BR9912194A - Enhancement of concealment in the presence of fine-tuning deviation for various mixing techniques - Google Patents

Enhancement of concealment in the presence of fine-tuning deviation for various mixing techniques

Info

Publication number
BR9912194A
BR9912194A BR9912194-8A BR9912194A BR9912194A BR 9912194 A BR9912194 A BR 9912194A BR 9912194 A BR9912194 A BR 9912194A BR 9912194 A BR9912194 A BR 9912194A
Authority
BR
Brazil
Prior art keywords
fine
emphasis
signals
added
tuning
Prior art date
Application number
BR9912194-8A
Other languages
Portuguese (pt)
Inventor
Ronald Quan
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 BR9912194A publication Critical patent/BR9912194A/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
    • H04N7/171—Systems operating in the amplitude domain of the television signal
    • H04N7/1713—Systems operating in the amplitude domain of the television signal by modifying synchronisation signals
    • 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

Abstract

<B>APRIMORAMENTO DA OCULTAçãO NA PRESENçA DE DESVIO DE SINTONIA FINA PARA VáRIAS TéCNICAS DE MISTURA<D> Um método aprimorado e aparelho para menter a ocultação para um sinal misturado quando a pré-ênfase de freq³ência é utilizada para derrotar a mistura. A pré-enfase pode ser sintonizada com circuito de passagem elevada ou de pico. Contudo, mais comumente a pré-ênfase está disponível em aparelhos de televisão com controle de sintonia fina. Ao ajustar o controle de sintonia fina para provocar de propósito o desvio de sintonia para fora do centro, é gerado um efeito de pico que é utilizado para ir contra o sinal misturado. A aplicação revela uma versão que utiliza a de-ênfase para ir contra o efeito de pico. Em outra versão, sinais acrescentados na vizinhança do intervalo de branqueamento horizontal fazem com que o efeito de pico aumente nesses sinais acrescentados pelas bordas estáveis do sinal de vídeo. Como esses sinais acrescentados são modulados por posição, por exemplo, os circuitos de sincronização da televisão e os circuitos osciladores na horizontal farão com que os circuitos de varredura gerem modulação da posição. Assim, o acréscimo de um tipo específico de sinal faz com que o circuito de pico aumente os sinais acrescentados mais do que as outras partes do sinal de vídeo para obter sincronização.<B> HIDDEN IMPROVEMENT IN THE PRESENCE OF FINE TUNING DEVIATION FOR VARIOUS MIXING TECHNIQUES <D> An improved method and apparatus for mentoring concealment for a mixed signal when frequency pre-emphasis is used to defeat the mix. The pre-emphasis can be tuned with a high pass or peak circuit. However, more commonly, pre-emphasis is available on television sets with fine-tuning control. By adjusting the fine-tuning control to purposely cause the tuning shift out of the center, a peak effect is generated which is used to go against the mixed signal. The application reveals a version that uses de-emphasis to go against the peak effect. In another version, signals added in the vicinity of the horizontal bleaching interval cause the peak effect to increase in these signals added by the stable edges of the video signal. As these added signals are modulated by position, for example, the television's synchronization circuits and the horizontal oscillating circuits will cause the scanning circuits to generate position modulation. Thus, the addition of a specific type of signal causes the peak circuit to increase the added signals more than the other parts of the video signal to achieve synchronization.

BR9912194-8A 1998-07-22 1999-07-20 Enhancement of concealment in the presence of fine-tuning deviation for various mixing techniques BR9912194A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US9369498P 1998-07-22 1998-07-22
US10818298P 1998-11-11 1998-11-11
PCT/US1999/012388 WO2000005893A1 (en) 1998-07-22 1999-07-20 Enhancement consealment in the presence of the mistuning for var ious scrambling techniques

Publications (1)

Publication Number Publication Date
BR9912194A true BR9912194A (en) 2001-04-10

Family

ID=26787816

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9912194-8A BR9912194A (en) 1998-07-22 1999-07-20 Enhancement of concealment in the presence of fine-tuning deviation for various mixing techniques

Country Status (4)

Country Link
AU (1) AU5203499A (en)
BR (1) BR9912194A (en)
TW (1) TW424403B (en)
WO (1) WO2000005893A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU658014B2 (en) * 1991-11-19 1995-03-30 Macrovision Corporation Method and apparatus for scrambling and descrambling of video signals with edge fill
WO1998042130A1 (en) * 1997-03-17 1998-09-24 Macrovision Corporation Method and apparatus for adaptively enhancing a scrambled television signal

Also Published As

Publication number Publication date
AU5203499A (en) 2000-02-14
WO2000005893A1 (en) 2000-02-03
TW424403B (en) 2001-03-01
WO2000005893A9 (en) 2000-09-14

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 16A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2315 DE 19-05-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.