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Advanced priority statistical multiplexer    
United States Patent6275502   
Link to this pagehttp://www.wikipatents.com/6275502.html
Inventor(s)Arimilli; Harinarayana (Coon Rapids, MN)
AbstractA data multiplexing network is described which multiplexes a plurality of asynchronous data channels with an asynchronous data stream representing compressed voice signals and/or facsimile signals onto a single synchronous data packet stream. The single synchronous data packet stream is then transmitted by a high speed statistical multiplexer over a composite link to a second site using a modified high-level synchronous data link control protocol with an overlay of an advanced priority statistical multiplexing algorithm. The asynchronous data channels and the compressed voice channel and/or facsimile signals are demultiplexed and reconstructed for sending to other asynchronous computer terminals and to a standard telephone or facsimile analog port at the second site, respectively. PBX trunk interfaces are also provided to allow PBX's to share the composite link between sites. Communication between the first site by voice or facsimile and the second site is transparent to the users. The multiplexer efficiently allocated the bandwidth of the composite link by detecting silence periods in the voice signals and suppressing the sending of the voice information to preserve bandwidth. An advanced priority statistical multiplexer is also described which dynamically allocates composite link bandwidth to both time-sensitive and non-time-sensitive data to maximize data throughout efficiency and quality while simultaneously reducing multiplexer processing overhead.



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Drawing from US Patent 6275502
Advanced priority statistical multiplexer - US Patent 6275502 Drawing
Advanced priority statistical multiplexer
Inventor     Arimilli; Harinarayana (Coon Rapids, MN)
Owner/Assignee     Multi-Tech Systems, Inc. (Mounds View, MN)
Patent assignment
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Publication Date     August 14, 2001
Application Number     08/885,534
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     June 30, 1997
US Classification     370/468 370/471 370/477 370/537
Int'l Classification     H04J 003/16 H04J 003/22
Examiner     Patel; Ajit
Assistant Examiner     Phunkulh; Bob A.
Attorney/Law Firm     Schwegman, Lundberg, Woessner & Kluth, P.A.
Address
Parent Case     This application is a continuation of U.S. patent application Ser. No. 08/333,365, filed Nov. 2, 1994 now issued as U.S. Pat. No. 5,757,801. This is a continuation in part of copending U.S. patent application Ser. No. 08/229,958 Now U.S. Pat. No. 5,682,386 which is filed Apr. 19, 1994 now issued as U.S. Pat. No. 5,757,801 entitled "Data/Voice/Fax Compression Multiplexer" which is hereby incorporated by reference.
Priority Data    
USPTO Field of Search     370/229 370/230 370/232 370/235 370/391 370/412 370/464 370/465 370/468 370/477 370/493 370/435 370/437 370/538 370/539 370/540 370/541 370/542 370/543
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