KR100296616B1 - Handheld terminal with wired network and call method - Google Patents

Abstract

The present invention relates to a portable terminal using a wired network and a call method thereof, the portable terminal according to the present invention includes: a keypad 10 for inputting a key of a user; A keypad connection unit (11) connected to the keypad (10) to receive key input data; The audio signal input from the audio signal input / output unit 12 is signal-processed so as to be suitable for transmission by the path of the mode set by the keypad 10, or the audio signal received from the antenna and the wireless transmitter 50 is inputted to the voice. A digital signal processor (DSP) 20 for signal processing to be suitable for output to the signal input / output unit 12; A ROM 33 in which an internet network access program provided by a communication service provider and a signal processing control program of the digital signal processor 20 are stored; A D / A converter 21 for converting the signal processed voice data into an analog signal; And a wired connection of the converted analog voice signal to a wired switch (Ex _x ) in an external wired switching network 100 that can be connected to the wireless switching network 200 and the internet network 300, respectively. It is a very useful invention that is configured to include a line connection unit 31 for transmitting to the digital signal processing unit 20 via the A / D converter 22, it is possible to minimize the occurrence of expensive call charges due to the use of a wireless communication network .

Description

Portable terminal using wired network and its method of communication

The present invention relates to a portable terminal using a wired network and a call method thereof, and more particularly, to a portable terminal connected to a call through a wireless communication network, using a wired network to make a call connection through a wired communication network according to a user's selection. It relates to a portable terminal and a call method thereof.

A mobile communication terminal (hereinafter, referred to as a portable terminal) widely used as a personal communication service (PCS) or a personal digital assistant (PDA) is wirelessly communicated by a base station randomly assigned to each zone regardless of communication distance or terminal type. By being connected to a service provider, the mobile phone is widely distributed because it is possible to communicate anytime, anywhere, even on the go, and is easy to carry.However, users of the portable terminals pay wireless call rates at the same rate according to the talk time regardless of the communication environment. Due to the economic burden on the need to be reluctant to use the portable terminal, the wireless call charge of the portable terminal, especially when using frequent international calls has become a greater burden.

As a result, some users have received an 'Internet phone' service that connects to the Internet network connected to a wired telephone network by using PC (personal computer) communication, which is a communication allocated an access line from the Internet network. It is possible to run PC modem program or Internet phone program that supports it through the service provider network (Cheonlian, Hitel, etc.), and separately, a system that can directly access the Internet network through a dedicated line. It also saves on call charges.

However, the 'Internet Phone' service method used as described above requires expensive equipment such as a PC or a LAN and can be used only in an extremely limited environment. It was not enough to act as a fundamental measure to reduce the toll rate.

Therefore, the present invention is equipped to meet the above demands, according to the user's selection, a portable terminal using a wired network in combination with the mobile terminal so that the call connection in the portable terminal is selectively made through a wireless communication network or a wired communication network; Its purpose is to provide a call method.

1 shows the configuration of a preferred embodiment of a portable terminal using a wired network according to the present invention,

2 is a flowchart of a call method of a portable terminal using a data network according to the present invention;

Figure 3 shows the configuration of another preferred embodiment of a portable terminal using a wired network according to the present invention.

* Explanation of symbols for the main parts of the drawings

A: a portable terminal using a wired network according to the present invention

Ex _x : Wired Switch Ex _y : Wireless Switch

P _X : Base Station 10: Key Pad

11: Keypad connection part 12: Audio signal input / output part

20: Digital Signal Processing Unit (DSP) 21: D / A Converter

22: A / D converter 30: Central processing unit (CPU)

31: Line connection part (Wire i / F) 32: LAN connection part (LAN i / F)

33: ROM 40: Wireless Receiver

50: wireless transmission unit 100: wired switching network

200: wireless switching network 300: Internet network

A portable terminal using a wired network according to the present invention for achieving the above object, in the mobile communication terminal, mode selection means for selecting a signal transmission line in a wired mode; Signal processing means for signal processing a signal method and a voice signal according to the selected mode; And a line connecting means for connecting the signal processed voice signal to an external line.

