Patents by Inventor Ahmad Ansari
Ahmad Ansari 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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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: 8369412Abstract: A method comprises determining a plurality of time intervals Tp and Tn within a variable bit rate (VBR) representation of an image sequence. The time intervals Tp are those in which a number of blocks of information per unit time is greater than a baseline value. The time intervals Tn are those in which a number of blocks of information per unit time is less than the baseline value. A second representation of the image sequence is created in which some blocks of information Bp are removed from the time intervals Tp and interlaced with blocks of information Bn in the time intervals Tn to reduce a variation in a number of blocks of information per unit time between the time intervals Tp and Tn.Type: GrantFiled: March 10, 2009Date of Patent: February 5, 2013Assignee: AT&T Intellectual Property I, L.P.Inventors: Pierre Costa, Ahmad Ansari, John Robert Erickson
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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: 8218647Abstract: A method comprises determining a plurality of time intervals Tp and Tn within a variable bit rate (VBR) representation of an image sequence. The time intervals Tp are those in which a number of blocks of information per unit time is greater than a baseline value. The time intervals Tn are those in which a number of blocks of information per unit time is less than the baseline value. A second representation of the image sequence is created in which some blocks of information Bp are removed from the time intervals Tp and interlaced with blocks of information Bn in the time intervals Tn to reduce a variation in a number of blocks of information per unit time between the time intervals Tp and Tn.Type: GrantFiled: February 6, 2009Date of Patent: July 10, 2012Assignee: AT&T Intellectual Property I, L.P.Inventors: Pierre Costa, Ahmad Ansari, John Robert Erickson
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Patent number: 8209727Abstract: A system and method are disclosed for method and apparatus for distributing signals. A system that incorporates teachings of the present disclosure may include, for example, a communications interface (CI) (101 having a controller that manages a transceiver (102) coupled to a residential gateway (RG) (118) and one or more set top boxes (STBs) (116). The controller can be programmed to receive (202) a very high bit rate digital subscriber line (VDSL) signal, transmit (204, 208) the VDSL signal to the RG over a select one of a plurality of coaxial interfaces, and receive (210) an IP signal from the RG for distribution to the one or more STBs. Additional embodiments are disclosed.Type: GrantFiled: April 4, 2006Date of Patent: June 26, 2012Assignee: AT&T Intellectual Property I, LPInventors: Ahmad Ansari, Vernon Reed, Pierre Costa, David Hartman
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Patent number: 8144721Abstract: A system includes a broadcast overlay network including a ring topology. The ring topology includes a first network ring and a second network ring that is coupled to the first network ring via at least one cross-connect element. The ring topology is adapted to carry broadcast traffic from a network. The system also includes a digital subscriber line access multiplexer (DSLAM) having a line interface and a network interface. The network interface is in communication with the broadcast overlay network via the second network ring. The DSLAM is adapted to receive a request for a particular video channel from a customer premise via the line interface and to deliver the particular video channel from the network interface to the line interface.Type: GrantFiled: October 18, 2007Date of Patent: March 27, 2012Assignee: AT&T Intellectual Property 1, LPInventors: Albert Chungbor Wan, Ahmad Ansari, David Hartman, Mehrad Yasrebi
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Publication number: 20120007947Abstract: A system that incorporates teachings of the present disclosure may include, for example, a server having a controller to receive 3D image content with a plurality of left eye frames and a plurality of right eye frames, remove a portion of pixels from each left eye frame and from the corresponding right eye frame, combine remaining pixels from each left eye frame of the plurality of left eye frames with remaining pixels from the corresponding right eye frame of the plurality of right eye frames to form a plurality of transport frames where the combined remaining pixels form an alternating pattern of pixels based on either alternating rows of pixels or alternating columns of pixels from each left eye frame and the corresponding right eye frame, and encode the plurality of transport frames for delivery to a media processor. Other embodiments are disclosed.Type: ApplicationFiled: July 7, 2010Publication date: January 12, 2012Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: PIERRE COSTA, Ahmad Ansari
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Publication number: 20120005717Abstract: A system that incorporates teachings of the present disclosure may include, for example, a set top box having a controller to receive a single video stream comprising two-dimensional image content and a depth map of the two-dimensional image content, generate three-dimensional image content in real-time from the two-dimensional image content and the depth map where the three-dimensional image content is generated when a display device operably coupled with the set top box is determined to be capable of presenting the three-dimensional image content, and provide either the two-dimensional image content or the three-dimensional image content to the display device. Other embodiments are disclosed.Type: ApplicationFiled: June 30, 2010Publication date: January 5, 2012Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: AHMAD ANSARI, Pierre Costa
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Publication number: 20110088056Abstract: A system that incorporates teachings of the present disclosure may include, for example, a portable wireless High Definition Multimedia Interface (HDMI) accessory for a wireless communication system, including: an HDMI processor which receives an audio/video encrypted signal and sends out an audio/video stream; a wireless HDMI module which receives the audio/video stream from the HDMI processor and transmits the audio/video stream wirelessly; a housing assembly for carrying the HDMI processor and the wireless HDMI module; and a coupling member which is operative to be coupled to a media processor via a port. Other embodiments are disclosed.Type: ApplicationFiled: October 12, 2009Publication date: April 14, 2011Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.Inventor: AHMAD ANSARI
