140.

The telephone voice processor 123 receives the ASP + signal output from the first switch 121 through the RXO terminal and outputs it to the handset of the handset 180 so that a voice telephone call can be performed.

7 is a detailed circuit diagram of the control unit, the dial unit, and the memory unit 200 in FIG. 3.

Thus, the dial unit 130 receives a signal of a dial to be input by the user, and the controller 140 receives a dial signal of the dial unit 130 and performs the Internet telephone function and the general telephone function of the Internet telephone 100. To control.

Here, the control unit 140 determines the state of the hook switch 160 to determine whether the user is holding the handset or the user is not currently holding the handset. In addition, when the hook switch 160 is lifted, the input through the dial 130 is enabled. The input dial is judged according to the state of the selection terminal. Thus, it is possible to distinguish whether the selection terminal is an internet phone or a regular phone. In the case of an Internet phone, data is transmitted to the PCs 51 and 71 through the communication unit 110 so that the Internet phone can be performed. In the case of a normal phone, the data is controlled to be transmitted to the DTMF generator 170 so that the general phone is performed through the PSTN network.

In FIG. 7, a signal input from the dial unit 130 is transmitted through P0.0, P0.1, P0.2, P0.3 and 02.0, P2.1, P2.1, and P2.2 terminals of the controller 140. Receive input.

The hook switch is digitally controlled by outputting the HSRL signal which is a hook switch control signal through the P1.0 terminal.

The SPRL control signal and the MICRL control signal output through the P1.1 and P1.2 terminals control the first and second switches 121 and 122.

The LED1 and LED2 control signals output through the P1.3 and P1.4 terminals control the LED lighting of the use display unit 200 of FIG. 11 to indicate whether the current connection state is an internet telephone state or a general telephone state. In addition, the signal output from the reset terminal controls the use display unit 200.

The CS, DA, and CK signals output through P1.5, P1.6, and P1.7, respectively, control the interface unit 190 of FIG. 10 so that conversion of digital signals and analog signals is performed.

RXD and TXD of the P3.0 and P3.1 terminals are connected to the communication unit 110 to perform data transmission / reception with the PCs 51 and 71.

The HSDET control signal output from INT0 of the P3.2 terminal is input as the control signal of the ring amplifier 152 of FIG.

In addition, the memory unit 200 may be configured as an EEPROM having a capacity of 1K bit, and in this case, up to 64 words can be electrically written and erased.

Therefore, the memory unit 200 stores a unique serial number at the time of production. Then, upon receiving the request of the PC 51 (71) during the interface with the PC 51 (71), the serial number is passed to the PC (51) (71) to know that the device is unique even if the position of the device is changed. To make it possible.

The interface between the control unit 140 and the memory unit 200 uses a serial method, and the ASK of the terminal 1 is transmitted together with data from the control unit 140 for synchronization.

Therefore, when the high signal is input to the ACS (CS) of the memory unit 200, the chip is selected.

In ASK (SK), a clock for synchronization is generated. ADI (DI) outputs desired address when inputting data, storing and reading necessary data. In case of ADO (DO), when data is output from EEPROM, it is output through ADO pin.

On the other hand, the ring processing unit 150 is connected to the control unit 140 detects and processes the ring signal input from the exchange or PC (51) (71).

The ring processing unit 150 includes a ring detector 151, a ring amplifier 152, a PC2PC ring 153, and a general PSTN ring 154.

The ring detection unit 151 is connected to a general PSTN network when the Internet telephone 100 is in a standby state, and detects this when a ring is transmitted from an exchange so that the general PSTN ring may ring.

The ring amplifier 152 transmits a predetermined signal to the PC2PC ring 153 to inform the user when the controller 140 receives a connection request of an Internet phone from the PC 51 or 71. Thus, if there is an internet telephone connection request from the PC (51) (71), it receives the ring signal through the control unit 140 and amplifies. That is, referring to FIG. 8, the HSDET signal output from INT0, which is the P3.2 terminal of the controller 140, is inputted to the input terminal of the amplifier and amplified so that the PC2PC ring 153 may ring.

