Patents Assigned to Broadcom
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Patent number: 9148252Abstract: A communication system and a method are disclosed. The communication system includes an encoder configured to encode source data and output an encoded frame including a plurality of rows and a plurality of columns. The plurality of rows include a row component code. The plurality of columns include a column component code. The row component code is configured to achieve a lower bit error rate than the column component code in communication channels having a same signal to noise ratio.Type: GrantFiled: April 5, 2013Date of Patent: September 29, 2015Assignee: Broadcom CorporationInventor: Zhongfeng Wang
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Patent number: 9148275Abstract: Techniques are described herein that receive communications transmitted according to different operation modes at a multi-mode, programmable receiver system. The multi-mode, programmable receiver system may receive communication signals from transmit antennas in “cells” (e.g., base station transceivers and/or the like) according to one or more operation modes, using receive antennas. The received signals may be converted and processed by various modules of the multi-mode, programmable receiver system to produce an output signal. The multi-mode, programmable receiver system includes modules that are programmable to be selectively enabled or disabled according to an operation mode in accordance with which the multi-mode, programmable receiver system operates.Type: GrantFiled: February 24, 2014Date of Patent: September 29, 2015Assignee: Broadcom CorporationInventor: Fu-Hsuan Chiu
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Patent number: 9148233Abstract: Methods and systems for coexistence in a multiband, multistandard communication system utilizing a plurality of phase locked loops (PLLs) are disclosed. Aspects may include determining one or more desired frequencies of operation of a transceiver, determining a frequency of unwanted signals such as spurs, intermodulation, and/or mixing product signals, and configuring the Plls to operate at a multiple of the desired frequencies while avoiding the unwanted signals. The desired frequencies may be generated utilizing integer, which may include multi-modulus dividers. The wireless standards may include LTE, GSM, EDGE, GPS, Bluetooth, WiFi, and/or WCOMA, for example. The frequencies may be configured to mitigate interference. Plls may be shared when operating in TOO mode, and used separately operating in FOO mode. One or more digital interface signals, zero exceptions on a transmitter spur emission mask, and sampling clocks for AOCs and/or DACs in the transceiver may be generated utilizing the PLLs.Type: GrantFiled: September 13, 2012Date of Patent: September 29, 2015Assignee: Broadcom CorporationInventors: Nikolaos Haralabidis, Ioannis Kokolakis, Nikolaos Kanakaris, Konstantinos Vavelidis
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Publication number: 20150271105Abstract: Disclosed are various embodiments for multi-homing in an extended bridge, including both multi-homing of port extenders and multi-homing of end stations. In various embodiments, a controlling bridge device receives a packet via an ingress virtual port and determines a destination virtual port link aggregation group based at least in part on a destination media access control (MAC) address of an end station in the packet. The controlling bridge device selects one of multiple egress virtual ports of the destination virtual port link aggregation group. The end station of the extended bridge is reachable through any of the egress virtual ports of the destination virtual port link aggregation group. The controlling bridge device forwards the packet through the selected egress virtual port, and the forwarded packet includes an identifier of a destination virtual port to which the end station is connected.Type: ApplicationFiled: June 5, 2015Publication date: September 24, 2015Applicant: Broadcom CorporationInventors: Rupa BUDHIA, Biju Ravindranatha BABU, Mohan Venkatachar KALKUNTE, Puneet AGARWAL
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Publication number: 20150271706Abstract: Systems and methods are provided for determining precedence between Radio Access Network (RAN) rules and Access Network Discovery and Selection Function (ANDSF) rules when a mobile communication device has access to more than one set of rules for offloading data. Systems and methods for transmitting an offloadable Access Point Name (APN) to a mobile communication device when RAN rules are used. Embodiments of the present disclosure combine the advantages of signaling methods when offloading information to a mobile communication device after a RAN rule has been satisfied such that a base station is able to broadcast a signal that enables all devices camped on an serving cell to offload to the APN.Type: ApplicationFiled: March 18, 2015Publication date: September 24, 2015Applicant: Broadcom CorporationInventors: Florin BABOESCU, Dutt Kalapatapu, Shao-Cheng Wang
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Publication number: 20150270611Abstract: An arrangement for modifying a printed circuit antenna of the type used in mobile communication devices includes introducing one or more discontinuities into a printed circuit pattern of the antenna so that it is not activated at undesired frequencies. Examples of discontinuities include localized narrowing the printed circuit strip, localized widening of the printed circuit strip and localized changing of the shape of the printed circuit strip.Type: ApplicationFiled: June 3, 2015Publication date: September 24, 2015Applicant: Broadcom CorporationInventor: Andrew PIENKOWSKI
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Publication number: 20150271765Abstract: A device includes circuitry configured to determine that pending transmissions on two or more physical channels overlap in time and determine that a total transmit power of the pending transmissions exceeds a maximum transmit power. The circuitry is also configured to assign priorities to the pending transmissions based on one or more predetermined criteria. Power scaling is applied to at least one lower priority transmission so that the total transmission power of the pending transmissions is less than or equal to the maximum transmit power.Type: ApplicationFiled: March 23, 2015Publication date: September 24, 2015Applicant: BROADCOM CORPORATIONInventors: Sami Jukka HAKOLA, Helka-Liina MAATTANEN, Karl Marko Juhani LAMPINEN
