Patents Assigned to Broadcom Corporation
  • Methods and systems for estimating temporal correlation of a propagation channel
    Patent number: 8514728
    Abstract: Methods and systems for estimating Temporal Correlation (TC) of a propagation channel are provided. In an embodiment, a method for estimating the TC of the propagation channel comprises obtaining multiple channel quality reports of the propagation channel and estimating the TC of the propagation channel based on the multiple channel quality reports.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Djordje Tujkovic, David Garrett, Ying Xia, Erik Lindskog, Brett Schein, Varaprasad Javvadi
  • Subscriber station transceiver allocation of groups of subcarriers between a plurality of transceiver antennas
    Patent number: 8515476
    Abstract: Embodiments for at least one method and apparatus of a subscriber station transceiver allocating and transmitting groups of subcarriers between a plurality of transceiver antennas are disclosed. One method includes the subscriber station transceiver receiving at least one downlink signal through each of the plurality of subscriber station antennas. The subscriber station transceiver characterizes a received signal of the at least one downlink signal over multiple subcarriers. The subscriber station transceiver allocates groups of subcarriers for uplink transmission through each of the plurality of subscriber antennas, wherein the allocation is based on the characterized received signal of the at least one downlink signal over multiple subcarriers.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Sam P. Alex, Louay Jalloul, Robert Lorenz
  • Gain control using a dynamically configurable transformer
    Patent number: 8515368
    Abstract: An apparatus comprising: a baseband filter configured to produce a baseband signal utilizing an input signal; a mixer unit configured to produce an intermediate signal utilizing the baseband signal and a local oscillator signal; and a dynamically configurable transformer configured to provide a gain to the intermediate signal, wherein the gain is dynamically configurable.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Ahmad Mirzaei, John Leete, Hooman Darabi
  • Article of clothing including bio-medical units
    Patent number: 8515548
    Abstract: An article of clothing includes a clothing fabric and a plurality of bio-medical units integrated into the clothing fabric. A bio-medical includes a power harvesting module, a communication module, a processing module, a functional module, a die, and an IC package. The die supports the power harvesting module, the processing module, the communication module, and the functional module. The IC package houses the die and includes a mechanism for adhering to the clothing fabric.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Jeyhan Karaoguz, Pieter Vorenkamp
  • Single stage and scalable serializer
    Patent number: 8514108
    Abstract: According to an exemplary embodiment, a serializer includes upper and lower shift registers configured to perform a load function where parallel input data is loaded from a parallel input bus and a shift function where the parallel input data is shifted to an output register. The upper shift register is configured to perform the load function while the lower shift register performs the shift function, and the lower shift register is configured to perform the load function while the upper shift register performs the shift function. An output register is configured to alternately receive the parallel input data from the upper shift register and the parallel input data from the lower shift register. The upper and lower shift registers and the output register can comprise scan flip-flops.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Hua-Feng Chen, Karthik Chandrasekharan, Ramamurthy Gorti, Gregory Djaja, Douglas Smith
  • Method and system for a receiver with undersampling mixing using multiple clock phases
    Patent number: 8514997
    Abstract: Methods and systems for a receiver with undersampling mixing using multiple clock phases are disclosed and may include undersampling a received wireless signal utilizing multiple undersamplers and clocking each of the undersamplers with a separate clock signal. Each of the clock signals may be at a sampling frequency but with a different phase angle. The difference of the phase angle between each of the clock signals may be adjusted and may be determined by the number of undersamplers. A gain ratio may be configured for two signals summed to generate each of the clock signals for the phase angle adjusting. The two signals may include in-phase and quadrature signals. Each of the summed signals may be normalized utilizing limiters. The sampling frequency may be an integer sub-harmonic of the received signal. The undersamplers may include track and hold or sample and hold circuits.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Method and system for motion compensated picture rate up-conversion of digital video using picture boundary processing
    Patent number: 8514939
    Abstract: Certain aspects of a method and system for motion-compensated picture rate up-conversion (PRUC) of digital video using picture boundary processing may include generating one or more forward motion vectors and one or more backward motion vectors based on extracted picture rate up-conversion (PRUC) data. A cost of performing motion estimation of a particular block along the generated forward motion vectors and the generated backward motion vectors corresponding to the particular block may be calculated. The particular block may be a boundary block. A motion vector with the least cost may be selected and motion compensated to generate a plurality of interpolated pictures.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Xuemin Chen, Brian Heng
  • Systems and methods for implementing a high throughput mode for a MoCA device
