SIM card accessing apparatus of mobile terminal

A technology for mobile terminals and access devices, applied in the direction of selection devices, electrical components, transmission systems, etc., which can solve problems such as increased costs and loss of mobile terminal space usage

Inactive Publication Date: 2005-02-02
INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, there is such a problem that the SIM card access device of the conventional mobile terminal shown in FIG. 2 must add a SIM card according to the number of each modem, which requires an increase in cost. In addition, there will be a lot of loss in the space usage of the mobile terminal.

Method used

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  • SIM card accessing apparatus of mobile terminal
  • SIM card accessing apparatus of mobile terminal
  • SIM card accessing apparatus of mobile terminal

Examples

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Embodiment Construction

[0018] An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Fig. 3 is a structural example diagram of a device for accessing a SIM card of a mobile terminal according to the present invention. As shown in the figure, in a dual-frequency dual-mode terminal with a SIM card, it is composed of the following parts: the first and second modems (22, 23), which request access to the above-mentioned SIM card (10), if the control Obtain permission, then accept clock signal input, exchange data synchronously with the data of above-mentioned SIM card (10); Multimedia processor (21), it supplies power to above-mentioned SIM card (10), according to above-mentioned the first modem (22) or the The SIM card access request of the modem (23) outputs the switch control signal and the above-mentioned clock signal, and grants control; the switch (24) switches the first and second modems (22, 23) and the SIM card according to ...

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Abstract

The invention relates to an accessing device of SIM card of the mobile terminal which enables each multi-media processor and each modem to access SIM card when a dual-frequency dual -module terminal using more than two modems is used. Thus, the accessing device is characterized in that a dual-frequency dual-module terminal with the SIM card comprises the following parts: a first modem and a second modem; when the two modems request to access the SIM card, if the control right is admitted, then the two modems receive the input of clock signals and synchronously exchange data with the SIM card data; a multi-media processor which supplies electricity to the SIM card and outputs switching control signals, the clock signals and admission control rights according the access request of the SIM card of the first modem or the second modem; a switcher which can switch the data paths of the first, the second modems and the SIM card.

Description

technical field [0001] The invention relates to a SIM card accessing device of a mobile terminal, which can enable a multimedia processor and each modem to access the SIM card when designing a dual-frequency dual-mode terminal using more than two modems. Background technique [0002] In general, the GSM (Global System for Mobile Communication-Global System for Mobile Communication) system for European mobile communication terminals using the time division multiple access method uses a Subscriber Identification Module (SIM; Subscriber Identify Module, hereinafter referred to as a SIM card). [0003] The aforementioned SIM card is a pluggable smart card (smartcard) on the mobile terminal, which is composed of a microprocessor and a memory chip, and stores various information of the owner of the SIM card. [0004] The above-mentioned SIM card investigates whether the user has already logged into the network. In order to prevent users who have not logged into the network from us...

Claims

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Application Information

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IPC IPC(8): H04B1/40H04W88/06
CPCH04B1/401H04W88/06
Inventor 崔丙俊
Owner INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
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