Video Wall Synchronization via Master Player Broadcast
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing video wall systems face limitations in size due to signal transmission line lengths and memory constraints, and struggle with synchronization of displays for smooth and stable frame stitching.
Innovation Solution
A display method and system utilizing a server and multiple player devices connected via a local network, where a master player device sends a broadcast command to synchronize the display of video stream regions across multiple displays after a preset delay, ensuring synchronized playback despite potential time differences among player devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If signal transmission lines are used to connect displays through HDMI or DVI interfaces, then high-definition video transmission is achieved, but the video wall size is restricted by the lengths of the signal transmission lines
Solution Approach 1:
The patent introduces a server as an intermediary device that receives video signals and distributes them to multiple player devices, which then output to displays. This mediator architecture replaces direct long-distance signal transmission lines with network-based communication, enabling video wall configurations that exceed the physical length limitations of traditional HDMI or DVI cables.
2Area of stationary object
If multiple graphic cards are used to connect displays, then video wall configuration flexibility is improved, but the video wall size is restricted by memory spaces
Solution Approach 1:
The patent employs a server with centralized memory resources that can be dynamically allocated to multiple player devices through network communication. This universal memory resource pool replaces the need for each graphic card to have dedicated memory space, allowing the video wall size to be determined by the server's total memory capacity rather than the sum of individual graphic card memory spaces.
3Reliability
If displays are connected through HDMI or DVI interfaces, then high-definition video transmission is achieved, but synchronization control among displays becomes complex
Solution Approach 1:
The patent implements a feedback mechanism where the server sends synchronization commands to all player devices, and each player device adjusts its output based on received timing information. This feedback loop enables precise synchronization control across all displays in the video wall, maintaining high-definition quality while reducing the complexity of manual synchronization configuration.
Data Source
AI summary
A display method and a display system for a video wall are proposed. The method is applicable to a display system having a server and multiple player devices. Each of the player devices is connected to the server and a video wall having multiple displays, and each of the player devices corresponds to a different one of the displays and a different one of regions in a video stream. The method includes to receive the video stream from the server by each of the player devices, to send a broadcast command by a master player device among the player devices to other player devices, and to start displaying the corresponding region in a first frame of the video stream on the corresponding display of the video wall by each of the player devices after a preset delay time interval according to the broadcast command.