DK492387A - System til forvraengning af et videosignal ved segmentering af videoinformationslinier - Google Patents

System til forvraengning af et videosignal ved segmentering af videoinformationslinier

Info

Publication number
DK492387A
DK492387A DK492387A DK492387A DK492387A DK 492387 A DK492387 A DK 492387A DK 492387 A DK492387 A DK 492387A DK 492387 A DK492387 A DK 492387A DK 492387 A DK492387 A DK 492387A
Authority
DK
Denmark
Prior art keywords
video
video information
horizontal lines
lines
segments
Prior art date
Application number
DK492387A
Other languages
English (en)
Other versions
DK492387D0 (da
Inventor
Ron D Katznelson
Gordon Kent Walker
Paul Moroney
Original Assignee
Ma Com Gov Systems
Cable Home Communication 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 Ma Com Gov Systems, Cable Home Communication Corp filed Critical Ma Com Gov Systems
Publication of DK492387D0 publication Critical patent/DK492387D0/da
Publication of DK492387A publication Critical patent/DK492387A/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
    • H04N7/169—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)
  • Color Television Systems (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Details Of Television Scanning (AREA)
  • Color Television Image Signal Generators (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Television Signal Processing For Recording (AREA)
DK492387A 1986-09-19 1987-09-18 System til forvraengning af et videosignal ved segmentering af videoinformationslinier DK492387A (da)

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 (2)

Publication Number Publication Date
DK492387D0 DK492387D0 (da) 1987-09-18
DK492387A true DK492387A (da) 1988-03-20

Family

ID=25427798

Family Applications (1)

Application Number Title Priority Date Filing Date
DK492387A DK492387A (da) 1986-09-19 1987-09-18 System til forvraengning af et videosignal ved segmentering af videoinformationslinier

Country Status (13)

Country Link
US (1) US4736420A (da)
EP (1) EP0260886B1 (da)
JP (1) JPS63107285A (da)
AT (1) ATE145106T1 (da)
AU (1) AU587346B2 (da)
CA (1) CA1328008C (da)
DE (1) DE3751944T2 (da)
DK (1) DK492387A (da)
ES (1) ES2095826T3 (da)
GR (1) GR3022472T3 (da)
IE (1) IE61357B1 (da)
NO (1) NO171659C (da)
NZ (1) NZ221795A (da)

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
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
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 (da) * 1988-12-23 1991-03-01 Europ Rech Electr Lab
FR2645324B1 (da) * 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
AU2001245651A1 (en) * 2000-03-13 2001-09-24 Comnet Media 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
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
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
NO873900D0 (no) 1987-09-17
DE3751944D1 (de) 1996-12-12
ES2095826T3 (es) 1997-03-01
JPH0461557B2 (da) 1992-10-01
CA1328008C (en) 1994-03-22
DK492387D0 (da) 1987-09-18
IE61357B1 (en) 1994-11-02
DE3751944T2 (de) 1997-05-07
GR3022472T3 (en) 1997-05-31
NZ221795A (en) 1989-08-29
EP0260886B1 (en) 1996-11-06
JPS63107285A (ja) 1988-05-12
EP0260886A2 (en) 1988-03-23
AU587346B2 (en) 1989-08-10
NO873900L (no) 1988-03-21
ATE145106T1 (de) 1996-11-15
US4736420A (en) 1988-04-05
IE872526L (en) 1988-03-19
NO171659B (no) 1993-01-04
EP0260886A3 (en) 1989-06-14
NO171659C (no) 1993-04-14
AU7861787A (en) 1988-03-24

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Legal Events

Date Code Title Description
A0 Application filed
AHB Application shelved due to non-payment