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High-performance parallel interface to synchronous optical network gateway

United States Patent

5,581,566
December 3, 1996
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
A system of sending and receiving gateways interconnects high speed data interfaces, e.g., HIPPI interfaces, through fiber optic links, e.g., a SONET network. An electronic stripe distributor distributes bytes of data from a first interface at the sending gateway onto parallel fiber optics of the fiber optic link to form transmitted data. An electronic stripe collector receives the transmitted data on the parallel fiber optics and reforms the data into a format effective for input to a second interface at the receiving gateway. Preferably, an error correcting syndrome is constructed at the sending gateway and sent with a data frame so that transmission errors can be detected and corrected in a real-time basis. Since the high speed data interface operates faster than any of the fiber optic links the transmission rate must be adapted to match the available number of fiber optic links so the sending and receiving gateways monitor the availability of fiber links and adjust the data throughput accordingly. In another aspect, the receiving gateway must have sufficient available buffer capacity to accept an incoming data frame. A credit-based flow control system provides for continuously updating the sending gateway on the available buffer capacity at the receiving gateway.
St. John; Wallace B. (Los Alamos, NM), DuBois; David H. (Los Alamos, NM)
The Regents of the Univ. of California Office of Technology Transfer (Alameda, CA)
08/ 369,833
January 6, 1995
BACKGROUND OF THE INVENTION This invention relates to high speed long distance computer networking and, more particularly, to a system for transmitting data from an interface having a first bandwidth over transmission links having a second bandwidth less than the first bandwidth. This invention was made with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The government has certain rights in the invention.