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1. WO1997013203 - PROCESS FOR MAINTAINING MICROSYNCHRONOUS OPERATION OF DOUBLE INFORMATION-PROCESSING UNITS

Publication Number WO/1997/013203
Publication Date 10.04.1997
International Application No. PCT/DE1996/001843
International Filing Date 26.09.1996
Chapter 2 Demand Filed 28.04.1997
IPC
G06F 11/18 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
11Error detection; Error correction; Monitoring
07Responding to the occurrence of a fault, e.g. fault tolerance
16Error detection or correction of the data by redundancy in hardware
18using passive fault-masking of the redundant circuits, e.g. by quadding or by majority decision circuits
H04L 12/933 2013.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
70Packet switching systems
931Switch fabric architecture
933Switch core, e.g. crossbar, shared memory or shared medium
H04L 12/939 2013.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
70Packet switching systems
931Switch fabric architecture
939Provisions for redundant switching, e.g. using parallel switching planes
H04Q 11/04 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
QSELECTING
11Selecting arrangements for multiplex systems
04for time-division multiplexing
H04L 12/70 2013.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
70Packet switching systems
H04L 12/931 2013.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
70Packet switching systems
931Switch fabric architecture
CPC
H04L 2012/5627
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
54Store-and-forward switching systems
56Packet switching systems
5601Transfer mode dependent, e.g. ATM
5625Operations, administration and maintenance [OAM]
5627Fault tolerance and recovery
H04L 2012/5674
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
54Store-and-forward switching systems
56Packet switching systems
5601Transfer mode dependent, e.g. ATM
5672Multiplexing, e.g. coding, scrambling
5674Synchronisation, timing recovery or alignment
H04L 49/1523
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
49Packet switching elements
15Interconnection of switching modules
1515Non-blocking multistage, e.g. Clos
1523Parallel switch fabric planes
H04L 49/153
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
49Packet switching elements
15Interconnection of switching modules
1515Non-blocking multistage, e.g. Clos
1523Parallel switch fabric planes
153ATM switching fabrics having parallel switch planes
H04L 49/1553
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
49Packet switching elements
15Interconnection of switching modules
1553Interconnection of ATM switching modules, e.g. ATM switching fabrics
H04L 49/40
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
49Packet switching elements
40Physical details, e.g. power supply, mechanical construction or backplane
Applicants
  • SIEMENS AKTIENGESELLSCHAFT [DE]/[DE] (AllExceptUS)
  • HOMER, Russell [US]/[DE] (UsOnly)
  • BRAZDRUM, Helmut [DE]/[DE] (UsOnly)
Inventors
  • HOMER, Russell
  • BRAZDRUM, Helmut
Priority Data
195 36 518.629.09.1995DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR AUFRECHTERHALTUNG DES MIKROSYNCHRONEN BETRIEBS VON GEDOPPELTEN INFORMATIONSVERARBEITENDEN EINHEITEN
(EN) PROCESS FOR MAINTAINING MICROSYNCHRONOUS OPERATION OF DOUBLE INFORMATION-PROCESSING UNITS
(FR) PROCEDE DE MAINTIEN DU FONCTIONNEMENT MICROSYNCHRONE D'UNITES DOUBLEES POUR LE TRAITEMENT D'INFORMATIONS
Abstract
(DE)
Die Einheiten (CTR0, CTR1) stehen unter dem Einfluß von voneinander unabhängigen Taktimpulsen (SCLK, RXCK). Zur Vermeidung des Verlustes der Mikrosynchronität bei der Informationsübergabe von einem Taktsystem zum anderen und durch unterschiedliche Fehlersituationen bei den durch die Einheiten empfangenen Informationen werden die empfangenen Informationen vor ihrer Weitergabe zur Verarbeitung bzw. die Ergebnisinformationen vor ihrer Aussendung zwischengespeichert. Bei fehlerfreiem Empfang erfolgt eine Crossynchronisation der Einheiten. Bei Ausbleiben eines Synchronsignals bei einer Partnereinheit wegen fehlerbehaftetem Empfang verwirft diese die empfangene Information trotz Fehlerfreiheit.
(EN)
The units (CTR0, CTR1) are under the influence of mutually independent clock pulses (SCLK, RXCK). In order to prevent the loss of microsynchronization when information is transferred from one clock system to another, and owing to different error situations as concerns the information received by the units, the information received is stored temporarily before being passed on for processing or the processing result information is stored temporarily before being emitted. If reception is error-free, the units are cross-synchronized. If, owing to faulty reception, a synchronous signal fails in the case of one partner unit, this unit rejects the information received despite the fact that it is error-free.
(FR)
Les unités (CTRO, CTR1) sont sous l'influence d'impulsions de synchronisation (SCLK, RXCK) indépendantes les unes des autres. Pour prévenir la perte de la microsynchronisation lors du transfert d'informations d'un système d'horloge vers l'autre système d'horloge et, en cas d'erreurs diverses, lors de la réception d'informations par les unités, sont mémorisées provisoirement les informations reçues avant leur retransmission pour traitement ou bien les résultats de traitement avant leur émission. Dans le cas d'une réception exempte d'erreurs, les unités émettent un signal de synchronisation et il y a une synchronisation croisée des unités. En l'absence d'un signal de synchronisation du côté de l'unité associée, l'unité concernée rejette les informations reçues au même titre que lors d'une réception entachée d'erreurs, et ce, même si les informations sont exemptes d'erreurs.
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