Patents Assigned to Broadcom
  • Patent number: 8831139
    Abstract: Certain aspects of a method and system for delay matching in a rake receiver are disclosed. Aspects of one method may include compensating for a delay associated with at least one or both of the following in a rake receiver: a control channel and a data channel, prior to individual processing of received data by the data channel and individual processing of received data by the control channel. The data channel or the dedicated physical channel (DPCH) may be delayed with respect to the control channel, which may comprise, for example, the common pilot control channel (CPICH), by a particular time period.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Hongwei Kong, Nelson Sollenberger, Li Fung Chang, Zoran Kostic, Mark Hahm
  • Patent number: 8831158
    Abstract: In one embodiment, a method comprising sampling by a first sampling unit a first signal received via a first antenna; and sampling by a second sampling unit a second signal received via a second antenna, the sampling of the second signal commencing in synchronization with the sampling of the first signal by the first sampling unit based on an accumulated value, the first and second signal sharing common information.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Ari Huostila, Chun-Hsuan Kuo
  • Patent number: 8830881
    Abstract: A circuit for a wideband electrical balance duplexer (EBD) may include a first impedance element and a second impedance coupled between a first and a second node and a second and a third node of the bridge circuit, respectively. An antenna may be coupled between the first and a fourth node of the bridge circuit to receive and transmit RF signals. A balancing network may provide an impedance substantially matching an impedance of the antenna. The balancing network may be coupled between the third and the fourth node of the bridge circuit. The first or the second impedance elements may facilitate balancing the bridge circuit. One or more output nodes of a transmit path may be coupled to an input node of the bridge circuit. One or more input nodes of a receive path may be coupled between the second and the fourth node of the bridge circuit.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Mohyee Mikhemar, Hooman Darabi
  • Patent number: 8831028
    Abstract: System and methods for transmitting packets over a network are provided. A system includes a network access coordinator (NAC) configured to communicate with first and second nodes via a network backbone. The NAC is configured to coordinate access of the first and second nodes to the network backbone. The NAC is configured to receive, from the first node in a first time period, a first reservation request to transmit a first packet to the second node. The NAC is configured to allocate, in response to the first reservation request, a first slot in a second time period for the first node to transmit the first packet to the second node. The NAC is configured to allocate a second slot for the second node to transmit, to the first node, a first reply that includes an indicator of whether the second node received the first packet.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Avi Kliger, Yitshak Ohana
  • Patent number: 8832776
    Abstract: A security processing system includes one or more micro-cores that can operate in conjunction with one or more security cores to process packets. The micro-core can perform any suitably programmed tasks upon packets, such as encryption/decryption and authentication tasks. The combination of having both the hard-coded security engines and the programmable micro-core within the same system permits the security system to effectively obtain the benefit of the speed and performance advantages of having dedicated security hardware, in addition to the flexibility and expandability of being able to use a programmable micro-core.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventor: Revathi Natarajan
  • Patent number: 8831534
    Abstract: A multimode wireless communication device includes a first radio section operably to convert outbound analog baseband signals into first outbound RF signals and to convert first inbound RF signals into inbound analog baseband signals when the wireless communication device is in a first mode of operation and a second radio section that performs similar functions in a second mode of operation. A diplexer section includes a first diplexer for coupling to a first antenna, and a second diplexer for coupling to a second antenna, and that selectively couples the first radio section to one of the first antenna and the second antenna, and that selectively couples the second radio section to one of the first antenna and the second antenna. First and second T/R switches are coupled to the first and second diplexers and to respectively, to the first and second radio sections.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Jason A. Trachewsky, Alan Corry, Venkat Kodavati
  • Patent number: 8830865
    Abstract: A system and method for modifying the size of data packets transmitted over a packet network in a manner that avoids overloading of the network. The system and method involves monitoring one or more parameters indicative of an amount of bandwidth being utilized on the packet network, responsive to the monitoring, determining that a level of bandwidth utilization on the packet network has changed, responsive to the determination that the level of bandwidth utilization on the packet network has changed, issuing a command to change the size of packets used for carrying data from a first packet size to a second packet size.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventor: Juin-Hwey Chen
