Patents Assigned to Broadcom
  • Patent number: 8270912
    Abstract: Aspects of a method and system for a transformer in an integrated circuit package are provided. In this regard, signals may be transmitted and/or received via an antenna communicatively coupled to a transformer embedded in multi-layer integrated circuit package. The windings ratio of the transformer may be configured based on an impedance of the antenna, an impedance of a transmitter coupled to the transformer, an impedance of an LNA coupled to the transformer, and/or a power level of the received and/or transmitted signals. The windings ratio may be configured via one or more switching elements which may be MEMS switches embedded in the multi-layer IC package. The transformer may comprise a plurality of loops fabricated on a corresponding plurality of metal layers in the multi-layer IC package, and the loops may be communicatively coupled with one or more vias. The multi-layer IC package may comprise ferromagnetic and/or ferromagnetic materials.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8270539
    Abstract: A method for decoding bi-phase encoded data begins by interpreting a first bit boundary of a bit of the bi-phase encoded data to produce a first boundary value. The method continues by interpreting a second bit boundary of the bit of the bi-phase encoded data to produce a second boundary value. The method continues by comparing the first boundary value to the second boundary value to produce a decoded bit.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventors: Kambiz Shoarinejad, Ahmadreza (Reza) Rofougaran
  • Patent number: 8270432
    Abstract: Aspects of a method and system for rate selection algorithm to maximize throughput in closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) system are provided and may comprise computing a maximum number of binary bits to be simultaneously transmitted via an RF channel based on signal quality. A modulation technique may be selected based on the computed maximum, communicating feedback information comprising the selected modulation technique. Subsequently transmitted data may be received via an RF channel which is modulated based on the feedback information. Another aspect of the method may comprise receiving feedback information comprising at least one of a selected modulation technique and coding rate via an RF channel, and transmitting subsequent data via said at least one of a plurality of RF channels which either modulated, or coded, based on the feedback information.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventor: Joonsuk Kim
  • Patent number: 8271029
    Abstract: A multimode communication integrated circuit comprising baseband processing circuitry with a shared radio interface. Various aspects of the present invention may comprise a processor module adapted to perform various processing (e.g., baseband processing) in support of multimode communications. A first radio module may be communicatively coupled to the processor module through a common communication interface. A second radio module may also be communicatively coupled to the processor module through the common communication interface. The common communication interface may, for example, be adapted to communicate information over a communication bus that is shared between the processor module and a plurality of radio modules (e.g., the first and second radio modules).
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventor: Jeyhan Karaoguz
  • Patent number: 8272017
    Abstract: Methods and systems for communicating information in a network are disclosed herein and may include receiving, at a mobile terminal, a high definition television (HDTV) signal via a DVB-H downlink communication path. A standard definition television (SDTV) signal may be simultaneously received at the mobile terminal via a cellular downlink communication path. The SDTV signal and the HDTV signal may comprise the same media content. The HDTV signal received via the DVB-H downlink communication path and the SDTV signal received via the cellular downlink communication path may be selected in the mobile terminal for processing. The selection may be based on a preference indicated via the mobile terminal. The selection may also be based on at least one downlink channel condition indicator corresponding to the HDTV signal or the SDTV signal.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventor: Pieter van Rooyen
  • Patent number: 8270926
    Abstract: A radio front end includes a transformer and an adjustable load. The transformer includes a first winding and a second winding, wherein the first winding is operably coupled to an antenna and the second winding coupled to at least one of a power amplifier and a low noise amplifier. The adjustable load is operably coupled to the second winding, wherein the adjustable load provides a first impedance based on a first impedance selection signal when the radio front end is in a transmit mode and provides a second impedance based on a second impedance selection signal when the radio front end is in a receive module such that impedance at the first winding is substantially similar in the transmit mode and in the receive mode.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventors: Razieh Roufoogaran, Jesus Alfonso Castaneda
  • Patent number: 8270907
    Abstract: Aspects of a method and system for matching an integrated system to an antenna utilizing on-chip measurement of reflected signals are provided. In a chip comprising at least a portion of a receiver and at least a portion of a transmitter, a best impedance match between an antenna and the chip may be determined based on on-chip measurement of one or more signals reflected from the antenna. The best impedance match between the antenna and the chip may be determined utilizing a correction algorithm. The correction algorithm may be determined utilizing data from an external test set that measures signals transmitted by the chip via the antenna. The reflected signals may be routed to a signal analyzer via on on-chip directional coupler. The best impedance match may be determined for each of a plurality of frequencies and/or each of a plurality of transmit signal strengths.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventor: Thomas Baker
  • Patent number: 8270925
