Patents Assigned to Broadcom
  • Patent number: 9054866
    Abstract: A multimode DSL (digital subscriber line) line driver circuit is disclosed. The line driver circuit includes a switch network that enables the line driver circuit to be switched between multiple DSL communication configurations. Upon receipt of a mode control signal, the line driver circuit switches from a first DSL communication configuration to a second communication configuration. A DSL communication signal configured according to the second DSL communication configuration is received at the line driver circuit. The received DSL communication signal is amplified and/or filtered by the line driver circuit. The received DSL communication signal is transmitted from the line driver circuit. In one example implementation, the line driver circuit may be switched from an asymmetric digital subscriber line (ADSL) configuration to a very high speed digital subscriber line (VDSL) configuration, and may be switched from the VDSL configuration to the ADSL configuration.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: June 9, 2015
    Assignee: Broadcom Corporation
    Inventors: Nir Matalon, Sumant Ranganathan
  • Patent number: 9054973
    Abstract: Certain aspects of a method and system for Ethernet congestion management may include transmitting one or more data packets in a network flow from a source node to a destination node. The source node may be enabled to receive one or more congestion notification frames based on detecting congestion at one or more switches in the network flow. A probe packet comprising a departure timestamp, Ts, may be transmitted from the source node to the destination node based on receiving one or more congestion notification frames. The arrival rate, Ra, of one or more data packets at the destination node may be calculated based on an arrival timestamp, Ta, inserted into the probe packet at the destination node. A rate limiter at the source node may be enabled to limit a rate of one or more data packets based on the calculated arrival rate, Ra.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: June 9, 2015
    Assignee: Broadcom Corporation
    Inventor: Patricia Ann Thaler
  • Patent number: 9054982
    Abstract: A system and a method include a port extender communicatively linked to a controlling bridge. Network data is received from a local network peer downstream to the port extender. Whether a destination of the network data is a recognized downstream network peer of the port extender is determined. The network data is selectively routed according to whether the destination of the network data is a recognized downstream network peer of the port extender.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: June 9, 2015
    Assignee: Broadcom Corporation
    Inventors: Mohan Kalkunte, Nicholas Kucharewski
  • Patent number: 9055297
    Abstract: Presented herein are systems, methods, and apparatus for displaying pictures. In one embodiment, there is presented a decoder system for decoding video data. The decoder system comprises a port and a transport processor. The port receives packets carrying encoded video data from a plurality of video streams. The transport processor changes a header to encoded video data from at least one of the packets. The header identifies a particular one of the plurality of video streams, wherein the at least one packet is from the particular one of the plurality of video stream.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: June 9, 2015
    Assignee: BROADCOM CORPORATION
    Inventor: Qin-Fan Zhu
  • Patent number: 9054794
    Abstract: A modem or associated computing or testing device is configured to detect the presence of one or more faults that affect DSL communications, and upon their detection, generate, for example, an indication, communication or message that recommends corrective action. In this context, a fault is generally caused by one or more unfiltered devices, impulsive noises, malfunctioning modems, or other factor that does not affect measured attenuation or measured noise, but does affect the signal-to-noise ratio (SNR) of the link. In addition to being able to generate a message guiding a user through corrective action, the system can estimate the rate impact of the detected fault.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: June 9, 2015
    Assignee: BROADCOM CORPORATION
    Inventors: Christopher Cunningham, Jianming Zhu
  • Patent number: 9055291
    Abstract: In a video processing system, a method and system for generating a transform size syntax element for video decoding are provided. For high profile mode video decoding operations, the transform sizes may be selected based on the prediction macroblock type and the contents of the macroblock. A set of rules may be utilized to select from a 4×4 or an 8×8 transform size during the encoding operation. Dynamic selection of transform size may be performed on intra-predicted macroblocks, inter-predicted macroblocks, and/or direct mode inter-predicted macroblocks. The encoding operation may generate a transform size syntax element to indicate the transform size that may be used in reconstructing the encoded macroblock. The transform size syntax element may be transmitted to a decoder as part of the encoded video information bit stream.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: June 9, 2015
    Assignee: BROADCOM CORPORATION
    Inventors: Stephen Gordon, Douglas Chin
  • Patent number: 9054668
    Abstract: In one embodiment, front end circuitry for an electronic appliance, the front end circuitry comprising: a first port configured to conduct signals from a signal source, the signals comprising a first signal and a second signal; a first filter coupled to the first port, the first filter configured to filter the first signal according to a first frequency band and output the filtered first signal for further processing; a second filter coupled to the first port and arranged in parallel with the first filter, the second filter configured to absorb the second signal according to a second frequency band that is a stopband for the first filter; and an impedance load coupled between an output of the second filter and ground.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: June 9, 2015
