KR20040037452A - Mobile Phone Using Connected EEPROM with Connector - Google Patents

Abstract

PURPOSE: A mobile communication terminal using a connecting type EEPROM(Electrical Erasable and Programmable Read Only Memory) is provided to allow a user to easily change a mobile terminal by maintaining data of user information stored in an EEPROM of the mobile terminal as it is. CONSTITUTION: An RF transceiver(210) receives an RF(Radio Frequency) signal from an antenna, demodulates it to output it to a controller(240), and converts a signal received from the controller(240) into an RF signal to output it to a base station. A display unit(220) receives an image signal from the controller(240) and displays an image. A key pad unit(230) generates a key input signal and outputs it to the controller(240). The controller(240) outputs an EEPROM select signal to a memory unit(250) according to an inputted key input signal, and converts information data received from the memory unit(250) into an image signal to output it to the display unit(220). The memory unit(250) includes multiple detachable EEPROMs(254) and outputs the information data stored in the EEPROM(254) as selected according to an EEPROM select signal of the controller(240), to the controller(240).

Description

Mobile Phone Using Connected EEPROM with Connector}

The present invention relates to a mobile communication terminal using a connecting type EEPROM (Electrical Erasable and Programmable Read Only Memory), and more particularly, by installing an EEPROM, which is a user-only memory used in the mobile communication terminal, in a connecting method. The present invention relates to a mobile communication terminal using a connecting EEPROM capable of being detachable.

Generally, three types of memory used in a mobile communication terminal are flash ROM (Read Only Memory), static random access memory (SRAM), and electrically erasable programmable read only memory (EEPROM). Classified as

Flash ROM is the memory that stores the main software program that drives the overall operation of the mobile terminal. SRAM is the memory that stores the data about the call such as call processing data and timer data. EEPROM is the text message which is user information. And a memory for storing a telephone number and the like.

The EEPROM is a nonvolatile memory (memory) that stores information stably for a long time without a power supply. The EEPROM is a modified memory of an erasable and programmable read-only memory (EPROM), and the data once written can be electrically erased and rewritten. . That is, it is possible to write or erase data by electrically changing the charge of the elements constituting the chip, so that the program can be reprogrammed with the memory embedded in the system. Rewriting usually takes much more time than a random access memory device (RAM), has a smaller storage capacity, and has a limited number of rewrites, but the data recorded in the device can be stored for a long time without power.

1 is a block diagram illustrating a general mobile communication terminal.

As shown in FIG. 1, the configuration of a general mobile communication terminal receives a radio frequency (RF) signal received from an antenna, outputs the RF signal to the RF receiver 103, and outputs a transmission signal received from the RF transmitter 104. A duplexer 102 for outputting through an antenna, a control unit 101 for controlling modulation and demodulation of data, and an overall operation of a mobile communication terminal, an RF receiver 103 for processing a received signal and outputting the received signal to the control unit; Under the control of 101, a carrier removal signal for removing a received carrier signal in response to a reception channel is generated and output to the RF receiver 103, and a transmit carrier signal is generated to output an output carrier signal to the RF transmitter 104. The generated frequency synthesizer 105 and the voice signal received from the voice processor 107 and the frequency synthesizer 105 under the control of the controller 101 in the call mode. An RF transmitter 104 for synthesizing a carrier signal and outputting the duplexer 102 and a coded voice received from the RF receiver 103 are demodulated and outputted to a speaker through a switch unit 108, which is then electrically transmitted by a microphone. A voice processing unit 107 for encoding an electric voice signal received through the switch unit 108 and outputting the converted signal to the RF transmitting unit 104; and a program and a user for operating a mobile communication terminal. A memory unit 106 for storing information, a switch unit 108 for selecting one of a speaker and a microphone, a display unit 109 for displaying the state and operation of the mobile communication terminal, and a key matrix structure (not shown) And a numeric key for dialing and various function keys, and generate a key input signal corresponding to a key input by a user and output the numeric key to the controller 101 and various functions. It comprises a keypad unit 110 including a neungki.

In addition, the memory unit 106 includes a ROM (116) for storing a program necessary for operation of the mobile communication terminal, an EEPROM (117) for storing text messages, telephone numbers, and the like, which are user information, and call processing information. And a RAM 118 that stores timer information.

However, in general, the EEPROM 117, which stores information of the user in the mobile communication terminal, is fixed to the substrate of the mobile communication terminal. Therefore, when replacing it with another mobile terminal, the information stored in the previous mobile terminal cannot be used again. Therefore, the trouble of having to re-enter the above information and the capacity cannot be increased even if the capacity of the EEPROM is insufficient. There was a problem.

The present invention has been proposed to solve the above problems, and provides a mobile communication terminal using a connecting type EEPROM that can be attached and detached by using a connector to the EEPROM fixed to the substrate of the mobile communication terminal. have.

1 is a block diagram showing a general mobile communication terminal,

2 is a block diagram showing a mobile communication terminal using a connecting type EEPROM according to an embodiment of the present invention;

Figure 3 is an exemplary view showing that when the user replaces the mobile communication terminal in accordance with the present invention to install the EEPROM previously used in a new mobile communication terminal.

