US Patent No: 7,711,115

Number of patents in Portfolio can not be more than 2000

Descrambler

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ALSO PUBLISHED AS: 20040088558
ATTORNEY / AGENT: (SPONSORED)
 

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Abstract

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, JP36236
SONY ELECTRONICS INC.PARK RIDGE, NJ2743

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Candelore, Brant L Escondido, CA 250 2643

Cited Art

Patent Info (Count) # Cites Year
 
SONY CORPORATION (32)
4,419,693 Error concealment in digital television signals 95 1981
4,381,519 Error concealment in digital television signals 96 1981
4,703,351 Apparatus for an efficient coding of television signals 100 1985
4,703,352 High efficiency technique for coding a digital video signal 114 1985
4,710,811 Highly efficient coding apparatus for a digital video signal 98 1985
4,722,003 High efficiency coding apparatus 97 1986
4,788,589 Method and apparatus for transmitting video data 89 1986
4,772,947 Method and apparatus for transmitting compression video data and decoding the same for reconstructing an image from the received data 108 1986
4,845,560 High efficiency coding apparatus 137 1988
4,890,161 Decoding apparatus 107 1989
4,953,023 Coding apparatus for encoding and compressing video data 93 1989
5,142,537 Video signal processing circuit 115 1990
5,023,710 Highly efficient coding apparatus 169 1990
5,241,381 Video signal compression using 2-d ADRC of successive non-stationary frames and stationary frame dropping 90 1991
5,416,651 Apparatus for magnetically recording digital data 92 1991
5,196,931 Highly efficient coding apparatus producing encoded high resolution signals reproducible by a VTR intended for use with standard resolution signals 92 1991
5,379,072 Digital video signal resolution converting apparatus using an average of blocks of a training signal 91 1992
5,481,554 Data transmission apparatus for transmitting code data 94 1993
5,600,721 Apparatus for scrambling a digital video signal 57 1994
5,598,214 Hierarchical encoding and decoding apparatus for a digital image signal 107 1994
5,469,216 Apparatus and method for processing a digital video signal to produce interpolated data 116 1994
5,528,608 De-interleave circuit for regenerating digital data 74 1995
5,917,915 Scramble/descramble method and apparatus for data broadcasting 116 1995
5,787,171 Data transmitter and receiver 39 1995
5,663,764 Hierarchical encoding and decoding apparatus for a digital image signal 114 1995
5,923,486 Recording and reproducing system for protecting copyrighted data 41 1995
5,852,470 Signal converting apparatus and signal converting method 128 1996
5,973,722 Combined digital audio/video on demand and broadcast distribution system 189 1996
6,263,506 Data transmission and reception device and system, data transmission method and parameter setting method for data reception device 65 1997
6,266,480 Apparatus and method for effectively inhibiting unauthorized copying of picture signals which does not interfere with an authorized display thereof 67 1997
2002/0188,567 Method for simulcrypting scrambled data to a plurality of conditional access devices 18 2002
2004/0049,690 Selective encryption to enable trick play 52 2002
 
SONY ELECTRONICS INC. (32)
6,154,206 Method and apparatus for distributed conditional access control on a serial communication network 93 1999
6,246,720 Flexible software-based decoding system with decoupled decoding timing and output timing 54 1999
7,010,685 Method and apparatus for storing scrambled digital programs by filtering product identifier 7 1999
6,697,489 Method and apparatus for securing control words 100 2000
7,146,007 Secure conditional access port interface 39 2000
7,124,303 Elementary stream partial encryption 106 2002
7,127,619 Decoding and decryption of partially encrypted information 67 2002
7,139,398 Time division partial encryption 70 2002
7,151,831 Partial encryption and PID mapping 53 2002
2002/0194,613 Reconstitution of program streams split across multiple program identifiers 65 2002
2003/0222,994 Method and apparatus for synchronizing dynamic graphics 42 2002
7,155,012 Slice mask and moat pattern partial encryption 54 2002
7,039,938 Selective encryption for video on demand 57 2002
7,120,250 Content distribution for multiple digital rights management 79 2002
2003/0174,837 Content replacement by PID mapping 77 2002
2004/0165,586 PID filters based network routing 55 2003
2003/0174,844 Method and apparatus for protecting the transfer of data 77 2003
2005/0036,067 Variable perspective view of video images 38 2003
2005/0066,357 Modifying content rating 46 2003
2004/0158,721 System, method and apparatus for secure digital content transmission 41 2004
2005/0097,596 Re-encrypted delivery of video-on-demand content 41 2004
2005/0097,614 Bi-directional indices for trick mode video-on-demand 45 2004
2005/0102,702 Cablecard with content manipulation 46 2004
2005/0094,809 Preparation of content for multiple conditional access methods in video on demand 44 2004
2005/0097,597 Hybrid storage of video on demand content 42 2004
2004/0181,666 IP delivery of secure digital content 42 2004
2005/0028,193 Macro-block based content replacement by PID mapping 58 2004
2005/0169,473 Multiple selective encryption with DRM 71 2004
2005/0192,904 Selective encryption with coverage encryption 67 2005
2006/0130,119 Advanced parental control for digital content 49 2005
2006/0130,121 System and method for the creation, synchronization and delivery of alternate content 51 2005
2006/0174,264 Content personalization for digital conent 40 2006
 
INTEL CORPORATION (24)
5,122,873 Method and apparatus for selectively encoding and decoding a digital motion video signal at multiple resolution levels 258 1991
5,539,828 Apparatus and method for providing secured communications 232 1994
5,568,552 Method for providing a roving software license from one node to another node 383 1995
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5,805,712 Apparatus and method for providing secured communications 245 1995
6,134,551 Method of caching digital certificate revocation lists 99 1996
6,088,450 Authentication system based on periodic challenge/response protocol 163 1996
5,825,879 System and method for copy-protecting distributed video content 155 1996
5,805,700 Policy based selective encryption of compressed video data 84 1996
5,915,018 Key management system for DVD copyright management 130 1996
6,021,201 Method and apparatus for integrated ciphering and hashing 99 1997
5,949,877 Content protection for transmission systems 147 1997
6,069,647 Conditional access and content security method 121 1998
6,223,290 Method and apparatus for preventing the fraudulent use of a cellular telephone 59 1998
6,185,546 Apparatus and method for providing secured communications 71 1998
6,209,098 Circuit and method for ensuring interconnect security with a multi-chip integrated circuit package 86 1998
6,389,533 Anonymity server 72 1999
6,550,008 Protection of information transmitted over communications channels 63 1999
6,199,053 Digital signature purpose encoding 77 1999
6,389,537 Platform and method for assuring integrity of trusted agent communications 196 1999
6,324,288 Cipher core in a content protection system 57 1999
6,292,892 Apparatus and method for providing secured communications 65 2000
2002/0129,243 System for selective encryption of data packets 50 2001
 
GENERAL INSTRUMENT CORPORATION (16)
4,739,510 Direct broadcast satellite signal transmission system 227 1987
4,803,725 Cryptographic system using interchangeable key blocks and selectable key fragments 122 1987
4,989,245 Controlled authorization of descrambling of scrambled programs broadcast between different jurisdictions 52 1989
5,144,664 Apparatus and method for upgrading terminals to maintain a secure communication network 133 1990
5,091,936 System for communicating television signals or a plurality of digital audio signals in a standard television line allocation 87 1991
5,138,659 Conversion of television signal formats with retention of common control data stream 114 1991
5,539,823 Subscription television picture scrambling and descrambling system providing compatibility with different such systems 54 1994
5,485,577 Method and apparatus for incremental delivery of access rights 135 1994
5,754,650 Simultaneous multichannel television access control system and method 75 1995
5,894,320 Multi-channel television system with viewer-selectable video and audio 171 1996
5,917,830 Splicing compressed packetized digital video streams 292 1996
6,057,872 Digital coupons for pay televisions 202 1997
6,072,872 Determination of scrambling mode of a television signal 55 1998
2002/0083,438 System for securely delivering encrypted content on demand with access contrl 79 2001
2003/0198,223 Method and apparatus for identifying data streams as networks 45 2002
2004/0123,094 Efficient distribution of encrypted content for multiple content access systems 55 2003
 
SCIENTIFIC-ATLANTA, INC. (15)
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5,400,401 System and method for transmitting a plurality of digital services 282 1992
5,319,707 System and method for multiplexing a plurality of digital program services for transmission to remote locations 290 1992
5,341,425 Methods and apparatus for uniquely encrypting data at a plurality of data transmission sites for transmission to a reception site 180 1992
5,381,481 Method and apparatus for uniquely encrypting a plurality of services at a transmission site 99 1993
5,420,866 Methods for providing conditional access information to decoders in a packet-based multiplexed communications system 254 1994
5,870,474 Method and apparatus for providing conditional access in connection-oriented, interactive networks with a multiplicity of service providers 284 1995
5,923,755 Multi-service data receiver architecture 60 1997
6,105,134 Verification of the source of program information in a conditional access system 180 1998
6,157,719 Conditional access system 215 1998
2002/0094,084 METHOD AND APPARATUS FOR PROVIDING CONDITIONAL ACCESS IN CONNECTION-ORIENTED INTERACTIVE NETWORKS WITH A MULTIPLICITY OF SERVICE PROVIDERS 48 1998
6,424,717 Encryption devices for use in a conditional access system 139 1999
6,292,568 Representing entitlements to service in a conditional access system 91 2000
7,065,213 In a subscriber network receiving digital packets and transmitting digital packets below a predetermined maximum bit rate 53 2001
2004/0136,532 Partial dual-encrypted stream utilizing program map tables 46 2003
 
KABUSHIKI KAISHA TOSHIBA (10)
4,700,387 Broadcast system for scrambled programming signals 61 1985
5,398,078 Method of detecting a motion vector in an image coding apparatus 135 1992
5,703,889 High efficiency coding signal processing apparatus with error propagation influence reduction 97 1994
6,026,164 Communication processing system with multiple data layers for digital television broadcasting 58 1996
6,061,451 Apparatus and method for receiving and decrypting encrypted data and protecting decrypted data from illegal use 161 1997
5,999,698 Multiangle block reproduction system 303 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 93 1997
6,477,649 Information recording apparatus, information reproducing apparatus, and information distribution system 54 1998
6,917,684 Method of encryption and decryption with block number dependant key sets, each set having a different number of keys 41 2000
6,650,754 Broadcast reception device and contract management device using common master key in conditional access broadcast system 46 2002
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (7)
5,124,117 Cryptographic key distribution method and system 70 1991
5,258,835 Method of quantizing, coding and transmitting a digital video signal 91 1991
5,237,424 Digital video signal recording/reproducing apparatus 125 1991
5,922,048 Video-on-demand system capable of performing a high-speed playback at a correct speed 64 1998
6,463,152 Digital broadcast receiving and reproducing apparatus 43 1999
6,754,276 System stream creating apparatus which adjusts system clock reference based on total number of pictures to be stored and decoded during certain time period 48 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 52 2002
 
LG ELECTRONICS INC. (6)
5,018,197 Secure video decoder system 58 1990
5,438,369 Digital data interleaving system with improved error correctability for vertically correlated interference 90 1992
5,590,202 Countdown system for conditional access module 77 1995
5,757,909 Illegal view and copy protection method in digital video system and controlling method thereof 99 1995
6,311,012 Apparatus and method for reproducing multiple camera-angle signals from a disc 46 1997
6,028,932 Copy prevention method and apparatus for digital video system 74 1998
 
COMCAST IP HOLDINGS I, LLC (5)
6,510,554 Method for generating information sub-streams for FF/REW applications 100 1998
6,229,895 Secure distribution of video on-demand 153 1999
6,240,553 Method for providing scalable in-band and out-of-band access within a video-on-demand environment 117 1999
6,415,031 Selective and renewable encryption for secure distribution of video on-demand 147 2000
6,681,326 Secure distribution of video on-demand 93 2001
 
HITACHI, LTD. (5)
5,159,452 Video signal transmitting method and equipment of the same 144 1990
5,726,702 Television signal receiving apparatus incorporating an information retrieving and reproducing apparatus 70 1995
5,897,218 Signal recording/reproducing method and apparatus in which key information for descrambling is recorded in an area on the signal recording medium 16 1997
6,557,031 Transport protocol conversion method and protocol conversion equipment 114 1998
6,256,747 Method of managing distributed servers and distributed information processing system using the method 74 1998
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (5)
5,414,852 Method for protecting data in a computer system 137 1992
6,236,727 Apparatus, method and computer program product for protecting copyright data within a computer system 138 1997
6,118,873 System for encrypting broadcast programs in the presence of compromised receiver devices 147 1998
6,834,110 Multi-tier digital TV programming for content distribution 71 1999
2006/0136,976 Re-mapping and interleaving transport packets of multiple transport streams for processing by a single transport demultiplexor 42 2006
 
MICROSOFT CORPORATION (5)
5,999,622 Method and apparatus for protecting widely distributed digital information 139 1995
6,055,314 System and method for secure purchase and delivery of video content programs 451 1996
6,697,944 Digital content distribution, transmission and protection system and method, and portable device for use therewith 325 1999
6,772,340 Digital rights management system operating on computing device and having black box tied to computing device 217 2000
2004/0100,510 User interface for a resource search tool 63 2003
 
THOMSON LICENSING (5)
7,039,802 Conditional access system for set-top boxes 46 1998
6,418,169 System for prioritizing bi-directional broadcast data 78 1998
6,529,526 System for processing programs and program content rating information derived from multiple broadcast sources 100 1998
6,714,650 Recording of scrambled digital data 66 2000
2003/0159,152 Fast motion trick mode using dummy bidirectional predictive pictures 45 2002
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (4)
5,606,359 Video on demand system with multiple data sources configured to provide vcr-like services 237 1994
5,815,146 Video on demand system with multiple data sources configured to provide VCR-like services 194 1996
6,064,748 Method and apparatus for embedding and retrieving additional data in an encoded data stream 75 1998
6,976,166 Method and apparatus for partial encryption of content 64 2001
 
SAMSUNG ELECTRONICS CO., LTD. (4)
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6,185,369 Apparatus and method for synchronously reproducing multi-angle data 50 1997
6,430,361 Multi-angle digital and audio synchronization recording and playback apparatus and method 59 1997
2003/0226,149 Integrated home network system for providing multimedia services and integrated terminal device for the integrated home network system 59 2002
 
THOMSON CONSUMER ELECTRONICS, INC. (4)
5,933,500 Adaptive decoding system for processing encrypted and non-encrypted broadcast, cable or satellite video data 132 1996
6,016,348 Decoding system and data format for processing and storing encrypted broadcast, cable or satellite video data 140 1996
5,852,290 Smart-card based access control system with improved security 102 1997
5,699,429 Packet TV program component detector 51 1997
 
CISCO TECHNOLOGY, INC. (3)
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6,587,561 Key delivery in a secure broadcasting system 73 1999
2004/0111,613 Digital rights management system and method 38 2003
 