    Patent number: 8514860
    Abstract: Systems and methods for providing a high throughput mode for a MoCA device are provided. An electronic device configured for use as a node in a home network is provided. The electronic device may include a preamble generator block. The preamble generator block may include a time domain preamble generator. The time domain preamble generator may be configured to generate a periodic preamble for a MoCA signal. The preamble generator block may also include a doubling circuit configured to double the periodic preamble. Such doubling may preferably obtain an increased maximum periodic preamble.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Moshe Tarrab, Eliahu Shusterman, Yitshak Ohana, Avi Kliger
  • Method and system for non-linear blending in motion-based video processing
    Patent number: 8514332
    Abstract: A method and system for non-linear blending in motion-based video processing is described. Aspects of a system for processing images may include circuitry within a chip that computes a blending factor, with a nonlinear relationship to a motion metric, which defines an amount of motion between a current video picture, and at least one preceding video picture and/or at least one subsequent video picture. At least one pixel in the current video picture may be adjusted based on the computed blending factor. Aspects of a method for processing images may include computing a blending factor, with a nonlinear relationship to a motion metric, which defines an amount of motion between a current video picture, and at least one preceding video picture and/or at least one subsequent video picture. At least one pixel in the current video picture may be adjusted based on the computed blending factor.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventor: Sheng Zhong
  • Single microphone wind noise suppression
    Patent number: 8515097
    Abstract: A technique for suppressing non-stationary noise, such as wind noise, in an audio signal is described. In accordance with the technique, a series of frames of the audio signal is analyzed to detect whether the audio signal comprises non-stationary noise. If it is detected that the audio signal comprises non-stationary noise, a number of steps are performed. In accordance with these steps, a determination is made as to whether a frame of the audio signal comprises non-stationary noise or speech and non-stationary noise. If it is determined that the frame comprises non-stationary noise, a first filter is applied to the frame and if it is determined that the frame comprises speech and non-stationary noise, a second filter is applied to the frame.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Elias Nemer, Wilfrid LeBlanc, Mohammad Zad-Issa, Jes Thyssen
  • RF front-end with on-chip transmitter/receiver isolation using a gyrator
    Patent number: 8514035
    Abstract: An RF front-end with on-chip transmitter/receiver isolation using a gyrator is presented herein. The RF front end is configured to support full-duplex communication and includes a gyrator and a transformer. The gyrator includes two transistors that are configured to isolate the input of a low-noise amplifier (LNA) from the output of a power amplifier (PA). The gyrator is further configured to isolate the output of the PA from the input of the LNA. The gyrator is at least partially or fully capable of being integrated on silicon-based substrate.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Mohyee Mikhemar, Hooman Darabi
  • Reducing motion compensation memory bandwidth through memory utilization
    Patent number: 8514944
    Abstract: A system and method for processing video information. Various aspects of the present invention may provide a decoder module that decodes block encoded video information. The system may, for example, include a first memory module, communicatively coupled to the decoder module, that stores video processing information utilized by the decoder module for decoding a current video block from a current video frame. The system may also, for example, include a second memory module, communicatively coupled to the decoder module, that stores reference video information from a previous video frame utilized by the decoder module for decoding the current video block. In a non-limiting exemplary scenario, the first memory module and the second memory module may be communicatively coupled to the decoder module with independent respective data and/or address buses.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Stephen Gordon, Darren Neuman
  • Bio-medical unit system for physical therapy
    Patent number: 8515533
    Abstract: A system includes bio-medical units and an electromagnetic signal generating unit. A bio-medical unit includes a power harvesting module, a wireless communication module, a processing module, and a functional module that performs physical therapy function and generates physical therapy data. The electromagnetic signal generating unit that includes at least one signal generating module and a plurality of near field communication (NFC) modules. The signal generating module generates one or more signals and an NFC module converts the one or more signals into a component of electromagnetic signal, which the power harvesting module converts into a supply voltage that powers the other modules of the bio-medical unit.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Jeyhan Karaoguz, Pieter Vorenkamp
  • Optical burst receiver with a configurable AC and DC coupling interface
    Patent number: 8515282
    Abstract: A method for enabling AC coupling or DC coupling when receiving burst data signals comprises generating a hold-over pattern, wherein the hold-over pattern is a AC balanced pattern when an AC coupling is required and a low-logic value signal when a DC coupling is required; inputting the generated hold-over pattern to an AC coupling circuit, when no burst data signal is received; inputting only a received burst data signal to the AC coupling circuit, during the reception of such signal; and upon receiving of the entire burst data signal, generating a reset signal causing to input the generated hold-over pattern to an AC coupling circuit.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventor: Amiad Dvir
