Partial Wake States for Power Saving Electronic Devices
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Solution Overview
Problem
Electronic devices that implement the Advanced Configuration and Power Interface (ACPI) specification often waste power by activating all components when transitioning from a power saving state to a working state, as they require only some components for specific operations, leading to inefficient power consumption.
Innovation Solution
The device transitions from a power saving state to a partial wake state based on received commands, where only the necessary processing resources are activated, while others remain in a power saving state, using a processor and communication device to determine the required resources for each operation and adjust power states accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If all components are activated when transitioning from power saving state to working state, then the device can perform any operation, but power consumption increases
Solution Approach 1:
The patent segments the processing resources into multiple groups that can be independently activated. Instead of powering on all components when transitioning from a power-saving state, the system selectively activates only the specific group of processing resources needed for the particular operation, thereby maintaining operational capability while reducing power consumption.
Solution Approach 2:
The patent implements dynamic power management where the power state of processing resources is adjusted in real-time based on operational requirements. The system can transition between different power states (fully powered on, partially powered on, or in power-saving mode) depending on the specific task at hand, making the power consumption adaptive rather than static.
2Reliability
If all components are activated to ensure device functionality, then operational reliability is maintained, but unnecessary power is consumed by idle components
Solution Approach 1:
The patent applies partial action by activating only the necessary portion of processing resources required for a given operation rather than all resources. The system determines the minimum set of components needed to reliably perform the task and activates only those, avoiding the energy waste associated with powering idle components while maintaining sufficient functionality.
Solution Approach 2:
The patent implements local quality by applying different power states to different groups of processing resources based on their specific operational requirements. Each group can be in a different power state (active or power-saving) depending on whether it is needed for the current operation, allowing the system to maintain reliability where needed while conserving energy where not needed.
Data Source
AI summary
An electronic device includes a communication device to receive a command from another electronic device while the electronic device is in a power saving state, where the command is different from a wake command; and a processor to transition the electronic device from the power saving state to: a partial wake state when the command indicates a first operation; and a full wake state when the command indicates a second operation.