CA2051415A1 - Methode et appareil d'interdiction a temps de tenue variable - Google Patents

Methode et appareil d'interdiction a temps de tenue variable

Info

Publication number
CA2051415A1
CA2051415A1 CA2051415A CA2051415A CA2051415A1 CA 2051415 A1 CA2051415 A1 CA 2051415A1 CA 2051415 A CA2051415 A CA 2051415A CA 2051415 A CA2051415 A CA 2051415A CA 2051415 A1 CA2051415 A1 CA 2051415A1
Authority
CA
Canada
Prior art keywords
interdiction
headend
dwell time
oscillators
voltage controlled
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.)
Granted
Application number
CA2051415A
Other languages
English (en)
Other versions
CA2051415C (fr
Inventor
Lamar Edwin West, Jr.
David Paul Durand
Melvin Paulick
Guy Anthony Primiano
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.)
BLONDER TONGUE INVESTMENT Co
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2051415A1 publication Critical patent/CA2051415A1/fr
Application granted granted Critical
Publication of CA2051415C publication Critical patent/CA2051415C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/80—Jamming or countermeasure characterized by its function
    • H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
    • H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/41—Jamming having variable characteristics characterized by the control of the jamming activation or deactivation time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/166—Passage/non-passage of the television signal, e.g. jamming, band suppression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/14—Jamming or countermeasure used for a particular application for the transfer of light or images, e.g. for video-surveillance, for television or from a computer screen

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Vehicle Body Suspensions (AREA)
  • Paper (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

Un appareil de blocage (130) de la télévision par câble comprend une solution de déclenchement et de contrôle à microprocesseur (300) qui déclenche et contrôle un ou plusieurs oscillateurs à commande de tension agile en fréquence (341-344). Les oscillateurs à commande de tension (341-344) brouillent sélectivement la programmation payante non autorisée émise par une extrémité (100) vers un abonné particulier. Cette méthode de blocage comprend des étapes de génération et de mémorisation de mots de contrôle de la tension servant au fonctionnement des oscillateurs (341-344). qui concordent avec un facteur de brouillage sélectionné pour la tête d'émission pour la chaîne à brouillé et avec les données d'autorisation de la programmation payante adressables et mémorisées
CA002051415A 1990-02-06 1991-02-06 Methode et appareil d'interdiction a temps de tenue variable Expired - Fee Related CA2051415C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US47604190A 1990-02-06 1990-02-06
US476,041 1990-02-06

Publications (2)

Publication Number Publication Date
CA2051415A1 true CA2051415A1 (fr) 1991-08-07
CA2051415C CA2051415C (fr) 1998-04-07

Family

ID=23890258

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002051415A Expired - Fee Related CA2051415C (fr) 1990-02-06 1991-02-06 Methode et appareil d'interdiction a temps de tenue variable

Country Status (5)

Country Link
EP (1) EP0466917A4 (fr)
KR (1) KR100231088B1 (fr)
AU (1) AU636021B2 (fr)
CA (1) CA2051415C (fr)
WO (1) WO1991012694A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110012332A (zh) * 2019-04-17 2019-07-12 深圳蓝普视讯科技有限公司 一种基于宽色域高动态范围HDR技术的物理10Bit信息采集播放系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140633A (en) * 1991-03-22 1992-08-18 North American Philips Corporation Cable subscriber control device using shared jamming modules
US7433361B1 (en) 2003-05-20 2008-10-07 Mark Jeffrey Smith Wireless method for communication

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039954A (en) * 1975-05-27 1977-08-02 Oak Holland B.V. Signal distribution device for a cable television
US4434436A (en) * 1981-07-13 1984-02-28 Bruce Merrill Addressable premium channel obfuscation device for cable television systems
US4638357A (en) * 1984-01-20 1987-01-20 Home Box Office, Inc. Audio scrambler
JPS61139176A (ja) * 1984-12-10 1986-06-26 Pioneer Electronic Corp Ｃａｔｖの視聴制御装置
JPS61230487A (ja) * 1985-04-04 1986-10-14 Pioneer Electronic Corp Ｃａｔｖシステムの特定チヤンネル妨害波混入方式
US4912760A (en) * 1988-03-10 1990-03-27 Scientific Atlanta, Inc. Off-premises cable television channel interdiction method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110012332A (zh) * 2019-04-17 2019-07-12 深圳蓝普视讯科技有限公司 一种基于宽色域高动态范围HDR技术的物理10Bit信息采集播放系统

Also Published As

Publication number Publication date
KR920702159A (ko) 1992-08-12
WO1991012694A1 (fr) 1991-08-22
KR100231088B1 (ko) 1999-11-15
EP0466917A1 (fr) 1992-01-22
EP0466917A4 (en) 1992-09-16
AU636021B2 (en) 1993-04-08
AU7347491A (en) 1991-09-03
CA2051415C (fr) 1998-04-07

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20080206