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Inventor

THORWIRTH NIELS

US12 patents
⚠️ This page may combine multiple inventors who share the name “THORWIRTH NIELS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

VERIMATRIX INC

5 patents
US7430302B2Sep 30, 2008

Covert and robust mark for media identification

VERIMATRIX INC24 citations91
US9847979B2Dec 19, 2017

Security and key management of digital content

VERIMATRIX INC15 citations77
US9271016B2Feb 23, 2016

Reformatting media streams to include auxiliary data

VERIMATRIX INC3 citations62
US7853040B2Dec 14, 2010

Covert and robust mark for media identification

VERIMATRIX INC4 citations61
US7738677B2Jun 15, 2010

Efficient application of video marking technologies

VERIMATRIX INC3 citations61

SCHREINER GROUP GMBH & CO KG

2 patents
US7809152B2Oct 5, 2010

Visible authentication patterns for printed document

SCHREINER GROUP GMBH & CO KG24 citations92
US7991198B2Aug 2, 2011

Visible authentication patterns for printed document

SCHREINER GROUP GMBH & CO KG12 citations83

THOMSON LICENSING

2 patents
US7630511B2Dec 8, 2009

Apparatus and methods for improving detection of watermarks in content that has undergone a lossy transformation

THOMSON LICENSING21 citations92
US7555650B1Jun 30, 2009

Techniques for reducing the computational cost of embedding information in digital representations

THOMSON LICENSING21 citations92

MEDIASEC TECHNOLOGIES GMBH

1 patent
US6782116B1Aug 24, 2004

Apparatus and methods for improving detection of watermarks in content that has undergone a lossy transformation

MEDIASEC TECHNOLOGIES GMBH123 citations97

ZHAO JIAN

1 patent
US8189862B2May 29, 2012

Visible authentication patterns for printed document

ZHAO JIAN10 citations83

PETERKA PETR

1 patent
US9253165B2Feb 2, 2016

Digital rights domain management for secure content distribution in a local network

PETERKA PETR2 citations61