MX161937A - Mejoras en aparato para crear una senal de television y para incriptar y descriptar la senal al mismo tiempo y metodo para crear simultaneamente una senal de television normal - Google Patents

Mejoras en aparato para crear una senal de television y para incriptar y descriptar la senal al mismo tiempo y metodo para crear simultaneamente una senal de television normal

Info

Publication number
MX161937A
MX161937A MX2172A MX217286A MX161937A MX 161937 A MX161937 A MX 161937A MX 2172 A MX2172 A MX 2172A MX 217286 A MX217286 A MX 217286A MX 161937 A MX161937 A MX 161937A
Authority
MX
Mexico
Prior art keywords
create
signal
television signal
same time
descript
Prior art date
Application number
MX2172A
Other languages
English (en)
Inventor
John D Lowry
Keith Lucas
Original Assignee
Scientific Atlanta
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 Scientific Atlanta filed Critical Scientific Atlanta
Publication of MX161937A publication Critical patent/MX161937A/es

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
    • H04N7/169—Systems operating in the time domain of the television signal
    • H04N7/1696—Systems operating in the time domain of the television signal by changing or reversing the order of active picture signal portions

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Systems (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
MX2172A 1985-05-21 1986-04-15 Mejoras en aparato para crear una senal de television y para incriptar y descriptar la senal al mismo tiempo y metodo para crear simultaneamente una senal de television normal MX161937A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/736,301 US4642688A (en) 1983-06-24 1985-05-21 Method and apparatus for creating encrypted and decrypted television signals

Publications (1)

Publication Number Publication Date
MX161937A true MX161937A (es) 1991-03-08

Family

ID=24959344

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2172A MX161937A (es) 1985-05-21 1986-04-15 Mejoras en aparato para crear una senal de television y para incriptar y descriptar la senal al mismo tiempo y metodo para crear simultaneamente una senal de television normal

Country Status (14)

Country Link
US (1) US4642688A (es)
EP (1) EP0223781B1 (es)
JP (2) JPH0666949B2 (es)
CN (1) CN1005237B (es)
AT (1) ATE130994T1 (es)
AU (2) AU5869386A (es)
BR (1) BR8606685A (es)
CA (1) CA1332976C (es)
DE (1) DE3650444T2 (es)
DK (1) DK28987A (es)
FI (1) FI85088C (es)
MX (1) MX161937A (es)
WO (1) WO1986007226A1 (es)
ZA (1) ZA862838B (es)

Families Citing this family (24)

* 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
US7831204B1 (en) 1981-11-03 2010-11-09 Personalized Media Communications, Llc Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods
US4796299A (en) * 1985-08-22 1989-01-03 Itt Corporation Video encoder apparatus
US4866770A (en) * 1986-07-08 1989-09-12 Scientific Atlanta, Inc. Method and apparatus for communication of video, audio, teletext, and data to groups of decoders in a communication system
US4837820A (en) * 1986-10-17 1989-06-06 Zenith Electronics Corporation Hybrid CATV scrambling system
CA1292056C (en) * 1987-09-07 1991-11-12 Masatoshi Tanaka Video signal scrambling system
US4914694A (en) * 1988-04-11 1990-04-03 Eidak Corporation Modifying a television signal to inhibit recording/reproduction
US4916736A (en) * 1988-06-07 1990-04-10 Macrovision Corporation Method and apparatus for encrypting and decrypting time domain signals
GB8820103D0 (en) * 1988-08-24 1988-11-16 Screen Electronics Ltd Device & method
US5058157A (en) * 1989-09-06 1991-10-15 Macrovision Corporation Method and apparatus for encrypting and decrypting time domain signals
US5003590A (en) * 1989-12-18 1991-03-26 Eidak Corporation Encoding an optical video disc to inhibit video tape recording
SE466727B (sv) * 1991-04-04 1992-03-23 Persson Bjoern Tv-signaloeverfoerande betal-tv-system
US5212723A (en) * 1991-08-08 1993-05-18 Macrovision Corp. Burst phase correction system for video descrambling
JPH07193804A (ja) * 1991-11-15 1995-07-28 Pioneer Electron Corp 映像スクランブル方式およびその装置
US5590194A (en) * 1994-08-09 1996-12-31 Macrovision Corporation Method of and apparatus for scrambling a video signal with full network transmission and recording capability
US6334219B1 (en) 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
JP3072699B2 (ja) * 1994-10-25 2000-07-31 ソニー株式会社 ディジタル映像装置
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
US6570990B1 (en) 1998-11-13 2003-05-27 Lsi Logic Corporation Method of protecting high definition video signal
US7006633B1 (en) * 1999-07-16 2006-02-28 Global Encryption Standard Corporation Global encryption system
US7298849B2 (en) * 2001-06-29 2007-11-20 Intel Corporation Method and apparatus for simultaneous encryption and decryption of publicly distributed media
US8001374B2 (en) * 2005-12-16 2011-08-16 Lsi Corporation Memory encryption for digital video

