Sensor Driving Unit Coordinate Validation Across Sensing Frames
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Solution Overview
Problem
Existing electronic devices face challenges in improving sensing reliability, particularly in accurately determining coordinate information from sensor layers due to inconsistencies in coordinate data processing.
Innovation Solution
The electronic device incorporates a sensor layer with a plurality of sensing electrodes and a sensor driving unit that processes coordinate information through multiple sensing frames, comparing and storing coordinate values to ensure accuracy before transmitting a start signal, and applying additional driving signals when discrepancies are detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coordinate information is processed through multiple sensing frames with comparison and validation, then sensing reliability is improved, but processing time and system complexity increase
Solution Approach 1:
The patent performs preliminary coordinate information validation by comparing first coordinate information with second coordinate information obtained from adjacent sensing frames before final processing. This preliminary check filters out abnormal data early in the process, ensuring reliability while managing processing time through selective validation rather than complete re-processing.
Solution Approach 2:
The system implements feedback mechanisms where coordinate information from one sensing frame is used to validate and refine coordinate data from subsequent frames. The processor continuously monitors and compares coordinate values, using feedback from previous measurements to improve the accuracy and reliability of current sensing data.
2Measurement precision
If coordinate information from multiple sensing frames is compared and validated, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the coordinate processing task into distinct stages: obtaining first coordinate information from an initial sensing frame, obtaining second coordinate information from adjacent sensing frames, comparing these coordinate sets, and selectively determining final coordinate information based on comparison results. This segmentation simplifies the overall complexity by breaking down the validation process into manageable, modular steps.
Solution Approach 2:
The system applies partial validation by comparing coordinate information only when necessary - specifically when first coordinate information is obtained and needs verification against second coordinate information from adjacent frames. This selective approach improves measurement precision through targeted validation rather than continuous full-scale processing, thereby managing device complexity.
3Reliability
If additional driving signals are applied to sensing electrodes, then sensing reliability is improved, but energy consumption increases
Solution Approach 1:
The patent employs periodic sensing frames where driving signals are applied to sensing electrodes in a structured sequence. First coordinate information is obtained in one sensing frame, and second coordinate information is obtained in adjacent sensing frames. This periodic application of driving signals ensures reliable coordinate determination through multiple measurements while managing energy consumption by spacing signal applications across different frames rather than continuous signaling.
Data Source
AI summary
Disclosed is an electronic device which include a sensor layer that includes a plurality of sensing electrodes, and a sensor driving unit that drives the sensor layer in units of sensing frame. The sensing frame includes a first sensing frame including a first scan section and a first processing section and a second sensing frame including a second scan section and a second processing section. The sensor driving unit generates first coordinate information during the first scan section, stores the first coordinate information during the first processing section, generates second coordinate information during the second scan section, and stores the second coordinate information during the second processing section and determines whether the first coordinate information and the second coordinate information coincide with each other.