Textual Signage Projector with DMX-Controlled LED Matrix
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Solution Overview
Problem
Current display projectors lack the capability to efficiently project textual patterns with dynamic control and synchronization with sound, limiting their application in signage and entertainment fields.
Innovation Solution
A projector system utilizing a light emitting matrix controlled by a digital multiplex (DMX) protocol and a controller that can operate in various modes, including sound-activated and master/slave configurations, to project textual patterns on a surface, with options for LED or LCD display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional image projector is used to project textual patterns, then the projector can display images or video, but it lacks the capability for dynamic control and synchronization with sound signals
Solution Approach 1:
The light source is divided into a matrix of individually controllable light emitting elements (LEDs or LCD pixels) arranged in rows and columns. This segmentation allows selective illumination of specific elements to form textual patterns and enables independent control of each element through row-column scanning, achieving dynamic textual display capability while managing control complexity through structured organization
Solution Approach 2:
The system implements dynamic control by enabling sequential scanning of the light emitting matrix elements over time. The controller activates rows and columns in programmed sequences, allowing textual patterns to be dynamically formed, updated, and synchronized with sound signals. This temporal dynamics enables versatile textual display without requiring all elements to be controlled simultaneously
2Adaptability or versatility
If a light emitting matrix with individual control of each element is implemented, then dynamic textual patterns can be projected, but the control system becomes more complex
Solution Approach 1:
The controller stores predefined textual patterns and scanning sequences in memory before operation. By preparing control data in advance and organizing it into structured formats (row-column addresses, timing sequences), the system reduces real-time control complexity while maintaining dynamic display capability. The preliminary organization of control data allows straightforward execution during operation
Solution Approach 2:
The system uses periodic scanning of the light emitting matrix through sequential activation of rows and columns at regular time intervals. This periodic action simplifies control by transforming complex simultaneous multi-element control into a rhythmic, repeating sequence that can be generated by simple timing circuits and stored in memory, reducing controller complexity while enabling dynamic display
3Adaptability or versatility
If multiple projectors are used to enhance display capability, then more textual patterns can be projected, but the system becomes more complex to control
Solution Approach 1:
The controller is designed with universal functionality to manage one or multiple projectors through a unified control architecture. The same controller can operate individual projectors independently or coordinate multiple projectors in synchronized arrangements (such as spelling out words across multiple surfaces), allowing the system to adapt to different display configurations without requiring separate control systems for each projector
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
Enables flexible and dynamic projection of textual patterns that can be synchronized with sound, enhancing applications in signage and entertainment by providing customizable and interactive visual displays.
Implementation Method 1
the light emitting matrix comprises a plurality of light emitting diodes (LEDs)
Data Source
AI summary
A projector for displaying textual patterns includes a light emitting matrix and a controller for controlling the light emitting matrix. The light emitting matrix is selectively illuminated to project textual patterns on a surface.