Portable computer and method of controlling power saving mode of portable computer

Abstract

A portable computer and a method of controlling a power saving mode of the portable computer, in which an embedded controller directly turns off system power without system wake up operation in a process of turning off the system power or switching a power saving mode when battery power is decreased. The computer includes a control unit for notifying whether a power saving mode is a hybrid sleep mode when the portable computer enters the power saving mode; and an embedded controller for detecting whether the remaining amount of a battery decreases below a threshold value or a predetermined period of time has passed after the computer enters the power saving mode to perform hibernation or turn off system power, if the power saving mode notified from the control unit is the hybrid sleep mode.

Description

technical field [0001] The present invention relates to a portable computer and a method of controlling the power saving mode of the portable computer. In the present invention, the embedded controller will directly shut down the system power, so there is no need to wake up the system during the shutdown process, or switch when the battery power is reduced. It is a power-saving mode, and there is no need to wake up the system at this time. Background technique [0002] Although different operating systems support different power-saving modes in laptops, in most cases, laptop power-saving modes typically consist of S3 (Suspend to Random Access Memory (RAM): Standby mode) and Power management at the S4 (Suspend to Hard Disk: Maximum Power Saving Mode or Hibernation) levels, which are defined through the Advanced Configuration and Power Interface (ACPI). [0003] The S3 level is a power saving mode that continuously supplies power to the random access memory (the main memory o...

AI Technical Summary

Problems solved by technology

[0014] That said, there is a problem that if a low battery condition is found in hybrid hibernate mode, power will be consumed unnecessarily in order to restore the system to normal operation mode

[0015] Additionally, an unexpected system shutdown may occur due to power consumption in a low battery state

[0016] Also, if the laptop is set to hibernate and enter S4 level power saving mode if the battery power is low in hybrid hibernation mode, the problem is that when the system returns to normal operation mode, the battery will be drained. The power is completely drained, so the system powers down (S5 level of ACPI power management: longer boot time than if the computer came back from S4 level, and the user environment before entering power saving mode cannot be restored)

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