Digital discussion of the system of the infrared - conference and its main unit units as well as its discussion a

摘要

The discussion of the system of the digital infrared - conference relates to a main unit of the system, a discussion of the infrared - conference and infrared - transmitter / receiver, characterized in that the a / d - serialisation circuit of the audio frequency, the digital said encoding - and modulation circuit, the downstream of this a / d - serialisation circuit of the successively audio frequency have been connected, in these conference - discussion a units have been integrated; in that said digital employ laser engraving - and demodulation circuit, the d / a - serialisation circuit of the audio frequency that these digital decoding circuit downstream of this digital demodulation circuit as well as the audio mixture circuit between this digital decoding circuit and d / a - serialisation circuit of the audio frequency, or after it has been connected, in the main unit of the system of the infrared - conference have been integrated.