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Publication number: 20150271705Abstract: Systems and methods are provided for determining precedence between Radio Access Network (RAN) rules and Access Network Discovery and Selection Function (ANDSF) rules when a mobile communication device has access to more than one set of rules for offloading data. Systems and methods for transmitting an offloadable Access Point Name (APN) to a mobile communication device when RAN rules are used. Embodiments of the present disclosure combine the advantages of signaling methods when offloading information to a mobile communication device after a RAN rule has been satisfied such that a base station is able to broadcast a signal that enables all devices camped on an serving cell to offload to the APN.Type: ApplicationFiled: March 18, 2015Publication date: September 24, 2015Applicant: Broadcom CorporationInventors: Florin BABOESCU, Dutt Kalapatapu, Shao-Cheng Wang, Pavan Nuggehalli, Hannu Hietalahti
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Patent number: 9143129Abstract: Embodiments of the present invention relate generally to detector circuits. Embodiments provide a low-power, accurate reference-free threshold detector. In particular, embodiments reduce leakage current at low input levels and prevent shoot through current for higher than nominal low input levels. Further, embodiments require no bandgap or accurate reference, and as a result eliminate the need for a constantly ON bandgap or accurate reference circuit. As such, embodiments have significantly reduced power consumption compared to conventional circuits. In addition, embodiments detect correctly low and high input levels that are separated narrowly and that may have wide ranges. Embodiments can be extended to any particular design choice of low and high input levels and corresponding output levels.Type: GrantFiled: September 17, 2009Date of Patent: September 22, 2015Assignee: Broadcom CorporationInventor: Jeffrey Chin
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Patent number: 9143770Abstract: Application programming interfaces (APIs) are provided that enable applications to display two-dimensional and three-dimensional content in regions of a display screen. A first command is received from an application directing at least in part a first configuration of a first region of the screen to support the three-dimensional content. The first command is responded to by sending a first configuration request to place the screen in a three-dimensional mode within the first region. A second command is received directing at least in part a second configuration of a second region of the screen to support the two-dimensional content. The second command is responded to by sending a second configuration request to place the screen in mode corresponding to a two-dimensional mode within the second region.Type: GrantFiled: December 30, 2010Date of Patent: September 22, 2015Assignee: Broadcom CorporationInventors: James D. Bennett, Jeyhan Karaoguz
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Patent number: 9143308Abstract: There is provided a mechanism for conducting power control in a time division based communication. Subframes of a frame structure of the time division based communication are classified into at two or more classification sets, each classification set comprising at least one subframe. For each of the classification sets, power control related parameters are selected in accordance with the interference on the respective subframes. On the basis of the selected power control related parameters, a power control parameter set is configured defining a power control setting for each subframe of the frame structure. A UE receiving the power control parameter set applies the power control related parameters in the power control.Type: GrantFiled: July 5, 2011Date of Patent: September 22, 2015Assignee: BROADCOM CORPORATIONInventors: Jing Han, Chunyan Gao, Haiming Wang
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Patent number: 9140739Abstract: According to one disclosed embodiment, an on-chip resistor calibration circuit includes an RC oscillator having a test resistor and a precision capacitor as elements, a counter, and a reference clock. In one embodiment, an RC oscillator generates a waveform having a period dependent upon the resistance of the test resistor and the capacitance of the precision capacitor. In such an embodiment, a counter and a reference clock may be configured to measure the period of the waveform. Using a pre-determined capacitance of the precision capacitor, a resistance of the test resistor may be determined. In another embodiment, an RC oscillator generates first and second waveforms through use of an additional capacitor that can be switched in and out of the RC oscillator circuit. Using a pre-determined capacitance of the precision capacitor, an RC product of the test resistor and the additional capacitor may be determined.Type: GrantFiled: June 27, 2013Date of Patent: September 22, 2015Assignee: BROADCOM CORPORATIONInventors: Alireza Zolfaghari, Chin-Ming Chien, Bojko Marholev
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Patent number: 9143464Abstract: Systems, apparatuses and methods are disclosed for using elastic buffers in fiber channel systems over twisted pair links. One such system includes a fiber channel host device and another fiber channel host device communicatively coupled to the fiber channel device over a twisted pair link. The system also includes a slave physical layer (PHY) circuit residing in the fiber channel host device and a master PHY circuit residing in the another fiber channel host device. The master PHY circuit is operable to transmit, using a reference clock, data from a transmit elastic buffer. The slave PHY circuit is operable to receive the data transmitted by the master PHY circuit and to store the received data using a derived clock recovered from the received data.Type: GrantFiled: November 5, 2012Date of Patent: September 22, 2015Assignee: Broadcom CorporationInventor: Ali Ghiasi
