Patents by Inventor Babak Tehranchi
Babak Tehranchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9990688Abstract: Methods, apparatus, and systems use embedded watermarks to determine whether the segments of a multimedia content has been rearranged. The embedded watermarks are recovered from the content and one or more attributes associated with the recovered watermarks are identified. A continuity of the content can then be assessed in accordance with the one or more attributes. The continuity assessment may be based on a variety of factors, including but not limited to a determined heartbeat of the recovered watermarks, a density, separation, location, or extent, of the recovered watermarks, as well as information associated with the watermarks, such as a stego key, channel bits, packet numbers, a fingerprint, or the like.Type: GrantFiled: July 10, 2017Date of Patent: June 5, 2018Assignee: Verance CorporationInventors: Babak Tehranchi, Rade Petrovic, Joseph M. Winograd, Dean Anthony Angelico
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Publication number: 20180089790Abstract: Methods, apparatus, and systems use embedded watermarks to determine whether the segments of a multimedia content has been rearranged. The embedded watermarks are recovered from the content and one or more attributes associated with the recovered watermarks are identified. A continuity of the content can then be assessed in accordance with the one or more attributes. The continuity assessment may be based on a variety of factors, including but not limited to a determined heartbeat of the recovered watermarks, a density, separation, location, or extent, of the recovered watermarks, as well as information associated with the watermarks, such as a stego key, channel bits, packet numbers, a fingerprint, or the like.Type: ApplicationFiled: July 10, 2017Publication date: March 29, 2018Inventors: Babak Tehranchi, Rade Petrovic, Joseph M. Winograd, Dean Anthony Angelico
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Patent number: 9704211Abstract: Methods, apparatus, and systems use embedded watermarks to determine whether the segments of a multimedia content has been rearranged. The embedded watermarks are recovered from the content and one or more attributes associated with the recovered watermarks are identified. A continuity of the content can then be assessed in accordance with the one or more attributes. The continuity assessment may be based on a variety of factors, including but not limited to a determined heartbeat of the recovered watermarks, a density, separation, location, or extent, of the recovered watermarks, as well as information associated with the watermarks, such as a stego key, channel bits, packet numbers, a fingerprint, or the like.Type: GrantFiled: January 26, 2017Date of Patent: July 11, 2017Assignee: Verance CorporationInventors: Babak Tehranchi, Rade Petrovic, Joseph M. Winograd, Dean Anthony Angelico
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Publication number: 20170140493Abstract: Methods, apparatus, and systems use embedded watermarks to determine whether the segments of a multimedia content has been rearranged. The embedded watermarks are recovered from the content and one or more attributes associated with the recovered watermarks are identified. A continuity of the content can then be assessed in accordance with the one or more attributes. The continuity assessment may be based on a variety of factors, including but not limited to a determined heartbeat of the recovered watermarks, a density, separation, location, or extent, of the recovered watermarks, as well as information associated with the watermarks, such as a stego key, channel bits, packet numbers, a fingerprint, or the like.Type: ApplicationFiled: January 26, 2017Publication date: May 18, 2017Inventors: Babak Tehranchi, Rade Petrovic, Joseph M. Winograd, Dean Anthony Angelico
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Patent number: 9648282Abstract: Systems and methods are provided for monitoring transmissions of media content (such as audio and audiovisual content) in order to obtain independent and objective data regarding the use of specific media content recordings or works within the transmissions. Processing and reporting of such data is provided in various ways to serve a variety of business needs. Methods for employing content identification technology to efficiently and automatically obtain reliable, accurate, and precise monitoring data are also disclosed. Various information products and services based on such monitoring systems are proposed.Type: GrantFiled: October 12, 2011Date of Patent: May 9, 2017Assignee: Verance CorporationInventors: Rade Petrovic, Babak Tehranchi, Kanaan Jemili, Joseph M. Winograd, Dean Angelico
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Patent number: 9558526Abstract: Methods, apparatus, and systems for signal continuity assessment using embedded watermarks are provided. The embedded watermarks are recovered from the content and one or more attributes associated with the recovered watermarks are identified. A continuity of the content can then be assessed in accordance with the one or more attributes. The continuity assessment may be based on a variety of factors, including but not limited to a determined heartbeat of the recovered watermarks, a density, separation, location, or extent, of the recovered watermarks, as well as information associated with the watermarks, such as a stego key, channel bits, packet numbers, a fingerprint, or the like.Type: GrantFiled: February 1, 2016Date of Patent: January 31, 2017Assignee: Verance CorporationInventors: Babak Tehranchi, Rade Petrovic, Joseph M. Winograd, Dean Anthony Angelico
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Publication number: 20160225116Abstract: Methods, apparatus, and systems for signal continuity assessment using embedded watermarks are provided. The embedded watermarks are recovered from the content and one or more attributes associated with the recovered watermarks are identified. A continuity of the content can then be assessed in accordance with the one or more attributes. The continuity assessment may be based on a variety of factors, including but not limited to a determined heartbeat of the recovered watermarks, a density, separation, location, or extent, of the recovered watermarks, as well as information associated with the watermarks, such as a stego key, channel bits, packet numbers, a fingerprint, or the like.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Inventors: Babak Tehranchi, Rade Petrovic, Joseph M. Winograd, Dean Anthony Angelico
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Patent number: 9251322Abstract: Methods, apparatus, and systems for signal continuity assessment using embedded watermarks are provided. The embedded watermarks are recovered from the content and one or more attributes associated with the recovered watermarks are identified. A continuity of the content can then be assessed in accordance with the one or more attributes. The continuity assessment may be based on a variety of factors, including but not limited to a determined heartbeat of the recovered watermarks, a density, separation, location, or extent, of the recovered watermarks, as well as information associated with the watermarks, such as a stego key, channel bits, packet numbers, a fingerprint, or the like.Type: GrantFiled: June 8, 2015Date of Patent: February 2, 2016Assignee: Verance CorporationInventors: Babak Tehranchi, Rade Petrovic, Joseph M. Winograd, Dean Anthony Angelico
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Patent number: 9153006Abstract: Methods and devices are provided to thwart analysis of a watermarking system by preventing analysis of watermarks in a host content. Upon receiving a content at a watermark embedding device, the content is analyzed to ascertain whether one or more test features are present in at least a first portion of the received content. When the analysis reveals that one or more test features are present, embedding of watermarks in at least the first portion of the received content is disabled. The test features of interest include a temporal, a spatial and/or a frequency characteristic such that, if a region of the content that includes test feature is embedded with a watermark, at least one characteristic of the embedded watermark is detectable upon analysis of that region. The test feature can, for example, approximate an impulse signal, a step function signal or a pure sinusoidal signal.Type: GrantFiled: August 15, 2014Date of Patent: October 6, 2015Assignee: Verance CorporationInventors: Rade Petrovic, Babak Tehranchi, Joseph M. Winograd, Kanaan Jemili
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Publication number: 20150269362Abstract: Methods, apparatus, and systems for signal continuity assessment using embedded watermarks are provided. The embedded watermarks are recovered from the content and one or more attributes associated with the recovered watermarks are identified. A continuity of the content can then be assessed in accordance with the one or more attributes. The continuity assessment may be based on a variety of factors, including but not limited to a determined heartbeat of the recovered watermarks, a density, separation, location, or extent, of the recovered watermarks, as well as information associated with the watermarks, such as a stego key, channel bits, packet numbers, a fingerprint, or the like.Type: ApplicationFiled: June 8, 2015Publication date: September 24, 2015Applicant: VERANCE CORPORATIONInventors: Babak Tehranchi, Rade Petrovic, Joseph M. Winograd, Dean Anthony Angelico
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Patent number: 9055239Abstract: Methods, apparatus, and systems for signal continuity assessment using embedded watermarks are provided. The embedded watermarks are recovered from the content and one or more attributes associated with the recovered watermarks are identified. A continuity of the content can then be assessed in accordance with the one or more attributes. The continuity assessment may be based on a variety of factors, including but not limited to a determined heartbeat of the recovered watermarks, a density, separation, location, or extent, of the recovered watermarks, as well as information associated with the watermarks, such as a stego key, channel bits, packet numbers, a fingerprint, or the like.Type: GrantFiled: July 19, 2007Date of Patent: June 9, 2015Assignee: Verance CorporationInventors: Babak Tehranchi, Rade Petrovic, Joseph M. Winograd, Dean Anthony Angelico
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Publication number: 20150036873Abstract: Methods and devices are provided to thwart analysis of a watermarking system by preventing analysis of watermarks in a host content. Upon receiving a content at a watermark embedding device, the content is analyzed to ascertain whether one or more test features are present in at least a first portion of the received content. When the analysis reveals that one or more test features are present, embedding of watermarks in at least the first portion of the received content is disabled. The test features of interest include a temporal, a spatial and/or a frequency characteristic such that, if a region of the content that includes test feature is embedded with a watermark, at least one characteristic of the embedded watermark is detectable upon analysis of that region. The test feature can, for example, approximate an impulse signal, a step function signal or a pure sinusoidal signal.Type: ApplicationFiled: August 15, 2014Publication date: February 5, 2015Inventors: Rade Petrovic, Babak Tehranchi, Joseph M. Winograd, Kanaan Jemili
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Publication number: 20150016663Abstract: Methods, apparatus and systems for embedding auxiliary information in encrypted host signals are provided. The present invention enables secure application of digital watermarks at any point in the transmission and/or distribution of digital content by enabling the insertion of a plurality of digital watermarks, without the knowledge of the encryption/decryption keys, into a digital host content that has been encrypted with an encryption key. The embedded watermarks persist throughout the content subsequent to the decryption of the content. The disclosed techniques are applicable to content that has been encrypted using a variety of different encryption techniques and algorithms, including stream ciphers, block ciphers, symmetric and asymmetric encryption algorithms. These methods are further adapted to enable the insertion of watermarks into a content that is compressed prior to encryption.Type: ApplicationFiled: July 11, 2014Publication date: January 15, 2015Inventors: Babak Tehranchi, Rade Petrovic
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Patent number: 8811655Abstract: Methods and devices are provided to thwart analysis of a watermarking system by preventing analysis of watermarks in a host content. Upon receiving a content at a watermark embedding device, the content is analyzed to ascertain whether one or more test features are present in at least a first portion of the received content. When the analysis reveals that one or more test features are present, embedding of watermarks in at least the first portion of the received content is disabled. The test features of interest include a temporal, a spatial and/or a frequency characteristic such that, if a region of the content that includes test feature is embedded with a watermark, at least one characteristic of the embedded watermark is detectable upon analysis of that region. The test feature can, for example, approximate an impulse signal, a step function signal or a pure sinusoidal signal.Type: GrantFiled: September 4, 2012Date of Patent: August 19, 2014Assignee: Verance CorporationInventors: Rade Petrovic, Babak Tehranchi, Joseph M. Winograd, Kanaan Jemili
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Patent number: 8806517Abstract: Systems and methods are provided for monitoring transmissions of media content (such as audio and audiovisual content) in order to obtain independent and objective data regarding the use of specific media content recordings or works within the transmissions. Processing and reporting of such data is provided in various ways to serve a variety of business needs. Methods for employing content identification technology to efficiently and automatically obtain reliable, accurate, and precise monitoring data are also disclosed. Various information products and services based on such monitoring systems are proposed.Type: GrantFiled: May 10, 2010Date of Patent: August 12, 2014Assignee: Verance CorporationInventors: Rade Petrovic, Babak Tehranchi, Kanaan Jemili, Joseph M. Winograd, Dean-Anthony Angelico
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Patent number: 8781967Abstract: Methods, apparatus and systems for embedding auxiliary information in encrypted host signals are provided. The present invention enables secure application of digital watermarks at any point in the transmission and/or distribution of digital content by enabling the insertion of a plurality of digital watermarks, without the knowledge of the encryption/decryption keys, into a digital host content that has been encrypted with an encryption key. The embedded watermarks persist throughout the content subsequent to the decryption of the content. The disclosed techniques are applicable to content that has been encrypted using a variety of different encryption techniques and algorithms, including stream ciphers, block ciphers, symmetric and asymmetric encryption algorithms. These methods are further adapted to enable the insertion of watermarks into a content that is compressed prior to encryption.Type: GrantFiled: July 7, 2006Date of Patent: July 15, 2014Assignee: Verance CorporationInventors: Babak Tehranchi, Rade Petrovic
