Patents Assigned to Broadcom
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Publication number: 20150015236Abstract: A consumer consumption monitoring system includes a plurality of measurement devices disposed in corresponding supply paths of coupled consumer devices located within a building. A network node circuit coupled to the plurality of measurement devices retrieves measurement data from the plurality of measurement devices, and stores and analyzes the measurement data over time to develop one or more consumer device consumption profiles.Type: ApplicationFiled: September 30, 2014Publication date: January 15, 2015Applicant: BROADCOM EUROPE LIMITEDInventors: Jonathan Ephraim David Hurwitz, Dale Stubbs
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Patent number: 8934836Abstract: A wireless communication device for communicating in the near-field via active load modulation. The device including an antenna configured to receive a magnetic field, a recovery device configured to recover a clock from the magnetic field, and a multiplexer configured to receive the recovered clock and a reference clock, and to output one of the recovered clock and the reference clock based on a current operational state of the wireless communication device, The wireless communication device further including a shunt regulator configured to produce the active load modulation by modulating an impedance of the wireless communication device, a phase-locked loop (PLL) configured to receive one of the recovered clock and the reference clock and to utilize the received clock to control the active load modulation, and a driver configured to contribute to the active load modulation by adjusting an amplitude of a voltage across the antenna.Type: GrantFiled: June 28, 2012Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventor: Alastair Lefley
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Patent number: 8935542Abstract: Aspects of a method and system for a connector with integrated power over Ethernet functionality are provided. In this regard, one or more circuits and/or processors that reside within and/or on a connector may be operable to manage a supply power that is delivered over a cable based on characteristics of the connector and/or characteristics of the cable. The cable may carry the supply power while concurrently carrying data communications. The one or more circuits and/or processors may be operable to source and sink the supply power. The one or more circuits and/or processors may be operable to control which one or more conductors of the cable are utilized for conveying the supply power.Type: GrantFiled: March 31, 2010Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Wael William Diab, Kevin Brown
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Patent number: 8934372Abstract: A system and method for next generation BASE-T communication. Next generation BASE-T devices designed for communication over twisted pair Ethernet cabling are configurable based on the characteristics of the communication channel. In discovering the characteristics of the communication channel, the physical layer device (PHY) can select one of a plurality of operating modes that can support a given data transmission rate (e.g., 10 Gbit/s, 40 Gbit/s, 100 Gbit/s, 400 Gbit/s, etc.).Type: GrantFiled: March 5, 2013Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Wael William Diab, William Calvin Woodruff
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Patent number: 8934435Abstract: A user's request via a portable or handheld wireless communication device (HWCD) to process data may result in discovery of one or more networked resources capable of handling the processing. One or more communication routes may be established between one or more discovered network resources and one or more of the HWCD and a networked terminating device. The portable HWCD may be configured as a gateway. The user's identity may be determined and the user's personal networking preferences may be acquired. Based user's preferences, a route may be established between discovered networked resources and one or more of the HWCD and the networked terminating device. The user's identity may be authenticated. Data may undergo rate and/or format conversion. The data may be protected by secure operations. One or more of the HWCD and the networked terminating device may consume or render the requested data.Type: GrantFiled: December 10, 2012Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Alexander MacInnis, Arya Behzad, Mark Buer, Jeyhan Karaoguz, Thomas Quigley, John Stuart Walley
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Patent number: 8933757Abstract: 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: GrantFiled: September 11, 2012Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Farid Shirinfar, Tirdad Sowlati, Maryam Rofougaran, Ahmadreza Rofougaran
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Patent number: 8934572Abstract: 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: GrantFiled: August 25, 2011Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Jun Zheng, Min Chuin Hoo, Vinko Erceg
