Patents by Inventor Nambirajan Seshadri

Nambirajan Seshadri 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: 8520662
    Abstract: A system and method supporting access to multimedia information based upon user-defined quality of service criteria is disclosed. A broadband access gateway may coordinate network behavior during the transition of an access device among communication pathways having different available capacities. Adjustments in bit rates and levels of compression may be made based upon the user-defined quality of service criteria. The user may be notified when network conditions disallow support for the desired quality of service, and may choose to override selected criteria. The user-defined quality of service criteria may be stored within the gateway and associated with a user, or may be located in the access device and accessible to the gateway.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: August 27, 2013
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, Marc Abrams, Nambirajan Seshadri
  • Patent number: 8494530
    Abstract: A system and method supporting extended network access notification via a broadband access gateway is disclosed. A representative embodiment of the present invention may comprise a wireless interface and may be capable of exchanging multimedia communication between the wireless interface and a broadband network. The gateway may support multimedia communication via access devices that may seamlessly hand off from a wireless wide area network to a personal area network supported by the wireless interface. The hand off may be coordinated by the gateway and the wireless wide area network via the broadband network. A user of an access device may be notified when such a handoff has been automatically initiated, and a user may configure aspects of such hand offs.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: July 23, 2013
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, Marc Abrams, Nambirajan Seshadri
  • Patent number: 8495152
    Abstract: A device includes a primary cue module, a secondary cue module, a processing module, and a wireless transceiver. The primary cue module obtains primary data regarding an object of interest and the secondary cue module obtains secondary data regarding the object of interest. The processing module is operably coupled to: convert the primary data and the secondary data into an outbound message; convert the outbound message into an outbound symbol stream; and convert an inbound symbol stream into an inbound message, wherein the inbound message includes information regarding the object of interest. The wireless transceiver is operably coupled to: convert the outbound symbol stream into an outbound wireless signal; and convert an inbound wireless signal into the inbound symbol stream.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: July 23, 2013
    Assignee: Broadcom Corporation
    Inventor: Nambirajan Seshadri
  • Patent number: 8489151
    Abstract: A modular wireless headset having integrated but detachable elements is operable to service a cellular wireless terminal, streamed media or playback device. This modular wireless headset may include a wireless microphone and a wireless earpiece. The wireless earpiece may physically couple to the wireless microphone and a base unit in order to exchange information and share power resources. A power distribution controller allocates power between the wireless earpiece, wireless microphone, and base unit when physically coupled to operate or charge internal power supplies of the components.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: July 16, 2013
    Assignee: Broadcom Corporation
    Inventors: Josephus A. Van Engelen, Jeyhan Karaoguz, Nambirajan Seshadri, James D. Bennett
  • Publication number: 20130151254
    Abstract: A speech recognition module includes an acoustic front-end module, a sound detection module, and a word detection module. The acoustic front-end module generates a plurality of representations of frames from a digital audio signal and generates speech characteristic probabilities for the plurality of frames. The sound detection module determines a plurality of estimated utterances from the plurality of representations and the speech characteristic probabilities. The word detection module determines one or more words based on the plurality of estimated utterances and the speech characteristic probabilities.
    Type: Application
    Filed: January 31, 2013
    Publication date: June 13, 2013
    Applicant: BROADCOM CORPORATION
    Inventor: Nambirajan Seshadri
  • Publication number: 20130143618
    Abstract: A communication device includes memory, an input interface, a processing module, and a transmitter. The processing module receives a digital signal from the input interface, wherein the digital signal includes a desired digital signal component and an undesired digital signal component. The processing module identifies one of a plurality of codebooks based on the undesired digital signal component. The processing module then identifies a codebook entry from the one of the plurality of codebooks based on the desired digital signal component to produce a selected codebook entry. The processing module then generates a coded signal based on the selected codebook entry, wherein the coded signal includes a substantially unattenuated representation of the desired digital signal component and an attenuated representation of the undesired digital signal component. The transmitter converts the coded signal into an outbound signal in accordance with a signaling protocol and transmits it.