The PC2PC ring 153 receives the ring signal amplified by the ring amplifier 152 and notifies the user with a preset sound that an internet telephone connection request has been received.

The general PSTN ring 154 receives a signal detected by the ring detector 151 and notifies the user with a preset sound that a general telephone connection request has been received from the general PSTN network.

As such, when using the inter-circuit control method, the present invention uses a ring method having two speakers. In other words, the ringtones of a regular PSTN phone and a PC2PC are divided into two speakers. Among them, the ring method of PC2PC is as follows.

That is, the controller 140 waiting on the circuit receives a certain signal from the PC. Then, the controller 140 determines whether the received signal is a ring occurrence. When the ring is generated, the BZ signal is output through the P3.3 terminal of the controller 140 to output a predetermined frequency intermittently. The intermittent frequency is amplified by the ring amplifier 152 and generated as a sound through the PC2PC ring 153. In this case, the magnitude of the signal generated using the resistor of FIG. 8 may be manipulated.

The hook switch 160 detects the current state of the handset 180 and the ring of the PSTN network and informs the controller 140. In addition, the control of the hook switch 160 is performed by the digital signal from the controller 140. That is, as shown in FIG. 9, the control of the hook switch 160 is performed by receiving the HSRL control signal output from the P1.0 terminal, which is the first pin of the controller 140.

The DTMF generation unit 170 converts the data transmitted from the control unit 140 into a dual tone multi frequency (DTMF) signal and transmits the data to the PSTN network.

The handset 180 converts a user's voice and transmits it to the controller 180, converts a signal transmitted through the controller 180, and outputs the converted signal to the user.

The interface unit 190 converts the digital signal input from the PC 51 and 71 and processed by the controller 140 into an analog signal to be output from the handset 180.

This interface 190 is shown in detail in FIG. 10.

Thus, the interface unit 190 includes a photocoupler 191 and a digital-to-analog converter 192. The photocoupler 191 receives and processes a signal from the controller 140 to reduce electrical interaction between the signal input through the PC 51 and 71 and the signal input through the general PSTN network, and digital-analog. The converter 192 converts the digital signal input from the photocoupler 191 into an analog signal and transmits the analog signal to the voice processor 120. Then, the voice processing unit 120 converts the transmitted signal into voice and outputs it to the user through the handset 180.

In the present invention, the analog circuit and the digital circuit are distinguished when performing the control between circuits. In other words, there is an analog circuit of a general telephone that processes a 68V AC signal and a digital circuit that processes a 5V DC signal. Therefore, because the interference between the analog circuit and the digital circuit can affect each other's sound, the circuit is separated and driven in the following way.

One is the division of sound, and the other is to use photo coupler 191.

So to distinguish between sounds uses relays. The handset 180 requires four wires: a signal of the handset, a ground, a signal of the handset, and a ground. Thus, the first switch 121 of the voice processing unit 120 connects the speaker terminals of the sound cards of the PCs 51 and 71 through the jumper 1, and the + and-terminals of the ASP output from the phone voice processing unit 123. Connect it. At this time, when the current of the relay itself is cut off, the ASP part and the receiver are connected. In addition, by receiving the MCRL control signal output from the control unit 140, the control unit 140 determines whether to connect the handset to the speaker terminal of the PC sound card of the jumper 1 or the ASP portion and the handset.

In this same manner, the control unit 140 determines whether the output signal from the transmitter is to be transmitted to the PC through the jumper 1 or to the telephone voice processor 123 through the AMIC of the second switch 122. Determined by Thus, the control unit 140 is connected to the relay through the SPRL control signal input to the second switch 122 and transmitted.

In addition, using the photocoupler 191 is as follows.

That is, when the user's selection is a general telephone, the dial is pushed and sensed by the controller 140 and transferred to the digital-analog converter 192. In this case, since the digital-to-analog converter 192 uses power input through a general telephone line and the controller 140 uses 5V adapter power, the digital-to-analog converter 192 and the controller 140 must be physically separated. The electrical mutual influence can be reduced. Therefore, the photo coupler 191 is used.

