Touch Detection Refresh Cycle Segmentation for Display Noise Interference
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Solution Overview
Problem
The refresh rate of a display unit interferes with the accuracy of touch detection in intelligent electronic devices, degrading the user experience due to noise interference.
Innovation Solution
An information processing method and electronic device that sets a first period and a second period in the refresh cycle, where the touch detection unit is refreshed during the first period and the display unit is refreshed during the second period, preventing interference and ensuring accurate touch detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display unit is refreshed continuously to maintain display quality, then the display quality is improved, but the touch detection accuracy deteriorates due to noise interference from display refresh
Solution Approach 1:
The refresh cycle is segmented into two distinct periods: a first period where the touch detection unit is refreshed and the display unit is held static, and a second period where the display unit is refreshed and the touch detection unit is held static. This temporal segmentation eliminates the overlap between display refresh noise and touch detection, resolving the contradiction between display quality and touch detection accuracy.
Solution Approach 2:
The system implements periodic action by alternating between two operational modes in a cyclic manner. During the first period, touch detection operations are performed while the display remains static. During the second period, display refresh operations are performed while touch detection is suspended. This periodic alternation ensures both display quality and touch detection accuracy are maintained without mutual interference.
2Device complexity
If the touch detection unit and display unit share the same refresh cycle, then the system complexity is reduced, but the touch detection accuracy deteriorates due to interference from display refresh noise
Solution Approach 1:
The shared refresh cycle is segmented into two functional periods with distinct operations. The first period is dedicated to touch detection unit refresh and display hold, while the second period is dedicated to display unit refresh and touch detection hold. This segmentation maintains a single unified refresh cycle framework (low complexity) while eliminating interference through temporal separation (high accuracy).
Solution Approach 2:
The system uses periodic action to alternate between touch detection operations and display refresh operations within the same refresh cycle. By periodically switching the operational focus between the two units, the system maintains simplicity while ensuring that touch detection always occurs during periods when the display is static, thereby preserving detection accuracy.
Data Source
AI summary
The present disclosure discloses an information processing method and an electronic device. The method comprises obtaining display parameters of the display unit; determining a refresh rate of the display unit based on the display parameters; setting a first period and a second period in the refresh cycle; and generating a first control instruction to control the electronic device to refresh the touch detection unit while stopping refreshing the display unit during the first period of each refresh cycle, so as to enable the touch detection unit to detect a touch operation, and control the electronic device to refresh the display unit during the second period of each refresh cycle.