    Assignee: BROADCOM CORPORATION
    Inventor: Ignacio Gorostegui
  • Patent number: 9054762
    Abstract: A transmitter circuit with a passive mixer network includes a first outbound signal path configured to carry a first outbound signal. The transmitter circuit includes a second outbound signal path configured to carry a second outbound signal. The transmitter circuit includes N passive mixers coupled to the first and second outbound signal paths and configured to up-convert the first and second outbound signals from a first frequency to a second frequency based on a clock cycle, where N is a positive even integer. The first and second outbound signals are passed through the N passive mixers during each phase of 2*N phases in the clock cycle. The transmitter circuit also includes N radio frequency signal paths coupled to an output of respective ones of the N passive mixers and configured to receive the first and second outbound signals in the second frequency during each phase of the clock cycle.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: June 9, 2015
    Assignee: Broadcom Corporation
    Inventors: Ahmad Mirzaei, Mohyee Salahelden Mikhemar, Meng-An Pan, Rahul Magoon
  • Patent number: 9055121
    Abstract: A social networking system offers a variety of fixed and intelligent services and social device resources participating as members in a social network (SNET) group. Such members may include, for example, social billing and payment services, digital assistants and artificial intelligence functions, robotic control and training services, media content storage and playback services, data backup services, services that support distributed processes such as distributed research projects, networking elements such as network attached storage (NAS), firewalls, proxies, etc. In various embodiments, such services and resources may become available upon being selectively docked or otherwise associated (e.g., through docking of a supporting device) with a SNET group by a human member or third party via a docked user device. Selection of available services may be supported through a visual menu provided by a member device or support service.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: June 9, 2015
    Assignee: Broadcom Corporation
    Inventors: Yasantha N. Rajakarunanayake, James D. Bennett
  • Publication number: 20150156039
    Abstract: The present disclosure is directed to a system and method for continually adapting a channel equalizer that includes a precoder based on changing channel conditions. The precoder is described as being implemented in the exemplary context of a 10GBASE-T physical layer (PHY) device. 10GBASE-T is defined by the Institute of Electrical and Electronics Engineers (IEEE) 802.3an standard and uses four pairs of copper transmission lines to provide an aggregate data rate of 10 gigabits per second. In this exemplary context, the system and method of the present disclosure are configured to exploit an undefined, auxiliary bit in the 10GBASE-T transmission frame to continually send updates to the coefficients of the precoder based on changing channel conditions. The updates can he sent in the transmission frames together with application-level data.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 4, 2015
    Applicant: Broadcom Corporation
    Inventors: Tooraj ESMAILIAN, John Lock Creigh
  • Publication number: 20150154405
    Abstract: Members of a social network (SNET) circle can share content with other members of SNET circle, members of the same SNET that are not members of the same circle, or send content to people or devices outside of SNET. Trust chain can be used alone or in conjunction with other security measures to assign or select an appropriate level of content protection and SNET access. A trust rating or level associated with a trusted human member can be conferred to a social network device, allowing that device to be included in the trust chain. Trust can also be conferred from a trusted social network device to a child device of the social network device. A trust processing module can work in cooperation with one or more trust authorities to establish initial and updated overall trust levels of a human or device associated with the SNET.
    Type: Application
    Filed: February 6, 2015
    Publication date: June 4, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Sherman (Xuemin) Chen, Marcus C. Kellerman, Wael W. Diab, Yasantha N. Rajakarunanayake, James D. Bennett
  • Publication number: 20150155881
    Abstract: A digital-to-analog conversion circuit operates by selectively charging or discharging members of a plurality of capacitors. Charging of the capacitors occurs during a reset period while digital-to-analog conversion occurs as the capacitors are discharged. Those capacitors that are charged or discharged are selected from the plurality of capacitors based on a digital input. The analog output includes the charge discharged from the selected capacitors.
    Type: Application
    Filed: February 13, 2015
    Publication date: June 4, 2015
    Applicant: Broadcom Europe Limited
    Inventors: Jonathan Ephraim David Hurwitz, Steven Collins
  • Publication number: 20150155889
    Abstract: Selective merge and partial reuse LDPC (Low Density Parity Check) code construction for limited number of layers Belief Propagation (BP) decoding. Multiple LDPC matrices may be generated from a base code, such that multiple/distinct LDPC coded signals may be encoded and/or decoded within a singular communication device. Generally speaking, a first LDPC matrix is modified in accordance with one or more operations thereby generating a second LDPC matrix, and the second LDPC matrix is employed in accordance with encoding an information bit thereby generating an LDPC coded signal (alternatively performed using an LDPC generator matrix corresponding to the LDPC matrix) and/or decoding processing of an LDPC coded signal thereby generating an estimate of an information bit encoded therein. The operations performed on the first LDPC matrix may be any one of, or combination of, selectively merging, deleting, partially re-using one or more sub-matrix rows, and/or partitioning sub-matrix rows.
