Operation Device Light Emission Mode Switching
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Solution Overview
Problem
Existing operation devices used for interacting with an operation surface face challenges in maintaining detection accuracy while minimizing power consumption, as they require significant power to communicate effectively.
Innovation Solution
The operation device employs a light emitting unit that operates in two modes: a first mode for accurate detection when in contact with the surface and a second mode with reduced light emission when not in contact, cyclically adjusting light emission periods to conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the light emitting unit emits light continuously in the first light emitting mode to maintain operation detection accuracy, then the detection accuracy is improved, but the power consumption increases
Solution Approach 1:
The patent applies dynamics by making the light emitting mode adjustable based on contact state. The control unit dynamically switches between the first light emitting mode (higher light emission) when in contact with the operation surface and the second light emitting mode (lower light emission) when not in contact, allowing the system to adapt its power consumption and detection accuracy to the current operational context
Solution Approach 2:
The patent changes the light emission parameters (intensity, duration, frequency) based on the contact state detection. When contact is detected, the system uses the first light emitting mode with parameters optimized for accurate detection; when no contact is detected, it switches to the second light emitting mode with reduced parameters to conserve power
2Use of energy by moving object
If the light emitting unit emits light in the second light emitting mode with smaller amount of light to reduce power consumption, then the power consumption is reduced, but the operation detection accuracy may drop
Solution Approach 1:
The system dynamically adjusts the light emitting mode based on contact state, ensuring that the second light emitting mode (with reduced power consumption) is only used when not in contact with the operation surface, where full detection accuracy is less critical
Solution Approach 2:
The control unit changes light emission parameters based on contact state: using the first light emitting mode with higher intensity and/or longer duration when contact is detected to ensure accurate detection, and switching to the second light emitting mode with reduced parameters when no contact is detected to conserve power
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 approach maintains detection accuracy while significantly reducing power consumption by adjusting light emission based on contact status, thereby extending the device's service life.
Implementation Method 1
a light emitting unit; and a control unit which causes the light emitting unit to emit light and thus transmits signal light
Data Source
AI summary
A pointing element used for an operation on a screen includes: a tip light emitting unit; and a control unit which causes the tip light emitting unit to emit light and thus transmits signal light. The control unit causes the tip light emitting unit to emit light in a first light emitting mode in a state of being in contact with the screen. The control unit causes the tip light emitting unit to emit light in a second light emitting mode having a smaller amount of light than the first light emitting mode, in a state of being not in contact with the screen.