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Patent number: 8934853Abstract: Embodiments of the present disclosure use shared oscillator for cellular communications and location detection in a communication device. The communications device estimates a frequency offset of one of its subsystems. The communications device determines a frequency offset that results from drifting of this shared oscillator, typically caused by aging and/or changes in temperature, voltage, humidity, pressure, and/or vibration to provide some examples, from the frequency offset this subsystem. The communications device provides various compensation parameters to its various subsystems to compensate for the frequency offset that results from drifting of the oscillator.Type: GrantFiled: June 8, 2012Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Robert Lorenz, Kamesh Medapalli, Frank Van Diggelen, Charlie Abraham
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Patent number: 8934386Abstract: Embodiments of the present invention enable power-save methods for wireless networks. Embodiments of the present invention are compliant with the IEEE 802.11 protocol. Further, embodiments of the present invention are readily inter-operable with other third party implementations.Type: GrantFiled: December 18, 2009Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Mahesh Iyer, Kapil Chhabra, Yury Gonikberg
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Patent number: 8934503Abstract: A supervisory communications device, such as a headend device within a communications network, monitors and controls communications with a plurality of remote communications devices throughout a widely distributed network. The supervisory device allocates bandwidth on the upstream channels by sending MAP messages over its downstream channel. A highly integrated media access controller integrated circuit (MAC IC) operates within the headend to provide lower level processing on signals exchanged with the remote devices. The enhanced functionality of the MAC IC relieves the processing burden on the headend CPU and increases packet throughput. The enhanced functionality includes header suppression and expansion. DES encryption and decryption, fragment reassembly, concatenation, and DMA operations.Type: GrantFiled: June 14, 2013Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Lisa Voigt Denney, Hooman Moshar, John Daniel Horton, Shane Patrick Lansing, Sean Francis Nazareth, Niki Roberta Pantelias
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Patent number: 8934493Abstract: Techniques, systems and apparatus are described for implementing an inter-channel ring interface in a communication device. A communication device can include communication channels to carry data at respective first data throughputs. An inter-channel ring interface connects at least some of the communication channels in a ring configuration to form an aggregated group of channels that operates as a single channel at a second data throughput.Type: GrantFiled: April 12, 2011Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Rahul Durve, Rajesh Satapathy, Chung-Jue Chen, Tiruvur Arun
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Patent number: 8934483Abstract: A method of transferring data in a network is provided. Data is received at a sub-switch of a first bundled switch having a plurality of sub-switches, the sub-switch being configured to only couple to connections external to the first bundled switch. The method also includes transferring the data from the first bundled switch using a multi-lane cable coupled to a second bundled switch, a first end of the multi-lane cable coupled to a sub-switch in the first bundled switch and a second end of the multi-lane cable coupled to at least two sub-switches in the second bundled switch.Type: GrantFiled: September 16, 2011Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventor: Ariel Hendel
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Patent number: 8932912Abstract: According to one embodiment, a one-time programmable (OTP) device having a lateral diffused metal-oxide-semiconductor (LDMOS) structure comprises a pass gate including a pass gate electrode and a pass gate dielectric, and a programming gate including a programming gate electrode and a programming gate dielectric. The programming gate is spaced from the pass gate by a drain extension region of the LDMOS structure. The LDMOS structure provides protection for the pass gate when a programming voltage for rupturing the programming gate dielectric is applied to the programming gate electrode. A method for producing such an OTP device comprises forming a drain extension region, fabricating a pass gate over a first portion of the drain extension region, and fabricating a programming gate over a second portion of the drain extension region.Type: GrantFiled: July 18, 2013Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Akira Ito, Xiangdong Chen
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Patent number: 8934586Abstract: Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.Type: GrantFiled: June 30, 2011Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Ramon Alejandro Gomez, Bruce J. Currivan, Massimo Brandolini, Young Shin, Francesco Gatta, Hanli Zou, Loke Kun Tan, Lin He, Thomas Joseph Kolze, Leonard Dauphinee, Robindra Joshi, Binning Chen
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Patent number: 8934432Abstract: Certain aspects of a method and system for processing signals in a communication system may include maximizing system capacity for a time division duplex (TDD) multiple-input multiple-output (MIMO) system, based on reducing a search range within which to find a group of signals having maximum channel gain. At least one of: a first signal for a first user and a second signal for a second user may be selected, which are both within the reduced search range, and which provides a maximum system capacity. The first signal for the first user may be selected from the reduced search range corresponding to a channel gain that is greater than a channel gain corresponding to a remaining portion of the reduced search range. The reduced search range may be generated by sorting a plurality of signals based on a channel gain corresponding to each of the plurality of signals.Type: GrantFiled: September 12, 2012Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Jun Zheng, Chengjin Zhang, Pieter van Rooyen
