Patents Assigned to Broadcom
  • Patent number: 9276004
    Abstract: According to one exemplary implementation, an integrated circuit (IC) includes a first memory cell transistor of a read only memory (ROM) array, the first memory cell transistor including a first metal gate of a first work function and having a first threshold voltage. The IC also includes a second memory cell transistor of the ROM array, the second memory cell transistor including a second metal gate of a second work function and having a second threshold voltage. The first memory cell transistor and the second memory cell transistor can be of a first conductivity type. Furthermore, the first memory cell transistor can include a first high-k gate dielectric and the second memory cell transistor can include a second high-k gate dielectric.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: March 1, 2016
    Assignee: BROADCOM CORPORATION
    Inventor: Wei Xia
  • Patent number: 9276631
    Abstract: A power-line communications (PLC) device communicates with a second PLC device via a PLC medium and includes a transmitter and a receiver. The transmitter transmits a Request to Send (RTS) communication to the second PLC device at a first power level. The receiver receives a Clear to Send (CTS) communication from the second PLC device. The transmitter transmits data to the second PLC device at a second power level that is less than the first power level. The transmitter transmits a TDM frame to the second PLC device that includes a preamble and header transmitted at a first power level and at least one special data symbol and a payload transmitted at a second power level that is less than the first power level. The special data symbol resides between the preamble or header and the payload and is usable by the second PLC device for processing of the payload.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: March 1, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Jose Abad Molina, Jonathan Ephraim David Hurwitz
  • Patent number: 9276790
    Abstract: Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications. An appropriately designed phase rotation vector and/or appropriately designed cyclic shift delays (CSDs) are applied to respective sub-band components of the preamble. With appropriately designed CSDs, certain fields within the preamble are not modified. For example, a legacy short training field (L-STF) of the preamble is not changed when using appropriately designed CSDs. The respective CSDs may be implemented as integer multiples of a common CSD (e.g., 0×CSD, 1×CSD, 2×CSD, etc. such that one of the values of such a CSD vector may be zero [0], another may be the common CSD itself, etc.). Also, by employing an appropriately designed phase rotation vector and integer multiples of a CSD to a preamble, the respective peak to average power ratio (PAPR) between different respective fields within the preamble may be minimized.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: March 1, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Jun Zheng, Min Chuin Hoo, Vinko Erceg
  • Patent number: 9276801
    Abstract: A switching module can route packets between a network fabric and a local network, both of which form a closed network such as a vehicular network. The switching module provides local network management functions, and handles packet transfers between the local network and the network fabric. The switching module uses network information, which can include information about packet content type and network topology, to determine a packet's priority, and an appropriate switching protocol to use for processing and routing packets.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: March 1, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Nariman Yousefi, Yongbum Kim, John Walley, Sherman (Xuemin) Chen, Wael W. Diab, Nicholas Ilyadis
  • Patent number: 9276313
    Abstract: An antenna structure of a Radio Frequency (RF) device includes an antenna and a transmission line circuit coupled to the antenna. The transmission line circuit includes a plurality of transmission line circuit elements and a transmission line coupling circuit that couples at least one of the transmission line circuit elements together to form the transmission line circuit based on a transmission line characteristic signal.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: March 1, 2016
    Assignee: BROADCOM CORPORATION
    Inventor: Ahmadreza Rofougaran
  • Patent number: 9277415
    Abstract: A device implements multiple protocols that share overlapping resources. In some cases, a first operation, such as a scan, may have a resource conflict with a second operation associated with a different protocol. In some cases, determining grant normal priority level requests associated with the first operation over those at the normal priority level associated with the second operation may lead to operator-noticeable degradation in device performance. A protocol controller may request a selected portion of the first operation at a low priority level. Requesting the selected portion at the low priority level may allow the second operation to selectively override the portion of the first operation. The selective overriding of the first operation may allow for execution of the first and second operations without operator-noticeable performance degradation.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: March 1, 2016
    Assignee: Broadcom Corporation
    Inventors: Erik John Rivard, Lih-Feng Tsaur, Shawn Shiliang Ding, Hsiao-Kai Wang, Shanshan Jiang, Daochun Liu
  • Patent number: 9277501
    Abstract: A method and telecommunication device in which the telecommunication device is provided with multiple antennas and power amplifiers to provide a beamformed transmit stage. An envelope tracking circuit helps achieve significant power savings in the power amplifier and can be used to provide the power supply for the multiple power amplifiers. A single envelope tracking power supply may be used to produce the supply voltage to the individual power amplifiers that operate on the transmit signal and its phase shifted variant. Accordingly, the user equipment experiences the benefits of both reduced power consumption using the envelope tracker and beam formed transmission.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: March 1, 2016
