Patents Assigned to Broadcom
  • Patent number: 8131220
    Abstract: A management unit manages a plurality of multiservice communication devices capable of communicating via a plurality of networks. The management unit includes a communication device interface for facilitating a bidirectional data communication with the plurality of multiservice communication devices via a wireless control channel, the bidirectional data communication including outbound control data sent to at least one of the plurality of multiservice communication devices and inbound control data received from at least one of the plurality of multiservice communication devices. A network interface receives network resource data from the plurality of networks. A management processing unit processes the inbound control data and the network resource data and that generates the outbound control data in response thereto.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: March 6, 2012
    Assignee: Broadcom Corporation
    Inventors: Vinko Erceg, Brima B. Ibrahim, Jeyhan Karaoguz, John Walley, Arya Reza Behzad, David Rosmann
  • Patent number: 8129953
    Abstract: A method and apparatus is disclosed to regulate an input voltage to provide a regulated output power. The regulated output power may include a smooth direct current (DC) component and an undesired alternating current (AC) component, the smooth DC component being an average of the regulated output power. A buck regulator module of the present invention regulates the smooth DC component to approximate a reference voltage. The buck regulator module additionally replicates the undesired AC component embedded within the regulated output power. A replicated undesired AC component is combined with the regulated output power to reduce the undesired AC component embedded within the output power.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: March 6, 2012
    Assignee: Broadcom Corporation
    Inventor: Rosario Pagano
  • Patent number: 8130823
    Abstract: A video transmission system includes a transceiver module that transmits a video signal to a remote device over at least one RF communications channel wherein the video signal is transmitted as at least one separate video layer stream chosen from, an independent video layer stream and at least one dependent video layer streams that require the independent video layer for decoding. A control module determines at least one channel characteristic of the at least one RF channel and chooses the at least one separate video layer stream based on the at least one channel characteristic of the at least one RF channel.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: March 6, 2012
    Assignee: Broadcom Corporation
    Inventors: Stephen E. Gordon, Sherman (Xuemin) Chen, Michael Dove, David Rosmann, Thomas J. Quigley, Jeyhan Karaoguz
  • Patent number: 8131302
    Abstract: Dynamically splitting jobs in wireless system between agnostic processor may comprise evaluating a job that a wireless mobile communication device may be requested to perform. The wireless mobile communication (WMC) device may evaluate a requested job to determine if one or more tasks may be sent to a remote device. The WMC device may consider such factors as information pertaining to the WMC device itself, information relating to the connection between the devices, and/or information pertaining to the remote device. This information may comprise such data as power availability in the wireless mobile communication device, processing load in the WMC device, processing and/or storage capabilities of the remote device, and characteristics of the connectivity between the two devices.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: March 6, 2012
    Assignee: Broadcom Corporation
    Inventors: Thomas Quigley, Alexander G. MacInnis, Arya Behzad, Jeyhan Karaoguz, John Walley, Mark Buer
  • Patent number: 8130317
    Abstract: Methods and systems for performing interleaved to planar transformation operations in a mobile terminal having a video display are disclosed. Aspects of one method may include extracting similar color space components from a received block of interleaved YUV color space format video data as data is received, where the block may comprise 128 bits. The similar color space components may be extracted and transferred to a memory, where each type of the similar color space components may be stored contiguously in separate portions of the memory in planar format. The transferring of data may be via direct memory access of 32-bit words. When the line buffer that is receiving the interleaved video data is full, a direct memory access operation may be initiated. Direct memory access operation may also be initiated when the data for a similar color space component for a complete horizontal line is extracted.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: March 6, 2012
    Assignee: Broadcom Corporation
    Inventor: Weidong Li
  • Publication number: 20120051454
    Abstract: Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications. An appropriately designed phase rotation vector and/or appropriately designed cyclic shift delays (CSDs) are applied to respective sub-band components of the preamble. With appropriately designed CSDs, certain fields within the preamble are not modified. For example, a legacy short training field (L-STF) of the preamble is not changed when using appropriately designed CSDs. The respective CSDs may be implemented as integer multiples of a common CSD (e.g., 0×CSD, 1×CSD, 2×CSD, etc. such that one of the values of such a CSD vector may be zero [0], another may be the common CSD itself, etc.). Also, by employing an appropriately designed phase rotation vector and integer multiples of a CSD to a preamble, the respective peak to average power ratio (PAPR) between different respective fields within the preamble may be minimized.
