Information Processing Apparatus Sleep State Management
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Solution Overview
Problem
Existing information processing apparatuses face a trade-off between reducing power consumption and return time when transitioning between sleep states, as applying a single idle time to both frequently and infrequently used time zones leads to either increased power consumption or prolonged return times.
Innovation Solution
Implementing two distinct idle times corresponding to frequently and infrequently used time zones, allowing the apparatus to transition from a shallow sleep state to a deep sleep state accordingly, thereby reducing both power consumption and return time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a long idle time is applied to the information processing apparatus, then the return time to active state is reduced in frequently used time zones, but power consumption cannot be reduced in infrequently used time zones
Solution Approach 1:
The patent divides the idle time parameter into two distinct segments: a first idle time for frequently used time zones and a second idle time for infrequently used time zones. This segmentation allows the system to apply appropriate idle time values based on the specific time zone, enabling short return times during frequent use periods while achieving deep sleep transitions and power consumption reduction during infrequent use periods.
Solution Approach 2:
The system dynamically adjusts the idle time parameter based on the detected time zone. The processor identifies whether the current time falls within a frequently used time zone or an infrequently used time zone, and automatically selects the appropriate idle time value. This dynamic adaptation resolves the contradiction by making the idle time flexible rather than fixed, allowing optimization for both return time and power consumption under different operating conditions.
2Use of energy by moving object
If a short idle time is applied to the information processing apparatus, then power consumption is reduced in infrequently used time zones, but return time is prolonged in frequently used time zones
Solution Approach 1:
The patent segments the idle time configuration into two distinct values tailored to different usage patterns. The first idle time (longer duration) is assigned to frequently used time zones to ensure quick return to active state, while the second idle time (shorter duration) is assigned to infrequently used time zones to enable deep sleep transitions and reduce power consumption. This segmentation eliminates the need to compromise either parameter across all scenarios.
Solution Approach 2:
The system applies different idle time qualities to different time zones based on their usage characteristics. Instead of using a uniform idle time value globally, the processor determines the appropriate idle time locally for each time zone context. This local quality approach allows optimization of return time for frequently used periods while optimizing power consumption for infrequently used periods, resolving the contradiction through context-specific parameter tuning.
Data Source
AI summary
An information processing apparatus balances the reduction of return time with the reduction of power consumption in accordance with the use status of a user and a time zone in which it is scheduled to be used. The information processing apparatus includes a processor. The processor is configured to: enter a first sleep state when transition is performed from an active state to an idle state; transition to a second sleep state having a longer return time to the active state than the first sleep state if there is not an operation of the user for a first idle time when entering the first sleep state before a previously set scheduled use-end time after a previously set scheduled use-start time; and transition to the second sleep state if there is not an operation of the user for a second idle time shorter than the first idle time when entering the first sleep state before the scheduled use-start time after the scheduled use-end time.