Global Patent Index - EP 0992140 A1

EP 0992140 A1 2000-04-12 - METHOD AND SYSTEM FOR AVOIDING COLLISIONS IN AN INFRARED WIRELESS NETWORK

Title (en)

METHOD AND SYSTEM FOR AVOIDING COLLISIONS IN AN INFRARED WIRELESS NETWORK

Title (de)

VERFAHREN UND SYSTEM ZUR KOLLISIONSVERMEIDUNG IN EINEM DRAHTLOSEN INFRAROTNETZ

Title (fr)

PROCEDE ET SYSTEME DESTINES A EVITER DES COLLISIONS DANS UN RESEAU INFRAROUGE SANS FIL

Publication

EP 0992140 A1 (EN)

Application

EP 98928509 A

Priority

  • IL 9800291 W
  • IL 12117997 A

Abstract (en)

[origin: WO9900932A1] A method and system for avoiding collision between data streams transmitted by at least a pair of wireless transmitters (16, 20, 21) operating on substantially equal frequencies and coupled via respective communication channels (17, 22, 23) to respective communication devices (14, 18, 19) having associated therewith respective carrier sense means (12, 28, 29) which are responsive to a signal received thereby for preventing the respective communication device from initiating or continuing transmission of data. According to the method whenever data is wireless transmitted by one of the transmitters, said one of the transmitters sending a fictitious data signal along the respective communication channel so as to be detected by the respective carrier sense means.

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

H04L 12/28; H04B 7/26; H04L 12/413

IPC 8 full level (invention and additional information)

H04L 12/28 (2006.01); H04L 12/56 (2006.01); H04L 12/413 (2006.01)

CPC (invention and additional information)

H04W 16/14 (2013.01); H04W 74/00 (2013.01); H04W 84/12 (2013.01)

Citation (search report)

See references of WO 9900932A1

Designated contracting state (EPC)

DE GB

EPO simple patent family

WO 9900932 A1 19990107; WO 9900932 A8 19990415; AU 8032498 A 19990119; EP 0992140 A1 20000412; IL 121179 A 20000229; IL 121179 D0 19971120

INPADOC legal status


2007-02-02 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Ref Legal Event Code: WD

- Ref Document Number: 1028306

- Country of Ref Document: HK

2002-08-21 [18R] REFUSED

- Ref Legal Event Code: 18R

- Effective date: 20020329

2001-08-08 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010622

2000-04-12 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000126

2000-04-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE GB