Deep sleep awakening method of android device

Abstract

The invention discloses a deep sleep awakening method of an android device, and the method is characterized in that besides a running state, a shutdown state and a dormant state, the android device is also provided with a deep sleep state, when staying at the running state, the android device can enter the deep sleep state through the operation, when staying at the deep sleep state, the android device can be awakened to the running state through the operation, when the android device enters the deep sleep state, irrelevant hardware, service and application are firstly closed, the android device enters the deep sleep state after the padlock of a power supply lock is forbidden, when the android device is awakened, the padlock of the power supply lock is firstly allowed, and relevant hardware and service are enabled to enter the running state. Under the deep sleep state, the device can really enter a low power consumption mode, a majority of peripheral interrupts are not responded, and a good energy-saving effect is realized; and the shutdown state can be temporarily substituted by the deep sleep state, so that the speed of the device entering a shutdown state is accelerated, and the speed of the device restoring from the shutdown state is fast.

Description

technical field [0001] The invention relates to Android device power management technology, in particular to a method for waking up an Android device from deep sleep. Background technique [0002] Android (Android) is an open source mobile operating system solution based on Linux platform announced by Google on November 5, 2007. The platform consists of Linux kernel, dalvik virtual machine, third-party open source basic library, application framework, and core applications. . Due to its good development and powerful functions, Android is currently widely used in consumer electronic devices. [0003] Traditional Android machines only have three states: shutdown, running, and sleep. The switching between the above three states is as follows: figure 1 shown. [0004] The booting process from shutdown to running state includes bootloader guidance, Linux kernel loading, native service startup, package manager scanning, application startup and other links. On existing devices...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the current Android device takes a long time from shutting down and starting the Android system to normal operation. In sleep mode, it is often impossible to enter the low-power mode because the upper-layer application holds a wakelock lock, resulting in a large system power consumption.

[0007] In order to improve the above defects, the existing solutions usually write the operating status of the system into a non-volatile medium during the shutdown process, and then load and start the system when the system is turned on. The disadvantage of this is that the startup speed is still very slow and save The method of reloading the system image does not support the higher version of the Linux kernel. At the same time, the method of saving the system image and loading it will also cause high pressure on the external memory, or may cause the loss of user setting information

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