CRYPTOGRAPHY RESEARCH, INC. (3)
6,278,783 Des and other cryptographic, processes with leak minimization for smartcards and other cryptosystems 111 1999
6,289,455 Method and apparatus for preventing piracy of digital content 203 1999
6,640,305 Digital content protection method and apparatus 116 2001
 
MACROVISION CORPORATION (3)
5,574,787 Apparatus and method for comprehensive copy protection for video platforms and unprotected source material 220 1994
6,590,979 Method and apparatus for compression compatible video scrambling 37 1998
2003/0078,891 Systems and methods for providing digital rights management compatibility 33 2002
 
OPENTV, INC. (3)
6,181,334 Compressed digital-data interactive program system 101 1997
6,204,843 Compressed digital-data interactive program system 79 1999
6,215,484 Compressed digital-data interactive program system 74 1999
 
SCIENTIFIC-ATLANTA, LLC (3)
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2003/0097,662 Networked subscriber television distribution 55 2002
2004/0003,008 Method for partially encrypting program data 53 2003
 
SUN MICROSYSTEMS, INC. (3)
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6,230,266 Authentication system and process 74 1999
 
TELEDIFFUSION DE FRANCE (3)
5,615,265 Process for the transmission and reception of conditional access programs controlled by the same operator 56 1994
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6,307,939 Method and equipment for allocating to a television program, which is already conditionally accessed, a complementary conditional access 119 1999
 
TEXAS INSTRUMENTS INCORPORATED (3)
4,521,853 Secure microprocessor/microcomputer with secured memory 91 1982
5,629,981 Information management and security system 634 1994
6,526,144 Data protection system 57 1998
 
TIME WARNER ENTERTAINMENT COMPANY, L.P. (3)
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5,850,218 Inter-active program guide with default selection control 600 1997
6,378,130 Media server interconnect architecture 162 1997
 
TITAN CORPORATION, THE (3)
4,634,808 Descrambler subscriber key production system utilizing key seeds stored in descrambler 136 1984
4,712,238 Selective-subscription descrambling 203 1984
5,796,829 Conditional access system 103 1996
 
U.S. PHILIPS CORPORATION (3)
5,428,403 Motion vector estimation, motion picture encoding and storage 124 1992
5,625,715 Method and apparatus for encoding pictures including a moving object 151 1993
5,818,934 Method and apparatus for providing a cryptographically secure interface between the decryption engine and the system decoder of a digital television receiver 61 1996
 
VERIZON SERVICES CORP. (3)
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5,666,293 Downloading operating system software through a broadcast channel 459 1995
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4,944,006 Secure data packet transmission system and method 84 1989
4,995,080 Television signal scrambling system and method 82 1990
5,491,748 Enhanced security for a cable system 51 1994
 
ACTIVEVIDEO NETWORKS, INC. (2)
5,594,507 Compressed digital overlay controller and method for MPEG type video signal 62 1994
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AT&T CORP. (2)
6,125,349 Method and apparatus using digital credentials and other electronic certificates for electronic transactions 89 1998
6,452,923 Cable connected wan interconnectivity services for corporate telecommuters 197 1998
 
CANON KABUSHIKI KAISHA (2)
5,751,743 Information transmission method and apparatus 86 1992
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DAEWOO ELECTRONICS CO., LTD. (2)
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5,481,627 Method for rectifying channel errors in a transmitted image signal encoded by classified vector quantization 88 1994
 
FUJI PHOTO FILM CO., LTD. (2)
4,815,078 Method of quantizing predictive errors 87 1987
7,067,028 Process for forming image 42 2004
 
FUJITSU LIMITED (2)
5,784,464 System for and method of authenticating a client 114 1996
5,787,179 Scrambling and descrambling of data with improved security 34 1996
 
GOOGLE INC. (2)
6,643,298 Method and apparatus for MPEG-2 program ID re-mapping for multiplexing several programs into a single transport stream 80 1999
6,654,389 System and method for searching patterns in real-time over a shared media 72 1999
 
