KR20000073823A - Pc card for transmitting voice and data and a transmission system using thereof - Google Patents

Abstract

PURPOSE: A PC card for transmitting voice and data signals and a transmission system using the same are provided which simultaneously transmits voice and data through telephone lines which have been installed in buildings. CONSTITUTION: A PC card for transmitting voice and data signals includes a first communication port(10) which is connected to a telephone line previously installed in a building and serves as an input/output interface of the voice and data signals, and a second communication port(20) which is connected to a telephone and serves as an input/output interface of voice signals. The PC card also has a signal mixing/separating part(40) which separates the voice signal and data signal from each other to send the voice signal to the telephone through the second communication port and deliver the data signal to a PCI bus of a computer when the voice and data signals are received from the first communication port, and mixes the voice and data signals with each other to transmit the mixed signal to the first communication port when the voice signal and data signal are respectively received from the telephone and the PCI bus.

Description

PC card for transmitting voice and data signal and transmission system using same {PC CARD FOR TRANSMITTING VOICE AND DATA AND A TRANSMISSION SYSTEM USING THEREOF}

The present invention relates to a PC adapter card for voice and data transmission and a transmission system using the same. More particularly, the present invention relates to a network adapter for enabling simultaneous network function for data transmission together with voice transmission function using a telephone line. An adapter card for a computer and a transmission system using the same.

Recently, many telephone lines have been used as one method for providing digital communication services such as the Internet. However, in order to be provided with such data communication, there has been a problem that a user must give up a voice transmission function such as a telephone call during at least data communication.

To solve this problem, a technology for providing a function of simultaneously transmitting a voice signal and a data signal through a single network has been developed. As an example of such technology, a function of digital connection between a user and a network interface is provided. One integrated service network is the ISDN (Integrated Services Digital Network). However, there is a problem that the installation cost is expensive to install such an ISDN network in each home.

Recently, data-only networks such as optical cables have been installed around high-density areas such as apartments. In the areas where these data-only networks are installed, data communication is performed through data-only networks, and voice communication is performed using existing telephone networks. However, in order to perform data communication in such a data-only network, there is a problem in that the cost increases because a separate cable and a separate card must be installed in the computer to connect these data networks and computers in each home.

The technical problem to be achieved by the present invention is to solve the above problems, to provide a voice and data transmission card and a voice and data transmission system for transmitting voice and data at the same time through the telephone line already installed in the building. will be.

1 is a block diagram of a PC card for voice and data signal transmission according to an embodiment of the present invention.

2 is a configuration diagram of a voice and data signal transmission system according to an exemplary embodiment of the present invention.

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

10, 20, 30: communication port 30: PCI interface

40: Signal Mixer / Separator 42: Low Pass Filter (LPF)

44: band pass filter (BPF) 50: Ethernet control unit

100: telephone line termination 200: computer

300: telephone 400: controller

500: Ethernet switching hub

600: Main Distributing Frame (MDF)

46: mixer

Card for transmitting voice and data signals according to the characteristics of the present invention for achieving the above object

A first communication port connected to a telephone line already installed in the building and serving as an input / output interface between a voice signal and a data signal;

A second communication port connected to a telephone and serving as an input / output interface of a voice signal;

When receiving voice and data signals from the first communication port, the voice and data signals are respectively separated, and the voice signals are transmitted to the telephone through the second port, and the data signals are transmitted to the PCI bus of the computer. When receiving a voice signal and a data signal from the PCI bus of the telephone and the computer, respectively, the voice and data signals are mixed and transmitted to the first communication port.

In addition, the card for transmitting voice and data signals according to an aspect of the present invention

An Ethernet controller configured to control data communication by receiving data signals received from the signal mixer / separator; A PCI interface coupled to the PCI bus of the Ethernet controller and the computer, the PCI interface for interfacing the Ethernet controller with the PCI bus; A third communication device connected to an external computer via a cable and configured to transmit a data signal received from the signal mixer / separator to an external computer or a data signal received from the external computer to the signal mixer / separator The port may further include.

Here, the signal mixing / separation unit

A low pass filter for extracting a voice signal that is a low frequency component among voice and data signals received through the first port; And a band pass filter for extracting a data signal from the voice and data signals received through the first port. In this case, it is preferable that the low pass filter extracts low frequency components of 0 to 5 kHz or less, and the band pass filter extracts band frequency components of 3 MHz to 15 MHz or less.

