Storage Suspension Control for Image Forming Device Lifespan
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Solution Overview
Problem
Image forming devices face limitations in power-saving control due to restricted startup frequencies of non-volatile storage devices like hard disk drives, leading to premature service life and reduced user convenience when frequently subjected to recovery processes.
Innovation Solution
An image forming device with a suspension control unit that restricts the execution of suspension processes when the recovery process frequency exceeds a specified threshold, and cancels restrictions when the frequency is lower than a second threshold, thereby managing the power-saving control to extend the lifespan of storage devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the image forming device executes power-saving control by suspending devices when suspension conditions are satisfied, then power consumption is reduced, but the recovery process frequency increases which reduces the lifespan of non-volatile storage devices
Solution Approach 1:
The control unit monitors the recovery process frequency and uses this feedback to dynamically adjust the suspension control strategy. When the recovery frequency exceeds a predetermined threshold, the control unit determines that the suspension condition should not be executed, thereby preventing further wear on the storage device while maintaining power savings when appropriate
Solution Approach 2:
The system dynamically changes its power-saving behavior based on the current state of the storage device. The suspension control is not static but adapts in real-time based on the monitored recovery frequency, transitioning between active power-saving mode and protected mode to optimize both energy consumption and device lifespan
2Ease of operation
If the image forming device frequently executes recovery processes to respond to process requests, then user convenience is maintained, but the non-volatile storage device reaches end of service life prematurely
Solution Approach 1:
The control unit continuously monitors recovery frequency and uses this information to make intelligent decisions about suspending the storage device. This feedback mechanism allows the system to balance user convenience with device protection by only suspending when recovery frequency would be excessive
Solution Approach 2:
The system changes the operational parameters of the storage device based on usage patterns. By monitoring recovery frequency and adjusting the suspension decision threshold, the system adapts the storage device's operational characteristics to extend its service life while maintaining acceptable user convenience
Data Source
AI summary
The history record unit, in the non-volatile storage device, records recovery history information showing a history of the recovery process. The suspension control unit, when the recovery process' frequency specified based on the recovery history information exceeds a first reference frequency, restricts execution of the specific suspension process which is in response to a satisfaction of the suspension condition. Further, the suspension control unit, when the recovery process' frequency specified based on the recovery history information is lower than a second reference frequency, which is lower than the first reference frequency, under a situation where the specific suspension process' execution is restricted, cancels the restricting of the specific suspension process' execution.