Patents Assigned to Broadcom
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Publication number: 20140105222Abstract: Aspects of a method and system for utilization of a reserved and/or out of band channel for managing a data rate of an Ethernet channel are provided. In this regard, a data rate of a network link may be managed via traffic communicated over a reserved and/or out of band channel on said network link. The reserved and/or out of band channel may be an auxiliary channel established in the IEEE 802.3AN standard. Traffic communicated over the reserved and/or out of band channel may enable negotiating a data rate for the link, scheduling a change in the data rate on the link, exchanging link state information, configuring a number of active physical channels on the link, configuring a signal constellation utilized for representing data on said the link, configuring an inter-frame or inter-packet gap, and/or configuring signal levels utilized for signaling on the link.Type: ApplicationFiled: December 11, 2013Publication date: April 17, 2014Applicant: Broadcom CorporationInventors: Wael William Diab, Scott Powell
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Publication number: 20140105043Abstract: A network isolation system may include a network interface, a power level detector, and a processor. The network interface may be configured to receive signals over channels, where the signals include at least one local network signal, e.g. a signal originating on a local network, and at least one non-local network signal, e.g. a signal originating on a non-local network. The power level detector may be configured to determine attenuation values of the received signals. The signal processor may be configured to discard a first signal and reallocate the channel over which the first signal was received, without processing the first signal in a frequency domain, when the attenuation value of the first signal fails to satisfy a signal threshold. In one or more implementations, the signal threshold may differentiate the local network signal from the non-local network signal based at least in part on the determined attenuation values.Type: ApplicationFiled: March 15, 2013Publication date: April 17, 2014Applicant: Broadcom CorporationInventors: Xavier Reves Balleste, Jose Abad Molina, Ildefonso Gomariz Abril, Gerard Reves Vilaplana
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Publication number: 20140105082Abstract: Disclosed is a method of wireless communication for use by a device and the associated device. The method includes receiving a data transfer schedule and determining that the data transfer schedule includes an isochronous traffic stream for the device. After the determining, the method includes extracting an allocation period of the isochronous traffic stream from the data transfer schedule, determining a wakeup schedule for the device having a sleep interval based on the allocation period, and entering a power save mode using the wakeup schedule. The method may further include determining that the data transfer schedule does not include an isochronous traffic stream for the device. After this determining, the method may include requesting a wakeup schedule of a source device, and determining the wakeup schedule for the device having the sleep interval based on the wakeup schedule for the source device entering a power save mode using the wakeup schedule for the device.Type: ApplicationFiled: October 12, 2012Publication date: April 17, 2014Applicant: Broadcom CorporationInventor: Rajesh K. Sinha
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Publication number: 20140105561Abstract: Secure handoff among devices during media playback. Playback of media, from one or more sources, on two or more respective devices is performed in an automated or simplified manner based upon a near field communications (NFC) or like security pairing transaction between those devices. The security pairing may provide direction for any of a number of operational parameters by which the media is to undergo playback on the different respective devices (e.g., source of the media, quality of the media, digital rights management (DRM), an authentication, authorization, and accounting (AAA) protocol, etc.). Certain implementations allow for user interaction to augment or override automatic or seamless operation between the respective devices for continuous playback of media thereon. Successive security pairings may be performed within any of a number of respective devices (e.g., from a first device to a second device, from a second device to a third device, etc.).Type: ApplicationFiled: February 28, 2013Publication date: April 17, 2014Applicant: BROADCOM CORPORATIONInventors: Xuemin Chen, Troy D. Trammel, James D. Bennett
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Method And System For Explicit Feedback With Sounding Packet For Wireless Local Area Networks (WLAN)
Publication number: 20140105159Abstract: Aspects of a method and system for explicit feedback with a sounding packet for wireless local area networks (WLAN). Aspects of the system may include a beamforming block that may enable generation of a plurality of RF chain signals based on a current steering matrix, where the current steering matrix may be a non-identity matrix. A processor may enable transmission of a request for feedback information via the plurality of RF chain signals. The request may contain medium access control (MAC) layer protocol data unit (PDU) data and channel sounding information, which may be encapsulated in a physical (PHY) layer PDU.Type: ApplicationFiled: December 18, 2013Publication date: April 17, 2014Applicant: BROADCOM CORPORATIONInventor: Joonsuk Kim -
Publication number: 20140105202Abstract: Method and system encodes a signal according to a code rate that includes a ratio of uncoded bits to coded bits. An outer encoder encodes the signal into code words. An interleaver converts the code words into a byte sequence for wireless transmission. An inner encoder executes a convolutional code to generate an encoded signal. The encoded signal is transmitted over a plurality of subcarriers associated with a wide bandwidth channel having a spectral efficiency associated with the code rate. The outer encoder includes a Reed-Solomon encoder having a rate that increases the code rate of uncoded bits to coded bits.Type: ApplicationFiled: December 18, 2013Publication date: April 17, 2014Applicant: BROADCOM CORPORATIONInventors: Christopher J. Hansen, Jason Alexander Trachewsky, Rajendra T. Moorti
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Publication number: 20140105172Abstract: Certain aspects of a method and system for time based wireless local area network (WLAN) scanning may include controlling scanning of a plurality of wireless access points in one or more WLANs by a WLAN station based on one or more factors comprising power consumed by the WLAN station based on the scanning, and/or a priority level of one or more media packets to be handled by the WLAN station. The information may be acquired for one or more of the plurality of wireless access points in one or more WLANs during the controlled scanning.Type: ApplicationFiled: December 17, 2013Publication date: April 17, 2014Applicant: BROADCOM CORPORATIONInventor: Daniel Daum
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Publication number: 20140108676Abstract: Aspects of a method and system for an operating system (OS) virtualization-aware network interface card (NIC) are provided. A NIC may provide direct I/O capabilities for each of a plurality of concurrent guest operating systems (GOSs) in a host system. The NIC may comprise a GOS queue for each of the GOSs, where each GOS queue may comprise a transmit (TX) queue, a receive (RX) queue, and an event queue. The NIC may communicate data with a GOS via a corresponding TX queue and RX queue. The NIC may notify a GOS of events such as down link, up link, packet transmission, and packet reception via the corresponding event queue. The NIC may also support unicast, broadcast, and/or multicast communication between GOSs. The NIC may also validate a buffered address when the address corresponds to one of the GOSs operating in the host system.Type: ApplicationFiled: December 19, 2013Publication date: April 17, 2014Applicant: Broadcom CorporationInventor: Kan F. Fan
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Publication number: 20140106813Abstract: A method and apparatus for enabling coexistence of a plurality of communication technologies on a communication device is provided. The method includes receiving one or more first communication events from a first communication technology of the plurality of communication technologies. The method further includes converting the one or more first communication events to one or more second communication events for one or more second communication technologies of the plurality of communication technologies. Converting emulates one or more first peer to peer communication links of the one or more first communication technologies as one or more second peer to peer communication links of the one or more second communication technologies.Type: ApplicationFiled: December 23, 2013Publication date: April 17, 2014Applicant: Broadcom CorporationInventors: Vijay KHAIRMODE, Murali PADMANABHAN
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Publication number: 20140105014Abstract: Aspects of a method and system for an extended range copper transceiver are provided. Reducing the communication rate provided by multi-rate physical (PHY) layer operations in an Ethernet transceiver may extend the range of the Ethernet transceiver over twisted-pair copper cabling from a standard connection length. The Ethernet transceiver may support up to 1 Gbps or up to 10 Gbps transmission rate over copper cabling. The multi-rate PHY layer architecture in the Ethernet transceiver 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 multi-rate PHY layer operations. Reducing the communication rate may also enable utilizing greater insertion loss cabling for a standard connection length.Type: ApplicationFiled: December 20, 2013Publication date: April 17, 2014Applicant: Broadcom CorporationInventors: Bruce Conway, Minshine Shih, Scott Powell, Ali Abaye, Seyed Hamidi