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA642144A (en) * 1962-06-05 M. Roschke Erwin Subscription television system
CA750074A (en) * 1967-01-03 Bass Patrick Television systems
US2547598A (en) * 1947-09-13 1951-04-03 Zenith Radio Corp Subscription image transmission system and apparatus
US2677719A (en) * 1948-05-29 1954-05-04 Zenith Radio Corp Subscriber television system
NL89372C (es) * 1948-06-05
US2961481A (en) * 1954-12-30 1960-11-22 Hammond Secrecy television
US2972008A (en) * 1956-04-23 1961-02-14 Paramount Pictures Corp Coding methods and system
US3576391A (en) * 1968-06-26 1971-04-27 Rca Corp Television system for transmitting auxiliary information during the vertical blanking interval
CH518658A (de) * 1970-07-07 1972-01-31 Patelhold Patentverwaltungs Un Verfahren zur verschlüsselten Nachrichtenübermittlung durch zeitliche Vertauschung von Informationselementen
US3735027A (en) * 1970-11-02 1973-05-22 Skiatron Electronics Televisio Decoding scrambled television
GB1356193A (en) * 1971-03-04 1974-06-12 British Broadcasting Corp Processing and or distributing television signals
GB1382558A (en) * 1973-04-10 1975-02-05 Mullard Ltd Privacy transmission system
CH559483A5 (es) * 1973-06-12 1975-02-28 Patelhold Patentverwertung
CH581412A5 (es) * 1975-02-26 1976-10-29 Patelhold Patentverwertung
US4081826A (en) * 1975-05-15 1978-03-28 Sony Corporation Video time base corrector
CA1097794A (en) * 1975-08-08 1981-03-17 Harold B. Shutterly Secure television transmission system
GB1557741A (en) * 1977-04-28 1979-12-12 Teleglobe Pay Tv System Inc Subscription television system
GB1602119A (en) * 1977-11-18 1981-11-04 Shiu Hung Cheung Pay-tv system
DE2811221A1 (de) * 1978-03-15 1979-09-20 Tekade Felten & Guilleaume Verfahren und schaltungsanordnung zur wiedergewinnung der mittleren bildhelligkeit eines videosignals
FR2459595A1 (fr) * 1979-06-15 1981-01-09 Telediffusion Fse Systeme de television a controle d'acces utilisant une cle electronique variable
NO802740L (no) * 1979-10-18 1981-04-21 Crypto Ag Fremgangsmaate og anordning til kodet overfoering av informasjon
US4319273A (en) * 1979-10-26 1982-03-09 Rca Corporation Television signal with encoded synchronizing signals
US4338628A (en) * 1979-12-19 1982-07-06 Dynacom International, Inc. Scrambled video communication system
US4330794A (en) * 1979-12-31 1982-05-18 Gte Automatic Electric Laboratories, Inc. Multichannel subscription television system
US4335393A (en) * 1980-04-15 1982-06-15 Harris Video Systems, Inc. Method and system using sequentially encoded color and luminance processing of video type signals to improve picture quality
US4325079A (en) * 1980-06-09 1982-04-13 Little William D Secure video transmission system
US4398216A (en) * 1980-09-19 1983-08-09 Telease, Inc. Multiple signal transmission method and system, particularly for television
US4405942A (en) * 1981-02-25 1983-09-20 Telease, Inc. Method and system for secure transmission and reception of video information, particularly for television
CA1153103A (en) * 1981-03-19 1983-08-30 Northern Telecom Limited Scrambling and unscrambling video signals in a pay tv system
CA1150821A (en) * 1981-03-19 1983-07-26 Northern Telecom Limited Transmission of data with a video signal
US4466017A (en) * 1981-12-23 1984-08-14 Scientific-Atlanta, Inc. Sync suppression scrambling of television signals for subscription TV
US4636851A (en) * 1982-04-23 1987-01-13 Independent Broadcasting Authority Signal coding for secure transmission
CA1338158C (en) * 1982-07-15 1996-03-12 John D. Lowry Encryption and decryption (scrambling and unscrambling) of video signals
DE3479952D1 (en) * 1983-04-21 1989-11-02 Gen Instrument Corp Scrambling system for television video signal
FR2567349B1 (fr) * 1984-07-03 1986-12-12 Labo Electronique Physique Systeme de television de type mac adapte a la diffusion d'images au format 5/3, dispositif d'interface entre ce systeme et les recepteurs au format 4/3, et recepteur de television equipe d'un tel dispositif
US4652903A (en) * 1984-09-21 1987-03-24 Scientific Atlanta, Inc. Frequency generation for multiplexed analog component color television encoding and decoding
FR2575891B1 (fr) * 1985-01-08 1987-02-20 Labo Electronique Physique Dispositif de decodage et de dechiffrement de signaux ayant subi un codage de type mac et un chiffrement par permutation circulaire autour d'un ou de deux points de coupure, et dispositif de codage et de chiffrement fonctionnant de facon similaire