  • Patent number: 8830951
    Abstract: Aspects of a method and system for servicing a plurality of users via a plurality of femtocells are provided. In this regard, a cellular enabled communication device may receive portions of a datastream from a plurality of femtocells, reconstruct the datastream from the received portions of the datastream, and process the reconstructed datastream for presentation to a user of the cellular enabled communication device. The received portions may be buffered in the cellular enabled communication device. The portions of the datastream may be associated with a plurality of CDMA channel access codes. The portions of the datastream may be received via a plurality of cellular frequencies. The portions of the datastream may be received during a plurality of TDMA timeslots. Portions of the datastream may be received from a cellular base station. Portions of the datastream may be received from a WiMAX base station.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, Charles Abraham, Xuemin Sherman Chen, Wael William Diab, Vinko Erceg, Victor T. Hou, Mark Kent
  • Patent number: 8831065
    Abstract: Methods and systems for fast synchronization and data reception for frequency hopping wireless communication systems are disclosed. Aspects of one method may include receiving a plurality of RF signals corresponding to a plurality of hopping frequencies. The RF signals may be processed in parallel to determine a hopping sequence. For example, the plurality of RF signals may be down-converted to a corresponding plurality of IF or baseband signals. The down-converted signals may be combined together to a single combined signal, and the single combined signal may then be processed to determine the frequency hopping sequence.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventor: Robert Hulvey
  • Patent number: 8829979
    Abstract: Disclosed is a power-efficient multi-mode charge pump. The charge pump comprises a first pumping circuit that provides at least one output voltage produced by a discharge sequence of a shared flyback capacitor. The charge pump also comprises a second pumping circuit that provides a plurality of output voltages produced by a corresponding plurality of discharge sequences of the shared flyback capacitor. The charge pump may include a transition circuit to selectably enable the first pumping circuit or the second pumping circuit. In one embodiment, the first pumping circuit may employ a two-phase discharge sequence. In another embodiment, the second pumping circuit may employ a three-phase plurality of discharge sequences. A related method is also disclosed.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Sherif Galal, Tay Hui Zheng, Todd L. Brooks
  • Patent number: 8830947
    Abstract: A solution for uplink transmission in a cellular communication system is disclosed. The same uplink time-frequency resource are scheduled to at least two terminal devices, and sensing periods of unequal lengths are allocated to the at least two terminal devices. The sensing period defines a duration a terminal device senses the uplink time-frequency resource for a conflicting transmission before transmitting in the uplink time-frequency resource.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Samuli Turtinen, Sami-Jukka Hakola, Timo Koskela
  • Patent number: 8830721
    Abstract: Embodiments provide improved memory bitcells, memory arrays, and memory architectures. In an embodiment, a memory cell comprises a transistor having drain, source, and gate terminals; and a plurality of program nodes, with each of the program nodes charged to a pre-determined voltage and coupled to a respective one of a plurality of bit lines.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Myron Buer, Dechang Sun, Duane Jacobson, David William Knebelsberger, Kevin LeClair
  • Patent number: 8832773
    Abstract: A system and method for processing information may include broadcasting information, which indicates program content for each of a plurality of channels communicated via a plurality of transport streams, to a plurality of processors. The plurality of processors identify which of the program content is associated with a particular one of the plurality of channels in each of the plurality of transport streams. The broadcasted information may be stored in a table in memory. The broadcasted information may include a packet identifier (PID) and/or a processor identifier associated with the PID that identifies at least one of the plurality of processors, such as parsers. The information may be stored in a table in memory prior to the broadcasting. The table may be indexed according to the plurality of channels.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Francis Chi-Wai Cheung, Rajesh Mamidwar, Iue-Shuenn I. Chen
  • Patent number: 8830880