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Patent number: 8745404Abstract: Methods and devices are provided for embedding auxiliary information in a host content in a manner that reduces memory, bandwidth and computational complexity of the embedding and transmission systems. One methodology relates to receiving a set of watermark embedding parameters produced at a pre-processing node by pre-processing the host content. The watermark embedding parameters enable embedding each of a plurality of host content segments with any one of at least two different logical values. To embed the auxiliary information, the host content is modified on a segment-by-segment basis using the set of watermark embedding parameters and in accordance with a control signal that designates one of the at least two logical values for embedding into a selected segment of the host content. The generation of watermark embedding parameters at a pre-processing node reduces storage, transmission and computational complexity of embedding operations that can occur at locations other than the pre-processing node.Type: GrantFiled: November 20, 2012Date of Patent: June 3, 2014Inventors: Rade Petrovic, Babak Tehranchi, Joseph M Winograd, Douglas Wong
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Patent number: 8538066Abstract: Methods and devices are provided to embed imperceptible watermarks into a host content and to subsequently extract embedded watermarks in a manner so as to achieve desired levels of robustness, transparency and security. For a particular host content, a first number of embedding opportunities are used to insert watermarks, which is less than a number of all embedding opportunities within the host content. Watermarks are extracted from a first number of watermark extraction opportunities, which is less than a number of all watermark extraction opportunities associated with the host content. The relationship between the first number of embedding opportunities, the first number of watermark extraction opportunities and the number of all watermark extraction opportunities is such that a circumvention attempt that overwrites watermarks at all extraction opportunities degrades perceptual quality of the host content below a desired perceptual quality level.Type: GrantFiled: September 4, 2012Date of Patent: September 17, 2013Assignee: Verance CorporationInventors: Rade Petrovic, Babak Tehranchi, Joseph M. Winograd, Kanaan Jemili
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Publication number: 20130011006Abstract: Methods and devices are provided to embed imperceptible watermarks into a host content and to subsequently extract embedded watermarks in a manner so as to achieve desired levels of robustness, transparency and security. For a particular host content, a first number of embedding opportunities are used to insert watermarks, which is less than a number of all embedding opportunities within the host content. Watermarks are extracted from a first number of watermark extraction opportunities, which is less than a number of all watermark extraction opportunities associated with the host content. The relationship between the first number of embedding opportunities, the first number of watermark extraction opportunities and the number of all watermark extraction opportunities is such that a circumvention attempt that overwrites watermarks at all extraction opportunities degrades perceptual quality of the host content below a desired perceptual quality level.Type: ApplicationFiled: September 4, 2012Publication date: January 10, 2013Applicant: VERANCE CORPORATIONInventors: Rade Petrovic, Babak Tehranchi, Joseph M. Winograd, Kanaan Jemili
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Publication number: 20130007462Abstract: Methods and devices are provided to thwart analysis of a watermarking system by preventing analysis of watermarks in a host content. Upon receiving a content at a watermark embedding device, the content is analyzed to ascertain whether one or more test features are present in at least a first portion of the received content. When the analysis reveals that one or more test features are present, embedding of watermarks in at least the first portion of the received content is disabled. The test features of interest include a temporal, a spatial and/or a frequency characteristic such that, if a region of the content that includes test feature is embedded with a watermark, at least one characteristic of the embedded watermark is detectable upon analysis of that region. The test feature can, for example, approximate an impulse signal, a step function signal or a pure sinusoidal signal.Type: ApplicationFiled: September 4, 2012Publication date: January 3, 2013Applicant: VERANCE CORPORATIONInventors: Rade Petrovic, Babak Tehranchi, Joseph M. Winograd, Kanaan Jemili