Assignee
MACROVISION CORP
US·132 granted patents·28 pending applications·6,094 citations·filing 1986–2009
Top patents by PatentIndex Score
160 records- 0199US5513260AMethod and apparatus for copy protection for various recording mediaMACROVISION CORP·Filed 1994·Granted Apr 30, 1996·415 cites·25 claims
- 0298US5739864AApparatus for inserting blanked formatted fingerprint data (source ID, time/date) in to a video signalMACROVISION CORP·Filed 1994·Granted Apr 14, 1998·149 cites·10 claims
- 0398US5659613AMethod and apparatus for copy protection for various recording media using a video finger printMACROVISION CORP·Filed 1995·Granted Aug 19, 1997·215 cites·10 claims
- 0498US5406626ARadio receiver for information dissemenation using subcarrierMACROVISION CORP·Filed 1993·Granted Apr 11, 1995·282 cites·21 claims
- 0598US5315448ACopy protection for hybrid digital video tape recording and unprotected source materialMACROVISION CORP·Filed 1993·Granted May 24, 1994·360 cites·49 claims
- 0696US5754649AVideo media security and tracking systemMACROVISION CORP·Filed 1997·Granted May 19, 1998·169 cites·2 claims
- 0796US4907093AMethod and apparatus for preventing the copying of a video programMACROVISION CORP·Filed 1988·Granted Mar 6, 1990·76 cites·52 claims
- 0895US7213228B2Methods and apparatus for implementing a remote application over a networkMACROVISION CORP·Filed 2003·Granted May 1, 2007·120 cites·23 claims
- 0995US6381747B1Method for controlling copy protection in digital video networksMACROVISION CORP·Filed 1997·Granted Apr 30, 2002·407 cites·52 claims
- 1095US5754648AVideo media security and tracking systemMACROVISION CORP·Filed 1997·Granted May 19, 1998·120 cites·15 claims
- 1195US5194965AMethod and apparatus for disabling anti-copy protection system in video signalsMACROVISION CORP·Filed 1990·Granted Mar 16, 1993·107 cites·17 claims
- 1295US4819098AMethod and apparatus for clustering modifications made to a video signal to inhibit the making of acceptable videotape recordingsMACROVISION CORP·Filed 1987·Granted Apr 4, 1989·120 cites·13 claims
- 1394US7492896B2Copy protection for video signal using added negative amplitude pulseMACROVISION CORP·Filed 2007·Granted Feb 17, 2009·13 cites·6 claims
- 1493US6931536B2Enhanced copy protection of proprietary material employing multiple watermarksMACROVISION CORP·Filed 2001·Granted Aug 16, 2005·84 cites·44 claims
- 1593US6018374AMethod and system for preventing the off screen copying of a video or film presentationMACROVISION CORP·Filed 1997·Granted Jan 25, 2000·228 cites·6 claims
- 1693US5130810AMethod and apparatus for processing a video signal so as to prohibit the making of acceptable videotape recordingsMACROVISION CORP·Filed 1986·Granted Jul 14, 1992·51 cites·15 claims
- 1792US7603022B2Networked personal video recording systemMACROVISION CORP·Filed 2003·Granted Oct 13, 2009·63 cites·21 claims
- 1892US6553127B1Method and apparatus for selective block processingMACROVISION CORP·Filed 1998·Granted Apr 22, 2003·170 cites·26 claims
- 1992US5668603AVideo finger print method and apparatusMACROVISION CORP·Filed 1996·Granted Sep 16, 1997·64 cites·13 claims
- 2091US7574691B2Methods and apparatus for rendering user interfaces and display information on remote client devicesMACROVISION CORP·Filed 2004·Granted Aug 11, 2009·41 cites·14 claims
- 2191US7298962B2Method and apparatus for reducing and restoring the effectiveness of a commercial skip systemMACROVISION CORP·Filed 2003·Granted Nov 20, 2007·31 cites·72 claims
- 2291US6826352B1Dynamic video copy protection systemMACROVISION CORP·Filed 2000·Granted Nov 30, 2004·47 cites·53 claims
- 2391US6501842B2Method and apparatus for modifying a video signal by back porch loweringMACROVISION CORP·Filed 2000·Granted Dec 31, 2002·26 cites·15 claims
- 2490US7706533B2Copy protection for video signal using narrowed horizontal synchronization signalsMACROVISION CORP·Filed 2007·Granted Apr 27, 2010·7 cites·10 claims
- 2590US7574723B2Home media networkMACROVISION CORP·Filed 2001·Granted Aug 11, 2009·99 cites·11 claims
- 2690US7050698B1Method and apparatus for synthesizing or modifying a copy protection signal using a lowered signal level portionMACROVISION CORP·Filed 2000·Granted May 23, 2006·38 cites·42 claims
