Patents Assigned to Rovi Solutions Corporation
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Patent number: 7805056Abstract: A method and apparatus provides a modified color stripe video copy protection signal. Normally, prior color stripe video copy protection signals include a color burst signal in which all cycles of subcarrier have an incorrect (i.e., non-normal) phase, thereby to provide copy protection effects on a video recorder. To improve playability, the present application provides a modified color stripe video copy protection signal which has no effect on a TV set. This modified color stripe signal comprises a color burst envelope that has cycles of normal phase as well as cycles of non-normal phase. On selected video lines, the modified color stripe signal incorporates a color burst signal consisting of two or more segments, with each segment having a predetermined phase. In another embodiment, the modified color stripe signal includes an expanded duration color burst envelope.Type: GrantFiled: February 25, 2005Date of Patent: September 28, 2010Assignee: Rovi Solutions CorporationInventor: Ronald Quan
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Patent number: 7792293Abstract: In record or content control management systems, various selected reference, record control, copy protection or control information signals, or other signifiers, are used to identify control signals, for example, bits, to provide control of subsequent use of data, audio and video signals in the analog and digital domain. Method and apparatus are disclosed for modifying the effects of a content control system as well as for modifying an effect of a copy protection signal. To this end, the reference, record control, copy protection signals, or other control information signals, e.g., content control signals, may be modified to cause an erroneous or unintended reading subsequently of the reference or control signals which in turn correspondingly alters the control command of the record or content control system.Type: GrantFiled: May 6, 2005Date of Patent: September 7, 2010Assignee: Rovi Solutions CorporationInventor: Ronald Quan
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Patent number: 7788504Abstract: Subversive DSV (SDSV) sequences of data symbols having a large absolute value of DSV are extremely valuable in the copy protection of optical discs as they can induce uncorrectable read errors. However, very few SDSV sequences of data symbols can be found in multimodal codes such as Eight-to-Sixteen Modulation (ESM) utilised in DVDs. It is required to select data symbols, for encoding using a multimodal code, which are capable of forcing an encoder to produce at least one subversive sequence of code words. A possible code word for a data symbol is selected if the code word has a large absolute value of DSV and there are no alternative code words, or all alternative code words are equivalent, or all alternatives except one are ruled out by RLL rules.Type: GrantFiled: May 19, 2005Date of Patent: August 31, 2010Assignee: Rovi Solutions CorporationInventor: Carmen Laura Basile
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Patent number: 7784103Abstract: A copy protection system and method enabling storage of copy protection information separately from protected content is disclosed. One embodiment includes a mechanism for playing a recording medium, the recording medium having stored thereon a digital content file and a copy protection information file, the mechanism producing a digital content signal from the digital content file and a copy protection signal from the copy protection file; a digital to analog converter operatively connected to the mechanism for converting the digital content signal to an analog signal; a copy protection detector connected to the mechanism for detecting a copy protection trigger present in the digital content signal; and a signal modifier connected to the copy protection detector for modifying the analog signal to include the copy protection signal in response to detection of the copy protection trigger.Type: GrantFiled: October 19, 2004Date of Patent: August 24, 2010Assignee: Rovi Solutions CorporationInventors: John O. Ryan, Ronald Quan, James H. Salter
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Patent number: 7778420Abstract: In an exemplary embodiment, digital content is mastered as a combination of encrypted data and data processing operations that enable use in approved playback environments. Player devices having a processing environment compatible with the content's data processing operations are able to decrypt and play the content. Players can also provide content with basic functions, such as loading data from media, performing network communications, determining playback environment configuration, controlling decryption/playback, and/or performing cryptographic operations using the player's keys. These functions allow the content to implement and enforce its own security policies. If pirates compromise individual players or content titles, new content can be mastered with new security features that block the old attacks. A selective decryption capability can also be provided, enabling on-the-fly watermark insertion so that attacks can be traced back to a particular player.Type: GrantFiled: October 31, 2007Date of Patent: August 17, 2010Assignee: Rovi Solutions CorporationInventors: Paul Carl Kocher, Joshua Michael Jaffe, Benjamin Che-Ming Jun, Matthew Thomas Carter, Peter Kelley Pearson
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Patent number: 7768388Abstract: A system to convey user alert messages is disclosed. The system may have a alert service coupled between alert providers and a number of households. After receiving in the alert service an alert message from an alert provider, the alert service may alter the alert message to identify the household designated to receive the alert message. The alert service sends a notification to a home media system within the household designated to receive the alert message.Type: GrantFiled: December 27, 2005Date of Patent: August 3, 2010Assignee: Rovi Solutions CorporationInventors: Daniel Putterman, Gregory Peters, Richard Bullwinkle, Kim R. Dykeman, Brad Dietrich
