Patents Assigned to Broadcom
  • Time domain coexistence of RF signals
    Patent number: 9100108
    Abstract: Various methods and systems are provided for time domain coexistence of RF signals. In one example, among others, a method includes obtaining access to a WLAN channel during a free period of a coexisting cellular connection, providing a RDG to allow another device to transmit for a duration corresponding to at least a portion of a TXOP, and receiving a transmission during the duration. In another example, a method includes obtaining access to a WLAN channel during a transmission period of a coexisting cellular connection and providing a protection frame to defer transmissions from another device for a duration corresponding to at least a portion of a TXOP. In another example, a method includes determining a shift of a BT transaction based at least in part upon a schedule of cellular communications and shifting at least a portion of the BT transaction based upon the determined shift.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: August 4, 2015
    Assignee: Broadcom Corporation
    Inventors: Sudhirkumar Prajapati, Payel Banerjee, Asish Makkattil Ratnan, Nethi Kashi Viswanath, Sachin Gupta, Sanjay Saha, Neeraj Poojary, Yury Gonikberg, Mark Gonikberg, Matthew Fischer, Kamesh Medapalli, Florin Baboescu, Steven Hall, Shawn Ding, Prasanna Desai, Knut Terje Hermod Odman
  • Femtocell fingerprinting
    Patent number: 9100891
    Abstract: User equipment (UE) includes an architecture for handling femtocell fingerprints. The architecture may, as examples, maintain the validity and reliability of fingerprints and coordinate enhancement to existing fingerprints. The architecture also supports fingerprint creation, updating, and deletion.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: August 4, 2015
    Assignee: Broadcom Corporation
    Inventors: Dong Zheng, Vikram Shantveer Mhetre, Sudip Alexei Gupta, Sagar Nargundkar, Yuan Liu, Sridhar Prakasam, Sultan Budhwani, Sandeep Sarthavalli Ramesh, Abhishek Pandit, Odile Rollinger, Mojan Mohajer, Soma Majumdar, Aniruddha Subhash Diwan
  • DIGITAL TO ANALOG CONVERTER WITH THERMOMETER CODING AND METHODS FOR USE THEREWITH
    Publication number: 20150214974
    Abstract: A digital to analog converter (DAC) includes a thermometer coder that processes a digital input based on a thermometer coding, and generates a plurality of micro-current source inputs and a plurality of micro-current source analog controls. A plurality of micro-current sources generate a corresponding plurality of micro-current source outputs in response to the plurality of micro-current source inputs, wherein first selected ones of the plurality of micro-current sources are powered-off in response to the plurality of micro-current source analog controls. A summing circuit generates an analog output based on a sum of the corresponding plurality of micro-current source outputs.
    Type: Application
    Filed: April 2, 2014
    Publication date: July 30, 2015
    Applicant: BROADCOM CORPORATION
    Inventor: Bruce Joseph Currivan
  • Call Connection Establishment Via Service Specific Access Control
    Publication number: 20150215216
    Abstract: A method and apparatus is disclosed to prioritize certain types of traffic, such as voice traffic or video traffic, to provide some examples, over other types of traffic, such as data traffic, to provide an example, within one or more of the cells during the period of high volume of traffic, for example, during the foreseeable and/or the unforeseeable events. The traffic within the communication network can be monitored and the prioritization of the traffic can be dynamically changed based upon the type and volume of traffic or the prioritization of the traffic can be preemptively changed based upon a foreseeable event.
    Type: Application
    Filed: October 27, 2014
    Publication date: July 30, 2015
    Applicant: Broadcom Corporation
    Inventors: Ozgur EKICI, Kavya Budugutta Ravikumar
  • TRAFFIC MANAGEMENT IN A MULTI-CHANNEL SYSTEM
    Publication number: 20150215217
    Abstract: A method, system and computer program product in a downstream line card of a Cable Modem Termination System (CMTS) for managing downstream traffic for channels and bonded channel groups is provided herein. The method comprises the step of receiving packets for transmission to cable modems and classifying each packet to a flow based on class of service associated with the packet. The method further includes the step of storing the packets in flow queues based, wherein a flow queue is selected based on a flow a packet is associated with and wherein each flow corresponds to a single flow queue.
