Patents Assigned to Broadcom
  • Patent number: 8299503
    Abstract: A memory cell for reducing the cost and complexity of modifying a revision identifier (ID) or default register values associated with an integrated circuit (IC) chip, and a method for manufacturing the same. The cell, which may be termed a “Meta-Memory Cell” (MMCEL), is implemented on metal layers only and utilizes a dual parallel metal ladder structure that traverses and covers each metal and via layer from the bottom to the top of the metal layer structure of the chip. One of the metal ladders is connected to a power supply at the bottom metal layer, corresponding to a logic 1, and another metal ladder is connected to ground at the bottom metal layer, corresponding to a logic 0. The output of the MMCEL can thus be inverted at any metal or via layer and can be inverted as often as required. Significant cost savings are achieved because a revision ID or default register bits may be modified by altering only those metal layers where design changes are necessary.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Manolito M. Catalasan, Vafa J. Rakshani, Edmund H. Spittles, Tim Sippel, Richard Unda
  • Patent number: 8301918
    Abstract: A Power-over-Ethernet (PoE) communication system dynamically provides power and data communications over a communications link. In an enterprise environment made up of one or more personal computing devices (e.g., personal or laptop computers), a switch determines an allocated amount of power to be supplied to each device. The system includes a switch, a power supply, and one or more personal computing devices having a PoE control module. The PoE control module can be part of, for example, a Power Source Equipment/Powered Device (PSE/PD) system or a LAN-On-Motherboard/Powered Device (LOM/PD) system. A method of dynamically providing power to personal computing devices includes determining the power requirements of each device based on one or more factors, which can include, for example, battery charge status, power load, power mode, etc., of each device. Various algorithms can be used to decide priority in providing power to the devices.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Wael William Diab, Simon Assouad
  • Patent number: 8301101
    Abstract: Embodiments of a frequency translated filter (FTF) are presented. An FTF includes a passive mixer and a baseband impedance. The baseband impedance includes a network of one or more passive components (e.g., resistors, inductors, and capacitors) that form a low-Q filter. The passive mixer is configured to translate the baseband impedance to a higher frequency. The translated baseband impedance forms a high-Q filter and is presented at the input of the FTF. The FTF can be fully integrated in CMOS IC technology (or others, e.g., Bipolar, BiCMOS, and SiGe) and applied in wireless receiver systems including GSM, Wideband Code Division Multiple Access (WCDMA), Bluetooth, and wireless LANs (e.g., IEEE 802.11).
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Ahmad Mirzaei, Hooman Darabi, John Leete
  • Patent number: 8300544
    Abstract: A method and apparatus of a wireless subscriber requesting an Uplink (UL) grant size from a base station (BS) are disclosed. One method includes the subscriber analyzing traffic patterns of uplink data, the subscriber selecting a new grant size based on the analyzed traffic patterns, and the subscriber requesting the new grant size by signaling the new grant size to the BS.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventor: Brett Schein
  • Patent number: 8299979
    Abstract: A two-way visual communication system using multiple imaging devices, and a method for operating such a device is described. An embodiment of the present invention may use an image processor to analyze and modify image data from one or more imaging devices, and from the far-end party, in order to improve the perceived level of eye contact experienced by the users. The output signals from the imaging devices may be individually selected for transmission to the far end party, or may be used in combination in the synthesis of a composite image, using information derived from the imaging devices and/or from the image of the far-end party.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Darwin Rambo, Philip Houghton
  • Patent number: 8301440
    Abstract: A bit error concealment (BEC) system and method is described herein that detects and conceals the presence of click-like artifacts in an audio signal caused by bit errors introduced during transmission of the audio signal within an audio communications system. A particular embodiment of the present invention utilizes a low-complexity design that introduces no added delay and that is particularly well-suited for applications such as Bluetooth® wireless audio devices which have low cost and low power dissipation requirements.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Robert W. Zopf, Vivek Kumar, Juin-Hwey Chen
  • Patent number: 8301819
    Abstract: Methods and systems for docking a laptop with Ethernet A/V bridging to guarantee services are disclosed and may include interfacing a portable computing device with a docking station using an Ethernet interface, and utilizing audio/video (AV) bridging for communicating data between the portable computing device and one or more devices coupled to the docking station. AV bridging may be utilized based on latency requirements of the data communication. The interfacing may include directly coupling an Ethernet port of the docking station to an Ethernet port of the portable computing device. Alternatively, the interfacing may include coupling an Ethernet port of the docking station to an Ethernet port of the portable computing device via an Ethernet cable. The portable computing device may be powered via the Ethernet interface, and may utilize power over Ethernet protocol. The docking station may include a passive or active docking station.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Wael William Diab, Amit Oren, Yongbum Kim
  • Patent number: 8301991
