Adjustable Optical Touch Control Apparatus for Power Optimization
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Solution Overview
Problem
Optical touch control apparatuses have a fixed image capturing range, leading to inefficient power consumption due to unnecessary illumination of a larger area, even when a narrower range is sufficient for specific actions like scrolling.
Innovation Solution
An adjustable optical touch control apparatus and light guide apparatus that can change the image capturing and light guiding areas based on user requirements, using a control unit to adjust the image sensor's capturing area and a light source control unit to adjust the illumination, allowing for a larger or smaller area depending on the mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the image sensor captures a large image capturing range to cover most or all of the detecting surface, then the detecting coverage is improved, but the power consumption increases due to illuminating and capturing a larger area than necessary
Solution Approach 1:
The patent applies the dynamics principle by making the image capturing range adjustable rather than fixed. The control unit dynamically changes the image capturing range between a first range (covering most or all of the detecting surface) and a second range (narrower range), allowing the system to adapt to different operational needs and reduce power consumption when full coverage is not required.
Solution Approach 2:
The patent applies the parameter changes principle by modifying the image capturing range parameter based on operational requirements. The control unit changes the capturing range parameter between different modes, allowing the system to optimize between coverage area and power consumption by selecting appropriate parameter values for different usage scenarios.
2Area of stationary object
If the light source illuminates a larger area to ensure sufficient lighting coverage, then the illumination coverage is improved, but the power consumption increases due to illuminating unnecessary areas
Solution Approach 1:
The patent applies the dynamics principle by making the illumination area adjustable rather than fixed. The control unit dynamically changes the illumination area between a first area (covering most or all of the detecting surface) and a second area (narrower area), allowing the system to adapt to different operational needs and reduce power consumption when full coverage is not required.
Solution Approach 2:
The patent applies the parameter changes principle by modifying the illumination area parameter based on operational requirements. The control unit changes the illumination area parameter between different modes, allowing the system to optimize between coverage area and power consumption by selecting appropriate parameter values for different usage scenarios.
3Reliability
If the image sensor is designed to capture the entire detecting surface, then the detecting completeness is improved, but the device complexity increases due to requiring larger sensors and more powerful light sources
Solution Approach 1:
The patent applies the dynamics principle by making the image capturing range adjustable rather than fixed. The control unit dynamically changes the image capturing range between a first range (covering most or all of the detecting surface) and a second range (narrower range), allowing the system to adapt to different operational needs and reduce power consumption when full coverage is not required.
Solution Approach 2:
The patent applies the parameter changes principle by modifying the image capturing range parameter based on operational requirements. The control unit changes the capturing range parameter between different modes, allowing the system to optimize between coverage area and power consumption by selecting appropriate parameter values for different usage scenarios.
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
Optimizes power efficiency by adjusting the image capturing range according to user needs, reducing unnecessary power consumption by illuminating only the required area.
Implementation Method 1
the light source 2-5 emits light into the light guide plate 207, and then the light guide plate 207 guides the light to the finger 201 on the detecting surface 203
Implementation Method 2
The image sensor 211 captures the frames via the lens 209
Data Source
AI summary
An optical touch control apparatus, for detecting displacement between an object and the optical touch control apparatus. The optical touch control apparatus comprises: an object detecting apparatus, for detecting the object to generate an object image, having a first detecting area in a first mode and having a second detecting area in a second mode, wherein the first detecting area is larger than the second detecting area; an image sensor, for capturing at least one frame of the object image; and a control unit, for adjusting an image capturing area of the image sensor, according which one of the first detecting area and the second detecting area the object detecting apparatus utilizes.