Patents Assigned to Broadcom
  • Publication number: 20140201588
    Abstract: A communication device is configured to encode and/or decode low density parity check (LDPC) coded signals. Such LDPC coded signals are characterized by LDPC matrices having a particular form. An LDPC matrix may be partitioned into a left hand side matrix and the right hand side matrix. The right hand side matrix can be lower triangular such that all of the sub-matrices therein are all-zero-valued sub-matrices (e.g., all of the elements within an all-zero-valued sub-matrix have the value of “0”) except for those sub-matrices located on a main diagonal of the right hand side matrix and another diagonal that is adjacently located to the left of the main diagonal. A device may be configured to employ different LDPC codes having different LDPC matrices for different LDPC coded signals. The different LDPC matrices may be based generally on a common form (e.g., with a right hand side matrix as described above).
    Type: Application
    Filed: October 31, 2013
    Publication date: July 17, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Ba-Zhong Shen, Tak K. Lee, Jonathan S. Min, Avi Kliger, Richard S. Prodan
  • Publication number: 20140199996
    Abstract: In a Long Term Evolution (LTE) environment, the LTE network can coordinate with a subscribing user equipment to manage offloading to a wireless local area network (WLAN) access point or other base station. In doing so, the serving base station on the LTE network can acquire device capabilities of the user equipment and provide configuration details to the user equipment based on those capabilities. These configuration details may cause the user equipment to monitor one or more triggers, and may configure a scan to be later performed by the user equipment. Based on the monitored trigger, the user equipment can then scan the environment according to the scan configuration defined by the base station, and relay scan results to the base station to make a handover determination.
    Type: Application
    Filed: January 16, 2014
    Publication date: July 17, 2014
    Applicant: Broadcom Corporation
    Inventors: Shao-Cheng WANG, Pavan NUGGEHALLI
  • Publication number: 20140198705
    Abstract: Communications are supported between wireless communication devices using OFDMA signaling and duplicate processing. An OFDMA frame, which includes first data intended for a first recipient device and second data intended for a second recipient device, is transmitted via a first sub-channel, and a duplicate of the OFDMA frame is transmitted via a second sub-channel. In some instances, additional duplicates of the OFDMA frame are transmitted via additional sub-channels. The OFDMA frame may be generated based on a first frequency and then down-clocked to a second frequency that corresponds to a bandwidth of one of the sub-channels. A wireless communication device configured to perform such operations may be compliant with one or more IEEE 802.11 communication standards, protocols, and/or recommended practices and may also be backward compatible with prior versions of IEEE 802.11. Different numbers of sub-channels and sub-channels of different bandwidths may be used to different times.
    Type: Application
    Filed: September 30, 2013
    Publication date: July 17, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Ron Porat, Nihar Jindal
  • Publication number: 20140201354
    Abstract: Disclosed are various embodiments that relate to a network switch. The switch determines whether a network packet is associated with a packet processing context, the packet processing context specifying a condition of handling network packets processed in the switch. The switch determines debug metadata for the network packet in response to the network packet being associated with the packet processing context; and the debug metadata is stored in a capture buffer.
    Type: Application
    Filed: January 17, 2013
    Publication date: July 17, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Brad Matthews, Puneet Agarwal, Bruce Kwan
  • Publication number: 20140199999
    Abstract: Methods, apparatuses and a computer program product for small cell and user equipment discovery. The present invention includes obtaining information regarding small cell discovery on macro layer, obtaining information regarding user equipment discovery, determining whether the information regarding user equipment discovery depends on the information regarding small cell discovery, if it is determined that the information regarding user equipment discovery depends on the information regarding small cell discovery, building parameters for user equipment discovery based on parameters for small cell discovery included in the information regarding small cell discovery, and starting small cell discovery and user equipment discovery based on the parameters.
    Type: Application
    Filed: January 13, 2014
    Publication date: July 17, 2014
    Applicant: Broadcom Corporation
    Inventors: Sami-Jukka HAKOLA, Samuli TURTINEN, Timo Kalevi KOSKELA
  • Publication number: 20140201604
    Abstract: A communication system and a method are disclosed. The communication system includes an encoder configured to encode source data and output an encoded frame including a plurality of rows and a plurality of columns. The plurality of rows include a row component code. The plurality of columns include a column component code. The row component code is configured to achieve a lower bit error rate than the column component code in communication channels having a same signal to noise ratio.
