AR004417A1 - Metodo y aparato para inhibir de realizar una copia aceptable de una senal de video grabada - Google Patents

Metodo y aparato para inhibir de realizar una copia aceptable de una senal de video grabada

Info

Publication number
AR004417A1
AR004417A1 ARP970100173A ARP970100173A AR004417A1 AR 004417 A1 AR004417 A1 AR 004417A1 AR P970100173 A ARP970100173 A AR P970100173A AR P970100173 A ARP970100173 A AR P970100173A AR 004417 A1 AR004417 A1 AR 004417A1
Authority
AR
Argentina
Prior art keywords
color
pal
sync burst
video signal
techniques
Prior art date
Application number
ARP970100173A
Other languages
English (en)
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27533382&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AR004417(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Macrovision Corp filed Critical Macrovision Corp
Publication of AR004417A1 publication Critical patent/AR004417A1/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
    • H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
    • H04N11/16—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation
    • H04N9/455—Generation of colour burst signals; Insertion of colour burst signals in colour picture signals or separation of colour burst signals from colour picture signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91321—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy protection control signal, e.g. a record inhibit signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91371—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video color burst signal being modified

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Television Signal Processing For Recording (AREA)
  • Studio Circuits (AREA)

Abstract

En el conocido proceso de franjas cromáticas para impedir la grabación de senales de video, la ráfaga de sincronización cromática presente en cada líneade video activo se modifica de manera que cada grabación de cinta de video posterior de lasenal de video muestre variaciones en la fidelidad cromáticaque aparecen como bandas o franjas molestas de error cromático. Este proceso de franja cromática se mejora mediante una combinación de modificación de fase dela ráfaga de sincronización cromática en sólo parte de la ráfaga de sincronización cromática.Se obtuvieron más mejoras mediante la incorporación detécnicas de ensanchado de la envolvente de ráfaga de sincronización cromática normal hacia el flanco posterior del sincronizador horizontal y hacia elcomienzo del video activo. Estas técnicas son útiles para mejorar el comportamiento del proceso de franja cromática en los sistemas cromáticos tantoNTSC como PAL. Otras mejoras en el sistema PAL mediante las cuales las modificaciones de fase se controlan de manera de evitar las perturbacionesal denominado impulso de ID de PAL. Mejoran la capacidad de reproducción de la senal de franja cromática en el formato PAL.
ARP970100173A 1996-01-16 1997-01-16 Metodo y aparato para inhibir de realizar una copia aceptable de una senal de video grabada AR004417A1 (es)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US1001596P 1996-01-16 1996-01-16
US1077996P 1996-01-29 1996-01-29
US1424696P 1996-03-26 1996-03-26
US2439396P 1996-06-28 1996-06-28
US2164596P 1996-07-12 1996-07-12

Publications (1)

Publication Number Publication Date
AR004417A1 true AR004417A1 (es) 1998-12-16

Family

ID=27533382

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP970100173A AR004417A1 (es) 1996-01-16 1997-01-16 Metodo y aparato para inhibir de realizar una copia aceptable de una senal de video grabada

Country Status (24)

Country Link
EP (3) EP1152611B1 (es)
JP (1) JP3567243B2 (es)
KR (1) KR100304040B1 (es)
CN (1) CN1109440C (es)
AR (1) AR004417A1 (es)
AT (3) ATE237901T1 (es)
AU (1) AU700936B2 (es)
BG (1) BG63588B1 (es)
BR (1) BR9612439A (es)
CA (1) CA2243280C (es)
CZ (1) CZ290419B6 (es)
DE (3) DE69627555T2 (es)
DK (3) DK1152611T3 (es)
ES (3) ES2169821T3 (es)
FI (1) FI981551A (es)
HK (1) HK1016393A1 (es)
HU (1) HU224851B1 (es)
IL (1) IL125263A0 (es)
MY (3) MY127595A (es)
NZ (1) NZ322723A (es)
PL (1) PL183576B1 (es)
PT (3) PT1152611E (es)
RU (1) RU2160971C2 (es)
WO (1) WO1997026759A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998043420A1 (en) * 1997-03-21 1998-10-01 Macrovision Corporation Method and apparatus for detecting modified color burst signals to prevent the copying of a video program
CN100435554C (zh) * 2003-06-13 2008-11-19 钰创科技股份有限公司 图像信号处理的相位增强导致减弱的相位回复方法及电路

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924453A1 (de) * 1979-06-18 1981-01-15 Walter Ing Grad Breu Verfahren und einrichtung zur herstellung kopiersicher bespielter videokassetten
DE3306174A1 (de) * 1983-02-23 1984-08-23 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Videokassette mit schutz gegen ueberspielung
US4577216A (en) * 1983-11-14 1986-03-18 Macrovision Method and apparatus for modifying the color burst to prohibit videotape recording
US5315448A (en) * 1993-03-18 1994-05-24 Macrovision Corporation Copy protection for hybrid digital video tape recording and unprotected source material
PL181205B1 (pl) * 1995-05-09 2001-06-29 Macrovision Corp Sposób uniemożliwienia sporządzenia zadowalającego zapisu wizyjnego sygnału wizji

Also Published As

Publication number Publication date
MY119421A (en) 2005-05-31
FI981551A0 (fi) 1996-11-05
KR19990077383A (ko) 1999-10-25
RU2160971C2 (ru) 2000-12-20
HUP0000391A2 (hu) 2000-06-28
PT1152611E (pt) 2003-09-30
PL183576B1 (pl) 2002-06-28
CZ290419B6 (cs) 2002-07-17
CZ215298A3 (cs) 1999-05-12
FI981551A (fi) 1998-08-19
HU224851B1 (en) 2006-03-28
DE69627905T2 (de) 2004-05-19
ATE237901T1 (de) 2003-05-15
PL327932A1 (en) 1999-01-04
KR100304040B1 (ko) 2001-11-22
EP1152611B1 (en) 2003-05-02
BG102615A (en) 1999-06-30
MY127596A (en) 2006-12-29
EP1152610A1 (en) 2001-11-07
CA2243280C (en) 2001-07-31
ES2195975T3 (es) 2003-12-16
EP0875116B1 (en) 2002-02-27
ES2192552T3 (es) 2003-10-16
ATE239340T1 (de) 2003-05-15
AU700936B2 (en) 1999-01-14
NZ322723A (en) 1999-02-25
DK0875116T3 (da) 2002-04-15
DE69627555D1 (de) 2003-05-22
BR9612439A (pt) 1999-07-13
AU7668896A (en) 1997-08-11
HK1016393A1 (en) 1999-10-29
ES2169821T3 (es) 2002-07-16
DE69627905D1 (de) 2003-06-05
CA2243280A1 (en) 1997-07-24
JP3567243B2 (ja) 2004-09-22
DK1152610T3 (da) 2003-07-21
CN1207850A (zh) 1999-02-10
EP1152610B1 (en) 2003-04-16
EP0875116A1 (en) 1998-11-04
DE69627555T2 (de) 2003-11-20
DE69619556T2 (de) 2002-08-22
BG63588B1 (bg) 2002-05-31
PT875116E (pt) 2002-08-30
CN1109440C (zh) 2003-05-21
MY127595A (en) 2006-12-29
EP1152611A1 (en) 2001-11-07
HUP0000391A3 (en) 2002-09-30
DE69619556D1 (de) 2002-04-04
IL125263A0 (en) 1999-03-12
ATE213891T1 (de) 2002-03-15
WO1997026759A1 (en) 1997-07-24
DK1152611T3 (da) 2003-07-21
PT1152610E (pt) 2003-09-30
JP2002506580A (ja) 2002-02-26

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