Patents Assigned to Broadcom
  • Patent number: 8089899
    Abstract: A method for communication is disclosed and may include performing, using one or more processors and/or circuits in a server platform, negotiating a rate at which one or more of a plurality of blade servers in the server platform communicate. Data may be communicated at the negotiated data rate by the one or more of the plurality of blade servers. The data rate may be negotiated in response to one or more packets received by the one or more of the plurality of blade servers. At least a portion of the data may be communicated from a first of the plurality of blade servers to a second of the plurality of blade servers at the negotiated data rate.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Martin Lund, Gregory Young
  • Patent number: 8090879
    Abstract: A communication device includes an RF transceiver for communicating first data with a first remote communication device via a first protocol and a first frequency band in a first mode of operation. A millimeter wave transceiver communicates second data with a second remote communication devices via a second protocol and a 60 GHz frequency band in a second mode of operation. A communication control module coordinates the communication of the first data and the second data with the at least one of the plurality of remote communication devices. A graphical interface device selects the first remote communication device and the second remote communication device and selects at least one of the first mode of operation and the second mode of operation, based on actions of a user.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8090315
    Abstract: Aspects of a method and system for frequency control in a frequency shifting repeater are provided. In this regard, a reference frequency may be divided to generate a first pair of local oscillator (LO) signals, the first pair of LO signals may be divided to generate a second pair of LO signals. The two pairs of LO signals may be utilized to frequency shift a received signal for repeating the signal on a different frequency. The frequency shifted signal may be generated by down-converting the received signal utilizing the first pair of LO signals, up-converting the down-converted signal utilizing the second pair of LO signals, and combining the resulting up-converted signals. The reference frequency may be divided by a first scaling factor to generate the first pair of LO signal which, in turn, may be divided by a second scaling factor to generate the second pair of LO signals.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza Rofougaran
  • Patent number: 8090864
    Abstract: Systems having a user interface comprising a filtered view of media available for consumption are disclosed. An embodiment of the present invention may provide a first user with a view that enables consumption of only the available media that matches characteristics of a media filter. The characteristics of the media filter may be specified by a second user, and the second user may define the characteristics of the media filter remotely, via a communication network. The user interface may support separate media filters for each of a number of different users. Filter characteristics such as type of media channel, the language of any dialogue, an industry rating, an overall viewer rating, and the media format may be supported. The media filter characteristics may be applied not only to what is displayed on the user interface, but also the media available for selection via a remote control.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, James D. Bennett
  • Patent number: 8091009
    Abstract: Symbol by symbol MAP detection for signals corrupted by colored and/or signal dependent noise. A novel means is presented for recursive calculation of forward metrics (?), backward metrics (?), and corresponding soft information (e.g., which can be provided as LLRs (log likelihood ratios)) within communication systems in which a trellis can be employed to perform demodulation of a received signal sequence. For signals that have been corrupted by colored and/or signal dependent noise, this means provides for the ability to perform novel soft information calculation for subsequent use in iterative decoding processing. Many types of communication channels can benefit from this novel means of detection including communication channels within hard disk drives (HDDs).
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Ravi Motwani
  • Patent number: 8090043
    Abstract: Apparatus, methods and systems for compensating for an I/Q imbalance may include compensating for an imbalance between a first component of a data signal and a second component of the data signal. The data signal may be modulated by a carrier signal having a frequency error. The first component may be characterized by at least one parameter. The method may include receiving the data and carrier signals; selecting a value for the parameter such that the frequency domain energy at negative frequencies is reduced; and modifying at least one of the components based on the value.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Zak Levi, Eliahu Shusterman
  • Patent number: 8090044
    Abstract: A wireless transceiver includes a plurality of antennas. A plurality of signal recovery circuits generate a selected number of received signals from a first subset of the plurality of antennas, based on a control signal. A receiver section recovers an inbound data stream from the selected number of received signals. A transmitter module generates a transmit signal to a selected one of the plurality of antennas, based on the control signal. The intersection between the first subset of the plurality of antennas and the selected one of the plurality of antennas is the null set for each value of the control signal. The control signals can be generated in multiple different operational modes including, for instance, a cyclic modes and a fixed mode of operation.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza Reza Rofougaran
  • Patent number: 8090328
