Multi-Controller Display Synchronization to Eliminate Split Screens
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Solution Overview
Problem
Single field programmable gate arrays (FPGAs) are inadequate for complex systems, leading to high costs and inefficiencies, and using multiple FPGAs results in asynchronous control of display regions, causing splitting-screen phenomena due to varying signal reception times.
Innovation Solution
Implement a display device with multiple controllers, including a master and slave controller, that synchronize control signals through methods such as LVDS, pin-to-pin transmission, and 'handshake' operations to ensure simultaneous display control across regions, compensating for threshold voltage and mobility differences in transistors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple FPGAs are used to control different display regions, then the system capacity and performance requirements are met, but the display regions become asynchronous due to varying signal reception times, causing splitting-screen phenomena
Solution Approach 1:
The patent introduces a master controller as an intermediary between the drive circuit and multiple slave controllers. The master controller receives control signals, processes them into control commands, and distributes them to slave controllers with precise timing control. This intermediary structure enables centralized synchronization management, ensuring that all display regions operate in sync while maintaining the system's capacity to handle complex ultra-large size OLED products.
2Adaptability or versatility
If multiple FPGAs are used to control different display regions, then complex system requirements are satisfied, but the device complexity increases due to multiple controllers
Solution Approach 1:
The patent divides the control system into hierarchical segments: one master controller and multiple slave controllers. The master controller handles high-level control signal reception and command generation, while slave controllers execute specific display region control. This segmentation allows the system to manage complex ultra-large size OLED products with multiple display regions while maintaining manageable device complexity through clear functional division.
3Productivity
If control signals are transmitted to multiple controllers simultaneously, then processing efficiency is improved, but signal transmission time differences cause asynchronous display control
Solution Approach 1:
The master controller performs preliminary processing of control signals before distribution to slave controllers. It converts incoming control signals into standardized control commands and pre-calculates timing parameters. This preliminary action ensures that when commands are distributed to multiple slave controllers, they are executed with precise synchronization, eliminating display time differences while maintaining efficient parallel processing of multiple display regions.
Data Source
AI summary
A display device includes: a display screen, a drive circuit, a first controller and a second controller. The display screen includes a first display region and a second display region. The drive circuit is configured to transmit a control signal to at least one of the first controller or the second controller. The first controller is configured to, responding to the control signal, perform a display control on the first display region. The second controller is configured to, responding to the control signal, perform a display control on the second display region. A display time difference between the first display region and the second display region is less than a threshold time period.