LED Package Error Detection for Cascade Display Data Integrity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional LED display systems face challenges in achieving small pixel pitches for higher resolution displays, leading to increased complexity and costs due to the density of electrical devices and shared-driver configurations, which can cause thermal crowding and pulsing effects.
Innovation Solution
Integrate a separate active electrical element with each LED package for active matrix addressing, capable of checking input error detection codes and generating new output error detection codes to identify and intentionally corrupt data, reducing the need for separate drivers and controllers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If passive matrix addressing with shared drivers is used, then device complexity is reduced, but error detection capability deteriorates
Solution Approach 1:
The patent divides the LED display system into independent LED packages, each equipped with its own active electrical element containing error detection logic. This segmentation allows each package to independently detect and report errors, resolving the contradiction by distributing error detection capability across multiple units rather than requiring a complex centralized system.
Solution Approach 2:
Each LED package includes an integrated active electrical element that autonomously performs error detection on received data blocks using CRC codes. The package self-verify data integrity and generate error indicators without external intervention, achieving reliable error detection while maintaining simple device architecture.
2Measurement precision
If pixel density is increased, then display resolution is improved, but device complexity increases
Solution Approach 1:
The display is segmented into modular LED packages that can be arranged in various densities. Each package is a self-contained unit with integrated error detection, allowing high-resolution displays to be built by simply increasing the number of packages rather than complicating the internal structure of each package or the driver system.
Solution Approach 2:
The active electrical element in each LED package serves multiple functions: data reception, CRC error detection, data block modification, and error indicator generation. This multi-functionality reduces the need for separate dedicated components, allowing high-resolution displays to achieve fine pixel pitch without proportionally increasing device complexity.
3Reliability
If active matrix addressing with integrated active electrical element is used, then error detection capability is improved, but device complexity increases
Solution Approach 1:
The patent merges the active electrical element with the LED package structure, integrating the error detection logic directly into each package. This combination eliminates the need for separate error detection hardware, achieving reliable error detection while maintaining simple device architecture through functional integration.
Solution Approach 2:
The active electrical element performs multiple functions including data reception, CRC calculation, data modification, and error indication within a single integrated component. This multi-functionality reduces the overall component count and device complexity while providing comprehensive error detection capability.
Data Source
AI summary
Light-emitting diode (LED) packages and more particularly error detection in LED packages is disclosed. LED packages are arranged for cascade communication as part of a larger LED display. A separate active electrical element is integrated with each LED package for facilitating active matrix addressing from a data stream, checking input error detection codes, and generating new output error detection codes to the data stream. Each electrical element within each LED package is separately capable of changing one or more portions of received data in the data stream, transmitting the changed data to the next downstream LED package, and generating output error detection codes based on the changed data. When the active electrical element identifies corrupted data based on input error detection codes, the generated output error detection codes may be intentionally corrupted so downstream LED packages will also identify the respective data as being corrupted.