US Patent No. 9,532,129

EARPHONE LINE CONTROL DEVICE AND EARPHONE


Patent No. 9,532,129
Issue Date December 27, 2016
Title Earphone Line Control Device And Earphone
Inventorship Kuan-Hong Hsieh, Guangdong (CN)
Boqing Lin, Guangdong (CN)
Xiaohong Sun, Guangdong (CN)
Assignee 1MORE INC., Shenzhen, Guangdong (CN)

Claim of US Patent No. 9,532,129

1. An earphone line control device comprising a power supply management unit, a filter unit, a control unit, a first resistance,
a first diode, a first switch, a second resistance and a second switch, wherein;
a first end of the power supply management unit, a first end of the filter unit, an end of the first resistance, and an end
of the second resistance are all connected to a power supply;

the other end of the first resistance is connected to an anode of the first diode, a cathode of the first diode is connected
to an end of the first switch, the other end of the second resistance is connected to an end of the second switch, the other
end of the first switch and the other end of the second switch are both connected to ground;

a first end and a third end of the control unit are respectively connected to the cathode of the first diode and the other
end of the second resistance, a second end of the control unit is connected to ground, a forth end of the control unit is
connected to the other end of the filter unit;

a second end of the power supply management unit is connected to ground, a third end of the power supply management unit is
connected to the control unit ;

the first switch corresponds to the first resistance, the second switch corresponds to the second resistance; when the first
switch or the second switch is turned on, the control unit outputs a first preset coded pulse signal, the first resistance
or the second resistance divides voltage with an internal circuit of a mobile phone and generates a different voltage value;
when the first switch or the second switch is turned off, the control unit outputs a second preset coded pulse signal.