Patent
Placing a computer system into a sleeping state
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TLDR
In this article, a computer system enters or exits a sleeping state, such as the ACPI “S 1 ” state, in response to a sleep or wake event, and a PMI signal, when asserted, causes the processor to halt program execution.Abstract:
A computer system enters or exits a sleeping state, such as the ACPI “S 1 ” state, in response to a sleep or wake event. Upon detecting the sleep or wake event, a system component generates a sleep or wake signal that instructs the computer to enter or exit the sleeping state. This sleep or wake signal is of a type to which the computer's processor does not respond. Therefore, a PMI signal is asserted in response to the sleep or wake signal. The PMI signal, when asserted, causes the processor to halt program execution.read more
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Patent
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References
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Patent
ACPI sleep control
TL;DR: In this paper, a power management event signal POWER_PME and an SCI interrupt are used to detect the change in power supply state by the internal battery or the external power supply, and the current system state changes to another system state.
Patent
Method and apparatus for a computer power management function including selective sleep states
TL;DR: In this article, the authors propose a power saving feature in a computer system such as a desktop computer using the Windows™ operating system, which includes one or more "sleep" buttons which selectively reduce power consumption to subsystems based on the status of various consumer devices which share the subsystems with a computer function of the system.
Patent
Apparatus and method for reducing power consumption in a computer system
TL;DR: In this article, a processor is coupled to the power supply and the clock signals in response to a periodic interrupt signal, a non-periodic interrupt or a bus request from a peripheral device.
Patent
Control of computer system wake/sleep transitions
Louis B. Hobson,John D. Battles +1 more
TL;DR: In this article, a method to configure a device for remote management that is transparent to an advanced configuration and power interface (ACPI) operating system is described, which includes configuring a device in a computer system when a transition between power states is being effected by the Advanced Configuration and Power Interface operating system including the step of causing the computer system to enter a non-ACPI mode in response to the transition being effected.
Patent
Apparatus for controlled switching of a microcomputer to standby mode
TL;DR: In this paper, a voltage regulator connected to a microcomputer is switched from main power to standby power by a monitoring integrated circuit in response to a switch off by the control circuit after receiving a switchoff command, from an ignition switch, and only after the computer has been reset.