Explanation of symbols on the main parts of the drawings

210: RF transceiver 220: display unit

230: keypad portion 240: control unit

250: memory

A mobile communication terminal using the connecting method EEPROM of the present invention for achieving the above object, in the mobile communication terminal, provided with a numeric key and various function keys for dialing, a key input signal corresponding to a key input from the outside A keypad unit for generating a; A control unit which outputs an EEPROM selection signal according to a key input signal input from the keypad unit; And a memory unit including a plurality of removable EEPROMs, and outputting information data stored in the selected EEPROM according to the EEPROM selection signal of the controller to the controller.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, FIG. 2 is a block diagram showing a mobile communication terminal using a connecting type EEPROM according to an embodiment of the present invention. The mobile communication terminal using the connecting type EEPROM according to the present invention includes an RF transceiver 210 and a display unit. 220, a keypad 230, a controller 240, and a memory 250.

The RF transceiver 210 receives a radio frequency (RF) signal received from an antenna, demodulates the RF signal and outputs the demodulated signal to the controller 240 to be described later. The RF signal is received from the controller 240 to be described later. It converts the signal and outputs it to the base station.

In addition, the display unit 220 receives an image signal from the controller 240 to be described later, and serves to display the image as recognized by the user.

Meanwhile, the keypad 230 has a key matrix structure (not shown), includes a numeric key for dialing and various function keys, and generates a key input signal corresponding to a key input by a user so as to be described later. 240).

In addition, the controller 240 outputs an EEPROM selection signal to the memory unit 250 to be described later according to the key input signal input from the keypad unit 230, and outputs the information data received from the memory unit 250 to be described later. It converts into an image signal and outputs it to the display unit 220, and transmits and receives with the base station through the RF transceiver 210.

Meanwhile, the memory unit 250 includes a plurality of removable EEPROMs 254, and outputs information data stored in the selected EEPROM 254 according to the EEPROM selection signal of the controller 240 to the controller 240. Play a role. Here, the memory unit 250 will be described in detail as follows.

The RAM 251 mounted in the memory unit 250 stores call processing information and timer information, and outputs the call processing information and the timer information to the controller 240 at the request of the controller 240. It plays a role.

In addition, the ROM 252 mounted in the memory unit 250 stores a program necessary for the operation of the mobile communication terminal, and at the request of the control unit 240, the ROM (252) stores the program necessary for the operation of the call mobile terminal. 240).

Meanwhile, the EEPROM selection unit 253 mounted in the memory unit 250 receives the EEPROM selection signal from the controller 240 and provides a switching function according to the EEPROM selection signal.

In addition, the plurality of EEPROMs 254 mounted in the memory unit 250 may be detachable by installing a connector, and according to the switching of the EEPROM selecting unit 253, a text message and a phone number which are user information stored therein. Etc. are outputted to the controller 240 through the EEPROM selector 253. Herein, the connector may be in the form of a carkit connector.

Referring to the operation of the mobile communication terminal using the above-described EEPROM of the present invention will be described.

FIG. 3 is an exemplary view illustrating the installation of an EEPROM previously used by a user in a new mobile communication terminal when the mobile communication terminal is replaced according to the present invention, which is referred to as a mobile communication terminal A for convenience of description. It shows that the existing EEPROM can be inserted into a new mobile communication terminal (called mobile terminal B for convenience of description).

When the user wants to replace the terminal, the user separates the plurality of EEPROM 254 from the old terminal, and connects to the newly replaced terminal through the connector. Subsequently, when a key input signal for reading data from a plurality of connected EEPROMs 254 is input through the keypad 230, the controller 240 stores a memory according to the key input signal input from the keypad 230. The unit 250 outputs the EEPROM selection signal. Next, the EEPROM selection unit 253 mounted in the memory unit 250 connects the EEPROM 254 mounted in the old terminal to the control unit 240, and the control unit 240 stores the user stored in the EEPROM 254. Information such as text messages and telephone numbers will be used.

In addition, when the capacity of the EEPROM is insufficient, as shown in FIG. 3, the capacity of the memory may be additionally supplemented by using the same standard EEPROM. In this case, it must be assumed that the EEPROM used in the mobile communication terminals should be shared and a connector for an additional EEPROM should be installed. The plurality of EEPROMs 254 are connected in parallel and one of the plurality of EEPROMs is selected under the control of the controller 240. The selected EEPROM can be powered from the address line using the pins of the connector.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

The present invention as described above, the mobile communication terminal can be replaced while maintaining the data of the user information (for example, phone number and text messages) stored in the EEPROM of the mobile communication terminal to facilitate the user's device conversion effect There is.

Claims (3)

In the mobile communication terminal, A keypad unit having a numeric key for dialing and various function keys and generating a key input signal corresponding to a key input from the outside; A control unit which outputs an EEPROM selection signal according to a key input signal input from the keypad unit; And A memory unit including a plurality of removable EEPROMs and outputting information data stored in the selected EEPROM according to the EEPROM selection signal of the controller to the controller; Mobile communication terminal using a connecting method EEPROM, characterized in that it comprises a. The method of claim 1, wherein the memory unit, An EEPROM selection unit which receives the EEPROM selection signal from the controller and provides a switching function according to the EEPROM selection signal; And A plurality of EEPROMs having a connector and being detachable and outputting a text message and a telephone number, which are user information stored therein, to the controller through the EEPROM selecting unit according to switching of the EEPROM selecting unit. Mobile communication terminal using a connecting method EEPROM characterized in that it comprises a. The method according to claim 1 or 2, The plurality of EEPROMs are shared with each other. Mobile communication terminal using a connecting method EEPROM characterized in that.