- 2789US7352863B2Copy protection for video signal using narrowed horizontal synchronization signals and amplitude modulationMACROVISION CORP·Filed 2005·Granted Apr 1, 2008·6 cites·21 claims
- 2889US6842522B1Secure digital video disk and playerMACROVISION CORP·Filed 2000·Granted Jan 11, 2005·38 cites·19 claims
- 2989US5583936AVideo copy protection process enhancement to introduce horizontal and vertical picture distortionsMACROVISION CORP·Filed 1993·Granted Dec 10, 1996·67 cites·92 claims
- 3088US7620178B2Copy protection for video signal added pulsesMACROVISION CORP·Filed 2007·Granted Nov 17, 2009·8 cites·7 claims
- 3188US7609944B2Copy protection of optical discsMACROVISION CORP·Filed 2006·Granted Oct 27, 2009·14 cites·32 claims
- 3288US7457511B2Independent buffer positions for a networked personal video recording systemMACROVISION CORP·Filed 2003·Granted Nov 25, 2008·43 cites·21 claims
- 3388US7085380B2Method for modifying a copy protected video signal with a negative amplitude pulseMACROVISION CORP·Filed 2001·Granted Aug 1, 2006·18 cites·14 claims
- 3488US7039294B2Method and apparatus for modifying the effects of color burst modifications to a video signalMACROVISION CORP·Filed 2001·Granted May 2, 2006·27 cites·16 claims
- 3587US7702591B2System and methods providing secure delivery of licenses and contentMACROVISION CORP·Filed 2006·Granted Apr 20, 2010·16 cites·19 claims
- 3687US7051004B2System and methods providing secure delivery of licenses and contentMACROVISION CORP·Filed 2001·Granted May 23, 2006·50 cites·32 claims
- 3787US6999946B2Method for computer network operation providing basis for usage feesMACROVISION CORP·Filed 2001·Granted Feb 14, 2006·30 cites·31 claims
- 3887US6542609B1Method and apparatus for scrambling a high definition television signalMACROVISION CORP·Filed 2000·Granted Apr 1, 2003·33 cites·25 claims
- 3987US5748733AMethod and apparatus to reduce effects of certain copy protection purses within a video signalMACROVISION CORP·Filed 1996·Granted May 5, 1998·51 cites·23 claims
- 4087US5229735AWide frequency deviation voltage controlled crystal oscillator having plural parallel crystalsMACROVISION CORP·Filed 1992·Granted Jul 20, 1993·78 cites·57 claims
- 4186US7278169B2Controlling the downloading and recording of digital dataMACROVISION CORP·Filed 2006·Granted Oct 2, 2007·5 cites·4 claims
- 4285US7360252B1Method and apparatus for secure distribution of softwareMACROVISION CORP·Filed 2000·Granted Apr 15, 2008·62 cites·47 claims
- 4385US5633927AVideo copy protection process enhancement to introduce horizontal and vertical picture distortionsMACROVISION CORP·Filed 1995·Granted May 27, 1997·45 cites·12 claims
- 4485US5157510AMethod and apparatus for disabling anti-copy protection system in video signals using pulse narrowingMACROVISION CORP·Filed 1990·Granted Oct 20, 1992·78 cites·19 claims
- 4584US7236683B2Method and apparatus for providing or enhancing copy protection by adding selected negative-going and positive-going pulses in a video signal HBIMACROVISION CORP·Filed 2001·Granted Jun 26, 2007·22 cites·48 claims
- 4684US7124114B1Method and apparatus for determining digital A/V content distribution terms based on detected piracy levelsMACROVISION CORP·Filed 2000·Granted Oct 17, 2006·30 cites·73 claims
- 4784US5953417AMethod and apparatus for digitally removing or defeating effects of copy protection signals from a video signalMACROVISION CORP·Filed 1998·Granted Sep 14, 1999·60 cites·19 claims
- 4884US5784523AMethod and apparatus for defeating effects of color burst modifications to a video signalMACROVISION CORP·Filed 1997·Granted Jul 21, 1998·66 cites·62 claims
- 4983US7454120B2Methods and apparatus for client aggregation of television programming in a networked personal video recording systemMACROVISION CORP·Filed 2003·Granted Nov 18, 2008·21 cites·16 claims
- 5083US6889206B1Method for computer network operation providing basis for usage feesMACROVISION CORP·Filed 2000·Granted May 3, 2005·19 cites·15 claims
Showing the top 50 of 160 patent records by PatentIndex Score.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →