Global Patent Index - EP 1080571 A1

EP 1080571 A1 2001-03-07 - COMMUNICATIONS WEB FOR PSTN SUBSCRIBERS

Title (en)

COMMUNICATIONS WEB FOR PSTN SUBSCRIBERS

Title (de)

KOMMUNIKATIONSNETZE FÜR FERNSPRECHNETZTEILNEHMER

Title (fr)

RESEAU DE COMMUNICATIONS POUR ABONNES DU RTPC

Publication

EP 1080571 A1 (EN)

Application

EP 99923227 A

Priority

  • US 9911078 W
  • US 8372698 A

Abstract (en)

[origin: WO9962241A1] Systems for connecting telecommunications infrastructure lines t o telephones, handsets, computers, telecopy machines and other end user interfaces or consumer electronics devices in a residence or business. Systems according to the present invention include Network Control Units which form the center of a star topology and which communicate via RF link with Wireless Access Units and handsets. Wireless Access Units feature an interface, such as, for example, a standard telephone jack, for accommodating a telephone, a fax machine, a compute modem or other device. In order to compensate for line loss, mismatch and other incompatibilities between the public telecommunications network on the one hand and systems according to the present invention on the other, new encoding techniques according to the present invention employ codecs which encode and decode using 10 bit code words, as compared to conventional mu-law encoding and decoding which uses 8 bit code words. The resulting 16 bit performance yields a subjective SIMILAR 90dB signal to noise ratio over the radiofrequency link of systems of the present invention. Such encoding techniques and 10 bit code segments can easily be accommodated by present processing capacity which was not available in the era in which mu-law encoding was adapted.

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

H04M 1/72; H04Q 11/04

IPC 8 full level (invention and additional information)

H04Q 3/58 (2006.01); H04M 1/723 (2006.01); H04M 1/725 (2006.01); H04Q 7/22 (2006.01); H04Q 7/24 (2006.01); H04Q 7/26 (2006.01); H04Q 7/30 (2006.01); H04Q 11/04 (2006.01); H04M 1/253 (2006.01)

CPC (invention and additional information)

H04M 1/725 (2013.01); H04M 1/723 (2013.01); H04Q 11/04 (2013.01); H04Q 11/0435 (2013.01); H04M 1/2535 (2013.01); H04Q 2213/13034 (2013.01); H04Q 2213/1305 (2013.01); H04Q 2213/13076 (2013.01); H04Q 2213/1308 (2013.01); H04Q 2213/13092 (2013.01); H04Q 2213/13093 (2013.01); H04Q 2213/13096 (2013.01); H04Q 2213/13098 (2013.01); H04Q 2213/13106 (2013.01); H04Q 2213/13175 (2013.01); H04Q 2213/13179 (2013.01); H04Q 2213/1319 (2013.01); H04Q 2213/13209 (2013.01); H04Q 2213/1324 (2013.01); H04Q 2213/13292 (2013.01); H04Q 2213/1332 (2013.01); H04Q 2213/13322 (2013.01); H04Q 2213/13389 (2013.01); H04Q 2213/13405 (2013.01)

Citation (search report)

See references of WO 9962241A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9962241 A1 19991202; AR 014589 A1 20010228; AU 4005099 A 19991213; BR 9910662 A 20020129; CA 2330373 A1 19991202; CN 1302502 A 20010704; EP 1080571 A1 20010307; JP 2002517134 A 20020611; MX PA00011484 A 20020702; RU 2000132215 A 20021127

INPADOC legal status


2003-06-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021203

2001-03-07 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001206

2001-03-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE