HDD Power Control via Operation Counting to Extend Lifespan
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Solution Overview
Problem
The challenge is to manage the number of power supply on/off operations for hard disc drives (HDDs) to prevent exceeding the durability limit, while also implementing power-saving measures in image forming apparatuses, where frequent power-offs are desired to reduce power consumption.
Innovation Solution
An electronic device with a storage device and multiple instruction units that count and manage the power supply off operations, ensuring the HDD power supply is turned off only when necessary to avoid exceeding the upper limit of on/off operations, and delaying power-off timings based on the counted number of operations to extend the HDD's lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the HDD power supply is frequently turned off to suppress power consumption, then power saving is improved, but the number of turning on/off operations increases and may exceed the durability limit
Solution Approach 1:
The control unit performs preliminary actions by predicting future power consumption states and proactively managing power supply operations before the durability limit is reached. The system forecasts when power consumption will exceed thresholds and pre-adjusts power supply timing to balance power saving goals with durability constraints, preventing excessive on/off operations while maximizing energy efficiency.
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring the number of power supply on/off operations and comparing it against the predetermined durability limit. When the operation count approaches or reaches the limit, the feedback signal triggers the control unit to modify power supply decisions, reducing the frequency of power-off operations to preserve HDD lifespan while still achieving power saving objectives within safe operational boundaries.
2Adaptability or versatility
If multiple instruction units independently control power supply off operations, then power saving control flexibility is improved, but accurate management of the total number of off operations becomes difficult
Solution Approach 1:
The patent merges the power supply control functions of multiple instruction units into a unified management system. The control unit consolidates power-off instructions from various sources (main control unit, sub-control units) and centrally manages the counting and coordination of all power supply operations. This merging ensures accurate tracking of the total off operation count while preserving the flexibility of multi-unit control architecture.
Solution Approach 2:
The control unit acts as an intermediary between multiple instruction units and the HDD power supply system. It receives power-off requests from various instruction units, coordinates their execution, and maintains a centralized count of total operations. This intermediary role ensures that despite multiple independent control entities, the system achieves precise measurement and management of the cumulative power supply off operation count.
Data Source
AI summary
An electronic device includes a storage device and a plurality of instruction units. The plurality of instruction units respectively instruct to turn off a power supply of the storage device. At least one instruction unit among the plurality of instruction units instructs to turn off power supply to the storage device in accordance with a total of the number of power supply off operations for the storage device respectively instructed by the plurality of instruction units.