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A dual-interface sim card and contactless communication method

A non-contact communication, non-contact technology, applied in the field of communication, can solve problems such as the impact of non-contact communication, and achieve the effect of improving radio frequency performance

Active Publication Date: 2015-08-19
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the 13.65MHz radio frequency signal is easily interfered by metal substances, when the dual-interface SIM card is placed in the wireless user terminal, in the process of sending and receiving radio frequency signals, the radio frequency signal in the non-contact interface is affected by the mobile phone battery, metal SIM card slot and The impact of the metal base is more serious, thus affecting the contactless communication

Method used

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  • A dual-interface sim card and contactless communication method
  • A dual-interface sim card and contactless communication method
  • A dual-interface sim card and contactless communication method

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Experimental program
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Embodiment Construction

[0019] In the embodiment of the present invention, in order to reduce the interference of the SIM card slot and the metal base in the dual-interface SIM card to the non-contact radio frequency performance, the radio frequency signal processing part (contactless radio frequency chip, RF antenna and matching circuit) are integrated into the contactless front-end module to keep away from the interference of the metal SIM card slot and the metal base, thereby improving the contactless RF performance of the dual-interface SIM card.

[0020] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the prote...

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Abstract

The invention discloses a dual interface SIM card and a non-contact communication method, wherein the dual interface SIM card comprises a non-contact front end module and a SIM card module, which are connected in a wired or wireless mode. The non-contact front end module is used for receiving an analog signal sent from a radio-frequency field, transforming the analog signal into a digital signal, sending the digital signal to the SIM card module, receiving a digital signal sent from the SIM card module, and transforming the digital signal into an analog signal; the SIM card module is used for contact communication processing, receiving and processing a digital signal sent from the non-contact front end module, and returning the processing result in digital signal form to the non-contact front end module. By utilizing the SIM card and the method of the invention, the non-contact radio-frequency performance of dual interface SIM card is improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a dual-interface SIM card and a non-contact communication method. Background technique [0002] Mobile e-commerce is the application of e-commerce to the field of mobile communication technology, and it is one of the future development trends of e-commerce. In the new generation of mobile e-commerce, the technology of short-distance wireless communication (non-contact communication) is applied to mobile terminals. Dual-interface SIM (Subscriber Identity Module, Subscriber Identity Module) card is a combination of short-range wireless communication and traditional mobile communication. The card has two interfaces, contact and non-contact. The contact interface realizes the wireless communication function of the traditional SIM card. , The non-contact interface realizes the short-distance wireless communication function. [0003] The architecture of the existing dual-interf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/07G06K17/00H04W88/02
Inventor 黄更生朱本浩葛欣
Owner CHINA MOBILE COMM GRP CO LTD