Patents Represented by Attorney Garlick & Markison
  • Patent number: 8311506
    Abstract: An radio frequency identification (RFID) receiver front end includes an antenna module coupled to generate a plurality of millimeter wave RFID signals from a remote RFID device. A plurality of a phase adjusters generate a plurality of phase adjusted signals from the plurality of millimeter wave RFID signals, based on a plurality of control signals. A combining module combines the plurality of phase adjusted signals to generate a received signal. A signal strength module generates a signal strength of the received signal. A control module generates the plurality of control signals to reduce the signal strength of the received signal.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: November 13, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8311098
    Abstract: A video transmission system includes a transceiver module that transmits a video signal to a remote device over at least one communications channel wherein the video signal is transmitted as at least one separate video layer stream chosen from, an independent video layer stream and at least one dependent video layer streams that require the independent video layer for decoding. A control module determines at least one channel characteristic of the at least one channel and chooses the at least one separate video layer stream based on the at least one channel characteristic of the at least one channel.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: November 13, 2012
    Assignee: Broadcom Corporation
    Inventors: Stephen E. Gordon, Sherman (Xuemin) Chen, Michael Dove, David Rosmann, Thomas J. Quigley, Jeyhan Karaoguz
  • Patent number: 8311579
    Abstract: A mobile communication device includes a motion sensor for generating motion signals in response to motion of the mobile communication device. A motion data generation module generates motion data based on the motion signals. At least one transceiver sends the motion data to a game device in a gaming mode of operation and transceives wireless telephony data with a wireless telephony network in a telephony mode of operation.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: November 13, 2012
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Maryam Rofougaran, Nambirajan Seshadri, Brima B. Ibrahim, John Walley, Jeyhan Karaoguz
  • Patent number: 8307263
    Abstract: A method begins by a processing module determining dispersed storage preferences for streaming multi-media data. The method continues with the processing module transcoding the streaming multi-media data into transcoded data when the dispersed storage preferences include transcoding. In addition, the method continues with the processing module encoding the transcoded data in accordance with an error coding dispersed storage function of the dispersed storage preferences to produce pluralities of error coded data slices. In addition, the method continues with the processing module outputting the pluralities of error coded data slices to a plurality of data storage units for storage therein.
    Type: Grant
    Filed: June 13, 2010
    Date of Patent: November 6, 2012
    Assignee: Cleversafe, Inc.
    Inventors: Gary W. Grube, Timothy W. Markison
  • Patent number: 8306497
    Abstract: An RF transceiver front-end includes receiver and transmitter front-ends. The receiver front-end includes 1st and 2nd antennas, a ninety degree phase shift module and an LNA module. The 1st and 2nd antennas receive inbound RF signals and provide a first directional circular polarization. The ninety degree phase shift module phase shifts the RF signals received by the 2nd antenna. The LNA module amplifies the RF signals received by the 1st antenna and the shifted RF signals. The transmitter front-end includes a PA module and 3rd and 4th antennas, which provide a second directional circular polarization. The PA module amplifies outbound RF signals to produce amplified outbound RF signals and amplified orthogonal outbound RF signals. The 3rd antenna transmits the amplified outbound RF signals and the 4th antenna transmits the amplified orthogonal outbound RF signals.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: November 6, 2012
    Assignee: Broadcom Corporation
    Inventors: Seunghwan Yoon, Franco De Flaviis, Ahmadreza (Reza) Rofougaran
  • Patent number: 8306569
    Abstract: An integrated circuit (IC) includes an RF section, a DSP, and a plurality of processors. The RF section and the DSP process an inbound RF signal to produce inbound data and process outbound data to produce an outbound RF signal. In addition, the DSP converts an outbound analog audio signal into an outbound digital audio signal and converts an inbound digital audio signal into an inbound analog audio signal. A first processor converts the inbound data into the inbound digital audio signal and converts the outbound digital audio signal into the outbound data. A second processor performs a user application that includes at least one of generation of the inbound analog audio signal and generation of the outbound analog audio signal and performs an operating system algorithm to coordinate operation of the user application.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: November 6, 2012
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Maryam Rofougaran, Claude G. Hayek, Frederic Christian Marc Hayem, Vafa James Rakshani, Hooman Darabi
  • Patent number: 8301991
