Flexible LED Pixel String Calibration Memory Connector
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Solution Overview
Problem
Flexible LED pixel strings face challenges in maintaining identical color emission across different strings, especially in the touring industry where strings from different LED bins are used, leading to inconsistent color presentation.
Innovation Solution
Incorporating a memory connector with calibration data for each LED pixel string, allowing the data and power feeder to adjust for color differences and ensure identical color output, reducing the need for all strings to be manufactured with the same LED bins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible LED pixel strings are manufactured using different LED bins to meet diverse installation needs, then adaptability and versatility are improved, but color consistency and uniformity across different strings deteriorate
Solution Approach 1:
The patent measures and stores calibration data for each LED pixel string during manufacturing, before deployment. This preliminary characterization of LED bin variations allows the system to compensate for color differences later through digital calibration, enabling use of different LED bins while maintaining color consistency
Solution Approach 2:
The patent changes the control parameters by introducing calibration data that adjusts the drive current or PWM duty cycle for each LED pixel based on its specific LED bin characteristics. This parameter adjustment compensates for manufacturing variations and achieves uniform color output across strings made from different LED bins
2Manufacturing precision
If all LED pixel strings are manufactured with identical LED bins to ensure color consistency, then color uniformity is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The system performs preliminary measurement and storage of calibration data during manufacturing, creating a digital fingerprint for each LED pixel string. This allows later compensation without requiring strict control of LED bin selection during production, simplifying manufacturing processes
Solution Approach 2:
The patent creates a digital copy or model of each LED pixel string's characteristics through calibration data storage. This digital representation allows the system to simulate and compensate for hardware variations, achieving uniformity without requiring identical physical components across all strings
3Manufacturing precision
If calibration data is stored in memory for each LED pixel string, then color consistency across different bins is improved, but device complexity and memory requirements increase
Solution Approach 1:
The patent extracts the calibration data from the main control system and stores it in dedicated memory associated with each LED pixel string. This separation allows the calibration information to be easily accessed and applied without complicating the main control logic, managing complexity through functional decomposition
Data Source
AI summary
The present invention relates to a flexible LED pixel string comprising a number of LED pixels interconnected by a flexible cable, where the flexible LED pixel string comprises a connector for connecting the flexible LED pixel string to a data and power feeder. The flexible cable comprises a first conductor being a power line, a second conductor being a data line, a third conductor being a clock line, a fourth conductor being a first ground line and a third conductor being a second ground line. The data line or the clock line are arranged between the first ground line and the second ground line.