ES2095826T3 - Cifrado por segmentacion de las lineas de informacion de video. - Google Patents

Cifrado por segmentacion de las lineas de informacion de video.

Info

Publication number
ES2095826T3
ES2095826T3 ES87308045T ES87308045T ES2095826T3 ES 2095826 T3 ES2095826 T3 ES 2095826T3 ES 87308045 T ES87308045 T ES 87308045T ES 87308045 T ES87308045 T ES 87308045T ES 2095826 T3 ES2095826 T3 ES 2095826T3
Authority
ES
Spain
Prior art keywords
video
video information
segments
horizontal lines
encrypted
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES87308045T
Other languages
English (en)
Inventor
Ron D Katznelson
Gordon Kent Walker
Paul Moroney
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cable Home Communication Corp
Engility LLC
Original Assignee
Cable Home Communication Corp
Titan Corp
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 Cable Home Communication Corp, Titan Corp filed Critical Cable Home Communication Corp
Application granted granted Critical
Publication of ES2095826T3 publication Critical patent/ES2095826T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Abstract

SE DESCRIBE UN SISTEMA PARA CIFRADO DE UNA SEÑAL DE VIDEO FORMADA POR VARIAS LINEAS HORIZONTALES, CADA UNA DE LAS CUALES INCLUYE UNA PARTE DE LA INFORMACION VIDEO (A, B, C) Y OTRA PARTE DE INFORMACION NO UTILIZABLE (48). EL SISTEMA DE CIFRADO INCLUYE UNA MEMORIA (10), MEDIOS (12) PARA ALMACENAMIENTO EN LA MEMORIA DE LA PARTE DE INFORMACION VIDEO DE CADA LINEA DE SEÑAL; Y MEDIOS (12) PARA FORMAR LINEAS HORIZONTALES CIFRADAS QUE SE PODRAN RECUPERAR EN DE LAS MENCIONADAS LINEAS DE INFORMACION DE VIDEO ALMACENADAS DENTRO DE UNA VARIEDAD DE SEGMENTOS (A1, A2; B1, B2; C1, C2) PRECEDIDOS POR UN SEGMENTO (42) DE NO VIDEO, Y SEPARADOS POR SEGMENTOS (44) DE NO VIDEO. LOS MEDIOS DE RECUPERACION INCLUYEN RECURSOS PARA LA VARIACION DE LAS RESPECTIVAS DURACIONES DE LOS SEGMENTOS DE INFORMACION VIDEO RECUPERADOS DE CADA UNA DE LAS LINEAS HORIZONTALES CIFRADAS DE ACUERDO CON UNA CLAVE DE CIFRADO CONTINUO (46); Y MEDIOS PARA VARIAR LA DURACION TOTAL DE LOS SEGMENTOS DE NO VIDEO (42, 44) PARA CADA UNA DE LAS LINEAS HORIZONTALES CIFRADAS DE ACUERDO CON UN MODELO DE TEMPORIZACION PREDETERMINADO. TAMBIEN SE MUESTRA UN SISTEMA COMPLEMENTARIO DE DESCIFRADO.
ES87308045T 1986-09-19 1987-09-11 Cifrado por segmentacion de las lineas de informacion de video. Expired - Lifetime ES2095826T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/909,763 US4736420A (en) 1986-09-19 1986-09-19 Video scrambling by segmenting video information lines

Publications (1)

Publication Number Publication Date
ES2095826T3 true ES2095826T3 (es) 1997-03-01

Family

ID=25427798

Family Applications (1)

Application Number Title Priority Date Filing Date
ES87308045T Expired - Lifetime ES2095826T3 (es) 1986-09-19 1987-09-11 Cifrado por segmentacion de las lineas de informacion de video.

Country Status (13)

