Descrambler

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7711115
APP PUB NO 20040088558A1
SERIAL NO

10690192

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ATTORNEY / AGENT: (SPONSORED)

Importance

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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, JP27497
SONY ELECTRONICS INC.PARK RIDGE, NJ1857

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Candelore, Brant L Escondido, US 205 5770

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (7)
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4788589 Method and apparatus for transmitting video data 94 1986
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4845560 High efficiency coding apparatus 143 1988
4890161 Decoding apparatus 112 1989
4953023 Coding apparatus for encoding and compressing video data 98 1989
5142537 Video signal processing circuit 126 1990
5023710 Highly efficient coding apparatus 174 1990
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5416651 Apparatus for magnetically recording digital data 97 1991
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COMCAST IP HOLDINGS I, LLC (4)
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2005/0144,646 Method and apparatus for a receiver/decoder 28 2005
 
HITACHI AMERICA, LTD. (1)
5805762 Video recording device compatible transmitter 168 1994
 
NEC ELECTRONICS CORPORATION (1)
2002/0047,915 Segmented processing method for a transport stream for digital television and recording media for the same 48 2001
 
AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (4)
5790842 Processing system with simultaneous utilization of multiple clock signals 104 1996
6072873 Digital video broadcasting 105 1998
6351538 Conditional access and copy protection scheme for MPEG encoded video data 96 1998
6707696 Hacker-proof one time programmable memory 47 2003
 
GENERAL INSTRUMENT CORPORATION (GIC-4) (6)
4739510 Direct broadcast satellite signal transmission system 297 1987
4803725 Cryptographic system using interchangeable key blocks and selectable key fragments 165 1987
4989245 Controlled authorization of descrambling of scrambled programs broadcast between different jurisdictions 66 1989
5144664 Apparatus and method for upgrading terminals to maintain a secure communication network 180 1990
5091936 System for communicating television signals or a plurality of digital audio signals in a standard television line allocation 94 1991
5138659 Conversion of television signal formats with retention of common control data stream 132 1991
 
VERIZON PATENT AND LICENSING INC. (4)
5535276 Yaksha, an improved system and method for securing communications using split private key asymmetric cryptography 369 1994
5583863 Full service network using asynchronous transfer mode multiplexing 125 1995
5666293 Downloading operating system software through a broadcast channel 707 1995
5768539 Downloading applications software through a broadcast channel 313 1996
 
IRDETO B.V. (1)
2004/0064,688 Secure packet-based data broadcasting architecture 84 2003
 
THOMSON LICENSING (5)
7039802 Conditional access system for set-top boxes 74 1998
6418169 System for prioritizing bi-directional broadcast data 105 1998
6529526 System for processing programs and program content rating information derived from multiple broadcast sources 205 1998
6714650 Recording of scrambled digital data 88 2000
2003/0159,152 Fast motion trick mode using dummy bidirectional predictive pictures 51 2002
 
ROVI TECHNOLOGIES CORPORATION (1)
6055314 System and method for secure purchase and delivery of video content programs 611 1996
 
ARRIS ENTERPRISES, INC. (2)
5539823 Subscription television picture scrambling and descrambling system providing compatibility with different such systems 59 1994
6072872 Determination of scrambling mode of a television signal 61 1998
 
RPX CORPORATION (1)
5751280 System and method for media stream synchronization with a base atom index file and an auxiliary atom index file 117 1995
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (6)
5124117 Cryptographic key distribution method and system 95 1991
5258835 Method of quantizing, coding and transmitting a digital video signal 99 1991
5237424 Digital video signal recording/reproducing apparatus 130 1991
6463152 Digital broadcast receiving and reproducing apparatus 48 1999
6754276 System stream creating apparatus which adjusts system clock reference based on total number of pictures to be stored and decoded during certain time period 58 2000
2003/0084,284 Data distribution system, sending device, receiving device, data distribution method, sending method, receiving method, recording medium on which data preparation program is recorded and recording medium on which data assembling program is recorded 59 2002
 
ATMEL CORPORATION (1)
5359694 Method and apparatus for converting image data 109 1992
 
VERANCE CORPORATION (1)
5963909 Multi-media copy management system 325 1997
 
AT&T CORP. (2)
6125349 Method and apparatus using digital credentials and other electronic certificates for electronic transactions 114 1998
6452923 Cable connected wan interconnectivity services for corporate telecommuters 282 1998
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2009/0185,684 MOTION PICTURE DISTRIBUTION SYSTEM AND RELATED METHOD 3 2009
 
SONY ELECTRONICS INC. (2)
* 8204220 Simulcrypt key sharing with hashed keys 2 2008
* 2010/0067,703 Simulcrypt key sharing with hashed keys 4 2008
 
COMCAST CABLE COMMUNICATIONS, LLC (1)
* 2013/0129,095 Key Delivery 1 2011
 
STMICROELECTRONICS LIMITED (1)
* 8838998 Circuit personalization 0 2013
* Cited By Examiner

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