Patents Assigned to Broadcom Corporation
  • Patent number: 8212933
    Abstract: Noise-reduced pixels may be generated using outputs of filtering via a first filter and/or a second filter, and/or a blend of both outputs. Blending a current pixel and an output of filtering of current pixel via the first filter may generate a first blended current pixel. Filtering via the first filter may be based on the current pixel, a previous collocated pixel, and a next collocated pixel. Blending the current pixel and an output of filtering of current pixel via the second filter may generate a second blended current pixel. Filtering via the second filter may be based on the current pixel and a collocated pixel of the previous second blended video image or of the previous filtered output video image. Blending the first blended current pixel and the second blended current pixel using an adaptive blending factor may dynamically generate a filtered output pixel.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Sheng Zhong
  • Patent number: 8214206
    Abstract: A technique is described herein for reducing audible artifacts in an audio output signal generated by decoding a received frame in a series of frames representing an encoded audio signal in a predictive coding system. In accordance with the technique, it is determined if the received frame is one of a predefined number of received frames that follow a lost frame in the series of the frames. Responsive to determining that the received frame is one of the predefined number of received frames, at least one parameter or signal associated with the decoding of the received frame is altered from a state associated with normal decoding. The received frame is then decoded in accordance with the at least one parameter or signal to generate a decoded audio signal. The audio output signal is then generated based on the decoded audio signal.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Jes Thyssen, Juin-Hwey Chen, Robert W. Zopf
  • Patent number: 8212392
    Abstract: Methods and systems for supplying power to multiple voltage islands using a single supply source are disclosed. Aspects of one method may include providing power to a first of a plurality of voltage islands, and individually controlling providing of power to each of a remaining portion of the plurality of voltage islands. For example, when an electronic system is first powered on, a low current voltage source may be used to supply power to a primary voltage island. As a higher current voltage source becomes available, power derived from the higher current voltage source may be provided to the primary voltage island and to secondary voltage islands. Power to each of the secondary voltage islands may be, for example, individually controlled via a power MOS transistor. The power MOS transistor may also be configured to allow a faster blocking time than unblocking time.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Ariel Pickholz, Long Nguyen, Shay Mizrachi
  • Patent number: 8213862
    Abstract: Embodiments of the present invention enable energy transfer via short-range RF communication between a main device and an associated device, thereby allowing the main device to energy charge the associated device. Accordingly, the need for a separate charger for the associated device can be eliminated. Embodiments of the present invention are suitable for applications in which the main device and the associated device operate in close proximity to each other. Further, embodiments of the present invention are suitable for applications in which the associated device is more energy-constrained than the main device. According to embodiments, energy transfer applications can be supported using near field communication (NFC). In an embodiment, energy transfer via NFC is enabled between a Bluetooth enabled cellular phone and a Bluetooth headset. In another embodiment, energy transfer via NFC is enabled between a Bluetooth enabled digital camera and a Bluetooth enabled digital frame.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventor: James Michael Muth
  • Patent number: 8213937
    Abstract: Aspects of a method and system for dynamic adjustment of power, antenna direction and frequencies in a femtocell network are provided. In this regard, a communication system may comprise a plurality of femtocells, one or more base stations, and a femtocell management entity that coordinates operation of the plurality of femtocells. One or more parameters may be communicated from one of the plurality of femtocells and/or one or more base stations to the femtocell management entity. The femtocell management entity may be enabled to utilize the one or more parameters to determine configuration information for one of the plurality of femtocells and/or for one or more remaining ones of the plurality of femtocells. One of the plurality of femtocells may be enabled to receive the determined configuration information from the femtocell management entity. One of the plurality of femtocells may be configured utilizing the received determined configuration information.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Vinko Erceg, Charles Abraham, Xuemin Chen, Wael William Diab, Victor T Hou, Jeyhan Karaoguz, Mark Kent
  • Patent number: 8214665
    Abstract: Aspects of a method and system for queue management for energy efficient networking are provided. In various embodiments of the invention a network device may determine whether to transition into or out-of an energy-saving mode of operation, and arm an EEN trigger by buffering the EEN trigger in a queue and/or setting one or more flags. The network device may transition into or out-of the energy-saving mode upon the EEN trigger being read from the queue or upon the queue becoming empty while the trigger is armed. Upon the occurrence of an event meeting one or more criteria prior to the EEN trigger being read from the queue or prior to the queue being empty, the EEN trigger may be disarmed. The network device may disarm the EEN trigger by deleting the EEN trigger from the queue and/or by resetting the flag.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Wael William Diab
  • Patent number: 8213864
