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21. 发明专利

DE102004019311B3 未知
公开(公告)号：DE102004019311B3
公开(公告)日：2005-11-10
申请号：DE102004019311
申请日：2004-04-14
申请人： ATMEL GERMANY GMBH
发明人： FRIEDRICH ULRICH
IPC分类号： G01S13/75 , G06K7/10 , G08C17/02 , H04B1/59 , H04B1/713 , H04B3/46 , H04L27/02
摘要： A method and apparatus for wireless data transmission between a base station and one or more, in particular, passive and/or backscatter-based transponders, in which the base station modulates a carrier signal with a modulation signal, to generate synchronization markers, and transmits the modulated carrier signal. Whereby, a frequency of the modulated carrier signal can be switched between different frequency values.

22. 发明专利

DE102004019309A1 未知
公开(公告)号：DE102004019309A1
公开(公告)日：2005-11-03
申请号：DE102004019309
申请日：2004-04-14
申请人： ATMEL GERMANY GMBH
发明人： FRIEDRICH ULRICH
IPC分类号： G06K7/00 , G06K19/07 , G08C17/02 , H03M13/09 , H04L12/56

23. 发明专利

DE102004013837A1 未知
公开(公告)号：DE102004013837A1
公开(公告)日：2005-10-06
申请号：DE102004013837
申请日：2004-03-16
申请人： ATMEL GERMANY GMBH
发明人： FRIEDRICH ULRICH
IPC分类号： G01S1/68 , G06F7/04 , G06K7/00 , G08C17/02 , H03M7/30 , H03M13/00 , H03M13/09 , H04L1/00 , H04L27/00
摘要： A method for wireless data transmission between a base station and one or more, in particular passive, transponders is provided, in which electromagnetic carrier waves are emitted by the base station. Data comprising successive characters are transmitted from a respective transponder to the base station by modulation and backscattering of the electromagnetic carrier waves, and a respective one of the characters is coded and transmitted by a respective transponder within a predefined time interval. Within at least one of the predefined time intervals, a safeguard character formed from the data to be transmitted is transmitted in addition to the character to be transmitted.

24. 发明专利

DE10356259A1 未知
公开(公告)号：DE10356259A1
公开(公告)日：2005-07-14
申请号：DE10356259
申请日：2003-12-03
申请人： ATMEL GERMANY GMBH
发明人： FRIEDRICH ULRICH , ZIEBERTZ DIRK , FISCHER MARTIN , FLASSNOECKER VOLKHARD
IPC分类号： G06K19/07 , G06K19/073 , H04B1/59 , H02J17/00
摘要： A transponder receives its operating energy from an external source such as a radio signal or a battery. Such transponders are used for example in a vehicle or in a remote sensor. The response range of the transponder is increased by converting the received energy into an operating voltage which in turn is used to generate a function voltage required for performing a current function sequence. The generated function voltage is checked to determine at least one characteristic of the generated function voltage. The determined function voltage characteristic, for example a voltage value directly representing the function voltage, is then used to acknowledge or reject a result of performing the function sequence. Thus, the time duration for performing any current function sequence is flexibly adapted to the current requirements of that function sequence, whereby the power consumption of the transponder is optimally reduced and the response range respectively increased.

25. 发明专利

DE10204347A1 未知
公开(公告)号：DE10204347A1
公开(公告)日：2003-08-14
申请号：DE10204347
申请日：2002-02-01
申请人： ATMEL GERMANY GMBH
发明人： FRIEDRICH ULRICH
IPC分类号： E05B49/04 , G06K7/00 , H04L25/49 , H04L27/00 , H04L12/56 , E05B65/36 , E05B47/00
摘要： In known methods for the transmission of data, errors in the data transmission reduce the effective data rate as the entire data word must be respectively retransmitted if an error occurs. The inventive method enables errors to be corrected during the transmission of the data word by changing the modulation state at pre-defined moments, thus increasing the effective data rate.