    Abstract: LDPC (Low Density Parity Check) coded modulation symbol decoding. Symbol decoding is supported by appropriately modifying an LDPC tripartite graph to eliminate the bit nodes thereby generating an LDPC bipartite graph (such that symbol nodes are appropriately mapped directly to check nodes thereby obviating the bit nodes). The edges that communicatively couple the symbol nodes to the check nodes are labeled appropriately to support symbol decoding of the LDPC coded modulation signal. The iterative decoding processing may involve updating the check nodes as well as estimating the symbol sequence and updating the symbol nodes. In some embodiments, an alternative hybrid decoding approach may be performed such that a combination of bit level and symbol level decoding is performed. This LDPC symbol decoding out-performs bit decoding only. In addition, it provides comparable or better performance of bit decoding involving iterative updating of the associated metrics.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Ba-Zhong Shen, Hau Thien Tran, Kelly Brian Cameron
  • Patent number: 8300087
    Abstract: A sequential pattern comprising contiguous black frames inserted between left and right 3D video and/or graphics frames may be displayed on an LCD display. The pattern may comprise two or three contiguous left frames followed by contiguous black frames followed by two or three contiguous right frames followed by contiguous black frames. The left and/or right frames may comprise interpolated frames and/or may be displayed in ascending order. The contiguous black frames are displayed longer than liquid crystal response time. 3D shutter glasses are synchronized with the black frames. A left lens transmits light when left frames followed by contiguous black frames are displayed and a right lens transmits light when right frames followed by contiguous black frames are displayed. A 3D pair of 24 Hz frames or two 3D pairs of 60 Hz frames per pattern are displayed on a 240 Hz display.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Samir Hulyalkar, Xuemin Chen, Marcus Kellerman, Ilya Klebanov, Sunkwang Hong
  • Patent number: 8300493
    Abstract: Decoder circuits capable of decoding encoded ROM memory are provided. Embodiments provide several improvements over prior solutions which rely primarily on CMOS logic (e.g., inverters). For example, embodiments provide faster decoding by limiting the number of decoding stages to a single stage. Further, embodiments allow the use of partial swing (as opposed to full swing) on the bit lines, which results in significant power reduction. This, in turn, results in reduced amounts of capacitor discharges when reading the data.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Myron Buer, Brandon Bartz, Dechang Sun
  • Patent number: 8301092
    Abstract: Methods and systems for a low noise amplifier utilizing a leaky wave antenna are disclosed and may include one or more low-noise amplifiers (LNAs) coupled to one or more leaky wave antennas (LWAs) in a wireless device. RF signals may be received via one or more LNAs coupled to one or more feed points on a LWA. The one or more LNAs may be coupled to the feed points based on an impedance of the feed points and an input impedance of the one or more LNAs. The impedance of the feed points may be configured by locating them along a vertical axis in a resonant cavity of the LWA. The LWAs may be integrated on a chip, and/or on a package or printed circuit board to which the chip is affixed. The RF signals may be amplified by the LNAs and may be down-converted to baseband signals.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8300648
    Abstract: A system, method and computer program product is provided that allows an end user to monitor and/or control various data streams appearing on one or more customer premises equipment (CPE) interfaces of a residential gateway, even where the data streams are of different types such as voice, video or computer data. The invention provides a user interface, implemented as part of a CPE device or as a stand-alone device, that is accessed by an end user to transmit commands to a residential gateway. A processor within the residential gateway executes gateway monitoring and control software that receives the commands and, in response, performs the necessary routing and conversion of data streams to execute the desired monitoring and/or control functions.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventor: Charles E. Anderson, IV
  • Patent number: 8300881
    Abstract: A video transmitter identifies regions in pictures in a compressed three-dimensional (3D) video comprising a base view video and an enhancement view video. The identified regions are not referenced by other pictures in the compressed 3D video. The identified regions are watermarked. Pictures such as a high layer picture in the base view video and the enhancement view video are identified for watermarking. The identified regions in the base view and/or enhancement view videos are watermarked and multiplexed into a transport stream for transmission. An intended video receiver extracts the base view video, the enhancement view video and corresponding watermark data from the received transport stream. The corresponding extracted watermark data are synchronized with the extracted base view video and the extracted enhancement view video, respectively, for watermark insertion. The resulting base view and enhancement view videos are decoded into a left view video and a right view video, respectively.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Xuemin Chen, Samir Hulyalkar, Marcus Kellerman, Ilya Klebanov
  • Patent number: 8301913
    Abstract: A system and method for dynamic power provisioning for a wireless access point. Various types of power management information (e.g., number of users, connection speed, etc.) can be used in a process for determining a power request/priority for a wireless access point (WAP). The determined power request/priority can then be used in a dynamic allocation process by which the WAP's allocated power budget can seek to match its current power needs.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Wael William Diab, Martin McNarney
