Bidirectional LED Control Communication Protocol
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Solution Overview
Problem
Existing methods for bidirectional communication between LED control units connected in series are inefficient due to high technical complexity, excessive hardware requirements, and unnecessary data overhead, making them unsuitable for high-speed communication with minimal technical effort.
Innovation Solution
A method where a command unit transmits control commands to LED control units connected in series, which execute and forward the commands iteratively, while returning execution results back to the command unit, allowing for efficient communication with minimal hardware resources and reduced data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional communication protocols (CAN bus, LIN bus) are used for bidirectional communication between command unit and LED control units, then data transmission reliability is improved through error handling mechanisms, but device complexity increases due to numerous components and security mechanisms
Solution Approach 1:
The patent extracts and removes error handling mechanisms from the communication protocol, allowing data to be transmitted without checksums, error detection, or security mechanisms. This simplifies the device by eliminating components and processing required for error handling, while accepting that some data loss may occur in exchange for high-speed communication.
Solution Approach 2:
The bidirectional communication is segmented into separate transmission phases: forward transmission of control commands from command unit to LED control units, and return transmission of execution results from LED control units to command unit. This segmentation allows each phase to use optimized unidirectional protocols without the overhead of full bidirectional error handling.
2Reliability
If generic communication protocols with extensive error handling are implemented, then data integrity is improved, but productivity decreases due to high overhead and numerous data transmissions required
Solution Approach 1:
Error handling overhead including checksums, error detection codes, and retransmission protocols are extracted and removed from the communication system. This reduces the amount of data transmitted and processed, thereby increasing communication speed and productivity.
Solution Approach 2:
The system applies partial error handling only where absolutely necessary, rather than comprehensive error handling on all data transmissions. This selective approach maintains sufficient reliability for critical operations while maximizing overall communication throughput.
3Adaptability or versatility
If control units are connected in series for distributed LED control, then adaptability is improved for broadband applications, but device complexity increases due to communication coordination requirements
Solution Approach 1:
Instead of having each control unit actively manage bidirectional communication coordination, the system inverts the approach by using simple unidirectional transmission in each direction. The command unit initiates forward transmission, and execution results automatically return in reverse direction, eliminating the need for complex coordination logic at each control unit.
Solution Approach 2:
The series-connected control units use a universal communication interface that handles both forward command transmission and reverse result return through the same physical connection, simplifying the hardware design while maintaining adaptability for various LED control applications.
Data Source
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AI summary
The present invention relates to a method for bidirectional communication between a command unit and a plurality of connected LED control units. According to the invention, it is possible to send control commands to the LED control units at very high speed and to send execution results from these control units back to a command unit. Thus, the present invention provides a highly efficient and therefore high-performance method for communication between several control units connected in series. The invention further relates to a corresponding device for bidirectional communication and to a computer program containing control commands for executing the method.