Multi-Conference Unit Transcoding for Video Conference Data Interaction
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Solution Overview
Problem
Conventional video conferencing using the H.239 format restricts participant interaction with presentation data, as only the token holder can transmit presentation data, limiting collaborative engagement during conferences.
Innovation Solution
A Multi-Conference Unit (MCU) that combines video and presentation data streams, allowing for the integration and transmission of data from multiple endpoints, enabling participants to interact with presentation data and allowing non-H.239 enabled endpoints to receive and process combined data streams, and a method for transcoding and encapsulating presentation data for transmission using protocols like H.323, H.320, or SIP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the token system is used to control presentation data transmission in H.239 conferences, then only one participant can transmit presentation data at a time, but this restricts participant interaction and collaborative engagement
Solution Approach 1:
The patent extracts the token control mechanism from the presentation data transmission process. Instead of requiring a token to transmit presentation data, the system allows any participant to send presentation data directly to the MCU, which then distributes it to all participants. This removes the restrictive token system while maintaining orderly transmission through the MCU's central control.
Solution Approach 2:
The patent introduces the MCU as an intermediary that mediates presentation data transmission between participants. Rather than participants directly transmitting to each other with token control, all presentation data passes through the MCU which manages distribution to all conference participants, enabling collaborative interaction while maintaining system control.
2Adaptability or versatility
If two separate video channels are used to transmit video and presentation data, then both data types can be transmitted simultaneously, but H.239 enabled endpoints are required which limits compatibility
Solution Approach 1:
The patent makes the MCU universal by enabling it to handle both H.239 and non-H.239 endpoints. The MCU can receive presentation data from H.239 enabled endpoints using separate video channels, and also receive data from non-H.239 endpoints using standard audio/conference channels, then distribute to all participants regardless of their endpoint capabilities.
Solution Approach 2:
The patent uses the MCU as an intermediary that translates between different endpoint protocols. Non-H.239 endpoints send data through standard channels to the MCU, which then processes and distributes it appropriately, allowing legacy endpoints to participate in conferences with H.239 endpoints without requiring all endpoints to be H.239 enabled.
3Manufacturing precision
If presentation data is transmitted at high resolution with low frame rate, then data detail is preserved, but the data cannot be updated in real time during the conference
Solution Approach 1:
The patent implements dynamic transmission parameters for presentation data. The system can adjust between high resolution/low frame rate for static presentation content and lower resolution/higher frame rate for real-time collaborative annotations and modifications. This allows the same presentation data stream to adapt its quality parameters based on whether the content is static or being actively modified by participants.
Data Source
AI summary
The integration of data and video conference data allows presentations to be given more effectively and people to write down things which are hard to deliver using speech alone, for example mathematical formulae. Often when giving a presentation though it can be advantageous to be able to interact not only with a person verbally but also on a written level, for example a user may wish to draw on slides being used in a presentation to illustrate a point. At present only one user can transmit this type of data to the participants at any one time and only to participants having an H.239 compatible endpoint. The presentation invention enables multiple users to interact using written rather than spoken means without having to pass permission to transmit written data from one participant to another.