Countdown Timer Management via Single Instance Adjustment
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Solution Overview
Problem
Existing systems for managing countdown timers consume significant resources due to the need for frequent restarting, which occurs with each user interaction, leading to substantial energy and resource expenditure, especially when managing thousands of timers simultaneously.
Innovation Solution
A method and system that utilize a single countdown timer instance, adjusting its expiration time based on user interactions, eliminating the need for constant timer cancellation and rescheduling by calculating the remaining time difference and updating the timer accordingly, thereby minimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a countdown timer is restarted with each user interaction, then the timer accurately reflects user activity periods, but system resources and energy consumption increase significantly
Solution Approach 1:
Multiple timer operations are merged into a single continuous timer instance. Instead of creating and destroying timer objects with each user interaction, the system maintains one persistent timer that is continuously updated with new expiration times, combining multiple timer functions into a single resource.
Solution Approach 2:
The timer expiration time is calculated and set in advance based on the next expected user interaction. By pre-calculating the expiration time rather than waiting for the current timer to complete and then starting a new one, the system avoids the overhead of multiple timer initialization cycles.
2Ease of operation
If multiple timer instances are created for each user interaction, then timer management is simple and straightforward, but device complexity and resource usage increase
Solution Approach 1:
The system merges the functionality of multiple timer instances into a single timer object that persists across user interactions. This reduces the number of timer objects from potentially thousands to just one, simplifying memory management and reducing system complexity while maintaining the ability to track multiple time periods.
Solution Approach 2:
A single timer instance is made universal by allowing it to serve multiple purposes: tracking different user activity periods, managing session timeouts, and handling various time-based operations. The timer becomes a multi-functional resource that replaces multiple specialized timer instances.
3Reliability
If timers are frequently canceled and rescheduled, then user activity is accurately tracked, but processing overhead and resource expenditure increase
Solution Approach 1:
When user activity is detected, the system pre-calculates the new expiration time and immediately updates the timer without waiting for the current period to end. This preliminary calculation and immediate update approach maintains accurate activity tracking while avoiding the processing overhead of waiting for timer completion and then scheduling a new one.
Solution Approach 2:
The timer maintains continuous operation without interruption or cancellation. Instead of stopping and restarting the timer with each user interaction, the timer continuously counts down and is smoothly updated, eliminating the start-stop cycles that create processing overhead and maintaining uninterrupted time tracking.
Data Source
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AI summary
A method for managing a first countdown timer, the method comprising the steps of: receiving (201) a request to set the first countdown timer to a first time value; starting (202) the first countdown timer; receiving (203) a request to reset the first countdown timer; letting (204) the first countdown timer expire; setting up (205) a second countdown timer with the time being equal to said first time value minus a difference between said first countdown timer expiry time and said receiving of the request to reset the first countdown timer; starting (206) the second countdown timer.