KR100353483B1 - Method and Device of Telephoning and Audio using USB Signal for Internet Telephoning Service - Google Patents

Abstract

The present invention allows a user to receive paid and free telephone communication services through a web browser on the Internet, which is rapidly increasing in use by using a general telephone used at home, and can also be used as a sound card so that a sound card in a PC can be used. A phone using a USB port that enables not only gaming or two-way Internet voice communication, but also allows people who do not use the computer to receive free / free telecommunication services using the Internet just by dialing like a regular phone call. A connection attachment apparatus and a method of operating the same, the method comprising: a first step of determining whether there is a change in a hook on / off of a general telephone; A second step of determining whether the computer is in use when there is a change in the hook on / off of the telephone in the first step; A third step of determining whether the Internet telephone is available when the computer is in use in the second step; A fourth step of dialing a phone and talking to the other party if the Internet phone is available in the third step; A fifth step of determining whether the connection fails for a specified time or more when the Internet dial-up is not successful in the fourth step; A sixth step of displaying, on a display, a situation and a status of connection failure during a call when the connection fails for a specified time or more in the fifth step; A seventh step of automatically switching a switch to a public telephone network when the computer is not in use in the second step or when the Internet phone is not available in the third step; And an eighth step of switching a switch to a public telephone network in the seventh step to make a general telephone call.

Description

Dial-up additional device using Universal Serial Port and its operation method {Method and Device of Telephoning and Audio using USB Signal for Internet Telephoning Service}

The present invention relates to a computer communication system using a USB port, and more particularly, to receive a paid and free telephone communication service through a web browser on the Internet, which is rapidly increasing in use by using a general telephone used at home. It can also be used as a sound card to enable game or two-way Internet voice communication without a sound card in the PC. The present invention relates to a dial-up attachment using a USB port and a method of operating the same.

Recently, as the technology related to the main body of the computer is newly developed and its functions are gradually increased, it is possible to expand the number of various medium / low speed peripheral devices such as the main body of the computer and the modem, sound card, scanner, and game machine connected thereto. In order to provide a unified standard for signal transmission between each other, a universal serial bus (Universal Serial Bus) device has been developed and used.

When data is input from the control means built into the main body of the computer, the USB device transfers the input data to a medium / low speed peripheral device that requires it, and when data is input from the medium / low speed peripheral device. This is transmitted through a USB cable to the control means built into the computer main body.

On the other hand, in order to receive the Internet service in a general home, the Internet service provider (hereinafter referred to as ISP) using a point-to-point protocol (hereinafter referred to as PPP), which is a modem and software for accessing the Internet, is referred to as an ISP. Internet Protocol (hereinafter referred to as IP) address to be assigned to become a member of the Internet.

After registering with the Internet terminal in this manner, the Internet service can be used through the World Wide Web (hereinafter referred to as WWW) browser.

In addition, using the software for the Internet phone, such as an Internet phone, it is also possible to make voice calls over the Internet with other users on the Internet using the same software.

In addition, voice calls and data services (WWW, file transfer, etc.) using the above-described software for Internet phones can be used simultaneously where appropriate modem speeds (18.8 Kbps or higher) and appropriate Internet band services are guaranteed. For example, the following components are required.

That is, 486 or higher PC, modem, sound card, microphone, speaker, operating system such as Windows 95, PPP, Transmission Control Protocol / Internet Protocol (hereinafter referred to as TCP / IP), web browser, You need software for Internet phones.

Looking at the operation of the prior art by the above configuration as follows.

First, in order to access the Internet, the user's PC attempts to connect to the ISP's terminal server by running a modem. When the connection with the server's modem is established and data can be exchanged, PPP is activated to obtain an IP address from the server. As soon as the IP address is assigned, TCP / IP can be prepared to run, and various programs for the Internet can be run to connect with hosts (computers connected to the Internet) on the Internet.

Here, in order to receive the WWW service, a web browser such as Internet Explorer, Netscape Navigator, etc. is operated to access a desired web server and receive a desired document.

