KR200231796Y1 - Sound card for internet phone - Google Patents

Abstract

The present invention relates to a sound card capable of making an Internet phone with a trunk line telephone. More specifically, it is possible to switch between a trunk line telephone and an internet phone by operating a button of the telephone by connecting a trunk line of the telephone to a computer sound card. It modulates the tone signal of the telephone transmitted in the form of digital signal, so that general wired / wireless telephone can be used as an internet phone, and the sound that can be used as an international phone by eliminating roaming caused by the use of the internet phone. It's about the card.

According to the present invention, an Internet phone capable of making calls on the web and a mode conversion unit for switching a landline telephone connected to a public telephone exchange network are formed by operating a specific button installed in a wired / wireless telephone in an internal sound card capable of an internet phone. Low cost and convenient Internet phone can be easily used, and the voice card which separates the voice signal transmitted and received from the Internet phone at the input / output terminal of the sound card eliminates the chronic echo phenomenon caused by the Internet phone. A sound card capable of making an Internet phone is provided by a local telephone to enable the telephone.

Description

Sound card which is available for Internet phone with local telephone call {Sound card for internet phone}

The present invention relates to a sound card capable of making an Internet phone with a trunk line telephone. More specifically, it is possible to switch between a trunk line telephone and an internet phone by operating a button of the telephone by connecting a trunk line of the telephone to a computer sound card. By converting the tone signal of the telephone transmitted in the form of digital signal into a digital signal, general wired / wireless telephone can be used as an internet phone, and by removing the echo phenomena caused by the use of the internet phone, the sound that can be used as an international phone with a high quality telephone It's about the card.

In general, Internet phones, which enable communication through the Internet using high-speed communication networks due to the development of communication media, make cheap and convenient long-distance calls without using local telephones through public telephone exchange networks, such as international calls or long distance calls. By enabling this, the number of users is increasing rapidly. However, Internet phones such as this are used by local households or housewives who are not used to using computers, and use public telephones through public switched telephone networks, which are expensive. Therefore, in recent years, the above-mentioned problem can be solved by connecting the sound card of the computer with a built-in telephone circuit and the CO line phone with an earphone or an adapter by a switching switch to enable an Internet phone. There was a cumbersome problem of additionally installing various equipment such as an earphone or an adapter equipped with a changeover switch, and in particular, as a complicated wiring is connected to the back of the main body, many problems such as poor connection and spoiling aesthetics. In addition, since the voice signals transmitted and received through the microphone and the speaker are overlapped with each other, the Internet phone has a variety of discomforts such as echoing of the voice signal when the call is made with the wired / wireless phone, and the call quality is reduced. there was.

The purpose of the present invention is to solve such a problem in the related art, and it is possible to connect to an Internet phone and a public telephone exchange network that can make a call on the web by operating a specific button attached to a wired or wireless telephone inside the sound card capable of an Internet phone. Forming a mode conversion unit for switching a local telephone line to facilitate the use of cheap and convenient Internet phones with wired and wireless telephones, and by forming a voice playback unit to separate the voice signal transmitted and received to the Internet phone on the input and output terminal of the sound card The present invention provides a sound card that can be used as an Internet phone as a landline telephone that enables a high quality call by eliminating chronic echo phenomena caused by a phone.

Hereinafter will be described in detail based on the accompanying drawings.

1 is a block diagram showing the system flow of the present invention

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

1: wired and wireless telephone 2: public switched telephone network 3: Internet phone

4: CO line 5: speaker 6: microphone

100: sound card circuit 200: signal conversion unit 300: data transmission unit

400: mode switching unit 500: audio reproducing unit 510: signal amplifying unit

520: pulse conversion unit 530: signal control unit

In constructing a conventional sound card with a built-in sound card circuit 100 capable of connecting an Internet phone, a sound card capable of being an Internet phone with a trunk line telephone according to the present invention is a tone signal of the telephone 1 that is transmitted at a predetermined frequency. A signal converter 200 for modulating the digital signal into a digital signal; A data transmitter 300 for debugging the digital signal into an ASCII code recognizable by a computer, and transmitting the digital signal to an internet phone site on the web; Mode for converting the trunk line of the wired / wireless telephone 1 connected to the public telephone switching network 2 and sequentially converting to the Internet phone 3 and the trunk line telephone 4 according to the input of a specific button attached to the telephone 1. Switching unit 400; It is a combination of the voice reproducing unit 500 that separates the voice signal transmitted and received through the speaker 5 and receives the sign language signal to the phone 1 and transmits the call signal to the microphone 6 to block the echo phenomenon of the transmitted and received voice. Consists of.

