Patents Assigned to Broadcom Corporation
  • Patent number: 8385877
    Abstract: Fully integrated compact cross-coupled low noise amplifier. A circuitry implementation that includes two pairs of metal oxide semiconductor field-effect transistors (MOSFETs) (either N-type of P-type) operates as an LNA, which can be used within any of a wide variety of communication devices. A majority of the elements are integrated within the design and need not be implemented off-chip, and this can provide for a reduction in area required by the circuitry. A differential 100? input impedance is provided by this design. A higher than typical power supply voltage can be employed (if desired) to accommodate one possible implementation that includes two parallel implemented resistors to ground.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Yuyu Chang, Hooman Darabi
  • Patent number: 8385346
    Abstract: A system and method for forming N0GBASE-T. In one embodiment, N 10GBASE-T PHYs are matched to a N×10G MAC via a shim layer. The shim layer is designed to distribute data received from a higher rate MAC to multiple lower-rate PHYs on the transmit end, and to collect data received from multiple lower-rate PHYs to a higher rate MAC.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Wael William Diab, Scott Powell, Kevin Clyde Brown
  • Patent number: 8385844
    Abstract: A wireless transceiver includes an antenna array that transmits an outbound RF signal containing outbound data to remote transceivers and that receives an inbound RF signal containing inbound data from the remote RF transceivers, wherein the antenna array is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the antenna array to hop among a plurality of radiation patterns based on a hopping sequence. An RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal. In one configuration, a switching section selectively couples a selected one of the antennas in the array to the RF transceiver section, based on the control signal. In another configuration, the RF transceiver section includes an RF section for each antenna in the array.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Saishankar Nandagopalan, Jeyhan Karaoguz, Jason A. Trachewsky, Vinko Erceg, Christopher J. Hansen, Matthew James Fischer, Murat Mese
  • Patent number: 8385237
    Abstract: Ethernet link partners coupled via an Ethernet link that comprises a plurality of channels are operable to transmit and receive at different maximum data rates on different channels. Based on link conditions, a link partner may negotiate a transmission rate and/or accept or reject a reception rate. Based on link conditions, a first link partner is configured to communicate in simplex mode at a first rate via at least one channel and receive in simplex mode at a second rate via at least one channel. The configured data rates are less than or equal to the respective maximum rates or a rate of zero. Link conditions comprise link load or utilization, current or past conditions, PER, BER and SNR. Power may be lowered for transmitters, receivers, near-end and/or far end cross talk cancellers, hybrids, echo cancellers and other components. Channels may be transitioned from duplex mode to simplex.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Wael William Diab, Scott Powell
  • Patent number: 8385148
    Abstract: According to one general aspect, a method may include receiving data from a network device. In some embodiments, the method may include writing the data to a memory bank that is part of a plurality of at least single-ported memory banks that have been grouped to act as a single at least dual-ported aggregated memory element. In various embodiments, the method may include monitoring the usage of the plurality of memory banks. In one embodiment, the method may include, based upon a predefined set of criteria, placing a memory bank that meets the predefined criteria in a low-power mode.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Bruce Kwan, Puneet Agarwal, Brad Matthews
  • Patent number: 8386820
    Abstract: A system and method for integrated thermal monitoring in Power over Ethernet (PoE) applications. Headroom in a particular cable installation is identified using ambient temperature measurement alone or in combination with determined cable characteristics. In calculating an amount of headroom for a particular cable installation, the current capable of being carried over the cable would not be limited by worst-case cable assumptions.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventor: Wael William Diab
  • Patent number: 8385413
    Abstract: A system, method, and apparatus for time stamping compressed video data is disclosed. A delay parameter is generated and can be encoded with the compressed video, representing the number of picture delay between the decoded sequence and the presented sequence. The presentation time stamp is associated with each of the pictures. The presentation time stamp is a function of the delay parameter and other parameters associated with picture associated therewith.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventor: Xuemin Chen
  • Patent number: 8386688
    Abstract: A modular integrated circuit includes a hub module that is coupled to a plurality of spoke modules via a plurality of hub interfaces. The plurality of hub interfaces provide a plurality of signal interfaces between the hub module and each of the plurality of spoke modules, wherein each of the plurality of signal interfaces is isolated from each of the other signal interfaces of the plurality of signals interface, and wherein each of the plurality of signal interfaces operates in accordance with a common signaling format.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Mark N. Fullerton, Robert Morris, Lance Flake, Lawrence J. Madar, III, Sam Liu, Chaoyang Zhao, Vinay Bhasin, Joyjit Nath, Bhupesh Kharwa, Claude G. Hayek
