Method, chip and terminal capable of achieving access of multi-mode communication modules to user identification card

Abstract

The invention discloses a method, a chip and a terminal capable of achieving access of multi-mode communication modules to a user identification card. The terminal comprises the control chip, the user identification card and the communication modules with at least two modes, the user identification card and the communication modules are connected with the control chip through interfaces respectively, and the control chip is used for receiving a request of a current communication module for accessing the user identification card, accessing the user identification card according to the request when the user identification card is determined to be in a non-access state and sending an access result returned by the user identification card to the current communication module. According to the method, the chip and the terminal capable of achieving access of the multi-mode communication modules to the user identification card, the problem of an instability phenomenon caused by the fact that signals are unstably processed during switching of analog switches when the multi-mode communication modules access the user identification card is solved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method, a chip and a terminal for realizing a multi-mode communication module accessing a user identification card. Background technique [0002] Dual-mode terminals mainly refer to mobile terminal devices that are compatible with signals of different standards at the same time, such as 3G and 4G. Due to the large differences in communication standards of different standards, it is difficult to make single-chip products in the early stage. Most of the earlier multi-mode terminal products are dual-chip solutions. A major problem to be solved in the dual-chip solution is the simultaneous access of multiple communication modules to one subscriber identification card. The subscriber identity card includes: SIM (Subscriber Identity Module) card or USIM (Universal Subscriber Identity Module) card. [0003] In the prior art, an analog switching scheme is adopted to realize simultaneous acc...

AI Technical Summary

Problems solved by technology

[0005] The method, chip and terminal for realizing the access of the multi-mode communication module to the user identification card provided by the present invention are to solve the problem that the processing signal is not stable when the analog switch is switched during the process of the multi-mode communication module accessing the user identification card, resulting in instability.

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