Video Processing Bandwidth Reduction via Selective Signal Extraction
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Solution Overview
Problem
Current video/audio processing systems connected by IP networks face bandwidth limitations, particularly in live video productions, due to the need to transmit full input signals for each channel, leading to inefficiencies and high costs.
Innovation Solution
A method and apparatus that selectively transmit only the relevant portions of input signals forming the composed image, using packetized data links between processing and input units, where the processing unit determines which parts of the signal to request from input units, reducing bandwidth requirements by limiting transmission to a maximum of twice the bandwidth needed for a full-size input signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If full input signals are transmitted for each channel in IP network-based video processing systems, then routing flexibility and adaptability are improved, but bandwidth consumption increases significantly
Solution Approach 1:
The patent extracts and transmits only the necessary portions of video signals rather than complete signals. The system identifies and transmits only the specific signal segments required for the current program output composition, eliminating redundant data transmission while maintaining routing flexibility through selective signal extraction from multiple input channels.
Solution Approach 2:
The patent segments video signals into transmissible portions based on the specific composition requirements. The system divides the signal transmission task into selective segments, where only the necessary parts of input signals are extracted and transmitted over the network, rather than transmitting complete signals for all channels.
2Adaptability or versatility
If multiple input signals are routed to multiple destinations simultaneously in distributed video production, then system versatility is improved, but network bandwidth limitations are exceeded
Solution Approach 1:
The system extracts only the necessary signal portions required for each specific routing destination and composition. By selectively extracting and transmitting only the needed signal segments rather than complete signals, the system enables multiple simultaneous routings within available network bandwidth constraints.
Solution Approach 2:
The patent applies partial action by transmitting only the necessary portions of signals rather than complete signals. This partial transmission approach allows the system to handle multiple routing operations simultaneously without exceeding network bandwidth, as each transmission contains only the minimal required data.
3Adaptability or versatility
If IP networks are used to connect processing units for distributed video production, then system complexity is reduced and adaptability is improved, but bandwidth limitations and operational complexity increase
Solution Approach 1:
The system automatically extracts and identifies the necessary signal portions for transmission based on the program output composition. This automated extraction process simplifies bandwidth management by eliminating the need for manual bandwidth allocation and optimization, reducing operational complexity while maintaining distributed processing adaptability.
Solution Approach 2:
The system performs self-service by automatically determining and transmitting only the necessary signal portions required for the current composition. The bandwidth management is handled autonomously through the composition-based signal selection mechanism, eliminating the need for external bandwidth optimization interventions.
Data Source
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AI summary
In video productions the production signal is frequently a composed image consisting of many different source signals. A typical example of such composed images are news programs, sales programs etc. where significant portions of the composed image consists of inserted advertisements, stock market information, breaking news and the like as inserted tiles or bars. The total number of input signals involved to create the composed image can easily reach approximately 15. Normally, the necessary bandwidth to transfer all input signals is simply not available in IP networks. Therefore, a new method for operating video processing system based on IP networks is suggested. The method proposes to transfer only the relevant parts of the input signals which are needed to create a composed image and thus effectively limit bandwidth requirements.