Power Management Settings Retention Across Sleep States
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Solution Overview
Problem
Portable information handling systems fail to adjust power management settings when transitioning between sleep states, leading to unexpected battery consumption due to lack of knowledge about system configuration changes during sleep states.
Innovation Solution
A method and apparatus that monitor power conditions during sleep states, generate a wakeup event upon power changes, and adjust power management settings accordingly, allowing the system to reenter the sleep state with optimized power settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the system enters sleep state to save power, then battery consumption is reduced, but the system cannot detect or respond to power condition changes occurring during sleep
Solution Approach 1:
The system performs preliminary actions by saving power state information before entering sleep mode, and preliminarily configures wakeup conditions. This allows the system to quickly respond to power changes without prolonged awareness during sleep, maintaining low power consumption while enabling adaptive response when needed.
Solution Approach 2:
The patent implements a feedback mechanism where the system monitors power conditions during sleep state through hardware triggers, detects changes in power configuration, and responds by waking up to adjust power management settings. This closed-loop feedback enables the system to adapt to power condition changes while minimizing wake time to preserve battery life.
2Adaptability or versatility
If the system remains awake to monitor power conditions, then power management settings can be adjusted in real-time, but battery consumption increases
Solution Approach 1:
Instead of continuous monitoring, the system employs periodic action by entering sleep state and only waking up when specific power condition changes occur. Hardware monitoring components periodically check power states and trigger wakeups only when necessary, enabling real-time adaptability while minimizing active monitoring time to reduce battery consumption.
Solution Approach 2:
The system implements self-service by using hardware-level triggers and automatic wakeup mechanisms that monitor power conditions without requiring continuous software intervention. The hardware automatically detects power changes and initiates wakeup events, allowing the system to maintain adaptability while the processor remains in low-power state most of the time.
3Loss of energy
If the system wakes up frequently to check power settings, then power management can be optimized, but system performance and sleep duration are reduced
Solution Approach 1:
The patent applies local quality by implementing selective monitoring of specific power conditions rather than comprehensive system monitoring. Only critical power state changes trigger wakeups, allowing the system to maintain long sleep durations while still optimizing power management for the most important power configuration changes.
Solution Approach 2:
The system performs preliminary configuration of power management settings before entering sleep state, and only wakes up when actual power condition changes occur that require reconfiguration. This preliminary setup reduces the frequency of wakeups needed, thereby extending sleep duration while maintaining power optimization capabilities.
Data Source
AI summary
A method for adjusting power management setting of the operating system while the system is in a sleep state. When a user attaches or removes power to the information handling system while the system is in a standby mode of operation, the sleep state system generates a wakeup event. During the resume process, the operating system checks a current power state of the information handling system and compares the current power state to the power state settings present when the information handling system entered the sleep state, resets the power state settings if necessary and then causes the information handling system to reenter the sleep state.