  • Patent number: 8386906
    Abstract: Multi-CSI (Cyclic Shifted Identity) sub-matrix based LDPC (Low Density Parity Check) codes. A CSI parameter set, that includes at least one dual-valued entry and may also include at least one single-valued entry, and/or at least one all-zero-valued entry, is employed to generate an LDPC matrix. One of the single-valued entries may be 0 (being used to generate a CSI matrix with cyclic shift value of 0, corresponding to an identity sub-matrix such that all entries along the diagonal have elements values of 1, and all other elements therein are 0). Once the LDPC matrix is generated, it is employed to decode an LDPC coded signal to make an estimate of an information bit encoded therein. Also, the LDPC matrix may itself be used as an LDPC generator matrix (or the LDPC generator matrix may alternatively be generated by processing the LDPC matrix) for use in encoding an information bit.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Ba-Zhong Shen, Tak K. Lee
  • Patent number: 8385840
    Abstract: An integrated circuit radio transceiver and method therefor includes primary transceiver operation circuitry. In addition to routine transceiver circuitry, the radio transceiver includes a service processor module operable to support redundant operations to facilitate any one of monitoring, test, device management and boot-up sequence functions of the primary transceiver operation circuitry. The service processor module generally has necessary access to hardware components and is operable to control, initialize and monitor the hardware components to assist in test and error recovery.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventor: James Edward King
  • Patent number: 8387106
    Abstract: Certain embodiments of the invention may be found in a method for establishing a communication pathway for subsequent media exchanges between a television display in a first home and storage that contains media in a second home. The method may comprise securely receiving address correlation information associated with the television display in the first home and securely receiving address correlation information associated with the storage in the second home. Affirmative confirmation may be received and/or stored using the received address correlation information associated with at least one of the television display and the storage. The invention may also include verifying that affirmative information has been stored in association with any subsequent media exchanges.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, James Bennett
  • Patent number: 8385435
    Abstract: Embodiments describe a method of measuring noise and interference within transceivers of an OFDM wireless transmission system, or similar communication system, including a number of receivers communicating with one or more base stations in cell or sector arrangements. The transmitter schedules a transmission burst for a non-existent user (receiver) using wireless transmission traffic. In an OFDM system, this corresponds to a certain set of subcarriers in the time/frequency arrangement. Thus, in the receive frame structure, the data and pilot subcarriers are guaranteed to be only noise and interference from adjacent sectors. The receiver can accurately measure the noise and interference without needing to cancel out the transmitted signal. Therefore, the system is assured that there is no desired signal as part of this measurement. The noise and interference measurement process can be appropriately scheduled so that it does not impact the overall throughput of the system.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: David Garrett, Robert Lorenz, Djordje Tujkovic
  • Patent number: 8386246
    Abstract: A system is described that performs frame erasure concealment to generate frames of an output speech signal corresponding to a series of erased frames of encoded bit-stream in a manner that conceals the quality-degrading effects of such erased frames. In one embodiment, responsive to the detection of a first erased frame in the series, a number of steps are performed. These steps include deriving long-term and short synthesis filters based on previously-generated portions of the output speech signal, calculating a ringing signal segment based on the long-term and short-term synthesis filters, and generating a frame of the output speech signal corresponding to the first erased frame by overlap adding the ringing signal segment to an extrapolated waveform. Deriving the long-term filter includes estimating a pitch period based on a previously-generated portion of the output speech signal by finding a lag that minimizes a sum of magnitude difference function.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventor: Juin-Hwey Chen
  • Patent number: 8384596
    Abstract: Methods and systems for inter-chip communication via integrated circuit package antennas are disclosed and may include communicating one or more signals between or among a plurality of integrated circuits via one or more antennas integrated in a multi-layer package. The integrated circuits may be bonded to the multi-layer package. The antennas may be configured via switches in the integrated circuits or by MEMS switches integrated in the multi-layer package. The signals may include a microwave signal and a low frequency control signal that may configure the microwave signal. The low frequency control signal may include a digital signal. The antennas may comprise metal and/or ferromagnetic layers deposited on and/or embedded within the multi-layer package.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8384500