Country Link
US (1) US4736420A (es)
EP (1) EP0260886B1 (es)
JP (1) JPS63107285A (es)
AT (1) ATE145106T1 (es)
AU (1) AU587346B2 (es)
CA (1) CA1328008C (es)
DE (1) DE3751944T2 (es)
DK (1) DK492387A (es)
ES (1) ES2095826T3 (es)
GR (1) GR3022472T3 (es)
IE (1) IE61357B1 (es)
NO (1) NO171659C (es)
NZ (1) NZ221795A (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
IL83549A (en) * 1987-08-16 1992-08-18 Yossi Matias Video scrambling apparatus and method based on space filling curves
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
DE3822354A1 (de) * 1988-07-01 1990-01-04 Siemens Ag Verfahren und anordnung zur verwuerfelung von bildsignalen
DE3828269A1 (de) * 1988-08-19 1990-02-22 Siemens Ag Verfahren zur verschluesselten uebertragung von bildfernsprechsignalen
FR2641153B1 (es) * 1988-12-23 1991-03-01 Europ Rech Electr Lab
FR2645324B1 (es) * 1989-04-04 1991-05-31 Europ Rech Electr Lab
DE3914466A1 (de) * 1989-05-02 1989-12-28 Eckart Dipl Ing Berling Digitale pcm- video-/ audio- uebertragung ueber monomoden- lwl integriert in freileitungen (erdseilen), leitungstrossen, energiekabeln (erd-see) zur netz-, kraftwerks-, verkehrs-, industrie- ueberwachung
US5058157A (en) * 1989-09-06 1991-10-15 Macrovision Corporation Method and apparatus for encrypting and decrypting time domain signals
US5014310A (en) * 1989-12-18 1991-05-07 General Instrument Corporation Video scrambling and descrambling by varying sequence of segments in adjacent video information lines
US5003590A (en) * 1989-12-18 1991-03-26 Eidak Corporation Encoding an optical video disc to inhibit video tape recording
CH682614A5 (fr) * 1990-02-21 1993-10-15 Kudelski Sa Procédé d'embrouillage et de désembrouillage d'un signal vidéo.
TR25746A (tr) * 1991-02-20 1993-09-01 Kudelski Sa BIR VIDEO SINYALINI KARISTIRMAK VE DüZELTMEK ICIN USUL
AU658014B2 (en) * 1991-11-19 1995-03-30 Macrovision Corporation Method and apparatus for scrambling and descrambling of video signals with edge fill
US5321748A (en) * 1992-07-02 1994-06-14 General Instrument Corporation, Jerrold Communications Method and apparatus for television signal scrambling using block shuffling
US5606612A (en) * 1994-07-25 1997-02-25 General Instrument Corporation, Jerrold Communications Division Method and apparatus for television signal scrambling using a line expansion technique
US5617475A (en) * 1994-11-18 1997-04-01 General Instrument Corporation, G.I. Communications Division Scrambling and descrambling of video signals using horizontal line combinations
US7457415B2 (en) * 1998-08-20 2008-11-25 Akikaze Technologies, Llc Secure information distribution system utilizing information segment scrambling
US6246551B1 (en) * 1998-10-20 2001-06-12 Ecrix Corporation Overscan helical scan head for non-tracking tape subsystems reading at up to 1X speed and methods for simulation of same
CA2403198A1 (en) * 2000-03-13 2001-09-20 Media Arts & Images Corporation Video data management, transmission, and control system and method employing distributed video segments microcasting
US7253791B2 (en) * 2003-11-13 2007-08-07 International Business Machines Corporation Selective viewing enablement system

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2912486A (en) * 1955-01-12 1959-11-10 Skiatron Elect & Tele Subscription television system
US2972008A (en) * 1956-04-23 1961-02-14 Paramount Pictures Corp Coding methods and system
CA1097794A (en) * 1975-08-08 1981-03-17 Harold B. Shutterly Secure television transmission system
FR2330236A1 (fr) * 1975-11-03 1977-05-27 France Etat Un procede de cryptage et de decryptage d'emissions de television et des circuits mettant en oeuvre ce procede
FR2431809A1 (fr) * 1978-07-20 1980-02-15 Telediffusion Fse Procedes et dispositifs de brouillage et de debrouillage pour images de television
CA1182555A (en) * 1980-02-25 1985-02-12 Robert S. Block Method and system for secure transmission and reception of video information, particularly for television
GB2113940B (en) * 1981-04-28 1985-04-17 Elliott Bros Data transmission system
AU562395B2 (en) * 1981-09-10 1987-06-11 Sony Corporation Subscription television system
US4458268A (en) * 1982-01-08 1984-07-03 Zenith Radio Corporation Sync displacement scrambling
JPS59500694A (ja) * 1982-04-23 1984-04-19 インデペンデント・ブロ−ドキヤステイング・オ−ソリテイ 信号を確実に伝送するための信号コ−ド化装置
CA1338158C (en) * 1982-07-15 1996-03-12 John D. Lowry Encryption and decryption (scrambling and unscrambling) of video signals
US4575754A (en) * 1983-01-06 1986-03-11 Rca Corporation Video scrambler system
EP0123422A3 (en) * 1983-03-28 1985-04-03 Plessey Overseas Limited Apparatus for scrambling and unscrambling signals
US4563702A (en) * 1983-05-27 1986-01-07 M/A-Com Linkabit, Inc. Video signal scrambling and descrambling systems
US4594609A (en) * 1983-06-30 1986-06-10 Viewstar Inc. Scrambling system for television video signal

Also Published As

Publication number Publication date
NO171659C (no) 1993-04-14
JPH0461557B2 (es) 1992-10-01
EP0260886B1 (en) 1996-11-06
DK492387D0 (da) 1987-09-18
ATE145106T1 (de) 1996-11-15
DK492387A (da) 1988-03-20
JPS63107285A (ja) 1988-05-12
NO171659B (no) 1993-01-04
IE872526L (en) 1988-03-19
NO873900L (no) 1988-03-21
GR3022472T3 (en) 1997-05-31
NZ221795A (en) 1989-08-29
NO873900D0 (no) 1987-09-17
EP0260886A3 (en) 1989-06-14
CA1328008C (en) 1994-03-22
EP0260886A2 (en) 1988-03-23
DE3751944T2 (de) 1997-05-07
IE61357B1 (en) 1994-11-02
AU7861787A (en) 1988-03-24
US4736420A (en) 1988-04-05
AU587346B2 (en) 1989-08-10
DE3751944D1 (de) 1996-12-12

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