SYSTEM AND METHOD OF FREQUENCY CALIBRATION IN A LINKED COMPRESSION-EXPANSION (LINCOMPEX) SYSTEM,申请号CA19902018174-传众专利搜索

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发明名称	SYSTEM AND METHOD OF FREQUENCY CALIBRATION IN A LINKED COMPRESSION-EXPANSION (LINCOMPEX) SYSTEM
摘要	A linked compressor-expander (Lincompex) circuit for use in telecommunications utilizes a frequency compensation circuit to frequency shift the total bandwidth of the whole communication channel to eliminate single side band "duck-talk" and data distortion in the transmitting of a complex waveform due to frequency drift or the detuning of the transmitter/receiver system. The demodulator includes an expander for expanding the compressed voice or data signal and a control tone conversion circuit for converting the received control tone into a frequency signal to be used by the expander. The control tone conversion circuit also determines the frequency error of a combination information waveform so that the frequency compensation circuit can carry out the proper frequency shifting process. A fading regulator is also provided to remove any audible level variations not removed by the automatic gain control circuitry in the receiver.
申请公布号	CA2018174(A1)	申请公布日期	1990.12.09
申请号	CA19902018174	申请日期	1990.06.04
申请人	LEVEQUE, JAMES H.	发明人	LEVEQUE, JAMES H.
分类号	H04B14/00;H04B1/64;(IPC1-7):H04B7/00	主分类号	H04B14/00
代理机构		代理人
主权项
地址

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