    Abstract: Methods and systems for utilizing undersampling for crystal leakage cancellation are disclosed and may include undersampling a composite signal comprising a desired signal and leakage signals due to one or more clock signals. Measured DC signals generated by each of the undersampled signals may be reduced by adjusting the phase and/or amplitude of the clock signals. The undersampling may be performed at one or more of the one or more clock signals, or at integer sub-harmonics of the clock signals. The composite signal may include a signal received by a wireless system or a signal to be transmitted by the wireless system. The undersampled signals may be low-pass filtered. The desired signal may include in-phase and quadrature signals or a polar signal. The undersampling may be performed by one or more sample and hold circuits and the clock signals may be generated utilizing one or more crystal oscillators.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8831507
    Abstract: Whenever a mobile device in a building is within proximity of a RF communication device, the mobile device may be operable to receive location information transmitted, for example by broadcasting it, from a RF communication device. The transmitted location information comprises altitude information of the RF communication device. At least an altitude of the mobile device may be determined based on the received altitude information of the RF communication device. The RF communication device may be located in an elevator car and/or on a particular floor in the building. Whenever the RF communication device is located in the elevator car, the altitude information of the RF communication device may be received by the RF communication device from an elevator controller. In instances when the RF communication device also transmits its latitude/longitude (LAT/LON), the mobile device may be operable to determine a 3-dimentional (3D) location of the mobile device.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Dave Murray, Charles Abraham, Mark Buer, David Garrett, Jeyhan Karaoguz, David Lundgren
  • Patent number: 8831515
    Abstract: A method and apparatus is disclosed to compensate for overshoot and/or undershoot in a transmission sequence by shaping the transmission sequence according to a shaping envelope to lengthen its rise time and/or fall time to provide a modified transmission sequence. The shaping envelope may represent a trigonometric function, a polynomial function, a piecewise function or any other function that lengthens the rise time and/or the fall time of the transmission sequence. The modified transmission sequence adjusts an impedance of an antenna to load modulate a carrier wave that is inductively coupled to it.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventor: David S. Clarke
  • Patent number: 8829654
    Abstract: The present application discloses various implementations of a semiconductor package including an organic substrate and one or more interposers having through-semiconductor vias (TSVs). Such a semiconductor package may include a contiguous organic substrate having a lower substrate segment including first and second pluralities of lower interconnect pads, the second plurality of lower interconnect pads being disposed in an opening of the lower substrate segment. The contiguous organic substrate may also include an upper substrate segment having an upper width and including first and second pluralities of upper interconnect pads. In addition, the semiconductor package may include at least one interposer having TSVs for electrically connecting the first and second pluralities of lower interconnect pads to the first and second pluralities of upper interconnect pads. The interposer has an interposer width less than the upper width of the upper substrate segment.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Sam Ziqun Zhao, Rezaur Rahman Khan
  • Patent number: 8830814
    Abstract: A method, system and apparatus for communication in an Orthogonal Frequency Division Multiplexing (OFDM) communication system is provided. The method includes allocating a plurality of sequences to a plurality of sectors in the OFDMA communication system. The plurality of sequences are orthogonal to each other. The method further includes communicating one or more OFDM tiles between one or more MSs in one or more sectors of the plurality of sectors and one or more BSs of the one or more sectors. The one or more OFDM tiles include one or more sequences of the plurality of sequences allocated to the one or more sectors.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Rajesh Raja Manakkal, Leena Zacharias, Louay Jalloul
  • Patent number: 8832467
    Abstract: Methods, systems and computer program products to create and manage encapsulated Digital Rights Management (DRM) metafiles, also referred to as objects, are provided herein. Each object comprises a file header section, an encrypted webpage metadata section, an encrypted preferences section, an encrypted tracking section, an encrypted license section, a media file section and an encrypted file trailer section. Each section comprises multiple attributes. A metabase is provided herein to catalog objects, sections and attributes. Instructions are provided herein to allow for setting a current object, section or attribute; retrieving an object, section or attribute; and enumerating objects, sections and attributes in a device memory.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventor: Scott Krig
  • Patent number: 8832747
    Abstract: A system and method in a television system for responding to user-selection of an object in a television program based on geographical location, substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, Nambirajan Seshadri