KR19990018116A - Data transmitting and receiving device and method using wireless telephone - Google Patents

Abstract

The method of data communication by a data terminal having a wireless modem using a fixed device of a wireless telephone sets up a wireless link between the wireless modem and the fixed device when a call is requested, and outputs a dial tone that is wirelessly received through the fixed device. After converting the phone number information input by tones and outputting tones, it forms a communication path through a public telephone network to perform data communication.When an incoming call is requested, a radio link is established between the fixed device and the wireless modem and a ring signal is received. It outputs and forms a communication path in response to data communication.

Description

Data transmitting and receiving device and method using wireless telephone

The present invention relates to an apparatus and method capable of performing data communication functions using a wireless telephone.

In general, a cordless telephone is composed of a hand unit 101 and a base unit 102, as shown in FIG. 1, which is connected to a public switched network (PSTN) to provide another telephone. 107 and perform a phone call function. In addition, the computer 105 includes a modem (PCMCIA MODEM card) 104, the modem 104 is connected to the telephone line via the RJ11 line 104, the telephone line is connected to the PSTN106 to perform data communication with another computer 108. In this case, the computer 108 may be a PC communication server.

The modem 104 embedded in the computer 105 has the configuration as shown in FIG.

However, the conventional wireless telephone only performs voice call-oriented services in the home or office as shown in FIG. When data communication is performed using a computer 105 such as a notebook computer, the PSTN106 is connected by connecting an RJ11 connection line 103 to a modem (PCMCIA MODEM card or MODEM card of a desktop computer) inside the computer 105. After that, data communication is performed. However, in the data communication service method as described above, when the wire is used, the computer 105 should be located close to the connector attached to the wall. Therefore, when the data communication is to be performed, the computer 106 may be freely used. There was an issue that could not be moved.

In order to solve the above problems, when using a wireless method for data communication using the computer 105, the communication function can be freely performed regardless of the place. Therefore, the fixing device 102 and the computer 105 of the radiotelephone, which are widely used in homes, may perform a wireless communication function, and the fixing device 102 may be wired to the PSTN106 to perform a wired communication function.

Accordingly, an object of the present invention is to provide an apparatus and method capable of performing a data communication service using a wireless telephone.

Another object of the present invention is that a computer is provided with a wireless modem card and the fixing device of the wireless telephone is connected to the public telephone network, so that the computer and the fixing device can communicate wireless data and the fixing device and the public telephone network can perform wired communication. The present invention provides an apparatus and method.

According to an embodiment of the present invention for achieving the above object, a method of data communication by a data terminal having a wireless modem using a fixed device of a wireless telephone, a radio link is established between the wireless modem and the fixed device when the call is requested. And outputs a dial tone received wirelessly through the fixing device, converts the phone number information input by the user into a tone and outputs it, and then forms a communication path through the public telephone network to perform data communication. Forming a radio link between the fixed device and the wireless modem, outputs a ring signal received wirelessly, and forms a communication path in response to the data communication.

1 is a diagram showing a connection relationship between a conventional radiotelephone and a data terminal.

2 is a diagram illustrating an internal configuration of a radio telephone.

3 is a diagram showing a configuration for performing data communication using a wireless telephone according to an embodiment of the present invention.

4 is a diagram illustrating an internal configuration of a radiotelephone according to an embodiment of the present invention.

The present invention includes an algorithm in which a computer has a built-in wireless modem card and can perform wireless communication with a radiotelephone, so that the computer performs data communication through a fixing device of the radiotelephone.

3 illustrates a configuration of a system for performing a data communication function according to an embodiment of the present invention. CT-1 is a first generation wireless telephone and wirelessly connected to CT-1 fixing device 302 for voice call, and CT-1 fixing device 302 is connected to PSTN304 through RJ11 connection line 303. A voice call can be made with a wired subscriber 305. Meanwhile, for data communication, the computer 310 may be equipped with a wireless modem card 310 to perform wireless communication with the fixing device 302. The wireless modem card 310 is a device that provides not only data service but also voice service.

