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

ALSO PUBLISHED AS: 20070271469

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Abstract

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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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Patent Owner(s)

Patent OwnerAddressTotal Patents
LG ELECTRONICS INC.SEOUL, KR15340

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kim, Byung Jin Kyunggi-do, KR 532 1833
Kim, Hyung Sun Seoul, KR 127 251
Stechkine, Alexandre Seoul, KR 7 23
Um, Soung Hyun Kyunggi-do, KR 173 760

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SONY CORPORATION (7)
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6,728,379 Information processor and information processing method 35 1999
6,711,276 Control method and apparatus for embedding information in data 26 1999
6,834,346 Content processing system 26 2000
6,802,011 COPYRIGHT PROTECTION INFORMATION PROTECTING METHOD, INFORMATION SIGNAL PROCESSING METHOD, INFORMATION SIGNAL REPRODUCING METHOD, INFORMATION SIGNAL RECORDING METHOD, AND INFORMATION SIGNAL PROCESSING DEVICE, INFORMATION SIGNAL REPRODUCING DEVICE, AND INFORMATION SIGNAL RECORDING DEVICE 13 2000
2003/0046,238 Data processing apparatus, data processing system, and data processing method therefor 130 2000
2002/0010,861 Access control system, access control method, device, access control server, access-control-server registration server, data processing apparatus, and program storage medium 20 2001
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (5)
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6,611,599 Watermarking of digital object 108 1997
6,550,011 Media content protection utilizing public key cryptography 307 1999
7,002,710 High reliability forensic color marking system 20 2000
2002/0071,566 Computer system employing a split-secret cryptographic key linked to a password-based cryptographic key security scheme 43 2000
 
DIGIMARC CORPORATION (4)
6,611,607 Integrating digital watermarks in multimedia content 243 2000
2003/0048,922 Imagery having technical exposure data steganographically encoded therein 10 2001
2005/0058,318 Embedding information in a digital image digitized from a developed photographic film 102 2001
2005/0196,013 Imagery having technical exposure data steganographically encoded therein 9 2005
 
INTARSIA SOFTWARE LLC (3)
6,002,772 Data management system 170 1997
6,182,218 Digital content management system using electronic watermark 100 1997
6,741,991 Data management system 42 2001
 
INTEL CORPORATION (3)
5,809,139 Watermarking method and apparatus for compressed digital video 400 1996
7,047,554 System and method for integrating and controlling audio/video devices 53 1998
6,880,083 Method and apparatus for creating and executing secure scripts 19 1999
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (3)
5,673,316 Creation and distribution of cryptographic envelope 492 1996
6,711,679 Public key infrastructure delegation 120 1999
6,834,110 Multi-tier digital TV programming for content distribution 99 1999
 
LEVEL 3 COMMUNICATIONS, LLC (3)
6,226,618 Electronic content delivery system 1091 1998
6,398,245 Key management system for digital content player 222 1998
6,418,421 Multimedia player for an electronic content delivery system 362 1998
 
LG ELECTRONICS INC. (3)
2002/0118,838 Copy protection method and system for digital media 18 2002
7,043,051 Proprietary watermark system for secure digital media and content distribution 5 2002
* 7,254,838 Copy protection method and system for digital media 6 2002
 
MICROSOFT CORPORATION (3)
6,385,596 Secure online music distribution system 709 1998
6,891,958 Asymmetric spread-spectrum watermarking systems and methods of use 36 2001
7,568,096 Rendering digital content in a content protection system according to a plurality of chained digital licenses 15 2004
 
NEC CORPORATION (3)
5,848,155 Spread spectrum watermark for embedded signalling 322 1996
5,930,369 Secure spread spectrum watermarking for multimedia data 494 1997
6,154,571 Robust digital watermarking 192 1998
 
SUN MICROSYSTEMS, INC. (3)
* 6,775,382 Method and apparatus for recovering encryption session keys 23 1997
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* 6,549,626 Method and apparatus for encoding keys 27 1997
 
THOMSON LICENSING (3)
6,256,347 Pixel block compression apparatus in an image processing system 43 1997
6,141,753 Secure distribution of digital representations 215 1998
7,630,511 Apparatus and methods for improving detection of watermarks in content that has undergone a lossy transformation 7 2004
 
CANON KABUSHIKI KAISHA (2)
6,269,446 Authenticating images from digital cameras 61 1998
6,678,464 Preventing copying of digital information 17 1998
 
HITACHI, LTD. (2)
6,584,210 Digital watermark image processing method 10 1999
6,418,232 Method of authenticating digital-watermark pictures 75 1999
 
KONINKLIJKE PHILIPS ELECTRONICS N.V. (2)
7,000,113 Recording information with a watermark related to a prerecorded medium mark on an information carrier 22 1998
6,577,745 Watermark detection 8 1999
 
Pioneer Electronic Corporation (2)
6,633,723 Recording and reproducing system, recording apparatus and reproducing apparatus having copy protection function 24 1999
6,707,774 Recording and reproducing system, recording apparatus and reproducing apparatus having copy protection function 47 1999
 
XEROX CORPORATION (2)
5,949,055 Automatic geometric image transformations using embedded signals 227 1997
2006/0242,418 Method for ensuring the integrity of image sets 7 2005
 
AUTONOMY, INC. (1)
* 5,940,507 Secure file archive through encryption key management 149 1998
 
