Projection Lighting Control With Parameter-Based Region Commands
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Solution Overview
Problem
Existing lighting systems with multiple LEDs require large amounts of communication data for control commands, limiting flexibility in expressing complex graphics or characters, and cannot efficiently reduce data while maintaining high flexibility in lighting region changes.
Innovation Solution
A lighting device with a two-dimensional array of micro LEDs, a communicator, driving circuit, and projection lens, using pair information in control commands to specify parameters like shape, position, size, color, or brightness of lighting regions, reducing data requirements and enhancing flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If control commands are transmitted in the form of an image with bitmap encoding for each LED, then the lighting pattern can be precisely controlled, but the amount of communication data becomes very large
Solution Approach 1:
The patent segments the control command into multiple hierarchical levels: (1) region-level parameters defining lighting areas, (2) pattern-level parameters defining illumination patterns within regions, and (3) LED-level control derived from these higher-level definitions. This segmentation allows precise control of individual LEDs while transmitting only aggregated parameter data, dramatically reducing communication data volume while maintaining lighting pattern precision.
2Quantity of substance
If values related to position and size of LEDs are encoded in a predetermined order, then the amount of communication data is reduced, but the system cannot cope with future needs for complicated graphics, letters, or characters
Solution Approach 1:
The patent implements dynamic control parameters that allow the lighting system to adapt to different display requirements. The control command structure includes adjustable parameters for region shapes, positions, and patterns that can be modified without changing the fundamental communication protocol. This enables the system to handle various complexities from simple indicators to complicated graphics and characters while maintaining efficient data transmission.
Solution Approach 2:
The system uses parameter-based control where lighting regions and patterns are defined by adjustable parameters rather than fixed encodings. By changing parameters such as region coordinates, shape descriptors, and pattern characteristics, the system can express different lighting configurations including complicated graphics and characters without requiring fundamentally different communication methods, thus maintaining both data efficiency and versatility.
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 allows for reduced communication data and high flexibility in changing lighting regions, enabling efficient control of lighting patterns and shapes, including complex graphics or characters.
Implementation Method 1
a projection lens that projects light emitted from the light source driven by the driving circuit as illumination light
Data Source
AI summary
A lighting device includes: a light source that includes a plurality of light emitting elements arranged in a two-dimensional array; a communicator that acquires a control command by communicating with a control device; a driving circuit that drives the light source based on the control command acquired by the communicator; and a projection lens that projects light emitted from the light source driven by the driving circuit as illumination light. The control command includes pair information that includes: a tag that indicates a parameter of the illumination light; and a specific value of the parameter indicated by the tag. The parameter is any one of a shape, a position, a size, a color, or a brightness of a lighting region to be illuminated by the illumination light, or a time-varying factor related to at least one of these.