Function controller serving as an automatic telephone answering machine in an audio/video component system
作者： Jeong Beom-Chae
DOI:
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摘要: A function controller functions as an automatic telephone answering system in audio/video component and serves to control the volume level of audio amplifier A/V by detection a ringing signal well other normally associated with system, such code designated switching using DTMF circuitry.
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