Wireless Video Aggregation for Multi-Participant Conferencing
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Solution Overview
Problem
Existing video conferencing systems struggle to effectively capture and display multiple participants in a room, leading to reduced communication effectiveness due to limited camera angles and the difficulty in following remote participants' interventions, especially in impromptu conferences without dedicated equipment.
Innovation Solution
An apparatus that wirelessly connects to local mobile devices and a processing device to generate and transmit a combined video stream from multiple cameras, allowing participants to follow remote interventions and establish eye-to-eye contact by mirroring the display on mobile devices, using IEEE 802.11 interfaces and involving mobile devices' cameras and microphones for image and audio capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single webcam is mounted on a television set in a meeting room, then the apparatus is economical and easy to set up, but the limited framing angle (90° at most) causes most participants to be either not clearly visible or not captured at all
Solution Approach 1:
The system divides the meeting room into multiple zones by deploying several mobile devices (smartphones, tablets, or laptops) positioned at different locations. Each device captures video from its local perspective, and the server combines these segmented views into a comprehensive composite video stream that includes all participants, thereby overcoming the single-camera field-of-view limitation.
Solution Approach 2:
The server merges video streams from multiple mobile devices into a single composite video output. This combining process integrates fragmented views from different angles and positions to create a unified comprehensive view of all meeting participants, resolving the contradiction between using simple individual devices and achieving complete participant coverage.
2Loss of information
If participants move closer to one another to be captured by the webcam, then visibility improves, but participants get into uncomfortable positions and communication effectiveness is reduced
Solution Approach 1:
Instead of requiring all participants to converge in one location, the system segments the video capture function across multiple mobile devices positioned throughout the room. Each device independently captures participants in its vicinity, allowing everyone to remain in comfortable, natural positions while still being included in the overall video feed.
3Device complexity
If the screen of the external device is small and there are many participants, then the apparatus remains simple and portable, but following the interventions of remote participants becomes difficult and inconvenient
Solution Approach 1:
The system uses universal mobile devices (smartphones, tablets, laptops) that participants already possess, eliminating the need for dedicated specialized equipment. These multi-functional devices serve as both video capture points and display terminals, providing each participant with an individual view of all remote participants through their own device's screen, thereby overcoming the limitation of small external screens.
4Device complexity
If the gaze of a local participant is directed towards the screen of the laptop for watching remote participants, then the setup is simple, but no eye-to-eye contact can be established between local and remote participants
Solution Approach 1:
Instead of having participants look at a remote screen to see each other (which breaks eye contact), the system inverts the approach by using the participant's own mobile device camera to capture their face. This captured video is then displayed on their device screen, allowing them to look directly into the camera (establishing eye-to-eye contact) while seeing remote participants on their own device display.
Data Source
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AI summary
An apparatus for video communication connected to a local processing device executing a video conferencing software for communicating with a remote location, the apparatus being configured to be locally wirelessly connected to a plurality of mobile devices each comprising a display and a video camera, to receive a plurality of video signals related to a plurality of participants in a video conference generated by the video cameras of the plurality of local mobile devices, to generate a video stream based on said plurality of video signals received from the plurality of local mobile devices, to transmit the video stream to said local processing device, to receive from the local processing device an output signal representing a content displayed by a display of the processing device when executing the video conferencing software and to share with the plurality of local mobile devices the output signal.