Patents Assigned to Broadcom
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Publication number: 20140071583Abstract: A liquid micro-electro-mechanical system (MEMS) component includes a board, a channel frame, a flexible channel side, a liquid droplet, and one or more conductive elements. The channel frame is within the board and mates with the flexible channel side to form a channel within the board. The liquid droplet is contained within the channel. When a pressure is applied to the flexible side, the shape of the liquid droplet is changed with respect to the one or more conductive elements thereby changing an operational characteristic of the liquid MEMS component.Type: ApplicationFiled: December 17, 2012Publication date: March 13, 2014Applicant: Broadcom CorporationInventor: Ahmadreza Rofougaran
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Publication number: 20140073325Abstract: A system and method for performing anticipatory hand-off setup between communication networks. Various aspects of the present invention may, for example and without limitation, provide a system and method for performing anticipatory hand-off setup between communication networks. For example and without limitation, prior to a determination to perform a hand-off of a mobile communication device from a first communication network to a second communication network, a determination may be made that hand-off setup information should be communicated with the second communication network. For example, such a determination may be made in anticipation of a hand-off that may or may not happen. Such hand-off setup information may then be communicated with the second communication network. Such communicated setup information may then, for example, be utilized to at least partially prepare for performing the anticipated hand-off.Type: ApplicationFiled: November 18, 2013Publication date: March 13, 2014Applicant: Broadcom CorporationInventor: Jeyhan Karaoguz
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Publication number: 20140073264Abstract: Aspects of a method and system for sharing antennas for high frequency and low frequency applications may include configuring a multi-frequency antenna system by coupling a plurality of antennas together communicatively via one or more frequency-dependent coupling elements. Radio signals may be received and/or transmitted on one or more radio frequencies via said configured multi-frequency antenna system. The one or more frequency-dependent coupling elements may be frequency-tunable, and may comprise microstrips, transmission lines, and/or RLC circuits. The multi-frequency antenna system may be configured for concurrent operation or time-division duplex operation during the transmitting and/or the receiving. The one or more radio frequencies may operate concurrently or in time-division duplex. The radio signals for transmission may be generated in one or more radio frequency front-ends, and the received radio signals may be demodulated in one or more radio frequency front-ends.Type: ApplicationFiled: September 23, 2013Publication date: March 13, 2014Applicant: Broadcom CorporationInventor: Ahmadreza Rofougaran
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Publication number: 20140070898Abstract: A voltage controlled oscillator (VCO) with low phase noise and a sharp output spectrum is desirable. The present disclosure provides embodiments of LC tank VCOs that generate output signals with less phase noise compared with conventional LC tank VCOs, while at the same time limiting additional cost, size, and/or power. The embodiments of the present disclosure can be used, for example, in wired or wireless communication systems that require low-phase noise oscillator signals for performing up-conversion and/or down-conversion.Type: ApplicationFiled: September 11, 2012Publication date: March 13, 2014Applicant: Broadcom CorporationInventors: Farid SHIRINFAR, Tirdad SOWLATI, Maryam ROFOUGARAN, Ahmadreza ROFOUGARAN
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Publication number: 20140072083Abstract: Disclosed are various embodiments for circuitry that generates a sync code for wireless transmission. The system generates a sync word according to an identifier of the transmitter, the sync word being unique under a cyclic shift of the sync word. The system inserts a plurality of instances of the sync word into a data stream. The system also transmits, via the transmitter, the data stream to a receiver, the receiver being operable to perform a sliding correlation operation on the sync word.Type: ApplicationFiled: September 10, 2013Publication date: March 13, 2014Applicant: Broadcom CorporationInventors: Robert William Hulvey, Hyungjin Kim, Steven Deane Hall, Nicholas Michael Carbone, Siukai Mak
