公开(公告)号：EP1960947B1

公开(公告)日：2010-09-08

申请号：EP06832046.4

申请日：2006-12-01

申请人： NXP B.V.

发明人： RIEMSCHNEIDER, Karl-Ragmar ,  ROEHM, Horst ,  TOBERGTE, Wolfgang

IPC分类号： G06K19/07

CPC分类号： G06K7/10178 ,  G06K19/0726 ,  G06K19/07749 ,  G06K19/07767

摘要： A circuit arrangement (100) for a transponder comprises a control circuit (103) and an input circuit, wherein the input circuit comprises a first resonator (101), which comprises a first coil (104) and a first capacitor (105), and a second resonator (102), which comprises a second coil (108) and a second capacitor (109). The first capacitor and the second capacitor are designed as a first varactor and as a second varactor, respectively. Furthermore, the first resonator and the second resonator are designed in such a way that they can be used to provide a first output voltage and a second output voltage, respectively. Moreover, the control circuit (103) is designed in such a way that it can be used to control at least one of the varactors (105,109) so that a resonant frequency of the corresponding resonator can essentially be set to a predefined transmission frequency such that the output voltage of the corresponding resonator of the input circuit can be increased.

公开(公告)号：EP1886260B1

公开(公告)日：2010-07-28

申请号：EP06765690.0

申请日：2006-05-19

申请人： NXP B.V.

发明人： GRAEBER, Frank ,  TOBERGTE, Wolfgang

IPC分类号： G06K17/00

CPC分类号： G06K17/00 ,  G06K7/0008 ,  G06K2017/0067

公开(公告)号：EP2005291B1

公开(公告)日：2010-06-23

申请号：EP07705885.7

申请日：2007-02-15

申请人： NXP B.V.

发明人： TOBERGTE, Wolfgang

IPC分类号： G06F7/72 ,  H04L9/30

CPC分类号： G06F7/723 ,  G06F7/725 ,  G06F2207/7261 ,  G06F2207/7271 ,  H04L9/004 ,  H04L9/005 ,  H04L9/302

公开(公告)号：EP2005291A2

公开(公告)日：2008-12-24

申请号：EP07705885.7

申请日：2007-02-15

申请人： NXP B.V.

发明人： TOBERGTE, Wolfgang

IPC分类号： G06F7/72 ,  H04L9/30

CPC分类号： G06F7/723 ,  G06F7/725 ,  G06F2207/7261 ,  G06F2207/7271 ,  H04L9/004 ,  H04L9/005 ,  H04L9/302

摘要： The invention relates to a method of determining a plaintext M on the basis of a cipher C and using a secret key d, wherein the secret key d is used in binary form, wherein the plaintext M is determined in each iteration step i for the corresponding bit di and a security variable Mn is determined in parallel therewith, and then a verification variable x is determined by means of a bit-compatible exponent of the secret key d.

公开(公告)号：EP1960947A2

公开(公告)日：2008-08-27

申请号：EP06832046.4

申请日：2006-12-01

申请人： NXP B.V.

发明人： RIEMSCHNEIDER, Karl-Ragmar ,  ROEHM, Horst ,  TOBERGTE, Wolfgang

IPC分类号： G06K19/07

CPC分类号： G06K7/10178 ,  G06K19/0726 ,  G06K19/07749 ,  G06K19/07767

摘要： A circuit arrangement (100) for a transponder comprises a control circuit (103) and an input circuit, wherein the input circuit comprises a first resonator (101), which comprises a first coil (104) and a first capacitor (105), and a second resonator (102), which comprises a second coil (108) and a second capacitor (109). The first capacitor and the second capacitor are designed as a first varactor and as a second varactor, respectively. Furthermore, the first resonator and the second resonator are designed in such a way that they can be used to provide a first output voltage and a second output voltage, respectively. Moreover, the control circuit (103) is designed in such a way that it can be used to control at least one of the varactors (105,109) so that a resonant frequency of the corresponding resonator can essentially be set to a predefined transmission frequency such that the output voltage of the corresponding resonator of the input circuit can be increased.