DK85085A - Dekoder - Google Patents

Dekoder Download PDF

Info

Publication number
DK85085A
DK85085A DK85085A DK85085A DK85085A DK 85085 A DK85085 A DK 85085A DK 85085 A DK85085 A DK 85085A DK 85085 A DK85085 A DK 85085A DK 85085 A DK85085 A DK 85085A
Authority
DK
Denmark
Prior art keywords
signal
descrambler
subscriber
key
unique
Prior art date
Application number
DK85085A
Other languages
English (en)
Other versions
DK166247C (da
DK166247B (da
DK85085D0 (da
Inventor
Karl E Moerder
Original Assignee
Ma Com Linkabit Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ma Com Linkabit Inc filed Critical Ma Com Linkabit Inc
Publication of DK85085D0 publication Critical patent/DK85085D0/da
Publication of DK85085A publication Critical patent/DK85085A/da
Publication of DK166247B publication Critical patent/DK166247B/da
Application granted granted Critical
Publication of DK166247C publication Critical patent/DK166247C/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Push-Button Switches (AREA)
  • Semiconductor Lasers (AREA)
  • Error Detection And Correction (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Circuits Of Receivers In General (AREA)
  • Telephone Function (AREA)
  • Pens And Brushes (AREA)
DK085085A 1984-03-15 1985-02-25 Noeglesignalsystem til at reproducere et abonnentnoeglesignal i en signalgenopretter DK166247C (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US58974184 1984-03-15
US06/589,741 US4634808A (en) 1984-03-15 1984-03-15 Descrambler subscriber key production system utilizing key seeds stored in descrambler

Publications (4)

Publication Number Publication Date
DK85085D0 DK85085D0 (da) 1985-02-25
DK85085A true DK85085A (da) 1985-09-16
DK166247B DK166247B (da) 1993-03-22
DK166247C DK166247C (da) 1993-08-16

Family

ID=24359313

Family Applications (1)

Application Number Title Priority Date Filing Date
DK085085A DK166247C (da) 1984-03-15 1985-02-25 Noeglesignalsystem til at reproducere et abonnentnoeglesignal i en signalgenopretter

Country Status (9)

Country Link
US (1) US4634808A (da)
EP (1) EP0155762B1 (da)
JP (1) JPS6116643A (da)
AT (1) ATE55035T1 (da)
AU (1) AU566316B2 (da)
CA (1) CA1225458A (da)
DE (1) DE3578792D1 (da)
DK (1) DK166247C (da)
NO (1) NO166909C (da)