    Abstract: An extended antenna module includes an antenna section and an extended wireless interface. The antenna section is operable to receive an inbound radio frequency (RF) signal when an antenna select signal is in a first state and/or transmit an outbound RF signal when the antenna select signal is in the first state. The extended wireless interface is operable to wirelessly receive the outbound RF signal from a unit wireless interface when the antenna select signal is in the first state and wirelessly transmit the inbound RF signal to the unit wireless interface when the antenna select signal is in the first state.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventors: Arya Reza Behzad, Brima B. Ibrahim, John Walley, Vinko Erceg, Jeyhan Karaoguz, David Rosmann
  • Patent number: 8271800
    Abstract: Systems and methods that process and protect content are provided. In one example, a system may include, for example, a first device coupled to a second device. The first device may include, for example, an integrated circuit that may include a content processing system and a security system. The security system may include, for example, a digital rights manager. The first device and the second device may be part of a network. The network receives content and control information via the first device. The content processing system processes incoming content based upon at least the control information. The integrated circuit protects the content before placing the content on the network.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventor: Jeffrey Douglas Carr
  • Patent number: 8270664
    Abstract: A device such as a set-top-box, digital TV, DVD player, multi-media player, cellular telephone or digital cinema player that may handle data such as multimedia data and/or audio/video signals, may determine its location. The device may determine its location based on GPS information and may send its location to an external entity, for example, a service provider. The device may generate a watermark comprising its determined location and may embed or insert the watermark within the data. In addition, the generated watermark may comprise one or more of a unique identifier for the device, a source of the data, for example, a service provider, a date and a time. The watermark may be secured via processing, for example, the watermark may be encrypted prior to being embedded. The data may be compressed when embedding the watermark. The watermark embedding process may be handled via a secure embedded processor and/or secure code.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventors: Rajesh Mamidwar, Xuemin Chen, Robert Brownhill
  • Patent number: 8270920
    Abstract: Devices and methods for receiving, processing and formatting digital video. The devices may include a single semiconductor chip on which is imprinted a radio frequency signal tuner module and a display interface module. The display interface module may be configured to receive programming information from the radio frequency signal tuner module. The display interface module may be configured to communicate the programming information to a digital video recorder. The radio frequency tuner module may include a first radio frequency input channel and a second radio frequency input channel. The radio frequency signal tuner module may include a system oscillator and a phase-locked loop (“PLL”) circuit configured to generate a clock signal. The phase-locked loop circuit may be configured to transmit the signal to the display interface module and to any other suitable modules on the chip.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventors: Eric Chan, Sack Lee Chan, Hiroshi Suzuki, Prijesh Patel
  • Patent number: 8269323
    Abstract: Methods, systems, and apparatuses for integrated circuit packages, and for package stacking, are provided. An electrically conductive frame is attached to a first surface of a substrate. The electrically conductive frame includes a perimeter ring portion, a plurality of leads, and a plurality of interconnect members positioned within a periphery formed by the perimeter ring portion. Each interconnect member is coupled to the perimeter ring portion by a respective lead. A first end of each interconnect member is coupled to the first surface of the substrate. An encapsulating material is applied to the first surface of the substrate, without covering a second end of each interconnect member with the encapsulating material. The perimeter ring portion is removed from the electrically conductive frame to isolate the plurality of interconnect members. A first integrated circuit package is formed in this manner. A second integrated circuit package may be mounted to the first package.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventors: Rezaur Rahman Khan, Ken Jian Ming Wang
  • Publication number: 20120230225
    Abstract: Methods and apparatus for improving hash-based load balancing with per-hop seeding are disclosed. The methods and apparatus described herein provide a set of techniques that enable nodes to perform differing mathematical transformations when selecting a destination link. The techniques include manipulation of seeds, hash configuration mode randomization at a per node basis, per node/microflow basis or per microflow basis, seed index generation, and member selection. A node can utilize any, or all, of the techniques presented in this disclosure simultaneously to improve traffic distribution and avoid path starvation with a degree of determinism.
    Type: Application
    Filed: March 12, 2012
    Publication date: September 13, 2012
    Applicant: Broadcom Corporation
    Inventors: Brad MATTHEWS, Puneet Agarwal
  • Publication number: 20120230375
    Abstract: Aspects of a method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer are presented. Aspects of the system may include at least one circuit that enables generation of an output signal in response to one or more generated input signals. A feedback signal may be generated within a single feedback mixer circuit that may perform a frequency mix-down operation on the generated output signal. The generated feedback signal may be inserted at one or more insertion points in a receiver. Each of the insertion points may be located between a mixer stage of the receiver, and one or more circuits that generate a baseband signal based on the generated feedback signal.
