KR100442677B1 - A phone system and its method using the network - Google Patents

Abstract

The present invention relates to a voice call system using a network system and a method thereof, and more particularly, using a network system composed of a plurality of computer terminals connected to a server via the Internet or a local area network (LAN). A voice call system and method for making a voice call using a call terminal connected to a computer terminal.

The voice call system according to the present invention comprises a computer terminal connected through a network with a server and a call terminal connected to the computer terminal, wherein the call terminal is a microphone, a speaker, a codec, a compression expander, a microcontroller, a communication module, and an interface port. Consists of

Description

Voice call system using network system and method thereof {A PHONE SYSTEM AND ITS METHOD USING THE NETWORK}

The present invention relates to a voice call system using a network system and a method thereof, and more particularly, using a network system composed of a plurality of computer terminals connected to a server via the Internet or a local area network (LAN). A voice call system and method for making a voice call using a call terminal connected to a computer terminal.

So-called Internet telephony is known as a prior art in connection with the present invention. The Internet telephone is a connection between the Internet network and a public telephone network so that a caller can make a call using a terminal connected to the Internet. The caller's terminal is connected to a server through the Internet, and the server is connected to a public telephone network again. Thus, Internet users and general telephone users can talk over the Internet and public telephone networks.

Conventional Internet telephones generally use a personal computer connected to the Internet to transmit and receive voices through a microphone and a speaker connected to the computer, and in recent years, not only to eliminate such inconvenience, but also more convenient and convenient to use. Various internet telephones and internet telephone methods have been proposed.

For example, an internet telephone includes a telephone which is connected to the Internet so as to transmit and receive voice data through the telephone itself without additionally operating a personal computer, or a telephone which has a switch means so as to use both a trunk line telephone and an internet telephone.

In addition, as an internet telephony method, a method for allowing a user to easily use an internet telephony by detecting a signal of turning on a microphone at an internet terminal and automatically executing an internet telephony program has been proposed.

In addition, a number of improved devices and methods have been proposed in connection with Internet telephony, which has the advantage that the Internet telephony is free of charge compared to public telephones. This is because it is possible.

However, there is a disadvantage in that the Internet phone can be sent but not received, and only the efforts to imitate the functions of the general phone are still available. Internet phones are not presented.

It is an object of the present invention to solve the above problems and to provide a voice call system and method using a more advanced and advanced network.

Specifically, providing a voice call system and method for transmitting and receiving voice data by transmitting and receiving voice data between terminals connected through a server to enable a user to make a phone call without passing through a public telephone network. The purpose.

Another object of the present invention is to provide a voice call system and method capable of transmitting a file data during a call to a call partner as well as a multi-party call.

1 is a configuration diagram showing an example of a system for practicing the present invention;

2 is a block diagram showing an example of a call terminal according to the present invention;

3 is a flowchart illustrating the flow of a voice call method according to the present invention;

4 is a flowchart illustrating a process of transmitting file data during a voice call according to the present invention;

5 is a flowchart illustrating a process of receiving file data during a voice call according to the present invention.

In order to achieve the above object, a voice call system using a network according to the present invention is a voice call system using a network system in which a server and a plurality of computer terminals are connected through a network, and the input voice is converted into an electrical analog signal. A microphone for converting, a codec for converting the analog signal into a digital signal and converting the received digital signal into an analog signal, and compressing the digital signal to be transmitted from the codec, and expanding the received digital signal. A compression extension unit for transmitting a codec, a speaker receiving the signal converted into an analog signal from the codec, amplifying and outputting the signal, a communication module for performing a process for transmitting and receiving a compressed voice digital signal with the computer terminal, and the computer. Connect to the terminal to send and receive signals And a communication terminal including a wired / wireless interface port and a microcontroller for controlling the flow of each signal and controlling the function of each device, wherein the computer terminal receives the voice data received from the communication terminal. And a storage medium for transmitting the voice data transmitted from the called computer terminal to the call terminal, and storing the voice data. The server includes a voice between the computer terminals. It is characterized by relaying data.

In the voice call method using the voice call system according to the present invention, when a calling party user selects a called party using the computer terminal, the computer terminal sends the called party identification ID and a call request signal to the server. And the server transmits a call signal to a computer terminal of the called party, and when the called user approves an incoming call, the calling party and the called computer terminal are inputted from the communication terminal connected to each other. The second step of transmitting the voice data to the server, and the voice data transmitted from the server to the communication terminal, and if the user wants to transmit the file data during the call, the computer terminal is selected file data Is encrypted with the voice data and converted to the other computer terminal via the server. And transmitting the voice data to the connected call terminal, and storing the file data in a storage device in the terminal. It is done.

Here, the user can select a plurality of called parties, and can apply a plurality of incoming parties, wherein the computer terminal and the server transmit and receive a plurality of voice data individually to enable a multi-party call. One is another feature of the present invention.