    Abstract: An RFIC includes an RF transmitter, that generates an RF signal to a power amplifier module that operates a selected one of a plurality of power amplifiers, based one or more control signals. A processing module generates the control signals based on a selected one of a plurality of modes, wherein the plurality of modes include a first wireless mode corresponding to the use of the RFIC in accordance with a first wireless standard and a second wireless mode corresponding to the use of the RFIC in accordance with a second wireless standard. A power management circuit generates a plurality of power supply signals including at least one power supply signal for selectively powering only the selected one of the plurality of power amplifiers, in response to the at least one control signal, wherein the power management circuit is bonded to a bottom of the RFIC so as to dissipate heat to a printed circuit board.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8089957
    Abstract: Embodiments of the present invention provide a network infrastructure operable to support the exchange of communications, such as textual, image, video and voice communications, between a first client terminal having a first user identifier and service by a first service provider and a second (destination) client terminal having a second user identifier and serviced by a second service provider. This network infrastructure includes a packet-switch network, a shared database and a number of client terminals serviced by different service providers. These terminals include a network interface and are identified by their service provider by a network address. The shared database associates user identifiers with network addresses. This allows a user to access the shared database in order to initiate a call request from the first client terminal to the second client terminal.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventor: James D. Bennett
  • Patent number: 8091013
    Abstract: Multi-code LDPC (Low Density Parity Check) decoder. Multiple LDPC coded signals can be decoded using hardware provisioned for a minimum requirement needed to decode each of the multiple LDPC coded signals. In embodiments where each LDPC matrix (e.g., employed to decode each LDPC coded signal) includes a common number of non-null sub-matrices, then a same number of memories are employed when decoding each LDPC coded signal. However, those particular memories employed can be different subsets for when decoding each LDPC coded signal. In embodiments where each LDPC code includes a different number of non-null sub-matrices within its respective LDPC matrix, then a different number of memories are employed when decoding each LDPC coded signal. Various degrees of parallelism in decoding can also be employed in which different numbers of bit engines and check engines can be employed when decoding different LDPC coded signals.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Andrew J. Blanksby, Alvin Lai Lin
  • Patent number: 8089890
    Abstract: A method for transmitting high rate data within a multiple input multiple output (MIMO) wireless local area network (WLAN) begins by determining a data transmission rate. The method continues by, when the data transmission rate is between a first data rate and a second data rate, enabling two transmission paths. The method continues by, for each of the two transmission paths, determining at least one of: level of constellation, number of data subcarriers, rate code, and cyclic prefix duration.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Christopher J. Hansen
  • Patent number: 8090048
    Abstract: Aspects of a method and system for an alternating channel delta quantizer for MIMO pre-coders with finite rate channel state information feedback may include quantizing a change in channel state information in a MIMO pre-coding system onto a codebook using a cost function and selecting the codebook from a set of codebooks; and generating the set of codebooks from a plurality of codebooks, where each may comprise one or more unitary matrices. The channel state information may be a matrix V that may be generated using Singular Value Decomposition (SVD) and/or Geometric Mean Decomposition (GMD). The selecting of the codebooks may be enabled by alternating between the elements of the set of codebooks. The cost function f(A) may be defined by the following relationship: f ? ( A ) = ( 1 N ? ? j = 1 N ? ? a jj ? 2 ) where A is a matrix of size N by N and aij is element (i,j) of matrix A.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Mark Kent, Vinko Erceg, Jun Zheng, Uri Landau
  • Patent number: 8090314
    Abstract: Aspects of a method and system for communicating via a frequency shifting repeater are provided. In this regard, a signal having a first frequency may be received, the received signal may be quadrature down-converted by mixing it with a pair of phase-quadrature local oscillator (LO) signals, the down-converted signals may be up-converted by mixing them with the LO signals, and the up-converted signals may be added or subtracted to generate a signal, having a second frequency, for transmission. In this manner, a wireless communication range may be extended by repeating the received signal on a different frequency than at which it was received. The frequency of the LO signals may be based on a desired difference between the first and second frequencies, a frequency at which a target device receives signals, and/or noise present.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: January 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza Rofougaran
  • Publication number: 20110320213
    Abstract: A technique is described for use in a decoder configured to decode a series of frames representing an encoded audio signal. The technique is for transitioning between a lost frame and one or more received frames following the lost frame in the series of frames. In accordance with the technique, an output audio signal associated with the lost frame is synthesized. An extrapolated signal is generated based on the synthesized output audio signal. A time lag is calculated between the extrapolated signal and a decoded audio signal associated with the received frame(s), wherein the time lag represents a phase difference between the extrapolated signal and the decoded audio signal. The decoded audio signal is time-warped based on the time lag, wherein time-warping the decoded audio signal comprises stretching or shrinking the decoded audio signal in the time domain.
