Series Display Command Header Modification
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Solution Overview
Problem
Conventional methods for controlling multiple display devices connected in series require time-consuming and error-prone presetting of identification codes, making it difficult to send commands efficiently and maintain or modify the systems.
Innovation Solution
A method where a command with a header and predetermined identification code is sent to the first display device, which determines if the header matches the preset code; if not, it modifies the header and sends the modified command to the next device, allowing commands to be sent without pre-setting individual identification codes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If identification codes are preset for each display device, then command accuracy is improved, but operation time and complexity increase
Solution Approach 1:
The display devices automatically determine their own identification codes through the header modification mechanism without requiring manual presetting. Each device uses its position in the series connection to automatically generate the correct header value, eliminating the need for user intervention in code assignment while maintaining accurate command delivery.
Solution Approach 2:
The system changes the parameter approach from static preset identification codes to dynamic header modification based on device position. The header value is automatically adjusted according to which device in the series connection should execute the command, allowing accurate targeting without manual configuration.
2Measurement precision
If identification codes are preset for each display device, then command accuracy is improved, but device complexity increases
Solution Approach 1:
The invention extracts the identification code configuration function from the device hardware/software and relocates it to the command protocol itself. The header modification mechanism embedded in the command structure carries the identification information, eliminating the need for separate preset code storage and configuration management.
Solution Approach 2:
The header field serves multiple functions: it acts as both a command identifier and an automatic device selector. By modifying the header based on the target device's position in the series connection, a single header mechanism replaces the need for multiple preset identification code systems.
3Measurement precision
If identification codes are preset for each display device, then command accuracy is improved, but ease of maintenance deteriorates
Solution Approach 1:
The system transitions from static preset identification codes to a dynamic header modification mechanism that automatically adapts to device positions. This dynamic approach allows flexible reconfiguration of device roles without changing any hardware or software identification settings, simplifying maintenance and system reconfiguration.
Solution Approach 2:
The header modification logic is pre-configured in the command transmission mechanism, automatically determining which device should execute which command based on the series connection order. This preliminary setup eliminates the need for ongoing manual identification code management during operation and maintenance.
Data Source
AI summary
A method for sending commands to display devices connected in series includes sending a command to the first display device of N display devices connected in series. The command has a header and each of the N display devices has a same preset identification code. The first display device of N display devices receives the command and determines whether the header is corresponding to the preset identification code. When the header of the command is corresponding to the preset identification code, the first display device executes the command. When header of the command is different from the preset identification code, the first display device generates a modified command by adding an adjustment to the header of the command and sends the modified command to the next display device.