Video Conference Data Sharing Region Selection
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Solution Overview
Problem
In video conference systems, differences in display resolutions and sizes between user and other party terminals, as well as varying device performance, lead to poor image quality and inefficient data transmission, especially when text content is scaled down.
Innovation Solution
A method and apparatus that allow users to select and transmit only a portion of the content optimized for the other party's display, with features like pop-up windows, user input for window arrangement, and indicators for sizing, and the option to transmit only text when applicable, reducing data transmission and improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the PC scales down its resolution to match the VCS transmission capability, then the data can be transmitted through the network, but the image quality deteriorates and text becomes unrecognizable
Solution Approach 1:
The patent divides the screen content into multiple regions of interest (ROIs) with different importance levels. By segmenting the display area, the system can apply different scaling strategies to different regions, preserving text readability in critical areas while allowing less important regions to be scaled down more aggressively for transmission.
Solution Approach 2:
The patent applies different quality levels to different regions of the screen based on their importance. Critical regions containing text or key information maintain higher resolution and quality during scaling, while non-critical regions are scaled down more. This local quality differentiation resolves the contradiction by maintaining image quality where needed while enabling transmission elsewhere.
2Manufacturing precision
If the PC transmits full-resolution content, then the image quality is maintained, but the data transmission amount increases and network bandwidth is consumed
Solution Approach 1:
The patent extracts and identifies only the critical regions containing important information such as text or key content. By taking out these essential regions from the full screen content, the system transmits only the necessary high-quality portions at full resolution while omitting or compressing less important areas, thereby reducing overall data transmission amount while maintaining image quality for critical elements.
Solution Approach 2:
The patent applies partial action by transmitting high-quality content only for critical regions rather than the entire screen. This selective approach ensures that essential information maintains full resolution and quality while reducing the total data volume by applying lower quality or compression to non-critical regions.
3Adaptability or versatility
If the VCS applies high scaling to match portable device displays, then the data fits the display size, but text recognition becomes almost impossible
Solution Approach 1:
The patent performs preliminary identification and marking of text-containing regions before the scaling process. By pre-processing the content to locate critical text areas, the system can then apply protective scaling measures or resolution maintenance specifically to these regions, ensuring text readability is preserved even when adapting to portable device display constraints.
4Adaptability or versatility
If different users participate with devices of different performances, then the system becomes more versatile, but performance differences cause inconsistent image quality and transmission efficiency
Solution Approach 1:
The patent implements dynamic adaptation where the system automatically adjusts the scaling and quality parameters based on the receiving device's performance characteristics. By making the transmission parameters dynamic rather than static, the system maintains reliable and consistent image quality across different device performances while preserving versatility in supporting multiple device types.
Data Source
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AI summary
A method and an apparatus for sharing data in a Video Conference System (VCS) are provided. According to an embodiment, when a user wants to share data with the other party in the VCS, only a user selected region and not the entire screen is converted into a format optimized for the other party's display and then transmitted to the other party.