Global patent index - EP 0974215 A2

EP 0974215 A2 2000-01-26 - DATA COMMUNICATION LINK IN A HIERARCHICAL COMMUNICATIONS NETWORK WITH A BUS, OPERATED USING AN INTERROGATION/RESPONSE PROTOCOL, THE SO-CALLED POLLING PROTOCOL

Title (en)

DATA COMMUNICATION LINK IN A HIERARCHICAL COMMUNICATIONS NETWORK WITH A BUS, OPERATED USING AN INTERROGATION/RESPONSE PROTOCOL, THE SO-CALLED POLLING PROTOCOL

Title (de)

DATENKOMMUNIKATIONSVERBINDUNG IN HIERARCHISCHEM KOMMUNIKATIONSNETZ MIT BUS, DIE NACH EINEM ABFRAGE/ANTWORT-PROTOKOLL, DEM SOGENANNTEN POLLING-PROTOKOLL, BETRIEBEN WIRD

Title (fr)

LIAISON DE COMMUNICATION DE DONNEES DANS UN RESEAU DE COMMUNICATION HIERARCHIQUE A BUS, FONCTIONNANT SELON UN PROTOCOLE DEMANDE/REPONSE, A SAVOIR SELON LE "PROTOCOLE D'APPEL SELECTIF"

Publication

EP 0974215 A2 (DE)

Application

EP 98921352 A

Priority

  • DE 9800710 W
  • DE 19714761 A

Abstract (en)

[origin: DE19714761A1] The invention relates to a data communication link in a hierarchical communication network with a bus, operated according to a polling protocol. Communication elements are arranged in the communications network in several hierarchically classified levels. Optionally, the bus contains hops consisting per se of non-busable point-to-point links. Communication elements are basically fitted with one connecting port each for connection with the upper and lower hierarchical level. The communication elements (KE B1, KE B2) used in the second highest hierarchical level (B) are provided with an interface with the lower level (C) that can be switched in the active direction and an interface with the higher hierarchical level (A). The communications elements (KE C1-3) used in the third highest hierarchical level (C) are provided with an interface with the higher hierarchical level (B) than can be switched in the active direction and an interface with the lower hierarchical level (D). When operating in the second highest hierarchical level, the communication elements are actuated with a permanently adjusted, activated interface in the direction of the lower hierarchical level (C).

IPC 1-7 (main, further and additional classification)

H04L 12/403; H04L 29/14

IPC 8 full level (invention and additional information)

H04L 12/403 (2006.01); H04L 29/14 (2006.01)

CPC (invention and additional information)

H04L 12/40189 (2013.01); H04L 12/403 (2013.01); H04L 12/437 (2013.01); H04L 69/40 (2013.01)

Citation (search report)

See references of WO 9845983A2

Designated contracting state (EPC)

CH DE ES FR GB IT LI SE

EPO simple patent family

DE 19714761 A1 19981015; EP 0974215 A2 20000126; WO 9845983 A2 19981015; WO 9845983 A3 19990311

INPADOC legal status

2001-11-07 [18W] WITHDRAWN

- Date of withdrawal: 20010917

2000-02-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991110

2000-01-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): CH DE ES FR GB IT LI SE