US Patent No: 7,711,115

Number of patents in Portfolio can not be more than 2000

Descrambler

ALSO PUBLISHED AS: 20040088558

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A descrambler adapted as an integrated circuit (IC) according to one embodiment. The descrambler comprises a control word ladder logic to produce, among other data, a control word to descramble incoming scrambled content. The descrambler further comprises copy protection key ladder logic to recover a copy protection key for encrypting descrambled content before subsequent transmission to a digital device.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SONY CORPORATIONTOKYO, JP39595
SONY ELECTRONICS INC.PARK RIDGE, NJ2933

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Candelore, Brant L Escondido, CA 304 3602

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SONY CORPORATION (32)
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4,710,811 Highly efficient coding apparatus for a digital video signal 102 1985
4,722,003 High efficiency coding apparatus 104 1986
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4,772,947 Method and apparatus for transmitting compression video data and decoding the same for reconstructing an image from the received data 112 1986
4,845,560 High efficiency coding apparatus 142 1988
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SONY ELECTRONICS INC. (32)
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7,010,685 Method and apparatus for storing scrambled digital programs by filtering product identifier 13 1999
6,697,489 Method and apparatus for securing control words 110 2000
7,146,007 Secure conditional access port interface 47 2000
7,124,303 Elementary stream partial encryption 117 2002
7,127,619 Decoding and decryption of partially encrypted information 76 2002
7,139,398 Time division partial encryption 80 2002
7,151,831 Partial encryption and PID mapping 62 2002
2002/0194,613 Reconstitution of program streams split across multiple program identifiers 73 2002
2003/0222,994 Method and apparatus for synchronizing dynamic graphics 46 2002
7,155,012 Slice mask and moat pattern partial encryption 61 2002
2003/0174,837 Content replacement by PID mapping 89 2002
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7,120,250 Content distribution for multiple digital rights management 97 2002
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2003/0174,844 Method and apparatus for protecting the transfer of data 86 2003
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2005/0066,357 Modifying content rating 48 2003
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2005/0169,473 Multiple selective encryption with DRM 82 2004
2005/0192,904 Selective encryption with coverage encryption 73 2005
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INTEL CORPORATION (23)
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6,021,201 Method and apparatus for integrated ciphering and hashing 108 1997
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6,069,647 Conditional access and content security method 138 1998
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GENERAL INSTRUMENT CORPORATION (13)
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CISCO TECHNOLOGY, INC. (11)
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2004/0003,008 Method for partially encrypting program data 61 2003
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2004/0111,613 Digital rights management system and method 44 2003
 
KABUSHIKI KAISHA TOSHIBA (10)
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5,999,698 Multiangle block reproduction system 349 1997
6,021,199 Motion picture data encrypting method and computer system and motion picture data encoding/decoding apparatus to which encrypting method is applied 100 1997
6,477,649 Information recording apparatus, information reproducing apparatus, and information distribution system 71 1998
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SCIENTIFIC-ATLANTA, INC. (9)
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7,065,213 In a subscriber network receiving digital packets and transmitting digital packets below a predetermined maximum bit rate 55 2001
 
MOTOROLA MOBILITY LLC (7)
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6,678,740 Process carried out by a gateway in a home network to receive video-on-demand and other requested programs and services 76 2000
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LG ELECTRONICS INC. (6)
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MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (6)
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5,258,835 Method of quantizing, coding and transmitting a digital video signal 98 1991
5,237,424 Digital video signal recording/reproducing apparatus 129 1991
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COMCAST IP HOLDINGS I, LLC (5)
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6,415,031 Selective and renewable encryption for secure distribution of video on-demand 189 2000
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INTERNATIONAL BUSINESS MACHINES CORPORATION (5)
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6,236,727 Apparatus, method and computer program product for protecting copyright data within a computer system 161 1997
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6,834,110 Multi-tier digital TV programming for content distribution 90 1999
2006/0136,976 Re-mapping and interleaving transport packets of multiple transport streams for processing by a single transport demultiplexor 47 2006
 
MICROSOFT CORPORATION (5)
5,999,622 Method and apparatus for protecting widely distributed digital information 153 1995
6,055,314 System and method for secure purchase and delivery of video content programs 519 1996
6,697,944 Digital content distribution, transmission and protection system and method, and portable device for use therewith 397 1999
6,772,340 Digital rights management system operating on computing device and having black box tied to computing device 261 2000
2004/0100,510 User interface for a resource search tool 77 2003
 
THOMSON LICENSING (5)
7,039,802 Conditional access system for set-top boxes 53 1998
6,418,169 System for prioritizing bi-directional broadcast data 89 1998
6,529,526 System for processing programs and program content rating information derived from multiple broadcast sources 139 1998
6,714,650 Recording of scrambled digital data 75 2000
2003/0159,152 Fast motion trick mode using dummy bidirectional predictive pictures 50 2002
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (4)
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HITACHI, LTD. (4)
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SAMSUNG ELECTRONICS CO., LTD. (4)
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THOMSON CONSUMER ELECTRONICS, INC. (4)
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DAEWOO ELECTRONICS CO., LTD. (2)
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Other [Check patent profile for assignment information] (6)
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Patent Info (Count) # Cites Year
 
SONY ELECTRONICS INC. (1)
8,204,220 Simulcrypt key sharing with hashed keys 1 2008

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