On the other hand, the voice and data signal transmission system according to a feature of the present invention

One or more telephone line terminations for transmitting voice and data signals;

A first communication port connected to the telephone line termination and serving as an input / output interface of a voice signal and a data signal, a second communication port connected to a telephone and serving as an input / output interface of a voice signal, and a voice from the first communication port And when receiving a data signal, separate the voice and data signals, respectively, to transmit the voice signal to the telephone through the second port, and to transmit the data signal to the PCI bus of the computer, and the PCI bus of the telephone and the computer. In the case of receiving a voice signal and a data signal from each of the voice line and the data transmission card including a signal mixing / separation unit for mixing the voice and data signals and transmitting the signal to the first communication port, respectively. One or more computers connected to each other;

A control device that separates voice and data signals received through the first communication port and the telephone line termination, and mixes the voice and data signals respectively received from an external telephone network and a data network to the telephone line termination;

An Ethernet switching hub for transmitting a data signal separated by the control device to an external data network or for transmitting a data signal transmitted from an external data network to the control device; And

And a main main board for providing a voice signal from an external telephone network to the control device and for providing a voice signal provided from the control device to the telephone switching network.

Here, the control device

A low pass filter for extracting a voice signal, which is a low frequency component, from the voice and data signals received through the telephone line termination part and transmitting the voice signal to the main main board in the premises; And a band pass filter for extracting a data signal from the voice and data signals received through the telephone line terminal and transmitting the extracted data signal to the Ethernet switching hub.

Then, embodiments of the present invention will be described so that those skilled in the art can easily carry out the present invention.

1 is a block diagram of a PC card for voice and data transmission according to an embodiment of the present invention.

As shown in FIG. 1, a PC card according to an embodiment of the present invention includes a first communication port 10 connected to an end of a general telephone line in a building, a second communication port 20 connected to a telephone, and a computer. PCI interface 30 for interfacing with a peripheral component interface (PCI) bus on the main board, signal mixing / separation unit 40 for mixing or separating received signals, and Ethernet controller 50 for controlling data communication And a third communication port 60.

The first communication port 10 is connected to a telephone jack which is an end of a general telephone line, and serves as an input / output interface of voice signals and data signals. That is, voice and data signals transmitted through the telephone network and the data network are received through a general telephone line installed in the building, and the voice and data signals are transmitted to the signal mixing / separation unit 40 through the first communication port 10. do. In addition, voice and data signals received from the signal mixing / separating unit 40 are transmitted to the general telephone line through the first communication port 10. In this case, according to an embodiment of the present invention, the general telephone line may transmit voice and data signals simultaneously, that is, mixed signals.

The second communication port 20 is connected to a general telephone and becomes an input / output interface of a voice signal. That is, the voice signal received from the telephone is transmitted to the signal mixing / separating unit 40 through the second communication port, and the voice signal separated from the signal mixing / separating unit 40 is transmitted to the second communication port ( 20) is sent to the regular telephone.

The signal mixer / separator 40 separates voice and data signals received from the first communication port 10 to transmit voice signals to the second port 20, and transmits data signals to the Ethernet controller 50. Or transmits to the third communication port 60. In addition, the signal mixer / separator 40 receives the voice signal received from the second communication port 20 and the signal received from the Ethernet controller 50 or the third communication port 60 to perform the first communication. Transmit to port 10. In this case, when the voice signal and data signal are simultaneously received, the signal mixer / separator 60 mixes the signal and transmits the mixed signal to the general telephone line through the first communication port 10. Therefore, the ordinary telephone line can transmit voice and data signals at the same time as in the prior art.

As described above, according to the embodiment of the present invention, the voice and data signals may be simultaneously transmitted in a mixed form, which is possible for the following reasons.

In general, a telephone line can transmit a signal of about 15 MHz, but since the frequency component required by the exchange is less than 5 KHz, the frequency component of an actual voice signal transmitted through a general telephone line is a low frequency component of less than 5 kHz. Therefore, if the data signal of the frequency component of the 3-15MHz band is transmitted through a general telephone line without going through an exchange, it is possible to transmit voice and data signals simultaneously without signal interference.

The signal mixer / separator 40 is a low pass filter (LPF) 42 for extracting a voice signal from an input signal, a band pass filter (BPF) 44 for extracting a data signal, and a voice and data signal transmission. And a mixer 46 for mixing the voice signal input through the time low pass filter 42 and the data signal input through the band pass filter 44.