    Type: Application
    Filed: August 25, 2011
    Publication date: March 1, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Jun Zheng, Min Chuin Hoo, Vinko Erceg
  • Publication number: 20120050082
    Abstract: An analog-to-digital converter (ADC) includes a plurality of single slope ADCs, a ramp generator, and digital output circuitry. Each single slope ADC includes an analog input operable to receive an analog input signal, a ramp input operable to receive an analog ramp signal, a comparator operable to compare the analog input signal to the analog ramp signal, and an output operable to produce a digital representation of the analog input signal based upon the comparison, wherein the plurality of single slope ADCs are operable to receive analog ramp signals that are out of phase with each other. The ramp generator that is operable to generate analog ramp signals for each of the plurality of single slope ADCs. The digital output circuitry is operable to receive outputs from each of the plurality of single slope ADCs and to produce a digital representation of the analog input signal based thereupon.
    Type: Application
    Filed: August 22, 2011
    Publication date: March 1, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Seyed AA Danesh, Jonathan Ephraim David Hurwitz
  • Publication number: 20120054578
    Abstract: Formulaic flexible collision-free memory accessing for parallel turbo decoding with quadratic polynomial permutation (QPP) interleave. A means is presented by which any desired number of parallel implemented turbo decoding processors can be employed to perform turbo decoding that has been performed using a QPP interleave. This approach is presented to allow an arbitrarily selected number (M) of decoding processors (e.g., a plurality of parallel implemented turbo decoders) to perform decoding of a turbo coded signal while still using a selected embodiment of a QPP interleave. In addition, a collision-free memory mapping, (MOD,C,W) provides more freedom for selecting the particular quadratic polynomial permutation (QPP) interleave (?) that satisfies a parallel turbo decoding implementation with any desired number of parallel implemented turbo decoding processors.
    Type: Application
    Filed: November 10, 2011
    Publication date: March 1, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Ba-Zhong Shen, Tak K. Lee
  • Publication number: 20120054563
    Abstract: A system and method for enabling portable diagnostics in a configurable device. Physical layer device technology can be implemented into a configurable device (e.g., handheld device) to perform diagnostics. The configurable device can be enabled for diagnostics through an authentication module that performs an authentication and/or licensing function. Diagnostic information (e.g., channel characteristics, data analysis, traffic analysis, packet analysis, bit analysis, etc.) can be displayed on a display of the configurable device to assist field personnel.
    Type: Application
    Filed: September 1, 2010
    Publication date: March 1, 2012
    Applicant: Broadcom Corporation
    Inventor: Wael William Diab
  • Publication number: 20120051355
    Abstract: A method includes determining whether information is to be transmitted via a radio frequency (RF) bus that supports direct intra-device communication between at least three circuits in a millimeter wave frequency band. When the information is to be transmitted via the RF bus, the method determines whether the RF bus is available. When the RF bus is available, the information is converted into RF bus signal, access to the RF bus is secured, and after access to the RF bus is secured, the RF bus signal is transmitted via the RF bus.
    Type: Application
    Filed: October 18, 2011
    Publication date: March 1, 2012
    Applicant: BROADCOM CORPORATION
    Inventor: Ahmadreza (Reza) Rofougaran
  • Publication number: 20120048599
    Abstract: Embodiments of the present invention are directed to providing a time delay to a shortened trace in a differential microstrip trace pair. By adding back metal to a ground plane associated with a DC blocking capacitor, a time delay can be added to the shortened trace. The cutout associated with the longer trace remains unaltered. In a further embodiment, both cutouts can be modified with the addition of metal, with the cutout associated with the shorter trace receiving more metal than the other cutout. In a further embodiment of the present invention, a cutout associated with a connector can be modified to add back metal in the cutout. The cutout associated with the shorter trace is modified while the other cutout is left unchanged.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 1, 2012
    Applicant: Broadcom Corporation
    Inventor: Shengli LIN
  • Publication number: 20120050989
    Abstract: Methods, systems, and apparatuses are described for cooling electronic devices. The electrical device includes an integrated circuit die (IC) having opposing first and second surfaces, a plurality of interconnects on the second surface of the IC die that enable the IC die to be coupled to a substrate, and a flexural plate wave device. The flexural plate wave device is configured to generate a stream of air to flow across the electrical device to cool the IC die during operation of the IC die.
    Type: Application
    Filed: June 30, 2011
    Publication date: March 1, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Milind S. Bhagavat, Seyed Mahdi Saeidi, Tak Sang Yeung
  • Publication number: 20120052824
    Abstract: According to one embodiment, a variable gain control transformer comprises a primary winding connected to differential inputs of the variable gain control transformer, a secondary winding for providing a single ended output to a load, and an output control circuit coupled to the secondary winding, the output control circuit configured to provide up to approximately 12 dB of gain control. Variable gain control may be achieved using first and second variable resistors of the output control circuit, wherein the first and second variable resistors are implemented by respective first and second pluralities of source-drain resistances produced by respective corresponding first and second pluralities of selectable field-effect transistors (FETs). In one embodiment, the variable gain control transformer further comprises a variable capacitance tuning circuit coupled between the differential inputs, the variable capacitance tuning circuit implemented using a plurality of selectable fixed capacitance unit cells.