    Type: Application
    Filed: December 29, 2014
    Publication date: July 30, 2015
    Applicant: Broadcom Corporation
    Inventors: Joel I. DANZIG, Michael R. Robinson, Russell J. Nagle, Karen M. Schramm
  • LOW-POWER LEVEL-SHIFT CIRCUIT FOR DATA-DEPENDENT SIGNALS
    Publication number: 20150214946
    Abstract: A low-power level-shift circuit for data-dependent signals includes a buffer circuit, a coupling capacitor, and a biasing circuit. The buffer circuit is biased by a low-voltage domain voltage supply and configured to receive a data-dependent signal. The coupling capacitor is coupled, at a first node, to an output node of the buffer circuit. The biasing circuit is coupled to a second node of the coupling capacitor and a switch. The level-shift circuit can translate a voltage level of the received data-dependent signal to a high-voltage domain that is suitable for proper operation of the switch.
    Type: Application
    Filed: February 20, 2014
    Publication date: July 30, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Franciscus VAN DER GOES, Christopher Michael WARD
  • DATA TRANSMISSION ACROSS INDEPENDENT STREAMS
    Publication number: 20150215650
    Abstract: Various systems and methods are provided for transmission of related data components across independent streams. In one embodiment, among others, a transmitting device may separate transmission data into related data components and transmit each related data component in an associated transport stream. Each related data component includes a synchronization tag associated with synchronization of the related data component within the transmission data. In another embodiment, a receiving device may receive related data components transmitted in separate transport streams and decode the related data components based at least in part upon a synchronization tag included in each related data component.
    Type: Application
    Filed: April 2, 2015
    Publication date: July 30, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Wade Wan, Rajesh Mamidwar, Xuemin Chen, Marcus Kellerman, Brett Tischler
  • FRAME ADAPTIVE DIGITAL TO ANALOG CONVERTER AND METHODS FOR USE THEREWITH
    Publication number: 20150214975
    Abstract: A digital to analog converter (DAC) includes a thermometer coder that generates a plurality of micro-current source analog controls on a frame-by-frame or symbol-by-symbol basis and to process digital inputs from symbols or frames of data based on a thermometer coding to generate a plurality of micro-current source inputs. A plurality of micro-current sources generate a corresponding plurality of micro-current source outputs in response to the plurality of micro-current source inputs, wherein first selected ones of the plurality of micro-current sources are powered-off in response to the plurality of micro-current source analog controls for a first symbol or frame of the plurality of symbols or frames of data. A summing circuit generates an analog output based a sum of the corresponding plurality of micro-current source outputs.
