Light Beam Pointer Control for Presentation Devices
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Solution Overview
Problem
Existing display control systems for presentation devices do not allow for intuitive and user-friendly operations beyond simple pointing, as they lack the ability to interpret and respond to additional functions from pointing devices, such as controlling display screens or presentation materials.
Innovation Solution
A display control device that acquires an image of a light beam from a pointer device, identifies its features and state, and controls a display device to perform specific operations based on these characteristics, enabling functions like page navigation, enlargement, and volume control without the need for a separate mouse or keyboard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pointer device is used only for pointing at the display surface, then the system is simple and reliable, but user-friendliness and operational capability are limited
Solution Approach 1:
The pointer device is enhanced to perform multiple functions beyond simple pointing. By detecting different states of the light beam (position, color, intensity, duration), the system enables operations such as selecting, confirming, navigating, and controlling display content, transforming a single-function device into a multi-functional control interface
Solution Approach 2:
The system interprets different parameters of the light beam (color, intensity, duration, position) to distinguish between various user intentions. For example, different colors may represent different operations, or the duration of light emission may indicate different command types, allowing rich operational capability from a simple device
2Reliability
If multiple pointing devices are registered and authenticated, then unauthorized operation is prevented, but operational flexibility and ease of use are reduced
Solution Approach 1:
The system automatically detects and identifies pointer devices based on their inherent characteristics (such as light beam properties) without requiring manual registration or authentication processes. This self-identifying mechanism maintains security while eliminating the complexity of device registration and authentication procedures
3Ease of operation
If a pointer device can perform operations beyond pointing, then user-friendliness improves, but the difficulty of detecting and measuring device state increases
Solution Approach 1:
The system continuously monitors the light beam properties and provides real-time feedback by interpreting changes in the beam's characteristics. By establishing clear relationships between light beam states and corresponding operations, the system makes detection and measurement straightforward while enabling rich operational capability
Data Source
AI summary
Display operation of a display device is controlled in association with a pointer device. A display control system that includes: a display device for displaying information on a display surface; a control device for controlling the display of the display device; and an image acquisition device for acquiring an image of the display device including a light beam from a pointer device capable of emitting a light beam is proposed. The control device includes: an acquisition unit for acquiring the image from the image acquisition device; a feature identification unit for identifying a feature of the light beam included in the image; and a display control unit for performing display operation of the display device based on the feature and state of the light beam. A corresponding display control method and display control program are proposed, too.