In this case, the protocol used is Hyper Text Transfer Protocol (HTTP), and may receive pictures, text, and various multimedia.

On the other hand, in order to make a voice call, an Internet phone program such as an Internet phone is operated to attempt to connect to a user who is currently connected to the Internet and is running the same program, so that the call can be divided when the other party answers.

In other words, for communication using the Internet, it is mostly composed of accessing a specific site using a PC, entering an ID and password, and then dialing a desired number by dialing a telephone number. We solve the analog I / O of transmission and reception by using.

In addition, small personal telephones sold under the nickname 'Sao-jung' are reduced in size, using ordinary telephones, and are lines for public switched telephone networks (hereinafter referred to as public telephone networks) around computers and users. Should be introduced.

However, the prior art as described above, there is an inconvenient problem that the user should always sit in front of the computer in order to perform a telephone communication using the Internet, and access to a specific paid / free site that provides a telephone communication through the keyboard operation, It is inconvenient to input the ID and password required by the specific site, and the microphone and audio input terminal and audio output or speaker terminal of the sound card of the PC main body are attached to a head with a built-in microphone and speaker. And other external devices such as MIDI or other devices that produce sound, and external amplifiers and speakers that output sound. If you're not good at using the internet, Yonghan and oil / difficult to use the free phone service points, in recent years there were issues that should be drawn to the general public telephone network is configured as ISDN, ADSL and HDSL, computer serial port and LAN way around a computer.

Accordingly, an object of the present invention is to use a general telephone used at home to receive paid and free telephony services through a web browser on the Internet, which is rapidly increasing in use these days, and to use it as a sound card as well. Even if you don't have a sound card, you can play games or two-way internet voice communication, and even if you can't use your computer well, you can get free / free telecommunication service using the Internet just by dialing like a regular phone call. The present invention provides a dial-up attachment using a USB port and a method of operating the same.

In addition, another object of the present invention is to automatically switch the line switch of the telephone connection unit to the public telephone network instead of the Internet when the computer is turned off to enable a general call immediately, by displaying the operating state of the telephone line through the LED The present invention provides a dial-up attachment device using a USB port and a method of operating the same.

1 is a block diagram showing a dial-up attachment device using a USB port according to the present invention,

2 is a flowchart illustrating a method of operating a dial-up attachment device using a USB port according to the present invention.

* Explanation of symbols for main parts of the drawings

10: DTU 11: microprocessor

12: DTMF Receiver 13: Digital Signal Processor

14: USB interface 15: PSTN controller

16: Signal Converter 17: Signal Amplifier

18: Telephone connector 19: Line connector (PSTN)

20: call line selection switch 21: display unit

26: microphone 27: speaker

30: regular telephone 50: computer

The technical means of the present invention for achieving the above object is a DTMF receiver for converting a dialing signal of DTMF tones input from a telephone connector connected to a general telephone with a binary signal, and the DTMF receiver is converted into binary in the DTMF receiver A digital signal processor for converting an input signal into a signal conforming to a USB standard, a USB interface for transferring a signal converted to a USB standard from a digital signal processor to a computer under the control of the microprocessor, and controlling the microprocessor A PSTN controller having a PSTN controller for receiving and processing a signal transmitted / received from a general telephone, and installed between a general telephone and a USB port of a computer, the apparatus for connecting a telephone to make an Internet telephone call with a telephone. Between the PSTN and the digital signal processor Signal converter for processing signals from the analog signal group is converted into a digital signal, a digital signal output from the digital signal processor is converted to an analog signal; A signal amplifier connected to the signal converter and amplifying input / output voice to support a sound card function; Voice input and output means connected to the signal amplifier to input and output voice from outside; A line connector to which the public telephone network is connected so that the general telephone can be connected to the public telephone network; A call line selection switch 20 for manually switching the general telephone to use the Internet or a public telephone network; And a display unit which displays the power supply state and the line operating state of the telephone connection unit to the outside according to the control signal of the microprocessor. The technical method of the present invention for achieving the above object is general. An internet telephony service method installed between a telephone and a USB port of a computer to enable an internet telephony call using a regular telephone, comprising: a first step of determining whether a hook on / off of a telephone is changed; A second step of determining whether the computer is in use when there is a change in the hook on / off of the telephone in the first step; A third step of determining whether the Internet telephone is available when the computer is in use in the second step; A fourth step of dialing a phone and talking to the other party if the Internet phone is available in the third step; A fifth step of determining whether the connection fails for a specified time or more when the Internet dial-up is not successful in the fourth step; A sixth step of displaying, on a display, a situation and a status of connection failure during a call when the connection fails for a specified time or more in the fifth step; A seventh step of automatically switching a switch to a public telephone network when the computer is not in use in the second step or when the Internet phone is not available in the third step; An eighth step of switching a line switch to a public telephone network in the seventh step to make a general telephone call; And a ninth step of outputting a sound signal output from a computer through a speaker when there is no change in on / off of the hook of the general telephone in the first step. With reference to the drawings will be described in more detail the present invention.

