Dynamic Touch Scan Rate Adjustment for Power Conservation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional mobile devices consume excessive power due to high touch scan rates, leading to reduced battery life, especially in applications with minimal user interaction.
Innovation Solution
Implement a method to dynamically adjust touch scan rates on touch-sensitive panels, scanning at a higher rate for interactive events and a lower rate for non-interactive events, such as full-screen video playback, to conserve power without compromising user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high touch scan rates are used to improve touch input accuracy, smoothness, and latency, then touch performance is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the touch scan rate based on the current application state and user interaction level. When a application is in full-screen mode or during video playback, the scan rate is reduced from the default high rate to a lower rate, thereby reducing power consumption while maintaining adequate touch responsiveness for the current usage context.
Solution Approach 2:
The patent changes the operational parameter (scan rate) of the touch sensor based on different usage scenarios. By modifying the scan rate parameter from high to low depending on whether the device is in an interactive application or media playback mode, the system optimizes the balance between touch performance and power consumption.
2Loss of time
If high touch scan rates are used to improve responsiveness, then latency is reduced, but battery life is reduced
Solution Approach 1:
The system dynamically adjusts the touch scan rate based on the current application state and user interaction level. When a application is in full-screen mode or during video playback, the scan rate is reduced from the default high rate to a lower rate, thereby reducing power consumption while maintaining adequate touch responsiveness for the current usage context.
Solution Approach 2:
The system implements periodic monitoring of application states and adjusts the touch scan rate accordingly. The scan rate is periodically changed between high and low rates based on whether the current application requires rapid touch response or can tolerate slower scanning, thus optimizing battery life while maintaining necessary responsiveness.
Data Source
AI summary
Embodiments of the present invention are capable of lowering touch scan rates in a manner that conserves power resources without compromising performance or user experience thereby promoting battery life. Embodiments of the present invention perform touch scan operations using a touch sensitive panel at a first scan rate. In response to certain events automatically detected within the mobile device (e.g., when a full-screen video is being displayed), embodiments of the present invention may then perform touch scan operations at a second scan rate that is slower than the first scan rate that also consumes less power compared to the first scan rate. As such, for events or use cases in which limited user interaction with the touch sensitive panel is typical, embodiments of the present invention may lower touch scan rates in a manner that still enables users to interact with applications (e.g., interaction with playback controls during video playback) and promotes efficient power usage and extends battery life.