Families Citing this family (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4965825A (en) 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods
US7831204B1 (en) 1981-11-03 2010-11-09 Personalized Media Communications, Llc Signal processing apparatus and methods
JPS60501882A (ja) * 1983-07-22 1985-10-31 インデペンデント・ブロ−ドキヤステイング・オ−ソリテイ スクランブル装置及びデ・スクランブル装置
US4835697A (en) * 1984-04-02 1989-05-30 Pitney Bowes Inc. Combination generator for an electronic postage meter
US4712238A (en) * 1984-06-08 1987-12-08 M/A-Com Government Systems, Inc. Selective-subscription descrambling
US4887296A (en) * 1984-10-26 1989-12-12 Ricoh Co., Ltd. Cryptographic system for direct broadcast satellite system
DE3501178A1 (de) * 1985-01-16 1986-07-17 Blaupunkt-Werke Gmbh, 3200 Hildesheim Verfahren und schaltungsanordnung zur verhinderung des unberechtigten empfangs verschluesselter fernsehsignale
US4864494A (en) * 1986-03-21 1989-09-05 Computerized Data Ssytems For Mfg., Inc. Software usage authorization system with key for decrypting/re-encrypting/re-transmitting moving target security codes from protected software
US4893339A (en) * 1986-09-03 1990-01-09 Motorola, Inc. Secure communication system
US4797672A (en) * 1986-09-04 1989-01-10 Octel Communications Corp. Voice network security system
US5209770A (en) * 1989-05-26 1993-05-11 E. I. Du Pont De Nemours And Company Herbicidal pyridinesulfonylureas
US5101373A (en) * 1987-04-14 1992-03-31 Hitachi, Ltd. System and method for securing remote terminal and remote terminal program
GB2204465B (en) * 1987-05-01 1991-06-19 Philips Electronic Associated A method of and an arrangement for digital signal encryption
US4827507A (en) * 1987-06-19 1989-05-02 Motorola, Inc. Duplex analog scrambler
US4995081A (en) * 1988-03-21 1991-02-19 Leighton Frank T Method and system for personal identification using proofs of legitimacy
US4879747A (en) * 1988-03-21 1989-11-07 Leighton Frank T Method and system for personal identification
FR2632148B1 (fr) * 1988-05-27 1990-08-10 France Etat Procede de diffusion et de reception de messages de gestion de titres d'acces
US4864615A (en) * 1988-05-27 1989-09-05 General Instrument Corporation Reproduction of secure keys by using distributed key generation data
US5029207A (en) * 1990-02-01 1991-07-02 Scientific-Atlanta, Inc. External security module for a television signal decoder
US5237610A (en) * 1990-02-01 1993-08-17 Scientific-Atlanta, Inc. Independent external security module for a digitally upgradeable television signal decoder
GB9003325D0 (en) * 1990-02-14 1990-04-11 Enfranchise Sixty Ltd Apparatus and method for controlling access to broadcast signals
US5111504A (en) * 1990-08-17 1992-05-05 General Instrument Corporation Information processing apparatus with replaceable security element
US5081676A (en) * 1990-10-04 1992-01-14 Chou Wayne W Method and apparatus for protecting multiple copies of computer software from unauthorized use
IT1244351B (it) * 1990-12-21 1994-07-08 Telettra Spa Sistema e dispositivi per la crittografia di segnali digitali
US5091936A (en) * 1991-01-30 1992-02-25 General Instrument Corporation System for communicating television signals or a plurality of digital audio signals in a standard television line allocation
JP2935307B2 (ja) * 1992-02-20 1999-08-16 株式会社日立製作所 ディスプレイ
US5341425A (en) * 1992-12-02 1994-08-23 Scientific Atlanta, Inc. Methods and apparatus for uniquely encrypting data at a plurality of data transmission sites for transmission to a reception site
JP3334211B2 (ja) * 1993-02-10 2002-10-15 株式会社日立製作所 ディスプレイ
US5390251A (en) * 1993-10-08 1995-02-14 Pitney Bowes Inc. Mail processing system including data center verification for mailpieces
DE69535935D1 (de) 1994-02-24 2009-05-28 Comcast Cable Holdings Llc Verfahren und Vorrichtung zur Erstellung einer kryptographischen Verbindung zwischen Elementen eines Systems
US5787172A (en) * 1994-02-24 1998-07-28 The Merdan Group, Inc. Apparatus and method for establishing a cryptographic link between elements of a system
FR2732176B1 (fr) * 1995-03-22 1997-05-09 Sagem Procede de transmission de donnees numeriques et recepteur pour la mise en oeuvre du procede
US5787089A (en) * 1996-07-25 1998-07-28 Northern Telecom Limited Digital signal broadcasting
US5930361A (en) * 1996-12-31 1999-07-27 Time Warner Cable, A Division Of Time Warner Entertainment Company, L.P. Video inversion detection apparatus and method
FI107097B (fi) 1997-09-24 2001-05-31 Nokia Networks Oy Kohdistettu yleislähetys radioverkossa
JP4620865B2 (ja) * 1997-12-10 2011-01-26 トムソン ライセンシング サービス・プロバイダのイベントを表す信号へのアクセスを管理する方法
US7730300B2 (en) * 1999-03-30 2010-06-01 Sony Corporation Method and apparatus for protecting the transfer of data
