Touch Baseline Reset Compensation for Display Mode Switching
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Solution Overview
Problem
Electronic devices face touch recognition errors when switching from a low-power display mode to a normal display mode due to distorted analog front end values and misrecognized touch inputs, leading to drag recognition issues and baseline reset malfunctions.
Innovation Solution
The device detects touch inputs in low-power mode, stores corresponding touch data, changes to a normal display mode, resets the touch baseline, and compensates for touch strength using stored data to maintain accurate touch recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the touch baseline is reset when switching from low-power mode to normal mode, then display noise interference is eliminated and AFE value distortion is prevented, but touch recognition accuracy deteriorates due to loss of previously detected touch data
Solution Approach 1:
The system performs preliminary action by storing touch data before baseline reset occurs. The processor saves touch coordinates and touch strength values to memory before the baseline reset is executed during mode switching, ensuring touch information is preserved for later reconstruction after the reset completes.
Solution Approach 2:
Memory serves as an intermediary between the touch sensing module and the processor. Touch data is transferred to memory as a buffer, allowing the system to maintain touch information temporarily during the baseline reset transition period, preventing data loss while the reset process occurs.
2Stability of the object's composition
If the touch baseline is not reset during mode switching, then touch recognition continuity is maintained, but AFE value distortion occurs and drag recognition errors arise due to display noise influence
Solution Approach 1:
The system performs preliminary action by storing touch data before baseline reset occurs. The processor saves touch coordinates and touch strength values to memory before the baseline reset is executed during mode switching, ensuring touch information is preserved for later reconstruction after the reset completes.
Solution Approach 2:
The system uses feedback by compensating touch strength values based on the relationship between low-power mode and normal mode characteristics. The processor adjusts stored touch data using compensation values derived from mode-specific calibration, ensuring accurate touch recognition after baseline reset by feeding back corrected values to the touch processing pipeline.
Data Source
AI summary
Disclosed in various embodiments of the present invention are a method and a device, the device comprising a touch sensing module, a memory and a processor, wherein the processor is configured to detect a touch input while a low-power display mode is driven, store, in the memory, touch data corresponding to the detected touch input, change the low-power display mode to another designated mode, reset a touch baseline of the touch sensing module in response to the mode change, and compensate for the touch strength of the stored touch data at least on the basis of the designated mode. Various embodiments are possible.