Patents Assigned to Broadcom
  • Patent number: 8879467
    Abstract: A system for transferring data includes an interface configured to receive data that is sent via a first link, and a processor coupled to the interface. The processor is configured to: receive data that is sent via a first link; determine whether there is discontinuity in the received data, the determination being based at least in part on information included in the received data; in the event that the received data includes a discontinuity, generate replacement data that repairs the discontinuity; and transmit at least a portion of replacement data to a second link such that a synchronization requirement associated with the second link is fulfilled.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Brian Schladetzky, Lance Proctor, Rajeev Kumar Singh, Arti Chauhan, Praveen Coddambakkam, James K. Crutcher
  • Patent number: 8880056
    Abstract: A method for validating the operational characteristics of a mobile phone is provided. The message may include sending a message from the mobile phone to network testing equipment. This message may alert the network testing equipment that a debug state of the mobile phone is enabled. The method may also include sending test data from the network testing equipment to the mobile phone. The method may further include receiving the test data at the mobile phone. The method may yet further include creating a log of received data at the mobile phone. In addition, the method may include using short message service signaling to send at least a portion of the logged data from the mobile phone to the network test equipment.
    Type: Grant
    Filed: September 3, 2007
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventor: James King
  • Patent number: 8880015
    Abstract: Aspects of a method and system for LNA adjustment to compensate for dynamic impedance matching are provided. In this regard, an antenna matching network may be configured to maximize received signal strength for a determined frequency and an amplifier gain may be adjusted based on the maximized signal strength such that output levels of the amplifier are between specified limits. The antenna matching network may be programmatically controlled via one or more switching elements. The amplifier gain may be programmatically controlled via one or more bias points. The antenna matching network may be configured for a plurality of frequencies in a frequency band, such as an FM broadcast band, and a configuration for each frequency may be stored. Accordingly, when the receiver is tuned to a frequency, a corresponding configuration may be retrieved from memory.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8878707
    Abstract: A system includes a first storage element to store an input signal for a first sampling lane for a SHA-less stage. A first switch is connected with the first storage element, the first switch to control when the first storage element stores the input signal for sampling on the first sampling lane. A second switch is connected in series with the first switch, the second switch to control an instance for sampling the input signal stored on the first storage element for the first sampling lane.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Tao Wang, Chun-Ying Chen, Massimo Brandolini, Wei-Te Chou
  • Patent number: 8879432
    Abstract: Complementary band-splitter and band-combiner devices and methods of operation of both are disclosed. Embodiments of the invention may allow wideband and narrowband functions and services to operate seamlessly by band-splitting wideband data into low-band data and high-band data. Narrowband data may include only low-band data. Wideband services may operate on both low-band and high-band data, while narrowband services may operate only on low-band data. Another embodiment may include computer-readable storage having stored thereon a computer program having a plurality of code sections executable by a processor for causing the processor to perform the foregoing.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Wilf LeBlanc, Phil Houghton, Kenneth Cheung
  • Patent number: 8879629
    Abstract: A method and system are provided in to perform video encoding operations. An encoder module encodes a current block of pixels by selecting an intra-mode compression or an inter-mode compression based on a type of frame being compressed. The intra-mode compression includes a direction estimation operation based on values of previously reconstructed pixels.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventor: Peter de Rivaz
  • Patent number: 8879665
    Abstract: Methods and systems for controlling the supply voltage provided to a power amplifier (PA) in a radio frequency (RF) transmitter based on measured output spectrum emissions are provided. In an embodiment, the PA supply voltage is adjusted such that spectrum emission limits are satisfied with predetermined margins. In another embodiment, the predetermined margins are reduced to lower power consumption of the PA.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Ying Xia, Sriraman Dakshinamurthy, Robert Lorenz
  • Patent number: 8878711
