Precoded Video Bitstream for Protocol Compatibility
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Solution Overview
Problem
Current videoconferencing systems lack efficient methods for sharing computer video data, particularly incompatibilities with existing communications protocols and standards, which hinder seamless video transmission across networks.
Innovation Solution
A method involving acquiring video on a computer, coding it to be compatible with videoconferencing standards like ITU-T H.239 and SIP, and transmitting it via TCP/IP networks or peer-to-peer wireless links, allowing for packaging and transmission to videoconferencing units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If video is acquired and transmitted directly without coding, then transmission speed is improved, but compatibility with videoconferencing protocols deteriorates
Solution Approach 1:
The patent applies preliminary action by coding the video data on the computer before transmission to the videoconferencing unit. The computer codes the video in advance according to the required videoconferencing protocol (such as ITU-T H.239 or SIP), so that when the video is transmitted and received by the videoconferencing unit, it is already in the correct format and requires minimal or no additional processing. This resolves the contradiction by performing the compatibility transformation beforehand, allowing fast transmission while maintaining protocol compatibility.
2Adaptability or versatility
If video is fully coded on the computer, then compatibility with videoconferencing standards is improved, but device complexity increases
Solution Approach 1:
The patent introduces an intermediary approach by having the computer code the video data into an intermediate format that is compatible with videoconferencing protocols, rather than requiring the videoconferencing unit to perform complex decoding operations. The computer acts as the intermediary that performs the coding function, while the videoconferencing unit simply receives and processes the already-coded data. This distribution of complexity resolves the contradiction by shifting the processing burden to the computer side, which is better equipped for such tasks.
3Adaptability or versatility
If video transmission is performed across complex networks (TCP/IP, wireless), then adaptability is improved, but transmission reliability deteriorates
Solution Approach 1:
The patent applies preliminary action by coding the video data on the computer before transmission across complex networks. The video is coded according to videoconferencing protocols (such as ITU-T H.239 or SIP) that are designed to be compatible with various network types including TCP/IP and wireless networks. This pre-coding ensures that the video data is properly formatted and packaged for reliable transmission across different network infrastructures, resolving the contradiction by preparing the data in advance for the specific network environment it will traverse.
Data Source
AI summary
Sharing computer video in a videoconference. The method may include acquiring video on a computer. The method may also include coding the acquired video on the computer. Transmitting the coded video from the computer to a videoconferencing unit may also be included in the method. Also, the method may include packaging the transmitted video coded on the videoconferencing unit. Furthermore, the method may include transmitting the packaged video to a videoconferencing destination.