The computer terminal may store voice data transmitted and received according to a user's selection in a storage device and extract and play the voice data according to the user's selection.

Hereinafter, with reference to the accompanying drawings will be described in more detail.

1 is a block diagram showing a schematic configuration of a voice call system according to the present invention.

As shown in FIG. 1, in the voice call system according to the present invention, a server 10 and a plurality of computer terminals 20 are connected through a network, and each computer terminal 20 has a call terminal 30. Is made connected.

The server 10 may transmit and receive data with each computer terminal 20 through the Internet or a local area network. According to the present invention, the server 10 relays voice data and file data transmitted and received between the calling computer terminal 20 and the receiving computer terminal 20. In addition, the server 10 stores the ID registered for each computer terminal, and when receiving the ID of the receiver from the calling computer terminal, the server 10 is connected to the computer terminal corresponding to the ID.

The computer terminal 20 stores a program for executing the voice call method according to the present invention, and performs a function according to the program.

The call terminal 30 is connected to each computer terminal 20 to allow a user to input a real voice and to receive a voice input from the user.

A specific configuration of the call terminal 30 is illustrated in FIG. 2, and therefore, the detailed description will be made with reference to FIG. 2.

As shown in FIG. 2, the call terminal 30 in the present example includes a microphone 31, a codec 32, a compression expander 33, a speaker 34, a communication module 35, and an interface port 36. It is configured to include).

In the case of transmitting a voice, the microphone 31 performs a function of converting a user's voice into an electrical signal.

The voice signal input through the microphone 31 and converted into an electrical signal is converted into an analog signal into a digital signal by the codec 32.

The voice signal converted into a digital signal is compressed by the compression expander 33 and transmitted to the terminal 20 through the interface port 36 under the control of the communication module 35.

The interface port 36 may use, for example, an RS-232 port or wireless infrared communication.

On the contrary, in the case of receiving a voice, first, after receiving voice data through the interface port 36, the compressed signal 33 is decompressed.

At this time, since the decompressed voice signal is a digital signal, it is converted into an analog signal by the codec 32.

The audio signal converted into an analog signal is amplified by an amplifier (not shown) and then output through the speaker 34.

The microcontroller 37 controls the above elements, and controls to transmit and receive the voice according to the program.

Hereinafter, a voice call method for making a voice call using the voice call system according to the present invention will be described in detail.

When a user wants to make a voice call using the voice call system according to the present invention, it is preferable to first register the ID after connecting to the server 10 using the computer terminal 20. At this time, the registered ID is distributed to the user using the voice call system according to the present invention, and the registered ID is stored in the computer terminal of each user. Therefore, when a user inputs or selects an ID of a called party to be called in a computer terminal by a predetermined program, the computer terminal transmits the selected ID and a call request signal thereof to the server according to a pre-stored program. Then, the server transmits an incoming request signal to a computer terminal having an IP corresponding to the ID, and the called party's computer terminal notifies acoustically or visually that there is an incoming request. When the user of the called party authorizes the incoming call, the server relays the voice data of the calling party and the called party until the call ends. Here, if the user of the called party is absent or does not authorize the call due to other reasons, the computer terminal of the called party can store the calling party ID transmitted from the server. In addition, when the called party does not receive the call for a predetermined time, it is also possible to leave a voice message as in the function of the voice message of a general cellular phone. If the voice message has not been received by the called user for a predetermined time, the called computer terminal arbitrarily grants an incoming call to connect with the calling terminal, transmits the pre-stored voice announcement, and then receives the voice data received from the calling party. It is possible by storing.

Once the calling and called computer terminals are connected by a server via a network, a voice call is made according to the flow shown in FIG.

First, in the case of transmitting a voice, as shown in FIG. 3, first, when the voice of the user of the calling party or the called party is input, the microphone 31 converts it into an electrical signal. Then, the codec 32 receives the voice signal from the microphone 31, converts it into a digital signal, and then delivers the compressed signal to the compression expander 33. The compression expander 33 compresses it and transmits it to the terminal 20 through the interface port 36 by the communication module 35.

Next, in the case of receiving a voice, as shown in FIG. 3, first, when a digital voice signal is transmitted from the terminal 20, the compressed expander 33 extends it and delivers it to the codec 32. The codec 32 converts a digital audio signal into an analogue, and then amplifies the digital audio signal by an amplifier to reproduce and output the same to the speaker 34.

In the above, the process of voice transmission and reception at the call terminal has been described, but the terminal 20 communicates the voice signal transmitted and received with the call terminal with a server through a network, and the server transmits and receives the call signal with the counterpart terminal. .

At this time, the terminal 20 may store the voice data transmitted and received according to the user's selection in the storage device, which can be reproduced and listened according to the user's selection later.

The voice call method according to the present invention has evolved from simply talking only a voice, so that a file can be exchanged during a voice call. A process of exchanging file data during a call will be described with reference to FIGS. 4 and 5.

4 is a flowchart illustrating a process of transmitting a file during a call.

As shown in FIG. 4, when a calling party user inputs an ID of a called party using a computer terminal, the computer terminal transmits it to a server, and the server connects to a corresponding called computer terminal. In this way, voice data can be transmitted / received so that a call can be made. Since the process for this has already been described above, a detailed description will be omitted.

When a user makes a call without transmitting a file, the computer terminal encrypts and converts only voice data transmitted from the call terminal and transmits the converted voice data to the counterpart computer terminal via the server.

When the user wants to transfer a file during a call, the user selects a file stored in the user's own computer terminal. Then, the computer terminal encrypts and converts voice data and file data together and passes the server through the server. Send to computer terminal.

The reception of the file data will be described with reference to FIG. 5.

As described above, the side that receives the voice data and the file data transmitted to the counterpart first cancels the encryption and conversion of the voice data and the file data. Then, the voice data and the file data are separated, the voice data is transmitted to the call terminal for reproduction and output, and the file data is stored in the storage device.

4 and 5 also illustrate a flow relating to the storage of voice data, which may be stored in a storage device of a computer terminal according to a user's selection, or otherwise, are immediately transferred to a call terminal.

In the above, the present invention has been described with reference to the accompanying drawings by way of one embodiment of the invention, but various other modifications are possible.

In particular, although not described with reference to the drawings, the multi-party call can be enabled by using the voice call system according to the present invention. In a multi-party call, a plurality of called party IDs are selected during an initial call, thereby connecting to a plurality of called computer terminals to transmit and receive voice data, and playing back voice data received from each called computer terminal at a call terminal. The voice data to be transmitted may be transmitted to a plurality of destination computer terminals via a server.

Of course, it is also possible to newly establish a call with a third party during the call. It is also possible to connect by inputting a new called party ID using a computer terminal during a call, or multi-party call can be enabled by authorizing it when an incoming call comes during a call.

As described above, using the voice call system and the method using the network according to the present invention can obtain the following effects.

First, since it does not go through the public public telephone network, call charges are completely free, and unlike the conventional Internet telephone, it is possible to make calls as well as incoming calls.

Second, the voice call system according to the present invention is more effective when used in place of an extension telephone in a predetermined group in which a network is established. In particular, since the file can be transmitted / received during a call, the file can be used more conveniently, for example, when a file is to be explained while exchanging or when a file must be checked in real time. However, it is not necessarily valid only in place of an extension telephone, and the use of the Internet is not restricted in place.

Third, the multi-party call can be easily implemented.

Claims (4)

In a voice call system using a network system in which a server and a plurality of computer terminals are connected through a network, A microphone for converting input voice into an electrical analog signal, a codec for converting the analog signal into a digital signal and converting the received digital signal into an analog signal, and a digital signal to be transmitted from the codec; A process for transmitting / receiving a compressed digital signal from the codec to the codec, a speaker for receiving the signal converted into an analog signal from the codec, amplifying the amplified signal, and outputting the compressed digital signal to and from the computer terminal. A communication terminal including a communication module for performing a connection, a wired / wireless interface port for transmitting and receiving a signal by connecting to the computer terminal, and a microcontroller for controlling the flow of each signal and controlling a function of each element, The computer terminal transmits the voice data received from the call terminal to the server and transmits the voice data to the called computer terminal, transmits the voice data transmitted from the called computer terminal to the call terminal, and stores the voice data. A storage medium, The server is a voice call system using a network system, characterized in that for relaying the voice data between the computer terminal. In the voice call method using the voice call system according to claim 1, When the calling user selects the called party using the computer terminal, the computer terminal sends the called party identification ID and the call request signal to the server, and the server sends the calling signal to the computer terminal of the called party. With the first step, When the called user accepts an incoming call, the calling party and the called computer terminal transmit voice data input from the communication terminal connected to the server, and send the voice data transmitted from the server to the communication terminal. A second step of transmitting to During a call, when the user wants to transmit the file data, the computer terminal encrypts and converts the selected file data with the voice data and transmits the converted file data to the counterpart computer terminal via the server, and the counterpart computer terminal transmits the password. Canceling and separating the voice data and the file data, and transmitting the voice data to a connected call terminal, and storing the file data in a storage device in the terminal. The computer terminal stores the voice data transmitted and received according to the user's selection in a storage device of the calling party or the called party's computer, and extracts and reproduces the voice data according to the user's selection. Call method. The method of claim 2, The user selects a plurality of destinations and simultaneously applies a plurality of destinations, and the computer terminal and the server make a multi-party call by separately transmitting and processing a plurality of voice data. Voice call method. delete