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Publication number: 20140105111Abstract: A system and method supporting over-the-air programming of access device such as, for example, a mobile multimedia handset and a wireless personal digital assistant (PDA) via a broadband access gateway, is disclosed. The broadband access gateway may receive identifying information from the access device via a personal area network and/or a wireless local area network, and may transfer the identifying information to a wide area network or a third party content provider, via a broadband network. The broadband access gateway may enable the registration of the access device with the wide area network, and may receive firmware/software updates and/or provisioning parameters via the broadband network. The gateway may then transfer the firmware/software update and/or provisioning parameters to the access device via the personal area network and/or wireless local area network.Type: ApplicationFiled: December 19, 2013Publication date: April 17, 2014Applicant: Broadcom CorporationInventors: Jeyhan Karaoguz, Marc Abrams, Nambirajan Seshadri
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Publication number: 20140103505Abstract: Methods, systems, and apparatuses for integrated circuit packages are provided. An integrated circuit package, such as a quad flat no-lead (QFN) package, includes a plurality of peripherally positioned leads, a heat spreader, an integrated circuit die, and an encapsulating material. The peripherally positioned leads are attached to a first surface of the heat spreader, and the die is attached to the first surface of the heat spreader within a ring formed by the leads. The encapsulating material encapsulates the die on the heat spreader, encapsulates bond wires, and fills a space between the leads. A second surface of the heat spreader is exposed from the package. End portions of the leads have surfaces that are flush with a surface of the package opposite the second surface of the heat spreader, and that are used as lands for the package.Type: ApplicationFiled: October 16, 2012Publication date: April 17, 2014Applicant: BROADCOM CORPORATIONInventors: Sam Ziqun Zhao, Rezaur Rahman Khan
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Patent number: 8701152Abstract: Different data communication architectures deliver a wide variety of content, including audio and video content, to consumers. The architectures employ channel bonding to deliver more bandwidth than any single communication channel can carry. In some implementations, the communication architectures distribute video programming in the form of MPEG2 TS packets, flagged by marker packets, in a round-robin manner across the communication channels. Channel bonding synchronization information may be present in packets defined above the data-link layer or added to fields within data-link layer frames.Type: GrantFiled: November 9, 2012Date of Patent: April 15, 2014Assignee: Broadcom CorporationInventors: Xuemin Chen, Rajesh Shankarrao Mamidwar, Wade Wan, Steve Krafft, Guangcai Zhou
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Patent number: 8699612Abstract: Techniques are described herein that receive communications transmitted according to different operation modes at a multi-mode, programmable receiver system. The multi-mode, programmable receiver system may receive communication signals from transmit antennas in “cells” (e.g., base station transceivers and/or the like) according to one or more operation modes, using receive antennas. The received signals may be converted and processed by various modules of the multi-mode, programmable receiver system to produce an output signal. The multi-mode, programmable receiver system includes modules that are programmable to be selectively enabled or disabled according to an operation mode in accordance with which the multi-mode, programmable receiver system operates.Type: GrantFiled: October 22, 2012Date of Patent: April 15, 2014Assignee: Broadcom CorporationInventor: Fu-Hsuan Chiu
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Patent number: 8700037Abstract: A method including detecting a preference of a user terminal for a predetermined service, detecting that the current RAT does not provide the predetermined service; monitoring whether another PLMN or RAT of the first PLMN is available; upon detecting that no other PLMN or RAT of the first PLMN is available, maintaining connection to the first RAT of the first PLMN until another PLMN or RAT in the first PLMN becomes available; upon detecting that another PLMN or RAT is available, considering the first RAT of the first PLMN as disabled, and generating an information element to a memory according to which the first RAT of the first PLMN has been marked as disabled, wherein the information element is valid until a predetermined criterion is met and at least beyond a point of time when the user terminal switches to another PLMN and/or to another RAT.Type: GrantFiled: January 15, 2013Date of Patent: April 15, 2014Assignee: Broadcom CorporationInventors: Hannu Petri Hietalahti, Samuli Heikkinen