4 is a diagram showing the configuration of the wireless modem card 310, the connector PCMCIA connector 401 is a terminal for connecting to the computer 301. The computer may be a notebook computer or a desk computer. The controller 402 controls the overall operation of the wireless modem card 301. That is, the controller 402 controls the operation of the wireless modem card 310 to perform a wireless communication function between the computer 301 and the fixed device 302. Identification memory 403 is a memory for storing the ID of the wireless modem card. The voice processor 404 processes voice transmitted between the computer 301 and the fixing device 302. The cordless baseband processing part 405 processes the input data and the voice signal into the band of the fixed device 302. The modem (V.34 MODEM) 406 is connected to the wireless baseband processing unit 405 and performs a function of demodulating and demodulating data output and input to the baseband processing unit 405 under the control of the control unit 406. The voice processor 404, the wireless baseband processor 405 and the modem 40 are baseband processing IC (baseband processing IC). The wireless processing unit 407 is connected to the baseband processing unit 405 and processes the RF signal for voice and data input and output. Telephone circuit 408 is connected between RJ 11 connector 409 and modem 406 and baseband processor 405 to process telephone voice.

3 and 4, when the wireless modem card 301 is mounted on the computer 301, data input / output from the computer 301 is transmitted / received to the controller 402 through the connector 401.

First, an operation called on the PSTN304 side will be described. When the controller 402 requests a call during the call, the baseband processor 405 requests the call setup from the fixed device 302 through the wireless control channel. The fixing device 302 then allocates an empty channel and forms a communication path with the PSTN304 via the RJ11 line. Then, the PSTN304 supplies a dial tone, and the fixing device 302 transmits the dial tone to the wireless modem card 310 through the formed wireless link after receiving it. Then, the analog modem tone signal is changed into a digital signal in the voice processing unit 404 of the baseband processing IC of the wireless modem card 310, which is converted into data that can be processed by the voice processing program inside the computer 301, and then through the control unit 402. Is sent to the computer 301. The computer 301 then converts the dial tone data back to an analog signal and plays it back through the speaker.

When the user dials after receiving the dial tone, the dialing data is applied to the wireless modem card 310 and the fixing device 301 to the PSTN304. Call In this case, the external computer 306 may be a server for PC communication.

When a data communication path is formed through an external computer and a wireless modem card as described above, the computer 301 transmits a file to be transmitted to the controller 402. Then, the controller 402 outputs the received data to the modem 406, and modulates the modem 406 into a band-limited signal and outputs it to the wireless baseband processor 405. The wireless baseband processor 405 then FM-modulates the received signal and outputs it to the radio processor 407, which converts the signal into an RF signal and propagates it to the air.

In the case of a voice call, a voice signal may be input through a microphone inside the computer 301. The input analog voice signal is converted into digital voice data and then processed by a voice processing program and applied to the controller 402. . Then, the controller 402 outputs the voice data to the voice processor 404. The voice processor 404 converts the digital voice data into an analog voice signal and outputs the analog voice signal to the wireless baseband processor 405. The wireless baseband processor 405 outputs the analog voice. The signal is FM-modulated and output to the radio processor 407. The radio processor 407 converts the voice signal into an RF signal and propagates it to the air.

The incoming data service and voice service proceed in the reverse order to the above. At this time, the difference that occurs during the transmission and reception is to determine the receiving carrier by first connecting the received signal to the V.34 modem 406 to distinguish whether the received signal is voice or data. In this case, if the reception carrier is not detected in the modem 406, the modem 406 regards the voice signal and connects to the voice processor 404. In addition, when an incoming signal is input through a control channel, the controller 402 requests a ring signal to control the computer 301 to generate a ring signal through a speaker. In FIG. 4, the telephone circuit 408 is a configuration for performing wired data communication in an environment in which there is no fixing device 302 of a wireless telephone.

As described above, in the embodiment of the present invention, a data terminal such as a computer includes a wireless modem card, and the data terminal implements data communication through the fixing device of the wireless telephone. In this case, since the data terminal and the fixed device perform wireless data communication, and the fixed device and the public telephone network perform wired data communication, data communication can be performed regardless of the installation location of the computer. The data terminal may also perform voice and data communication functions through the wireless modem card.

Claims (2)

A data terminal having a wireless modem performs data communication using a fixing device of a wireless telephone, the method comprising: forming a wireless link between the wireless modem and the fixing device when a transmission request is made, and outputting a dial tone received through the fixing device. Converts the phone number information input by the user into a tone and outputs it, and then forms a communication path through the public telephone network to perform data communication, and establishes a radio link between the fixed device and the wireless modem upon request. A data communication method using a wireless telephone, which outputs a ring signal received and forms a communication path in response to performing data communication. A data communication apparatus using a wireless telephone, the computer having a built-in wireless modem card, the wireless modem card is provided with a wireless interface unit for forming a wireless link with a fixing device of the wireless telephone and a connector for connecting with the computer. And forming a wireless link with a fixed device through the wireless interface unit to process a tone signal and data transmitted / received when the computer requests outgoing and incoming calls.