Patents by Inventor Dinesh Nadarajah

Dinesh Nadarajah 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).

  • Patent number: 8453183
    Abstract: 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: Grant
    Filed: January 23, 2006
    Date of Patent: May 28, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Brad Allen Medford, Ahmad Ansari, Dinesh Nadarajah
  • Patent number: 8412774
    Abstract: A method and system for multicasting video signals over a network. A standard definition (SD) picture-in-picture (PIP) multicast video signal is encoded from a video signal. A common network address is assigned to the SD PIP multicast video signal for both SD PIP video content and high definition (HD) video content.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: April 2, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Brad Medford, Dinesh Nadarajah
  • Patent number: 8384743
    Abstract: Techniques for linking and browsing media on a television (TV) are provided. A selected program, which is associated with a channel of the TV, is detected and additional content, which is associated with that channel and/or the selected program, is dynamically acquired from one or more external sources. The additional content is formatted as links and simultaneously presented within a display of the TV along with the selected program that continues to play on the TV. Furthermore, activation of any link results in the additional content being dynamically acquired and presented within the display.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: February 26, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Sreenivasa Gorti, Dinesh Nadarajah, Peter Lowrie
  • Patent number: 8358378
    Abstract: A system and method are disclosed for receiving a group of video channels at a client device, selecting a display set from the group of channels, and sending a communication to a display for displaying each channel in the display set in parallel wherein each one of the channels in the display set is displayed in one of a plurality of picture in picture (PIP) displays for a predetermined time.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: January 22, 2013
    Assignee: AT&T Intellectual Property I, LP
    Inventor: Dinesh Nadarajah
  • Publication number: 20120331558
    Abstract: A dynamic repository (either storing digital data content or pointers to stored digital data content) works in conjunction with a plurality of interfaces to manage digital content and digital rights policies associated with one or more users. Digital rights policies are unique to each user and such policies define access to digital content in the repository. The user's digital rights policy indicates the level of access a user has to digital content in the repository (e.g., the policy could indicate that the user has authorized access to a particular file for a period of seven days). The interfaces linked with the content repository are used to access and manipulate the digital data content (based upon each user's digital rights policy) and the digital rights policies stored in the content repository.
    Type: Application
    Filed: June 24, 2011
    Publication date: December 27, 2012
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Paul F. Van Vleck, Dinesh Nadarajah, David Patron, Michael F. Grannan
  • Patent number: 8209726
    Abstract: A satellite transponder switch (STS) maintains a table that maps set-top boxes (STBs) to carrier frequencies. The STS receives a first request from a first STB for a first transponder band and a second request from a second STB for a second transponder band. The STS receives contact from the first STB on a control channel upon power-up of the first STB and in response to the contact from the first STB, assigns a first carrier frequency to the first STB. The STS frequency shifts the first transponder band to a first carrier frequency assigned to the first STB and the second transponder band to a second carrier frequency assigned to the second STB. The STS outputs a signal that comprises the frequency-shifted first and second transponder bands to the first STB and the second STB. The frequency-shifted first and second transponder bands are separated by a separation band. A first carrier frequency of the signal is unique to the first STB and a second carrier frequency of the signal is unique to the second STB.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: June 26, 2012
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Dinesh Nadarajah, Ahmad C. Ansari
  • Publication number: 20120017255
    Abstract: A method includes buffering a plurality of video streams within a buffer of a video server and generating a unicast video output and a multicast video output at the buffer.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Applicant: AT&T Intellectual Property I, L.P.
    Inventor: Dinesh Nadarajah
  • Patent number: 8054849
    Abstract: A system and method for managing video content streams are disclosed. The method includes receiving a plurality of multicast video streams at a server and buffering each video stream within a memory at the server. The method also includes generating a multicast video output at the server and a unicast video output at the server.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: November 8, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Dinesh Nadarajah
  • Patent number: 8046491
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a communication device having a controller to request from an alternate communication device a log of subscribed content acquired by the alternate communication device from an alternate source, identify from the log a desired portion of the subscribed content, and transmit to the alternate communication device a peer-to-peer request for the desired portion of the subscribed content according to one or more available subscriptions. Additional embodiments are also disclosed.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: October 25, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Adam Klein, David Wolter, Dinesh Nadarajah, Rias Muhamed
  • Patent number: 7996503
    Abstract: A dynamic repository (either storing digital data content or pointers to stored digital data content) works in conjunction with a plurality of interfaces to manage digital content and digital rights policies associated with one or more users. Digital rights policies are unique to each user and such policies define access to digital content in the repository. The user's digital rights policy indicates the level of access a user has to digital content in the repository (e.g., the policy could indicate that the user has authorized access to a particular file for a period of seven days). The interfaces linked with the content repository are used to access and manipulate the digital data content (based upon each user's digital rights policy) and the digital rights policies stored in the content repository.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: August 9, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Paul F. Van Vleck, Dinesh Nadarajah, David Patron, Michael F. Grannan
  • Patent number: 7984477
    Abstract: There are provided a method, a system and machine-readable medium for encoding a video broadcast. The method includes obtaining one or more first compression settings for the video broadcast from an electronic program guide (EPG), the EPG associating the video broadcast with the one or more first compression settings. The method further includes compressing the video broadcast using the one or more first compression settings into a distribution broadcast. Yet further, the method includes distributing the distribution broadcast. There is also provided a method, system and machine readable medium to provide compression settings for encoding a video broadcast. The method includes inserting one or more compression settings into an electronic program guide (EPG) in association with the video broadcast based on a content type of the video broadcast. The method further includes distributing the EPG.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: July 19, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Dinesh Nadarajah, Brad A. Medford
  • Publication number: 20110167442
    Abstract: A system includes a signal-processing engine configured to generate a video data stream including a plurality of data packets based on a received video signal. A first subset of the plurality of data packets is usable to generate a video display of content having a first quality and all of the plurality of data packets are usable to generate a second video display of the content having a second quality. The second quality is higher than the first quality. The signal-processing engine is further configured to distinguish the first subset of the plurality of data packets from other data packets of the plurality of data packets by applying a tag to particular data packets to form tagged data packets. The system also includes a transmitter coupled to the signal-processing engine and configured to transmit the plurality of data packets of the video data stream.
