Global Patent Index - EP 2021972 A1

EP 2021972 A1 2009-02-11 - NEAR FIELD RF COMMUNICATORS AND NEAR FIELD COMMUNICATIONS-ENABLED DEVICES

Title (en)

NEAR FIELD RF COMMUNICATORS AND NEAR FIELD COMMUNICATIONS-ENABLED DEVICES

Title (de)

NAHFELD-HF-KOMMUNIKATOREN UND NAHFELD-KOMMUNIKATIONSBEFÄHIGTE EINRICHTUNGEN

Title (fr)

APPAREILS DE COMMUNICATION RF EN CHAMP PROCHE ET DISPOSITIFS À COMMUNICATIONS EN CHAMP PROCHE

Publication

EP 2021972 A1 (EN)

Application

EP 07732939 A

Priority

  • GB 2007001918 W
  • GB 0610227 A

Abstract (en)

[origin: WO2007135434A1] A near field RF communicator has an inductive coupler (10) to enable inductive coupling with a magnetic field of an RF signal. A demodulator (102) extracts modulation from an inductively coupled magnetic field. An error amplifier (206) controls a voltage of the near field RF communicator on the basis of a comparison of a reference voltage (VREF) with a voltage (VINPUT) related to a voltage derived by a power deriver (105). A modulator (M) is provided to modulate an inductively coupled magnetic field with data to be communicated via the inductive coupling. An error amplifier controller (102A; 101) is provided to prevent operation of the error amplifier in the event of a magnetic field amplitude below a predetermined level or the presence of modulation. The near field RF communicator may be a near field RF transponder or an NFC communicator in target mode.

IPC 8 full level (invention and additional information)

G06K 7/00 (2006.01); G06K 19/077 (2006.01); H04B 5/00 (2006.01)

CPC (invention and additional information)

G06K 19/0723 (2013.01); G06K 7/10237 (2013.01); G06K 19/0701 (2013.01); H04B 5/0068 (2013.01); H04B 5/02 (2013.01); H04B 5/0037 (2013.01); H04B 5/0081 (2013.01); Y02D 70/166 (2018.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

EPO simple patent family

WO 2007135434 A1 20071129; EP 2021972 A1 20090211; GB 0610227 D0 20060705

INPADOC legal status


2014-05-21 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20131203

2012-08-08 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) DELETED

2011-03-02 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20110201

2009-02-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20081121

2009-02-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

2009-02-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL BA HR MK RS