Patents by Inventor Brad Allen Medford
Brad Allen Medford 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: 9554180Abstract: A system includes a converter to receive a receiving a satellite signal at first transport frequencies and to convert the satellite signal to second transport frequencies and a processor. The processor removes a radio frequency portion from the satellite signal without altering a sequence of media contents of a moving picture experts group portion of the satellite signal and without altering a quality of the media contents of the moving picture experts group portion. The processor determines whether the media contents include an error and corrects the error in the moving picture experts group portion with error correction data of the satellite signal. The processor encrypts the media contents to produce an encrypted digital moving picture experts group transport stream signal. The processor also sends the encrypted digital moving picture experts group transport stream signal to a modulator.Type: GrantFiled: April 26, 2013Date of Patent: January 24, 2017Assignee: AT&T Intellectual Property I, L.P.Inventors: Brad Allen Medford, Ahmad Ansari, Dinesh Nadarajah
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Patent number: 8776153Abstract: A system for transporting content to subscriber premises includes a centralized content repository, a subscriber unit, and a network connecting the subscriber unit and repository. The content can be video, image, or other files and the network can include a digital subscriber line (DSL) link. The repository stores higher quality parts of decomposed content files. The subscriber unit locally stores lower quality parts of the content files corresponding to the higher quality parts in the repository. The lower quality parts can be downloaded to the subscriber unit during off-peak hours. During operation, a subscriber selects a locally stored file. In response to the selection, the repository downloads at least one of the higher quality parts corresponding to the selected file to be combined with one of the lower quality parts stored by the subscriber unit for real-time presentation of the content.Type: GrantFiled: April 25, 2001Date of Patent: July 8, 2014Assignee: AT&T Intellectual Property I, LPInventors: Ahmad Ansari, John Robert Erickson, Pierre Costa, Brad Allen Medford
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Patent number: 8732771Abstract: Systems and methods for providing direct broadcast satellite (DBS) and digital subscriber line (DSL) video services to multiple display devices are disclosed. Generally the disclosed system receives a plurality of DBS channels and DSL content. The system receives a first user-initiated video selection and generates a first television signal based on the first user-initiated video selection. The first television signal combines video from at least one DBS channel and video from DSL content for simultaneously displaying at least a portion of the video from at least one DBS channel and at least a portion of the video from the DSL content on a display device. The first television signal is then transmitted to a first display device. Additionally, the system receives a second user-initiated video selection, generates a second television signal based on the second user-initiated video selection, and transmits the second television signal to a second display device.Type: GrantFiled: July 9, 2007Date of Patent: May 20, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Ahmad Ansari, Brad Allen Medford, Russell William White, David Bruce Hartman
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Patent number: 8644393Abstract: A single compression engine transmits first and second discrete cosine transform (DCT)-encoded signals. The first DCT-encoded signal uses at most t coefficient bits to represent each of a plurality of DCT coefficients. The second DCT-encoded signal uses at most u coefficient bits, where u is less than t, to represent each of the plurality of DCT coefficients.Type: GrantFiled: September 14, 2012Date of Patent: February 4, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Brad Allen Medford, Ahmad Ansari, Pierre Costa, John Robert Erickson
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Patent number: 8453183Abstract: A system and method of processing a satellite signal is disclosed. In a particular embodiment, the method includes receiving a satellite signal at a receiver, where the satellite signal includes a Moving Picture Experts Group (MPEG) portion and a radio frequency (RF) portion. The method also includes decoding the satellite signal to produce a digital MPEG transport stream signal that includes the MPEG portion, by removing the RF portion from the satellite signal without substantially altering the MPEG portion. The method also includes transmitting the digital MPEG transport stream signal to a vestigial sideband (VSB) modulator, where the VSB modulator transmodulates the digital MPEG transport stream signal to a VSB signal.Type: GrantFiled: January 23, 2006Date of Patent: May 28, 2013Assignee: AT&T Intellectual Property I, L.P.Inventors: Brad Allen Medford, Ahmad Ansari, Dinesh Nadarajah
