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1. US20090172198 - System and method for synchronising a data processing network

Office United States of America
Application Number 11817791
Application Date 01.03.2006
Publication Number 20090172198
Publication Date 02.07.2009
Grant Number 08160091
Grant Date 17.04.2012
Publication Kind B2
IPC
H04L 12/43
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
28characterised by path configuration, e.g. LAN or WAN
42Loop networks
427with decentralised control
43with synchronous transmission, e.g. time division multiplex (TDM), slotted rings
G06F 15/16
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
15Digital computers in general; Data processing equipment in general
16Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
Applicants ST-Ericsson SA
Inventors Hekstra-Nowacka Ewa
Van Den Hamer Peter
Van Berkel Cornelis Hermanus
Radulescu Andrei
Priority Data 05101717 04.03.2005 EP
Title
(EN) System and method for synchronising a data processing network
Abstract
(EN)

A data processing system according to the invention comprising a group of at least a first and a second module, wherein each module has a data processing facility, a clock for timing data transmissions from the module to another module, a time-slot counter for counting a number of time slots which are available for transmission of data. The modules have a first operational state wherein the counted number of time slots is less than or equal to a predetermined number, in which operational state data transmission is enabled, and a second operational state wherein the number is in excess of the predetermined number, in which second operational state data transmission is disabled, Each module has a notifying facility for notifying when it is in the second operational state. The data processing system has at least one detecting facility that detects whether the other modules have notified that they are in the second operational state and the modules each have an initialization facility for resetting the time-slot counter when the module is in the second operational state and each of the other modules has notified that it is in the second operational state.