US 2017/0257692 A1 · Low-loss wireless stereo Bluetooth earphones

Abstract

Low-loss wireless stereo Bluetooth earphones, which relate to a technical field of communication, include: a left Bluetooth earphone and a right Bluetooth earphone; both the left Bluetooth earphone and the right Bluetooth earphone comprise an earphone shell; a master control PCB with a chip, and a speaker unit are mounted inside the earphone shell, a Bluetooth RF transceiver module, a power module and an antenna module are installed on the master control PCB, and the antenna module is connected to the master control PCB through an RF coaxial wire; a speaker is mounted at a front portion of the earphone shell; a hanger is provided at a middle portion of the earphone shell; and an antenna is mounted at a rear portion of the earphone shell; during wearing, the antenna extends backwards and is behind an auricle. During wearing, the antenna extends outwards to the back of the ear, which is not limited by the structure of the ear. A distance between the antennas of the left Bluetooth earphone and the right Bluetooth earphone is decreased, as well as a barrier caused by the head. According to measurement results, the RF path loss is 60 dB, which is improved by about 20 dB, thereby providing stable audio transmission to the Bluetooth earphones.

Claims21

Dependent claims

1-10. (canceled)

Low-loss wireless stereo Bluetooth earphones, comprising:

a left Bluetooth earphone and a right Bluetooth earphone, wherein the left Bluetooth earphone wirelessly communicates with the right Bluetooth earphone through Bluetooth;
both the left Bluetooth earphone and the right Bluetooth earphone comprise an earphone shell;
a master control PCB (printed circuit board) with a chip, and a speaker unit are mounted inside the earphone shell, the speaker unit is connected to the master control PCB;
wherein:
a Bluetooth RF (radio frequency) transceiver module, a power module and an antenna module are installed on the master control PCB, and the antenna module is connected to the master control PCB through an RF coaxial wire;
the master control PCB and a speaker of the speaker unit are mounted at a front portion of the earphone shell;
during wearing, the speaker presses against an auditory meatus of an ear;
a hanger is provided at a middle portion of the earphone shell for assisting hanging on the ear;
during wearing, the hanger is placed at a back of the ear;
an antenna of the antenna module is mounted at a rear portion of the earphone shell;
a first end of the RF coaxial wire is connected to the master control PCB, a second end thereof passes through the hanger and extends to the antenna, for being connected to the antenna module;
during wearing, the antenna extends backwards and is behind an auricle.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/786,548Filed 1 Apr 2015

Priority

CN 201410597710.730 Oct 2014

Published

7 Sep 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

G10K 11/17857
Methods, e.g. algorithms; Devices: geometric disposition, e.g. placement of microphones
G10K 11/17881
Using both a reference signal and an error signal: the reference signal being an acoustic signal, e.g. recorded with a microphone
H04R 1/1016
Earpieces; Attachments therefor ; Earphones; Monophonic headphones: earpieces of the intra-aural type
H04R 1/1041
Earpieces; Attachments therefor ; Earphones; Monophonic headphones: mechanical or electronic switches, or control elements

Low-loss wireless stereo Bluetooth earphones

Life of this patent

Low-loss wireless stereo Bluetooth earphones

Life of this patent

Abstract

Claims21