Video Multiplexing Synchronization for Daisy-Chain Displays
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Solution Overview
Problem
Information handling systems face challenges in efficiently distributing and synchronizing video content across multiple displays, particularly when the distance between the content source and displays exceeds recommended specifications, leading to potential loss of video quality and frame rate consistency.
Innovation Solution
The system provides configuration information associated with a video stream to each display, using synchronization frames with specific patterns to reset counters and manage frame distribution, allowing for dynamic allocation of frames and on-demand updates, and employs repeaters to extend the reach of the video stream while maintaining frame rate and resolution standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If video content is distributed across multiple displays using daisy-chaining, then the distance between content source and displays can be extended, but video quality and frame rate consistency deteriorate
Solution Approach 1:
The patent segments the video stream into individual frames and distributes them sequentially across multiple displays in a daisy-chain configuration. Each display receives and processes frames independently, allowing the video signal to be extended over longer distances while maintaining frame rate consistency through synchronized frame delivery to each display segment.
2Device complexity
If frames are distributed to multiple displays sequentially, then device complexity is reduced, but synchronization and frame rate consistency become difficult to maintain
Solution Approach 1:
The patent implements periodic action by delivering video frames to multiple displays in a repeating sequential cycle. Each display receives frames at regular intervals corresponding to the source frame rate, ensuring synchronized and consistent frame delivery across all displays without requiring complex coordination mechanisms.
3Adaptability or versatility
If daisy-chaining is used to connect multiple displays, then adaptability to different display configurations is improved, but signal loss and quality degradation occur at extended distances
Solution Approach 1:
The patent uses each display in the daisy-chain as an intermediary device that receives, processes, and forwards the video signal to the next display. This intermediary approach allows the signal to be regenerated and maintained at quality standards across extended distances while supporting flexible display configurations through the modular chain structure.
Data Source
AI summary
In one or more embodiments, a display may receive a command that includes configuration information associated with a video stream, receive a video frame and may determine if the video frame is a synchronization frame. If the video frame is the synchronization frame, the display may reset one or more counters and may provide the video frame to another display or a repeater. If the video frame is not the synchronization frame, the display may determine if the video frame is to be displayed. If the video frame is to be displayed, the display may display the video frame and may provide the video frame to the other display or the repeater. If the video frame is not to be displayed, the display may provide the video frame to the other display or the repeater.