    Type: Application
    Filed: May 23, 2012
    Publication date: September 13, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Arya Behzad, Ali Afashi, Vikram Magoon
  • Publication number: 20120230194
    Abstract: Methods and apparatus for improving hash-based load balancing with randomized seed selection are disclosed. The methods and apparatus described herein increase the number of unique fields in a hash key before the hash key is presented to a hash function. The methods include selecting one or more seed values based the output of a first arbitrary function having a first set of packet fields as input. The one or more seed values are combined with a second set of packet fields. A second arbitrary function generates a hash value based on the one or more seed values and the second set of packet fields. The hash value is applied as input to a hash function in a member selection module. The method enables per flow randomization attributes based on per packet attributes to perform aggregate member selection while remaining deterministic from a root-node or network perspective.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 13, 2012
    Applicant: Broadcom Corporation
    Inventors: Brad MATTHEWS, Puneet Agarwal
  • Publication number: 20120230297
    Abstract: A management unit allocates network resources multiservice communication devices capable of communicating via a plurality of networks. The management unit includes a communication device interface for facilitating a bidirectional data communication with the multiservice communication devices via a wireless control channel, the bidirectional data communication including outbound control data sent to multiservice communication devices and inbound control data received from at multiservice communication devices. The wireless control channel is separate from the communication between multiservice communication devices and the networks. A network interface receives network resource data from the networks. A management processing unit generates the outbound control data in response. The management processing unit facilities the handoff of a real-time service accessed by the multiservice communication devices via a first network to a second network.
    Type: Application
    Filed: April 11, 2012
    Publication date: September 13, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Vinko Erceg, Arya Reza Behzad, David John Rosmann, Brima B. Ibrahim, Jeyhan Karaoguz, John Walley
  • Publication number: 20120230442
    Abstract: A system and method for communicating with a second communication system utilizing a plurality of antennas. Various aspects of the present invention may comprise determining whether communicating with the second communication system utilizing a plurality of antennas in a first configuration, which comprises a beam-forming configuration, is preferable to utilizing a plurality of antennas in a second configuration, which comprises a MIMO or MISO configuration. If it is determined that the first configuration is preferable to the second configuration, the communication system may be configured to communicate with the second communication system by utilizing at least a portion of the plurality of antennas in the first configuration. If it is determined that the second configuration is preferable to the first configuration, then the communication system may be configured to communicate with the second communication system by utilizing at least a portion of the plurality of antennas in the second configuration.
    Type: Application
    Filed: May 23, 2012
    Publication date: September 13, 2012
    Applicant: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, Nambirajan Seshadri, James D. Bennett
  • Publication number: 20120229335
    Abstract: Method and apparatus for locating position of a remote receiver is described. In one example, long term satellite tracking data is obtained at a remote receiver. Satellite positioning system (SPS) satellites are detected. Pseudoranges are determined from the remote receiver to the detected SPS satellites. Position of the remote receiver is computed using the pseudoranges and the long term satellite tracking data. SPS satellites may be detected using at least one of acquisition assistance data computed using a previously computed position and a blind search. Use of long term satellite tracking data obviates the need for the remote receiver to decode ephemeris from the satellites. In addition, position of the remote receiver is computed without obtaining an initial position estimate from a server or network.
    Type: Application
    Filed: March 12, 2012
    Publication date: September 13, 2012
    Applicants: Global Locate, Inc., Broadcom Corporation
    Inventors: Frank Van Diggelen, Sergei Podshivalov, Charles Abraham
  • Publication number: 20120230342
    Abstract: A method and apparatus for more efficient routing of packets in a network is provided. The apparatus may include dynamic routing of packets or portions of packets which avoids congestion and blocking by making local decisions within the network. The apparatus may further include creating and updating routing tables which map switch outputs to available network output ports. Additionally the header of packets entering the network are processed prior to entry or as part of the entry to the network to produce a processed packet. The processed packets or portions of packets preferably include complete route information or a final destination address that enables rapid routing through the network without further processing of the packet header. One or more aspects of the inventions may be implemented in combination with other aspects of the invention to further improve network efficiency.
    Type: Application
    Filed: March 7, 2011
    Publication date: September 13, 2012
    Applicant: Broadcom Corporation
    Inventors: Ofer Iny, Eyal Dagan, Golan Schzukin
  • Publication number: 20120229702
    Abstract: Determining video content type of a video displayed on a LCD and triggering adjustment in drive power of the LCD based on the video content type. The video content type indicates relative content motion of the video. A video content type detection module is one or combination of a software and a hardware and directs the LCD to be driven relative slower or faster based upon video content. The module independently or in conjunction with another module identifies an active window from a plurality of windows corresponding to a plurality of applications running on the host device and sets the drive power of the LCD based on speed of a video displayed on the active window. The module may also adapt LCD drive power based upon user input and/or remaining battery life.
    Type: Application
    Filed: May 22, 2012
    Publication date: September 13, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Jeyhan Karaoguz, James D. Bennett