Touch Screen Controller Mode Switching via Pressure Threshold
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Solution Overview
Problem
Portable electronic devices with touch screens face delays in mode transitions between low-power and normal modes, leading to suboptimal touch responsiveness and increased battery consumption.
Innovation Solution
Incorporating a pressure sensor to dynamically switch the operating mode of the touch screen based on pressure values, allowing for immediate mode transitions and adjusting the report rate of touch data accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the touch screen operates in low-power mode to save battery, then power consumption is reduced, but touch responsiveness is degraded due to delayed mode transition
Solution Approach 1:
The pressure sensor performs preliminary detection of touch pressure before the touch screen needs to respond. When pressure exceeding the threshold is detected, the system proactively transitions from low-power mode to normal mode in advance, ensuring that the touch screen is already in high-responsiveness state when actual touch input occurs, thus eliminating the delay between touch and response
Solution Approach 2:
The pressure sensor acts as an intermediary component between the user's touch action and the touch screen's mode transition. It detects pressure changes and triggers the mode switch independently, allowing the system to respond to touch intentions before the touch screen itself needs to process the input, thereby improving responsiveness without continuous power consumption
2Speed
If the touch screen frequently switches to normal mode to improve touch responsiveness, then touch responsiveness is improved, but battery power is consumed more than necessary
Solution Approach 1:
The system applies different quality levels (power consumption states) to different situations by using pressure-based detection. Instead of uniformly maintaining normal mode for all potential touch scenarios, the pressure sensor enables the system to locally activate high-responsiveness mode only when and where actual touch pressure is detected, optimizing the balance between responsiveness and power consumption
Solution Approach 2:
The system changes the operating parameter (mode) of the touch screen based on the pressure value parameter detected by the pressure sensor. By monitoring pressure as a dynamic parameter and switching modes according to threshold comparisons, the system adapts its power consumption and responsiveness characteristics to match actual usage conditions, avoiding unnecessary power expenditure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances user experience by improving response speed and touch responsiveness while minimizing power consumption by enabling real-time mode switching and dynamically adjusting data transmission rates based on touch intensity.
Implementation Method 1
a pressure sensor that detects a pressure value of the touch input
Data Source
AI summary
An electronic device according to an embodiment disclosed in the present specification may comprise a processor, a touch panel for receiving a touch input, a pressure sensor for detecting a pressure value of the touch input, and a controller for transmitting to the processor touch data corresponding to the touch input. The controller responds to the touch input if the pressure value of the touch input is a threshold value or greater, switches an operation mode of the controller from a first mode to a second mode, and can transmit the touch data to the processor in the second mode. Besides this, various embodiments are possible as identified in the specification.