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Patent number: 8700972Abstract: Embodiments provide an adaptive memory that allows for low voltage modes of operation. In the low voltage modes of operation, the supply voltage provided to the memory is reduced below Vcc(min), which allows for significant savings in the power consumption of circuit components (e.g., the CPU) whose minimum voltage is dictated by Vcc(min). According to further embodiments, the memory can be configured dynamically according to various configurations depending on desired power savings (e.g., target Vcc(min)) and/or performance requirements (e.g., reliability, cache size requirement, etc.).Type: GrantFiled: November 4, 2011Date of Patent: April 15, 2014Assignee: Broadcom CorporationInventors: Paul Penzes, Mark Fullerton, Ajat Hukkoo, John Walley
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Patent number: 8699514Abstract: A method and system for a multi-rate Media Access Control layer (MAC) to Physical layer (PHY) interface is provided. The method to provide a multi-rate Media Access Control layer (MAC) interface comprises receiving a first set of signals, sampling the first set of signals to determine a type of interface to be used to transmit or receive the first set of signals or a subset of the first set of signals, generating a select signal indicating type of interface to be used based on the sampling step and transmitting the first set of signals or a subset of the first set of signals using the interface indicated by the select signal.Type: GrantFiled: January 9, 2008Date of Patent: April 15, 2014Assignee: Broadcom CorporationInventors: Gary S. Huff, Howard A. Baumer
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Patent number: 8700891Abstract: According to one general aspect, a method of using a network device may include receiving, via an ingress port, a data packet that includes a payload portion, a source network address and a destination network address. In various embodiments, the method may also include determining if the data packet includes a security tag that includes a role based authentication tag. In some embodiments, the method may include, if the data packet includes a security tag that includes a role based authentication tag, transmitting, via an egress port, at least the payload portion and the role based authentication tag towards, in a topological sense, the destination network address.Type: GrantFiled: May 8, 2009Date of Patent: April 15, 2014Assignee: Broadcom CorporationInventors: Zheng Qi, Meg Lin, Mark Buer, Nicholas Ilyadis
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Patent number: 8699979Abstract: Aspects of a method and system for compensating for using a transmitter to calibrate a receiver for channel equalization are provided. Various embodiments of the invention may be applicable wireless devices in TDM systems, Bluetooth, and/or WLAN applications, for example. Transmit tones may be generated by a transmitter PLL and the baseband response may be measured for each of the injected tones. The tones may be swept over a frequency range and a corresponding oscillator signal may be mixed with the received signal to determine the response of, for example, the receiver filters. Adjusting any of a plurality of receiver and/or transmitter parameters based on baseband measurements may provide appropriate channel compensation or calibration. Accordingly, the baseband circuitry may generate equalization signals, which may be utilized to adjust receiver and/or transmitter circuitry. This approach may be provide I/Q balancing and transmit filtering calibration after receiver calibration is completed.Type: GrantFiled: April 6, 2012Date of Patent: April 15, 2014Assignee: Broadcom CorporationInventor: Ahmadreza Rofougaran
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Patent number: 8698842Abstract: Systems and methods that provide graphics using a graphical engine are provided. One such system includes at least one graphical pipeline and a graphical engine. The at least one graphical pipeline is coupled to a bus and operable to generate a plurality of graphical layers. The graphical engine is coupled to the bus and operable to receive, over the bus, the plurality of graphical layers. The graphical engine is operable to composite the received plurality of graphical layers into a composite graphical layer, and to store the composite graphical layer in a local memory of the graphical engine.Type: GrantFiled: December 31, 2012Date of Patent: April 15, 2014Assignee: Broadcom CorporationInventors: David A. Baer, Darren Neuman