System and method for automatically adjusting key frame quantization parameter and frame rate
US11343467B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2021 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Feb 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A new real-time video communication system and method improves the clarity of shared screen by automatically adjusting the key frame's quantization parameter values. The adjustment depends on the underlying network's connection condition. When the connection bandwidth deteriorates, the key frame's quantization parameter value is further decreased on the value output from a standard H.264 encoder to derive a desirable quantization parameter value and thus achieve a desirable user experience of the shared screen. Moreover, the new real-time video communication system and method adjusts the frame rate of the shared screen based on the present quantization parameter value to achieve a more desirable user experience of the screen sharing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.