KR20020074720A - The apparatus for internet telephone connecting in personal computer - Google Patents

Abstract

PURPOSE: An internet telephone connection device combined with a main wire telephone is provided to use an Internet telephone and a general telephone by integrating a sound card function and an Internet telephone connection device using a sound chip set for a PC. CONSTITUTION: A PC interface unit(110) transmits voice/control/DTMF(Duel Tone Modulation Frequency) data. A voice signal processing unit(121) processes/transmits voice data between the PC interface unit(110) and a main wire, supports a MIDI/joystick port, and performs a PC sound card function. A voice signal transmitting unit(122) applies a power source to a voice signal transmitted from the voice signal processing unit(121), transmits the signal through two telephone lines, and transmits the voice signal transmitted from the telephone lines to the voice signal processing unit(121). A control unit(130) controls the voice signal processing unit(121), controls an operation of a ring generator for generating a ring signal, and outputs a DTMF received from a DTMF receiving unit, an input signal from the voice signal processing unit(121), and a main wire or Internet telephone selection signal in accordance with an on/off hook detecting result. A switching unit(123) selects the voice signal transmitted from the voice signal transmitting unit(122) or a voice signal being entered through the main wire by the selection signal and connects the selected signal to a telephone terminal.

Description

Personal computer with built-in trunk line telephone. {The apparatus for internet telephone connecting in personal computer}

The present invention relates to an Internet telephone access device, and more particularly, by using a sound chipset of a conventional PC (personal computer), integrating the functions of a sound card and a general telephone connection function, thereby connecting an ordinary telephone to an Internet telephone or a general telephone. The present invention relates to a PC-embedded trunk line telephone combined Internet telephone connection device that can be used as a PC.

Recently, due to the development of information and communication, Internet telephones using the Internet as well as general telephones using a public telephone network (PSTN) are gradually expanding. In particular, the use of Internet telephony is gradually increasing due to high quality PC, high speed, and popularization of data transmission speed due to high quality, low cost and ease of use. In order to use such an internet phone, first of all, an auxiliary device such as a PC connected to the Internet, a sound card built into the PC, a headset (microphone and headphones) connected to the sound card, etc. must be provided. You can connect to the site that provides the service and make a call.

However, such an internet phone must use a headset equipped with a microphone and headphones, and was not compatible with a general telephone. This problem was solved by attaching a separate connection device between the sound card and a general telephone of a computer.

Such a conventional technology is Korean Patent Application No. 10-2000-9699 (exchange for making Internet phone via PC as a general telephone), 10-2000-18013 (combined Internet phone and general telephone) Adapters for use), and Utility Model Registration Application No. 20-2000-12927 (connection device for making an Internet telephone call from a general telephone).

1 is a block diagram of an adapter that can be used as a combination of the Internet phone and a conventional telephone according to the prior art, a general telephone (1), public switched telephone network (PSTN) (2), PC (3), sound card ( 4), a serial port 5, the Internet 6 and the adapter 10.

Here, the adapter 10 includes a mixing circuit 13, a DTMF decoder 14, a controller 11, a photocoupler 15, and a switch 12.

The operation of the adapter configured as described above is as follows.

When the user picks up and dials the handset of the general telephone 1 connected to the adapter 10, the DTMF decoder 14 converts the DTMF signal corresponding to the telephone number into a digital signal and transmits it to the control unit 11, 11) converts the digital signal into ASCII code and transmits it to the serial port of the computer (3) connected to the Internet. Attempt to make a call.

When the telephone is connected, the voice signal is received through the sound card 4, and the voice signal is transmitted to the general telephone 1 by adjusting the magnitude of the impedance through the mixing circuit 13 of the adapter 10. Allows you to remove noise caused by impedance.

On the other hand, when the general telephone (1) connected to the adapter 10 to use the general telephone through the public switched telephone network (2), the control unit 11 causes the control unit 11 to switch using the hook button of the general telephone (1). The control unit 12 is connected to the public telephone switching network (2) line.