In addition, the call method of the portable terminal using the data network according to the present invention, the first step of switching the voice data transmission and reception mode by wire: the second step of requesting a call to the data communication network through the path of the switched mode: A third step of transmitting the voice signal to the compressed voice data through the call establishment path and restoring and outputting the received compressed voice data; and a fourth step of wirelessly restoring the data transmission / reception mode at the end of the call. will be.

In the portable terminal and the call method using the wired network configured and configured as described above, first, when the user of the mobile communication terminal switches the voice data transmission / reception mode to the wired mode by using the mode selection means, the call is connected to the data communication network through the wired path. do. When the voice signal transmitted through the wired path connected as described above is compressed by the signal processing means, the line connecting means connects and transmits the compressed voice data to an external line and receives and receives the compressed voice received from the external line. Data is restored by the signal processing means to the original audio signal, and at the end of the call, the preset data transmission / reception mode is restored wirelessly.

Hereinafter, the configuration and operation of an embodiment of a portable terminal using a wired network according to the present invention will be described in detail with reference to the accompanying drawings.

1 illustrates a configuration of an embodiment of a portable terminal using a wired network according to the present invention, comprising: a keypad 10 for inputting a user's key; A keypad connection unit (11) connected to the keypad (10) to receive key input data; The audio signal input from the audio signal input / output unit 12 is signal-processed so as to be suitable for transmission by the path of the mode set by the keypad 10, or the audio signal received from the antenna and the wireless transmitter 50 is inputted to the voice. A digital signal processor (DSP) 20 for signal processing to be suitable for output to the signal input / output unit 12; A ROM (ROM) 33 in which an internet network access program provided by a communication service provider and a signal processing control program of the digital signal processor 20 are stored; A D / A converter 21 for converting the signal-processed voice data into an analog signal; And a wired connection of the converted analog voice signal to a wired switch (Ex _x ) in an external wired switching network 100 that can be connected to the wireless switching network 200 and the internet network 300, respectively. It comprises a line connecting portion 31 for transmitting to the digital signal processing unit 20 via the A / D converter 22, the line connecting portion 31 is connected to the general wired telephone network selectively, so that the user is in a wired mode In case of setting the portable terminal, the portable terminal is used like a general landline telephone.

Hereinafter, the operation of the portable terminal using the wired network according to the present invention configured as described above will be described in detail in parallel with the flowchart of FIG. 2 which is a call method of the portable terminal using the data network according to the present invention.

In the initial state in which the portable terminal A is set to the wireless mode, when the user first presses a specific key installed on the keypad 10, that is, a "wired" button (SO1), the CPU 30 This is confirmed through the keypad connection unit 11.

At this time, the central processing unit 30 is the access number confirmed (SO2) input through the keypad 10 and the keypad connection unit 11, that is, the corresponding access number of the telephone number is domestic, the input access number The corresponding program for accessing the to the wired telephone network 100 is read from the ROM 33. Subsequently, the digital signal processing unit 20 converts the input access number into call connection request data by the read program (SO3), and then converts the converted call connection request data into a D / A converter 21. And it is transmitted to the wired telephone network 100 via the line connection portion 31 in sequence (SO4). Thereafter, when the wired telephone exchange Ex _{x in} the wired telephone network 100 transmits the call connection request data to the telephone exchange Ex _x , the corresponding exchange Ex _x is transmitted. Call connection is made by requesting a call to the corresponding destination of the data.

In the call connection state as described above, the central processing unit 30 transmits the voice signal input from the voice signal input / output unit 12 to the digital signal processing unit 20 by a corresponding program read from the ROM 33. The encoded voice data is converted into an analog voice signal via the D / A converter 21 (SO6) and then transmitted to the line connection unit 31. Thereafter, the converted and transmitted voice signal is transmitted to the call-connected destination through the wired telephone network 100 connected to the line connection unit 31 (SO7).