    Abstract: Methods and systems for MEMS switches fabricated in an integrated circuit package are disclosed and may include controlling switching of RF components, and signals handled by the RF components, within an integrated circuit. One or more MEMS switch arrays embedded within a multi-layer package bonded to the integrated circuit may be utilized for the switching and signal control. The RF components and one or more MEMS switch arrays may be integrated in the multi-layer package. The RF components may be electrically coupled to the integrated circuit via the one or more MEMS switch arrays. The MEMS switch arrays may be electrostatically or magnetically activated. The RF components may be coupled to one or more capacitor arrays in the integrated circuit. The RF components may include transformers, inductors, transmission lines, microstrip and/or coplanar waveguide filters and/or surface mount devices. The integrated circuit may be coupled to the multiple-layer package utilizing a flip-chip bonding technique.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8385188
    Abstract: A multi-port Serdes transceiver includes multiple parallel ports and serial ports, and includes the flexibility to connect any of the parallel ports to another parallel port or to a serial port, or both. Furthermore, the transceiver can connect any of the serial ports to another serial port or to a parallel port. The transceiver further includes a switch, a logic core, and a bus. The switch is selectively coupled to at least a first port and a second port. The switch activates the first port and deactivates the second port based on satisfaction of a condition associated with the first port. The logic core operates the serial and parallel ports, and the bus connects the ports. The bus can be described as a “ring” structure (or donut “structure”) around the logic core, and is configured between the logic core and the ports. The ring structure provides efficient communication between the logic core and the ports.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventor: Hoang Tran
  • Patent number: 8386642
    Abstract: Aspects of a method and system for networking are provided. In this regard, one or more circuits and/or processors in a network adapter of a first network device may determine whether to communicate traffic between virtual machines running on the first network device via a path that resides solely within the first network device, or via a path that comprises a second network device that is external to the first network device. The determination may be based, at least in part, on characteristics of the traffic. The determination may be based, at least in part, on capabilities and/or available resources of the network adapter. The determination may be based, at least in part, on management information exchanged between the one or more circuits and/or processors and one or more of: software running on the first network device, the second network device, and a third network device.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventor: Uri Elzur
  • Patent number: 8385444
    Abstract: A receiver includes a bandpass filter module, a sample and hold module, a discrete time bandpass filter module, a discrete time notch filter module, a combining module, and a conversion module. The bandpass filter module filters an inbound wireless that includes a desired signal component and an undesired signal component. The sample and hold module is operable to sample and hold the filtered inbound wireless signal to produce a frequency domain sample pulse train. The discrete time bandpass filter module bandpass filters the frequency domain sample pulse train to produce a bandpass filtered sample pulse. The discrete time notch filter module notch filters the frequency domain sample pulse train to produce a notched filtered sample pulse. The combining module combines the bandpass filtered sample pulse and the notched filtered sample pulse to produce a filtered inbound signal. The conversion module converts the filtered inbound signal into an inbound baseband signal.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: February 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Hooman Darabi
  • Publication number: 20130047023
    Abstract: Adaptive clocking schemes for synchronized on-chip functional Hocks are provided. The clocking schemes enable synchronous clocking which can be adapted according to changes in signal path propagation delay due temperature, process, and voltage variations, for example, in embodiments, the docking schemes allow for the capacity utilization of a logic path to be increased.
    Type: Application
    Filed: December 20, 2011
    Publication date: February 21, 2013
    Applicant: Broadcom Corporation
    Inventors: Paul Penzes, Mark Fullerton
  • Publication number: 20130043849
    Abstract: According to one embodiment, a voltage converter comprises a switching regulator, a driver, and a power stage receiving an input voltage and producing a converted output voltage. The switching regulator is configured to utilize a voltage control path and a current control path to provide feedback to the driver corresponding to a load condition of a load in the power stage, allowing the driver to adjust the converted output voltage in response to the feedback. In one embodiment, the switching regulator utilizes the voltage control path and the current control path to transition control of the voltage converter between a fixed frequency mode control, such as a current-programmed mode (CPM) control, and a variable frequency mode control, such as a hysteretic mode control.
    Type: Application
    Filed: August 18, 2011
    Publication date: February 21, 2013
    Applicant: Broadcom Corporation
    Inventor: Rosario Pagano