KR200193536Y1 - Apparatus for connecting computer and conventional telephone for internet telephone usage - Google Patents

Abstract

The present invention is a connection device that connects a conventional wired / wireless telephone to a computer so that an existing telephone / wireless telephone can be used as an internet telephone. In the related art, in order to use an internet phone, a user needs to make a call using headphones and a microphone connected by wire to a computer. There is also a feeling that users who are accustomed to handsets with handsets will not be able to make calls using headphones and microphones. In order to solve this rejection, a handset-type headphone / microphone set (aka Internet phone) has been developed, but it has a disadvantage that it can be used only for Internet phones and does not use ordinary phones that users already have. In the present invention, when a conventional general wireless phone is connected to a computer by using the connection device proposed in the present invention, the user can use the Internet phone while moving around freely without having to sit in front of the computer. It also reduces the discomfort for using headphones and microphones, and has the advantage that users can use existing phones without having to purchase a separate phone. In addition, when the Internet phone is not used, the existing telephones connected to the connection device of the present invention are able to make or receive calls through the Public Switched Telephone Network (PSTN).

Description

APAPATUS FOR CONNECTING COMPUTER AND CONVENTIONAL TELEPHONE FOR INTERNET TELEPHONE USAGE}

The present invention relates to a connection device between a computer and a telephone for an Internet phone, and more particularly, to a connection device between a computer and a phone that enables the use of an Internet phone using existing general wired / wireless telephones.

Conventionally, in order to use an Internet telephone, a user must be around a computer because headphones and a microphone connected by wire to a computer must be used. In addition, handset-shaped headphones and microphones (aka Internet phones) have been developed to reduce the rejection of headphones and microphones by users who are familiar with telephones equipped with handsets. There is a disadvantage.

The present invention is designed to improve the above-mentioned shortcomings, and provides a connection device between a computer and a general telephone for an internet telephone to selectively connect a regular telephone and an internet telephone by connecting a general wired / wireless telephone to a computer. The purpose is.

In order to achieve the above object, the present invention provides a connection device for selectively switching a connection between a computer, a telephone, a public switched telephone network, and a headphone / microphone with a built-in sound card: the sound card A four-wire signal according to a voice output and a microphone input of a two-wire signal and a two-wire signal of the telephone, respectively, and a wire converter for converting each other; A first switch having a common terminal connected to a speaker jack of the sound card and having a four-wire input connection unit of the linear converter and the headphones connected to each selection terminal; A second switch having a common terminal connected to the microphone jack of the sound card and having a four-wire output connection unit of the linear converter and the microphone connected to each selection terminal; A third switch having a common terminal connected to the telephone and having a two-wire connection portion of the wire converter and the public switched telephone network respectively connected to each selection terminal; A manual switch for applying a variable control signal to a switching control stage of the first, second and third switches according to a switching operation of a user; It is characterized in that it comprises a ring ringer ringing a ring when connected to the public switched telephone network to detect a ring signal (ring signal).

1 is a block diagram showing an embodiment of a connection device between a computer and a telephone for an Internet telephone according to the present invention.

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

2: computer 4: sound card

8 connection device 10 wire converter

12: ring ringer 14, 16, 18: first, second, third switch

20: manual switch 22: DC-DC converter

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention will be described in detail.

1 is a block diagram showing an embodiment of a connection device between a computer and a regular telephone for an Internet telephone according to the present invention, connected to a computer 2 with a sound card 4 and an external general wired / wireless telephone period. Connection device 8, which comprises a linear transducer 10, a ring ringer 12, first, second and third switches 14, 16 and 18, a manual switch 20. ), And a DC-DC voltage converter 22.

In the figure, a typical wired / wireless telephone uses a two-wire type that uses two twisted-pair wires for transmission and reception while the sound card 4 in the computer 2 Two wires (speaker wires) and two receiver wires (microphones) are used separately, and a four-wire equation is used using a total of four wires.

The wire converter 10 in the connecting device 8 converts two-wire and four-wire types to each other in order to connect the telephone and the sound card 4 to each other. The linear converter 10 may be manufactured using a data access arrangement (DAA) chip. The operation of the converter 10 will be described in more detail. The signal applied to the 2-wire connection unit is output to the 4-wire output connection unit, and the signal applied to the 4-wire input connection unit is output to the 2-wire connection unit. Ensure that the signal applied to the connection is not output to the 4-wire output connection.

In order to drive the wired / wireless telephone, power must be supplied to the two-wire connection part of the line converter 10. The necessary power is supplied from the DC-DC power converter 22 to be described below.