    Type: Application
    Filed: April 2, 2014
    Publication date: July 30, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Ramon Alejandro Gomez, Thomas Joseph Kolze, Bruce Joseph Currivan
  • Method and system for implementing a single weight (SW) single channel (SC) MIMO system
    Patent number: 9094062
    Abstract: Methods and systems for processing signals in a receiver are disclosed herein and may comprise generating at least one control signal that may be utilized to control a first received signal. A phase of the first received signals may be adjusted via the generated control signal so that the phase of the first received signal may be equivalent to a phase of a second received signal, where the phase of the first signal may be adjusted within a processing path used to process the first received signal. An amplitude of the first received signal may be adjusted via the generated control signal so that the amplitude of the first received signal may be equivalent to an amplitude of a second received signal, where the amplitude of the first signal is adjusted within the processing path used to process the first received signal.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: July 28, 2015
    Assignee: Broadcom Corporation
    Inventors: Mark Kent, Vinko Erceg, Uri Landau, Pieter Van Rooyen
  • Method and system for interference cancellation
    Patent number: 9094076
    Abstract: Aspects of a method and system for interference cancellation substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims. In this regard, a receiver may be operable to receive a differential signal via a differential channel, and to sense a common mode signal on the differential channel. A frequency range in which interference is present in the common mode signal may be determined. The differential signal and the common mode signal may be filtered to attenuate frequencies outside the determined frequency range. A phase and/or amplitude of the filtered common mode signal may be adjusted based on the filtered differential signal and the adjusted and filtered common mode signal may be subtracted from the received differential signal. The common mode signal may be sensed via a pair of resistors coupled to the differential channel.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: July 28, 2015
    Assignee: Broadcom Corporation
    Inventors: Mehdi Tavassoli Kilani, Scott Powell, Kadir Dinc, Kishore Kota, John Creigh, Hooman Parizi
  • Method, apparatus and computer program product for triggering the determination of a timing advance for one component carrier based upon another component carrier
    Patent number: 9094905
    Abstract: A method, apparatus and computer program product are provided to facilitate the determination of the timing advances of each of a plurality of component carriers by triggering the determination of the timing advances in response to certain pre-defined events that are indicative of a need for the timing advance to be determined. A method may include determining that a pre-defined event has occurred and triggering a determination of a timing advance for a second component carrier relative to a timing advance of a first component carrier based upon occurrence of the predefined event. In this regard, both the component carriers are concurrently allocated to a mobile terminal. The method may also utilize the timing advance to synchronize communications on the second component carrier between the mobile terminal and a network. A corresponding apparatus and computer program product may also be provided.
    Type: Grant
    Filed: April 2, 2011
    Date of Patent: July 28, 2015
    Assignee: BROADCOM CORPORATION
    Inventors: Wei Bai, David Randall, Erlin Zeng, Jing Han, Haiming Wang
  • High throughput interleaver/de-interleaver
    Patent number: 9093134
    Abstract: Systems and methods for performing high-speed multi-channel forward error correction using external DDR SDRAM is provided. According to one exemplary aspect, an interleaver/deinterleaver performs both read and write accesses to the DDR SDRAM that are burst-oriented by hiding active and precharge cycles in order to achieve high data rate operations. The interleaver/deinterleaver accesses data in the DDR SDRAM as read blocks and write blocks. Each block includes two data sequences. Each data sequence further includes a predetermined number of data words to be interleaved/deinterleaved. The PRECHARGE and ACTIVE command for one data sequence is issued when a preceding data sequence is being processed. Data in one read/write data sequence has the same row address within the same bank of the DDR SDRAM.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 28, 2015
    Assignee: Broadcom Corporation
    Inventors: Binfan Liu, Junyi Xu
  • Systems and methods for faster throughput for compressed video data decoding
    Patent number: 9094686
    Abstract: Presented herein are system(s) and method(s) for faster throughput for video decoding. In one embodiment, there is presented a pixel reconstructor for generating reconstructed pixels. The pixel reconstructor comprises a SIMD processor, a data access unit, and a circuit. The SIMD processor applies at least one prediction error to at least one block of prediction pixels. The data access unit provides the at least one prediction error and the at least one block of prediction pixels. A circuit determines whether two or more prediction errors and two or more prediction pixels can be concurrently processed by the SIMD processor.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: July 28, 2015
    Assignee: BROADCOM CORPORATION
    Inventor: Alexander MacInnis
  • Advanced processor translation lookaside buffer management in a multithreaded system
    Patent number: 9092360