CERTCO, INC. (1)
5,995,625 Electronic cryptographic packing 140 1997
 
CISCO TECHNOLOGY, INC. (1)
6,246,767 Source authentication of download information in a conditional access system 81 2000
 
CLWT, LLC (1)
7,062,045 Media protection system and method 20 2001
 
CONSTELLATION TECHNOLOGIES LLC (1)
2003/0009,591 Apparatus and method for managing internet resource requests 34 2001
 
COPILOT VENTURES FUND III LLC (1)
5,974,150 System and method for authentication of goods 202 1998
 
DIGITAL DELIVERY NETWORKS, INC. (1)
2001/0010,046 Client content management and distribution system 161 2001
 
EASTMAN KODAK COMPANY (1)
7,203,335 System and method for extracting a watermark signal in a digital image sequence 8 2001
 
Entrust Technologies Limited (1)
6,229,894 Method and apparatus for access to user-specific encryption information 128 1997
 
INFINEON TECHNOLOGIES AG (1)
6,397,333 Copy protection system and method 64 1998
 
Institut Eurecom (1)
6,643,383 Method for hiding binary data in a digital image 5 1999
 
INTELLECTUAL VENTURES FUND 83 LLC (1)
5,568,570 Method and apparatus for reducing quantization artifacts in a hierarchical image storage and retrieval system 243 1994
 
KENT RIDGE DIGITAL LABS (1)
6,678,389 Method and apparatus for embedding digital information in digital multimedia data 84 1999
 
KOREA TELECOM (1)
6,853,676 Apparatus and method for inserting and detecting watermark based on stochastic model 11 2000
 
LIOUID AUDIO, INC. (1)
6,367,019 Copy security for portable music players 177 1999
 
LOS ALAMOS NATIONAL SECURITY, LLC (1)
6,021,196 Reference palette embedding 38 1998
 
LUCENT TECHNOLOGIES INC. (1)
6,687,822 Method and system for providing translation certificates 66 1999
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
6,240,121 Apparatus and method for watermark data insertion and apparatus and method for watermark data detection 144 1998
 
MEDIASEC TECHNOLOGIES LLC (1)
6,243,480 Digital authentication with analog documents 312 1998
 
MESSAGE SECURE CORPORATION (1)
2002/0048,372 Universal signature object for digital data 12 2001
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
2007/0014,354 Image coding apparatus with segment classification and segmentation-type motion prediction circuit 11 2006
 
MYPORT IP, INC. (1)
6,996,251 Forensic communication apparatus and method 42 2003
 
NEC PERSONAL COMPUTERS, LTD. (1)
6,259,801 Method for inserting and detecting electronic watermark data into a digital image and a device for the same 64 1999
 
NOKIA CORPORATION (1)
7,224,805 Consumption of content 20 2001
 
PERIMETER LABS, INC. (1)
6,044,462 Method and apparatus for managing key revocation 120 1997
 
PLAYMEDIA SYSTEMS, INC. (1)
2001/0032,312 System and method for secure electronic digital rights management, secure transaction management and content distribution 154 2000
 
PRINCETON UNIVERSITY (1)
6,285,775 Watermarking scheme for image authentication 194 1998
 
QUALCOMM INCORPORATED (1)
2004/0120,527 Method and apparatus for security in a data processing system 19 2004
 
RPX CORPORATION (1)
6,005,643 Data hiding and extraction methods 57 1997
 
SAMSUNG ELECTRONICS CO., LTD. (1)
2005/0169,498 Apparatus and method for watermarking digital image 9 2005
 
SONY UNITED KINGDOM LIMITED (1)
2005/0025,316 Access control for digital content 8 2004
 
SPACE MICRO INC. (1)
7,100,048 Encrypted internet and intranet communication device 32 2000
 
TEXAS INSTRUMENTS INCORPORATED (1)
6,272,253 Content-based video compression 51 1996
 
The Boeing Company (1)
2003/0202,659 Visible watermark to protect media content from server to projector 6 2003
 
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (1)
5,659,726 Data embedding 336 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)
5,499,294 Digital camera with apparatus for authentication of images produced from an image file 448 1995
 
The United States of America as represented by the Secretary of the Air Force (1)
6,101,602 Digital watermarking by adding random, smooth patterns 120 1997
 
UNIVERSITY OF NORTH TEXAS (1)
2009/0132,825 APPARATUS AND METHOD FOR TRANSMITTING SECURE AND/OR COPYRIGHTED DIGITAL VIDEO BROADCASTING DATA OVER INTERNET PROTOCOL NETWORK 10 2008
 
VERIZON LABORATORIES INC. (1)
6,665,420 Message authentication code with improved error tolerance 7 2000
 
WISTARIA TRADING, INC. (1)
6,310,956 Copy protection apparatus and method 78 1999
 
WISTRON CORPORATION (1)
6,389,403 Method and apparatus for uniquely identifying a customer purchase in an electronic distribution system 173 1999
 
Other [Check patent profile for assignment information] (5)
5,568,750 Lid Lifter 6 1995
6,148,342 Secure database management system for confidential records using separately encrypted identifier and access request 131 1999
2004/0034,781 Watermarking of digital object 9 2003
2005/0036,651 Digital anti&minus forging method 10 2004
2006/0204,032 Digital watermark embedding method, digital watermark embedding apparatus, and storage medium storing a digital watermark embedding program 13 2006
* Cited By Examiner

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