Patents Assigned to Broadcom
  • Patent number: 8175543
    Abstract: A method and system for wireless communication using integrated clock generation for Bluetooth and FM transmit and FM receive functions may include generating a clock signal to enable transmission and/or reception of Bluetooth signals; and clocking a Direct Digital Frequency Synthesizer (DDFS) via the generated clock signal to generate one or more signals by the DDFS that enable transmission or reception of FM signals. The generated clock signals for the Bluetooth and for the FM transmit and receive functions may include an in phase and quadrature phase component. Time Division Duplex of FM transmission and reception and simultaneous FM transmission and FM reception may be simulated by switching the control frequency word at a certain rate. The DDFS may also receive control words to compensate for frequency changes in the Bluetooth LO. The FM signals reception and transmission may be controlled by a bi-directional coupler.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8174999
    Abstract: A home network, in one embodiment including a home wiring system; a demarcation point unit in electrical communication with the home wiring system; and a home network module in electrical communication with the home wiring system. The home network module is adapted for connection to a home electronic device. The demarcation point unit passes data to and receives data from the home electronic device through the home network module.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventors: Avi Kliger, Rami Kopelman, Nachum Avishay, Alon Shtern, Amir Wasserman
  • Patent number: 8175544
    Abstract: A system and method providing variable-frequency IF conversion in a multimode communication device. Various aspects of the present invention provide a multimode communication device comprising at least one RF signal receiver adapted to receive at least a first RF signal corresponding to a first communication protocol and a second RF signal corresponding to a second communication protocol. A controllable frequency source may, for example, be adapted to output a mixing signal characterized by one of a plurality of selectable frequencies. Such selectable frequencies may, for example, comprise a first frequency corresponding to the first communication protocol and a second frequency corresponding to the second communication protocol. A mixer may, for example, receive a received RF signal from the RF signal receiver, receive a mixing signal from the controllable frequency source, and convert the received RF signal to an IF signal utilizing the received mixing signal.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventors: Arya Behzad, Ahmadreza Rofougaran
  • Patent number: 8175002
    Abstract: There is provided a method of managing power utilization for use by a first communication system having a first communication mode and a second communication mode, for communication over a PHY connection through a cable connecting the two systems. The method comprises establishing the PHY connection with the second communication system, detecting interoperability of the two systems in the first communication mode, determining a length of the cable connecting the first communication system to the second communication system, selecting a mode based on the length of the cable, if the detecting detects interoperability of the first communication system and the second communication system in the first communication mode, selecting the second communication mode as the mode, if the detecting does not detect interoperability of the first communication system and the second communication system in the first communication mode, communicating data using the PHY connection through the cable in the mode.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventor: James Muth
  • Patent number: 8176380
    Abstract: Algebraic method to construct LDPC (Low Density Parity Check) codes with parity check matrix having CSI (Cyclic Shifted Identity) sub-matrices. A novel approach is presented by which identity sub-matrices undergo cyclic shifting, thereby generating CSI sub-matrices that are arranged forming a parity check matrix of an LDPC code. The parity check matrix of the LDPC code may correspond to a regular LDPC code, or the parity check matrix of the LDPC code may undergo further modification to transform it to that of an irregular LDPC code. The parity check matrix of the LDPC code may be partitioned into 2 sub-matrices such that one of these 2 sub-matrices is transformed to be a block dual diagonal matrix; the other of these 2 sub-matrices may be modified using a variety of means, including the density evolution approach, to ensure the desired bit and check degrees of the irregular LDPC code.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventors: Ba-Zhong Shen, Joseph Paul Lauer, Christopher J. Hansen, Kelly Brian Cameron
  • Patent number: 8176530
    Abstract: Systems and methods that prevent unauthorized access in a communications network are provided. In one embodiment, a system that prevents unauthorized access to a network device may include, for example, a network device and a headend. The headend may be coupled to a communications network. The network device may be deployed in a home environment and may be communicatively coupled to the communications network via the headend. The headend may be adapted, for example, to determine whether a request to access the network device is authorized.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, James D Bennett
  • Patent number: 8176398
    Abstract: A method is used that substantially simultaneously trellis encodes data to be modulated onto multiple tones. The embodiments of the present invention comprise the steps of: (a) using a first input operand comprising state bits for a first trellis stage; (b) using a second input operand comprising a plurality of input data bits; and (c) generating an output comprising output data bits and output state bits from a first or later trellis stage.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventors: Mark Taunton, Timothy Martin Dobson
  • Patent number: 8175108
    Abstract: A configurable memory includes an interface section, a plurality of memory modules, and an internal configuration section. The interface section includes a millimeter wave (MMW) transceiver and interfaces with one or more external components. Each the plurality of memory modules includes a memory MMW transceiver and a plurality of memory cells. The internal configuration section includes a memory management unit and a memory management MMW transceiver. The memory management unit is operable to determine configuration of at least some of the plurality of memory modules to form a memory block, identify an interface MMW transceiver to provide a wireless link to the memory block, and generate a configuration signal based on the determined configuration and the identified interface MMW transceiver. The memory management MMW transmits the MMW configuration signal to the identified interface MMW transceiver and the MMW transceivers of the memory modules.