    Abstract: A Bluetooth host in a normal mode is enabled to monitor activities at USB endpoints. A Bluetooth USB radio has one or more active Bluetooth connections with peer Bluetooth radios. When each of the Bluetooth connections is in sniff mode, the Bluetooth host enables cancellation of normal USB activities at USB endpoints to enter a low power mode. The Bluetooth connections are still alive while the Bluetooth host is in the low power mode. In the low power mode, the Bluetooth host is enabled not to poll the bulk endpoint and to poll a USB interrupt endpoint in extended intervals for Bluetooth data received from the Bluetooth USB radio. The Bluetooth host is enabled to switch from the low power mode to the normal mode to process the received Bluetooth data over the bulk endpoint when a specific HCI event is received over the interrupt endpoint.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Victor Zhodzishsky, Shawn Shiliang Ding
  • Patent number: 8214721
    Abstract: A system and method for achieving higher data rates in physical layer devices. Costs imposed by large data rate increases represented by generational increases in Ethernet standards activities are avoided through physical layer device modifications that enable marginal increases in data bandwidth. Building-block reuse can be promoted through the selective use of clocking rate increase, increase in coding efficiency, and bit reuse.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Wael William Diab, Scott Powell, Yong Kim
  • Patent number: 8212612
    Abstract: Disclosed is a closed-loop class-D amplifier circuit including a modulated reference signal generator that provides a modulated reference signal in a feed-forward path, where the reference signal is modulated corresponding to an input signal. The closed-loop class-D amplifier circuit further includes a comparator to generate a control signal based on a comparison of the modulated reference signal and a correction signal, which in turn is produced by filtering a combination of the input signal and a feedback signal. The closed-loop class-D amplifier circuit also includes a pulse generator to generate a pulse-width-modulated signal to drive an output stage of the closed-loop class-D amplifier based on the control signal.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Jungwoo Song, Xicheng Jiang, Minsheng Wang, Todd L. Brooks
  • Patent number: 8213452
    Abstract: A method, system, and computer program product for ordering grants of upstream bandwidth in a two-way grant-based communication system, such as a DOCSIS-based communication system. Typically, a central controller, such as a CMTS, sends a grant message to a set of end user devices, e.g., cable modems, wherein the message defines when each end user device can transmit upstream. The invention first determines, for each end user device, the time needed for processing the grant message. The central controller then constructs the grant message, such that grants for the end user devices associated with the shortest grant message processing times occur early in the grant message and represent the earliest grants. Grants for end user devices associated with the longest grant message processing times occur later in the grant message and represent later grants.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Victor T. Hou
  • Patent number: 8213309
    Abstract: Systems and methods for reducing reservation request overhead in a communications network in which devices are connected via a coax network are provided. A method for managing transmission of data over a MoCA network according to the invention may include monitoring data transmission requirements at a node on the network; generating statistics of the data transmission requirements; predicting transmission requirements from the statistics; and reserving future transmission opportunities in view of the predicted transmission requirements.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Avraham Kliger, Philippe Klein, Yitshak Ohana
  • Patent number: 8213611
    Abstract: A two-stage block synchronization and scrambling module includes a synchronization PRNG module, a scramble PRNG module, a summing module, and a storage module. The synchronization PRNG module is clocked once per N+1 bit PCS frame (N arbitrary) to produce a synchronization bit and a pseudo-random starting state for the scramble PRNG. The scramble PRNG module is clocked N times per PCS frame to produce a cipher stream starting with a pseudo-random state from the synchronization PRNG. The summing module is operably coupled to sum the cipher stream and a PCS frame payload to produce scrambled payload. The storage module is operably coupled to store the scrambled payload with the synchronization bit. Synchronization bits from successive frames are a running bit-serial representation of the synchronization PRNG state and are used by the receiver to synchronize with the transmit scrambler.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Gottfried Ungerboeck, Scott Richard Powell, Ba-Zhong Shen
  • Patent number: 8213141
    Abstract: A Power over Ethernet electrostatic discharge protection circuit has a first diode with an anode coupled to a positive power port and a cathode coupled to an ESD protection port. A second diode has an anode coupled to ground and a cathode coupled to the positive power port. A third diode has an anode coupled to a negative power port and a cathode coupled to the ESD protection port.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Agnes Woo
  • Patent number: 8213492
    Abstract: A processing module produces improved main channel estimate. This process involves initially estimating the channel impulse response. This result is based on and combined with a known sequences such as that provided by training sequences of the midamble within RF bursts. From this combination, it is possible to produce an estimated signal from a convolution of the channel impulse response and midamble. The estimated signal may be cancelled or subtracted from the received signal to produce a clearer image of the disturber signal. A blind data recovery performed upon the disturber signal. The recovered disturber data may be used as a reference for disturber channel estimation in order to produce a disturber channel impulse response. With the estimated disturber channel impulse response and the recovered disturber data, an estimated disturber signal may be reconstructed and subtracted from the received signal. This allows the cancellation of the estimated disturber signal.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Arkady Molev-Shteiman, Arie Heiman, Huaiyu (Hanks) Zeng
