Circular Light Guide Input Device with Touch Feedback
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Solution Overview
Problem
Existing input devices for image display apparatuses lack interactivity and user convenience in terms of touch input, failing to effectively utilize touch position, number, strength, distance, and duration information for enhanced user experience.
Innovation Solution
An input device comprising first and second light source units, a circular light guide, and a touch sensor, where the light source controller adjusts the light output based on touch input information, changing the amount or color of light emitted to provide interactive feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional input devices are used without light feedback mechanisms, then the device structure remains simple, but user convenience and interactivity are poor
Solution Approach 1:
The patent implements a feedback mechanism where light source units emit light in response to touch sensor detection. The light guide transmits and synthesizes light from multiple sources to provide visual feedback to users during touch input operations, enhancing user convenience through interactive light responses while managing device complexity through integrated design
Solution Approach 2:
The input device combines multiple functions into a single integrated structure: touch sensing, light emission, light transmission, and light synthesis. The light guide serves multiple purposes including structural support, light transmission, and color synthesis, reducing overall device complexity while improving ease of operation
2Adaptability or versatility
If light source units are arranged spaced apart to enable individual control, then interactivity during input is improved, but the device structure becomes more complex
Solution Approach 1:
The patent divides the light emission function into multiple spaced-apart light source units that can be independently controlled. Each light source unit corresponds to different touch input positions, enabling segmented control and enhanced interactivity. The light guide connects these segmented sources while maintaining their individual controllability
Solution Approach 2:
The patent merges multiple light source units and the light guide into an integrated assembly where the light guide both transmits light from individual sources and synthesizes their combined output. This merging approach manages structural complexity by creating a unified light transmission and synthesis system
3Measurement precision
If touch sensor detection is implemented to detect touch position and strength, then input precision is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent introduces a light guide as an intermediary element that translates complex touch sensor data into simple visual light responses. The light guide mediates between the touch sensor's detection of position and strength and the user's visual perception, converting multiple measurement parameters into intuitive light intensity and color variations
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
The solution enhances user convenience by providing interactive feedback through light output adjustments, allowing for intuitive control of image display apparatus operations, such as volume and channel control, and improving user interface experience.
Implementation Method 1
a light guide having a circular shape and configured to receive the first light and the second light, synthesize the first light and the second light and output third synthesized light
Data Source
AI summary
An input device and an image display apparatus including the same are disclosed. The input device includes first and second light source units arranged spaced apart from each other and configured to respectively output first light having a first color and second light having a second color, a light guide having a circular shape and configured to receive the first light and the second light, synthesize the first light and the second light and output third synthesized light, a touch sensor configured to detect touch input, and a light source controller configured to control the third light output from the light guide based on touch input detected by the touch sensor. Accordingly, it is possible to improve user convenience.