A low-power one-to-two Bluetooth headset

Abstract

The present invention provides a low-power one-to-two Bluetooth headset, the Bluetooth headset includes a main headset and a secondary headset, the primary headset has a built-in first Bluetooth chip, including a first Bluetooth physical layer; the secondary headset has a built-in second Bluetooth The chip includes a second Bluetooth physical layer; wherein the first Bluetooth physical layer includes a first 2.4GHz radio frequency module and a first 10MHz radio frequency module, and the second Bluetooth physical layer includes a second 10MHz radio frequency with the same structure as the first 10MHz radio frequency module Module, the second 2.4GHz radio frequency module with the same structure as the first 2.4GHz radio frequency module; the first 2.4GHz radio frequency module communicates with the audio playback device, the first 10MHz radio frequency module performs microwave communication with the second 10MHz radio frequency module, and microwave To switch between 2.4GHz and 10MHz, the first Bluetooth chip in the main earphone and the second Bluetooth chip in the auxiliary earphone of the present invention communicate through the Bluetooth protocol, and the main earphone switches the 2.4GHz radio frequency to 10MHz radio frequency to effectively reduce power consumption , effectively increasing the usage time of the headset.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a low-power consumption one-to-two Bluetooth headset. Background technique [0002] With the progress of society and the improvement of people's living standards, earphones and speakers have become indispensable daily necessities in people's lives. Traditional wired headphones are connected to playback devices through wires, but they restrict the wearer's movement, especially in sports situations. Ordinary Bluetooth headsets cancel the connection between the headset and the playback device, but there is still a connection between the left and right ears. True Wireless Stereo (TWS) headphones and speakers came into being. [0003] The working principle of the existing TWS earphones is that the main earphone is connected to the playback device and the auxiliary earphone at the same time through the Bluetooth one-to-two technology. The audio data of the other channel is sen...

AI Technical Summary

Problems solved by technology

[0004] Due to the serious interference on the 2.4GHz working frequency band of Bluetooth, for example, the WiFi signal in the same frequency band will occupy a large bandwidth, and the structure of the human head will seriously attenuate the 2.4GHz signal between the left and right ears, which will cause The air signal quality deteriorates during the interval, which eventually leads to stuttering or increased delay

[0005] The existing Bluetooth one-to-two technology transmits between the main earphone and the auxiliary earphone through near-field magnetic induction (NFMI), such as NXP's NFMI solution. The disadvantage is that NFMI uses a set of independent transmission protocols and requires a separate protocol stack. There is no connection with Bluetooth. The integrated single-chip solution has large area and power consumption, and the low transmission bit rate will reduce the sound quality

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