Control device and method of mobile screen and mobile screen

Abstract

The invention provides a control device and method of a mobile screen and the mobile screen, and relates to the field of energy conservation. A first power supply circuit supplies power to a switching circuit and a first controller; the first power supply circuit and the second power supply circuit are connected through a switching circuit; the second power supply circuit supplies power to the second controller; the first controller monitors the working state of the second controller, when the second controller is in a standby state, a power supply signal is sent to the switching circuit, the second controller enters a dormant state, when the second controller is in a shutdown state, a power-off signal is sent to the switching circuit, and when the second controller is in a normal state, the power supply signal is sent to the switching circuit; and the second controller controls the mobile screen to work and feeds back the working state of the second controller through the state sending end. The first controller is used for monitoring the working state of the second controller, the working state of the second controller can reflect the working state of the mobile screen, power is cut off in time when the mobile screen is shut down, the first controller enters the dormant state, power consumption of the product in the standby state and the shutdown state is reduced, and the endurance time of the product is prolonged.

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