Here, the voice reproducing unit 500 sequentially connects a signal amplifying unit 510 for amplifying a low voice signal to an output terminal of the speaker 5 and a pulse converter 520 for converting the amplified voice signal into a digital pulse signal. The signal controller 530 transmits the output signal of the speaker 5 to the phone 1 according to the output signal of the pulse converter 520, and transmits the talk signal of the phone 1 to the microphone 6. It consists of.

The present invention has a mode conversion unit 400 is connected to the trunk line of the wired or wireless telephone (1) connected to the public switched telephone network (2) to the sound card with a built-in sound card circuit 100 capable of Internet phone, Internet A voice reproducing unit 500 is formed to remove echo phenomena of voice signals transmitted and received by the phone, and the Internet phone 3 and the trunk line phone 4 are selectively used according to a simple operation of a specific button attached to the phone 1. It is possible to separate the voice signal transmitted and received to the Internet phone (3) through the speaker (5) to receive a sign signal to the telephone (1) and to transmit the signal to the microphone (6) to enable a good call As it will be described the operation according to a preferred embodiment of the present invention.

First, when the internet phone 3 is used as the wired / wireless telephone 1 connected to the mode converter 400, the signal converter 200 to which the tone signal transmitted from the telephone 1 is transmitted has an analog form of the tone signal. By modulating a predetermined frequency into a digital signal, the voice signal transmitted from the telephone 1 is transmitted to the data transmission unit 300 for debugging with ASCII code recognizable by a computer and simultaneously transmitted as an input signal of the mode conversion unit 400. do.

Therefore, the voice signal recognized by the ASCII code in the data transmission unit 300 is connected to the Internet phone site on the web through the sound card circuit 100 to enable the connection of the Internet phone 3, the mode conversion unit 400 When a specific button input of the wired / wireless telephone 1 is inputted, it is switched from the Internet phone 3 mode to the trunk line telephone 4 mode.

At this time, when the reception signal is input to the trunk line telephone 4 while the Internet phone 3 is in use, the reception sound can be heard through the speaker 5.

In this way, the low voice transmitted / received through the speaker 5 constituted by the voice reproducing unit 500 when receiving the contents of the call of the other party by the wired / wireless telephone 1 connected to the Internet phone site on the web through the sound card circuit 100. Signal signal is amplified by the signal amplification unit 510, the signal conversion unit 520 separates the audio signal according to the output signal converted into a digital pulse signal, the sign signal is received by the telephone (1) The transmission signal is transmitted to the microphone 6 to block the echo phenomenon of the transmission and reception voice, thereby enabling a good call.

As such, the present invention connects the trunk line of the wired / wireless telephone 1, which is connected to the Internet phone 3 and the public telephone switching network 2, to the mode conversion unit 400 inside the sound card. Generation and housewives can easily use the Internet phone (3) cheaply and conveniently with the button of the wired and wireless telephone (1), the voice playback unit 500 to remove the echo phenomenon of the voice signal transmitted and received by the Internet phone Formed to maintain a good call quality has many convenient effects on use.

Claims (2)

In constructing a conventional sound card with a built-in sound card circuit 100, which can be connected to the Internet phone, Signal conversion unit 200 for modulating the tone signal of the telephone (1) transmitted at a predetermined frequency into a digital signal; A data transmitter 300 for debugging the digital signal into an ASCII code recognizable by a computer, and transmitting the digital signal to an internet phone site on the web; Mode for converting the trunk line of the wired / wireless telephone 1 connected to the public telephone switching network 2 and sequentially converting to the Internet phone 3 and the trunk line telephone 4 according to the input of a specific button attached to the telephone 1. Switching unit 400; It is a combination of the voice reproducing unit 500 that separates the voice signal transmitted and received through the speaker 5 and receives the sign language signal to the phone 1 and transmits the call signal to the microphone 6 to block the echo phenomenon of the transmitted and received voice. Sound card that can be used as an Internet phone with a local telephone. The audio reproducing unit 500 of claim 1, wherein the voice reproducing unit 500 includes a signal amplifying unit 510 for amplifying low voice signals at an output terminal of the speaker 5, and a pulse converting unit for converting the amplified voice signals into digital pulse signals ( 520 in turn, and transmits the output signal of the speaker 5 to the telephone 1 according to the output signal of the pulse converter 520, and transmits the talk signal of the telephone 1 to the microphone 6 Sound card capable of an Internet phone with a trunk line telephone, characterized in that consisting of a signal controller 530.