  • Patent number: 8214851
    Abstract: A method, system and apparatus for constructing dispatch tables match application program interface service routines. The invention includes reading a header file of the application program interface. The invention further includes generating a corresponding dispatch table for at least one device indicated in the header file, wherein the corresponding dispatch tables are generated based on information read from the header file. The invention further includes verifying that the information contained in the dispatch tables is consistent with current requirements of the application program interface.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Daniel Talayco, Brian Baird
  • Patent number: 8212149
    Abstract: Magnetic field distribution and mutual capacitance control for transmission lines are provided. A first circuit board is fabricated by attaching a reference plane layer to a dielectric material layer, and attaching a first trace to the second surface of the dielectric material. A surface profile of the reference plane layer is modified to decrease a resistance of a return current signal path through the reference plane layer, to reduce a magnetic field coupling between the first trace and a second trace. A second circuit board is fabricated by attaching a reference plane layer to a dielectric material layer, attaching a trace to the dielectric material, and forming a solder mask layer on the dielectric material layer over the trace. An effective dielectric constant of the solder mask layer is modified to reduce or increase a mutual capacitance between the first trace and a second trace on the dielectric material.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Sampath Komarapalayam Velayudham Karikalan, Rezaur Rahman Khan
  • Patent number: 8213180
    Abstract: A printed circuit board (PCB) assembly is provided that includes a PCB, an integrated circuit package, an electromagnetic interference (EMI) shield ring, and a heat sink lid. A first surface of the package is mounted to a first surface of the PCB. The EMI shield ring is mounted to the first surface of the PCB in a ring around the package. A first surface of the heat sink lid includes a recessed region and first and second supporting portions separated by the recessed region. The heat sink lid is mated with the EMI shield ring such that the package is positioned in an enclosure formed by the EMI shield ring and the recessed region of the heat sink lid. A second surface of the package may interface with a surface of the recessed region.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Sam Ziqun Zhao, Calvin Wong
  • Patent number: 8214893
    Abstract: A system and method is provided for communication of information in a mobile communication device (WMCD) configured to network connection may include discovering via a wireless mobile communication device, available communication resources based on acquired biometric data for a user of the WMCD, and communicating multimedia information between the WMCD and one or more of the discovered available resources. The acquired biometric data may include physical and behavioral biometric data to be authenticated and validated by a pattern recognition database. A connection between the WMCD and one or more discovered available resources may be established through linking the acquired biometric data to resources in available local or remote network. The established connection may enable the WMCD to consume or redirect media from the available resources and may be dynamically adjusted and updated based on dynamic sensing of the acquired biometric data in the available network or available resources.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Thomas Quigley, Alexander MacInnis, Arya Behzad, Jeyhan Karaoguz, John Walley, Mark Buer
  • Patent number: 8213395
    Abstract: Aspects of a method and system for dual mode operation in wireless networks are presented. Aspects of the system include a communicating device that selects an RF channel and a physical layer type. The communicating device may process signals received via the selected RF channel based on the selected physical layer type. The communicating device may determine whether a beacon frame has been detected base on the signals that were received via the selected RF channel and processed based on the selected physical layer type. When a frame is not detected, the communicating device may determine a signal energy level for the received signals. The communicating device may establish an association with an existing network based on detection of the beacon frame or the communicating device may transmit an originating beacon frame based on the determined signal energy level.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Jason Trachewsky, Christopher Hansen, Jeyhan Karaoguz, Saishankar Nandogopalan
  • Patent number: 8213602
    Abstract: There is provided a method for encrypting a data stream using multiple algorithms. In one embodiment, a first portion of the data stream is encrypted with a first algorithm utilizing a first key to generate a first encrypted portion. The first algorithm can be, for example, a Triple Data Encryption Algorithm (TDEA). Data indicating the first algorithm and the first key is then transmitted. Then, the first encrypted portion of the data stream is transmitted. Thereafter, a second portion of the data stream is encrypted with a second algorithm utilizing a second key to generate a second encrypted portion. The second algorithm can be, for example, a Single Data Encryption Algorithm (SDEA). Next, data indicating the second algorithm and the second key is transmitted. Thereafter, the first encrypted portion of the data stream is transmitted.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: July 3, 2012
    Assignee: Broadcom Corporation
    Inventor: Rajesh Mamidwar