Touch Region Calibration via Camera Infrared Filter Switch
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Solution Overview
Problem
Existing touch-region calibration methods require human involvement, affecting user experience and efficiency in converting non-touch display regions into touch-control screens.
Innovation Solution
An electronic device with a camera assembly and infrared filter switch that automatically calibrates the touch region by turning off the infrared filtering function, detecting calibrated objects, and determining the touch region range, allowing for automatic calibration without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual calibration method is used, then calibration accuracy can be achieved, but user operation complexity increases and calibration time is extended
Solution Approach 1:
The system performs automatic calibration without requiring manual operation. The controller automatically controls the infrared filter switch to turn off infrared filtering, detects calibrated objects through the camera assembly, and determines touch region range automatically, eliminating the need for manual infrared calibration points
Solution Approach 2:
The patent replaces manual mechanical calibration operations with an automated optical detection system. The camera assembly captures images of calibrated objects, and the controller processes these images to automatically determine touch region coordinates, substituting manual mechanical adjustment with automated optical-mechanical-electrical integration
2Productivity
If manual calibration method is used, then calibration can be performed, but calibration efficiency decreases and user experience deteriorates
Solution Approach 1:
The system displays calibrated objects on the display region before calibration detection. These pre-positioned calibrated objects serve as reference markers that the camera assembly can automatically detect, enabling rapid calibration without manual intervention during the actual calibration process
Solution Approach 2:
The calibration process is fully automated through the controller which orchestrates the infrared filter switching, image capture by camera assembly, and automatic calculation of touch region coordinates. This self-service calibration eliminates manual operations and significantly reduces calibration time
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
Simplifies the calibration process, improving user experience by eliminating the need for manual infrared calibration points and enabling efficient conversion of display regions into touch-control screens.
Implementation Method 1
an infrared filter and a switch, where the switch controls a mode of the infrared filter
Data Source
AI summary
The present disclosure provides a method for touch-region calibration. The method includes controlling a switch of a camera assembly in an electronic device to turn off an infrared filtering function of an infrared filter of the camera assembly, according to a calibration instruction; detecting a plurality of calibrated objects using the camera assembly; and determining a range of a touch region on the electronic device according to the plurality of calibrated objects.