    Type: Application
    Filed: February 7, 2011
    Publication date: July 7, 2011
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Ahmad C. Ansari, Dinesh Nadarajah, David Bruce Hartman
  • Patent number: 7908627
    Abstract: A system and method are disclosed for providing a unified video data stream for diverse receiving platforms. In some embodiments, the unified data stream can provide video data to multiple receiving devices with diverse video data input requirements. The communication system can include a digitizer that converts an analog video to a high resolution (HR) digital video signal. The communication system can also include a signal processing engine that receives the HR digital video signal, compress the video signal, creates video packets from the compressed signal, and identifies at least a portion of the video packets for distribution to lower resolution devices. The HR data stream can be sent to high resolution devices wherein the identified packets can be “copied” from the HR data stream and sent to devices having lower resolution requirements.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: March 15, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Ahmad C. Ansari, Dinesh Nadarajah, David B. Hartman
  • Publication number: 20110030014
    Abstract: A system and method are disclosed for receiving a group of video channels at a client device, selecting a display set from the group of channels, and sending a communication to a display for displaying each channel in the display set in parallel wherein each one of the channels in the display set is displayed in one of a plurality of picture in picture (PIP) displays for a predetermined time.
    Type: Application
    Filed: October 14, 2010
    Publication date: February 3, 2011
    Inventor: Dinesh Nadarajah
  • Patent number: 7830459
    Abstract: A system and method are disclosed for receiving a group of video channels at a client device, selecting a display set from the group of channels, and sending a communication to a display for displaying each channel in the display set in parallel wherein each one of the channels in the display set is displayed in one of a plurality of picture in picture (PIP) displays for a predetermined time.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: November 9, 2010
    Assignee: AT&T Knowledge Ventures, L.P.
    Inventor: Dinesh Nadarajah
  • Patent number: 7810122
    Abstract: A method of distributing content includes receiving at least one request for a particular content item. Based on the at least one request, a number of users who are to receive the particular content item and are capable of receiving the particular content item via a wireless link is determined. Based on the number of users, at least one of a wireline link and the wireless link from which the users are to receive the particular content item is selected. The particular content item is distributed to the users via the selected at least one link.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: October 5, 2010
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Dinesh Nadarajah
  • Publication number: 20100169938
    Abstract: A satellite transponder switch (STS) maintains a table that maps set-top boxes (STBs) to carrier frequencies. The STS receives a first request from a first STB for a first transponder band and a second request from a second STB for a second transponder band. The STS receives contact from the first STB on a control channel upon power-up of the first STB and in response to the contact from the first STB, assigns a first carrier frequency to the first STB. The STS frequency shifts the first transponder band to a first carrier frequency assigned to the first STB and the second transponder band to a second carrier frequency assigned to the second STB. The STS outputs a signal that comprises the frequency-shifted first and second transponder bands to the first STB and the second STB. The frequency-shifted first and second transponder bands are separated by a separation band. A first carrier frequency of the signal is unique to the first STB and a second carrier frequency of the signal is unique to the second STB.
    Type: Application
    Filed: March 12, 2010
    Publication date: July 1, 2010
    Applicant: AT&T INTELLECTUAL PROPERTY I,L.P.
    Inventors: Dinesh Nadarajah, Ahmad C. Ansari
  • Patent number: 7725582
    Abstract: A communications system serves as a proxy for a user device in a communications network. The communications system includes a network gateway that receives content in response to a user initiated content utilization attempt from a user device. A computer receives the content from the network gateway and, in response to receiving the content, determines whether the content utilization by the user can be permitted. The computer can also determine whether the content utilization by the user can be completed.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: May 25, 2010
    Assignee: AT & T Intellectual Property I, L.P.
    Inventor: Dinesh Nadarajah
  • Patent number: 7712120
    Abstract: A satellite transponder switch (STS) maintains a table that maps set-top boxes (STBs) to carrier frequencies. The STS receives a first request from a first STB for a first transponder band and a second request from a second STB for a second transponder band. The STS accesses a first satellite feed and polarity based on the first request, and a second satellite feed and polarity based on the second request. The STS band-pass filters the first and second transponder bands from the first and second satellite feed and polarity, respectively. The STS frequency shifts the first transponder band to a first carrier frequency assigned to the first STB and the second transponder band to a second carrier frequency assigned to the second STB. The STS outputs a signal that comprises the frequency-shifted first and second transponder bands to the first STB and the second STB.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: May 4, 2010
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Dinesh Nadarajah, Ahmad C. Ansari
  • Publication number: 20090106346
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a communication device having a controller to request from an alternate communication device a log of subscribed content acquired by the alternate communication device from an alternate source, identify from the log a desired portion of the subscribed content, and transmit to the alternate communication device a peer-to-peer request for the desired portion of the subscribed content according to one or more available subscriptions. Additional embodiments are also disclosed.
    Type: Application
    Filed: December 19, 2008
    Publication date: April 23, 2009
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Adam Klein, David Wolter, Dinesh Nadarajah, Rias Muhamed