The DC-DC power converter 22 receives the 5V DC power output from the keyboard jack of the computer 2 to provide all the components used in the connecting device 8, that is, the DAA chip constituting the linear converter 10. Generates the voltage required for two wires to drive the wired / wireless telephone connected to the module, each switch 14, 16, 18, 20, and the connecting device 8. Therefore, the connecting device 8 can be manufactured simply without a separate power supply such as a power adapter.

A headphone is connected to the first selection terminal of the first switch 14, and a four-wire input connection portion of the wire converter 10 is connected to the second selection terminal. The first selection terminal of the second switch 16 is connected to the microphone, and the second selection terminal is connected to the 4-wire output connection of the linear converter 10. The first selection terminal of the third switch 18 is connected to a public switched telephone network, and the second selection terminal is connected to a two-wire connection portion of the wire converter 10. The control signal for performing the switching operation of the first, second, and third switches 14, 16, and 18 is configured to be applied from the manual switch 20, and the manual switch 20 according to the user's operation has a low level. It is configured to output a control signal or a high level control signal. The low level control signal selects the first selection terminal of each switch 14, 16, 18, and the high level control signal selects the second selection terminal of each switch 14, 16, 18.

Ring ringer 12 is connected to the public switched telephone network, when it detects a ring signal rings the ring to inform the user that the call has come.

According to the setting of the manual switch 20 is operated in the following two modes.

First, when the manual switch 20 is set to output a low level control signal, each of the switches 14, 16, and 18 selects the first selection terminal, so that the external wired / wireless telephone is connected to the public switched telephone network line. The speaker jack of the sound card 4 is connected to the headphones, and the microphone jack of the sound card 4 is connected to the microphone. Therefore, in such a setting, when a call is received from the public switched telephone network, the user can receive a call from the telephone. The user can also make calls over the public switched telephone network using the telephone. In addition, computer users can use Internet phones with headphones and microphones.

Next, when the manual switch 20 is set to output a high level control signal, each of the switches 14, 16, and 18 selects the second selection terminal, so that the signal output from the speaker jack of the sound card 2 is removed. It is transmitted to the telephone through the first switch 14, the linear transducer 10, and the third switch 18, and the signal output from the telephone is the third switch 18, the linear transducer 10, and the first switch. Through the 14, it is applied to the microphone jack of the sound card 2. Therefore, the user can connect to the Internet phone from the computer 2 and then talk to the Internet phone using a regular wired / wireless phone. In particular, when using a cordless phone as a telephone, a user can move around freely and use an Internet phone without having to be around a computer. With this setting, if a call comes from the public switched telephone network while using the Internet telephone, the ring ringer 12 rings. In this case, the user ignores the incoming call from the public switched telephone network and continues to use the Internet telephone, or the telephone is connected to the public switched telephone network by operating the manual switch 20 so that the manual switch 20 outputs a low level control signal. You can answer the incoming call. The internet phone you are talking to can continue to talk with your headphones or the microphone, or disconnect from your computer.

As described above, when the connection device 8 between the computer 2 and the telephone of the present invention is used, an Internet telephone can be used by using a general wired / wireless telephone. In particular, when a general cordless telephone is connected to the connection device 8, the user no longer needs to be around the computer 2 while using the Internet telephone, and can talk freely while traveling. In addition, to reduce the objection to the use of microphones and headphones, it minimizes the user's cost burden by using existing telephones that users already have, without having to purchase separate phones for the Internet.

Claims (3)

For computers with sound cards, telephones, public switched telephone networks, and connections that selectively switch connections between headphones / microphones: A four-wire converter for receiving a four-wire signal corresponding to a voice output and a microphone input of the sound card and a two-wire signal of the telephone, respectively, and converting the two-wire signals to each other; A first switch having a common terminal connected to a speaker jack of the sound card and having a four-wire input connection unit of the linear converter and the headphones connected to each selection terminal; A second switch having a common terminal connected to the microphone jack of the sound card and having a four-wire output connection unit of the linear converter and the microphone connected to each selection terminal; A third switch having a common terminal connected to the telephone and having a two-wire connection portion of the wire converter and the public switched telephone network respectively connected to each selection terminal; A manual switch for applying a variable control signal to a switching control stage of the first, second and third switches according to a switching operation of a user; And a ring ringer for ringing a ring when it is connected to the public switched telephone network and detects a ring signal. The method of claim 1, And a direct current (DC) -to-DC converter for receiving the direct current power from the keyboard jack in the computer to generate the direct current power for driving the connection device, and providing the connection device to the connection device. The method according to claim 1 or 2, And said telephone is a landline telephone or a cordless telephone.