    Type: Grant
    Filed: August 30, 2008
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Timothy W. Markison
  • Patent number: 8175563
    Abstract: A method for processing wireless information is disclosed and may include performing by one or more circuits within a single-chip multi-band RF receiver, the one or more circuits comprising a filter, generating at least one control signal based on a signal strength of a baseband frequency signal generated by the one or more circuits within the single-chip multi-band RF receiver. A bandwidth of the filter may be adjusted using the generated at least one control signal. The generated baseband frequency signal may be filtered utilizing the bandwidth adjusted filter. A frequency response signal of the filter may be determined using a reference frequency signal. An attenuated reference frequency signal may be generated by attenuating the reference frequency signal. The attenuated reference frequency signal may be compared with the frequency response signal. The at least one control signal may be generated based on the comparison.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventor: Spyridon Charalabos Kavadias
  • Patent number: 8175545
    Abstract: A communication device includes an integrated circuit having an on-chip thermal sensing circuit that generates a temperature signal based on a temperature of the integrated circuit. A processing module processes the temperature signal to generate temperature information that can be transmitted to a remote device or processes the temperature signal to generate control for adjusting transmit and/or receive characteristics of an RF transceiver.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza Reza Rofougaran
  • Patent number: 8174958
    Abstract: Aspects of a method and system for a reference signal (RS) timing loop for OFDM symbol synchronization and tracking may include tracking symbol timing in an Orthogonal Frequency Division Multiplexing (OFDM) signal based on at least a reference symbol set. A receiver timing may be adjusted based on at least the symbol timing. The symbol timing may be tracked by generating an output signal as a function of a guard time ?tg in a phase discrimination feedback loop. The reference symbol (RS) set may be generated in an RS extraction module or circuit, from at least a fast Fourier transform of the received OFDM signal. The receiver timing may be coarsely adjusted and then finely adjusted. The coarse receiver timing adjustment may be based on processing at least a primary synchronization signal and a secondary synchronization signal.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventor: Mark Kent
  • Patent number: 8175557
    Abstract: An integrated circuit radio receiver includes radio frequency (“RF”) front-end circuitry to receive a wireless signal and to produce digital data. The integrated circuit radio receiver includes a baseband processor is operable to process the digital data, in which the baseband processor is operable to produce a format designation based on the digital data. The baseband processor includes a plurality of digital filtering logic in which each of the digital filtering logic includes a level of digital filtering. The baseband processor further includes logic operable to select between each digital filtering logic of the plurality of digital filtering logic based upon the format designation, and to process the digital data with the selected level of digital filtering.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventor: Weidong Li
  • Patent number: 8175185
    Abstract: A radio frequency (RF) transmitter includes a transmitter processing module that generates a processed signal and a modulating signal based on outbound data. An up-conversion module up-converts the processed signal to generate an up-converted signal. A programmable filter module generates a first plurality of delayed signals from the up-converted signal and that generates a filtered up-converted signal by combining the up-converted signal and the first plurality of delayed signals, wherein a delayed signal of the first plurality of delayed signals is scaled based on one of a first plurality of coefficients, wherein the first plurality of coefficients are selected based on a control signal. A polar amplifier amplifies and amplitude modulates the filtered up-converted signal based on the modulating signal to generate a transmit signal. A processing module generates the control signal to attenuate at least one RF spur of the up-converted signal.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8176139
    Abstract: Methods are disclosed for automatically monitoring and controlling at least one media peripheral device in a media exchange network. A communication link is established between a media management system (MMS) and a media peripheral (MP) device in the media exchange network and an operation of the MP device is automatically selected via the MMS over the communication link. Finally, the operation of the MP device is automatically carried out (i.e., performed). Also, after establishing a communication link between a media management system (MMS) and a media peripheral (MP) device in the media exchange network, at least one status parameter of the MP device may be automatically monitored via the MMS over the communication link. The status parameter may be automatically stored and/or displayed via the MMS.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, James D. Bennett
  • Patent number: 8174330
