Apparatus and method for switching of data

Details Apparatus and method for switching of data Apparatus and method for switching of data

1976-01-19

1977-06-28

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 1516

Patent

active

040328996

ABSTRACT:
Apparatus and method for carrying out data switching; e.g. at a store-and-forward exchange node in a data communication network. Plural processors operate relative to multiple ports and traffic storage queues, partially on an exclusive basis and partially on a shared basis, to effectuate switching of data traffic with balanced sharing of the aggregate processing load. The processors control traffic processing functions (reception, storage and output transfer) on a varied assignment schedule. Supervisory signals exchanged between processors indicate status and destinations of currently stored traffic loads. The scheduling of output traffic to ports is handled by individual processors on an exclusive assignment basis. When a port is available to handle a given traffic segment (packet) destined for that port the respective processor having exclusive output scheduling responsibility for that port signals such availability to the processor having current responsibility over the transfer of said segment. The latter processor then executes the operations required to complete the transfer.

REFERENCES:
patent: 3214739 (1965-10-01), Gountanis et al.
patent: 3629854 (1971-12-01), Hauck et al.
patent: 3693161 (1972-09-01), Price et al.
patent: 3964056 (1976-06-01), Charpentier et al.
patent: 3970994 (1976-07-01), Jenny
Belgian Publication: "Scientific Bulletin from A.I.M.," 88th year, 1975, No. 2, Apr.-May-June, pp. 140-146, Article from Beeforth, et al., Further Work on Data Communication Systems at the University of Sussex, pp. 143 and 144, Point 3.3, FIG. 2.
UK Publication: "The Radio and Electronic Engineer," vol. 45, No. 3, Mar. 1975, pp. 131-137, Article from Halsall: A Microprocessor-Controlled Interface for Data Transmission, pp. 131 and 132, paragraph 2; FIG. 1; p. 136, FIG. 8.

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