AR015202A1 - METHOD AND APPLIANCE TO IMPROVE THE EFFECT OF CODING A VIDEO SIGNAL - Google Patents

METHOD AND APPLIANCE TO IMPROVE THE EFFECT OF CODING A VIDEO SIGNAL

Info

Publication number
AR015202A1
AR015202A1 ARP980106425A AR015202A1 AR 015202 A1 AR015202 A1 AR 015202A1 AR P980106425 A ARP980106425 A AR P980106425A AR 015202 A1 AR015202 A1 AR 015202A1
Authority
AR
Argentina
Prior art keywords
coding
modified
video signal
improve
order
Prior art date
Application number
Other languages
Spanish (es)
Original Assignee
Macrovision 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 Macrovision Corp filed Critical Macrovision Corp
Publication of AR015202A1 publication Critical patent/AR015202A1/en

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
    • H04N7/1693—Systems operating in the time domain of the television signal by displacing synchronisation signals relative to active picture signals or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Television Signal Processing For Recording (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

Un método y aparato para mejorar el efecto de codificacion de una senal de video, donde las senales de video son codificadas mediante modulaciones oconmutaciones de posicion entre dos tipos de impulsos de sincronizacion horizontal modificados. Estosimpulsos horizontales modificados son modulados oconmutados a una velocidad que produce una imagen de desgarro sin entrelazamiento cuando es observada por un televidente no autorizado, por medio de lo cual,la invencion logra un mayor encubrimientoen comparacion con el arte previo. El proceso de codificacion modificado también puede adaptarse a fin de lograrartefactos CAG (Control Automático de Ganancia) de sintonizador más bajo. Al agregarse senales de sincronizacion vertical falsas y con elus o estratégico deimpulsos de sincronizacion horizontales dobles o multiples por línea del televisor, los televisores modernos que utilizan circuitos de conteo también sonafectados verticalmente a fin de mejorar los efectos de encubrimiento.A method and apparatus for improving the coding effect of a video signal, where the video signals are encoded by modulations or position switches between two types of modified horizontal synchronization pulses. These modified horizontal pulses are modulated or switched at a speed that produces a tear image without entanglement when observed by an unauthorized viewer, whereby the invention achieves greater concealment compared to the prior art. The modified coding process can also be adapted in order to achieve lower tuner CAG (Automatic Gain Control). By adding false vertical synchronization signals and with elus or strategic double or multiple horizontal synchronization pulses per TV line, modern televisions that use counting circuits are also affected vertically in order to improve the effects of concealment.

ARP980106425 1997-12-16 1998-12-16 METHOD AND APPLIANCE TO IMPROVE THE EFFECT OF CODING A VIDEO SIGNAL AR015202A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6981597P 1997-12-16 1997-12-16

Publications (1)

Publication Number Publication Date
AR015202A1 true AR015202A1 (en) 2001-04-18

Family

ID=22091388

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP980106425 AR015202A1 (en) 1997-12-16 1998-12-16 METHOD AND APPLIANCE TO IMPROVE THE EFFECT OF CODING A VIDEO SIGNAL

Country Status (5)

Country Link
AR (1) AR015202A1 (en)
AU (1) AU1832499A (en)
BR (1) BR9813624B1 (en)
TW (1) TW401703B (en)
WO (1) WO1999031884A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8169467B2 (en) 2006-03-29 2012-05-01 Nvidia Corporation System, method, and computer program product for increasing an LCD display vertical blanking interval
US8872754B2 (en) 2006-03-29 2014-10-28 Nvidia Corporation System, method, and computer program product for controlling stereo glasses shutters
US7724211B2 (en) 2006-03-29 2010-05-25 Nvidia Corporation System, method, and computer program product for controlling stereo glasses shutters
US9094678B1 (en) 2010-09-29 2015-07-28 Nvidia Corporation System, method, and computer program product for inverting a polarity of each cell of a display device
US9094676B1 (en) 2010-09-29 2015-07-28 Nvidia Corporation System, method, and computer program product for applying a setting based on a determined phase of a frame
US9164288B2 (en) 2012-04-11 2015-10-20 Nvidia Corporation System, method, and computer program product for presenting stereoscopic display content for viewing with passive stereoscopic glasses

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0133190A1 (en) * 1983-08-01 1985-02-20 Payview Limited Encoding and decoding of a television signal
US4716588A (en) * 1985-10-29 1987-12-29 Payview Limited Addressable subscription television system having multiple scrambling modes
US5651065A (en) * 1995-03-09 1997-07-22 General Instrument Corporation Of Delaware Insertion of supplemental burst into video signals to thwart piracy and/or carry data

Also Published As

Publication number Publication date
BR9813624B1 (en) 2014-03-11
AU1832499A (en) 1999-07-05
WO1999031884A1 (en) 1999-06-24
BR9813624A (en) 2000-10-17
TW401703B (en) 2000-08-11

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Legal Events

Date Code Title Description
FG Grant; registration