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1. (WO1985001849) ASYNCHRONOUS DIGITAL TIME MULTIPLEXING SYSTEM WITH DISTRIBUTED BUS

Pub. No.:    WO/1985/001849    International Application No.:    PCT/FR1984/000230
Publication Date: Apr 25, 1985 International Filing Date: Oct 15, 1984
IPC: G06F 13/364
H04L 12/28
Applicants: CHOMEL, Denis
DEVAULT, Michel
LE BRIS, Hervé
ROUAUD, Yvon
Inventors: CHOMEL, Denis
DEVAULT, Michel
LE BRIS, Hervé
ROUAUD, Yvon
Title: ASYNCHRONOUS DIGITAL TIME MULTIPLEXING SYSTEM WITH DISTRIBUTED BUS
Abstract:
The system comprises a first unidirectional bus (1) having a flow rate D for packets each including a tag with e bits and a block with b bits, sources (2i) having different flow rates di such that dm <= di <= dM < D, and access means (4i) to introduce packets into the first bus from the source. Allocation means (5) arranged at the reception end (3) of the first bus (1) form tag rasters identifying active sources. Each raster has a time duration T = b/dm shared into a number of time intervals N = dM/dm. Each time interval has a time duration υ = b/dM and includes a source tag. Each tag of a same active source with a flow rate di is repeated ni times in the raster T so that ni = di/dm if di/dm is an integer or that ni = 1 + an integer part of (di/dm) in the opposite case. The tag rasters are transmitted by the allocation means (5) in a second unidirectional bus (6) distributed to all access means (4i). The access means (4i) of each source (2i) sends a packet in the first bus (1) each time a block of b bits from the source is received and a tag of the source (2i) is detected in the second bus (6) after the reception of the block.