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Patent number: 9143164Abstract: According to an exemplary embodiment, a serializer includes upper and lower shift registers configured to perform a load function where parallel input data is loaded from a parallel input bus and a shift function where the parallel input data is shifted to an output register. The upper shift register is configured to perform the load function while the lower shift register performs the shift function, and the lower shift register is configured to perform the load function while the upper shift register performs the shift function. An output register is configured to alternately receive the parallel input data from the upper shift register and the parallel input data from the lower shift register. The upper and lower shift registers and the output register can comprise scan flip-flops.Type: GrantFiled: August 15, 2013Date of Patent: September 22, 2015Assignee: BROADCOM CORPORATIONInventors: Hua-Feng Chen, Karthik Chandrasekharan, Ramamurthy Gorti, Gregory Djaja, Douglas Smith
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Patent number: 9143376Abstract: Systems and methods are provided for efficient tree-based detection of multi-carrier modulated signals, such as Orthogonal Frequency Division Multiplexing (OFDM) symbols. In an embodiment, a plurality of signals occupying respective tones are received and processed to determine an order, based on a tone quality metric, for the plurality of signals. The plurality of signals are then dispatched to a pool of tree detectors in accordance with the order. In an embodiment, the order ensures that signals occupying higher quality tones, and requiring shorter detection times, are dispatched first to the pool of tree detectors. In another embodiment, a maximum runtime of busy tree detectors of the pool is updated based signal on actual detection times to exploit the time slack of early terminating detectors.Type: GrantFiled: September 4, 2013Date of Patent: September 22, 2015Assignee: Broadcom CorporationInventors: Louay Jalloul, Mohammad Mansour, Sam Alex
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Patent number: 9142877Abstract: Disclosed are various embodiments for controlling an output power of a transmitter. Adjustment amounts for a transmitter to transmit at a desired power level are determined. For a predetermined time period, an actual power level of the transmitter is adjusted at a first adjustment rate. Upon an expiration of the predetermined time period, the actual power level is adjusted at a second adjustment rate, wherein the second adjustment rate is slower than the first adjustment rate.Type: GrantFiled: June 29, 2012Date of Patent: September 22, 2015Assignee: BROADCOM CORPORATIONInventors: Sofoklis Plevridis, Anastasios Karakasiliotis, Radhakrishnan Kuzhipatt, Kai Xie
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Patent number: 9143994Abstract: 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: GrantFiled: November 18, 2013Date of Patent: September 22, 2015Assignee: Broadcom CorporationInventor: Jeyhan Karaoguz
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Patent number: 9143731Abstract: A mobile video device includes a transceiver module that receives an independent video layer stream and at least one dependent video layer streams that require the independent video layer for decoding. A decoder module produces a decoded video signal from at least one separate video stream chosen, based on the device parameter, from the independent video layer stream and at least one dependent video layer streams.Type: GrantFiled: January 2, 2008Date of Patent: September 22, 2015Assignee: Broadcom CorporationInventors: Stephen E. Gordon, Sherman (Xuemin) Chen, Michael Dove, David Rosmann, Thomas J. Quigley, Jeyhan Karaoguz
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Patent number: 9143202Abstract: A NFC communicator or NFC communications enabled device has a data store to store data, a coupler to couple inductively with the magnetic field of a radio frequency signal and a signal generator to supply a radio frequency signal to the coupler. A modulator is provided to modulate a radio frequency signal in accordance with data and a demodulator is provided to extract data from a modulated radio frequency signal inductively coupled to the coupler. A controller enables the NFC communicator or NFC communications enabled device both to initiate near field radio frequency communication with another near field RF communicator and to respond to near field radio frequency communication initiated by another near field RF communicator. The NFC communicator or NFC communications enabled device also has a power deriver that derives power from a radio frequency signal inductively coupled to the coupler to charge a chargeable power supply.Type: GrantFiled: March 28, 2013Date of Patent: September 22, 2015Assignee: Broadcom Europe LimitedInventor: Peter Robert Symons
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Patent number: 9143199Abstract: An NFC communicator has an antenna circuit to enable inductive coupling, via an RF H field, of the NFC communicator and another near field RF communicator in near field range. The antenna circuit has an antenna element coupled in parallel with a first capacitor to form a parallel LC circuit. The antenna element has an antenna coil in series with a second capacitor to reduce the voltage to which circuitry of the NFC communicator is subjected by a received RF H field. Alternatively or additionally, receive circuitry of the NFC communicator may be coupled to only a proportion of the antenna coil to reduce the voltage to which circuitry of the NFC, communicator is subjected by a received RF H field.Type: GrantFiled: June 10, 2013Date of Patent: September 22, 2015Assignee: Broadcom Europe LimitedInventors: Joakim Bangs, Robin Wilson, Franz Fuchs