AUTOMATIC TRACKING CAMERA SYSTEM

摘要

PURPOSE: To send sound around the object toward a camera and to control remotely a video camera from the object by superimposing a desired signal onto a phase detection signal and sending the result through a single channel. CONSTITUTION:A microphone 1 collects the sound around the object and generates a sound signal, which is subject to time axis compression by a time axis compression circuit 2 and the result is fed to an adder circuit 4. A phase detection signal generating circuit 3 generates a rectangular phase detection signal of a prescribed frequency, the phase detection signal is fed to the adder circuit 4, where the signal is added to the sound signal from the time axis compression circuit 2. The output signal of the adder circuit 4 is modulated by a modulation circuit 5, and fed to a speaker 6.