Dial-up attachment using a USB port according to the present invention, as shown in Figure 1, the microprocessor 11 for controlling the operation of the entire system, and binary dialing signal input from DTMF tone from the general telephone 30 DTMF receiver 12 for converting to binary and digital signal converted into binary from DTMF receiver 12 and converted into a signal conforming to USB standard under the control of the microprocessor 11 USB interface 14 for transmitting a signal converted in accordance with USB standard in the digital signal processor 13 to the computer 50 under the control of the signal processor 13 and the microprocessor 11, and the micro The PSTN controller 15 which processes the signal transmitted / received from the general telephone 30 under the control of the processor 11 and the analog signal processed by the PSTN controller 15 are digital signals. A signal converter 16 for converting the digital signal into an analog signal, and a signal or a speaker 27 input from the input / output means 25, that is, the microphone 26, in order to use the telephone connection unit 10 as a sound card. Using a signal amplifier 17 for amplifying the signal output to the telephone, a telephone connector 18 for connecting the telephone connection unit 10 with the telephone 30, and the telephone 30 as a public telephone network. A power supply state and an operating state of the line connector 19, a call line selection switch 20 for manually switching the general telephone 30 for use as an Internet telephone or a public telephone network, and the telephone connection unit 10; It is composed of a display unit 21 such as an LED device for displaying the outside.

Dial-up attachment using the USB port of the present invention configured as described above, the Internet phone call service using a regular phone with a built-in sound card function using a USB, without directly controlling the main body of the PC, separated from the local and PC It is to enable free / free communication service without controlling PC in long distance indoors.

First, a case for using an Internet phone with a sound card function will be described. After connecting the telephone connection unit 10, which is a device, with the user computer 50 using a connector, a general user intends to use it. The telephone 30 is connected to the telephone connector 18, and the public telephone network (PSTN) is connected to the line connector 19 when the telephone 30 is to be used as a general telephone rather than an internet telephone.

In the state in which both the general telephone 30 and the computer 50 are connected to the telephone connection unit 10 as described above, after the driving program of the telephone connection unit 10 is installed in the user computer 50, the telephone The telephone is used in the same manner as a method of dialing a general telephone by using the general telephone 30 connected to the connection unit 10.

On the other hand, when using a general public telephone network instead of an Internet phone, the call line selection switch 20 is used to switch to the general public telephone network side.

Referring to the signal flow diagram at this time, the dialing signal input by the general telephone 30 is a DTMF tone, which is converted into a binary in the DTMF receiver 12 and then controlled under the control of the microprocessor 11. 13) is converted into a signal that satisfies the USB standard, and transmitted to the computer 50 through the USB interface 14, thereby selecting a specific site selected by the control program of the telephone connection unit 10 in the computer 50. Dial by using.

Subsequently, the transmission / reception content of the general telephone 30 is signal-processed by the PSTN controller 15 and input to the signal converter 16. When the signal input to the signal converter 16 is a digital signal, the analog signal is reversed. When the signal input to the signal converter 16 is an analog signal, the signal is converted according to the signal input from the signal converter 16 for converting into a digital signal, and then the digital signal processor 13 meets the USB standard. The signal is processed and transmitted to the computer 50 by the USB interface 14.

After that, the batch program is controlled by the microprocessor 11 in the telephone connection unit 10.

When the telephone is terminated as described above, the microprocessor 11 recognizes the termination of the call and transfers it to the computer 50 based on the flow described above, and the telephone connection unit 10 in the computer 50. The program confirms this and ends the phone call.

Secondly, in the case of using as a sound card, after connecting the telephone connection unit 10 which is the device with the user computer 50 using a connector (keyed connector), the jack of the signal amplifier 17 (Jack) ) Connect the speaker 27 or the headset (Headset).

At this time, referring to the signal flow chart, the sound signal output from the computer 50 is converted into a digital value quantized by the digital signal processor 13 through the USB interface 14, and the signal is converted into the signal converter 16. The digital signal is converted into an analog signal, and amplified to an audible frequency by the signal amplifier 17, and then output to the speaker 27 through an audio output jack (not shown).

Third, look at the case to call using a public telephone network (PSTN), the telephone line flowed into the telephone connector 18 is directly connected to the jack of the line connector 19, and manually used to select the call line The switch 20 is selected according to the direction of the line switching switch.

Looking at the signal flow at this time, the line of the general telephone (30) is directly connected to the line connector 19 is possible to use the public telephone network.

Fourth, looking at the case that the power supply is not applied to the computer 50, the signal flows in the same manner as in the case of the case of 'calling using a public telephone network' described above, the telephone connection unit 10 When the power supply is not supplied to the computer 50, the internal circuit function is changed so that the public telephone network telephone line can be used automatically.

In this state, the display unit 21 serves to check the power supply state and the line operating state of the telephone connection unit 10 to the outside.

If the operation is shown in a flow chart as shown in Figure 2, the first process 100 for use as an Internet telephone service, and when not using the Internet telephone in the first process 100, using a public telephone network A second process 300 for making a phone call, a third process 500 for displaying an external connection when the internet phone connection fails in the first process 100, and the first process 100 ) Is used as sound card to output sound signal from computer to speaker or input signal from microphone as sound signal of computer when there is no change on hook on / off of telephone / receiver of general telephone It consists of a fourth process 400 to.

The first step (100) is a first step (101) of determining whether there is a change in the handset of the telephone / handset, and if there is a change in the handset of the telephone in the first step (101), the computer A second step (102) of determining whether a computer is in use; a third step (103) of checking program activation of a computer-side telephone access unit if the computer is in use in the second step (102); In step 103, after checking the program activation of the computer-side telephone access unit, the fourth step 104 of determining whether a result of checking the communication flag of the telephone access unit is in an available state, and in the fourth step 104, If the result of checking the communication flag of the telephone connection unit is in a usable state, the fifth step (105) of dialing a user number using the general phone (30) and the general phone (30) in the fifth step (105). Dial the user number you used After the DTMF tone is interpreted, the setting ID and password of the telephone connection unit are automatically assigned to the sixth step 106 to be connected to a specific site, and the setting ID and password of the telephone connection unit are changed in the sixth step 106. A seventh step (107) for inputting a phone number interpreted after being automatically connected to a specific site and a phone number for determining whether a successful connection has been made after inputting the phone number interpreted in the seventh step (107); In the eighth step 108, and in the eighth step 108, if the connection is successful, the ninth step 109 of displaying the progress status while the telephone communication using the internet is in progress, and the internet in the eighth step 108 While proceeding with the telephone communication using the to determine whether you are in use and proceeds to the tenth step 110 to proceed with the telephone communication using the Internet until the end of the telephone call.

