KR20010011056A - Portable phone using remote keypad - Google Patents

Abstract

PURPOSE: A portable phone using a remote keypad is provided to separate the keypad from a telephone body for remote use and to use a telephone set without opening a flip or a folder, so that the phone can be minimized. CONSTITUTION: In a telephone body(100), a controller(108) processes voice signals and data for ordinary telephone speech or data communication, and controls each unit of a portable phone. A memory(110) stores programs and reference data for processing and controlling the controller(108), and supplies a working memory of the controller(108). A display unit(112) having an LCD(Liquid Crystal Display) displays information according to control of the controller(108). A transceiver(106) transceives RF(Radio Frequency) signals with a base station through a duplexer(104) and an antenna(102). And the transceiver(106) converts received RF signals into digital signals of a baseband to supply the converted signals to the controller(108), and converts digital signals of the baseband supplied from the controller(108) into RF signals for transmission. A connector(114) for external equipments is for connection with a connector(116) of a remote device(118). In the remote device(118), a keypad(120) has function keys and number keys. A display unit(122) is operated by control of the controller(108) to display every kind of information of the portable phone. An ear-phone connection unit(124) is for connection with an ear-phone.

Description

PORTABLE PHONE USING REMOTE KEYPAD {PORTABLE PHONE USING REMOTE KEYPAD}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable phone, and more particularly, to a portable telephone capable of separating a main body and a keypad.

As portable telephones are increasingly miniaturized and diversified, folder type portable telephones are becoming popular. However, the folding type portable phone has a relatively thick thickness compared to the flip type or the bar type, resulting in inconvenience in carrying.

In addition, a folding portable phone can use a keypad only by opening a folder, and a flip portable phone can use a keypad only by opening a flip. Accordingly, in order to make a phone call, there was an inconvenience in using the folder or flip open when dialing.

On the other hand, the mobile phone can be dialed by an ear-phone. However, only recent outgoing phone numbers can be redialed. Therefore, even in the case of using earphones, most of the time, the normal dialing other than redialing requires opening a folder or flip.

As described above, the conventional portable telephone is not only inconvenient to carry because the keypad is fixed to the main body, but in the case of the folding or flip type portable telephone, the folder or the flip has to be opened for dialing.

It is therefore an object of the present invention to provide a portable telephone which can be easily carried.

Another object of the present invention is to provide a portable telephone capable of dialing without opening a folder or flip.

It is another object of the present invention to provide a portable telephone capable of miniaturization and slimming.

1 is a block diagram of a portable telephone using a remote keypad according to an embodiment of the present invention.

The present invention for achieving the above object is configured to remotely use the keypad from the portable phone body. This allows the keypad to be removed from the body of the portable phone, enabling a very compact product design. In addition, a user can carry a portable telephone in a pocket or a bag and carry only a small keypad in his hand, thereby ensuring convenience of carrying. In addition, the keypad can be used regardless of opening / closing of the folder or flip of the portable telephone, thereby eliminating the need to open the folder or flip for dialing.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the annexed drawings, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a block diagram of a portable telephone using a remote keypad according to an embodiment of the present invention, which is divided into a telephone body 100 and a remote device 118. The telephone body 100 includes an antenna 102, a duplexer 104, a transceiver 106, a controller 108, a memory 110, a display device 112, and an external device connector 114. Configure. In the telephone body 100, the antenna 102, the duplexer 104, the transceiver 106, the controller 108, the memory 110, and the display device 112 are basically formed of a mobile phone. same. However, instead of removing the keypad from a typical portable phone, the external device connector 114 is added. The remote device 118 includes a connector 116, a keypad 120, a display device 122, and an earphone connecting portion 124, and an earphone 126 may be connected to the earphone connecting portion 124. The keypad 120, the display device 122, and the earphone connector 124 of the remote device 118 are connected to the keypad 116 by wire.