    Assignee: Broadcom Corporation
    Inventors: Robert Gustav Lorenz, Sriraman Dakshinamurthy
  • Patent number: 9276962
    Abstract: A broadband gateway, which enables communication with a plurality of devices, handles at least one physical layer connection to at least one corresponding network access service provider. The broadband gateway may operate as a home gateway to negotiate with one or more visited gateways, a common authorized service area or domain (ASD) for providing services to the visited gateways. The home gateway may establish one or more corresponding communication links with the visited gateways based on the negotiated common ASD. The home gateway communicates corresponding content for the services to the visited gateways via the established corresponding communication links. The home gateway communicates information about gateway functionalities required for the services to the visited gateways.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: March 1, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Xuemin Chen, Jeyhan Karaoguz, Wael William Diab, David Garrett, David Albert Lundgren, Rich Prodan
  • Patent number: 9274225
    Abstract: A method and apparatus for generating and distributing satellite tracking data to a remote receiver is disclosed. The method for includes extracting from satellite-tracking data initial model parameters representing a current orbit of at least one satellite-positioning-system satellite, computing an orbit model using the initial model parameters, wherein a duration of the orbit model is longer than a duration of the satellite-tracking data, comparing, for an overlapping period of time, the orbit model to the satellite-tracking data; and adjusting the orbit model to match the satellite tracking data for the overlapping period of time so as to form an adjusted orbit model. The adjusted orbit model comprises the long-term-satellite-tracking data.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: March 1, 2016
    Assignee: Broadcom Corporation
    Inventors: Charles Abraham, Frank van Diggelen, Matthew Riben
  • Publication number: 20160057470
    Abstract: A video processing system includes a video device that generates a request corresponding to video content. A conditional access module generates a video signal for transmission to the video device during a first time period, and terminates transmission of the video signal when the request is not authenticated during the first time period. In a further embodiment, the conditional access module generates a video signal for unscrambled transmission to the video device during a first time period, terminates the unscrambled transmission of the video signal at the expiration of the first time period, and continues with scrambled transmission of the video signal after the first time period.
    Type: Application
    Filed: October 26, 2015
    Publication date: February 25, 2016
    Applicant: BROADCOM CORPORATION
    Inventors: Stephen E. Gordon, Jeyhan Karaoguz, Sherman (Xuemin ) Chen, Michael Dove, David Rosmann, Thomas J. Quigley
  • Publication number: 20160055352
    Abstract: Aspects of a method and apparatus for a secure system-on-a-chip (SOC) architecture for multimedia data processing are provided. A processor may configure at least one subsystem within the SOC via at least one unsecured bus while a security processor enables secure functionalities in configured subsystems via at least one secure bus. The unsecure buses may comprise a data bus and/or a control bus, for example. The secure buses may comprise a secure control bus and/or a secure key bus, for example. The configurable subsystems may be multimedia processing units, input and output modules, and/or memory controllers. The security processor may program bits in security registers within the subsystems to enable secure functionalities, such as data routing paths and/or key loading paths, for example. Moreover, the security processor may validate code to be executed by a processor for configuring the SOC subsystems.
    Type: Application
    Filed: November 3, 2015
    Publication date: February 25, 2016
    Applicant: Broadcom Corporation
    Inventor: Xuemin CHEN
  • Publication number: 20160056981
    Abstract: A communication device (alternatively, device) includes a processor configured to support communications with other communication device(s) and to generate and process signals for such communications. In some examples, the device includes a communication interface and a processor, among other possible circuitries, components, elements, etc. to support communications with other communication device(s) and to generate and process signals for such communications. For example, the device's processor receives one or more signals from a communication channel. The processor then processes the one or more signals to generate 2D DFE soft slicer outputs and to decode the one or more signals based on the 2D DFE soft slicer outputs to generate estimates of information encoded within the one or more signals. The processor may process the 2D DFE soft slicer outputs to generate 2D DFE hard decisions and then generates other estimates of the information encoded based on the 2D DFE hard decisions.
    Type: Application
    Filed: August 25, 2015
    Publication date: February 25, 2016
    Applicant: BROADCOM CORPORATION
    Inventors: Ba-Zhong Shen, Mehmet Vakif Tazebay, Chung Ming Tu
  • Publication number: 20160057642
    Abstract: The present invention addresses a method, apparatus and computer program product for enabling enhanced repetition radio resource management measurement mechanism in local area network with flexible time division duplex. For initiating a radio resource management measurement accomplished by a user equipment of a host cell and approaching a neighboring cell, the base station of the host cell transmits information indicating a radio resource management measurement subband and a cross link measurement subframe to the user equipment and not performing an uplink transmission, wherein the radio resource management measurement subband is an uplink prohibited subband that is being used in a downlink transmission of the neighboring cell, and the cross link measurement subframe is a subframe capable of being used for completing an uplink to downlink switch.