    Type: Application
    Filed: February 5, 2015
    Publication date: June 4, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Ba-Zhong Shen, Andrew J. Blanksby, Jason A. Trachewsky
  • Publication number: 20150155953
    Abstract: A system and method to reduce and/or eliminate interference between an indoor unit (MU) and an outdoor unit (ODU) in a split backhaul architecture. The interference can be present in, for example, an N-plexer in the IDU and/or the ODU. For example, interference on an outbound signal that is introduced by an inbound signal in the N-plexer can be reduced and/or eliminated by introducing a cancellation signal that is combined with the outbound signal. Further, the N-plexer can include two or more signal cancellation modules configured such that the output of a first signal cancellation module is connected to both a common pathway and the input of the second signal cancellation module. The input of the first signal cancellation module and the output of the second signal cancellation module can be configured as the Tx and Rx pathways of the IDU and/or ODU with respect to the common pathway.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 4, 2015
    Applicant: Broadcom Corporation
    Inventors: Serguei DEMINE, Hanan LEIZEROVICH, Yaacov STURKOVICH
  • Publication number: 20150155771
    Abstract: Systems, apparatuses, and methods provided for ping-pong charge pumps. Flying capacitors present in ping-pong charge pumps are operated out of phase to increase equalization periods. Out-of-phase operation also decreases voltage differences between flying capacitors during equalization periods thus decreasing ping-pong charge pump output voltage ripple and snapback. The voltages of the flying capacitors may be equalized without the use of an equalization switch. Differential control currents that are based on the voltage difference between the flying capacitors are used to enable or disable the flying capacitors from driving an output load of the ping-pong charge pump during certain phases of operation. A capacitor with a lower voltage may be disabled, thus providing for voltage equalization as the enabled capacitor sources current to the output load. The flying capacitors are also equalized during overlapping time periods in which the flying capacitors are charging.
    Type: Application
    Filed: December 23, 2013
    Publication date: June 4, 2015
    Applicant: Broadcom Corporation
    Inventors: I-Ning Ku, Hui Zheng, Jungwoo Song, Xicheng Jiang
  • Publication number: 20150155894
    Abstract: A wireless device performs antenna tuner updates at times that minimize adverse effects on transmit and receive channels of the wireless device. The wireless device includes an antenna, an RF front end, an antenna tuner circuit and a processing module. The antenna tuner circuit is configured to substantially match a source impedance of the RF front end to a load impedance of the antenna based on a control signal. The processing module is configured to identify an update time for providing the control signal to the antenna tuner circuit that minimizes adverse effects on at least one of the transmit channel and the receive channel.
    Type: Application
    Filed: December 23, 2013
    Publication date: June 4, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Sriraman Dakshinamurthy, Bongseok Park, Michael James Graziano, Robert Gustav Lorenz
  • Publication number: 20150156682
    Abstract: Mobile terminated call establishment during inter radio access technology (IRAT) re-direction. Handovers between different respective radio access technologies (RATs) may be performed (e.g., IRAT redirection procedure) such that a given wireless communication device may be in communication with a given RAT cell, and then switch from that RAT cell to another RAT cell (e.g., a target RAT cell). This transition may be from a 3G cell to a target 4G cell. During such a redirection procedure, there may be some instances in which the target RAT cell may not be available immediately, and a device can check back with the first/original RAT cell during the search for the target RAT cell. That is to say, there may be some duration of time during the search for the target RAT cell in which that particular cell may not be available, and the device checks for pages in the first/original RAT cell.
    Type: Application
    Filed: February 5, 2015
    Publication date: June 4, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Ozgur Ekici, Khaled Jazzar
  • Publication number: 20150155739
    Abstract: A wireless power system can include wireless power receive circuitry for generating power from a wireless signal, and a wireless power transceiver for communicating with a wireless power transmission unit. The wireless power system can transition from an idle state to different power management states depending on whether or not communication has been established with the wireless power transmission unit. Different modules can be activated, different supply voltages, and different clock signal rates can be used in different power management states.
    Type: Application
    Filed: December 30, 2014
    Publication date: June 4, 2015
    Applicant: Broadcom Corporation
    Inventors: John Walley, Jeyhan Karaoguz, Ahmadreza Rofougaran, Nambirajan Seshadri, Reinier Hendricus Maria Van Der Lee
  • Patent number: 9049058
    Abstract: A communication device is configured to perform symbol mapping of bits to generate modulation symbols using one or more modulations. The device may employ a blended modulation composed of bit labels or symbols having different numbers of bits per symbol and different modulations. For example, the device may symbol map bit labels/symbols having first number of bits per symbol to first modulation, and the device may symbol map labels/symbols having second number of bits per symbol to second modulation. The device may be configured to perform forward error correction (FEC) or error correction code (ECC) and coding of information bits to generate coded bits that subsequently undergo symbol mapping. The device may be configured to operate based on different operational modes based on substantially uniform steps of rates, or bits per symbol, and energy per bit or symbol to noise spectral density ratio (Eb/N0 or Es/N0).
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: June 2, 2015
    Assignee: Broadcom Corporation
    Inventors: Thomas J. Kolze, Bruce J. Currivan
  • Patent number: 9048201
    Abstract: The disclosure is directed to a semiconductor wafer, integrated circuit product, and method of making same, having multiple non-singulated chips separated by scribe lines, comprising a plurality of seal rings, each seal ring surrounding a corresponding chip and disposed between the corresponding chip and adjacent scribe lines. Well resistors are disposed below the seal rings and probe pads disposed in the scribe lines. In particular, at least one of the probe pads is coupled by at least one of the well resistors to at least one of the chips.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: June 2, 2015
    Assignee: Broadcom Corporation
    Inventors: Frank Hui, Neal Kistler, Don Bautista