    Type: Application
    Filed: April 5, 2013
    Publication date: July 17, 2014
    Applicant: Broadcom Corporation
    Inventor: Zhongfeng WANG
  • Publication number: 20140201592
    Abstract: A communication device is configured to encode and/or decode low density parity check (LDPC) coded signals. Such LDPC coded signals are characterized by LDPC matrices having a particular form. An LDPC matrix may be partitioned into a left hand side matrix and the right hand side matrix. The right hand side matrix can be lower triangular such that all of the sub-matrices therein are all-zero-valued sub-matrices (e.g., all of the elements within an all-zero-valued sub-matrix have the value of “0”) except for those sub-matrices located on a main diagonal of the right hand side matrix and another diagonal that is adjacently located to the left of the main diagonal. A device may be configured to employ different LDPC codes having different LDPC matrices for different LDPC coded signals. The different LDPC matrices may be based generally on a common form (e.g., with a right hand side matrix as described above).
    Type: Application
    Filed: October 31, 2013
    Publication date: July 17, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Ba-Zhong Shen, Avi Kliger, Tak K. Lee
  • Publication number: 20140197497
    Abstract: A native p-type metal oxide semiconductor (PMOS) device that exhibits a low threshold voltage and a high drive current over a varying range of short channel lengths and a method for fabricating the same is discussed in the present disclosure. The source and drain regions of the native PMOS device, each include a strained region, a heavily doped raised region, and a lightly doped region. The gate region includes a stacked layer of a gate oxide having a high-k dielectric material, a metal, and a contact metal. The high drive current of the native PMOS device is primarily influenced by the increased carrier mobility due to the strained regions, the lower drain resistance due to the raised regions, and the higher gate capacitance due to the high-k gate oxide of the native PMOS device.
    Type: Application
    Filed: January 14, 2013
    Publication date: July 17, 2014
    Applicant: Broadcom Corporation
    Inventor: Akira ITO
  • Publication number: 20140197453
    Abstract: Embodiments of an exemplary image sensor structure of the present disclosure contains at least two different layers of band gap semiconductors, where each upper layer of the different layers has a different band gap than a lower layer. For such an image sensor structure, the upper layer has a greater band gap than any layer positioned below the upper layer including the lower layer.
    Type: Application
    Filed: January 30, 2013
    Publication date: July 17, 2014
    Applicant: Broadcom Corporation
    Inventor: Ilya Blayvas
  • Publication number: 20140197900
    Abstract: Systems and methods for switching impedance are provided. In some aspects, a system includes first and second impedance elements and an impedance switch module, which includes a third impedance element coupled between the first and second impedance elements and a switch parallel to the third impedance element. The switch is coupled between the first and second impedance elements, and is configured to switch between an open configuration and a closed configuration. An electrical path is completed between the first impedance element and the second impedance element via the first switch in the closed configuration. The electrical path is not completed in the open configuration. A total impedance of the first impedance element, the second impedance element, and the impedance switch module is varied based on the switching between the open configuration and the closed configuration.
    Type: Application
    Filed: March 14, 2013
    Publication date: July 17, 2014
    Applicant: Broadcom Corporation
    Inventors: Shriram KALUSALINGAM, Massimo BRANDOLINI
  • Publication number: 20140198754
    Abstract: A mobile telecommunications architecture is disclosed. A downlink mobile telecommunications signaling message is received via a first communication interface associated with a single shared network controller connection to a mobile switching center (MSC) server. The downlink mobile telecommunications signaling message is mapped to one of a plurality of small scale base stations each of which is configured to perform at least some network controller functions.
    Type: Application
    Filed: January 23, 2014
    Publication date: July 17, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Yan Zhang, Ahmed Tariq
  • Publication number: 20140198692
    Abstract: Techniques for securing transmit opening help enhance the operation of a station that employs the technique. The techniques may facilitate low latency response to a protocol data requester, for instance. The techniques provide ways for the protocol data requester to provide additional time for the protocol data responder to obtain the needed response data for the protocol data requester. One way in which this can be done is by intelligently lengthing the protocol request transmitted by the protocol requester.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 17, 2014
    Applicant: Broadcom Corporation
    Inventors: Payam Torab Jahromi, Gang Lu
  • Patent number: 8781497
    Abstract: Passive location determining of a 3G handset is provided. The method may include the following steps: sending a sequence of 3G ‘Pings’ directed at a specified handset over a 3G network; determining the specified handset user identifier and the sewing base station of the specified handset based on reoccurrences of user identifiers responsive of the ping requests, captured from the forward access channel (FACH) of each base station; decoding the FACH of the serving base station responsive to an additional ping, yielding parameters required for receiving uplink dedicated channel (UL DCH); estimating, in each location associated with a base station, a time difference between fastest possible and actual arrival of a signal over the UL DCH sent by the specified handset, wherein the estimating is synchronized to the serving base station; and calculating the location of the specified handset, based on the estimated time differences associated with the locations.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: July 15, 2014
    Assignee: Broadcom Corporation
    Inventors: Ilya Degtyar, Alon Shechter, Rafael Carmon
  • Patent number: 8779598
    Abstract: Embodiments described herein provide a method of manufacturing integrated circuit (IC) devices. The method includes coupling a first surface of a first intermediate substrate to a first surface of a second intermediate substrate, forming a first plurality of patterned metal layers on a second surface of the first intermediate substrate to form a first substrate and a second plurality of patterned metal layers on a second surface of the second intermediate substrate to form a second substrate, and separating the first and second substrates. Each of the first substrate and the second substrate is configured to facilitate electrical interconnection between a respective IC die and a respective printed circuit board (PCB).
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: July 15, 2014
    Assignee: Broadcom Corporation
    Inventors: Fan Yeung, Raymond (Kwok Cheung) Tsang, Edward Law
  • Patent number: 8781450
    Abstract: A system and method is provided for handling data in wireless communication devices where data may be captured and linked to a personal journal via indexing and mapping of context data tags abstracted from captured data. The captured data may be retrieved by matching a query to one or more context data tags indexed and mapped to the personal journal. A user preference utilizing one or more of the context data tags linked to the personal journal may facilitate captured data retrieval. The captured data may include multimedia data of an event pre-tagged with indexed information such as user ID, time, date, location and environmental condition or optionally one or more user's biometric data in response to the event. The pre-tagged captured data may be stored in the local host device or transferred to a remote host or storage for later retrieval or post processing.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: July 15, 2014
    Assignee: Broadcom Corporation
    Inventors: Arya Behzad, Mark Buer, Jeyhan Karaoguz, Alexander MacInnis, Thomas Quigley, John Walley
  • Patent number: 8781080
    Abstract: Systems and methods for presenting audio messages are provided. In some aspects, a method includes receiving an audio message from a first user and generating a text-based representation of the audio message. The method also includes generating one or more identification tags based on the text-based representation of the audio message. At least one of the one or more identification tags includes a subject of the audio message. The method also includes presenting at least one of the text-based representation of the audio message or the one or more identification tags to a second user using a graphical user interface.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: July 15, 2014
    Assignee: Broadcom Corporation
    Inventors: Kelly Hale, Jes Thyssen
  • Patent number: 8782314
    Abstract: Embodiments include a system and method for an interrupt controller that propagates interrupts to a subsystem in a system-on-a-chip (SOC). Interrupts are provided to an interrupt controller that controls access of interrupts to a particular subsystem in the SOC that includes multiple subsystems. Each subsystem in the SOC generates multiple interrupts to other subsystems in the SOC. The interrupt controller processes multiple interrupts and generates an interrupt output. The interrupt output is then transmitted to a particular subsystem.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: July 15, 2014
    Assignee: Broadcom Corporation
    Inventors: Love Kothari, Mark Fullerton
  • Patent number: 8782442
    Abstract: An apparatus and method for multi-point detection in a power source equipment (PSE) device is provided. During multi-point detection, a series of at least four currents is sequentially applied to a link port of the PSE device. Each current is applied during a different measurement interval. A voltage measurement sample is obtained for each of the measurement intervals. A difference in voltage between alternating voltage samples is determined and used by a detection module to determine whether a valid power device is coupled to the link port of the PSE.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: July 15, 2014
    Assignee: Broadcom Corporation
    Inventors: Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
  • Patent number: 8780003
    Abstract: A multiple frequency projected artificial magnetic mirror (PAMM) includes a plurality of metal traces, a metal backing, and a dielectric material. The plurality of metal traces is on one or more layers of a substrate and the metal backing is on another layer of the substrate. The dielectric material is between the metal backing and the plurality of metal traces, which is electrically coupled to the metal backing. At least some of the plurality of metal traces is of various sizes and of various positioning and spacing to create a distributed inductor-capacitor network having a first frequency band of operation and a second frequency band of operation.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: July 15, 2014
    Assignee: Broadcom Corporation
    Inventors: Nicolaos G. Alexopoulos, Chryssoula A. Kyriazidou
  • Patent number: 8780961
    Abstract: Systems and methods to operate wireless devices are provided herein. In an exemplary system a first wireless device coupled to a consumer electronics device is operated in a sleep mode. It is determined whether there is a second device is operating in the same bandwidth spectrum as the first device. If there is a second device operating in the same bandwidth spectrum, then the first device is switched to a sniff mode of operation.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: July 15, 2014
    Assignee: Broadcom Corporation
    Inventors: James Michael Muth, Stephen McIntyre