LSI CORPORATION (2)
6,072,873 Digital video broadcasting 94 1998
6,351,538 Conditional access and copy protection scheme for MPEG encoded video data 83 1998
 
MOTOROLA MOBILITY LLC (2)
5,751,813 Use of an encryption server for encrypting messages 120 1996
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NOVA SCOTIA, BANK OF, THE AS ADMINISTRATIVE AGENT (2)
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PANASONIC CORPORATION (2)
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ACTIVCARD (1)
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AKIKAZE TECHNOLOGIES, LLC (1)
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AMARYLLIS INTERNATIONAL, LTD. (1)
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AMOSMET INVESTMENTS LLC (1)
6,222,924 Scrambling of digital media objects in connection with transmission and storage 47 1998
 
AT&T BELL LABORATORIES (1)
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ATMEL CORPORATION (1)
5,359,694 Method and apparatus for converting image data 102 1992
 
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BRITISH BROADCASTING CORPORATION (1)
5,555,305 Method and apparatus for secure transmission of video signals 63 1994
 
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY (1)
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BROADCOM CORPORATION (1)
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CSR TECHNOLOGY INC. (1)
6,415,101 Method and system for scanning and displaying multiple view angles formatted in DVD content 96 1998
 
DETA TECHNOLOGY DEVELOPMENT LLC (1)
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DIEGO, INC. (1)
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DOLBY LABORATORIES LICENSING CORPORATION (1)
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6,247,127 Method and apparatus for providing off-line secure communications 36 1997
 
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FINTEL S.A. (1)
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FUJIFILM CORPORATION (1)
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GARFIELD GROUP, LC, THE (1)
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GENERAL INSTRUMENT, INC. (1)
2002/0170,053 ECM and EMM distribution for multimedia multicast content 72 2001
 
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7,143,289 System and method for delivering encrypted information in a communication network using location identity and key tables 32 2001
 
GUAN TECHNOLOGIES, LLC (1)
5,582,470 Scanner housing 52 1995
 
HITACHI AMERICA, LTD. (1)
5,805,762 Video recording device compatible transmitter 135 1994
 
HUGHES ELECTRONICS CORPORATION (1)
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6,351,813 Access control/crypto system 176 1998
 
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2001/0042,043 CRYPTOGRAPHIC METHODS, APPARATUS AND SYSTEMS FOR STORAGE MEDIA ELECTRONIC RIGHTS MANAGEMENT IN CLOSED AND CONNECTED APPLIANCES 216 1997
 
IPG ELECTRONICS 503 LIMITED (1)
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IRDETO ACCESS B.V. (1)
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JARQUE; GREG (1)
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KONINKLIJKE PHILIPS ELECTRONICS N.V. (1)
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KONINKLIJKE PTT NEDERLAND N.V. (1)
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KYBERPASS CORPORATION (1)
6,189,096 User authentification using a virtual private key 168 1998
 
LEVEL 3 COMMUNICATIONS, LLC (1)
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LOCKHEED MARTIN CORPORATION (1)
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LSI LOGIC CORPORATION (1)
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LUCENT TECHNOLOGIES INC. (1)
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MASSACHUSETTS INSTITUTE OF TECHNOLOGY (1)
5,444,491 Television system with multiple transmission formats 131 1994
 
MEVIS-CENTRUM FUR MEDIZINISCHE DIAGNOSESYSTEME UND VISUALISIERUNG GMBH (1)
6,895,128 Method and computer system for prefetching of images 42 2001
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
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MOTOROLA, INC. (1)
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NAGRA THOMSOM LICENSING (1)
6,466,671 Smartcard for use with a receiver of encrypted broadcast signals, and receiver 105 1999
 
NCR CORPORATION (1)
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NEC ELECTRONICS CORPORATION (1)
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Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
SONY ELECTRONICS INC. (1)
8,204,220 Simulcrypt key sharing with hashed keys 0 2008

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