Patents Assigned to Broadcom Corporation
  • Patent number: 8194774
    Abstract: A method and apparatus of a receiver estimating a plurality of channels is disclosed. The method includes the receiver receiving a composite signal. The composite signal includes a signal from each of a plurality of transmission antennas, wherein the signal of each transmission antenna includes a delay relative to other signals of other antennas. The receiver estimates channels between the receiver and the plurality of transmission antennas based on amplitude and a phase of a received composite signal, at a plurality of frequencies.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Bertrand Hochwald, Robert G. Lorenz, Harold Artes
  • Patent number: 8195092
    Abstract: A single communication stack may be utilized to setup a data transmission session between wireless devices. A primary physical layer corresponding to the single communication stack may be utilized by the wireless devices to perform discovery, pairing, and security setup operations when setting the data transmission session. A secondary physical layer may be utilized to perform high speed data transmission. The secondary physical layer may be integrated or managed via the single communication stack corresponding to the primary physical layer, and applications running on top of the single communication stack may utilize the secondary physical layer transparently. A portion of the transmitted data may be multiplexed onto other secondary physical layers that may be available to the wireless devices. Alternatively, transmission of data may comprise switching among available secondary physical layers.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Christopher Hansen, Jeyhan Karaoguz
  • Patent number: 8192280
    Abstract: A system and method for retaining, associating, and reloading a user's preferences in a video game system without requiring active participation from the user is provided. The system may include an object control mechanism for receiving a passive indication from the user to perform a fingerprint scan of the user's fingertip. A fingerprint scanner may be coupled to the object control mechanism for transparently performing the fingerprint scan to generate identifying data for the user. If the identifying data for the user matches identifying data for a preexisting user, then preferences associated with the preexisting user may be reloaded. If the identifying data for the user does not match identifying data for a preexisting user, then preferences of the user may retained and associated with the user's identifying data.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventor: Michael James Muth
  • Patent number: 8195229
    Abstract: A device includes a gyrating circuit that generates a motion parameter based on motion of the device. An RF transceiver generates an outbound RF signal from an outbound symbol stream, transmits the outbound RF signal to a remote station of a wireless network, and generates an inbound symbol stream from an inbound RF signal received from the at least one remote station. A processing module processes the motion parameter to produce motion data, converts outbound data into the outbound symbol stream, converts the inbound symbol stream into inbound data, compares current motion data to past motion data, detects when a difference between the current motion data and the past motion data compares unfavorably to a motion change threshold, and include the motion data in the outbound data when the difference between the current motion data and the past motion data compares unfavorably to the motion change threshold.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8195184
    Abstract: Aspects of a method and system for best-M CQI feedback together with PMI feedback may include generating a plurality of feedback messages, which may be communicated from a mobile station to a base station, wherein at least one of the generated plurality of feedback messages may be associated with each corresponding selected one of a plurality of Channel Quality Indicator (CQI) reporting units. The at least one of the generated feedback messages may comprise CQI information and Pre-coding Matrix Index (PMI) information, which may both be associated with the selected one of the plurality of CQI reporting units. At least one other of the generated plurality of feedback messages may comprise an aggregate CQI information, which is based on one or more of the plurality of CQI reporting units.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Mark Kent, Vinko Erceg, Jun Zheng
  • Patent number: 8195008
    Abstract: A method and system for processing video data using multi-pixel scaling in a memory system are provided. The multi-pixel scaling may include reading pixel data for one or more data streams from the memory system into one or more scalers, wherein each of the plurality of data streams includes a plurality of pixels, scaling the pixel via the one or more scalers and outputting the scaled pixels from the one or more scalers. Pixel data may be sequential or parallel. The plurality of scalers may be in parallel, scaling sequential pixel data with independent phase control, or scaling parallel pixel data in substantially equal phase. Pixel data may be transposed, replicated, distributed and aligned prior to reading by scalers, and may be aligned merged and transposed after scaling. Scaling may include interpolation or sub sampling using pixel phase, position, step size and scaler quantities.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Anand Pande, Darren Neuman
  • Patent number: 8195101
    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: October 18, 2011
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8195779
    Abstract: A network device includes a network port, at least one register, and a network information receiver. The network port is configured to send and receive data packets. The at least one register contains configuration data related to the network port. The network information receiver is coupled with the network port and is configured to receive the data packet from the network port, extract low level data from the data packet, and update the at least one register based on the low level data.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventor: David Wong
  • Patent number: 8194548
    Abstract: Aspects of a method and system for duty cycling a network device based on aggregate throughput of the device are provided. In this regard, a limit on aggregate ingress and egress data of a network device during a time interval may be determined. Processing of data by the network device may be duty cycled based on the determination. The device may process data at a first rate during a first portion of the time interval and process data at a second rate during a remaining portion of the time interval. In this regard, portions of the device may be slowed or powered down during the first portion of the time interval. Power consumed by the device during the first portion of the time interval may be less than power consumed by the device during the remaining portion of the time interval.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Wael William Diab, Howard Frazier
  • Patent number: 8193991
    Abstract: An integrated circuit (IC) antenna structure includes a micro-electromechanical (MEM) area, a feed point, and a transmission line. The micro-electromechanical (MEM) area includes a three-dimensional shape, wherein the three dimensional-shape provides an antenna structure. The feed point is coupled to provide an outbound radio frequency (RF) signal to the antenna structure for transmission and to receive an inbound RF signal from the antenna structure. The transmission line electrically coupled to the feed point.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8195226