    Abstract: An analog-to-digital converter includes an integrator to determine an integrated signal from a communication signal. A comparator quantizes the integrated signal to produce a quantized signal. An adjustable delay element provides a delayed quantized signal to the comparator.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventor: Sebastian Loeda Pagliano
  • Patent number: 8879523
    Abstract: Management frame directed cluster assignment within multiple user, multiple access, and/or MIMO wireless communications. From a first wireless communication device, a management frame may be transmitted to a number of other wireless communication devices to assign respective clusters (i.e., cluster being one or more channels within one or more bands) for use in communications by those other wireless communication devices. The first wireless communication device may be an access point (AP), and the others may be wireless stations (STAs); alternatively, all of the wireless communication devices in the communication system (e.g., including the first wireless communication device) may be STAs. The cluster assignment may be modified for any of a number of various reasons (e.g., periodically, after a certain number of packets being transmitted and/or received, communication system operating condition change, change in number, type, capabilities, etc.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Matthew James Fischer, Vinko Erceg, Joseph Paul Lauer, Peiman Amini, Joonsuk Kim
  • Patent number: 8879896
    Abstract: A method and apparatus are disclosed for facilitating efficient operation of trick modes in a personal video recording (PVR) system. Stream-navigation data from a data stream is captured and pre-processed to generate a frame-correlated NAV table comprising one entry for each frame within the data stream, during recording of the data stream. The stream-navigation data comprises start code data, content rating data, and conditional access data that is embedded in the data stream. During playback of the data stream in a user-selected trick mode, the frame-correlated NAV table is used to generate command packets that are sent to a data decoder along with selected frames of the data stream. The selected frames are decoded based on information in the command packets and certain selected frames may be displayed as part of the trick mode.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Frederick George Walls, David M. Erickson, Marcus Kellerman, Joshua Stults
  • Patent number: 8879905
    Abstract: One embodiment provides a system for performance monitoring in a passive optic network (PON). The system includes an optical line terminal (OLT) and an optical network unit (ONU). The OLT includes an optical transceiver configured to transmit optical signals to and receive optical signals from the ONU, and a performance monitoring mechanism configured to monitor performance of the PON based on received optical signals.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Weidong Rick Li, Jaroslaw Wojtowicz
  • Patent number: 8880020
    Abstract: A wireless device transmits a request message for receipt by a wireless network to at least one of request attachment of the wireless device to the wireless network and request location updating for the wireless device from the wireless network. The wireless device subsequently attempts an emergency call to the wireless network regardless of whether or not the wireless device receives a response to the request. In this way, the wireless device can make the emergency call promptly and without significant delay.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Matti Moisanen, Toni Tirkkonen
  • Patent number: 8878968
    Abstract: Embodiments of imaging devices of the present disclosure obtain color images from a monochromatic image sensor based on a series of several images taken at different focal positions of an optical imaging lens possessing a chromatic aberration.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventor: Ilya Blayvas
  • Patent number: 8879472
    Abstract: Long training field (LTF) for use within single user, multiple user, multiple access, and/or MIMO wireless communications. Classification of a signal may be performed using one or more LTF's therein. While such one or more LTF's may also be employed for performing functions such as channel estimation, channel characterization, etc., one or more particular characteristics of an LTF extracted from a received signal may also be employed to classify the signal as corresponding to one of a number of possible signal types. For example, such LTF-based classification may be used to classify the respective channel bandwidths associated with the signal (e.g., as being either 1 MHz or 2 MHz channel bandwidth). Generally, one or more LTF fields within one or more signals are employed for any of a number of additional uses beyond or in addition to such functions as channel estimation, channel characterization, etc.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventor: Ron Porat
  • Patent number: 8879834
