Patents Assigned to Broadcom Corporation
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Patent number: 8356190Abstract: Network devices coupled via serial and/or parallel interfaces may determine a power level mode of operation according to an energy efficient network communication control policy and may configure one or more of the interfaces for the lower power mode. The network devices may comprise a PHY, a MAC and/or higher layer devices. The interfaces may comprise a XGMII extender, a XAUI and/or a XFI device. The interfaces may comprise a backplane PHY, for example, a 10 GBASE-KR, a 10 GBASE-KX4 and/or a 1 GBASE-KX PHY which may perform FEC. The interfaces may comprise direct attach copper such as SFP+ and/or InfiniBand and/or 10 GBASE-CX4 PHYs. The interfaces may comprise a pluggable transceiver module. Energy efficient network control data may be communicated to and/or from the network devices which may enter and/or exit a lower power mode of operation.Type: GrantFiled: June 4, 2009Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventor: Wael William Diab
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Patent number: 8355759Abstract: A radio receiver includes a power control module for selectively powering down and powering up radio receiver elements in between known communication periods according to one aspect of the present invention. According to a second aspect of the invention, the radio receiver operates in a low power mode of operation and periodically “sniffs” to determine whether an access point has messages or communication signals to transmit to it.Type: GrantFiled: April 12, 2012Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventor: Jeyhan Karaoguz
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Patent number: 8355328Abstract: Methods and apparatus for dynamic load balancing are disclosed. An example method includes receiving, at a network device, a data packet to be sent via an aggregation group, where the aggregation group comprising a plurality of aggregate members. The example method further includes determining, based on the data packet, a flow identifier of a flow to which the data packet belongs and determining a state of the flow. The example method also includes determining, based on the flow identifier and the state of the flow, an assigned member of the plurality of aggregate members for the flow and communicating the packet via the assigned member.Type: GrantFiled: May 14, 2010Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Brad Matthews, Bruce Kwan, Puneet Agarwal
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Patent number: 8355409Abstract: A system and method of analyzing a powered device (PD) in a Power-over-Ethernet (PoE) system are presented. The system includes an Ethernet interface having a physical layer (PRY) chip capable of providing a signal pulse in addition to physical layer 1 functions. The system further includes a pulse transformer, coupled to the PRY chip, capable of relaying the signal pulse provided by the PRY chip to the PD via the transmit line and a second PRY chip. The first PRY chip receives one or more return pulse signals from the PD, analyzes characteristics such as voltage and/or frequency of the return pulse signal(s), and determines attributes of the PD based on those characteristics. The attributes can include powered device validity and power classification. A method of supplying power to a PD is also presented.Type: GrantFiled: December 30, 2011Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Asif Hussain, Manisha Pandya, Farzan Roohparvar, John Perzow
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Patent number: 8355672Abstract: A Bluetooth host solves the aforementioned problems by evaluating a Bluetooth service provider server ID and by determining which of a plurality of access IDs map to the server ID and, correspondingly, providing a Bluetooth access ID that corresponds thereto. Accordingly, one Bluetooth host may readily gain access to any one of a plurality of different devices and different types of devices. Additionally, the Bluetooth host includes capacity to store and provide additional supporting information according to the type of device that is the Bluetooth service provider. Generally, the Bluetooth host stores a plurality of access or link IDs in relation to a plurality of master device IDs and, upon detecting a beacon, determines what access or link ID to provide and whether to provide additional stored information.Type: GrantFiled: June 8, 2009Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventor: James R. Hinsey
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Patent number: 8355750Abstract: A method for communication includes performing by one or more circuits integrated within a single chip in a first communication device, functions that include storing media and meta-data corresponding to the stored media. The storing may occur at a first location of the first communication device. A channel guide including representations of the stored media that can be selected for presentation on a television in a second location, may be caused based on the meta-data corresponding to the stored media when the first communication device is communicatively coupled to a second communication device at the second location. In response to receiving a selection via the presented channel guide, at least one media file corresponding to the received selection may be displayed based on the meta-data corresponding to the stored media, on one or both of the television and/or a media player in the second location.Type: GrantFiled: September 27, 2011Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Jeyhan Karaoguz, James Bennett
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Patent number: 8355390Abstract: Providing wireless transmission, where in a first transmission mode, transmitting a plurality of frames using a first interframe spacing interval. When in a second transmission mode, transmitting the plurality of frames using a second interframe spacing interval, wherein the second interframe spacing is less than the first interframe spacing.Type: GrantFiled: April 19, 2012Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Rajendra Tushar Moorti, Matthew James Fischer, George Kondylis