When a call is received through an Internet phone, the software is transmitted to the control unit 11 through the serial port, and the control unit 11 maintains the switch of the switch unit 12 as an Internet phone to ring the ringing tone of the general telephone unit 1. The user is informed that the call is coming.

In addition, when the public telephone is connected from the other party through the public telephone switching network (2) in the initial connection to the Internet phone, the signal is detected by the light emitting diode of the photocoupler 15 connected to the public telephone line and transmitted to the control unit 11. do. The control unit 11 connects the switch of the switch unit 12 by a general public telephone line to send an incoming call of the general telephone 1 to inform the user that the call has been received.

As described above, the above-described conventional technology uses an adapter connected to a general public telephone line and a computer connected to the Internet to a conventional telephone using an existing one, thereby allowing an Internet phone or a public telephone to be selected by a user. Can be used freely, there is an effect that can reduce the additional accessories.

However, such a prior art has an external type connected to a sound card of a PC, and if a built-in type is used, a PCI interface chip or an ISA interface chip is used, and a control unit, a PCM codec, a subscriber circuit, and the like are used. If a separate interface chip is used, the interface chip itself is not only expensive, but there are various difficulties in developing the device driver for the PC.

The present invention is to solve the above-mentioned problems of the prior art, the purpose is to integrate the function of the sound card and the Internet telephone connection device using a PC sound chipset, so that not only the Internet phone by connecting to a regular telephone, It is to provide PC built-in local telephone and internet dialing device that can be used as a PC.

1 is a block diagram of an internet phone switch according to the prior art,

2 is a block diagram of a personal computer built-in trunk line telephone combined Internet dialing device according to the present invention,

3 is a flowchart of a process of controlling a telephone call from a trunk line by a personal computer-embedded trunk line telephone combined Internet dialing device according to the present invention;

4 is a flowchart illustrating an operation process of a personal computer during a telephone call from the Internet through a personal computer built-in trunk line telephone combined Internet dialing device according to the present invention;

5 is a flowchart illustrating an operation process of a telephone access device during an internet phone call in a personal computer built-in trunk line Internet access connection device according to the present invention;

6 is a flowchart of an operation process of a PC and a telephone access device when making a call using a personal computer built-in trunk line / internet telephone access device according to the present invention;

7 is a flowchart illustrating an operation process when making a call through a personal computer-embedded trunk line telephone / internet dialing device according to the present invention.

<Description of Symbols for Major Parts of Drawings>

100: phone connection device 120: PC interface unit

121: voice signal processor 122: voice signal transmitter

123: switching unit 124: telephone terminal

125: trunk line terminal 130: control unit

In order to achieve the object of the present invention, a PC-embedded trunk line telephone combined internet dialing device according to the present invention includes a PC interface unit for transmitting voice data, control data, and DTMF (Duel Tone Modulation Frequency) data with the PC, and the PC interface unit. Voice signal processing means for processing and transmitting voice data between the main line and the trunk line, and performing a PC sound card function supporting a MIDI / joystick port, and applying power to the voice signal transmitted from the voice signal processing means, thereby providing two-line telephone line. And a voice signal transmitting means for transmitting a voice signal transmitted from two telephone lines to the voice signal processing means, controlling the voice signal processing means, and controlling a driving of a ring generator for generating a ring signal. In addition, the switching unit according to the DTMF signal received from the DTMF receiver and the detection result of the on / off hook (On / Off hook) Selection of an incoming voice signal on a voice signal or a trunk line terminal transmitted from the audio signal transmitting means by a selecting signal output from the control means, the control means that control the features a yirueojim part switching a connection to the telephone jack.