That is, the low pass filter 42 of the signal mixer / separator 40 extracts a voice signal, which is a low pass component, from the mixed signal received through the first communication port 10, and extracts the extracted voice signal from the second communication port. Send to the phone via 20. In addition, the band pass filter 44 extracts a data signal which is a signal of a specific frequency band, for example, a frequency band between 3 MHz and 15 MHz among the mixed signals received through the first communication port 10, and converts the extracted data signal into an Ethernet controller. 50 or the third communication port 60. In addition, when the mixer 46 receives the voice and data signals through the first communication port 10 of the mixed signal, the mixer 46 provides the input mixed signal to the low pass filter 42 and the band pass filter 44, respectively. In the case of outputting a voice signal and a data signal through the first communication port 10, the operation of mixing the two signals is performed.

The Ethernet controller 50 is a device for transmitting and receiving data in the form of a carrier sense multiple access with collision detection (CSMA / CD) packet through a communication cable in a computer. The data signal received from the signal mixer / mixer 40 is output to the PCI interface 30 through the Ethernet controller 50, and the data signal received from the PCI interface 30 is transmitted through the Ethernet controller 50. It is output to the signal mixing / mixing section 40.

The PCI interface 30 is for interfacing a PCI bus (not shown) on the computer's main board with the Ethernet controller 50, and data signals transmitted through the PCI bus are transferred to the Ethernet controller 50 through the PCI interface 30. ), And the data signal transmitted from the Ethernet controller 50 is output to the PCI bus through the PCI interface (30).

The third communication port 60 is connected to a network, preferably another computer employing Ethernet equipment, via an unshielded twisted pair (UTP) cable and through a band pass filter 44 of the signal mixer / separator 40. It serves as an interface for outputting the output data signal to the network or outputting the data signal input through the network to the signal mixing / separating unit 40.

As described above, since the PC card according to the embodiment of the present invention has a built-in signal mixing / separation unit capable of separating and mixing voice signals and data signals, the PC card is mounted on a computer and is already installed in a building. By simply connecting to a telephone line and a telephone, voice and data signals can be simultaneously transmitted and received.

2 is a diagram schematically showing a voice and data signal transmission system according to an embodiment of the present invention.

As shown in FIG. 2, the voice and data transmission system according to the embodiment of the present invention is equipped with a telephone line end portion 100 serving as an input / output interface for voice and data signals, and a PC card for voice and data shown in FIG. Computer 200, a phone 300 connected to the port of the computer, a control device 400 for separating and mixing the voice signal of the phone and the data signal of the computer, and a router (Router), etc. Ethernet switching hub (500) which can be connected to an Ethernet, and a main distribution frame (MDF) 600 for interfacing voice signals separated from the control device 400 to the telephone network. Is done.

The telephone line termination part 100 is generally fixedly disposed in a wall of a home and serves as an input / output interface (I / O interface) of voice and data signals.

The computer 200 is connected between the telephone line terminal 100 and the general telephone 300 through the built-in PC card shown in FIG. Accordingly, the computer 200 receives the voice and data signal signals from the telephone line termination unit 100 and separates them into voice and data signals, respectively, and then divides the voice and data signals into the phone 300 and the PCI bus inside the computer, respectively. To send. In addition, when the computer 200 receives the voice signal and the data signal from the telephone and the PCI bus, respectively, these signals are mixed and transmitted to the telephone line termination 100.

The control device 400 is connected to the telephone line termination part 100, the Ethernet switching hub 500, the main main distribution board 600, and mixes and separates the voice signal and the data signal.

That is, when the control device 400 receives the data signal transmitted from the Ethernet switching hub 500 and the voice signal transmitted from the main main board 600, the voice and data signals are mixed and the telephone line termination unit 100 is mixed. In the case of receiving a voice and data signal from the telephone line termination unit 100, the voice signal and the data signal are respectively separated and transmitted to the main main board 600 and the Ethernet switching hub 500.

This control device 400 includes a low pass filter (not shown) and a band pass filter (not shown) similarly to the signal mixing / separation device of the PC card shown in FIG. The low pass filter of the control device 400 extracts a voice signal that is a frequency component of a 0 to 5 kHz band among the voice and data signals input through the telephone line termination part 100, and extracts the extracted voice signal from the main wiring board 600 in the premises. ) The band pass filter of the control device 400 extracts the data signal of the frequency component of the 3 MHz to 15 MHz band among the voice and data signals input through the telephone line termination part 100 and converts the extracted data signal into the Ethernet switching hub 500. To send).

