Optical Detector Segmentation for Position Detection Accuracy
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Solution Overview
Problem
User interfaces with optical detectors face challenges in accurately detecting object movement at positions distant from the detector, leading to reduced accuracy and difficulty in detecting operations like dragging or swiping.
Innovation Solution
The implementation of a receiving device with a first detection region closer to the optical detector for accurate movement detection and a second detection region farther away for presence detection, utilizing an optical detector with light-emitting and light-receiving portions to enhance positional accuracy and operation recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the detection position is moved farther from the optical detector to expand the detection area, then the detection coverage is improved, but the measurement precision deteriorates
Solution Approach 1:
The detection regions are segmented into a first detection region closer to the optical detector for movement detection and a second detection region farther away for presence detection. This segmentation allows each region to be optimized for its specific detection purpose, resolving the contradiction between coverage and precision.
2Device complexity
If a single detection region is used for both movement and presence detection, then the device complexity is reduced, but the reliability of operation detection deteriorates
Solution Approach 1:
Different detection regions are assigned different detection qualities and purposes: the first detection region is optimized for movement detection while the second detection region is optimized for presence detection. This local quality differentiation ensures reliable operation detection across different spatial zones without requiring a single complex detection system.
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 configuration improves the accuracy of movement detection in the first region while allowing for effective presence detection in the second region, reducing errors in user input recognition even at distances from the detector.
Implementation Method 1
reflected light that occurs when light emitted from one or more of light-emitting portions is reflected by the object of interest to be detected
Data Source
AI summary
A receiving device includes an optical detector, a first detection region, and a second detection region. The optical detector detects a position of an object of interest to be detected by receiving, with use of one or more of light-receiving portions, reflected light that occurs when light emitted from one or more of light-emitting portions is reflected by the object of interest to be detected. The first detection region is provided at a position closer to the optical detector, and is for detecting movement of the object of interest to be detected with the use of the optical detector. The second detection region is provided at a position farther from the optical detector than the first detection region, and is for detecting presence of the object of interest to be detected with the use of the optical detector.