The present invention made as described above will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram of a PC-embedded trunk line telephone combined Internet telephone connection apparatus according to an embodiment of the present invention. As shown in FIG. 2, a PC interface unit 110 for transmitting voice data, control data, and DTMF data is provided. A voice signal processor 121 for performing a PC sound card function such as transmitting audio data between the PC interface 110 and the trunk line by performing analog / digital or digital / analog conversion processing and supporting a MIDI / joystick port; The voice signal transmitting unit 122 applies power to the voice signal transmitted from the voice signal processing unit 121 and transmits it to the telephone line of two lines, and also transmits the voice signal transmitted from the telephone line of two lines to the voice signal processing unit 121. And the DTMF and the voice received from the DTMF receiver 131 while controlling the driving of the ring generator 132 that generates a ring signal by controlling the voice signal processor 121. The controller 130 outputs a trunk line or internet telephone selection signal according to the input signal from the call processor 121 and the on / off hook detection result, and from the voice signal transmitter 122 under the control of the controller 130. It consists of a switching unit 123 for selecting the transmitted voice signal or the voice signal coming through the trunk line terminal 125 to connect to the telephone terminal 124.

Here, each unit is composed of one PC card, the PC interface unit 110 to be connected to the PC is configured to be inserted into the slot provided in the PC by configuring in a PCI or ISA bus system.

When described in more detail with reference to the accompanying drawings, the operation according to an embodiment of the present invention configured as described above are as follows.

First, the computer-embedded telephone connection apparatus according to the present invention inserts and fixes the PC interface unit 110 in a slot provided in the PC as shown in FIG. 2, and a general telephone in the telephone terminal 124 provided on one side of the card. 101 is connected, and a telephone line from the public telephone network (PSTN) is connected to the trunk line terminal 125. FIG.

In this case, the voice signal processor 121 is provided with a basic driver, and a joystick port or a MIDI port is basically built in. In addition, the controller is connected to the MIDI port (or joystick port) of the voice signal processor 121, and the line out and microphone terminals are connected to the voice signal transmitter 122.

3 is a flowchart illustrating an operation of a computer built-in telephone access apparatus according to the present invention, in which a telephone call is received through a trunk line.

If the ring of the telephone 101 does not ring or the off-hook is not detected even when the ring rings, the standby state is maintained. If a call is made through a CO line, a ring detector (not shown) detects the ring and controls the controller 130. On the other hand, the control unit 130 detects the off-hook and checks the handset state of the telephone 101. (S102)

If the off-hook signal is detected after more than a predetermined time after ring detection, the user judges that the user picked up the handset to make a call instead of picking up the call.

If the off-hook signal is detected within the set time, the call is recognized and answered.

The call proceeds after a call response is made to the PC (S105). (S106) The call connection is performed by controlling the switching unit 123 to the telephone terminal 124 and the trunk line terminal 125 under the control of the controller 130. So that you can make calls.

When the call is connected to make a trunk line call (S108), when the call is over, the on-hook is detected (S110) and if the off-hook signal is not detected within a predetermined time, the call is terminated.

However, during a call, when the ring signal is received from the PC and the ring rings, that is, when an internet call is made (S109), if the on-hook is detected and the off-hook is detected again within a predetermined time, the call is switched to the internet call. (S113)

If the off-hook is detected after a certain time after the on-hook detection, it switches to the Internet telephone to control the switching unit 123 to connect the telephone terminal 124 and the voice signal transmission unit 122 to proceed with the Internet telephone. However, if the on-hook is detected and the off-hook is not detected within a certain time, it is determined that the call has ended (S114).

Figure 4 is a flow chart of the Internet phone call process through the PC built-in phone access apparatus according to the present invention.

When the telephone call request is called from the Internet in the telephone standby state (S201), it is transmitted to the controller 130 through the PC interface unit 110 and the voice signal processor 121 (S203).

