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Patent Searching and Data


Title:
TRANSPONDER UNIT
Document Type and Number:
WIPO Patent Application WO/2010/046128
Kind Code:
A3
Abstract:
The invention relates to a transponder unit (1, 2, 101) for transmitting data to a reading device by modulation of an electromagnetic field. Said transponder unit comprises a device for varying the data block size of the data by restricting the same or by modifying a clock signal depending on a frequency difference between a clock frequency of a clock signal (151, 152, 153, 154, 155) transmitted to the transponder unit (1, 2, 101) from the reading device and a frequency generator frequency of a frequency generator (43, 45) of the transponder unit (1, 2, 101).

Inventors:
FINKENZELLER KLAUS (DE)
SCHMIDTKE RAINER (DE)
Application Number:
PCT/EP2009/007613
Publication Date:
July 22, 2010
Filing Date:
October 23, 2009
Export Citation:
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Assignee:
GIESECKE & DEVRIENT GMBH (DE)
FINKENZELLER KLAUS (DE)
SCHMIDTKE RAINER (DE)
International Classes:
G06K19/07; G06K19/077
Foreign References:
DE102004031092A12006-01-12
US6294980B12001-09-25
US6879809B12005-04-12
US20080068135A12008-03-20
EP1801738A12007-06-27
Attorney, Agent or Firm:
KSNH Patentanwälte Klunker.Schmitt-Nilson.Hirsch (München, DE)
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