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1.发明授权
公开(公告)号：EP1810442B1
公开(公告)日：2012-05-02
申请号：EP05808377.5
申请日：2005-11-11
发明人： KULESSA, Ralph , PICKEL, Jörg , KRÄGELOH, Stefan , AICHROTH, Patrick , SIEBENHAAR, Frank , NEUBAUER, Christian , SPINNLER, Wolfgang
IPC分类号： H04L9/32
CPC分类号： H04L9/3236 , H04L2209/04 , H04L2209/38 , H04L2209/608 , H04L2209/805
摘要： The invention relates to a device for the detection of a manipulation of an information signal, comprising a device (101), for the extraction of an information signal component, characteristic of the information signal, from the information signal, a device (103), for encryption of the information signal component to give an encrypted signal and a device (105), for comparison of the encrypted signal with a reference signal, whereby the reference signal is an encrypted representation of a non-manipulated reference signal component of a reference information signal, in order to detect the manipulation.
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2.发明公开
公开(公告)号：EP1810442A1
公开(公告)日：2007-07-25
申请号：EP05808377.5
申请日：2005-11-11
发明人： KULESSA, Ralph , PICKEL, Jörg , KRÄGELOH, Stefan , AICHROTH, Patrick , SIEBENHAAR, Frank , NEUBAUER, Christian , SPINNLER, Wolfgang
IPC分类号： H04L9/32
CPC分类号： H04L9/3236 , H04L2209/04 , H04L2209/38 , H04L2209/608 , H04L2209/805
摘要： The invention relates to a device for the detection of a manipulation of an information signal, comprising a device (101), for the extraction of an information signal component, characteristic of the information signal, from the information signal, a device (103), for encryption of the information signal component to give an encrypted signal and a device (105), for comparison of the encrypted signal with a reference signal, whereby the reference signal is an encrypted representation of a non-manipulated reference signal component of a reference information signal, in order to detect the manipulation.
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公开(公告)号：EP2438707B1
公开(公告)日：2013-04-03
申请号：EP10730461.0
申请日：2010-07-07
CPC分类号： H04L9/3213 , H04L9/006 , H04L9/3218 , H04L63/0407 , H04L63/0807 , H04L2209/42 , H04L2209/50 , H04L2209/56 , H04L2209/603
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公开(公告)号：EP1817711A1
公开(公告)日：2007-08-15
申请号：EP05787389.5
申请日：2005-09-12
发明人： KRAEGELOH, Stefan , PICKEL, Joerg , KULESSA, Ralph , AICHROTH, Patrick , KRAUSS, Kurt Michael , HASSELBACH, Jens , PUCHTA, Stefan , GAYER, Marc , POPP, Harald
IPC分类号： G06F21/00
CPC分类号： G06F21/64 , H04L9/0643 , Y04S40/24
摘要： The invention relates to a device for testing a dataset (112), said data set (112) having a plurality of subsets and one partial test value (114) per subset. The inventive device comprises a facility (102) for establishing a test value and a comparative facility (103). The facility (102) for establishing a test value is adapted to establish, based on the partial test values (114) of the subsets, a common test value (116). The comparative facility (103) is adapted to compare the common test value (116) with a comparative value (118) provided to the comparative facility (103).
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5.发明公开
公开(公告)号：EP3570186A1
公开(公告)日：2019-11-20
申请号：EP18192315.2
申请日：2018-09-03
IPC分类号： G06F16/683 , G06F16/41
摘要： Device for detecting partial matches between a first time varying signal and a second time varying signal, in particular between a first audio signal and a second audio signal or between a first video signal and a second video signal, the device comprising:
a fingerprint extraction stage configured for extracting a first fingerprint from the first time varying signal and for extracting a second fingerprint from the second time varying signal; and
a matching stage configured for comparing the first fingerprint and the second fingerprint, wherein each feature information of the first fingerprint is pairwise compared with each feature information of the second fingerprint;
wherein the matching stage comprises a similarity calculator stage configured for calculating for each pair of one of feature informations of the first fingerprint and of one of the feature informations of the second fingerprint a similarity value;
wherein the matching stage comprises a matrix calculator stage configured for arranging the similarity values in a similarity matrix having dimensions of L a X L b , wherein an entry in the i-th row and j-th column of the similarity matrix is the similarity value calculated from the pair of the i-th feature information of the first fingerprint and of the j-th feature information of the second fingerprint;
wherein the matching stage comprises a detection stage configured for detecting the partial matches by evaluating a plurality of diagonals of the similarity matrix.-
公开(公告)号：EP1652053B1
公开(公告)日：2008-04-16
申请号：EP05701108.2
申请日：2005-01-21
CPC分类号： G06Q30/06 , G06Q30/0214 , G06Q30/0601
摘要： The invention relates to a method for supplying a virtual product to a third party, said product being in a digital form in an original version (300) and having a pre-determined level of quality. According to said method, a reduced version (308) of the virtual product together with information (310) relating to a distributor of the virtual product is provided. The quality of said reduced version (308) is lower than the quality of the original version (300), and the information relating to the distributor is associated with said reduced version. Other information can be produced on the basis of the information (310) associated with the reduced version (308). Said other information indicates that the reduced version has been distributed to the third parties by the distributor. The other information is produced if the third party has obtained rights on the reduced version after receiving the same.
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