Wake-up system, near-field communication device and wake-up method

Abstract

The present application discloses a wake-up system, a near field communication device and a wake-up method. The wake-up system includes: a receiving circuit, adapted to obtain an antenna sensing signal; a detection circuit, adapted to provide a wake-up signal according to the amplitude of the antenna sensing signal and the carrier frequency, wherein, in the low power consumption mode, when the amplitude of the antenna sensing signal is When it is greater than or equal to the threshold and the carrier frequency is consistent with the predetermined frequency, the wake-up signal is in an active state, so that the subsequent load circuit controlled by the wake-up signal is switched from the low power consumption mode to the working mode. The wake-up system effectively reduces the probability of the subsequent load circuit being woken up by mistake, and ensures the wake-up reliability.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, to a wake-up system, a near-field communication device and a wake-up method. Background technique [0002] With the development of wireless communication technology and the continuous improvement of living standards, mobile terminals such as smart phones are becoming more and more popular, and have become indispensable communication tools in daily life. Generally, in many electronic devices using wireless communication technology (such as mobile phones, tablet computers, wearable devices, etc.), in order to prolong battery life and reduce power consumption, they usually enter a low power consumption mode when they are not in use, and when communication is required , to wake up the system to wake up the post-load circuit in the electronic device for communication. [0003] In an existing communication system, a commonly used wake-up method is: the wak...

AI Technical Summary

Problems solved by technology

However, the external field strength is easily affected by the surrounding environment (such as metals, wireless charging devices, etc.). When there is an interference signal in the external environment, if the amplitude of the interference signal meets certain conditions, it will cause errors in the subsequent load circuit. wake

[0004] Therefore, in order to solve the problem of false wake-up of the post-stage load circuit caused by interference signals, it is expected to provide a further improved wake-up system to avoid the problem of false wake-up of the post-stage load circuit

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