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Publication number: 20140075444Abstract: A system includes a task scheduler to select a queue from a port. The port includes a determined number of cell slots between pick opportunities. The task scheduler selects a queue at a pick opportunity. A queue manager connects with the task scheduler to pop cell packets from the selected queue, and to send update information to the task scheduler. The update information includes information of how the queue manager expects to fill the cell slots between the task scheduler selections. The task scheduler makes subsequent queue selections based on the update information.Type: ApplicationFiled: September 12, 2012Publication date: March 13, 2014Applicant: Broadcom CorporationInventors: Michael Lau, Rahul Durve
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Publication number: 20140073280Abstract: A system for cancellation of a reciprocal-mixing noise may comprise a down-converter mixer that may be configured to down convert a radio-frequency (RF) signal and to generate a baseband signal. The RF signal may include a desired signal and a blocker signal. A first signal path may be configured to receive the baseband signal and to generate a first signal. A second signal path may be configured to receive the baseband signal and to generate a second signal. A subtraction module may be configured to subtract the second signal from the first signal and to generate an output signal. The second signal may comprise the reciprocal-mixing noise, and the output signal may comprise the desired signal substantially free from the reciprocal-mixing noise.Type: ApplicationFiled: February 15, 2013Publication date: March 13, 2014Applicant: BROADCOM CORPORATIONInventors: Mohyee MIKHEMAR, David MURPHY, Ahmad MIRZAEI, Hooman DARABI
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Publication number: 20140071727Abstract: According to one disclosed embodiment, a content-addressable memory (CAM) system configured for reduced power consumption includes a sensing circuit utilized to apply a sense voltage to a matchline of the CAM system, a valid bit cell coupled to the matchline, and a power cut-off circuit configured to isolate the sense voltage from the matchline when an invalid validity state is stored in the valid bit cell, thereby reducing power consumption by the CAM system. In one embodiment, the power cut-off circuit isolates the sense voltage from the matchline by decoupling the sensing circuit from a control signal when an invalid validity state is stored in the valid bit cell.Type: ApplicationFiled: November 14, 2013Publication date: March 13, 2014Applicant: Broadcom CorporationInventors: Christopher Gronlund, Eric Hall
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Publication number: 20140073324Abstract: A multiservice communication device includes a plurality of transceivers that wirelessly transceive network data with a corresponding plurality of networks in accordance with a corresponding plurality of network protocols, wherein at least one of the plurality of transceivers further transceives control channel data with a remote management unit contemporaneously with the network data via a logical control channel carried using the corresponding one of the plurality of network protocols, wherein the control channel data includes local control data sent to the management unit and remote control data received from the management unit. A processing module processes the remote control data and generates a least one control signal in response thereto, the at least one control signal for adapting at least one of the plurality of transceivers based on the remote control data.Type: ApplicationFiled: November 11, 2013Publication date: March 13, 2014Applicant: BROADCOM CORPORATIONInventors: Vinko Erceg, Arya Reza Behzad, David Rosmann, Brima B. Ibrahim, Jeyhan Karaoguz, John Walley
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Publication number: 20140072036Abstract: A system and method are provided including a deblocker processor that reads a first data load for a first processing block from a buffer. The deblocker processor holds the first data load in a storage array in response to the first data load not including a valid value for a first quantization parameter and receives a second data load for a second processing block from the buffer. In response to the second data load including a valid value for a second quantization parameter, the deblocker processor processes the first processing block based on the second quantization parameter.Type: ApplicationFiled: December 13, 2012Publication date: March 13, 2014Applicant: BROADCOM CORPORATIONInventor: Timothy Hellman