    Abstract: Aspects of a method and system for an energy efficient temperature sensing crystal integrated circuit (TSCIC) are provided. In this regard, one or more circuits in a temperature sensing crystal integrated circuit (TSCIC) may be configured to control power consumption of the TSCIC. The one or more circuits in the TSCIC may comprise a memory and a crystal. The one or more circuits in the TSCIC may be operable to generate an indication of temperature of the crystal. The one or more circuits in the TSCIC may be configured to control a current supplied to the crystal within the TSCIC, wherein the configuring is based on phase noise requirements of a signal generated by the crystal. Generation of the temperature indication may be enabled or disabled. The enabling or disabling may occur based on a rate of change of a temperature in the TSCIC.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventors: Evan McCarthy, John Walley
  • Patent number: 8174451
    Abstract: Aspects of a method and system for a configurable antenna in an integrated circuit package are provided. In a hybrid circuit comprising an integrated circuit bonded to a multi-layer package, one or more antenna parameters may be adjusted by configuring a plurality of antenna elements via one or more switching elements. In this regard, the antenna elements and/or the switching elements may be within and/or on the multi-layer package and/or within the integrated circuit. The switching elements may be MEMS switches on and/or within the IC and/or the multi-layer package. The IC may be bonded or mounted to the underside of the package and signals may be communicated between the IC and the package via one or more solder balls. The IC may comprise suitable logic, circuitry, and/or code for configuring the antenna elements. The antenna elements may be configured based on desired polarization, antenna gain, and/or frequency.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza Rofougaran
  • Patent number: 8176229
    Abstract: A dual mode digital interface supports the HyperTransport Standard and at least one other interface standard. The dual mode digital interface includes a plurality of data line deskew/sampling blocks, a data group deskew module, and an enablement control module. The plurality of data line deskew/sampling blocks deskew and sample incoming data on respective data lines based upon a clock signal to produce deskewed data. The data group deskew module receives deskewed data from each of the plurality of data line deskew/sampling blocks and removes inter-data line skew from the deskewed data to produce received data. The plurality of data line deskew/sampling blocks and the data group deskew module can be configured in a first mode when supporting an aspect of the HyperTransport Standard and configured in a second mode when supporting the at least one other interface standard.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventors: Laurent R. Moll, Manu Gulati
  • Patent number: 8176378
    Abstract: Aspects of a method and system for a transmitting antenna selection failure recover mode are presented. Aspects of the system may include a transmitting mobile terminal that enables selection of a sequence of protocol data units (PDU), for example a sequence of sounding frames, which may be transmitted during an antenna selection procedure. During transmission of the selected PDU sequence, the transmitting mobile terminal may receive an antenna selection failure indication frame. The transmitting mobile terminal may enable retransmission of at least one previously transmitted PDU in the PDU sequence based on the failure indication. Transmission of subsequent PDUs in the PDU sequence may resume after the retransmission. Alternatively, upon receipt of the failure indication frame the transmitting mobile terminal may restart the selected frame sequence from the beginning, or may select a subsequent PDU frame sequence.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventors: Carlos Aldana, Vinko Erceg, Matthew J. Fischer
  • Patent number: 8175646
    Abstract: A handheld computing unit includes a MMW transceiver, a hardware section, an operating system section, and an application section. When the handheld computing unit is in a extended mode: the hardware section is operably coupled to a hardware section of an extended computing unit; the operating system section is operably coupled to an operating system section of the extended computing unit; and the application section is operably coupled to an application section of the extended computing unit. When the handheld computing unit is in a network mode the hardware section is operably coupled to a hardware section of at least one other handheld computing unit.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: May 8, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Publication number: 20120106350
    Abstract: A bridge routing module can be incorporated into a closed network fabric, such as a vehicular network. The bridge routing module includes an interface circuit to be coupled to other elements of the closed network fabric, for example other bridge routing modules or switch modules. The bridge routing module includes memory to store information associating packet content types with packet routing parameters, among other things. A processing module included in the bridge routing module analyzes packets to identify the type of content carried by the packets, and determines packet routing parameters based on the packet's content type. Ingress and egress of the packet are controlled in accordance with the packet routing parameters determined by the processing module.
    Type: Application
    Filed: June 29, 2011
    Publication date: May 3, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: NARIMAN YOUSEFI, YONGBUM KIM, JOHN WALLEY, SHERMAN (XUEMIN) CHEN, WAEL W. DIAB, NICHOLAS ILYADIS