Multi-value demodulating system
专利汇可以提供Multi-value demodulating system专利检索，专利查询，专利分析的服务。并且PURPOSE:To attain accurately identification operation of a demodulator by providing some addition circuits to an identification device to detect the level fluctuation at the input side of the identification device and adjust sufficiently the gain of an amplifier. CONSTITUTION:A QAM digital signal applied with amplitude modulation to a phase shift keying modulation is received by a demodulator DM. This received signal is amplified by an amplifier IFA with automatic gain control circuit and the amplified signal is applied to an orthogonal demodulator MIX. A reproduced carrier from a carrier reproducing circuit CR is impressed to the democulator MIX and the output of the demodulator MIX is applied to the identification device comprising four identification devices DS via a base band amplifier BBA. The output of the identification device is operated logically by an operation control circuit CTL and its output C is impressed to the amplifier IFA via a loop filter LF as a control signal. Further, the gain is adjusted in response to the fluctuation of the input level of the amplifier IFA to attain accurately the identification operation of the demodulator DM.，下面是Multi-value demodulating system专利的具体信息内容。
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