Abstract: Apparatus and method for recognizing counterfeit currency are disclosed. The apparatus comprises capture unit for capturing a digital image of a currency bill to be recognized, a data storage for storing parameters, features, weights, and a feature identification instruction, feature-capturing unit for capturing features of the bill, neural network recognition unit for comparing the features of the bill with that of an authentic bill by performing an back propagation algorithm and using a plastic perception network as a training kernel, and output means for displaying a comparison result.

Abstract: A digitally modulated power control device comprises an input unit for inputting an AC voltage signal and a control signal; a signal detection unit for detecting the AC voltage signal and a frequency thereof and generating a first trigger signal in response to the AC voltage signal; a control unit for receiving the control signal and the first trigger signal, processing the first trigger signal in response to the control signal, and generating a second trigger signal; and an output unit including an AC switching unit. The output unit can receive the second trigger signal for activating the AC switching unit and output an adjusted AC voltage signal for adjusting an output power of an AC load.