US7565546B2 (en) 1999-03-30 2009-07-21 Sony Corporation System, method and apparatus for secure digital content transmission
US6697489B1 (en) * 1999-03-30 2004-02-24 Sony Corporation Method and apparatus for securing control words
US6289455B1 (en) * 1999-09-02 2001-09-11 Crypotography Research, Inc. Method and apparatus for preventing piracy of digital content
US6912513B1 (en) * 1999-10-29 2005-06-28 Sony Corporation Copy-protecting management using a user scrambling key
US7039614B1 (en) * 1999-11-09 2006-05-02 Sony Corporation Method for simulcrypting scrambled data to a plurality of conditional access devices
US7225164B1 (en) * 2000-02-15 2007-05-29 Sony Corporation Method and apparatus for implementing revocation in broadcast networks
US7120696B1 (en) 2000-05-19 2006-10-10 Stealthkey, Inc. Cryptographic communications using pseudo-randomly generated cryptography keys
US20040205812A1 (en) * 2000-06-22 2004-10-14 Candelore Brant L. Method and apparatus for routing program data in a program viewing unit
US20030206631A1 (en) * 2000-06-22 2003-11-06 Candelore Brant L. Method and apparatus for scrambling program data for furture viewing
US7149308B1 (en) * 2000-11-13 2006-12-12 Stealthkey, Inc. Cryptographic communications using in situ generated cryptographic keys for conditional access
US20020114453A1 (en) * 2001-02-21 2002-08-22 Bartholet Thomas G. System and method for secure cryptographic data transport and storage
US7895616B2 (en) * 2001-06-06 2011-02-22 Sony Corporation Reconstitution of program streams split across multiple packet identifiers
US7747853B2 (en) 2001-06-06 2010-06-29 Sony Corporation IP delivery of secure digital content
US7350082B2 (en) * 2001-06-06 2008-03-25 Sony Corporation Upgrading of encryption
US7139398B2 (en) * 2001-06-06 2006-11-21 Sony Corporation Time division partial encryption
IL144369A (en) 2001-07-17 2009-06-15 Eli Yanovsky Secure communication system and method using shared random source for key changing
US7292691B2 (en) 2002-01-02 2007-11-06 Sony Corporation Progressive video refresh slice detection
US7215770B2 (en) 2002-01-02 2007-05-08 Sony Corporation System and method for partially encrypted multimedia stream
US7233669B2 (en) * 2002-01-02 2007-06-19 Sony Corporation Selective encryption to enable multiple decryption keys
US7765567B2 (en) * 2002-01-02 2010-07-27 Sony Corporation Content replacement by PID mapping
US7039938B2 (en) * 2002-01-02 2006-05-02 Sony Corporation Selective encryption for video on demand
US7376233B2 (en) * 2002-01-02 2008-05-20 Sony Corporation Video slice and active region based multiple partial encryption
US7823174B2 (en) * 2002-01-02 2010-10-26 Sony Corporation Macro-block based content replacement by PID mapping
US7218738B2 (en) * 2002-01-02 2007-05-15 Sony Corporation Encryption and content control in a digital broadcast system
US7242773B2 (en) * 2002-09-09 2007-07-10 Sony Corporation Multiple partial encryption using retuning
US7302059B2 (en) * 2002-01-02 2007-11-27 Sony Corporation Star pattern partial encryption
US7155012B2 (en) 2002-01-02 2006-12-26 Sony Corporation Slice mask and moat pattern partial encryption
US20030128843A1 (en) * 2002-01-04 2003-07-10 Andrew Brown Method and apparatus for preserving a strong random number across battery replacement in a security subsystem
AU2003208528A1 (en) * 2002-03-19 2003-09-29 Koninklijke Philips Electronics N.V. Conditional access control
US20090180025A1 (en) * 2002-05-28 2009-07-16 Sony Corporation Method and apparatus for overlaying graphics on video
US7530084B2 (en) * 2002-05-28 2009-05-05 Sony Corporation Method and apparatus for synchronizing dynamic graphics
US7352867B2 (en) * 2002-07-10 2008-04-01 General Instrument Corporation Method of preventing unauthorized distribution and use of electronic keys using a key seed
EP1540877A4 (en) * 2002-07-16 2008-01-30 King Green Ltd SAFE COMMUNICATION SYSTEM AND METHOD FOR USING A SHARED SOFTWARE SOURCE FOR SHUTTER CHANGE
US8818896B2 (en) * 2002-09-09 2014-08-26 Sony Corporation Selective encryption with coverage encryption
US7724907B2 (en) 2002-11-05 2010-05-25 Sony Corporation Mechanism for protecting the transfer of digital content
US8572408B2 (en) 2002-11-05 2013-10-29 Sony Corporation Digital rights management of a digital device
EP1563637B1 (en) 2002-11-05 2013-07-03 Sony Electronics, Inc. Mechanism for protecting the transfer of digital content
US8645988B2 (en) * 2002-12-13 2014-02-04 Sony Corporation Content personalization for digital content
US8667525B2 (en) * 2002-12-13 2014-03-04 Sony Corporation Targeted advertisement selection from a digital stream
