Virtual MCU for Multi-Unit Telepresence Cost Reduction
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Solution Overview
Problem
The high cost of dedicated hardware multipoint control units (MCUs) for multi-screen telepresence videoconferencing setups and the need for improved methods to present active participants in videoconferences, especially when multiple locations with single conferencing units are involved.
Innovation Solution
A system and method where a first multi-unit location acts as the host or MCU, receiving and managing videoconferencing information from multiple locations, determining active participants based on audio levels, and providing composite video feeds to other locations, allowing seamless communication and presentation without the need for expensive hardware MCUs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated hardware multipoint control units (MCUs) are used for multi-screen telepresence videoconferencing, then the videoconferencing functionality and participant management are improved, but the hardware cost increases significantly
Solution Approach 1:
The patent uses software-based virtual MCU that replicates the functionality of hardware MCUs through virtualization. The videoconferencing system creates virtual instances of control units that can manage multiple screens and participants, eliminating the need for expensive dedicated hardware while maintaining full functional capability.
Solution Approach 2:
The patent replaces the mechanical hardware MCU system with a software-based virtualization architecture. Instead of physical dedicated control units, the system uses software running on general-purpose hardware to provide MCU functionality, thereby reducing hardware costs while maintaining reliability.
2Reliability
If multiple displays and cameras are deployed at one or more locations for multi-screen telepresence, then the communication quality and participant visibility are improved, but the system complexity and deployment cost increase
Solution Approach 1:
The patent creates a universal videoconferencing platform where a single software-based virtual MCU can manage multiple displays and cameras across different locations. This multi-functional system can adapt to various configurations (single-screen or multi-screen, single-point or multi-point) without requiring separate dedicated hardware for each configuration, thereby reducing overall system complexity.
Solution Approach 2:
The patent implements dynamic resource allocation and switching capabilities in the virtual MCU, allowing the system to adaptively manage multiple displays and cameras based on active participants and conference needs. This dynamic approach simplifies the system by providing flexible, on-demand resource management rather than requiring fixed, dedicated connections for each device.
3Productivity
If active participant determination and switching is implemented in multi-screen telepresence, then the presentation efficiency and participant engagement are improved, but the control complexity increases
Solution Approach 1:
The patent implements automatic active participant detection using audio level analysis and other criteria, with the virtual MCU continuously monitoring conference participation and dynamically switching displays based on detected active speakers. This automated feedback mechanism eliminates manual control complexity while improving presentation efficiency by ensuring active participants are always visible on appropriate displays.
Data Source
AI summary
Performing a videoconference. The videoconference may be established at a first videoconferencing location between at least three videoconferencing locations. The locations may include the first location, a second location, and a third location. The first location may maintain a plurality of videoconferencing units and the second and third locations may each maintain a single videoconferencing unit. A first videoconferencing unit of the first location acts as a multipoint control unit (MCU) of the videoconference. The MCU may receive respective videoconferencing information from each videoconferencing unit of the videoconference. The MCU may provide active videoconferencing information of an active participant to ones of the videoconferencing units at the second and third locations corresponding to non-active participants. The MCU may provide second and third videoconference information from the videoconferencing units of the second and third locations for presentation at the first location. This provision may be performed independently of the active participant.