Remote AC Power Cycling for Computing Subsystem Reset
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Solution Overview
Problem
Traditional methods of turning a computing device 'off' do not reliably change the state of individual subsystems, as they continue to receive AC power, potentially leaving them in error states.
Innovation Solution
Implementing a mechanism for remotely controlling AC power to subsystems within a computing device, allowing for predictable control over their operational states through power cycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional power off method is used, then the computing device appears non-responsive to user input, but the subsystems continue to receive AC power and may remain in error states
Solution Approach 1:
The patent segments the power control by introducing a separate power control circuit that can independently control AC power to individual subsystems. This allows the main computing device to be in a user-perceived off state while specific subsystems can have their power independently controlled to resolve error states, thus resolving the contradiction between ease of operation and reliability.
2Productivity
If AC power is continuously supplied to subsystems, then the subsystems remain operational and responsive, but error states may persist and prevent proper resetting
Solution Approach 1:
The patent implements periodic power control by enabling the power control circuit to periodically interrupt AC power to subsystems. This periodic action allows subsystems to be reset to a known good state by cycling power off and on, resolving persistent error states while maintaining the ability to restore operational responsiveness, thus balancing productivity and reliability.
3Reliability
If remote AC power control is implemented, then predictable control over subsystem states is achieved, but the device complexity increases
Solution Approach 1:
The patent introduces a power control circuit as an intermediary component between the AC power source and the subsystems. This intermediary provides predictable remote control capability over subsystem power states without requiring complex control mechanisms within the subsystems themselves, thus achieving reliability improvement with minimal increase in overall device complexity.
Data Source
AI summary
A computing device permits distribution of power received from an external power source to one or more subsystems of the computing device. The computing device receives input requesting a power control operation and, responsive to the input, interrupts the distribution of the power to at least one of the subsystems.