Subscriber identity module (SIM) card detection control device of mobile terminal
A mobile terminal and control device technology, applied in telephone communication, electrical components, branch office equipment, etc., can solve problems such as communication confusion
Inactive Publication Date: 2015-06-17
盐城杰诺机械有限公司
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Problems solved by technology
Existing mobile phones do not detect whether a 1.8V SIM card or a 3.0V SIM card is inserted. If there is a dual-card dual-standby mobile phone, there may be communication confusion
Method used
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[0021] The present invention provides a SIM card detection and control device for a mobile terminal. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022] see figure 1 The SIM card detection control device of the mobile terminal provided by the present invention is especially used when the mobile terminal is a mobile phone, how to identify whether the inserted SIM card is the first SIM card or the second SIM card, and can detect the working state of the SIM card . In this embodiment, the first SIM card is a 1.8V SIM card, and the second SIM card is a 3.0V SIM card. Such as figure 1 As shown, the SIM card detection control device includes a powe...
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The invention discloses a subscriber identify module (SIM) card detection control device of a mobile terminal. The SIM card detection control device comprises a power management chip, a first detecting module, a second detecting module and a work state detecting module. The power management chip outputs a corresponding first voltage and a corresponding second voltage according to an inserted first SIM card or an inserted second SIM card, a corresponding abnormal voltage is output according to the fact that whether the SIM cards are abnormal or not. The first detecting module compares the first voltage and the second voltage and then outputs a first identifying voltage. The second detecting module compares the first voltage and the second voltage on which partial pressure is conducted and then outputs a second identifying voltage. The work state detecting module outputs corresponding detecting signals according to the abnormal voltage, the second voltage, the first identifying voltage and the second identifying voltage. Whether the first SIM card or the second SIM card is inserted is judged according to the voltage values of the first identifying voltage and the second identifying voltage, and the work state of the SIM cards can be judged by the voltage values of the detecting signals.
Description
technical field [0001] The invention relates to the technical field of mobile communication, in particular to a SIM card detection and control device for a mobile terminal. Background technique [0002] At present, with the development and popularization of smart phones, mobile phones are becoming more and more important to users. The SIM card of the user using various business functions of the mobile phone has been in an overloaded working state, resulting in some abnormal problems with the SIM card. Only the mobile phone can detect the SIM card; or when the user frequently changes the SIM card due to business needs when using the mobile phone, he needs to shut down the phone, take out the card, insert another SIM card, and then turn it on again; or the SIM card has no service and needs to be re-inserted multiple times Such as SIM card. Existing mobile phones cannot carry out the self-repair function of mobile phones with regard to the above-mentioned problems. [0003] ...
Claims
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IPC IPC(8): H04M1/725
Inventor 章金玉黄树伟
Owner 盐城杰诺机械有限公司