The control unit 130 receiving the call request transmits a busy signal to the Internet when the state of the phone is currently in a call (S212), generates a busy sound and transmits it to the telephone 101 in the call, and the user confirms the call. (S213)

If the user receives a call from the Internet, the controller 130 controls the switching unit 123 to connect the telephone terminal 124 and the voice signal transmission unit 122 so that the call is connected. (S206) When the user or the other party who completes the call hangs up, the Internet telephone call 206 is completed and the PC is notified through the Internet. (S207 to S209)

5 is a flowchart illustrating an internet telephony call process in the computer-embedded telephone access apparatus according to the present invention.

When the call request signal is input from the PC to the controller 130 through the PC interface unit 110 and the voice signal processor 121 in the phone standby state, the phone 101 checks whether the call is in progress. (S301) (S302)

If the call is busy, the busy signal is transmitted to the PC (S310). If not, the controller 130 generates a ring signal to generate a ring through the ring generator 132 (S303).

When the user hears a ring tone and receives a call, the control unit 130 detects an off hook and starts a call. However, if off-hook is not detected after a certain time after the last ring, the call connection procedure is terminated. If the off-hook is detected after a certain time, the user does not pick up the handset to answer the call and tries to make the call. (S304) (S305)

When the call is connected, the PC notifies the call response and connects the call. (S306) (S307)

When the call request ringing from the CO line during the Internet call as described above (S311) (S312), the control unit 130 detects the on-hook state of the telephone 101 (S313), the off-hook within a predetermined time after the on-hook detection If detected, the switching unit 123 controls the connection to the trunk line call, and if the off-hook is not detected, the call is terminated. (S314) (S322).

When the call is connected, the voice signal transmitted from the PC is transmitted to the switching unit 123 through the voice signal processing unit 121 and the voice signal transmitting unit 122 and transmitted to the phone 124 through the switching unit 123. . The voice signal input to the talker of the telephone 124 is transmitted to the PC in the opposite path of the reception path to transmit the voice signal through the Internet.

If the on-hook is detected during the internet call (S311) (S320), and the off-hook is not detected within a predetermined time (S321), the call is terminated (S322).

6 is an operation flowchart of the PC and the telephone access device when making a call using the PC-embedded telephone access device according to the present invention.

When the off-hook is detected by the controller 130, the controller 130 determines that the user picked up the handset to make a call. Therefore, the control unit 130 makes an internet phone call request to the PC through the PC interface unit 110 (S401).

At this time, the control unit 130 controls the switching unit 123 to connect the phone 124 and the voice signal transmission unit 122 to transmit the voice signal. On the other hand, the DTMF receiver 131 receives the DTMF signal corresponding to the telephone number selected by the user to determine the first three digits, and if the designated number controls the switching unit 123 to switch to the trunk line, otherwise The switching unit 123 is controlled to switch to the voice signal transmitting unit 122 so as to use an internet telephone. (S402) (S403).

When calling over the Internet, the entire telephone number is transferred to the PC through the PC interface unit 110, and the call is attempted. If the call is to be made by CO, the DTMF generator transmits the number to the CO line. At this time, outgoing telephone number is sent out except the designated first three digits.

If the other party is busy after the internet call request, a busy signal is generated through the handset of the telephone 101 to inform the user that the other party is busy, and when the other party answers the call, the call is started.

That is, the controller 130 switches to the call waiting state when a hook from the telephone 101 is detected, otherwise, when the receiver receives the call (S405), the controller 130 notifies the controller 130 of the telephone connection (S407), Since the call is connected (S408), the voice signal is transmitted to the phone 101 through the voice signal processor 121, the voice signal transmitter 122, the switching unit 123, and the phone terminal 124, so that an internet call can be made. do.

When the other party hangs up during the internet call (S409) (S410), the call is terminated after transmitting the call termination data to the controller 130, and when the user ends the call, the controller 130 turns on the telephone 101. Detect the hook state and notify the PC of the end of the call (S412).

7 is a flowchart illustrating an operation when making a phone call through a PC-embedded telephone connection device according to the present invention.

