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

A wake-up signal and control signal technology, applied in the direction of wireless communication, program control device, sustainable communication technology, etc., can solve the problems of false wake-up of the subsequent load circuit and false wake-up of the subsequent load circuit, so as to avoid false wake-up, Reduce the risk of repeated wake-up, high-precision effect
CN112506577BActive Publication Date: 2022-05-20北京紫光青藤微系统有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
北京紫光青藤微系统有限公司
Publication Date
2022-05-20

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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.
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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...

Claims

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