Patents Assigned to Broadcom
  • Publication number: 20150312077
    Abstract: A wireless communication device (alternatively, device) a communication interface and a processor, among other possible circuitries, components, elements, etc. to support communications with other wireless communication device(s) and to generate and process signals for such communications. A device is configured to generate various orthogonal frequency division multiplexing (OHM) and/or orthogonal frequency division multiple access (OFDMA) packets (e.g., frames, signals, etc.) that are based on any of group of set of OFDM/A frame structures. Across the various OFDM/A frame structures, the ratio of pilot sub-carriers to data sub-carriers across resource units (RUs) decreases as the total number of sub-carriers across the RUs increases. In addition, some of the OFDM/A frame structures include different total number of sub-carriers yet same number of pilot sub-carriers. The device is configured to perform adaptation among and between the various OFDM/A frame structures based on any one or more considerations.
    Type: Application
    Filed: June 11, 2015
    Publication date: October 29, 2015
    Applicant: BROADCOM CORPORATION
    Inventor: Ron Porat
  • Publication number: 20150309796
    Abstract: A processor including a register file having a plurality of registers, and configured for out-of-order instruction execution, further includes a renamer unit that produces generation numbers that are associated with register file addresses to provide a renamed version of a register that is temporally offset from an existing version of that register rather than assigning a non-programmer-visible physical register as the renamed register.
    Type: Application
    Filed: October 31, 2014
    Publication date: October 29, 2015
    Applicant: Broadcom Corporation
    Inventors: Sophie WILSON, John Redford, Tariq Kurd
  • Publication number: 20150312802
    Abstract: A management controller in a network device may support performing management operations based on management traffic communicated wirelessly via a wireless network controller of the network devices. The management controller may perform the management operations and/or to support wireless communication of the management traffic independent of operations of the network device. The management controller may be integrated into a network controller in the network device. The management traffic may comprise out-of-band (OOB) management related traffic. A direct interface may be established between the management controller and the wireless network controller, to support direct sideband communication between the management controller and the wireless network controller. The sideband interface may incorporate Network Controller Sideband Interface (NC-SI) and/or Secure Digital Input Output (SDIO) interface.
    Type: Application
    Filed: June 11, 2015
    Publication date: October 29, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Hemal SHAH, Suryakant MAHARANA, Manoj KAMATH, Nisar SOTAKANAL
  • Publication number: 20150311913
    Abstract: Systems, apparatuses, and methods are provided for analog-to-digital converters (ADCs), such as successive-approximation-register (SAR) ADCs and pipelined ADCs that utilize distributed virtual-ground switching (DVS). DVS circuits and systems receive reference signal inputs that are provided to input signal buffers at the input side of the buffers via reference switches. The input signal buffers and corresponding switches are distributed into scaled replicas that each receive an analog input signal via input signal switches during a first operational phase and are connected to top plates of corresponding distributed capacitors. The bottom plates of the capacitors are sampled to provide analog input signal representations.
    Type: Application
    Filed: April 30, 2014
    Publication date: October 29, 2015
    Applicant: Broadcom Corporation
    Inventors: Hui Pan, Karim Abdelhalim
  • Publication number: 20150310909
    Abstract: A memory cell including a storage cell, a write port cell, and a read port cell is discussed. The storage cell is configured to store a logic value. The write port cell is configured to write the logic value. The read port cell is configured to read the stored logic value and includes a plurality of read ports. At least a first port of the plurality of read ports includes a first and a second active diffusion region that are each configured to be used for implementation of a second p-channel transistor. At least a second read port of the plurality of read ports includes a third and fourth active diffusion regions that are each configured to be used for implementation of a second n-channel transistor.