    Abstract: LDPC (Low Density Parity Check) coded modulation symbol decoding. Symbol decoding is supported by appropriately modifying an LDPC tripartite graph to eliminate the bit nodes thereby generating an LDPC bipartite graph (such that symbol nodes are appropriately mapped directly to check nodes thereby obviating the bit nodes). The edges that communicatively couple the symbol nodes to the check nodes are labeled appropriately to support symbol decoding of the LDPC coded modulation signal. The iterative decoding processing may involve updating the check nodes as well as estimating the symbol sequence and updating the symbol nodes. In some embodiments, an alternative hybrid decoding approach may be performed such that a combination of bit level and symbol level decoding is performed. This LDPC symbol decoding out-performs bit decoding only. In addition, it provides comparable or better performance of bit decoding involving iterative updating of the associated metrics.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Ba-Zhong Shen, Hau Thien Tran, Kelly Brian Cameron
  • Patent number: 8299834
    Abstract: Various circuit techniques for implementing ultra high speed circuits use current-controlled CMOS (C3MOS) logic fabricated in conventional CMOS process technology. An entire family of logic elements including inverter/buffers, level shifters, NAND, NOR, XOR gates, latches, flip-flops and the like are implemented using C3MOS techniques. Optimum balance between power consumption and speed for each circuit application is achieve by combining high speed C3MOS logic with low power conventional CMOS logic. The combined C3MOS/CMOS logic allows greater integration of circuits such as high speed transceivers used in fiber optic communication systems.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventor: Armond Hairapetian
  • Patent number: 8302158
    Abstract: A method for secure access and communication of information in a distributed media network is disclosed and includes detecting, at a first geographic location, when a media peripheral is communicatively coupled to at least one computing device at the first geographic location within the distributed media network. The media peripheral may be validated for use at the first geographic location using at least one identifier. The at least one identifier may be associated with the media peripheral. The at least one identifier may be used to facilitate communication by and/or to the media peripheral over the distributed media network. The at least one identifier associated with the media peripheral and at least one identifier of a user may be requested utilizing the media peripheral. The at least one identifier associated with the media peripheral is a serial number of the media peripheral.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, James Bennett
  • Patent number: 8300747
    Abstract: Various aspects of a system for an adaptive VBLAST receiver for wireless MIMO detection may comprise utilizing log likelihood ratios (LLR) to selectively cancel interference in a received signal when information contained in one or more layers is encoded. Following the selective cancellation of interference, further computations may be performed on the residual received signal. Various aspects of the invention may comprise a linear detector with improved performance in comparison to some conventional VBLAST receivers. Performance may be measured by, for example, a packet error rate (PER) for a given signal to noise ratio (SNR) associated with the received signal.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventor: Ling Su
  • Patent number: 8300948
    Abstract: De-ringing operation for image processing. A selective image processing means is presented herein by which high frequency content is preserved while also eliminating ringing within digital images, and this is achieved without introducing aliasing. Based on the analysis of neighboring pixels, one or more of multiple filter modules and/or multiple image filtering/rocessing means is/are selectively applied to generate an output sample for a given pixel location. Two measures (e.g., local activity (LA) and edge strength (ES)) are calculated based on processing at least two different groups of pixels near a desired output sample. One of these groups of pixels may be a subset of another of the groups of pixels. By analyzing these two measures (e.g., LA and ES), selective processing of pixels near the desired output location ensures that high frequency content within the digital image is preserved with substantially reduced and/or eliminated ringing therein.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Bo Zhang, Ashish Koul, Olivier Francois Joseph Harel
  • Patent number: 8296346
    Abstract: A channel-select decimation filter capable of operating in multiple bandwidth modes includes a first low pass filter stage, a variable gain stage, a subtraction module a second low pass filter stage and a down-sampling module. The first low pass filter stage includes a first programmable delay module for filtering input signals to produce first low pass filtered signals. The variable gain stage applies a programmable gain to the input signals to produce gained input signals. The subtraction module subtracts the first low pass filtered signals from the gain input signals to produce first stage signals. The second low pass filter stage includes a second programmable delay module for filtering the first stage signals to produce channel-selected signals. The first programmable delay module, second programmable delay module and programmable gain are programmed to implement one of the multiple bandwidth modes.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: October 23, 2012
    Assignee: Broadcom Corporation
    Inventors: Henrik T. Jensen, Brima B. Ibrahim
  • Patent number: 8295797