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Publication number: 20140071963Abstract: A mobile device receives a signal, from a base station, comprising a primary synchronization sequence (PSS) and a secondary synchronization sequence (SSS). The mobile device utilizes two different sampling rates to perform the PSS synchronization and the SSS detection individually. For example, the mobile device synchronizes to the received PSS at a first sampling rate such as 0.96 MHz, which is determined based on the PSS transmission rate and/or the length of the received PSS. The mobile device detects the received SSS at a second sampling rate such as 1.92 MHz, which equals to the sampling rate for an analog-to-digital conversion at the mobile device. The received PSS and associated symbol timing are detected through the PSS synchronization to support the SSS detection. The detected SSS is used to acquire cell-specific parameters such as cell ID. The acquired cell-specific parameters ensure proper communications between the mobile device and the base station.Type: ApplicationFiled: November 11, 2013Publication date: March 13, 2014Applicant: Broadcom CorporationInventors: Francis SWARTS, Mark KENT
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Patent number: 8669758Abstract: A voltage measurement circuit is operative to measure a high voltage AC signal and includes a capacitive divider circuit and a compensator circuit. The capacitive divider circuit includes first and second inputs, across which, in use, is received a high voltage AC signal and also includes second and third capacitors. First and second plates of each of the first, second and third capacitors are defined by conductive layers of a printed circuit board and the dielectric of each of the first, second and third capacitors being defined by a non-conducting part of the printed circuit board. A compensator circuit has a configurable transfer function and includes an input connected across the first and second plates of the third capacitor and an output. The compensator circuit is operative to change a voltage received at its input in accordance with the transfer function and to provide the changed voltage at its output.Type: GrantFiled: July 23, 2013Date of Patent: March 11, 2014Assignee: Broadcom CorporationInventors: Iain Barnett, William Michael James Holland, Jonathan Ephraim David Hurwitz
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Patent number: 8669798Abstract: Designs of devices having digital phase locked loop (DPLL) circuits that include multiple digital feedback loops to generate high frequency clock signals by a digitally controlled oscillator (DCO). A time-to-digital converter (TDC) module is provided in such a DPLL circuit to receive an input reference clock signal and a first feedback clock signal from a first digital feedback loop and produces a digital TDC output indicative of a first phase error caused by a difference in time between the input reference clock signal and the first feedback clock signal. A second digital feedback loop is provided to generate a second digital feedback signal indicative of a second phase error caused by a difference in frequency between a desired clock signal and a generated clock signal generated by the DCO. The first and second digital feedback loops are coupled to the DCO to generate the high frequency clock signals.Type: GrantFiled: August 8, 2013Date of Patent: March 11, 2014Assignee: Broadcom CorporationInventors: Emmanouil Frantzeskakis, Georgios Sfikas, Stephen Wu, Radha Srinivasan, Henrik Tholstrup Jensen, Brima Ibrahim
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Patent number: 8669862Abstract: A device includes a processing module and a radio section. The processing module obtains location information regarding the device and converts it into a location signal. The radio section converts the location signal into a location wireless signal and transmits it within a local coverage area. A handheld device may use the location wireless signal to determine its location within a building.Type: GrantFiled: November 30, 2009Date of Patent: March 11, 2014Assignee: Broadcom CorporationInventor: Nambirajan Seshadri
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Patent number: 8670740Abstract: A direct sampling tuner includes a low noise amplifier and an optional dynamically configurable band pass filter coupled to the low noise amplifier. The optional filter is configured to pass a selected band of channels. The tuner further includes a relatively high accuracy, multi-bit analog-to-digital converter (“ADC”) coupled to the LNA or to the optional dynamically configurable band pass filter. The ADC operates at greater than about twice a frequency of a sampled signal. The ADC directly samples the spectrum of the selected channels at the Nyquist rate, thus avoiding image problems presented by conventional tuners.Type: GrantFiled: May 19, 2011Date of Patent: March 11, 2014Assignee: Broadcom CorporationInventor: Leonard Dauphinee