    Type: Application
    Filed: May 15, 2014
    Publication date: October 29, 2015
    Applicant: Broadcom Corporation
    Inventor: Scott Yu-Fan CHU
  • Patent number: 9170769
    Abstract: A system and method to reduce and/or eliminate crosstalk between various data paths of a data bus within integrated circuits (i.e., chips). The system and method can transmit both delayed and non-delayed data in respective transmission paths, store the delayed and non-delayed data upon receipt, and delay the reading of the delayed and non-delayed data from the storage unit to compensate for the delay implemented on the transmission of the delayed data.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: October 27, 2015
    Assignee: Broadcom Corporation
    Inventors: Sandeep Mirchandani, Chakrapal Kalwa, Chi-Jung Peng
  • Patent number: 9173178
    Abstract: A method and system are provided in which a mobile device may be operable for long term evolution (LTE) communication or some other wireless technology via two or more transmit antennas. The device may comprise a power amplifier for each transmit antenna with substantially similar maximum power being provided by both amplifiers. A power headroom value may be determined in the device based on path loss values between the transmit antennas and a base station and the maximum transmit power for each transmit antenna. Transmission via one of the transmit antennas may occur concurrently with transmission via another of the transmit antennas. The device may generate an indication of the determined power headroom value for communication to the base station. The power headroom value may be reported periodically or in response to a change in the power received at the base station.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: October 27, 2015
    Assignee: Broadcom Corporation
    Inventors: Soumen Chakraborty, Rishi Ranjan, Erik Stauffer, Kamlesh Rath, Manish Airy
  • Patent number: 9172710
    Abstract: Methods, systems and computer program products to implement extensions of the Media Transport Protocol (MTP) are provided herein. The methods include opening a session between an initiator and a responder, exchanging one or more of device and system information and sending one of an operation or event based on media player application features. The operation includes one or more of a dataset, response code, operation parameter and response parameter. In an embodiment, the extensions enable the initiator and responder to manage connections efficiently between devices, send media player application information to a media player device, exchange device and system information, manage digital rights, monitor system security and specify properties within one or more extensions of MTP. These extensions may be in the form of one or more of an operation, an event, a dataset or property code.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: October 27, 2015
    Assignee: Broadcom Corporation
    Inventor: Scott Krig
  • Patent number: 9172393
    Abstract: Methods, systems, and apparatuses for converting a digital input signal to an analog output signal are disclosed. A first delta-sigma modulator receives a common mode reference signal and generates a common mode control signal. A data delta-sigma modulator receives a digital input signal and generates a modulated digital input signal. A shuffler receives the modulated digital input signal and the common mode control signal and generates a shuffled digital input signal. A digital to analog converter (DAC) has a plurality of tri-level unit DAC elements each receiving a corresponding portion of the shuffled digital input signal as a first input signal, and receiving second and third input signals. The tri-level unit DAC elements have first outputs coupled together generating a first output signal and second outputs coupled together generating a second output signal. An operational amplifier receives the first and second output signals and generates the analog output signal.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: October 27, 2015
    Assignee: Broadcom Corporation
    Inventors: David Stoops, Min Gyu Kim, Vinod Jayakumar
  • Patent number: 9172954
    Abstract: A method for reducing memory bandwidth in a video decoder begins by performing a data reduction operation on a decoded first coded image to produce a second set of image data. The second set of image data stored and is selectively used for subsequent image decoding, thereby reducing the memory bandwidth. The data reduction operation can include image downsampling, wherein the pixel density is reduced by a factor of two in each of the vertical and horizontal directions.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: October 27, 2015
    Assignee: BROADCOM CORPORATION
    Inventor: Larry Pearlstein
  • Patent number: 9172966
    Abstract: A system and method for encoding video is provided. The system may partition a video frame into multiple coding units. The system may determine a memory bandwidth budget and selectively code each coding unit based on a memory cost as compared to the memory bandwidth budget.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: October 27, 2015
    Assignee: Broadcom Corporation
    Inventor: Lei Zhang
  • Patent number: 9171170
    Abstract: A computing system, comprising includes a first central processing unit (CPU) and a second CPU coupled with the first CPU and with a host processor. The second CPU and the host processor may both request the first CPU to generate keys that have access rights to regions of memory to access specific data. The first CPU may be configured to, in response to a request from the second CPU, generate a unique key with a unique access right to a region of memory, the unique key usable only by the second CPU, not the host processor.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: October 27, 2015
    Assignee: Broadcom Corporation
    Inventors: Andrew Dellow, Shashank Shekhar, Stephane Rodgers
  • Patent number: 9172973
    Abstract: Described herein is a method and system for motion estimation in a video encoder. There are two parts to the motion estimation. Coarse motion estimation generates a set of motion vectors for a current picture and at least one reference picture. Typically, coarse motion estimation operates on sub-sampled pictures. Fine motion estimation can refine coarse motion estimation results by searching interpolated video data in a region defined by the motion vectors from the coarse motion estimation.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: October 27, 2015
    Assignee: Broadcom Corporation
    Inventors: Bo Zhang, Stephen Gordon
  • Patent number: 9172438
    Abstract: To control UE assumption of interference there is a controller module to control a plurality of transmission points, each constituted by a set of at least one transmit antenna, to transmit data to another device in a coordinated transmission from at least a subset of the plurality of transmission points. The controller module is configured to allocate, to each resource linked to the subset of the plurality of transmission points, an interference contribution parameter that is indicative of an expected interference contribution originating from said transmission point, and to inform said another device of those resources to which the subset of the plurality of transmission points is linked, together with the respective interference contribution parameter allocated to each resource. Another device reports feedback based on signals which are scaled with the respective interference contribution parameter.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: October 27, 2015
    Assignee: BROADCOM CORPORATION
    Inventors: Tommi Koivisto, Helka-Liina Maattanen, Mihai Enescu, Marko Lampinen
  • Patent number: 9173163
    Abstract: Altering communication interface parameters based upon mobility. A novel approach is presented in which at least one operational parameter is changed as a function of the mobility of a wireless terminal. The changing of the operational parameter (which can be performed by either the wireless terminal, a WAP, or cooperatively by both) can include changing an entire protocol or only one operational parameter within the protocol. The mobility measure can be any one or combination of velocity (rate of change of position), acceleration, position within the network, or other measure. The mobility can be an average mobility over a period of time, or it can be an instantaneous mobility. The operational parameter can be changed by either communication device at each end of a communication link or in part, by both (e.g., either by a WAP (Wireless Access Point) or a communication device connected thereto, or by cooperation there between).
