Patents Assigned to Broadcom
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Publication number: 20140177517Abstract: A method, apparatus and computer program product are provided for scheduling or assigning a transmission opportunity. A method and apparatus may assign a relay transmission opportunity to at least one intermediate node designating a resource, among a plurality of resources, of a scheduled transmission opportunity of a signal. The intermediate node is assigned to communicate with at least one designated station during the designated time period. The method and apparatus may broadcast information of the signal to enable the designated station to detect data of the signal indicating that the station is assigned to communicate with the intermediate node during the designated resource of the scheduled transmission opportunity.Type: ApplicationFiled: December 19, 2013Publication date: June 26, 2014Applicant: Broadcom CorporationInventors: Timo KOSKELA, Anna PANTELIDOU, Sami-Jukka HAKOLA, Samuli TURTINEN
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Publication number: 20140177741Abstract: A communication device is operative to generate and orthogonal frequency division multiplexing (OFDM) symbol that includes one or more data and ranging modulation symbols. The data and ranging modulation symbols may be included within different sub-carriers of the OFDM symbol. The OFDM symbol is used to generate an OFDM symbol pair in the frequency domain (FDOM). After conversion from the FDOM to the time domain (TDOM), the OFDM symbol pair may then undergoes post-processing in the TDOM before transmission. Such post-processing may include the addition of cyclic prefix (CP) and cyclic suffix (CS) to the OFDM symbol pair in the TDOM as well as filtering using a window function. The OFDM symbol may be generated as an orthogonal frequency division multiple access (OFDMA) symbol, and two were more OFDM symbols or OFDMA symbols may be arranged in a frame.Type: ApplicationFiled: December 12, 2013Publication date: June 26, 2014Applicant: BROADCOM CORPORATIONInventors: Hong Liu, Avi Kliger, Jeffrey S. Putnam, Leo Montreuil, Jonathan S. Min, Ravi Rajagopal
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Publication number: 20140177557Abstract: In some examples, the method, apparatus and computer program product as described herein is configured for cell Discontinuous Transmission. In this regard, a method is provided that includes receiving an indication of a discovery of a cell by a communications device. The method of this embodiment may also include determining the cell based on the indication. The method of this embodiment may also include causing the cell to transition to an activated state from a dormant state.Type: ApplicationFiled: December 19, 2013Publication date: June 26, 2014Applicant: Broadcom CorporationInventors: Gilles CHARBIT, Erlin ZENG
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Publication number: 20140177768Abstract: A receiver is disclosed that is capable of correcting for harmonic distortion injected into received analog signals. The receiver splits the analog signal in the analog front-end and modifies the split analog signals with a difference signal. After amplification and/or sampling, the modified analog signals are recombined in a main data pathway and are kept separate in a secondary pathway. Utilizing the difference signal, a feedback loop that includes distorters and an LMS filter detects the distortion coefficient of the harmonic distortion. A distorter in the main data pathway utilizes the detected distortion coefficient to correct the harmonic distortion in the analog signal.Type: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Applicant: Broadcom CorporationInventors: Frank van der Goes, Jan Roelof Westra
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Publication number: 20140177641Abstract: A system and a method include a port extender communicatively linked to a controlling bridge. Network data is received from a local network peer downstream to the port extender. Whether a destination of the network data is a recognized downstream network peer of the port extender is determined. The network data is selectively routed according to whether the destination of the network data is a recognized downstream network peer of the port extender.Type: ApplicationFiled: January 4, 2013Publication date: June 26, 2014Applicant: Broadcom CorporationInventors: Mohan Kalkunte, Nicholas Kucharewski
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Publication number: 20140177441Abstract: Wireless mobile communication (WMC) devices located in operating proximity of each other may be enabled to form a mesh (ad hoc wireless) network. WMC devices in a mesh network may form a queuing system wherein each WMC device may store data forwarded to and/or from other WMC devices in the mesh network. Each WMC device in the mesh network may have different queuing capability based on a plurality of factors that may comprise internal factors such as processing, storage, power, and/or connectivity. The mesh network may comprise an internal addressing scheme that may enable utilization of the queuing system whether or not WMC devices in the mesh network are communicatively coupled to external networks.Type: ApplicationFiled: October 21, 2013Publication date: June 26, 2014Applicant: Broadcom CorporationInventors: Alexander Garland MacInnis, Thomas Quigley, Arya Reza Behzad, Jeyhan Karaoguz, John Walley, Mark Buer
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Patent number: 8760198Abstract: A line driver includes a transconductance stage that senses a differential voltage present at differential output nodes. The transconductance stage replicates a fraction of the differential voltage and generates a differential output current corresponding to the replicated differential voltage. The differential output current flows through a current mirror stage that mirrors the differential output current to the differential output nodes. The line driver thereby decouples the transconductance stage from the differential output nodes. A lower line driver voltage supply (e.g., 1.8 V) may therefore supply the differential output nodes. A transconductance stage voltage supply separate from the line driver voltage supply may provide the supply voltage for the transconductance stage.Type: GrantFiled: December 27, 2011Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventor: Karthik Swaminathan
