专利名称：Signum signal generator发明人：Norman W. Parker申请号：US06/431425申请日：19820930公开号：US04462114A公开日：19840724
摘要：A single carrier is amplitude-modulated by a signal which is a transform (as thesine function) of the audio signal, and one set of sidebands is removed. In a receiver, thesignal can be recovered by first deriving the Hilbert transform of the sine transform, andmultiplying it by the signum of the derivative of the original audio signal to obtain thecosine transform. The sine and cosine transforms are then decoded to obtain the originalaudio signal. A circuit for deriving the signum of the derivative of a signal is disclosed.
申请人：MOTOROLA, INC.
代理人：Margaret M. Parker,James S. Pristelski,James W. Gillman
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