Yang, H., Ramakrishnan, K. K., Spinney, B., Jain, R., "Frame Removal Mechanism Using Count Of Frames And Delimiter Frame For Ring Networks [Method for operating a station on a computer network],"US Patent No. 5,331,636, Issued July 19, 1994, Filed May 11, 1992, Assigned to Digital Equipment Corporation.

Abstract

A station transmits a sequence of one or more frames on a token ring, keeping count of the frames transmitted. At the end of the transmitted frame the station originates onto the ring one or more coded marker frames and finally transmits a token. After the station transmission is begun, the station strips from the ring all the frames it receives, decrementing its count for each properly stripped frame, until either its count is reduced to zero or one of its marker frames is detected.

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