US20040165586A1 (en) * 2003-02-24 2004-08-26 Read Christopher Jensen PID filters based network routing
US7409702B2 (en) * 2003-03-20 2008-08-05 Sony Corporation Auxiliary program association table
US7292692B2 (en) 2003-03-25 2007-11-06 Sony Corporation Content scrambling with minimal impact on legacy devices
US20050036067A1 (en) * 2003-08-05 2005-02-17 Ryal Kim Annon Variable perspective view of video images
US7286667B1 (en) 2003-09-15 2007-10-23 Sony Corporation Decryption system
US20050066357A1 (en) * 2003-09-22 2005-03-24 Ryal Kim Annon Modifying content rating
US7853980B2 (en) * 2003-10-31 2010-12-14 Sony Corporation Bi-directional indices for trick mode video-on-demand
US7263187B2 (en) * 2003-10-31 2007-08-28 Sony Corporation Batch mode session-based encryption of video on demand content
US7346163B2 (en) * 2003-10-31 2008-03-18 Sony Corporation Dynamic composition of pre-encrypted video on demand content
US20050097597A1 (en) * 2003-10-31 2005-05-05 Pedlow Leo M.Jr. Hybrid storage of video on demand content
US7343013B2 (en) * 2003-12-16 2008-03-11 Sony Corporation Composite session-based encryption of video on demand content
US20050097596A1 (en) * 2003-10-31 2005-05-05 Pedlow Leo M.Jr. Re-encrypted delivery of video-on-demand content
US7620180B2 (en) * 2003-11-03 2009-11-17 Sony Corporation Preparation of content for multiple conditional access methods in video on demand
US20050102702A1 (en) * 2003-11-12 2005-05-12 Candelore Brant L. Cablecard with content manipulation
US20050169473A1 (en) * 2004-02-03 2005-08-04 Candelore Brant L. Multiple selective encryption with DRM
US7895617B2 (en) * 2004-12-15 2011-02-22 Sony Corporation Content substitution editor
US8041190B2 (en) 2004-12-15 2011-10-18 Sony Corporation System and method for the creation, synchronization and delivery of alternate content
US7792522B1 (en) 2006-01-13 2010-09-07 Positive Access Corporation Software key control for mobile devices
US8185921B2 (en) 2006-02-28 2012-05-22 Sony Corporation Parental control of displayed content using closed captioning
US7555464B2 (en) * 2006-03-01 2009-06-30 Sony Corporation Multiple DRM management
US8953790B2 (en) * 2011-11-21 2015-02-10 Broadcom Corporation Secure generation of a device root key in the field
CN106326763B (zh) 2015-06-15 2020-01-14 阿里巴巴集团控股有限公司 获取电子文件的方法及装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6906145A (da) * 1968-05-15 1969-11-18
US3914534A (en) * 1973-10-29 1975-10-21 Magnavox Co Methods and apparatus for scrambling and unscrambling premium television channels
US3911216A (en) * 1973-12-17 1975-10-07 Honeywell Inf Systems Nonlinear code generator and decoder for transmitting data securely
FR2313825A1 (fr) * 1975-06-06 1976-12-31 Telediffusion Fse Systeme de diffusion de donnees
US4200770A (en) * 1977-09-06 1980-04-29 Stanford University Cryptographic apparatus and method
US4168396A (en) * 1977-10-31 1979-09-18 Best Robert M Microprocessor for executing enciphered programs
FR2448825A1 (fr) * 1979-02-06 1980-09-05 Telediffusion Fse Systeme de transmission d'information entre un centre d'emission et des postes recepteurs, ce systeme etant muni d'un moyen de controle de l'acces a l'information transmise
FR2448824A1 (fr) * 1979-02-06 1980-09-05 Telediffusion Fse Systeme de videotex muni de moyens de controle d'acces a l'information
US4365110A (en) * 1979-06-05 1982-12-21 Communications Satellite Corporation Multiple-destinational cryptosystem for broadcast networks
FR2459595A1 (fr) * 1979-06-15 1981-01-09 Telediffusion Fse Systeme de television a controle d'acces utilisant une cle electronique variable
US4292650A (en) * 1979-10-29 1981-09-29 Zenith Radio Corporation Stv Subscriber address system
FR2480539B1 (fr) * 1980-04-09 1985-09-13 Cii Honeywell Bull Procede et systeme de transmission de messages signes
US4531021A (en) * 1980-06-19 1985-07-23 Oak Industries Inc. Two level encripting of RF signals
US4388643A (en) * 1981-04-06 1983-06-14 Northern Telecom Limited Method of controlling scrambling and unscrambling in a pay TV system
US4471164A (en) * 1981-10-13 1984-09-11 At&T Bell Laboratories Stream cipher operation using public key cryptosystem
US4484027A (en) * 1981-11-19 1984-11-20 Communications Satellite Corporation Security system for SSTV encryption
US4461032A (en) * 1982-06-21 1984-07-17 Zenith Radio Corporation CATV Service controller
US4531020A (en) * 1982-07-23 1985-07-23 Oak Industries Inc. Multi-layer encryption system for the broadcast of encrypted information
US4613901A (en) * 1983-05-27 1986-09-23 M/A-Com Linkabit, Inc. Signal encryption and distribution system for controlling scrambling and selective remote descrambling of television signals