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Patent number: 8761710Abstract: A portable computing device includes an FEM, a SAW-less receiver, a SAW-less transmitter, and a baseband processing unit. The FEM isolates one or more outbound RF signals from one or more inbound RF signals. The SAW-less receiver converts the one or more inbound RF signals into one or more inbound intermediate frequency (IF) signals by frequency translating a baseband filter response to an IF filter response and/or an RF filter response. The SAW-less receiver filters the inbound RF signal(s) in accordance with the RF filter response and/or filters the inbound IF signal(s) in accordance with the IF filter response. The SAW-less receiver then converts the inbound IF signal(s) into inbound symbol stream(s). The SAW-less transmitter converts outbound symbol stream(s) into the outbound RF signal(s). The baseband processing unit converts outbound data into the outbound symbol stream(s) and convert the inbound symbol stream(s) into inbound data.Type: GrantFiled: March 30, 2011Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventors: Ahmadreza (Reza) Rofougaran, Hooman Darabi
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Patent number: 8761126Abstract: Methods and systems of a mobile station transmitting information to a base station are disclosed. The mobile station may transmit information with improved uplink coverage, and bandwidth requests may be more efficient. Additionally, the mobile station may transmit information over multiple uplink frames using hybrid ARQ.Type: GrantFiled: March 22, 2011Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventors: Kamlesh Rath, Rishi Ranjan, Manish Airy, Sindhu Verma, Soumen Chakraborty
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Patent number: 8761666Abstract: A method and apparatus is disclosed to compensate for overshoot and/or undershoot in a transmission sequence by shaping the transmission sequence according to a shaping envelope to lengthen its rise time and/or fall time to provide a modified transmission sequence. The shaping envelope may represent a trigonometric function, a polynomial function, a piecewise function or any other function that lengthens the rise time and/or the fall time of the transmission sequence. The modified transmission sequence adjusts an impedance of an antenna to load modulate a carrier wave that is inductively coupled to it.Type: GrantFiled: October 12, 2011Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventor: David S. Clarke
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Patent number: 8761755Abstract: A communication device may include a Physical (PHY) layer configured to provide multiple communication services across a communication network. The communication device may adjust the PHY layer according to a first set of performance characteristics to provide a first communication service. When the device identifies a communication service change to the second communication service, the communication device may adjust the PHY layer according to a second set of performance characteristics, different from the first set, to provide the second communication service. The communication device may also receive a configuration indication from an application executing on the device specifying a performance characteristic change to the PHY layer. The communication device may also include multiple independent PHY layers that may adjusted independently.Type: GrantFiled: July 25, 2012Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventor: Jeyhan Karaoguz
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Patent number: 8763141Abstract: A method and system are provided in which a broadband gateway may handle at least one physical layer connection to at least one corresponding network access service provider. The broadband gateway may receive content comprising an application through the at least one network access service provider and may store the content in a first portion of a memory. A software agent may be utilized to request the content and/or to store the received content in the first portion of the memory. The broadband gateway may execute the application after access by the application to a second portion of the memory is disabled. After the execution of the application is completed, access to the second portion of the memory may be enabled. In some instances, the application may be verified to determine whether it is secure for utilization and/or distribution. When verification fails, the application may be deleted.Type: GrantFiled: December 30, 2010Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventors: Rich Prodan, Jeyhan Karaoguz, Xuemin Chen, Wael William Diab, David Garrett, David Lundgren
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Patent number: 8761790Abstract: Aspects of a method and system for best-M CQI feedback together with PMI feedback may include generating a plurality of feedback messages, which may be communicated from a mobile station to a base station, wherein at least one of the generated plurality of feedback messages may be associated with each corresponding selected one of a plurality of Channel Quality Indicator (CQI) reporting units. The at least one of the generated feedback messages may comprise CQI information and Pre-coding Matrix Index (PMI) information, which may both be associated with the selected one of the plurality of CQI reporting units. At least one other of the generated plurality of feedback messages may comprise an aggregate CQI information, which is based on one or more of the plurality of CQI reporting units.Type: GrantFiled: April 9, 2012Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventors: Mark Kent, Vinko Erceg, Jun Zheng
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Patent number: 8760212Abstract: A level shifter and method are disclosed. In one embodiment, the level shifter includes a DC biasing component connected with both an AC coupling component and a high voltage output amplifier. The AC coupling component receives an input signal from a low voltage domain and output a first voltage signal. The DC biasing component is configured to bias the first voltage signal using a bias voltage based on a previous output signal in a high voltage domain. The high voltage output amplifier is configured to amplify the DC biased voltage signal in the high voltage domain and provide an output signal in the high voltage domain.Type: GrantFiled: October 31, 2012Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventor: Erol Arslan