In addition, the voice signal from the destination is passed through the wired telephone network 100, the line connection unit 31, the A / D converter 22, and the digital signal processing unit 30 by the reverse process described above. It is output through 12 so that the caller can receive it.

On the other hand, when the corresponding destination of the access number (SO2) confirmed through the keypad 10 and the keypad connection unit 11 is a foreign country, the access code is a communication service provider network in the wired telephone network (100) The central processing unit 30 reads the corresponding program to be transmitted to a telephone network (not shown) of a foreign country via the Internet and the Internet network 300).

Subsequently, the access number is converted into call connection request data by the digital signal processing unit 20 and the D / A converter 21 driven by the read program, and the line connection unit 31, the communication service provider network and the Internet. The transmission is connected to the foreign telephone network through the network 300 and then transmitted to the foreign telephone exchange, thereby making a call connection with the destination. Thereafter, the user's voice signal input through the voice signal input / output unit 12 is a digital signal processor 20 by a program read from the ROM 33. After conversion via the D / A converter 21 and the line connection part 31 in turn (SO5, SO6), it is transmitted to the receiver of the destination via the call connection path as described above (SO7).

In addition, the voice signal of the destination receiver is via the reverse telephone line, the Internet network 300 and the wired switching network 100 by the reverse process described above, the line connection portion 31, the A / D converter 22 The digital signal processor 30 and the voice signal input / output unit 12 may allow the user to receive it.

3 is a block diagram of another embodiment of a portable terminal using a wired network according to the present invention, the same reference numerals as those of FIG. 1, and detailed description thereof will be omitted. In addition, an embodiment of FIG. 1 relates to a portable terminal that is dialed through a wired telephone network, while the present embodiment of FIG. 3 relates to a portable terminal that is dialed through a LAN. It further comprises a LAN connection portion 32 for connecting to a LAN (wire) in addition to the element, wherein the ROM 33 is of the LAN connection portion 32 for transmitting call connection data and voice data to the LAN. The operating program is saved.

The call connection request data input by the user and signal-processed by the corresponding driving program as in the above-described example is connected to the Internet network 300 by using a dedicated line through the LAN connection unit 32. As a result, the call connection is made to the corresponding destination of the call connection request data. Accordingly, the voice signal intended to be input to the voice signal input / output unit 12 is received by the digital signal processing unit by the program read from the ROM 330. 20 and the LAN connection unit 32 are sequentially transmitted to the called-connected destination, and the voice signal of the receiver is transmitted to the user by the reverse process as described above. The phone call will be made.

The portable terminal and the call method thereof using the wired network according to the present invention configured and configured as described above are connected to a portable terminal which is set to always be connected via a wireless communication network, via a wired communication network according to a user's selection. In this case, when the user sets the wired mode, the portable terminal can be used like a general wired telephone, thereby minimizing the occurrence of expensive call charges due to the use of a wireless communication network.

Claims (5)

Key input means for key input: Key connection means connected with the key input means to receive key input data; Signal processing means for signal processing the voice signal to be input through the path of the mode set by the key input means, and signal processing the voice signal received through the path of the set mode; Storage means for storing a signal processing control program in said signal processing means; D / A conversion means for converting the signal-processed voice data into an analog signal; And A wired network comprising a line connection means for wired connection of the converted analog voice signal to an external wired switch, and a line connection means for transmitting the voice signal received through the wired connection to the signal processing means via an A / D converter. Portable terminal. The method of claim 1, And said line connecting means is connected to a local area network (LAN). The method of claim 1, And said line connecting means is connected to a telephone network. A first step of switching a voice data transmission / reception mode to a wired; Requesting a call to a data communication network through the switched mode path; And And a third step of transmitting the input voice signal to the compressed voice data through the established path and restoring and outputting the received compressed voice data. The method of claim 4, wherein And a fourth step of automatically restoring the data transmission / reception mode wirelessly at the end of the call or at the time of disconnection of the wired connection path.