The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 2010
Filed:
Feb. 27, 2008
Xiaohui Gu, Chappaqua, NY (US);
Zon-yin Shae, South Salem, NY (US);
Zhen Wen, Chappaqua, NY (US);
Philip S. Yu, Chappaqua, NY (US);
Xiaohui Gu, Chappaqua, NY (US);
Zon-Yin Shae, South Salem, NY (US);
Zhen Wen, Chappaqua, NY (US);
Philip S. Yu, Chappaqua, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system and computer program product for establishing multi-party VoIP conference audio calls in a distributed, peer-to-peer network where any number of nodes are able to arbitrarily and asynchronously start or stop producing audio output to be mixed into a single composite audio stream that is distributed to all nodes. A single distribution tree is used that has optimal communications characteristics to distribute the composite audio signal to all nodes. An audio mixing tree is established and maintained by adaptively and dynamically adding and merging intermediate mixing nodes operating between user nodes and the root of the single distribution tree. The intermediate mixing nodes and the root of the single distribution tree are all hosted, in an exemplary embodiment, on user nodes that are endpoints of the distribution tree.