Also Published As

Publication number Publication date
JPH0380380B2 (da) 1991-12-24
ATE55035T1 (de) 1990-08-15
EP0155762A3 (en) 1987-06-03
JPS6116643A (ja) 1986-01-24
CA1225458A (en) 1987-08-11
AU3954085A (en) 1985-09-19
NO850986L (no) 1985-09-16
DK166247C (da) 1993-08-16
DK166247B (da) 1993-03-22
AU566316B2 (en) 1987-10-15
US4634808A (en) 1987-01-06
DE3578792D1 (de) 1990-08-30
EP0155762B1 (en) 1990-07-25
NO166909C (no) 1991-09-11
DK85085D0 (da) 1985-02-25
NO166909B (no) 1991-06-03
EP0155762A2 (en) 1985-09-25

Similar Documents

Publication Publication Date Title
DK85085A (da) Dekoder
EP0343805A3 (en) Reproduction of secure keys by using distributed key generation data
US4168396A (en) Microprocessor for executing enciphered programs
US6266415B1 (en) Process for protecting an information item transmitted from a security element to a decoder and protection system using such a process
CA2164173A1 (en) Method and Apparatus for Incremental Delivery of Access Rights
US7203312B1 (en) Data reproduction apparatus and data reproduction module
ES2193705T3 (es) Red de comunicaciones.
CA2009290A1 (en) Public communication system comprising distributed stations, and station and sub-station for use in such a communication system
TW563320B (en) Method for distributing keys among a number of secure devices, method for communicating with a number of secure devices, security system, and set of secure devices
US5151938A (en) Security enhancement in a data processor through use of dynamic parameter authentication
JPH045298B2 (da)
JPH10164028A (ja) データ通信方法
JO2121B1 (en) Data management in the receiver unit and encryption solution
JPS63220630A (ja) 端末制御方式
JPH0789625B2 (ja) 暗号装置
KR920001575B1 (ko) 암호화 및 해독장치
JPH05316099A (ja) 暗号化された制御信号の通信システム
CA1264848C (en) Key signal encryption and distribution system for controlling scrambling and selective, remote descrambling of television signals
KR970068618A (ko) 디지탈 dbs의 제한수신 시스템에서 수신장치
ES8507302A1 (es) Un aparato para transferir informacion secreta desde una estacion central a una estacion terminal
JPH0218783B2 (da)
CA2358691A1 (en) Video control system

Legal Events

Date Code Title Description
PUP Patent expired