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: October 27, 2015
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, James D. Bennett
  • Patent number: 9172383
    Abstract: An integrated circuit package including an induction-coupled clock distribution system is disclosed. An exemplary embodiment of the disclosure includes a transmission module coupled to a main clock line, a clock reception module coupled to the transmission module, the clock reception module including a clock output line, and an electronic circuit coupled to the clock output line of the clock reception module, the electronic circuit including at least one clocked element and configured to operate synchronously with a clocking signal received through the clock output line of the clock reception module. The transmission module may be disposed on the supporting case of the IC package, and the electronic circuit and the clock reception module may be disposed on the semiconductor die of the IC package.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: October 27, 2015
    Assignee: Broadcom Corporation
    Inventors: David Chang, Ajat Hukkoo
  • Patent number: 9172407
    Abstract: A communication apparatus includes transmission circuitry and a frequency conversion unit. The transmission circuitry is configured to down-convert an input Intermediate Frequency (IF) signal using a transmit (TX) Local Oscillator (LO) signal so as to produce a TX baseband signal, to up-convert the TX baseband signal to produce an output Radio Frequency (RF) signal, and to send the output RF signal to an antenna. The frequency correction unit is configured to estimate a frequency of the TX baseband signal or of the input IF signal, and to adjust the TX LO signal based on the estimated frequency so as to cause the transmission circuitry to down-convert the input IF signal to a predefined target frequency.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: October 27, 2015
    Assignee: Broadcom Semiconductors Israel Ltd.
    Inventors: Igal Yehuda Kushnir, Jonathan Friedmann, Ronen Shaked, Tzahi Oren
  • Publication number: 20150304922
    Abstract: Systems and methods are disclosed for offloading traffic from a first network to a second network using offload preference indication (OPI) information. The OPI information can be sent to a mobile communication device using the Access Network Discovery and Selection Function (ANDSF) framework or Radio Access Network (RAN) rules. Systems and methods are disclosed for offloading traffic for users in user groups using a variety of techniques, including randomization techniques, assigned offload class techniques, and bitmap allocation techniques.
    Type: Application
    Filed: April 16, 2015
    Publication date: October 22, 2015
    Applicant: Broadcom Corporation
    Inventors: Florin BABOESCU, Guillaume Jacques SEBIRE, Dutt KALAPATAPU, Hannu HIETALAHTI
  • Publication number: 20150304037
    Abstract: Embodiments of the present invention exploit the existing capabilities of the Ethernet Passive Optical Network (EPON) MAC layer, designed for fiber optics communications, to provide a low cost MAC layer with upper layer connectivity over a hybrid fiber coaxial (HFC) network. In particular, embodiments allow for the EPON MAC to be used end-to-end (i.e., from an optical line terminal (OLT) to a coaxial network unit (CNU)) in a HFC network, thereby fully leveraging the packet processing capabilities, QoS functions, and management features of the EPON MAC. Furthermore, embodiments enable unified provisioning and management for both fiber and coaxial network units in a HFC network.
    Type: Application
    Filed: August 22, 2013
    Publication date: October 22, 2015
    Applicant: Broadcom Corporation
    Inventors: Edward Wayne Boyd, Sanjay Goswami
  • Publication number: 20150304046
    Abstract: Embodiments provide systems and methods for a probabilistic reporting mode, where an Optical Network Unit (ONU) sends a REPORT message only when it has data to transmit. The absence of a REPORT message from an ONU is treated by the Optical Line Terminal (OLT) as indicating absence of data to transmit at the ONU. In another aspect, embodiments include systems and methods for an unsolicited burst mode, where an ONU can be configured to transmit data in the upstream in an unsolicited manner. The unsolicited burst mode includes mechanisms to ensure that no data is lost due to potential collisions between ONUs.
    Type: Application
    Filed: May 29, 2014
    Publication date: October 22, 2015
    Applicant: Broadcom Corporation
    Inventors: Glen KRAMER, Lowell D. Lamb