  • Active power switch topology for switching regulators
    Patent number: 8513930
    Abstract: Embodiments of an active power switch topology for a switching regulator are provided herein. The embodiments of the active power switch topology use two or more active power switches in parallel instead of a single active power switch, as found in conventional implementations. The active power switches are controlled such that they turn-on and -off in a manner that reduces parasitic voltage spikes associated with conventional switching regulators, while not degrading efficiency or other parameters associated with the switching regulator. The active power switch topology can be beneficially used within many switching regulators (e.g., buck, boost, or buck-boost) and, in particular, within hard-switched switching regulators that include active power switches integrated on chip.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventors: Iulian Mirea, Quynh Duong Truc Le, Hua Beng Chan
  • System (s), method (s) and apparatus for reducing on-chip memory requirements for audio decoding
    Patent number: 8515741
    Abstract: Presented herein are system(s), method(s), and apparatus for reducing on-chip memory requirements for audio decoding. In one embodiment, there is presented a method for decoding encoded audio signals. The method comprises fetching a first one or more tables from an off-chip memory; loading the first one or more tables to an on-chip memory; applying a first function to the encoded audio signals using the first one or more tables; fetching a second one or more tables from an off-chip memory after applying the first function; loading the second one or more tables to an on-chip memory; and applying a second function to the encoded audio signals, using the second one or more tables.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: August 20, 2013
    Assignee: Broadcom Corporation
    Inventor: Srinivasa Mpr
  • Passive Optical Network Processor with a Programmable Data Path
    Publication number: 20130209104
    Abstract: A method and apparatus embodying some aspects of a packet processing communication system. The packet processing communication apparatus comprises a packet processor and a microprocessor. The packet processor is configured to process packets belonging to a certain flow through a plurality of processing stages of a programmable data-path. The microprocessor is in communication with the packet processor and is configured to process a user-defined function in the programmable data-path on designated packets belonging to the certain flow. The packets of respective flows to be processed by the microprocessor are designated in a mapping. The designated packets processed by the microprocessor are returned to one of the processing stages of the packet processor for further processing.
    Type: Application
    Filed: March 20, 2013
    Publication date: August 15, 2013
    Applicant: Broadcom Corporation
    Inventor: Broadcom Corporation
  • Method and system for utilizing a reserved and/or out of band channel for maintaining a network connection
    Patent number: 8509126
    Abstract: Aspects of a method and system for utilization of an reserved and/or out of band channel for maintaining a network connection are provided. In this regard, information relating to training of one or more link partners communicatively coupled to an Ethernet link may be exchanged via a reserved and/or out of band channel on the Ethernet link. The reserved and/or out of band channel may be an auxiliary channel as specified by the IEEE802.1AN standard. The reserved and/or out of band channel may be utilized for scheduling training of one or more of the link partners, determining which of the link partners require training, synchronizing training of the link partners, training the link partners based on changes in environmental conditions. The training may comprise configuring an echo canceller a far-end crosstalk canceller, and/or a near-end crosstalk canceller.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: August 13, 2013
    Assignee: Broadcom Corporation
    Inventors: Wael William Diab, Scott Powell
  • Dynamic impedance matching with LNA
    Patent number: 8509720
    Abstract: Aspects of a method and system for LNA adjustment to compensate for dynamic impedance matching are provided. In this regard, an antenna matching network may be configured to maximize received signal strength for a determined frequency and an amplifier gain may be adjusted based on the maximized signal strength such that output levels of the amplifier are between specified limits. The antenna matching network may be programmatically controlled via one or more switching elements. The amplifier gain may be programmatically controlled via one or more bias points. The antenna matching network may be configured for a plurality of frequencies in a frequency band, such as an FM broadcast band, and a configuration for each frequency may be stored. Accordingly, when the receiver is tuned to a frequency, a corresponding configuration may be retrieved from memory.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: August 13, 2013
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Method and system for split threshold voltage programmable bitcells
    Patent number: 8509023
    Abstract: A memory device includes an antifuse. The antifuse is configured to program a bit cell of the memory device. The antifuse is configured with a PMOS device.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: August 13, 2013
    Assignee: Broadcom Corporation
    Inventor: Jonathan Schmitt