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Patent number: 7765159Abstract: A computer network having a requesting node and a providing node permits data transfer therebetween when permitted by an authorizing node. Reports generated in response to authorizations and reports generated in response to data transfers are reconciled at a reconciliation node to improve the accuracy of payments collected and paid for use of the data. Such payments include copyright royalties for audio, video, and other works recorded in digital format.Type: GrantFiled: November 23, 2005Date of Patent: July 27, 2010Assignee: Rovi Solutions CorporationInventor: François-Xavier Nuttall
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Patent number: 7764790Abstract: A robust technique to prevent illicit copying of video information notwithstanding the use of image scaling. A watermark is embedded into the video signal (e.g., DVD's content or other video sources) at different scales (i.e., sizes). The watermark is maintained at each scale for a predetermined time duration that is sufficient to allow the detector circuit in a DVD-recorder, DVHS recorder, DVCR, or any other digital format recorder to detect, extract, and process information contained in the watermark. At the end of the predetermined time duration, the watermark is changed to a different scale preferably on a pseudo-random basis to ensure that each one of all the scales in a predetermined scaling range is achieved a predetermined number of times.Type: GrantFiled: November 7, 2003Date of Patent: July 27, 2010Assignee: Rovi Solutions CorporationInventor: John O. Ryan
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Patent number: 7760876Abstract: In an exemplary embodiment, digital content is mastered as a combination of encrypted data and data processing operations that enable use in approved playback environments. Player devices having a processing environment compatible with the content's data processing operations are able to decrypt and play the content. Players can also provide content with basic functions, such as loading data from media, performing network communications, determining playback environment configuration, controlling decryption/playback, and/or performing cryptographic operations using the player's keys. These functions allow the content to implement and enforce its own security policies. If pirates compromise individual players or content titles, new content can be mastered with new security features that block the old attacks. A selective decryption capability can also be provided, enabling on-the-fly watermark insertion so that attacks can be traced back to a particular player.Type: GrantFiled: October 15, 2007Date of Patent: July 20, 2010Assignee: Rovi Solutions CorporationInventors: Paul Carl Kocher, Joshua Michael Jaffe, Benjamin Che-Ming Jun, Matthew Thomas Carter, Peter Kelley Pearson
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Patent number: 7756272Abstract: In an exemplary embodiment, digital content is mastered as a combination of encrypted data and data processing operations that enable use in approved playback environments. Player devices having a processing environment compatible with the content's data processing operations are able to decrypt and play the content. Players can also provide content with basic functions, such as loading data from media, performing network communications, determining playback environment configuration, controlling decryption/playback, and/or performing cryptographic operations using the player's keys. These functions allow the content to implement and enforce its own security policies. If pirates compromise individual players or content titles, new content can be mastered with new security features that block the old attacks. A selective decryption capability can also be provided, enabling on-the-fly watermark insertion so that attacks can be traced back to a particular player.Type: GrantFiled: October 26, 2007Date of Patent: July 13, 2010Assignee: Rovi Solutions CorporationInventors: Paul Carl Kocher, Joshua Michael Jaffe, Benjamin Che-Ming Jun, Matthew Thomas Carter, Peter Kelley Pearson
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Patent number: 7755980Abstract: The more effective is the copy protection provided on a DVD, the greater is the likelihood that the copy protection will adversely interfere with legitimate uses of the disc. In a disc where the content is arranged in physical sectors, it is now proposed to provide subversive regions on the disc having a similar structure to genuine regions. A subversive region and a genuine region will each extend over one or more physical sectors. The subversive region will be provided with physical sector addresses which coincide with addresses of the genuine region. Navigational data will ensure that it is the genuine, rather than the subversive, region which will be accessed during normal play, but the subversive region will effectively hide the genuine region during copying.Type: GrantFiled: April 4, 2007Date of Patent: July 13, 2010Assignee: Rovi Solutions CorporationInventors: Carmen Laura Basile, Richard A. A. Heylen
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Patent number: 7734142Abstract: A modified Colorstripeâ„¢ copy protection process utilizes a basic anti-copy protection (ACP) signal that causes attenuation of a video signal, wherein, in one embodiment, the process modifies (lowers) the level of a front porch portion and adds an incorrect color signal (color burst) in the region of the sync tip. When an illegal copy is made, a pre-blanked end of line portion causes a TV set to trigger the color burst sample pulse ahead of time and cause the incorrect color signal in the sync tip region to be sampled. Thus, since the sync tip region has incorrect color phase or frequency, the resulting illegal copy will have enhanced color distortions. In other embodiments, other portions of the horizontal blanking interval are lowered in level and incorrect color bursts are added to a portion or portions of the back porch and/or a portion of the front porch.Type: GrantFiled: October 26, 2005Date of Patent: June 8, 2010Assignee: Rovi Solutions CorporationInventor: Ronald Quan