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Publication number: 20130070840Abstract: A single compression engine transmits first and second discrete cosine transform (DCT)-encoded signals. The first DCT-encoded signal uses at most t coefficient bits to represent each of a plurality of DCT coefficients. The second DCT-encoded signal uses at most u coefficient bits, where u is less than t, to represent each of the plurality of DCT coefficients.Type: ApplicationFiled: September 14, 2012Publication date: March 21, 2013Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Brad Allen Medford, Ahmad Ansari, Pierre Costa, John Robert Erickson
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Patent number: 8352979Abstract: Methods and apparatus are disclosed to broadcast advanced television system committee (ATSC) video in switched digital video (SDV) systems. An example SDV broadcast method includes de-multiplexing at least one program stream from at least one of a plurality of multiple program transport streams (MPTSs), and connecting at least one program stream to a SDV broadcast engine.Type: GrantFiled: April 22, 2005Date of Patent: January 8, 2013Assignee: AT&T Intellectual Property I, L.P.Inventors: Brad Allen Medford, Debra Ann Phillips, Vernon Daniel Reed
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Patent number: 8279934Abstract: A single compression engine transmits first and second discrete cosine transform (DCT)-encoded signals. The first DCT-encoded signal uses at most t coefficient bits to represent each of a plurality of DCT coefficients. The second DCT-encoded signal uses at most u coefficient bits, where u is less than t, to represent each of the plurality of DCT coefficients.Type: GrantFiled: February 26, 2007Date of Patent: October 2, 2012Assignee: AT&T Intellectual Property I, L.P.Inventors: Brad Allen Medford, Ahmad Ansari, Pierre Costa, John Robert Erickson
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Patent number: 7849384Abstract: The present disclosure is directed to a system and method of correcting video data errors. In a particular embodiment, the method includes receiving a stream of data packets at a re-generator of an Internet Protocol (IP) video transport stream. The stream of data packets includes a plurality of IP media packets and a plurality of forward error correction (FEC) packets. The method also includes determining an error profile of an error within the plurality of IP media packets. The method includes identifying one of the plurality of FEC packets, where the identified FEC packet is associated with an error correction code corresponding to the error profile. The method also includes selecting an inverse FEC function from a plurality of inverse FEC functions. The selected inverse FEC function corresponds to the identified FEC packet.Type: GrantFiled: July 8, 2009Date of Patent: December 7, 2010Assignee: AT&T Intellectual Property I, L.P.Inventors: Pierre Costa, Ahmad Ansari, David B. Hartman, Brad Allen Medford
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Publication number: 20090271683Abstract: The present disclosure is directed to a system and method of correcting video data errors. In a particular embodiment, the method includes receiving a stream of data packets at a re-generator of an Internet Protocol (IP) video transport stream. The stream of data packets includes a plurality of IP media packets and a plurality of forward error correction (FEC) packets. The method also includes determining an error profile of an error within the plurality of IP media packets. The method includes identifying one of the plurality of FEC packets, where the identified FEC packet is associated with an error correction code corresponding to the error profile. The method also includes selecting an inverse FEC function from a plurality of inverse FEC functions. The selected inverse FEC function corresponds to the identified FEC packet.Type: ApplicationFiled: July 8, 2009Publication date: October 29, 2009Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Pierre Costa, Ahmad Ansari, David B. Hartman, Brad Allen Medford
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Patent number: 7577898Abstract: The present disclosure is directed to a system and method of correcting video data errors. In a particular embodiment, the method includes receiving a plurality of Internet Protocol (IP) video data packets at a generator of a video acquisition system. The method also includes calculating a first error correction code corresponding to a first error profile and generating a first forward error correction (FEC) packet to produce the first error correction code. The method also includes calculating a second error correction code corresponding to a second error profile and generating a second FEC packet to produce the second error correction code.Type: GrantFiled: April 10, 2006Date of Patent: August 18, 2009Assignee: AT&T Intellectual Property I, L.P.Inventors: Pierre Costa, Ahmad Ansari, David B. Hartman, Brad Allen Medford