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Patent number: 8668580Abstract: A system and method for retaining, associating, and reloading a user's preferences in a video game system without requiring active participation from the user is provided. The system may include an object control mechanism for receiving a passive indication from the user to perform a fingerprint scan of the user's fingertip. A fingerprint scanner may be coupled to the object control mechanism for transparently performing the fingerprint scan to generate identifying data for the user. If the identifying data for the user matches identifying data for a preexisting user, then preferences associated with the preexisting user may be reloaded. If the identifying data for the user does not match identifying data for a preexisting user, then preferences of the user may retained and associated with the user's identifying data.Type: GrantFiled: May 8, 2012Date of Patent: March 11, 2014Assignee: Broadcom CorporationInventor: Michael James Muth
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Patent number: 8670509Abstract: Adaptive path selection for interference cancellation is provided for wireless communication devices. Signal strength metrics are obtained for each of multiple signal paths. One or more of the signal paths are selected as cancellation candidates in response to determining that the signal paths are associated with a strong interfering path based at least in part on the signal strength metrics for the signal paths and threshold criteria. Cancellation is enabled for an estimated signal generated using the signal paths in response to the signal paths being selected as cancellation candidates.Type: GrantFiled: March 29, 2012Date of Patent: March 11, 2014Assignee: Broadcom CorporationInventors: Nelson Sollenberger, Rami Mehio, Wei Luo, Severine Catreux, Sean Truong, Oghenekome Oteri
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Patent number: 8670510Abstract: Aspects of a method and system for channel estimation in a MIMO communication system with multiple RF chains for WCDMA/HSDPA may comprise receiving a plurality of communication signals from a plurality of transmit antennas. A plurality of vectors of baseband combined channel estimates may be generated based on phase rotation of the received plurality of communication signals. A matrix of processed baseband combined channel estimates may be generated based on the generated plurality of vectors of baseband combined channel estimates. A plurality of amplitude and phase correction signals may be generated based on the generated plurality of vectors of baseband combined channel estimates. An amplitude and a phase of at least a portion of the received plurality of communication signals may be adjusted based on the generated plurality of amplitude and phase correction signals, respectively.Type: GrantFiled: April 8, 2013Date of Patent: March 11, 2014Assignee: Broadcom CorporationInventors: Mark Kent, Vinko Erceg, Uri M. Landau, Pieter van Rooyen
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Patent number: 8670638Abstract: Methods and apparatus are disclosed for wirelessly communicating among integrated circuits and/or functional modules within the integrated circuits. A semiconductor device fabrication operation uses a predetermined sequence of photographic and/or chemical processing steps to form one or more functional modules onto a semiconductor substrate. The functional modules are coupled to an integrated waveguide that is formed onto the semiconductor substrate and/or attached thereto to form an integrated circuit. The functional modules communicate with each other as well as to other integrated circuits using a multiple access transmission scheme via the integrated waveguide. One or more integrated circuits may be coupled to an integrated circuit carrier to form Multichip Module. The Multichip Module may be coupled to a semiconductor package to form a packaged integrated circuit.Type: GrantFiled: September 29, 2011Date of Patent: March 11, 2014Assignee: Broadcom CorporationInventors: Ahmadreza Rofougaran, Arya Reza Behzad, Sam Ziqun Zhao, Jesus Alfonso Castaneda, Michael Boers
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Patent number: 8670990Abstract: Systems and methods are described that utilize dynamic time scale modification (TSM) to achieve reduced bit rate audio coding. In accordance with embodiments, different levels of TSM compression are selectively applied to segments of an input speech signal prior to encoding thereof by an encoder. Encoded TSM-compressed segments are received at a decoder which decodes such segments and then applies an appropriate level of TSM decompression to each based on information received from the encoder. By selectively applying different levels of TSM compression to segments of an input speech signal prior to encoding, a coding bit rate associated with the encoder/decoder is reduced. Furthermore, by selecting a level of TSM compression for each segment of the input speech signal that takes into account certain local characteristics of that signal, such bit rate reduction is provided without introducing unacceptable levels of distortion into an output speech signal produced by the decoder.Type: GrantFiled: July 30, 2010Date of Patent: March 11, 2014Assignee: Broadcom CorporationInventors: Juin-Hwey Chen, Hong-Goo Kang, Robert W. Zopf, Jes Thyssen