The Ethernet switching hub 500 is connected to an external data network, such as an optical cable, and transmits a data signal transmitted from the outside to the control device 400 or transmits a data signal transmitted from the control device 400 to an external data network. send.

The main main board 600 in the premises is connected to an exchange of a telephone station through an external telephone network, and transmits a voice signal transmitted from the external telephone network to the control device 400 or transmits a voice signal transmitted from the control device 400 through the telephone network. Send to the exchange.

As such, when the voice and data signal transmission system according to the embodiment of the present invention receives a voice and data signal from the outside, the control device mixes these signals and simultaneously transmits them through the telephone line already installed in the building. A computer system equipped with a card for a PC according to an embodiment of the present invention may receive these mixed signals, separate voice and data signals, respectively, and transmit the separated signals to the telephone and the PCI bus. Therefore, voice and data can be transmitted simultaneously using the existing telephone line.

While the foregoing has been described with reference to preferred embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

As described above, according to the present invention, a PC card having a built-in signal mixing / separation unit capable of separating and mixing voice signals and data signals is mounted on a computer, and simply connected to a telephone line and a telephone already installed in a building. In this case, voice signals and data signals can be simultaneously transmitted and received.

Claims (9)

A first communication port connected to a telephone line already installed in the building and serving as an input / output interface between a voice signal and a data signal; A second communication port connected to a telephone and serving as an input / output interface of a voice signal; When receiving voice and data signals from the first communication port, the voice and data signals are respectively separated, and the voice signals are transmitted to the telephone through the second port, and the data signals are transmitted to the PCI bus of the computer. In case of receiving a voice signal and a data signal from the PCI bus of the telephone and the computer, respectively, the voice and data transmission card includes a signal mixing / separation unit for mixing the voice and data signals and transmitting them to the first communication port. . The method of claim 1, An Ethernet controller for receiving a data signal received from the signal mixing / separating unit and controlling data communication; And a PCI interface coupled to a PCI bus of the Ethernet controller and the computer, the PCI interface for interfacing the Ethernet controller and the PCI bus. The method of claim 2, A third communication device connected to an external computer via a cable and configured to transmit a data signal received from the signal mixer / separator to an external computer or a data signal received from the external computer to the signal mixer / separator Card for voice and data transmission further comprising a port. The signal mixing / separation unit according to any one of claims 1 to 3, wherein A low pass filter for extracting a voice signal that is a low frequency component among voice and data signals received through the first port; And a band pass filter for extracting a data signal from the voice and data signals received through the first port. The method of claim 4, wherein The low pass filter extracts low frequency components of 0 to 5 kHz or less, and the band pass filter extracts band frequency components of 3 to 15 MHz or less. One or more telephone line terminations for transmitting voice and data signals; A first communication port connected to the telephone line termination and serving as an input / output interface of a voice signal and a data signal, a second communication port connected to a telephone and serving as an input / output interface of a voice signal, and a voice from the first communication port And when receiving a data signal, separate the voice and data signals, respectively, to transmit the voice signal to the telephone through the second port, and to transmit the data signal to the PCI bus of the computer, and the PCI bus of the telephone and the computer. In the case of receiving a voice signal and a data signal from each of the voice line and the data transmission card including a signal mixing / separation unit for mixing the voice and data signals and transmitting the signal to the first communication port, respectively. One or more computers connected to each other; A control device that separates voice and data signals received through the first communication port and the telephone line termination, and mixes voice and data signals respectively received from an external telephone network and a data network to the telephone line termination; An Ethernet switching hub for transmitting a data signal separated by the control device to an external data network or for transmitting a data signal transmitted from an external data network to the control device; And And a main main board for providing a voice signal from an external telephone network to the control device and providing the voice signal provided from the control device to the telephone exchange network. The method of claim 6, An Ethernet controller for receiving a data signal received from the signal mixing / separating unit and controlling data communication; And a PCI interface coupled to the PCI bus of the Ethernet controller and the computer, the PCI interface for interfacing the Ethernet controller and the PCI bus. The method of claim 6 or 7, wherein the signal mixing / separation unit A low pass filter for extracting a voice signal that is a low frequency component among voice and data signals received through the first port; And a band pass filter for extracting a data signal from the voice and data signals received through the first port. The method of claim 8, The control device A low pass filter for extracting a voice signal, which is a low frequency component, from the voice and data signals received through the telephone line termination part and transmitting the voice signal to the main main board in the premises; And a band pass filter for extracting a data signal from the voice and data signals received through the telephone line terminal and transmitting the extracted data signal to the Ethernet switching hub.