The second process 300 is performed when the computer is not in use in the second step 102 or when the result of checking the communication flag of the telephone access unit in the fourth step 104 is not available. The first step 301 of switching the signal line to the telephone network by direct connection method, and the second step 302 of switching the signal line to the public telephone network by direct connection method to the public telephone network in the first step 301 Will be operated sequentially.

The third process 500 may include a first step 501 for determining whether a connection fails for a specified time when the connection is not successful in the eighth step 108, and the first step 501. In the case of a connection failure for a time, after outputting a signal for a situation such as no connection during a call, and outputting a signal for a situation such as no connection during a call in the second step 502 While the present invention has been described in detail only with respect to the specific examples described, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit and scope of the present invention. Naturally, the modifications belong to the appended claims.

Accordingly, the apparatus for dialing up a connection using a USB port according to the present invention provides an effect that satisfies the economic aspects of a user obtained by using an internet paid and free service using a PC, and also for those who cannot use the PC. It enables users to use internet paid / toll-free phone service, prevents repetitive waste of time in inputting ID and password when using internet phone, and solves the problem of location constraint that user must be in front of PC. It provides convenience of activities, eliminates the necessity of the sound card inside the PC which is necessary for using the conventional Internet phone, or can use the function for other purposes, even if there is no sound card inside the PC, audio such as game or communication There is an effect that can provide sound to the user.

In addition, when the computer power is turned off, the line switch of the telephone connection unit is automatically switched to the public telephone network instead of the Internet, so that regular calls can be made immediately, and the operation status of the telephone line is displayed through LEDs for visual confirmation by the user. There is one advantage to this.

Claims (5)

A microprocessor, a DTMF receiver for converting a DTMF tone dialing signal input from a telephone connector connected to a general telephone, into a binary signal, and a digital signal for converting a signal converted from binary to the signal conforming to the USB standard by the DTMF receiver. A signal processor, a USB interface for transferring a signal converted to a USB standard from a digital signal processor to a computer under the control of the microprocessor, and a signal transmitted / received from a general telephone under the control of the microprocessor. A dial-up attachment device having a PSTN controller and installed between a regular telephone and a USB port of a computer to enable Internet telephone calls with a regular telephone: A signal converter installed between the PSTN controller 15 and the digital signal processor 16 to convert an analog signal processed from the PSTN controller into a digital signal, and convert the digital signal output from the digital signal processor into an analog signal ( 16); A signal amplifier 17 connected to the signal converter and amplifying input / output voice to support a sound card function; Voice input / output means (25) connected to the signal amplifier for inputting and outputting voice from the outside; A line connector (19) to which the public telephone network is connected so that the general telephone (30) can be connected to a public telephone network; A call line selection switch 20 for manually switching the general telephone 30 to use the Internet or a public telephone network; And And a display unit (21) for displaying the power supply state and line operating state of the dial-up attachment device (10) to the outside according to the control signal of the microprocessor. In the Internet telephone service method, which is installed between the telephone and the USB port of the computer, the Internet telephone call can be made through the telephone. A first step of determining whether there is a change in the hook on / off of the telephone; A second step of determining whether the computer is in use when there is a change in the hook on / off of the telephone in the first step; A third step of determining whether the Internet telephone is available when the computer is in use in the second step; A fourth step of dialing the user number and the other party's telephone number and talking with the other party if the Internet telephone is available in the third step; A fifth step of determining whether the connection fails for a specified time or more when the Internet dial-up is not successful in the fourth step; A sixth step of displaying, on a display, a situation and a status of connection failure during a call when the connection fails for a specified time or more in the fifth step; A seventh step of automatically switching a switch to a public telephone network when the computer is not in use in the second step or when the Internet phone is not available in the third step; An eighth step of switching a switch to a public telephone network in the seventh step to make a general telephone call; And A ninth step of outputting a sound signal output from a computer through a speaker when there is no change in on / off of a hook of a general telephone in the first step; Operating method of a dial-up attachment using a USB port, characterized in that for performing. delete delete delete