    Type: Application
    Filed: September 7, 2011
    Publication date: December 29, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: Robert W. Zopf, Juin-Hwey Chen, Jes Thyssen
  • Publication number: 20110316139
    Abstract: An integrated circuit (IC) device is provided. The IC device includes a substrate, an IC die coupled to the substrate, and a first wirelessly enabled functional block formed on the IC die. The first wirelessly enabled functional block is configured to wirelessly communicate with a second wirelessly enabled functional block formed on the substrate.
    Type: Application
    Filed: February 7, 2011
    Publication date: December 29, 2011
    Applicant: Broadcom Corporation
    Inventors: Sam Ziqun ZHAO, Ahmadreza ROFOUGARAN, Arya BEHZAD, Jesus CASTANEDA, Michael BOERS
  • Publication number: 20110320214
    Abstract: A system and method is described herein in which an audio source wirelessly transmits audio content to a first audio sink over one wireless link and to a second audio sink over another wireless link. The two audio sinks also exchange forward error correction (FEC) streams over a link between the two audio sinks, wherein the FEC streams are generated by FEC encoding the audio content received from the audio source. The audio sinks advantageously use the exchanged FEC information to synchronize the playback of the audio content as well as to improve the robustness of the wireless links with the audio source in a manner that does not consume additional bandwidth on those links.
    Type: Application
    Filed: September 8, 2011
    Publication date: December 29, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: Laurent Pilati, Mickael Jougit
  • Publication number: 20110318885
    Abstract: In one embodiment, a method for assembling a ball grid array (BGA) package is provided. The method includes providing a stiffener that has opposing first and second surfaces, wherein the first surface is capable of mounting an integrated circuit (IC) die in a central area and forming a pattern in at least a portion of the first surface to enhance the adhesiveness of an encapsulant material to the first surface.
    Type: Application
    Filed: September 2, 2011
    Publication date: December 29, 2011
    Applicant: Broadcom Corporation
    Inventors: Sam Ziqun Zhao, Reaz-ur Rahman Khan, Edward Law, Marc Papageorge
  • Publication number: 20110320841
    Abstract: Provided are systems and methods for execution by a core of a peripheral component to provide power management for a data bus in a electronic device, suhc as a mobile electronic device. One method comprises determining whether a device in the peripheral component is inactive, transmitting a request for deactivation of at least one data channel to the device, receiving a command to deactivate the at least one data channel, determining whether any remaining devices in the peripheral component are active, and placing the peripheral component in a first low power mode wherein the core remains active in order to monitor a data bus clock.
    Type: Application
    Filed: September 21, 2010
    Publication date: December 29, 2011
    Applicant: BROADCOM CORPORATION
    Inventor: Rajesh Kumar Sinha
  • Publication number: 20110317723
    Abstract: A power-line communications (PLC) device communicates with a second PLC device via a PLC medium and includes a transmitter and a receiver. The transmitter transmits a Request to Send (RTS) communication to the second PLC device at a first power level. The receiver receives a Clear to Send (CTS) communication from the second PLC device. The transmitter transmits data to the second PLC device at a second power level that is less than the first power level. The transmitter transmits a TDM frame to the second PLC device that includes a preamble and header transmitted at a first power level and at least one special data symbol and a payload transmitted at a second power level that is less than the first power level. The special data symbol resides between the preamble or header and the payload and is usable by the second PLC device for processing of the payload.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 29, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: Jose Abad Molina, Jonathan Ephraim David Hurwitz
  • Publication number: 20110317603
    Abstract: A communications device includes a wireless communications interface, a power line carrier (PLC) communications interface, and processing circuitry coupled to the wireless communications interface and to the PLC communications interface. The processing circuitry, in combination with at least one of the wireless communications interface and the PLC communications interface is operable to send a request for wireless communications interface operational parameters via the PLC communications interface, receive a response via the PLC communications interface, the response including wireless communications interface operational parameters corresponding to a wireless network, and configure wireless communications interface based upon response. In another operation, the processing circuitry is operable to listen for transmissions of at least one Wireless Access Point (WAP) of the wireless network.
    Type: Application
    Filed: April 29, 2011
    Publication date: December 29, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: David Ruiz Lopez, Josemaria Ogara Fernandez de Arroyabe, Juan Carlos Riveiro Insua, Jonathan E.D. Hurwitz