Multi-Panel Display Timing Control for Vertical Alignment
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Solution Overview
Problem
In multi-display image systems, especially those with three or more vertically arranged panels, a significant delay occurs in the completion of image drawing, leading to visual delays during screen switching due to the need for multiple-frame delays between panels, which is not effectively addressed by existing techniques.
Innovation Solution
An image display system where each display panel delays the start of output by a predetermined time based on its position in the vertical arrangement, calculated to minimize frame shifts and ensure synchronized image display across panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the start time of vertical scanning is delayed by one frame for lower display panels, then display shift at panel boundaries is eliminated, but significant delay occurs in image display completion for systems with three or more vertically arranged panels
Solution Approach 1:
The patent applies dynamic scanning control where the vertical scanning start time is adjusted based on the panel's position in the vertical arrangement. Instead of a fixed one-frame delay, each panel's scanning timing is dynamically optimized to maintain display alignment while reducing overall completion time. The control unit calculates and applies position-specific timing adjustments that balance alignment precision with display speed.
Solution Approach 2:
The patent changes the timing parameter of vertical scanning based on the panel's vertical position. By modifying the scanning start time parameter differently for each panel position, the system achieves both display alignment and reduced delay. The control unit implements parameter adjustments that are tailored to each panel's location in the vertical arrangement.
2Stability of the object's composition
If multiple-frame delays are applied between vertically arranged panels to synchronize image display, then display alignment is improved, but screen switching speed deteriorates due to cumulative delay
Solution Approach 1:
The patent applies local quality control where each display panel receives a customized scanning timing adjustment based on its specific position in the vertical arrangement. Instead of applying a uniform delay to all panels, the control unit implements position-specific timing parameters that optimize both synchronization stability and switching speed for each local panel position.
Solution Approach 2:
The system dynamically adjusts scanning timing parameters based on panel position to maintain synchronization while enabling faster screen switching. The control unit implements dynamic timing control that responds to the vertical arrangement configuration, allowing the system to achieve both stability and speed performance.
3Device complexity
If vertical scanning is synchronously performed across all display panels, then scanning coordination is simplified, but display shift occurs at boundaries between upper and lower adjacent panels
Solution Approach 1:
The patent changes the scanning timing parameter based on panel position to eliminate display shift. The control unit implements parameter adjustments that are tailored to each panel's vertical location, modifying the scanning start time to compensate for position-related alignment issues while maintaining relatively simple control logic.
Data Source
AI summary
An image display device having a display panel, the device being utilized to form an image display system in which a plurality of the image display devices are arrayed in one or both of vertical and horizontal directions to display one image as a whole while an image allocated to each device is displayed via the corresponding display panel, the image display device includes a reading processing unit that reads out image information and delays start of output of this image information by a predetermined period of time determined based on the number of the image display devices which forms the image display system and a row to which the present device belongs in the vertical arrangement.