Invention Grant
US08150332B2 Method and system for low-frequency communication 失效
低频通信方法与系统

Method and system for low-frequency communication
Abstract:
The disclosure relates to a method of communication between a control device and an operator device, including the generation of a control signal and transmission of the control signal, where the control signal is generated in the form of a symmetric signal and is then filtered by the transmission system.
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