KR20040019784A - Mobile communication terminal included an external memory - Google Patents

Abstract

PURPOSE: A mobile communication terminal having an external memory is provided to transceive a signal with an external memory through an external interface, and to store data related to specific contents in the external memory when supplying various contents services, thereby overcoming restrictions on a memory capacity. CONSTITUTION: An internal memory(70) stores a database set for a user service and various contents. An external interface(80) exchanges a signal between a mobile communication terminal(100) and an external apparatus. An external memory(200) is connected with the mobile communication terminal(100) through the external interface(80), and stores the database. A modem and CPU unit(20) controls the external memory(200) through the external interface(80) according to signal standards defined for controlling the external memory(200), and stores the database related to specific contents in the external memory(200). The external interface(80) is a serial port or a USB port.

Description

Mobile communication terminal having an external memory {MOBILE COMMUNICATION TERMINAL INCLUDED AN EXTERNAL MEMORY}

The present invention relates to a mobile communication terminal having an external memory, and more particularly, an external memory that can overcome the limitation of the memory capacity built into the terminal when providing various content services by exchanging signals with the external memory through an external interface. It relates to a mobile communication terminal having a.

As is well known, in the early stages of the introduction of a mobile communication system, a voice call using a terminal was mainly used. However, due to the mobility / convenience of the terminal, not only voice calls but also wireless data are increasingly used. In addition to simple text messages, movies, dramas, video calls, and many other content can be enjoyed.

In addition, as the number of wireless data subscribers increases, operators are focusing on developing a lot of contents that meet the needs of various subscribers to generate revenue through wireless data subscribers. Standard work is actively underway.

As subscribers' demand for wireless data increases and various contents are developed, systems and terminals are laying the foundation for high-speed data services through commercialization of CDMA2000 1X, 1xEV-DO, and WCDMA.

In addition, due to the commercialization of a system suitable for high-speed data services, not only small text message contents but also large contents such as high-definition movies and dramas are generated. In order to improve the codec (Codec) technology is also being developed a lot, and the current resolution of the terminal has been developed, you can enjoy movies and dramas using the terminal with an excellent resolution.

Therefore, as the high-speed data market is activated in the future and the number of subscribers using these services increases, the development and service of a large amount of various contents will be activated.

However, the system does not have a big problem in capacity for providing such a content, but the terminal has a limited size so that the memory capacity is insufficient to store such content and provide a service desired by the subscriber.

The present invention has been proposed to solve such a conventional problem, and provides a mobile communication terminal that exchanges signals with an external memory through an external interface, thereby overcoming the limitation of the memory capacity built into the terminal when providing various content services. Its purpose is to help.

A mobile communication terminal having an external memory according to the present invention for realizing such an object is responsible for a function of exchanging signals between an internal memory storing a database set for user service and various contents, and a mobile communication terminal and an external device. An external interface unit, an external memory connected to the mobile communication terminal through the external interface unit to store the database, and controlling the external memory through the external interface unit according to a signal standard defined for controlling the external memory. And a modem and a CPU unit for storing the database related to a specific content in the external memory.

1 is a block diagram of a mobile communication terminal having an external memory according to the present invention;

<Description of the code | symbol about the principal part of drawing>

10: RF unit 20: modem and CPU unit

30: codec part 40: audio part

50: LCD 60: Keypad

70: internal memory 80: external interface

200: external memory 220: interface unit

240: ROM 260: SRAM

There may be a plurality of embodiments of the present invention. Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings. This embodiment allows for a better understanding of the objects, features and advantages of the present invention.

As shown in the block diagram of FIG. 1, the mobile communication terminal 100 having the external memory according to the present invention has an RF unit 10, a modem and a CPU unit 20, a codec unit 30, and an audio unit 40. ), LCD 50, keypad 60, internal memory 70 consisting of ROM 71 and SRAM 73, external interface 80, interface 220 and ROM 240 and SRAM 260 It consists of an external memory 200 consisting of.

The RF unit 10 modulates the signal received through the antenna to an appropriate level by RF modulation and outputs the signal to the modem and the CPU unit 20.

The modem and the CPU unit 20 receive the RF signal output from the RF unit 10 to demodulate the audio data and various information data on the carrier, and then convert the demodulated audio data and various information data into digital signals. And vocodes the converted digital signal and outputs the display control signal.

In addition, the modem and CPU unit 20 controls the ROM 240 and the SRAM 260 through the external interface unit 80 and the interface unit 220 according to a signal standard defined for the control of the external memory 200. Thus, data related to specific contents to be stored in the ROM 71 and the SRAM 73 are stored in the ROM 240 and the SRAM 260.

The codec unit 30 receives a digital audio signal output from the modem and the CPU unit 20, converts the digital audio signal into an analog signal, and outputs the analog audio signal to the audio unit 40.

The audio unit 40 amplifies the analog audio signal output from the codec unit 30 and converts the analog audio signal into a mechanical signal that can be heard by the user.

The LCD 50 serves as a display window for displaying to a user after receiving a display control signal from the modem and CPU unit 20.

The keypad 60 is composed of number buttons, symbol buttons, and other function buttons, and is used to input necessary information to a communication terminal, and serves to exchange signals with the modem and the CPU unit 20.

The ROM 71 of the internal memory 70 may electrically erase all contents, exchange signals with the modem and CPU unit 20, and store a database set for user service.

The SRAM 73 of the internal memory 70 serves to store the memory information as long as there is a power supply.

The external interface unit 80 is connected to the interface unit 220 of the external memory 200 to perform signal exchange between the mobile communication terminal 100 and the external memory 200. The external interface unit 80 may be implemented as a serial port and / or a USB port.

The interface unit 220 of the external memory 200 is connected to the external interface unit 80 of the mobile communication terminal 100 to perform signal exchange between the external memory 200 and the mobile communication terminal 100.

The ROM 240 of the external memory 200 exchanges signals with the modem and CPU unit 20, and serves to store a database set for user service while supplementing the function of the ROM 71. It can delete the contents.

The SRAM 260 of the external memory 200 exchanges signals with the modem and the CPU unit 20, and supplements the functions of the SRAM 73, and stores memory information in the limited power supply.

In the above description, but limited to one embodiment of the present invention, it is obvious that the technology of the present invention can be easily modified by those skilled in the art. Such modified embodiments should be included in the technical spirit described in the claims of the present invention.

As described above, the present invention may overcome the limitation of the memory capacity built into the terminal by exchanging a signal with the external memory through an external interface and storing data related to specific content in the external memory when providing various content services.

In addition, since the external memory is connected to the terminal through the serial port and / or USB port, it can be easily exchanged for other external memory. Accordingly, the user can enjoy the content stored in the exchanged external memory by exchanging the external memory containing the content, it is also possible to distribute the packaged external memory containing a variety of movies / games / dramas.

In addition, it is possible to commercialize various movies, games, dramas, etc. in an external memory, and through this market, terminals will play an increasingly vital role in life, and through this, the wireless data market is expected to be further activated.

Claims (2)

An internal memory for storing a database set for user service and various contents, An external interface unit for exchanging signals between a mobile communication terminal and an external device; An external memory connected to the mobile communication terminal through the external interface to store the database; A mobile communication having an external memory including a modem and a CPU unit for controlling the external memory through the external interface unit according to a signal standard defined for controlling the external memory to store the database related to a specific content in the external memory. terminal. The method of claim 1, The external interface unit is a mobile communication terminal having an external memory, characterized in that the serial port or a USB port.