    Type: Application
    Filed: January 31, 2013
    Publication date: June 6, 2013
    Applicant: BROADCOM CORPORATION
    Inventor: Nambirajan Seshadri
  • Patent number: 8436491
    Abstract: A low pin count IC includes a wireless power receive coil, a rectifying circuit, an output circuit, circuit modules, a power management unit (PMU), a die, and a package substrate. The wireless power receive coil generates an AC voltage from a wireless power electromagnetic signal and the rectifying circuit generates a rectified voltage from the AC voltage. The output circuit generates a DC voltage from the rectified voltage. The PMU manages distribution of the DC voltage to the circuit modules. The die supports the circuit modules and the PMU, wherein the die includes return pads for coupling to circuit return nodes and a PMU return node. The package substrate supports the die and includes return pins for coupling to the return pads, wherein at least one of the die and the package substrate support the wireless power receive coil, the rectifying circuit, and the output circuit.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: May 7, 2013
    Assignee: Broadcom Corporation
    Inventors: John Walley, Jeyhan Karaoguz, Ahmadreza (Reza) Rofougaran, Nambirajan Seshadri, Reinier Van Der Lee
  • Patent number: 8437362
    Abstract: A method for asymmetrical MIMO wireless communication begins by determining a number of transmission antennas for the asymmetrical MIMO wireless communication. The method continues by determining a number of reception antennas for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas exceeds the number of reception antennas, using spatial time block coding for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas does not exceed the number of reception antennas, using spatial multiplexing for the asymmetrical MIMO wireless communication.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: May 7, 2013
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Jason A. Trachewsky, Nambirajan Seshadri, Kelly Brian Cameron, Hau Thien Tran, Ba-Zhong Shen
  • Patent number: 8430750
    Abstract: A video gaming device includes a processing module, a graphics processing module, and a video gaming object interface module. The processing module interprets a digital image(s) of a player to determine an identity of the player. When the identity of the player is determined, the processing module retrieves a user profile and generates video gaming menu data in accordance with at least one data element of the user profile. The graphics processing module renders a display image based on the video gaming menu. The video gaming object interface module receives a wireless menu selection signal and converts it into a menu selection signal.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: April 30, 2013
    Assignee: Broadcom Corporation
    Inventor: Nambirajan Seshadri
  • Patent number: 8423039
    Abstract: A system and method that provide dynamic reconfiguration of communication resources in a multi-transceiver configuration. Various aspects of the present invention may comprise communicating a first portion of a first communication using a plurality of transceivers. A determination may be made to reallocate at least one of the plurality of transceivers for a second communication. A second portion of the first communication may be communicated using the plurality of transceivers less the reallocated transceiver(s), and the second communication may be communicated using at least the reallocated transceiver(s). Various aspects of the present invention may also comprise communicating a first communication utilizing a first transceiver and a second communication utilizing a second transceiver. A determination may be made to utilize the first and second transceivers in a MIMO configuration to communicate next information.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: April 16, 2013
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, Nambirajan Seshadri, James D. Bennett
  • Patent number: 8422587
    Abstract: Enhanced performance is achieved by combining channel coding with the space-time coding principles. With K synchronized terminal units transmitting on N antennas to a base station having M?K receive antennas, increased system capacity and improved performance are attained by using a concatenated coding scheme where the inner code is a space-time block code and the outer code is a conventional channel error correcting code. Information symbols are first encoded using a conventional channel code, and the resulting signals are encoded using a space-time block code. At the receiver, the inner space-time block code is used to suppress interference from the other co-channel terminals and soft decisions are made about the transmitted symbols. The channel decoding that follows makes the hard decisions about the transmitted symbols. Increased data rate is achieved by, effectively, splitting the incoming data rate into multiple channels, and each channel is transmitted over its own terminal.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: April 16, 2013
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Arthur Robert Calderbank, Ayman Naguib, Nambirajan Seshadri
  • Publication number: 20130086164
    Abstract: A technique to identify vehicles proximal in distance to a user's vehicle travelling on a road, transmit wirelessly to the vehicles an inquiry to attempt to communicate with one of the vehicles and when a response is received in the affirmative from an intended target vehicle, adding the intended target vehicle to a social networking group. The user then establishes a wireless communication link between the user's vehicle and the responding target vehicle to conduct vehicle-to-vehicle wireless communication between the user and an occupant in the responding target vehicle. Subsequently, other vehicles may be added to the social networking group to provide a platform for conducting conversations and information exchange among the social networking group.
    Type: Application
    Filed: December 14, 2011
    Publication date: April 4, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Jeffrey D. Wheeler, Nambirajan Seshadri
  • Patent number: 8410637
    Abstract: A wireless power system includes a wireless power transmit and receive units. The wireless power transmit unit includes a wireless power transmit circuit that generates a wireless power magnetic field and a transmit unit transceiver that transceives a communication regarding the wireless power magnetic field in accordance with a control channel protocol. The wireless power receive unit includes a wireless power receive circuit, a transceiver, and a processing module. The wireless power receive circuit converts the wireless power magnetic field into a voltage.