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Patent number: 8761669Abstract: Methods and systems for chip-to-chip communication via on-chip leaky wave antennas are provided. In this regard, RF signals may be communicated between a first leaky wave antenna in a first integrated circuit and a second leaky wave antenna in a second integrated circuit, where the first integrated circuit and the second integrated circuit are housed in a single integrated circuit package. The first integrated circuit and the second integrated circuit may be electrically isolated from one another. One or both of the first leaky wave antenna and the second leaky wave antenna may comprise a pair of coplanar conductive lines. Spacing between the coplanar conductive lines may be configured by applying a voltage which causes one or both of the coplanar conductive lines to deflect towards or away from the other one of the coplanar conductive lines.Type: GrantFiled: June 9, 2010Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventors: Ahmadreza Rofougaran, Maryam Rofougaran
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Patent number: 8760574Abstract: An image processing method for frame rate conversion, comprising: receiving a stream of input pictures at an input frame rate, at least some of the input pictures being new pictures, the new pictures appearing within the stream of input pictures at an underlying new picture rate; generating interpolated pictures from certain ones of the input pictures; outputting a stream of output pictures at an output frame rate, the stream of output pictures including a blend of the new pictures and the interpolated pictures, the interpolated pictures appearing in the stream of output pictures at an average interpolated picture rate; and causing a variation in the average interpolated picture rate in response to detection of a variation in the underlying new picture rate.Type: GrantFiled: April 30, 2009Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventors: Larry Pearlstein, Samir Hulyalkar
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Patent number: 8760197Abstract: A system, method, and computer program product are provided for the switching of clock signals. A clock network switching system includes a first re-synchronization circuit coupled to a first input clock, and a second re-synchronization circuit coupled to a second input clock. There is also an input select decoder coupled to the first and second re-synchronization circuit that can dynamically select either the first or the second input clock to be active. When an input clock is selected to be active, the re-synchronization circuit associated with the selected input clock generates an output clock synchronized with the selected input clock where both a high pulse width and a low pulse width of the output clock are not less than those of the selected input clock.Type: GrantFiled: March 29, 2011Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventor: Iraj Motabar
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Patent number: 8761752Abstract: Aspects of a method and system for dynamic adjustment of power, antenna direction and frequencies in a femtocell network are provided. In this regard, a communication system may comprise a plurality of femtocells, one or more base stations, and a femtocell management entity that coordinates operation of the plurality of femtocells. One or more parameters may be communicated from one of the plurality of femtocells and/or one or more base stations to the femtocell management entity. The femtocell management entity may be enabled to utilize the one or more parameters to determine configuration information for one of the plurality of femtocells and/or for one or more remaining ones of the plurality of femtocells. One of the plurality of femtocells may be enabled to receive the determined configuration information from the femtocell management entity. One of the plurality of femtocells may be configured utilizing the received determined configuration information.Type: GrantFiled: May 8, 2013Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventors: Vinko Erceg, Charles Abraham, Xuemin Chen, Wael William Diab, Victor Hou, Jeyhan Karaoguz, Mark Kent
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Patent number: 8761328Abstract: An update algorithm for equalizer coefficients in a communications system using phase correction symbols. Instead of using a traditional all symbols slicer update algorithm, the equalizer is updated during phase correction symbols for optimal performance in low signal-to-noise ratio conditions. In lower signal-to-noise ratio conditions, the equalizer uses a phase correction circuit to compensate for distortion caused by a communication channel when a demodulated data stream contains an unknown phase offsets resulting from a fast dynamic distortion. More specifically, the phase correction circuit uses a phase correction signal to correct for the unknown phase offsets in a demodulated data stream in lower signal-to-noise ratio conditions. The equalizer then corrects for distortion caused by the communication channel based upon the phase corrected demodulated data stream.Type: GrantFiled: January 25, 2012Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventors: Tommy Yu, Amy Gayle Hundhausen
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Patent number: 8761200Abstract: A home network, in one embodiment including a home wiring system; a demarcation point unit in electrical communication with the home wiring system; and a home network module in electrical communication with the home wiring system. The home network module is adapted for connection to a home electronic device. The demarcation point unit passes data to and receives data from the home electronic device through the home network module.Type: GrantFiled: August 30, 2001Date of Patent: June 24, 2014Assignee: Broadcom CorporationInventors: Avi Kliger, Rami Kopelman, Nachum Avishay, Alon Shtern, Amir Wassermann