Walkie-talkie ear microphone with autoexcitation function

Abstract

The invention relates to an interphone earphone with the self-excitation function, which comprises a receiver, a transmitter, an interphone interface and a self-excitation control circuit, wherein the self-excitation control circuit comprises a transmitter linear detector for detecting output signals of the transmitter, a voltage comparer for comparing the signals detected by the transmitter linear detector with a threshold and transmitting an excitation trigger signal, a retriggerable delay for receiving the excitation trigger signal and controlling a transmitter switch of the interphone, and a talk switch interface connected with the output terminal of the retriggerable delay. The interphone earphone with the self-excitation function can achieve self-excitation to control a talk switch without pressing the talk switch of the interphone. The retriggerable delay can automatically transmit a talk switch signal of the interphone when the user starts to talk, and automatically shut off the talk switch signal in a time period (such as 0.5 second) set after stopping talking, thereby achieving continuous voice communication without influencing normal work of the user.

Description

technical field [0001] The invention relates to a communication device, in particular to a communication device used in conjunction with a walkie-talkie, in particular to a headset for the walkie-talkie. Background technique [0002] As we all know, the walkie-talkie must press the call switch (PTT switch) when making a call, but in many occasions, the user cannot free his hand to press the PTT switch to make a call, such as a glider pilot, a firefighter in an emergency rescue, and a hotel that is being settled. Front desk clerk etc. If they need to make a call, they can only stop what they are doing, which can be dangerous sometimes. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a walkie-talkie headset with self-activation function, which can control the call switch by self-activation when the user speaks. [0004] The technical solution adopted by the present invention to solve the problems of the technolog...

AI Technical Summary

Problems solved by technology

[0002] As we all know, the walkie-talkie must press the call switch (PTT switch) when making a call, but in many occasions, the user cannot free his hand to press the PTT switch to make a call, such as a glider pilot, a firefighter in an emergency rescue, and a hotel that is being settled. Front desk clerk, etc.

They can only stop what they are doing if they need to make a call, which can be dangerous sometimes

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