    Abstract: An advanced processor comprises a plurality of multithreaded processor cores each having a data cache and instruction cache. A data switch interconnect is coupled to each of the processor cores and configured to pass information among the processor cores. A messaging network is coupled to each of the processor cores and a plurality of communication ports. In one aspect of an embodiment of the invention, the data switch interconnect is coupled to each of the processor cores by its respective data cache, and the messaging network is coupled to each of the processor cores by its respective message station. Advantages of the invention include the ability to provide high bandwidth communications between computer systems and memory in an efficient and cost-effective manner.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: July 28, 2015
    Assignee: Broadcom Corporation
    Inventors: David T. Hass, Basab Mukherjee
  • Modified measurement procedures for user equipments
    Patent number: 9094882
    Abstract: A network sends to a user equipment UE downlink signaling indicating at least one frequency which is subject to special handling. In response the UE measures and reports neighbor cells operating on any of that/those frequencies without regard to a threshold signal strength of a serving cell which is configured for reporting neighbor cells. In more specific examples, if the neighbor cells operating on any of that/those frequencies is considered a first set of neighbor cells, then the network also sends a second set of neighbor cells in other downlink signaling. Measuring and reporting on the first set of neighbor cells is less frequent than for the second set of neighbor cells, when measurements of the second set is required. Measuring and reporting on the second set is dependent on measured signal strength of a serving cell being greater than the configured threshold signal strength of the serving cell.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: July 28, 2015
    Assignee: BROADCOM CORPORATION
    Inventors: Christopher Peter Callender, Tao Chen
  • System and method for security key transmission with strong pairing to destination client
    Patent number: 9094699
    Abstract: Systems and methods for security key transmission with strong pairing to a destination client are disclosed. A security key may be generated by an on-chip key generator, an off-chip device, and/or software. A rule may then be paired with the security key and an address associated with the security key. The rule may define permissible usage by a destination module, which is defined by the associated address. The rule may comprise a command word, which may be implemented using a data structure associated with a permissible algorithm type, a security key size, and/or a security key source.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: July 28, 2015
    Assignee: Broadcom Corporation
    Inventors: Iue-Shuenn Chen, Kevin Patariu
  • Using motion information to assist in image processing
    Patent number: 9092861
    Abstract: Embodiments of the present application use motion information of an imaging device in encoding video or image frames captured by the imaging device. In one embodiment, a video encoding system that processes image data captured by an image sensor comprises at least one encoder that receives motion information describing motion of the imaging sensor during capturing of the image data and that encodes the image data with assistance of the motion information.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: July 28, 2015
    Assignee: Broadcom Corporation
    Inventors: James Bennett, Gordon (Chong Ming Gordon) Lee
  • Beamforming protocol for wireless communications
    Patent number: 9094071
    Abstract: Beamforming protocol for wireless communications. Various communications are made between an originating communication device and a remote communication device to effectuate steered communications there between. The beamforming approach presented herein is applicable and adaptable to communication devices having any combination of omni-directional and directional transmit and receive functionality (e.g., the transmit functionality and the receive functionality both being omni-directional; the transmit functionality being directional and the receive functionality being omni-directional; or the transmit functionality and the receive functionality both being are directional). The beamforming protocol presented herein allows for all combinations of communication device types and also provides collision rules as may be performed in accordance with the beamforming configuration.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: July 28, 2015
    Assignee: Broadcom Corporation
    Inventors: Saishankar Nandagopalan, Matthew James Fischer
  • Systems and methods for beamforming in a massive MIMO system
    Patent number: 9094064
    Abstract: Embodiments provide systems and methods for enabling a first transceiver to learn beamforming weights (e.g., Eigen beamforming weights) to a second transceiver, without any pilot signaling or explicit beamforming weight signaling from the second transceiver. In another embodiment, beamforming weight vectors to enable a multi-symbol spatial rate can be learned by the first transceiver.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: July 28, 2015
    Assignee: Broadcom Corporation
    Inventors: Sam Alex, Louay Jalloul, Amin Mobasher
  • Continuous adaptation of a channel equalizer
    Patent number: 9094247
    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 be sent in the transmission frames together with application-level data.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: July 28, 2015
    Assignee: Broadcom Corporation
    Inventors: Tooraj Esmailian, John Lock Creigh