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Patent number: 8355693Abstract: A mobile device collects information about application usage and associates collected application information with a location of the mobile device and/or a time that the application is accessed. The application is stored on the mobile device or on an external device and accessed via a network. The application information, location of the mobile device and time the application is accessed are communicated to another device and stored in a storage device which may be operated or managed by a service provider or another entity. The application information may comprise identification of a website, a network device or URL, the application and/or data that is input and/or output from the application. The location of the mobile device and/or the time, are determined utilizing a GNSS receiver and/or utilizing information from a network device. The application information, the location of the mobile device and/or the time may be utilized for targeted advertizing.Type: GrantFiled: March 26, 2010Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Jeyhan Karaoguz, Charles Abraham, Mark Buer, David Garrett, David Albert Lundgren, David Murray
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Patent number: 8354890Abstract: Methods and systems are provided to calibrate an oscillator circuit to reduce frequency pulling as a result of a change in power to a portion of the oscillator circuit. In an embodiment, an oscillator is coupled to a clock buffer circuit and a tuning capacitor configured to tune a frequency of the oscillator to a baseline frequency required for cellular communications. A change in power to the clock buffer circuit initiates a change in an amount of capacitance seen by the oscillator, which negatively impacts the tuning of the oscillator. A register stores a frequency offset caused by the change in power, and the tuning capacitor is adjusted, using the frequency offset, in response to the change in power, such that the total amount of capacitance seen by the oscillator is not changed when the change in power occurs.Type: GrantFiled: October 28, 2010Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Yuyu Chang, John Leete, Walid Ahmed, Wei Luo
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Patent number: 8356158Abstract: One or more methods and systems of improving performance and reducing the size of a translation lookaside buffer are presented. In one embodiment, the method comprises using a bit obtained from a virtual page number to store even and odd page frame numbers into a single page frame number field of a miniature translation lookaside buffer (mini-TLB). In one embodiment, even and odd page frame number fields are consolidated into a single page frame number field. In one embodiment, the mini-TLB facilitates the use of a buffer or memory of reduced size. Furthermore, in one or more embodiments, aspects of the invention may be found in a system and method that easily incorporates and adapts the use of existing control processor instruction sets or commands of a typical translation lookaside buffer.Type: GrantFiled: December 31, 2003Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Kimming So, Jane Lu
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Patent number: 8355688Abstract: Aspects of a method and system for frequency selection using microstrip transceivers for high-speed applications may include determining an operating frequency for operating one or both of a transmitter and a receiver. A frequency response and/or impedance of one or more transmission lines that may be utilized by the transmitter and/or the receiver may be controlled by adjusting one or more capacitances, communicatively coupled to the transmission lines based on the determined operating frequency. The capacitances may be coupled to the one or more transmission line at arbitrary physical spots, and may comprise capacitors and/or varactors. The capacitors and/or the varactors may be adjusted with a digital signal or an analog signal. The capacitances may comprise a matrix arrangement of capacitors and/or varactors. The one or more transmission lines may comprise a microstrip.Type: GrantFiled: February 19, 2008Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Ahmadreza Rofougaran, Maryam Rofougaran
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Patent number: 8355757Abstract: A system and method providing low-power operation in a multimode communication device. Various aspects of the present invention may, for example, include at least one radio module that is adapted to communicate in a plurality of communication modes. The at least one radio module may also be adapted to operate in at least a first power-save mode. At least one module may, for example, be adapted to analyze at least one non-informational aspect of a signal (e.g., a received radio signal) to determine whether a first communication network corresponding to a first communication mode of the plurality of communication modes might be available. The at least one module may then, for example, be adapted to determine, based at least in part on the determined availability of the first communication network, whether to operate the at least one radio module in a respective mode other than the first power-save mode.Type: GrantFiled: December 7, 2005Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Ahmadreza Rofougaran, Arya Behzad, Jeyhan Karaoguz, James D. Bennett
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Patent number: 8355358Abstract: A method and apparatus for communicating between devices is described. In one embodiment, the method comprises running two or more instances of a switch MAC sublayer on a switch and managing the two or more instances of the switch MAC sublayer as multiple logical access points inside the switch.Type: GrantFiled: December 1, 2009Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventor: Zeljko Bajic
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Patent number: 8355706Abstract: A Wireless mobile communication (WMC) device may maintain user preference information, which is unique to the WMC device capabilities and the device user. The WMC device may modify and/or update the user preference information based on device use and information ascertained from applications running on the WMC device itself; for example scheduling applications. The user preference information may be utilized to create context data tags for generated data on the WMC device. Context data tags may comprise such information as time/date stamping, subject information, and/or location information. The context data tags may be utilized to tag the generated data, enabling continuous and improved cataloging. Improved cataloging may enable improved searchability of tagged data. Tagged data alternatively and/or additionally may be transferred and stored in a remote device for improved and secure back-up storage. The remote device may utilize context data tags for cataloging and storing received data.Type: GrantFiled: January 2, 2008Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Thomas Quigley, Alexander G. MacInnis, Arya Behzad, Jeyhan Karaoguz, John Walley, Mark Buer
