Global Patent Index - EP 0976203 A1

EP 0976203 A1 2000-02-02 - DATA COMMUNICATIONS TERMINAL AND METHOD OF ADJUSTING A POWER SIGNAL GENERATED THEREFROM

Title (en)

DATA COMMUNICATIONS TERMINAL AND METHOD OF ADJUSTING A POWER SIGNAL GENERATED THEREFROM

Title (de)

DATENÜBERTRAGUNGSENDGERÄT UND VERFAHREN ZUM EINSTELLEN EINES DAVON GENERIERTEN LEISTUNGSSIGNALS

Title (fr)

TERMINAL DE COMMUNICATION DE DONNEES ET PROCEDE DE REGLAGE DU SIGNAL DE PUISSANCE PRODUIT PAR CE TERMINAL

Publication

EP 0976203 A1 (EN)

Application

EP 98964796 A

Priority

  • US 9827003 W
  • US 2582698 A

Abstract (en)

[origin: WO9943096A1] A data communications terminal (102) includes an antenna circuit (106) for delivering a power signal to a portable data device. The terminal further encompasses a method for automatically adjusting the power seen by the portable data device without any communications feedback from the portable data device by monitoring an impedance characteristic for the antenna circuit. When a change in the monitored impedance characteristics is detected, the data communications terminal adjusts a power level for the power signal delivered to the portable data device.

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

H04B 1/59

IPC 8 full level (invention and additional information)

G01R 27/02 (2006.01); G01R 27/04 (2006.01); G06K 7/00 (2006.01); H04B 1/59 (2006.01)

CPC (invention and additional information)

G06K 19/0701 (2013.01); G06K 7/0008 (2013.01); G06K 19/0715 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

WO 9943096 A1 19990826; AU 2004099 A 19990906; BR 9808937 A 20000801; CA 2287441 A1 19990826; CN 1252908 A 20000510; EP 0976203 A1 20000202; EP 0976203 A4 20020828; JP 2001520855 A 20011030; KR 20010006519 A 20010126; TR 9902594 T1 20000721

INPADOC legal status


2002-10-23 [18W] WITHDRAWN

- Date of withdrawal: 20020830

2002-08-28 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20020711

2002-08-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

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

2002-08-28 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7G 06K 7/00 A

2000-04-26 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000228

2000-02-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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