Access Token Update Scheduling for Power-Saving Image Processing
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Solution Overview
Problem
When an image processing apparatus operates in power-saving mode and multiple access tokens approach their expiration times, the frequent transitions to normal mode for token updates shorten the power-saving operation time.
Innovation Solution
An information processing apparatus with a power-saving function that stores access token expiration times and updates tokens automatically when necessary, minimizing transitions to normal mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access tokens are updated individually when each expiration time is reached, then token validity is maintained, but the apparatus frequently transitions to normal mode shortening power-saving operation time
Solution Approach 1:
The patent combines multiple individual token update operations into a single batch update operation. Instead of transitioning to normal mode separately for each access token expiration, the system aggregates all pending token updates and executes them simultaneously in one normal mode transition, thereby merging multiple short interruptions into one longer interruption that allows extended power-saving operation between updates.
Solution Approach 2:
The patent performs preliminary actions by accumulating token update requests during power-saving mode and preparing them for batch processing. The system monitors multiple access tokens and their expiration times, pre-collecting update needs without executing updates immediately, thereby avoiding frequent mode transitions and enabling longer power-saving periods.
2Reliability
If the apparatus transitions to normal mode frequently for token updates, then all access tokens remain valid, but power consumption increases due to mode switching
Solution Approach 1:
The patent merges multiple separate energy-consuming mode transitions into a single transition by batch-processing token updates. This consolidation reduces the total energy loss associated with frequent normal mode activations, as the system pays the energy cost of one transition rather than multiple separate transitions.
Solution Approach 2:
The patent implements periodic batch updates of access tokens instead of continuous individual updates. By establishing a periodic update cycle where multiple tokens are refreshed together at scheduled intervals, the system reduces energy consumption while maintaining authorization service availability throughout the power-saving periods.
3Reliability
If multiple access tokens are managed separately with individual update timings, then each token's expiration is handled, but the complexity of mode management increases
Solution Approach 1:
The patent merges the management of multiple separate token update schedules into a unified batch update process. Instead of controlling individual mode transitions for each token, the system consolidates token management into a single coordinated process that handles multiple tokens together, thereby reducing the complexity of mode transition control while maintaining reliable expiration management.
Solution Approach 2:
The patent creates a universal token update mechanism that can handle multiple different access tokens with different expiration times through a single batch processing function. This multi-functional update system manages diverse token types and schedules using one standardized approach, simplifying the overall management complexity.
Data Source
AI summary
An information processing apparatus is provided. The information processing apparatus has a power-saving function for changing a mode of the information processing apparatus from a normal mode to a power-saving mode in which a power consumption amount is smaller. When a predetermined condition is satisfied, the apparatus obtains an access token and an expiration time of the access token from the authorization server, stores an expiration time of an obtained access token and the access token in association with each other, and returns, if the information processing apparatus is in the power-saving mode, to the normal mode and updating at least some of obtained and stored access tokens when an expiration time of at least one access token out of the obtained and stored access tokens is reached.