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Patent number: 8355404Abstract: Aspects of a method and system for an asymmetric physical (PHY) layer in extended reach Ethernet local area networks (LANs) are provided. Reducing the communication rate provided by an asymmetric Ethernet multi-rate PHY may extend the standard distance over twisted-pair cabling where customer premises equipment (CPE) may be located in the MTU. Downstream and upstream rates may be aggregated evenly or unevenly over each twisted-pair wire in the copper cabling. The asymmetric Ethernet multi-rate PHY may support signal-processing operations, such as echo cancellation and/or equalization, which may be applied to the reduced communication rate to enable range extension. The reduced communication rate may be achieved by reducing the symbol rate provided by the asymmetric Ethernet multi-rate PHY. Reducing the communication rate may also enable utilizing cabling with greater insertion loss than those used for a standard connection distance.Type: GrantFiled: September 6, 2006Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Scott Powell, Ali Abaye
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Patent number: 8355442Abstract: Certain aspects of a method and system for automatically turning off motion compensation when motion vectors are inaccurate may include determining quality of a plurality of generated motion vectors. The interpolation of a plurality of output pictures may be controlled based on the determined quality. A plurality of original input pictures may be interpolated when the determined quality of the plurality of generated motion vectors is below a threshold value. A plurality of motion compensated pictures may be interpolated when the determined quality of the plurality of generated motion vectors is above a threshold value. A reduced interpolation mode may be utilized if a generated cut-off value is less than an entry threshold value and/or above an exit threshold value.Type: GrantFiled: November 7, 2007Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventor: Frederick Walls
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Patent number: 8356324Abstract: A video program is streamed in a normal mode to a digital media rendering system on a first connection to the rendering system. Then, while streaming the video program over the first connection, a control signal is received from the rendering system over a second connection with the rendering system. In response to receipt of the control signal, the normal mode of streaming the video program is switched to a trick mode of streaming the video program over the first connection. This is done without closing the first connection. In response to receipt of the control signal, a resynchronization signal is sent to the rendering system over the first connection. The resynchronization signal causes the rendering system to resynchronize the processing of video program data packets after the trick mode of streaming has begun.Type: GrantFiled: September 21, 2007Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventor: Yasantha Nirmal Rajakarunanayake
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Publication number: 20130009701Abstract: The present invention is directed to systems and methods for reducing the distortion of power amplifiers. In particular, methods and systems are described that enable a determination of a pre-distortion correction signal to be determined, which when added to the nominal signal, a reduction in the distortion of the power amplifier results. In addition, methods and systems are described that enable calibration of individual power amplifiers to be accomplished for use with the above described approach. More specifically, the methods and systems are described for use in a MIMO application. These approaches may be applied to on-chip power amplifiers, off-chip power amplifiers, or any combination thereof.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Christopher Young, Elias Simpson
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Publication number: 20130010734Abstract: Embodiments for a method and apparatus of selecting a transmission mode between the subscriber and a base station are disclosed. One method includes determining a predictive window. Instantaneous channel quality measurements are averaged, wherein the averaging is dependent upon a size of the predictive window. A first estimate of the transmission mode is determined based on the averaged instantaneous channel quality measurements. A margin is calculated based on reception of a qualifying downlink transmission. The transmission mode is selected by updating the first estimate with the margin.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Kameswara Medapalli, Djordje Tujkovic, Kamlesh Rath, Louay Jalloul, Bertrand Hochwald
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Publication number: 20130011005Abstract: A device such as a set-top-box, digital TV, DVD player, multi-media player, cellular telephone or digital cinema player that may handle data such as multimedia data and/or audio/video signals, may determine its location. The device may determine its location based on GPS information and send it to an external entity, for example, a service provider. The device may generate a watermark comprising its determined location and may embed or insert the watermark within the data. Also, the generated watermark may comprise one or more of a unique identifier for the device, a source of the data, for example, a service provider, a date and a time. The watermark may be secured via processing, for example, the watermark may be encrypted prior to being embedded. The data may be compressed when embedding the watermark. The watermark embedding process may be handled via a secure embedded processor and/or secure code.Type: ApplicationFiled: August 16, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Rajesh Mamidwar, Xuemin Chen, Robert Brownhill