    Abstract: A receiver front end includes a plurality of in-phase and quadrature phase receive processing blocks operable at first and second frequency bands and further includes a plurality of filtering and amplification blocks disposed within a corresponding ingoing signal path, a plurality of received signal strength indicator (RSSI) blocks coupled to receive an ingoing analog signal from a corresponding plurality of nodes disposed throughout the ingoing signal path, each of the plurality of RSSI blocks producing a signal strength indication, and wherein a baseband processor is operable to receive a selected signal strength indication and to produce at least one gain setting to at least one amplification block within the in-phase or quadrature phase receive processing blocks. In operation, the baseband processor receives a signal strength indication from each RSSI block to determine a total amount of gain and appropriate gain distribution within the receive signal path.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: October 23, 2012
    Assignee: Broadcom Corporation
    Inventor: Amit G. Bagchi
  • Patent number: 8295829
    Abstract: A Wireless Local Area Network (WLAN) is operated in conjunction with a wired Local Area Network (wired LAN) to service a premises, e.g., a campus setting. The wired LAN services the wired communication needs of the premises and serves as the wired backbone of the WLAN. A plurality of Wireless Access Points (WAPs) of the WLAN couple to the wired backbone and are serviced by the LAN. With this shared structure, wired network components, e.g., multi-layer switches, manage the operation of WLAN components, i.e., WAPs. Such management includes ensuring that the WAPs provide sufficient bandwidth to support wireless packetized voice communications. Additional management operations include WAP access, wireless terminal registration, and channel resource allocation, among others.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: October 23, 2012
    Assignee: Broadcom Corporation
    Inventors: Jeffrey L. Thermond, Richard G. Martin
  • Patent number: 8295378
    Abstract: Various aspects of a method for minimum mean square error soft interference cancellation (MMSE-SIC) based sub-optimal maximum likelihood (ML) detection for a multiple input multiple output (MIMO) wireless system may comprise selecting at least one constellation point in a constellation map based on at least one of a plurality of received symbols. A number of the at least one constellation point may be less than or equal to a number of previously selected constellation points in a previous constellation map. At least one of the plurality of received symbols may be decoded based on the selected at least one constellation point.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: October 23, 2012
    Assignee: Broadcom Corporation
    Inventors: Ling Su, George Kondylis
  • Patent number: 8295260
    Abstract: A first plurality of characteristics are received from a first client device relating to transmissions received by the first client device from both an access point and a second client device. A second plurality of characteristics are received from the second client device relating to transmissions received by the second client device from both the access point and the first client device. The first plurality of characteristics and the second plurality of characteristics are both assessed. Based on the assessment, a least one of a plurality of customized power levels is selected for transmissions by the access point to the first client device and the second client device.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: October 23, 2012
    Assignee: Broadcom Corporation
    Inventor: James D. Bennett
  • Patent number: 8295385
    Abstract: The present invention provides a method and apparatus for initiating a multiple input multiple output (MIMO) communication. The method and apparatus includes processing that begins by transmitting a frame formatted in accordance with a default MIMO active transmitter-receiver antenna configuration to a target receiver. The processing continues by receiving at least one response frame from the target receiver. The processing continues by determining a number of receiver antennas of the target receiver from the at least one response frame.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: October 23, 2012
    Assignee: Broadcom Corporation
    Inventor: Jason A. Trachewsky
  • Patent number: 8295782
    Abstract: A method includes determining whether information is to be transmitted via a radio frequency (RF) bus that supports direct intra-device communication between at least three circuits in a millimeter wave frequency band. When the information is to be transmitted via the RF bus, the method determines whether the RF bus is available. When the RF bus is available, the information is converted into RF bus signal, access to the RF bus is secured, and after access to the RF bus is secured, the RF bus signal is transmitted via the RF bus.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: October 23, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8295793
    Abstract: A configuration controller generates one or more control signals based on channel data. The channel data includes requirements data received via the stream of inbound data, wherein the requirements data includes at least one of: a quality of service requirement, and a signal latency limit. A receiver includes an RF receiver section and a receiver processing module that are configured in response to the control signal.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: October 23, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8295824
    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: Grant
    Filed: April 11, 2012
    Date of Patent: October 23, 2012
    Assignee: Broadcom Corporation
    Inventors: Vinko Erceg, Arya Reza Behzad, David Rosmann, Brima B. Ibrahim, Jeyhan Karaoguz, John Walley