US Patent No: 7,877,813

Number of patents in Portfolio can not be more than 2000

Copy protection method and system for digital media

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ALSO PUBLISHED AS: 20070271469
ATTORNEY / AGENT: (SPONSORED)
 

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Abstract

A copy protection method and a copy protection system are disclosed. The system includes a private key verifier receiving a media certificate that includes a private key identification of a compliant playing device and searching for an actual private key corresponding to the private key identification, an intermediate key decryptor receiving an encrypted intermediate key and decrypting the intermediate key with the actual private key, a media key decryptor obtaining an original media key by decrypting the decrypted intermediate key with a media identification; and a media data decryptor receiving an encrypted media data set and decrypting the media data set with the original media key. The method and system of the present invention are applicable to all types of digital media data, and it makes no assumption of any specific media properties. The primary goal of the present invention is to significantly reduce the possibility of making any illegal copies on any nonstandard equipment and is to restrict the media data transfers only to authorized entities.

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
LG ELECTRONICS INC.SEOUL, KR12939

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kim, Byung Jin Kyunggi-do, KR 466 1401
Kim, Hyung Sun Seoul, KR 95 175
Stechkine, Alexandre Seoul, KR 6 17
Um, Soung Hyun Kyunggi-do, KR 153 623

Cited Art

Patent Info (Count) # Cites Year
 
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HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (5)
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DIGIMARC CORPORATION (4)
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INTARSIA SOFTWARE LLC (3)
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6,741,991 Data management system 36 2001
 
INTEL CORPORATION (3)
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INTERNATIONAL BUSINESS MACHINES CORPORATION (3)
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LEVEL 3 COMMUNICATIONS, LLC (3)
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LG ELECTRONICS INC. (3)
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MICROSOFT CORPORATION (3)
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6,891,958 Asymmetric spread-spectrum watermarking systems and methods of use 18 2001
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NEC CORPORATION (3)
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SUN MICROSYSTEMS, INC. (3)
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KONINKLIJKE PHILIPS ELECTRONICS N.V. (2)
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PIONEER ELECTRONIC CORPORATION (2)
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XEROX CORPORATION (2)
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CLWT, LLC (1)
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DIGITAL DELIVERY NETWORKS, INC. (1)
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EASTMAN KODAK COMPANY (1)
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ENTRUST TECHNOLOGIES LIMITED (1)
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INFINEON TECHNOLOGIES AG (1)
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Institut Eurecom (1)
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INTELLECTUAL VENTURES FUND 83 LLC (1)
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KENT RIDGE DIGITAL LABS (1)
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KOREA TELECOM (1)
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LIOUID AUDIO, INC. (1)
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LOS ALAMOS NATIONAL SECURITY, LLC (1)
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MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
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MESSAGE SECURE CORPORATION (1)
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2007/0014,354 Image coding apparatus with segment classification and segmentation-type motion prediction circuit 5 2006
 
MYPORT IP, INC. (1)
6,996,251 Forensic communication apparatus and method 16 2003
 
NEC PERSONAL COMPUTERS, LTD. (1)
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NOKIA CORPORATION (1)
7,224,805 Consumption of content 15 2001
 
PERIMETER LABS, INC. (1)
6,044,462 Method and apparatus for managing key revocation 107 1997
 
PLAYMEDIA SYSTEMS, INC. (1)
2001/0032,312 System and method for secure electronic digital rights management, secure transaction management and content distribution 128 2000
 
PRINCETON UNIVERSITY (1)
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QUALCOMM INCORPORATED (1)
2004/0120,527 Method and apparatus for security in a data processing system 14 2004
 
ROCKSTAR BIDCO, LP (1)
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RPX CORPORATION (1)
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SAMSUNG ELECTRONICS CO., LTD. (1)
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SCIENTIFIC-ATLANTA, INC. (1)
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TEXAS INSTRUMENTS INCORPORATED (1)
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THE BOEING COMPANY (1)
2003/0202,659 Visible watermark to protect media content from server to projector 3 2003
 
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (1)
5,659,726 Data embedding 306 1995
 
THE STANDARD REGISTER COMPANY (1)
6,358,596 Multi-functional transparent secure marks 13 1999
 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION (1)
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THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE (1)
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TRACER DETECTION TECHNOLOGY CORP. (1)
5,974,150 System and method for authentication of goods 174 1998
 
UNIVERSITY OF NORTH TEXAS (1)
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VERIZON LABORATORIES INC. (1)
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WISTARIA TRADING, INC. (1)
6,310,956 Copy protection apparatus and method 72 1999
 
WISTRON CORPORATION (1)
6,389,403 Method and apparatus for uniquely identifying a customer purchase in an electronic distribution system 138 1999
 
Other [Check patent profile for assignment information] (5)
5,568,750 Lid Lifter 5 1995
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2004/0034,781 Watermarking of digital object 8 2003
2005/0036,651 Digital anti&minus forging method 5 2004
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