In the telephone main body 100, the control unit 108 performs voice signal and data processing for a conventional telephone call or data communication, and controls each part of the portable telephone of FIG. As the control unit 108, for example, in the case of a CDMA (Code Division Mutiple Access) type portable telephone, a Qualcomm MSM (Mobile System Mode) chip is used. The memory unit 110 connected to the controller 108 includes an electrically erasable and programmable ROM (EEPROM), a flash memory, a random access memory (RAM), and the like for processing and controlling the program of the controller 108. And various reference data, and provides a working memory of the controller 108. The display device 112 connected to the control unit 108 typically includes a liquid crystal display (LCD) to display various types of information as an image under the control of the control unit 108. The transceiver 106 connected between the duplexer 104 and the control unit 108 transmits and receives a radio frequency (RF) signal with the base station through the antenna 102 via the duplexer 104, based on the received RF signal. The digital signal of the band is converted and applied to the control unit 108. The baseband digital signal applied from the control unit 108 is converted into an RF signal and transmitted. The duplexer 104 is connected between the antenna 102 and the transceiver 106 to separate the path of the RF signal transmitted and received. An external device connector 114 connected to the control unit 108 is installed to connect with the connector 116 of the remote device 118.

In the remote device 118, the keypad 120 has various function keys and numeric keys for use of the portable telephone, similar to a conventional portable telephone. The key pad 120 provides the control unit 100 with a key signal according to a user's key operation in a state in which the connector 116 is connected to the connector 114 for an external device of the telephone body 100. The display apparatus 122 operates under the control of the control unit 108 in a state in which the connector 116 is connected to the connector 114 for the external device of the main body 100 to display various types of information of the portable telephone. The display apparatus 122 is the same as the display apparatus 112 of the telephone body 100. The earphone 126 is connected to the earphone connecting part 124.

With the connector 116 of the remote device 118 as described above connected to the connector 114 for the external device of the telephone body 100, the telephone body 100 is controlled by the control unit 108. Input a key signal from the 120, and displays a variety of information of the mobile phone through the display device 122, and inputs and outputs a voice signal through the earphone 124. That is, in the state where the remote device 118 and the control unit 108 are connected by using the external device connector 114 and the connector 116, the user dials the keypad 120 and dials the display device 122. You can check the number and check the current phone status.

Therefore, by separating the keypad 120 from the phone body 100 and using it remotely, it is possible to realize miniaturization and slimming of the product. And you can solve the hassle of using the phone only by opening the folder or flip, which is the disadvantage of the folding or flip phone. At the same time, the phone body 100 can be put in a bag or attached to the waist and carry only the remote device 118 in the hand, thereby eliminating the inconvenience of carrying a relatively heavy phone.

Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications can be made without departing from the scope of the present invention. In particular, the present invention is equally applicable to not only a folding type but also a flip or bar type portable telephone. In addition, in the embodiment of the present invention, the keypad 120, the display device 122, and the earphone connecting portion 124 has been included in the remote device 118, but the remote device 118 is configured only by the keypad 120. It can also be used. And in the embodiment of the present invention has been an example of connecting the remote device 118 to the telephone body 100 by wire, it can be used more conveniently when connected wirelessly using RF. Therefore, the scope of the invention should not be defined by the described embodiments, but should be defined by the equivalent of claims and claims.

As described above, the present invention can realize the miniaturization and slimming of the product by remotely using the keypad from the telephone body, and has the advantage of using the telephone without opening a folder or flip. And there is an advantage that you can avoid having to carry a heavy phone.

Claims (3)

In the portable telephone, A remote device having a connector, a keypad having various function keys and numeric keys for use of the portable telephone, wherein the keypad is wired to the connector; And a telephone body for inputting a key signal from the keypad, the portable telephone having a connector for connecting to the connector. In the portable telephone, A remote device having a connector, a keypad having various function keys and numeric keys for use of the portable telephone, and a display device for displaying various information, wherein the keypad and the display device are wired to the connector; A remote keypad provided with a connector for an external device for connecting with the connector, inputting a key signal from the keypad, and displaying various information of the portable telephone through the display device Using a mobile phone. In the portable telephone, A connector, a keypad connected by wire to the connector and having various function keys and numeric keys for use of the portable telephone, a display device for displaying various information of the portable telephone, and an earphone connecting portion for connecting earphones Remote device having a, A telephone main body including a connector for an external device for connecting with the connector, inputting a key signal from the keypad, displaying various information of the portable telephone through the display device, and inputting / outputting a voice signal through the earphone; A portable telephone using a remote keypad, characterized in that it comprises a.