Also Published As

Publication number Publication date
CA1332976C (en) 1994-11-08
AU622802B2 (en) 1992-04-16
EP0223781A1 (en) 1987-06-03
EP0223781B1 (en) 1995-11-29
JPS62503067A (ja) 1987-12-03
WO1986007226A1 (en) 1986-12-04
DE3650444T2 (de) 1996-04-18
DE3650444D1 (de) 1996-01-11
ATE130994T1 (de) 1995-12-15
BR8606685A (pt) 1987-08-11
US4642688A (en) 1987-02-10
FI870237A0 (fi) 1987-01-21
FI85088B (fi) 1991-11-15
EP0223781A4 (en) 1988-10-20
AU5869386A (en) 1986-12-24
CN86103059A (zh) 1986-11-19
DK28987D0 (da) 1987-01-20
FI85088C (fi) 1992-02-25
DK28987A (da) 1987-03-05
ZA862838B (en) 1986-12-30
FI870237A (fi) 1987-01-21
AU5609290A (en) 1990-09-20
JPH07303248A (ja) 1995-11-14
CN1005237B (zh) 1989-09-20
JP2532819B2 (ja) 1996-09-11
JPH0666949B2 (ja) 1994-08-24

Similar Documents

Publication Publication Date Title
MX161937A (es) Mejoras en aparato para crear una senal de television y para incriptar y descriptar la senal al mismo tiempo y metodo para crear simultaneamente una senal de television normal
EP0531784A3 (en) Apparatus for encryption and decryption using split key
AU2587392A (en) Optical image encryption and decryption processes
NO20010227D0 (no) Fremgangsmåte og anordning for sikker kommunikasjon av informasjon mellom flere digitale, audiovisuelle anordninger
ES2107411T3 (es) Reproduccion de claves protegidas por utilizacion de datos de generacion de claves distribuidas.
GB9822543D0 (en) An apparatus and method for re-encrypting data
CA2224661A1 (en) Use of an encryption server for encrypting messages
AU1702900A (en) Data encrypting and decrypting apparatus and methods
GB0208858D0 (en) Method and apparatus for encrypting/decrypting data
FI941316A (fi) Menetelmä digitaalista informaatiota sisältävän bittivirran salaamiseksi ja salauksen purkamiseksi
DE69229346D1 (de) Dynamische verschlüsselungsschlüsselauswahl zur verschlüsselten funkübertragung
NO985275D0 (no) FremgangsmÕte for lagring og anvendelse av sensitiv informasjon i en sikkerhetsmodul, og en tilknyttet sikkerhetsmodul
HK1026314A1 (en) System for securely broadcasting data signals and system for decrypting encrypted data signals
NZ235123A (en) Decrypting and encrypting time domain signals
KR850700198A (ko) 암호 송수신기와 그 제어방법
JP2002305512A5 (es)
NZ510611A (en) A secure data transfer system
GB2346054A (en) Electronic publishing
DE59814257D1 (de) Argestellten nachricht
TH42009A3 (th) ระบบปกป้องการผลิตที่ใช้กับเนื้อหาที่เป็นการผลิตแบบดิจิตัล
JPH02230553A (ja) 磁気ディスク装置
KR970017193A (ko) 보안기능을 갖는 디지탈기록장치