    Type: Grant
    Filed: May 1, 2010
    Date of Patent: April 2, 2013
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, John Walley, Ahmadreza (Reza) Rofougaran, Nambirajan Seshadri, Reinier Van Der Lee
  • Patent number: 8402159
    Abstract: Methods and systems for distributed infrastructure for streaming data via multiple access points. Aspects of one method may include apportioning multimedia information among a plurality of transmitting devices based on feedback channel information received from a destination receiving device by, for example, a transmission controller device. The transmitting devices may transmit the multimedia information to the destination receiving device. A transmitting device that may not be apportioned multimedia information may transmit a probing signal. The destination receiving device may generate feedback channel information for a transmitting device, for example, based on the multimedia information or the probing signal received from the respective transmitting device. The apportioning of the multimedia information may be dynamically adjusted based on updated feedback channel information received from the destination receiving device.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: March 19, 2013
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, Hooman Honary, Nambirajan Seshadri, Jason A. Trachewsky
  • Patent number: 8396154
    Abstract: Block-encoded transmissions of a multi-antenna terminal unit are effectively detected in the presence of co-channel interfering transmissions when the base station has a plurality of antennas, and interference cancellation is combined with maximum likelihood decoding. More specifically, the signals received at the base station antennas are combined in a linear combination that relates to the channel coefficients between the various transmitting terminal units and the base antennas. By selecting proper coefficients for the linear combination and choosing probable transmitted signals that minimize a minimum mean squared error function, the signals of the various terminal units are canceled when detecting the signal of a particular unit. In another embodiment of the invention, the basic approach is used to obtain an initial estimate of the signals transmitted by one terminal unit, and the contribution of those signals is removed from the received signals prior to detecting the signals of other terminal units.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: March 12, 2013
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Ayman F. Naguib, Nambirajan Seshadri
  • Patent number: 8391807
    Abstract: A communication device includes memory, an input interface, a processing module, and a transmitter. The processing module receives a digital signal from the input interface, wherein the digital signal includes a desired digital signal component and an undesired digital signal component. The processing module identifies one of a plurality of codebooks based on the undesired digital signal component. The processing module then identifies a codebook entry from the one of the plurality of codebooks based on the desired digital signal component to produce a selected codebook entry. The processing module then generates a coded signal based on the selected codebook entry, wherein the coded signal includes a substantially unattenuated representation of the desired digital signal component and an attenuated representation of the undesired digital signal component. The transmitter converts the coded signal into an outbound signal in accordance with a signaling protocol and transmits it.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: March 5, 2013
    Assignee: Broadcom Corporation
    Inventor: Nambirajan Seshadri
  • Patent number: 8390249
    Abstract: A battery includes one or more rechargeable cells, a wireless power coil, a battery charger circuit, and may further include an RFID module. The wireless power coil is operable to generate an AC voltage from a wireless power electromagnetic field. The battery charger circuit is operable to generate a battery charge voltage from the AC voltage in accordance with a battery charge control signal and, when enabled, to charge the one or more rechargeable cells via the battery charge voltage. If the battery further includes the RFID module, it is operable to generate the battery charge control signal and communicate with a wireless power transmitter device.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: March 5, 2013
    Assignee: Broadcom Corporation
    Inventors: John Walley, Jeyhan Karaoguz, Ahmadreza (Reza) Rofougaran, Nambirajan Seshadri, Reinier Van Der Lee
  • Patent number: 8392189
    Abstract: A speech recognition module includes an acoustic front-end module, a sound detection module, and a word detection module. The acoustic front-end module generates a plurality of representations of frames from a digital audio signal and generates speech characteristic probabilities for the plurality of frames. The sound detection module determines a plurality of estimated utterances from the plurality of representations and the speech characteristic probabilities. The word detection module determines one or more words based on the plurality of estimated utterances and the speech characteristic probabilities.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: March 5, 2013
    Assignee: Broadcom Corporation
    Inventor: Nambirajan Seshadri
  • Patent number: 8386898
    Abstract: A method and apparatus for increasing the data rate and providing antenna diversity using multiple transmit antennas is disclosed. A set of bits of a digital signal are used to generate a codeword. Codewords are provided according to a channel code. Delay elements may be provided in antenna output channels, or with suitable code construction delay may be omitted. n signals represent n symbols of a codeword are transmitted with n different transmit antennas. At the receiver MLSE or other decoding is used to decode the noisy received sequence. The parallel transmission and channel coding enables an increase the data rate over previous techniques, and recovery even under fading conditions. The channel coding may be concatenated with error correction codes under appropriate conditions.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: February 26, 2013
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Arthur Robert Calderbank, Ayman F. Naguib, Nambirajan Seshadri, Vahid Tarokh
  • Patent number: 8352845
    Abstract: A method and apparatus for increasing the data rate and providing antenna diversity using multiple transmit antennas is disclosed. A set of bits of a digital signal are used to generate a codeword. Codewords are provided according to a channel code. Delay elements may be provided in antenna output channels, or with suitable code construction delay may be omitted. n signals represent n symbols of a codeword are transmitted with n different transmit antennas. At the receiver MSLE or other decoding is used to decode the noisy received sequence. The parallel transmission and channel coding enables an increase the data rate over previous techniques, and recovery even under fading conditions. The channel coding may be concatenated with error correction codes under appropriate conditions.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: January 8, 2013
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Arthur Robert Calderbank, Ayman F. Naguib, Nambirajan Seshadri, Vahid Tarokh