First, when the user attempts to make a call using the telephone 101 and lifts the handset, the control unit 130 detects the off hook (S501) and receives the DTMF signal (S502) to determine whether the trunk line switching key is input. (S503) If the CO line switch key input, the control unit 130 controls the switching unit 123 to connect and connect the telephone terminal 124 and the CO line terminal 125, (S510) according to the CO line call request (S511)

However, if it is not the CO line key input, it is determined as an Internet call request (S505). (S521) When the receiver is busy (S521), a busy signal is generated and the on-hook and off of the telephone 101 for a predetermined time. The hook is detected and the busy signal is generated or switched to the call waiting state according to the result. (S532) (S533).

If the receiver is not busy (S521), the PC notifies the call response (S522) and makes a call over the Internet after making a call. (S523) (S524) During an internet call, if the telephone line is When the request ringing, the phone 101 detects an on-hook state and connects a CO line call. (S542 to S544)

As described above, since the phone line and the Internet call are made and received, an internet call can be received even during a phone call, and vice versa.

Although a preferred embodiment according to the present invention has been described above, various modifications are possible, and other persons skilled in the art may implement various modifications and modifications without departing from the claims of the present invention. It is understood that it can be done.

As described above, the PC built-in trunk line combined Internet dialing device according to the present invention is equipped with a trunk line terminal and a telephone terminal so that one PC card is inserted into a PCI or ISA slot in the PC, so that a general telephone is connected to a regular telephone. In addition, the Internet phone can also be used at the same time.

In addition, users who do not have a sound card in the PC can use both an Internet phone and a regular phone at the same time by using a regular phone, and a user who is using an existing sound card can add a dial-up device while using an existing sound card. You can have a phone call while listening to music.

In addition, when there is no sound card, it is possible to use the sound card at the same time by simply adding a simple terminal such as an earphone connection terminal.

In addition, when a call comes through an Internet phone, there is a convenient effect of ringing the ring using a sound function built into the dialing device or generating a ring signal to ring at the phone using a ring generator.

It has the effect of lowering the unit cost of the product than when using components such as PCI controller, PCM codec, MCU, etc., and because the existing sound chipset is used, there is no need to develop drivers separately, and general-purpose libraries when developing applications Because of this, the development period can be shortened.

Claims (5)

A personal computer (PC) and a PC interface unit for transmitting voice / control / Duel Tone Modulation Frequency (DTMF) data; Voice signal processing means for processing and transmitting voice data between the PC interface unit and the trunk line and supporting a MIDI / joystick port and performing a PC sound card function; A voice signal transmitting means for applying power to a voice signal transmitted from said voice signal processing means and transmitting it to two telephone lines, and transmitting the voice signal transmitted from two telephone lines to said voice signal processing means; It controls the voice signal processing means and controls the driving of the ring generator that generates the ring signal, and according to the DTMF received from the DTMF receiver and the input signal from the voice signal processing means and the on / off hook detection result. Control means for outputting a telephone selection signal; And PC-type integrated telephone line Internet telephone, characterized in that consisting of a switching unit for selecting the voice signal transmitted from the voice signal transmission means or the voice signal coming from the trunk line terminal connected to the telephone terminal by the selection signal output from the control means Connection device. The PC-embedded trunk line telephone combined internet telephone connection apparatus according to claim 1, wherein each unit is included in one PC card. The PC-embedded trunk line telephone combined Internet telephone access apparatus according to claim 1 or 2, wherein the PC interface unit is any one of a Peripheral Component Interconnect (PCI) or an Industry Standard Architecture (ISA) method. The PC-embedded trunk line telephone / internet telephone connection apparatus according to claim 1, wherein the control unit is connected to any one of a MIDI port or a joystick port of the voice signal processing unit. The PC-embedded local telephone and internet telephone connection apparatus according to claim 1, wherein the voice signal transmitting means transmits a voice signal by connecting to the line-out and microphone terminals of the voice signal processing means, respectively.