Transformerless LED Display Data Transmission Architecture

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Solution Overview

Problem

Large LED display panels face challenges in synchronously transmitting data to LED drivers due to the need for extensive gigabit Ethernet ports and transformers, which increase production costs, occupy space, and cause frame latency.

Innovation Solution

The implementation of a transformerless electrical wire link and a DDR SRAM-based transmitter with a pixel mapping table, allowing data packets to be transmitted without transformers and reducing the number of gigabit Ethernet ports, enabling efficient data distribution and minimizing panel size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If gigabit Ethernet ports and transformers are used for data transmission, then reliable data transmission is achieved, but production costs increase and panel size increases

Engineering Contradiction:
Improvedata transmission reliabilityVSAvoidproduction cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent extracts and eliminates the transformer component from the data transmission system. By using a transformerless electrical wire link, the system removes the harmful component (transformer) that increased production costs and panel size, while maintaining reliable data transmission through direct electrical connection between LED drivers and control circuits

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical/electromagnetic transformation system (transformer-based isolation) with a direct electrical conduction system. Instead of using transformers to isolate and transmit signals, the system uses direct wire links that conduct electrical signals directly from control circuits to LED drivers, eliminating the need for electromagnetic transformation components

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If gigabit Ethernet ports and transformers are used for data transmission, then reliable data transmission is achieved, but panel size increases

Engineering Contradiction:
Improvedata transmission reliabilityVSAvoidpanel size
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The patent extracts and eliminates the transformer component from the data transmission system. By using a transformerless electrical wire link, the system removes the harmful component (transformer) that increased production costs and panel size, while maintaining reliable data transmission through direct electrical connection between LED drivers and control circuits

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If transformers and gigabit Ethernet ports are used, then data transmission is reliable, but frame latency occurs

Engineering Contradiction:
Improvedata transmission reliabilityVSAvoidframe latency
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces the mechanical/electromagnetic transformation system (transformer-based isolation) with a direct electrical conduction system. Instead of using transformers to isolate and transmit signals, the system uses direct wire links that conduct electrical signals directly from control circuits to LED drivers, eliminating the need for electromagnetic transformation components

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Reliability

If extensive gigabit Ethernet ports are used, then data distribution is reliable, but device complexity increases

Engineering Contradiction:
Improvedata distribution reliabilityVSAvoidnumber of gigabit Ethernet ports
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts and eliminates the transformer component from the data transmission system. By using a transformerless electrical wire link, the system removes the harmful component (transformer) that increased production costs and panel size, while maintaining reliable data transmission through direct electrical connection between LED drivers and control circuits

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS9747872B2LED display device and method for operating the same
Publication Date: 2017.08.29 SCT
  • US9747872B2 patent drawing
  • US9747872B2 patent drawing
  • US9747872B2 patent drawing

AI summary

This disclosure describes an LED display device. The LED display device includes a transmitter having a memory and a pixel mapping table, a plurality of first receivers coupled to the transmitter, a plurality of second receiver modules, and a plurality of LED driver groups. A unique address is assigned to a data packet with a use of the pixel mapping table. The data packet has a set of field information and the set of field information includes the unique address. Each of the second receiver modules is coupled to at least one of the first receivers and includes a plurality of second receivers. None of the plurality of second receivers comprises a pixel mapping memory. Each of the LED driver groups is coupled to one of the plurality of second receivers and includes a plurality of LED drivers.