    Type: Application
    Filed: August 30, 2010
    Publication date: March 1, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Ahmad Mirzaei, Hooman Darabi
  • Patent number: 8125959
    Abstract: A handheld computing unit includes a plurality of PHY units, a local wireless interface (LWI), and a processing module. When the unit is in a femtocell AP mode, the processing module performs one or more femtocell AP functions to facilitate conversion of a LWI downstream data into one or more downstream PHY signals and conversion of one or more upstream PHY signals into the LWI upstream data; determines energy demand of the handheld computing unit; determines whether the energy demand compares unfavorably to energy performance criteria; and, when the energy demand compares unfavorably to the energy performance criteria, executes an energy adjustment algorithm.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: February 28, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8126396
    Abstract: A wireless network infrastructure that adapts frame parameters of concurrent interfering and MIMO transmission and receptions in response to dynamically varying channel conditions. The channel conditions are determined by number of associated wireless end point devices within a cell, their capabilities, anticipated bandwidth usage, QOS (Quality Of Service) demands, priority of service and idle states, cell overlap interferences, near-far interferences and noises. The wireless network infrastructure consists of an access point that is adapted to transmit concurrent interfering transmissions, using a multiple input/multiple output scheme. The access point responds to the dynamically varying channel conditions by adapting the frame parameters of the concurrent interfering transmissions and parameters of multiple input/multiple output schemes.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: February 28, 2012
    Assignee: Broadcom Corporation
    Inventor: James D. Bennett
  • Patent number: 8126415
    Abstract: Aspects of a method and system for clock synchronization in a GNSS receiver are provided. In this regard, generation of a clock signal in a GNSS receiver may be disabled during a first time interval and enabled during a second time interval, wherein a counter utilized to generate the clock signal may be initialized to a known value during the first time interval via a reset signal synchronized to a reference signal. The reference signal may be generated by a temperature compensated crystal oscillator. Additionally, a counter may be incremented on each active edge of the reference signal that occurs during the first time interval and the value stored in the timer may be utilized to correct time in the GNSS receiver after the first time interval. In this regard, the value stored in the timer may be added to the time at which the first interval began.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: February 28, 2012
    Assignee: Broadcom Corporation
    Inventor: Alireza Zolfaghari
  • Patent number: 8127015
    Abstract: A method for supporting ASF in an ASD using one or more embedded processors. In one aspect of the invention the method comprises accepting ASF related packets, examining the ASF related packets using a firmware routine running on the one or more embedded processors, and generating a response. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: February 28, 2012
    Assignee: Broadcom Corporation
    Inventors: Steven B. Lindsay, Andrew M. Naylor
  • Patent number: 8125987
    Abstract: In one embodiment, there is presented a method for processing data. The method comprises receiving a plurality of packets, wherein each packet comprises a payload, and wherein the plurality of packets carry video data encoded in accordance with an encoding standard from a plurality of encoding standards; identifying encoding standards encoding the video data carried in the payloads of the plurality of packets; and inserting identifiers that identify the encoding standard encoding the video data carried in the payloads of the plurality of packets into the plurality of packets.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: February 28, 2012
    Assignee: Broadcom Corporation
    Inventors: Stephane W. Rodgers, Ut Nguyen, Rajesh S Mamidwar
  • Patent number: 8125950
    Abstract: An integrated circuit includes a millimeter wave transceiver and may include memory and processing resources, each with an associated millimeter wave transceiver. Intra-IC millimeter wave communication links, between resources on a given IC, enables IC-level resource sharing and Inter-IC millimeter wave communication links, between resources on different ICs, enables cross-IC-level resource sharing. A resource sharing method allocates IC resources to tasks based on task requirements, resource capabilities, and resource availability.
    Type: Grant
    Filed: May 30, 2009
    Date of Patent: February 28, 2012
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Timothy W. Markison
  • Patent number: 8126948
    Abstract: Aspects of a method and system for constant amplitude random sequence construction may include generating one or more real signal components via a random number generator, wherein each of the generated one or more real signal components may be subjected to an amplitude constraint. One or more corresponding imaginary signal components may be generated, each of which may be derived from a relationship between the generated one or more real signal components and the amplitude constraint. At least the generated one or more real signal components and the generated one or more corresponding imaginary signal components may be combined to generate a complex constant amplitude signal. The one or more real signal components may be generated according to a probability distribution in the random number generator.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: February 28, 2012
    Assignee: Broadcom Corporation
    Inventors: Francis Swarts, Mark Kent