Media Device PIP Switching for Low-Latency Segment Substitution
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Solution Overview
Problem
Existing media devices struggle with rapid and precise switching of media segments due to limitations in their ability to handle video signal changes, leading to visual artifacts and latency issues in dynamic content insertion.
Innovation Solution
The implementation of a picture-in-picture (PIP) video path with a zero-dimensional frame and advanced decoding processes, combined with watermark triggers, allows for seamless substitution of media segments with low latency by pre-caching and synchronizing content for immediate display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional video signal switching is used to substitute media segments, then the media device can replace content segments, but the switching speed is limited and visual artifacts occur
Solution Approach 1:
The video signal processing is divided into multiple independent paths: a main video path and a picture-in-picture (PIP) path. The PIP path is further segmented into multiple layers that can be independently controlled. This segmentation allows the substitute content to be prepared and switched without affecting the main content playback, enabling faster switching speeds while maintaining visual quality.
Solution Approach 2:
The patent introduces a spatial dimension by utilizing the PIP window overlay mechanism. Instead of directly switching the main video signal, substitute content is rendered in a separate PIP dimension that can be dynamically adjusted. The PIP frame size can be varied from fully visible to completely transparent, providing an additional control dimension for seamless transitions without traditional switching artifacts.
2Loss of time
If rapid switching of media segments is attempted, then substitution timing can be precise, but latency and visual artifacts increase
Solution Approach 1:
The substitute content is pre-rendered and prepared in the PIP path before it needs to be displayed. The system maintains a buffer of pre-processed substitute segments that can be immediately switched to when triggered by watermark detection or other events. This preliminary preparation eliminates the need for real-time processing during the switching moment, reducing latency while maintaining visual quality.
Solution Approach 2:
The PIP window serves as an intermediary layer between the substitute content source and the main video output. Instead of directly replacing the main video signal, the substitute content passes through the PIP intermediary, which handles the transition smoothly by adjusting opacity and frame size. This intermediary mechanism buffers the switching operation, reducing latency impact on the main content while preventing visual artifacts.
3Loss of time
If picture-in-picture path is used with zero-dimensional frame, then switching latency is reduced, but device complexity increases
Solution Approach 1:
The PIP processing path is designed to handle multiple functions within a single unified architecture. The same PIP mechanism is used for both the substitute content display and as a transition intermediary. The zero-dimensional frame capability serves dual purposes: it enables instant switching when needed and provides a standardized interface for content rendering. This multi-functionality reduces the need for separate dedicated switching hardware, managing device complexity while maintaining low latency.
Data Source
AI summary
Methods, systems, devices, and computer-program products are described herein for providing dynamic content serving. The dynamic content serving technology can identify, in real-time, programming arriving at a client device, identify a specific media segment being received and/or displayed, and determine which pre-stored substitute media segment may be used to replace the identified segment. A picture-in-picture channel can be used to display the substitute media segment.