One-button control circuit used for startup and shutdown and screen locking of portable equipment and method thereof

Abstract

The invention provides a one-button control circuit used for startup and shutdown and screen locking of portable equipment and a method of one-button controlling of startup and shutdown and screen locking. The one-button control circuit comprises a power supply which supplies power to the circuit, a light touch button, a power supply management unit, a micro-control unit and a control circuit. The power supply management unit is connected with the micro-control unit. The light touch button is connected with the micro-control unit through the control circuit. The light touch button realizes one-button startup, shutdown and screen locking of the equipment by the control circuit through the power supply management unit and the micro-control unit. The advantages and the beneficial effects of the one-button control circuit are that one light touch button is adopted, the characteristics of two chips of the micro-control unit and the power supply management unit are combined, and the control circuit formed by two N-MOS transistors is adopted so that the functions of one-button startup, shutdown and screen locking can be realized, the number of the button can be reduced, the resources of the MCU and the PMU can be fully utilized, and the one-button control circuit also has obvious advantages in multiple aspects of size, cost and user experience.

Description

technical field [0001] The invention relates to a control circuit, in particular to a single-key control circuit and method for turning on and off and locking the screen of a portable device. Background technique [0002] With the application of a large number of emerging data services, the power consumption level of portable devices has been greatly increased, resulting in a significant reduction in standby time. In order to extend the standby time, the design of the built-in battery is becoming more and more popular, and higher requirements are put forward for the size and function of the device. [0003] At present, the typical implementation modes of traditional equipment startup and shutdown are as follows: figure 1 shown. The traditional lock screen button is realized by collecting the signal of the external light touch button through the GPIO of the MCU, and the software controls the lock screen process. The typical implementation mode is as follows: figure 2 show...

AI Technical Summary

Problems solved by technology

In this way, a power control switch and a light touch switch are required to control the startup, shutdown, and screen lock of the device. The user experience for portable devices is poor, and the number of buttons is large, which is not conducive to reducing the volume of the cost device, and the control cost is also high.

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