Arthur Larsen

US Patent:

42362458, Nov 25, 1980

Filed:

Apr 17, 1979

Appl. No.:

6/030811

Inventors:

Stanley L. Freeny - Middletown NJ
Arthur B. Larsen - Colts Neck NJ
Thomas J. Pedersen - Lincroft NJ

Assignee:

Bell Telephone Laboratories, Incorporated - Murray Hill NJ

International Classification:

H04J 602

US Classification:

370 94

Abstract:

Communication between a plurality of data terminals (101(1) to 101(b)) serially interconnected with a main terminal (102) is provided by data frames or packets having a data portion for accommodating a burst of data preceeded by a header portion for accommodating address data followed by an empty/full "flag" bit indicating whether the addressee station has withdrawn the data burst. If a terminal has a data burst to send, it locates an empty packet, inserts the addressee designation in the packet subsequent to any prior address that the packet might contain, interposes delay in the passage therethrough of the packet so that the duration is increased to accommodate the new address and overwrites the data burst into the data portion. The main terminal detects when the data burst is withdrawn and signals the originating terminal to remove the data delay.