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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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Patent number: 7751388Abstract: A broadband communication channel access network comprises an Ethernet device disposed in a serving area interface. The Ethernet device serves as an Ethernet bridge for a neighborhood service area. The Ethernet device communicates with a plurality of customer premises modems in the neighborhood service area. An Ethernet switch disposed at a central office communicates with the Ethernet device via a fiber optic medium using an Internet Protocol over a second Ethernet standard. The Ethernet switch provides a packet data core network termination.Type: GrantFiled: January 4, 2007Date of Patent: July 6, 2010Assignee: AT&T Intellectual Property I, L.P.Inventors: Russell William White, Alicia Marie Russell, Ahmad Ansari, Weijing Chen, Stephen Mark Mueller, Dinesh Nadaralah, Chin Yuan
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Publication number: 20100077438Abstract: A system that incorporates teachings of the present disclosure may include, for example, a server having a controller to receive a request for media content from a set top box of an Internet Protocol Television System, perform a search of one or more storage devices associated with other set top boxes for the media content based at least in part on a user profile associated with the set top box where the other set top boxes are located remotely from the set top box, receive the media content, and adjust a format of the media content prior to delivery to the set top box based at least in part on the user profile. Other embodiments are disclosed.Type: ApplicationFiled: September 19, 2008Publication date: March 25, 2010Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.Inventor: Ahmad Ansari
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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: 7606218Abstract: A digital subscriber line access network comprises a remote Ethernet device disposed in a serving area interface. The remote Ethernet device serves as an Ethernet bridge for a neighborhood service area. The remote Ethernet device communicates with a plurality of customer premises modems in the neighborhood service area using an Internet Protocol over an Ethernet standard with a digital subscriber line physical layer. An Ethernet switch disposed at a central office communicates with the remote Ethernet device via a fiber optic medium using an Internet Protocol over a second Ethernet standard. The Ethernet switch provides a packet data core network termination.Type: GrantFiled: July 19, 2004Date of Patent: October 20, 2009Assignee: AT&T Intellectual Property 1, L.P.Inventors: Russell William White, Alicia Marie Russell, Ahmad Ansari, Weijing Chen, Stephen Mark Mueller, Dinesh Nadaralah, Chin Yuan
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Publication number: 20090225864Abstract: A method comprises determining a plurality of time intervals Tp and Tn within a variable bit rate (VBR) representation of an image sequence. The time intervals Tp are those in which a number of blocks of information per unit time is greater than a baseline value. The time intervals Tn are those in which a number of blocks of information per unit time is less than the baseline value. A second representation of the image sequence is created in which some blocks of information Bp are removed from the time intervals Tp and interlaced with blocks of information Bn in the time intervals Tn to reduce a variation in a number of blocks of information per unit time between the time intervals Tp and Tn.Type: ApplicationFiled: March 10, 2009Publication date: September 10, 2009Inventors: Pierre Costa, Ahmad Ansari, John Robert Erickson
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Patent number: 7580462Abstract: A method comprises determining a plurality of time intervals Tp and Tn within a variable bit rate (VBR) representation of an image sequence. The time intervals Tp are those in which a number of blocks of information per unit time is greater than a baseline value. The time intervals Tn are those in which a number of blocks of information per unit time is less than the baseline value. A second representation of the image sequence is created in which some blocks of information Bp are removed from the time intervals Tp and interlaced with blocks of information Bn in the time intervals Tn to reduce a variation in a number of blocks of information per unit time between the time intervals Tp and Tn.Type: GrantFiled: August 19, 2005Date of Patent: August 25, 2009Assignee: AT&T Intellectual Property 1, L.P.Inventors: Pierre Costa, Ahmad Ansari, John Robert Erickson
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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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Publication number: 20090190664Abstract: A method comprises determining a plurality of time intervals Tp and Tn within a variable bit rate (VBR) representation of an image sequence. The time intervals Tp are those in which a number of blocks of information per unit time is greater than a baseline value. The time intervals Tn are those in which a number of blocks of information per unit time is less than the baseline value. A second representation of the image sequence is created in which some blocks of information Bp are removed from the time intervals Tp and interlaced with blocks of information Bn in the time intervals Tn to reduce a variation in a number of blocks of information per unit time between the time intervals Tp and Tn.Type: ApplicationFiled: February 6, 2009Publication date: July 30, 2009Inventors: Pierre Costa, Ahmad Ansari, John Robert Erickson
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Patent number: 7539249Abstract: A method comprises determining a plurality of time intervals Tp and Tn within a variable bit rate (VBR) representation of an image sequence. The time intervals Tp are those in which a number of blocks of information per unit time is greater than a baseline value. The time intervals Tn are those in which a number of blocks of information per unit time is less than the baseline value. A second representation of the image sequence is created in which some blocks of information Bp are removed from the time intervals Tp and interlaced with blocks of information Bn in the time intervals Tn to reduce a variation in a number of blocks of information per unit time between the time intervals Tp and Tn.Type: GrantFiled: March 31, 2006Date of Patent: May 26, 2009Assignee: AT&T Intellectual Property 1, L.P.Inventors: Pierre Costa, Ahmad Ansari, John Robert Erickson
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Publication number: 20090116494Abstract: Society of Motion Picture and Television Engineers (SMPTE) video data is separated into first data and second data. A first signal is formed based on the first data. A second signal is formed based on the second data. The first signal is transported via a first Optical Carrier 3 (OC-3) channel. The second signal is transported via a second OC-3 channel.Type: ApplicationFiled: November 4, 2008Publication date: May 7, 2009Inventors: Pierre Costa, John Robert Erickson, Ahmad Ansari