There are three signals connected to the controller 140 and the digital-analog converter 192 through the photocoupler 191 such as CS, DA, and CK.

The CS signal is a selection signal of the digital-analog converter 192. Therefore, the digital-to-analog converter 192 operates only when the CS signal is operated high.

The DA signal converts the key value input through the dial into binary binary data and delivers the NON parity bit method by the serial transmission method.

The CK signal is a clock signal for synchronizing when the controller 140 transmits the DA to the digital-to-analog converter 192. This may take a negative edge triggering scheme and is polled down when the DA signal is transmitted one bit.

In addition, the photocoupler 191 physically separates two parts in transmitting a signal input to the A1 terminal to the C1 terminal, and internally serves as a photo transistor so that data and signals are transmitted without mutual interference of circuits.

As illustrated in FIG. 11, the usage display unit 200 receives a control signal from the control unit 140 and displays whether the Internet telephone 100 is using an Internet telephone or a general telephone. That is, by receiving the LED1 and LED2 control signals output from the control unit 140 so that the LED is turned on, the current connection mode of the Internet phone 100 is visually displayed to the user.

And when connected to a wireless telephone, the Internet telephone 100 is configured to further include an RF communication unit 210 and the modulation / demodulation unit 220. The RF communication unit 210 is controlled by the control unit 140 and performs wireless communication with the handset 300. The modulator / demodulator 220 is connected to the RF communicator 210 to perform modulation and demodulation of a signal transmitted between the main body of the Internet phone 100 and the handset 300.

Meanwhile, a method of controlling the Internet telephone 100 will be described with reference to FIG. 12.

First, the Internet phone 100 is turned on. Then, the PC 51 and 71 are logged on to inform the PC 51 and 71 that the Internet phone 100 is turned on.

In this way, the on state of the Internet telephone 100 is notified to the PCs 51 and 71, and the serial number of the Internet telephone 100 is transmitted to the PCs 51 and 71.

And it is determined whether the handset 300 is on.

If handset 300 is not on, it is determined whether ring has been transmitted from PC 51 (71).

Thus, if a ring is detected from the PCs 51 and 71, the PC2PC ring 153 rings.

Here, the present invention uses a ring method having two speakers when using the inter-circuit control method. In other words, the ringtones of a regular PSTN phone and a PC2PC are divided into two speakers. In the ring method of the PC2PC, when the control unit 140, which is waiting on the circuit, receives a predetermined signal from the PC and receives the ring generation signal, it notifies the ring amplifier 152 of the ring amplifier 152. That is, the BZ signal is output through the P3.3 terminal of the controller 140 to output a predetermined frequency intermittently, and the intermittent frequency is amplified by the ring amplifier 152 and generated as a sound through the PC2PC ring 153. do. At this time, the magnitude of the generated signal can be manipulated.

Then perform a kiss can. The kisscan is a method in which the controller 140 reads key values input to the dial 130. Therefore, a low signal and a high signal are periodically generated through the P2.0 to P2.3 terminals of the controller 140. In addition, the terminals from P0.0 to P0.3 of the controller 140 are normally connected high, and if a specific value is pressed on the dial 130 connected through the matrix, the By checking the output terminal and the input terminal of P0, it is determined which key value is pressed by the dial unit 130. The scanned key value is transmitted to the general telephone network or the PC 51 or 71 by identifying the current user's selection.

Perform this kisscan and determine which mode the switch is in.

When the switch is in the PSTN mode, the data is transmitted to the DTMF generator 170 so that a general telephone call is performed.

If the switch is in the Internet telephony mode, the data is transferred to the PC 51 (71) to allow an Internet telephony to be performed.

As described above, the present invention uses a serial number of an Internet phone to integrate and manage a general phone, a wireless phone, a mobile phone, a PC to PHONE on the Internet, an operating system of a PC to PC, and an e-mail and various messaging services on an Internet phone management server. You can use your phone to selectively communicate with the device you want and perform regular phone functions.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, the Internet phone according to the present invention and its control method are based on the serial number of the Internet phone, general phone, wireless phone, mobile phone, PC to PHONE on the Internet, PC to PC operating system and email and various messaging The service is integrated and managed by the Internet phone management server, so that a user can selectively communicate with a desired device using a single phone and perform general phone functions.