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Patent number: 7260825Abstract: Each of a plurality of remote control devices receives user-initiated video selections of any of direct broadcast satellite (DBS) channels, digital subscriber line (DSL) video content, and combinations of DBS channels and DSL video content. Based on the selections, each of a plurality of video processing modules is responsive to a corresponding one of the remote control devices to request any of a DBS channel, DSL video content, and a combination of a DBS channel and DSL video content, and to generate a television signal based thereon. A DBS distribution module simultaneously receives and distributes all DBS channels requested by the video processing modules. A DSL modem receives any DSL video content requested by the video processing modules. A networking module distributes the DSL video content to those of the video processing modules requesting same.Type: GrantFiled: July 8, 2002Date of Patent: August 21, 2007Assignee: SBC Properties, L.P.Inventors: Ahmad Ansari, Brad Allen Medford, Russell William White, David Bruce Hartman
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Patent number: 7197077Abstract: A single compression engine determines a plurality of discrete cosine transform (DCT) coefficients based on a discrete cosine transform of a plurality of blocks of data. The single compression engine provides first and second DCT-encoded signals. The first DCT-encoded signal uses at most t coefficient bits to represent each of the DCT coefficients. The second DCT-encoded signal uses at most u coefficient bits, where u is less than t, to represent each of the DCT coefficients.Type: GrantFiled: December 20, 2001Date of Patent: March 27, 2007Assignee: SBC Technologies Resources, Inc.Inventors: Brad Allen Medford, Ahmad Ansari, Pierre Costa, John Robert Erickson
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Publication number: 20040006769Abstract: Each of a plurality of remote control devices receives user-initiated video selections of any of direct broadcast satellite (DBS) channels, digital subscriber line (DSL) video content, and combinations of DBS channels and DSL video content. Based on the selections, each of a plurality of video processing modules is responsive to a corresponding one of the remote control devices to request any of a DBS channel, DSL video content, and a combination of a DBS channel and DSL video content, and to generate a television signal based thereon. A DBS distribution module simultaneously receives and distributes all DBS channels requested by the video processing modules. A DSL modem receives any DSL video content requested by the video processing modules. A networking module distributes the DSL video content to those of the video processing modules requesting same.Type: ApplicationFiled: July 8, 2002Publication date: January 8, 2004Inventors: Ahmad Ansari, Brad Allen Medford, Russell William White, David Bruce Hartman
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Publication number: 20030118098Abstract: A single compression engine determines a plurality of discrete cosine transform (DCT) coefficients based on a discrete cosine transform of a plurality of blocks of data. The single compression engine provides first and second DCT-encoded signals. The first DCT-encoded signal uses at most t coefficient bits to represent each of the DCT coefficients. The second DCT-encoded signal uses at most u coefficient bits, where u is less than t, to represent each of the DCT coefficients.Type: ApplicationFiled: December 20, 2001Publication date: June 26, 2003Inventors: Brad Allen Medford, Ahmad Ansari, Pierre Costa, John Robert Erickson
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Publication number: 20020170063Abstract: A system for transporting content to subscriber premises includes a centralized content repository, a subscriber unit, and a network connecting the subscriber unit and repository. The content can be video, image, or other files and the network can include a digital subscriber line (DSL) link. The repository stores higher quality parts of decomposed content files. The subscriber unit locally stores lower quality parts of the content files corresponding to the higher quality parts in the repository. The lower quality parts can be downloaded to the subscriber unit during off-peak hours. During operation, a subscriber selects a locally stored file. In response to the selection, the repository downloads at least one of the higher quality parts corresponding to the selected file to be combined with one of the lower quality parts stored by the subscriber unit for real-time presentation of the content.Type: ApplicationFiled: April 25, 2001Publication date: November 14, 2002Applicant: SBC Technology Resources IncInventors: Ahmad Ansari, John Robert Erickson, Pierre Costa, Brad Allen Medford