    Abstract: A method and apparatus for reduced complexity video and image processing with special chroma handling are disclosed. Frame-type decisions are made on a video stream made up of a sequence of frames. A first subset of the frames are selected to be monochrome and generated without chroma data. A second subset of the frames are selected to be in color and generated with chroma components. In one embodiment, the first subset of frames includes odd frames and the second subset of frames includes even frames in the video stream. Under higher video frame rates, the lack of color in every other frame is not visible to the end viewer. Accordingly, subsequent processing of the output video stream permits luma-only processing of many frames in the video stream, extensively reducing the amount of computation.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Kathleen Burns, Larry Pearlstein
  • Patent number: 8879594
    Abstract: Systems and methods are provided to efficiently manage power in a laser a driver of an optical network unit (ONU) of a passive optical network (PON). Using information from an allocation map, the expected next allocated schedule for a transmission can be determined. The driver can be efficiently powered down and powered up based on the time remaining between the end of the current burst and the beginning of the next expected burst so that power is not wasted while the laser has no data to transmit.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Amiad Dvir, Eli Elmoalem, Assaf Koren
  • Patent number: 8879586
    Abstract: Embodiments are directed to timing synchronization between network nodes, such as, for example, based upon IEEE 1588. Example embodiments provide for a node in a IEEE 1588 message exchange to obtain the T3 timestamp without using its host interface to access the physical layer. Methods and systems include aspects of determining an egress timestamp corresponding to a time at which a first packet is transmitted from a physical interface of a first network entity on to a network media, storing the egress timestamp in a memory associated with the physical interface, receiving a second packet at the physical interface, retrieving the egress timestamp from the memory based upon the second packet, and updating the second packet with the retrieved egress timestamp. Embodiments may further include providing the updated second packet for protocol processing in the first network entity, or transmitting the updated second packet from the physical interface on to a network media.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: November 4, 2014
    Assignee: Broadcom Corporation
    Inventor: Jeffrey Tzeng
  • Publication number: 20140321576
    Abstract: A transmitter circuit with a passive mixer network includes a first outbound signal path configured to carry a first outbound signal. The transmitter circuit includes a second outbound signal path configured to carry a second outbound signal. The transmitter circuit includes N passive mixers coupled to the first and second outbound signal paths and configured to up-convert the first and second outbound signals from a first frequency to a second frequency based on a clock cycle, where N is a positive even integer. The first and second outbound signals are passed through the N passive mixers during each phase of 2*N phases in the clock cycle. The transmitter circuit also includes N radio frequency signal paths coupled to an output of respective ones of the N passive mixers and configured to receive the first and second outbound signals in the second frequency during each phase of the clock cycle.
    Type: Application
    Filed: May 17, 2013
    Publication date: October 30, 2014
    Applicant: Broadcom Corporation
    Inventors: Ahmad MIRZAEI, Mohyee Salahelden MIKHEMAR, Meng-An PAN, Rahul MAGOON
  • Publication number: 20140321864
    Abstract: Embodiments for improving the Signal to Noise and Distortion (SINAD) ratio in Pulse Amplitude Modulation (PAM)-M optical intensity modulation systems, to enable higher data rate communications, are provided. Embodiments can be used to improve the linearity and reduce the distortion of electrical and electro-optics components (including optical modulators) in optical intensity modulation systems. Embodiments are well suited for use with PAM-M optical intensity modulators, such as segmented Vertical Cavity Surface Emitting Laser (WSEL) and segmented Mach-Zehnder Modulator (MZM), for example.
    Type: Application
    Filed: September 30, 2013
    Publication date: October 30, 2014
    Applicant: Broadcom Corporation
    Inventors: William BLISS, John Wang
  • Publication number: 20140321463
    Abstract: A method in a cable modern (CM) to adjust its timing offset when waking up prior to the termination of its sleep cycle is provided. The method includes the step of receiving a service identifier (SID) for a multicast maintenance region, receiving a message from a cable modem termination system (CMTS) to enter a sleep cycle, waking up from the sleep cycle before the end of the sleep cycle in response to an event, and sending a message to the cable modem termination system (CMTS) to adjust the CM's timing offset during the multicast maintenance region.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 30, 2014
    Applicant: Broadcom Corporation
    Inventor: Lisa DENNEY