METHODS, SYSTEMS, AND DEVICES FOR PRIVATE RADIO COMMUNICATION BASED ON POSITION RELATIVE TO A USER

原文（中国語）

Methods, systems, and devices for private radio communication in frontline work environments are disclosed. In some embodiments, private radio communication is provided by a radio device configured to decrease the audio output volume from the radio device’s speaker when the radio device is positioned near or against the head of a user. The radio device is configured to determine the position of the radio device relative to the user’s head via one or more sensors. In some embodiments the sensors include a photodetector, and the radio device decreases the volume of the audio output based on the incident light detected by the photodetector. In some embodiments, the radio device shifts volumes based further on input from a push-to-talk (PTT) button. In some embodiments the radio device shifts between a PTT mode of operation and a non-PTT mode of operation based on proximity to the user’s head.