Entry name：Adaptive real-time audio and video transmission method and system based on silence
Format	Brokered IP Deals
Industry	Electronics & Electrical Appliances
IP Holder	City University of Hong Kong
IP Originator	--
Entry name	Adaptive real-time audio and video transmission method and system based on silence
Registration ID	美国专利申请号：12/101048
Region	175
Application Date	2022-06-06 00:00:00
Grant Date	2022-12-31 00:00:00
Project Location	ChinaHong Kong

City University of Hong Kong, or CityU for short, was founded in 1984, formerly known as the City Polytechnic of Hong Kong, and was upgraded to City University of Hong Kong in 1994. Each year, CityU offers about 130 high-quality undergraduate and research degree courses of different levels and majors to about 20000 students. The university now has schools of business, humanities and Social Sciences, science and engineering, creative media, energy and environment, and law. Apart from the school of energy and environment, the above-mentioned colleges are now open to the mainland. More than 48% of the nearly 600 outstanding professors from 30 countries, including fields and Wolff prize winners, 10 world-class academicians, 12 Yangtze scholars, 17 members of the international society of electrical and Electronic Engineering (IEEE), 6 Fulbright Fulbright senior scholars, and 5 Croucher Most of them hold doctorates from well-known overseas universities, and have long held full-time teaching and research positions in overseas universities. For six consecutive years (2004-2009), CityU has been selected as one of the 200 best universities in the world in the times higher education supplement. From 2007 to 2009, CityU was also selected as one of the 150 best universities in the world. In 2009, CityU jumped to 124. CityU ranked 18 in the list of Asian universities. CityU ranked in the international higher education information institution quacquarelli symbols In 2010, the world university ranked 129, the Asian University ranked 15, the social sciences of CityU ranked 105, and the humanities, engineering and information technology ranked 107.

Technology	IP based real-time audio-visual communication applications, such as Skype and MSN, are very popular, but the quality of audio-visual transmission varies. The technology in the present patent attempts to solve this problem by detecting the silence time and conversation spurt time in the conversation, and then actively transmitting the video frame corresponding to the silence time or conversation spurt time. Specifically, the method comprises the following steps: first, detecting silence with a voice coding decoder; second, dividing the current video frame into multiple video clips according to the silence time; third, transmitting video clips in the silence time; fourth, receiving video and voice clips with a receiver; and finally, playing back the clips with a receiver. The audio-visual transmission management device includes a transmission module, a receiving module, a transmission voice stream analyzer, and a management module. The invention refers to a large number of adaptive audio-visual transmission strategies based on silence.
Advantages	Better coordination between video stream and voice stream reduces chatter and delay in voice stream
Possible applications	For vvoip applications
Category	Digital broadcasting and imaging technology