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Patent number: 8934527Abstract: A method for providing a next-cycle input sample from a decision feedback equalizer to a symbol decoder using look-ahead computations such that timing contention between the decision feedback equalizer and the symbol decoder is reduced. During a symbol period, a set of possible values is computed in the decision feedback equalizer and a set of path memory symbols is computed in the symbol decoder, the set of path memory symbols being based on a current input sample. During the same symbol period, one of the possible values is selected as the next-cycle input sample based on at least one of the next-cycle path memory symbols produced from the symbol decoder.Type: GrantFiled: June 15, 2010Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Arthur Abnous, Avanindra Madisetti, Christian A. J. Lutkemeyer
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Patent number: 8934891Abstract: A system, method, and apparatus to facilitate the synchronization of oscillators between members of a Heterogeneous Network (HetNet) to form a self-synchronizing network (SSN). The network members are configured to broadcast information indicative of the reliability of their oscillator. Network members attempt to look for reliable sources such as those originating from a macrocell base station or GPS. If such a source is found, the member cell updates it clock accuracy confidence level number (CACL) to indicate this. Network members also share information regarding the frequency offsets between one another. Every cell member then applies a weighted average function to determine how to update its own oscillator and CACL value accordingly. Cell members can also update their functionality, such as RF power level, in response to varying degrees of CACL values. This operation results in a convergence of all cell members to the most accurate oscillator offset value.Type: GrantFiled: June 8, 2012Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventor: Rafael Carmon
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Patent number: 8935428Abstract: Techniques are provided for handling failures of DNS (domain name system) servers to respond to DNS queries. A DNS resolver is configured to resolve domain names, and includes a time-to-live (TTL)-based cache, a negative cache, and a long term store cache. The TTL-based cache is configured to temporarily store domain names with resolved IP addresses. The negative cache is configured to store negative entries that include information indicating domain names that were failed to be resolved. The long term store cache is configured to store domain names with resolved IP address for an indefinite time period. The caches are accessed in a manner that enables fewer DNS query retries to be performed when a DNS server is non-responsive, to reduce delays and network traffic. Furthermore, the DNS resolver may reduce a number of DNS queries performed the longer the DNS server stays non-responsive.Type: GrantFiled: October 29, 2009Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Sam Anderson, Dragan Djurovic, Eugene Nechamkin, Jamshid Shoghli
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Patent number: 8935550Abstract: A method and system to dynamically manager power in a communication system are provided herein. The method comprises the steps of monitoring a transmit data queue once every first pre-determined period of time and determining whether the transmit data queue is empty for a pre-determined number of times. The method further includes the step of generating a transition state signal to stop de-queuing of data from the transmit queue if the transmit data queue is empty for the pre-determined number of times and selectively operating portions of a Physical Layer (PHY) that are used for functions other than transmitting and receiving an idle signal in a low power mode.Type: GrantFiled: September 19, 2011Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Mehmet V. Tazebay, Bruce Conway, Santanu Sinha
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Publication number: 20150011238Abstract: Systems and methods for enabling accurate unilateral geolocation in a user equipment (UE) are provided. In one embodiment, the UE utilizes network attachments steps to determine an estimate of a propagation time difference between two base stations. The UE then estimates a transmit time difference between the two base stations using the estimate of the propagation time difference and Observed Time Difference of Arrival (OTDOA) assistance data received from the network. The UE computes its position based on the transmit time difference and OTDOA measurements. In another embodiment, the UE uses measurements from multiple receive antenna elements to measure an Angle Difference of Arrival (ADO) between multiple base stations and a reference base station, and computes its position based on the ADOA measurements.Type: ApplicationFiled: July 3, 2014Publication date: January 8, 2015Applicant: Broadcom CorporationInventor: Djordje TUJKOVIC