In addition, the present invention is a circuit control method between the general PSTN telephone and PC2PC phone ringing to distinguish two speakers, perform a digital kiss can, and control the hook switch digitally, using a photocoupler By separating the analog and digital circuits, the sound interference between the two circuits is prevented, and the Internet telephone and the ordinary telephone can be used in a regular telephone or a cordless telephone.

Claims (8)

A communication unit for performing communication between the PC and the control unit; A voice processing unit which processes the voice signal from the PC or the interface unit and transmits the voice signal to the handset under the control of the controller; A dial unit which receives a signal of a dial to be input by a user; A control unit which receives a dial signal of the dial unit and controls the execution of an Internet telephone function and a general telephone function of the Internet telephone; A ring processing unit connected to the control unit for detecting and processing a ring signal input from an exchange or a PC; A hook switch for detecting a current state of the handset and a ring of a PSTN network and informing the controller; A DTMF generation unit for transmitting data transmitted from the control unit to a PSTN network as a DTMF signal; A handset which converts a user's voice and transmits it to the controller; An interface unit for converting a digital signal input from a PC and processed by the controller into an analog signal and outputting the analog signal from the handset; And a memory unit configured to store a unique serial number of the Internet phone and to transmit the unique serial number of the Internet phone to the PC when interfacing with a PC under the control of the controller. The method of claim 1, wherein the Internet telephone, And a usage display unit which receives the control signal from the control unit and indicates whether the Internet telephone is using an internet telephone or a general telephone. The method of claim 1, wherein the Internet telephone, An RF communication unit under the control of the controller and performing wireless communication with the handset; And an modulation / demodulation unit connected to the RF communication unit to perform modulation and demodulation of a signal. The method of claim 1, wherein the voice processing unit, A first switch for connecting a signal input from the PC to a handset of the handset according to a control signal of the controller; A second switch for connecting the signal input from the PC to the handset of the handset according to the control signal of the controller; And a telephone voice processor for processing the signal input from the first switch, converting the signal into a telephone voice, and outputting the telephone voice to the handset of the handset. The method of claim 1, wherein the control unit, Determine the state of the hook switch to determine whether the phone is currently in the handset or standby state, and when the hook switch is lifted to control to receive the input of the dial unit, and when the dial is received according to the state of the selection terminal Internet telephone The Internet phone, characterized in that for transmitting the data to the PC via the communication unit, and in the case of a regular telephone to transmit the data to the DTMF generator. The method of claim 1, wherein the ring processing unit, A ring detector for detecting a ring when the ring is transmitted from the exchange; A ring amplifier unit for receiving and amplifying a ring signal through the control unit when an internet telephone connection request is received from the PC; A PC2PC ring that receives the ring signal amplified by the ring amplifier and notifies the user with a preset sound that an internet telephone connection request is received; And a general PSTN ring configured to receive a signal detected by the ring detector and inform the user with a preset sound that a general telephone connection request has been received from a general PSTN network. The method of claim 1, wherein the interface unit, A photocoupler that receives and processes the signal of the controller so as to reduce electrical interaction between the signal input through the PC and the signal input through the general PSTN network; And a digital-to-analog converter for converting the digital signal input from the photocoupler into an analog signal and transmitting the analog signal to the voice processor. After powering on the Internet telephone, logging on to the PC to inform the PC that the Internet telephone is on, transmitting the serial number of the Internet telephone to the PC and determining whether the handset is on; If the handset is not on, determining if a ring has been transmitted from a PC; If a ring is detected from the PC, ringing a PC2PC ring, performing a kisscan, and determining which mode the switch is in; If the switch is in the PSTN mode, transmitting data to a DTMF generator to perform a general telephone call; And if the switch is in the Internet telephone mode, transmitting the data to a PC to perform an Internet telephone call.