Abstract: A method to motorize bladeset rotation angle of a shutter including the following steps: resetting the bladeset to an origin point position at first when a start instruction is received, rotating the bladeset to a given target angle with respect to the origin point, and calculating a residual angle deviation to continuously rotate the bladeset to the given target angle when an instruction of the given rotation angle is received again during the operation. Further, a device provided to motorize bladeset rotation angle of a shutter includes an input interface for inputting instructions, a sensor for sensing an origin point position of the bladeset, a driver for driving the bladeset to rotate, and a controller for calculating and controlling the operation of the driver according to the origin point position and target angle, such that the bladeset is controlled to be rotated to the required angle.

Abstract: A wireless remote control circuit with dual processing units and a method is provided, which includes a signal receiving unit, a first and a second processing unit. The first processing unit is connected to the signal receiving unit and switches between an activation mode and a sleep mode at a predefined time. The second processing unit is connected to the first processing unit and is preset in the sleep mode. The first processing unit provides a voltage to activate the signal receiving unit during the activation mode, and transmits a resume signal after obtaining a control signal. Then, the second processing unit enters an activation mode after it receives the resume signal, and enters the sleep mode again after its internal logic circuit completes its operation, so as to reduce the complexity of using a single processing unit to design a circuit and avoid huge power consumption of the circuit.