Panoramic Video Patch Distribution via Dual Networks
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Solution Overview
Problem
Existing navigation methods in panoramic video sequences face challenges in providing seamless and fluid interaction due to network congestion and latency, particularly in distributing video patches across different transmission networks, which affects navigation speed and fluidity.
Innovation Solution
The method employs at least two distinct transmission networks for video patches, with a general broadcast network and a personalized broadband network, allowing for distributed transmission and adjusting detection zones based on network speed to synchronize pre-fetching and display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If video patches are transmitted through a single network, then the system complexity is low, but network congestion occurs and navigation fluidity deteriorates
Solution Approach 1:
The patent divides the video stream into multiple video patches and transmits them through different networks (broadcast and narrowcast) simultaneously. This segmentation allows the system to utilize multiple transmission channels, reducing network congestion and improving navigation fluidity while maintaining manageable system complexity through modular architecture.
Solution Approach 2:
The patent introduces an additional transmission dimension by using both broadcast and narrowcast networks concurrently. This multi-dimensional transmission approach allows video patches to be delivered through parallel channels, increasing overall system capacity and navigation performance without proportionally increasing complexity.
2Speed
If detection zone size is increased to pre-fetch video patches earlier, then navigation speed improves, but bandwidth consumption increases
Solution Approach 1:
The patent implements pre-fetching of video patches by defining detection zones that trigger early retrieval of video content before it is strictly needed. This preliminary action ensures video patches are ready in buffers before display, improving navigation speed and perceived fluidity while the dual-network architecture optimizes bandwidth usage by distributing load.
Solution Approach 2:
The patent dynamically adjusts detection zone parameters and pre-fetching thresholds based on network conditions, user behavior patterns, and video importance. This parameter optimization allows the system to achieve high navigation speed while controlling bandwidth consumption by only pre-fetching when necessary and prioritizing critical video content.
3Productivity
If multiple transmission networks are used, then network congestion is reduced and navigation fluidity improves, but system complexity increases
Solution Approach 1:
The patent segments the video transmission task across multiple networks (broadcast for common content, narrowcast for personalized content). This segmentation improves navigation fluidity by distributing network load while maintaining systematic organization through clear division of transmission responsibilities.
Solution Approach 2:
The patent creates a universal playback system that can handle video patches from multiple network sources through a unified architecture. The playback device integrates broadcast and narrowcast inputs, managing them through common protocols and interfaces, thereby improving navigation fluidity without proportionally increasing system complexity.
4Loss of time
If video patches are pre-fetched from slower networks, then display timing is synchronized, but bandwidth usage increases
Solution Approach 1:
The patent pre-fetches video patches from slower broadcast networks in advance of their display time, storing them in buffers. This preliminary retrieval action ensures synchronized display timing across multiple network sources while the system intelligently manages bandwidth by only pre-fetching when timing requirements necessitate it.
Solution Approach 2:
The patent creates timing cushions by pre-fetching video patches early and storing them in buffers before they are needed for display. This beforehand cushioning compensates for slower network transmission speeds and ensures synchronized playback without requiring excessive continuous bandwidth, as the buffering absorbs timing variations.
Data Source
AI summary
The invention relates to a method for navigation in a panoramic video sequence displayed on a user terminal. The video sequence is divided into a plurality of non-overlapping video patches each corresponding to a zone of the video sequence. The video patches required to form a zone of the panoramic video sequence to be displayed on a screen of the user terminal, called the visibility zone, are determined according to navigation commands.According to the invention, the video patches are provided to the user terminal, for one part, via a first transmission network and, for another part, via a second transmission network distinct from said first transmission network.