26. 发明专利

ES2157089T3 未知
公开(公告)号：ES2157089T3
公开(公告)日：2001-08-01
申请号：ES97944877
申请日：1997-09-13
申请人： ATMEL GERMANY GMBH
发明人： BRUHNKE MICHAEL , BLATZ WERNER , FRIEDRICH ULRICH , GROSSKINSKY ULRICH
IPC分类号： E05B49/00 , B60R25/04 , B60R25/10 , G01S13/75 , G01S13/76 , G01S13/79 , G06K7/00 , G06K19/07 , G07F7/10 , G11C7/10 , G11C11/419 , H04B1/59 , H04B5/02 , H04L1/12 , H04L9/32
摘要： The method of cryptological authentification in a scanning identification system comprising a base station, which supplies energy via the alternating field to a transponder connected to the object to be identified, includes the following method steps. For essentially the entire communication between the base station and the transponder, the base station generates an inquiry signal. Upon receiving the inquiry signal transmitted by the base station, the transponder responds with an identification number stored in its memory. The base station then encodes a first bit sequence it has generated by using a key bit sequence that is allocated to the identification number of the transponder, and transmits the second bit sequence obtained in this manner to the transponder. When the second bit sequence is received, the transponder generates a checking bit sequence from the second bit sequence, and, following the complete reception of the second bit sequence, transmits this checking bit sequence to the base station. The checking bit sequence serves to verify the correct reception of the second bit sequence. For cryptographic authentification, the transponder encodes the first bit sequence reconstructed from the second bit sequence using the key bit sequence allocated to the transponder, and transmits the third bit sequence obtained in this manner to the base station. While the transponder is still encoding the second bit sequence to form the third bit sequence, the base station uses the checking bit sequence to verify whether an error has occurred in the transmission of the second bit sequence, and may abort the ongoing encoding in the transponder. This can abort the ongoing authentification, because a valid result cannot be anticipated. Thus, time is gained at the start of a new running of the authentification method.

27. 发明专利

DE59703244D1 未知
公开(公告)号：DE59703244D1
公开(公告)日：2001-05-03
申请号：DE59703244
申请日：1997-09-13
申请人： ATMEL GERMANY GMBH
发明人： BRUHNKE MICHAEL , BLATZ WERNER , FRIEDRICH ULRICH , GROSSKINSKY ULRICH
IPC分类号： E05B49/00 , B60R25/04 , B60R25/10 , G01S13/75 , G01S13/76 , G01S13/79 , G06K7/00 , G06K19/07 , G07F7/10 , G11C7/10 , G11C11/419 , H04B1/59 , H04B5/02 , H04L1/12 , H04L9/32
摘要： The method of cryptological authentification in a scanning identification system comprising a base station, which supplies energy via the alternating field to a transponder connected to the object to be identified, includes the following method steps. For essentially the entire communication between the base station and the transponder, the base station generates an inquiry signal. Upon receiving the inquiry signal transmitted by the base station, the transponder responds with an identification number stored in its memory. The base station then encodes a first bit sequence it has generated by using a key bit sequence that is allocated to the identification number of the transponder, and transmits the second bit sequence obtained in this manner to the transponder. When the second bit sequence is received, the transponder generates a checking bit sequence from the second bit sequence, and, following the complete reception of the second bit sequence, transmits this checking bit sequence to the base station. The checking bit sequence serves to verify the correct reception of the second bit sequence. For cryptographic authentification, the transponder encodes the first bit sequence reconstructed from the second bit sequence using the key bit sequence allocated to the transponder, and transmits the third bit sequence obtained in this manner to the base station. While the transponder is still encoding the second bit sequence to form the third bit sequence, the base station uses the checking bit sequence to verify whether an error has occurred in the transmission of the second bit sequence, and may abort the ongoing encoding in the transponder. This can abort the ongoing authentification, because a valid result cannot be anticipated. Thus, time is gained at the start of a new running of the authentification method.

28. 发明专利

DE502005006850D1 未知
公开(公告)号：DE502005006850D1
公开(公告)日：2009-04-23
申请号：DE502005006850
申请日：2005-12-09
申请人： ATMEL GERMANY GMBH
发明人： FISCHER MARTIN , FRIEDRICH ULRICH , MASUCH JENS , PANGELS MICHAEL , ZIEBERTZ DIRK
IPC分类号： G06K19/07 , G06K7/00

29. 发明专利

DE102007025780A1 未知
公开(公告)号：DE102007025780A1
公开(公告)日：2008-11-27
申请号：DE102007025780
申请日：2007-05-22
申请人： ATMEL GERMANY GMBH
发明人： FRIEDRICH ULRICH , MASUCH JENS , FISCHER MARTIN , PANGELS MICHAEL , ZIEBERTZ DIRK , KUETER KIM
IPC分类号： G06F7/58 , H03K3/84

30. 发明专利

DE502007000044D1 未知
公开(公告)号：DE502007000044D1
公开(公告)日：2008-08-28
申请号：DE502007000044
申请日：2007-01-11
申请人： ATMEL GERMANY GMBH
发明人： FRIEDRICH ULRICH
IPC分类号： G06K19/073 , G06K7/00 , G07F7/10

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