Double-frequency multi-protocol multifunctional NFC (near field communication) integrating system and application method

Abstract

The invention discloses a double-frequency multi-protocol multifunctional NFC (near field communication) integrating system and an application method. A first sensing antenna is connected with a high-frequency NFC card reader chip; the high-frequency NFC card reader chip reads high-frequency NFC label information and transmits the high-frequency NFC label information to an intelligent terminal through a Bluetooth module via an ARM (advanced RISC machine) main control chip; the high-frequency NFC label information of the intelligent terminal is transmitted to the ARM main control chip through the Bluetooth module, is transmitted into a double-interface intelligent card chip, and is matched and simulated into high-frequency NFC labels through a second sensing antenna; low-frequency label information is read by a low-frequency card reader chip and a third sensing antenna and is transmitted to the intelligent terminal through the Bluetooth module via the ARM main control chip; a low-frequency card simulation control module, the ARM main control chip and the third sensing antenna realize the low-frequency sensing card function, and are configured into low-frequency card at any formats and protocols. The integrating system and the application method cover the high-frequency / low-frequency RFID application and expand the NFC application function, convenience is brought to the switching between the card reader mode and the card mode, and the experience effect of the NFC application function is improved.

Description

technical field [0001] The invention relates to a dual-frequency multi-protocol multifunctional near-field communication integrated system and an application method. Background technique [0002] Near field communication, also known as NFC (Near Field Communication), is a new type of proximity sensing communication technology derived from radio frequency identification (RFID) technology. The current conventional NFC technology adopts 13.56MHz (high frequency) resonance frequency, and the communication protocol conforms to the four standards of ISO14443A / ISO14443B / ISO15693 / SonyFelica. In mobile phones with NFC function, there are built-in NFC card reader chips and induction antennas, which can mainly achieve the following application functions: such as figure 1 As shown, the built-in high-frequency NFC card reader chip 1 of the mobile phone is connected to the baseband CPU processor 2 of the mobile phone through the SPI bus, and the sensing antenna 3 is connected to the NFC ...

AI Technical Summary

Problems solved by technology

In other words, the current NFC specification has not yet fully covered all RFID industry applications, resulting in defects in NFC applications

At the same time, all NFC mobile phones, NFC protective cases and NFC headphone jack accessories on the market are mainly working in the card reader mode by default. Professionals or professional companies have the ability to set the NFC function to the card mode, which greatly limits the rapid expansion of NFC applications

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