    Abstract: A system and method providing concurrent multimode communication through multimode signal multiplexing. Various aspects of the present invention may comprise, during a first time period, transmitting a first portion of a first communication in a first communication mode in a serial wireless transmission stream. During a second time period after the first time period, a first portion of a second communication may be transmitted in a second communication mode in the serial wireless transmission stream. Also, during a third time period after the second time period, a second portion of the first communication may be transmitted in the first communication mode in the serial wireless transmission stream. In an exemplary scenario, prior to communicating various communications, transmission time may be allocated between the first and second communication modes. In another exemplary scenario, transmission may be switched between a plurality of communication modes in response to detected communication conditions.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Arya Behzad
  • Patent number: 8194595
    Abstract: A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. The network accommodates real time voice transmission both through dedicated, scheduled bandwidth and through a packet-based routing within the confines and constraints of a data network. Conversion and call processing circuitry is also disclosed which enables access devices and personal computers to adapt voice information between analog voice stream and digital voice packet formats as proves necessary. Routing pathways include wireless spanning tree networks, wide area networks, telephone switching networks, internet, etc., in a manner virtually transparent to the user.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Joseph J. Kubler, Michael D. Morris
  • Patent number: 8193772
    Abstract: A system and method are provided for safely recharging a battery. A current source is coupled to a node and configured to produce a current. The battery is coupled to the node, and is configured to recharge during a recharging cycle based on receiving the current through the node. An overvoltage protection system is coupled between the node and the current source, and configured to disable the current source when a voltage at the node exceeds a threshold value. For example, the current source may be substantially instantaneously disabled when this occurs.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Russell Eliot Radke, Jay Edward Ackerman, Pieter Vorenkamp
  • Patent number: 8193977
    Abstract: Distributing data is disclosed. A GPS signal is received from one or more GPS satellites. GPS data associated with at least a portion of the GPS signal is distributed via a power line. In some cases, at least a portion of the distributed signal is used to establish a reference.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventor: David J. Ryan
  • Patent number: 8194810
    Abstract: A system includes a first transmitter, a second transmitter, and a legacy receiver. The first transmitter transmits information via a first channel to the legacy receiver. The second transmitter transmits a time-shifted version of the information via a second channel to the legacy receiver. The legacy receiver combines the information received via the first channel and the time-shifted information received via the second channel to provide combined information. The legacy receiver processes the combined information as though it is received via a single channel.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventor: George Kondylis
  • Patent number: 8193831
    Abstract: A method and apparatus that controls the clock of a digital circuit, and therefore power consumption, without substantially comprising performance is provided. The apparatus may include monitoring the utilization of a First in First Out (FIFO) buffer. For example in a systems and methods according to the invention, clock speed may be reduced when the FIFO is relatively empty and increased when the FIFO is relatively full. The clock speed may be controlled by a phase locked loop, a clock divider, a clock masking device or a combination of more than one of these methods. Power reduction may also be obtained by controlling the clocking of different stages of a pipelined device. One or more aspects of the inventions may be implemented in combination with other aspects of the invention to further reduce power use.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Aviran Kadosh, Golan Schzukin
  • Patent number: 8193613
    Abstract: According to one embodiment, a semiconductor die having increased usable area has at least six sides. The semiconductor die has a reduced stress at each corner of the die, resulting in smaller keep out zones near the corners of the semiconductor die, which allow the placement of bond pads near each corner of the die. The semiconductor die further allows the placement of active circuitry near each corner of the semiconductor die. One embodiment results in a 5.0% increase in usable area on the semiconductor die.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Ken Jian Ming Wang, Ming Wang Sze
  • Patent number: 8194878
    Abstract: A system and method is described herein in which an audio source wirelessly transmits audio content to a first audio sink over one wireless link and to a second audio sink over another wireless link. The two audio sinks also exchange forward error correction (FEC) streams over a link between the two audio sinks, wherein the FEC streams are generated by FEC encoding the audio content received from the audio source. The audio sinks advantageously use the exchanged FEC information to synchronize the playback of the audio content as well as to improve the robustness of the wireless links with the audio source in a manner that does not consume additional bandwidth on those links.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Laurent Pilati, Mickael Jougit
  • Patent number: 8194808
    Abstract: A method and apparatus is disclosed to process a received single stream communication signal and/or a multiple stream communication. A communications receiver is configured to receive the received communication signal. A communications receiver determines whether the received communication signal includes a single stream communication signal or a multiple stream communication signal. The communications receiver determines whether a received communication signal complies with a known single stream communications standard. The communications receiver determines whether the received communication signal complies with a known multiple stream communications standard. The communications receiver decodes the received communication signal according to the known single stream communications standard upon determining the received communication includes the signal single stream communication signal.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventor: Rohit V. Gaikwad
  • Patent number: 8194756
    Abstract: Processing a video stream using upon Program Clock References (PCRs) contained therein in preparation for transmission to a wireless device. Operation includes receiving video frames of the video stream, buffering the video frames, and extracting PCRs from at least some of the video frames of the video stream. Operation further includes, based upon at least the values of the PCRs, determining transmission parameters, and transmitting video frames of the video stream to the wireless device according to the transmission parameters. Operation may further include determining a round trip delay of transmissions to the wireless device and acknowledgements from the wireless device, adjusting PCRs of at least some video frames of the video stream based upon the round trip delay, and transmitting the video frames of the video stream to the wireless device.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: June 5, 2012
    Assignee: Broadcom Corporation
    Inventors: Thomas J. Quigley, Jeyhan Karaoguz, Sherman (Xuemin) Chen, Michael Dove, David Rosmann, Stephen E. Gordon