  • Patent number: 8299834
    Abstract: Various circuit techniques for implementing ultra high speed circuits use current-controlled CMOS (C3MOS) logic fabricated in conventional CMOS process technology. An entire family of logic elements including inverter/buffers, level shifters, NAND, NOR, XOR gates, latches, flip-flops and the like are implemented using C3MOS techniques. Optimum balance between power consumption and speed for each circuit application is achieve by combining high speed C3MOS logic with low power conventional CMOS logic. The combined C3MOS/CMOS logic allows greater integration of circuits such as high speed transceivers used in fiber optic communication systems.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventor: Armond Hairapetian
  • Patent number: 8300948
    Abstract: De-ringing operation for image processing. A selective image processing means is presented herein by which high frequency content is preserved while also eliminating ringing within digital images, and this is achieved without introducing aliasing. Based on the analysis of neighboring pixels, one or more of multiple filter modules and/or multiple image filtering/rocessing means is/are selectively applied to generate an output sample for a given pixel location. Two measures (e.g., local activity (LA) and edge strength (ES)) are calculated based on processing at least two different groups of pixels near a desired output sample. One of these groups of pixels may be a subset of another of the groups of pixels. By analyzing these two measures (e.g., LA and ES), selective processing of pixels near the desired output location ensures that high frequency content within the digital image is preserved with substantially reduced and/or eliminated ringing therein.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: October 30, 2012
    Assignee: Broadcom Corporation
    Inventors: Bo Zhang, Ashish Koul, Olivier Francois Joseph Harel
  • Publication number: 20120269125
    Abstract: Short training field (STF) for use within single user, multiple user, multiple access, and/or MIMO wireless communications. An STF design as is made such that the power associated with the tone indices at the edges of the STF design is relatively less than the power associated with the tone indices more centrally located within the STF design. Also, when multiple respective operational modes are supported (e.g., 1 MHz and 2 MHz), the respective STF designs corresponding to those respective operational modes have a great deal of similarity. For example, the respective STF designs for different respective operational modes may have certain common STF tone indices among those respective STF designs.
    Type: Application
    Filed: April 23, 2012
    Publication date: October 25, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Ron Porat, Jun Zheng
  • Publication number: 20120269142
    Abstract: Doppler adaptation using pilot patterns within single user, multiple user, multiple access, and/or MIMO wireless communications. Within a communication system employing orthogonal frequency division multiplexing (OFDM) signaling, pilots may be adaptively and/or selectively located at different respective sub-carrier or tone locations within different respective symbols based on one or more patterns. In some implementations, decimation may also be performed such that not necessarily all respective tone or sub-carrier locations are covered within one particular group. Multiple respective groups may be employed to cover all possible tone or sub-carrier locations with at least one pilot over a particular number of symbols. In a receiver communication device operating using such decimation, interpolation over the decimated set of tones or sub-carriers may be made to effectuate channel estimate updates.
    Type: Application
    Filed: April 23, 2012
    Publication date: October 25, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Ron Porat, Vinko Erceg
  • Publication number: 20120269107
    Abstract: A Wireless Local Area Network (WLAN) system based upon peer-to-peer communications. A wireless terminal for peer-to-peer communications acts either as a WLAN master or as a WLAN slave. When the wireless terminal acts a master, the wireless terminal undertakes mastering duties that include transmitting a beacon interval in the frame cycle. When the wireless terminal is not tethered to a power source, mastering duties alternate according to a round-robin WLAN mastering cycle, wherein the wireless terminal acts the WLAN master during at least one frame cycle and acts the WLAN slave during other frame cycles to conserve an untethered power source of the wireless terminal.
    Type: Application
    Filed: June 27, 2012
    Publication date: October 25, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Stephen Palm, Edward H. Frank, Bruce E. Edwards, Jason A. Trachewsky
  • Publication number: 20120272300
    Abstract: A system and method is provided for communication of information in a mobile communication device (WMCD) configured to network connection may include discovering via a wireless mobile communication device, available communication resources based on acquired biometric data for a user of the WMCD, and communicating multimedia information between the WMCD and one or more of the discovered available resources. The acquired biometric data may include physical and behavioral biometric data to be authenticated and validated by a pattern recognition database. A connection between the WMCD and one or more discovered available resources may be established through linking the acquired biometric data to resources in available local or remote network. The established connection may enable the WMCD to consume or redirect media from the available resources and may be dynamically adjusted and updated based on dynamic sensing of the acquired biometric data in the available network or available resources.
    Type: Application
    Filed: July 2, 2012
    Publication date: October 25, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Thomas Quigley, Alexander MacInnis, Arya Behzad, Jeyhan Karaoguz, John Walley, Mark Buer