    Type: Application
    Filed: April 3, 2013
    Publication date: February 25, 2016
    Applicant: BROADCOM CORPORATION
    Inventors: Lili ZHANG, Jing HAN, Chunyan GAO, Haiming WANG, Wei HONG
  • Publication number: 20160057669
    Abstract: A method, apparatus, and computer program product are provided to manage wireless connection switching. In the context of a method, an Access Point (AP) may determine whether to direct at least one User Equipment (UE) connected to a local area AP to be connected to a macro AP and may cause, in an instance in which it is determined to direct the at least one UE to be connected to the macro AP, at least one signal to be transmitted to the at least one UE, the at least one signal being configured to direct the at least one UE to connect to the macro AP. The signal may take many different forms and may encode further information such as the portion of the traffic that should be served by the macro AP, a particular Physical Random Access Channel (PRACH) resource to be used by the UE, and/or other types of information and/or parameters.
    Type: Application
    Filed: April 3, 2013
    Publication date: February 25, 2016
    Applicant: BROADCOM CORPORATION
    Inventors: Wei HONG, Erlin ZENG, Na WEI, Haiming WANG
  • Patent number: 9268971
    Abstract: A secure processor such as a trusted platform module supports multiple security functions within a single secure processing environment. For example, the secure processor may be configured to perform functions in accordance with the TPM specification and to perform other, non-TPM, security functions. These security functions may be operated independently such that the operation of one security function does not violate or compromising the security of other security functions.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: February 23, 2016
    Assignee: Broadcom Corporation
    Inventors: Douglas Allen, Mark Buer
  • Patent number: 9270358
    Abstract: A communication system includes first and second transmitters, which are coupled to transmit respective first and second Radio Frequency (RF) signals carrying first and second data over a wireless communication channel. The transmitters are coupled to select an operational mode from a group of operational modes and to operate in the selected operational mode. The group of the operational modes includes at least two of a protection mode, wherein the second transmitter serves as backup to the first transmitter, a spatial multiplexing mode, in which the first data is different from the second data and the first and second transmitters transmit simultaneously, and a beam-forming mode, in which the first data is identical to the second data, the second RF signal includes a phase-shifted replica of the first RF signal, and the first and second transmitters transmit simultaneously.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: February 23, 2016
    Assignee: Broadcom Semiconductors Israel Ltd.
    Inventors: Ahikam Aharony, Ragfi Ravid, Jonathan Friedmann
  • Patent number: 9271206
    Abstract: A multiservice communication device includes a plurality of transceivers that wirelessly transceive data with a corresponding plurality of networks in accordance with a corresponding plurality of network protocols. A control channel transceiver transceives control channel data with a remote management unit including local control data sent to the management unit and remote control data received from the management unit. A processing module processes the remote control data and generates a least one control signal in response thereto, the at least one control signal for adapting at least one of the plurality of transceivers based on the remote control data.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: February 23, 2016
    Assignee: Broadcom Corporation
    Inventors: Vinko Erceg, John Walley, Arya Reza Behzad, David Rosmann, Brima B. Ibrahim, Jeyhan Karaoguz
  • Patent number: 9269411
    Abstract: Methods, systems, and computer readable storage medium embodiments for configuring a lookup table, such as an access control list (ACL) for a network device are disclosed. Aspects of these embodiments include storing a plurality of data entries in a memory, each of the stored plurality of data entries including a header part and a body part, and encoding each of a plurality of bit-sequences in the header part of a stored data entry from the plurality of data entries to indicate a bit comparing action associated with a respective bit sequence in the body part of the stored data entry. Other embodiments include searching a lookup table in a network device.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: February 23, 2016
    Assignee: Broadcom Corporation
    Inventors: Cristian Estan, Mark Birman, Prashanth Narayanaswamy
  • Patent number: 9268932
    Abstract: Various aspects are discussed, for example, a method is described for authentication of devices in a wireless network involving NFC (Near Field Communication), wherein a device periodically switches its mode from a read mode, in which it is able to receive authentication data from one or more other devices, to a write mode, in which it sends out authentication data to the one or more other devices, according to a random time slot scheme. The device authenticates itself after having received authentication data from another device during the read mode, and the device switches permanently its mode to the write mode after being authenticated.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: February 23, 2016
    Assignee: Broadcom Corporation
    Inventors: Harsh Dhand, Srinivasa Rao
  • Patent number: 9270601
    Abstract: Network devices perform multiple stage path resolution. The path resolution may be ECMP resolution. Any particular stage of the multiple stage path resolution may be skipped under certain conditions. Further, the network device facilitate redistribution of traffic when a next hop goes down in a fast, efficient manner, and without reassigning traffic that was going to other unaffected next hops, using multiple stage ECMP resolution.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: February 23, 2016
    Assignee: Broadcom Corporation
    Inventors: Meg Pei Lin, Puneet Agarwal, Liav Leshem