Patents Assigned to Broadcom
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Patent number: 8112098Abstract: A configuration device for configuring a wireless device within a wireless cell can include a receiving unit configured to receive a request message from a wireless device within a wireless cell. In addition, the configuration device can include a first processing unit configured to determine location information of the wireless device, and a second processing unit configured to determine a communication capacity of the wireless device, and to estimate a communication requirement based on the request message. Furthermore, the configuration device can have a transmitting unit configured to transmit optimal information to the wireless device with respect to the request message.Type: GrantFiled: September 7, 2010Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventor: Jeyhan Karaoguz
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Patent number: 8111042Abstract: A power delivery system wirelessly deliver electric power and a communication signal to a target device. The power delivery system includes a power transmitting unit having a power source operable to source alternating current power and a sending resonant coupling component operable to couple the alternating current power to a coil for wireless power transmission by a non-radiated magnetic field at a target resonant frequency. The power transmitting unit is capable of dynamically tuning the wireless power transmission to the target resonant frequency wherein the target resonant frequency is specified dynamically. A communication module couples to the power transmitting unit and is operable to couple the communication signal to the non-radiated magnetic field. Operations may include target device authentication, target resonant frequency information communication, billing, and device management.Type: GrantFiled: September 30, 2008Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventor: James D. Bennett
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Patent number: 8111189Abstract: A global navigation satellite system (GNSS) enabled mobile device comprising a crystal oscillator and an automatic frequency correction (AFC) circuit may be operable to share the crystal oscillator between processing of cellular radio signals and processing of GNSS data messages. The GNSS enabled mobile device may be operable to enforce an AFC correction when the crystal oscillator drifts beyond a specific frequency error. The AFC correction may be allowed during time intervals corresponding to GNSS words at which decoding of these words is not required. The GNSS enabled mobile device may be operable to disable the AFC correction during time intervals associated with decoding of words while the crystal oscillator may drift within the specific frequency error range. After the decoding of one or more of words is completed, the AFC correction may be allowed during the time intervals corresponding to these words.Type: GrantFiled: December 31, 2009Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventors: Charles Abraham, John Walley
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Patent number: 8112074Abstract: A wireless access point selects its own transmission power for different types of the transmissions. The access point transmits to client devices at reduced power levels, however, periodic beacons and other selected non-beacon transmissions can be transmitted at a high power level to facilitate association by other client devices.Type: GrantFiled: December 10, 2009Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventor: James D. Bennett
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Patent number: 8111617Abstract: A system and method for utilizing multiple independent communication pathways for communication. Various aspects of the present invention may comprise receiving a first signal directly from a first communication network, where the first signal communicates a unit of information. A second signal may be received from a second communication network, where the second signal communicates the unit of information. The received first and second signals may be processed to determine the unit of information. For example, respective indications of reliability may be determined and utilized to select between the units of information determined from the first and second signals. Also for example, such indications of reliability may be utilized to calculate the unit of information (e.g., based on a weighted averaging technique). Also for example, the unit of information determined from the first signal may be utilized to determine the unit of information from the second signal.Type: GrantFiled: March 29, 2005Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventors: Jeyhan Karaoguz, Nambirajan Seshadri, James D. Bennett
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Patent number: 8112044Abstract: A transceiver is provided for wireless communication. The transceiver can include a bias source, a transformer including a primary side and a secondary side, and a switching device. During a receive mode, the primary side of the transformer is configured to receive a first signal from a first port. During a transmission mode, the primary side is configured to transmit a second signal from a second port. The switching device is configured to couple the first port to the bias source during transmission of the second signal and to couple the second port to the bias source during receipt of the first signal. The bias source can be, for example, ground.Type: GrantFiled: January 4, 2011Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventors: Bojko F. Marholev, Jesus A. Castaneda
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Patent number: 8112045Abstract: A Radio Frequency RF transmitter includes a translational loop architecture that supports non-constant envelope modulation types and includes by adjusting the envelope of the translational loop at the translational loop output. The RF transmitter includes an Intermediate Frequency (IF) modulator, a translational loop, an envelope time delay adjust block, an envelope adjust block, and a time delay calibration block. The IF modulator receives a modulated baseband signal and produces a modulated IF signal having a non-constant envelope. The translational loop receives the modulated IF signal and produces a modulated RF signal having a constant envelope. The envelope time delay adjust block receives an envelope signal corresponding to the original modulated signal and produces a time delayed envelope signal based upon a time delay control signal. The envelope adjust block adjusts the modulated RF signal based upon the time delayed envelope signal to produce an envelope adjusted modulated RF signal.Type: GrantFiled: December 17, 2008Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventors: Hong Shi, Henrik T. Jensen
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Patent number: 8112053Abstract: A wireless device includes at least one antenna, a plurality of shared signal path components coupled to the at least one antenna, the plurality of shared signal path components including a shared adjustable gain element, e.g., Low Noise Amplifier (LNA), Power Amplifier (PA), etc., a first wireless interface, e.g. Wireless Local Area Network interface coupled to the plurality of shared signal path components, and a second wireless interface, e.g., Wireless Personal Area Network interface, coupled to the plurality of shared signal path components. During a first operational period, the first wireless interface controls gain of the shared adjustable gain element and during a second operational period that differs from the first operational period, the second wireless network interface controls gain of the shared adjustable gain element. With another embodiment the first wireless interface and/or the second wireless interface each includes shared adjustable gain elements for transmit and receive diversity.Type: GrantFiled: May 22, 2007Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventors: Prasanna Desai, Mark Gonikberg, Brima B. Ibrahim, Luis Gutierrez, Sreenivas Karanam, Thomas Varghese
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Patent number: 8111789Abstract: 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: June 30, 2005Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventors: Mark Kent, Vinko Erceg, Uri M. Landau, Pieter Van Rooyen
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Patent number: 8111183Abstract: Systems and methods for digital upconversion of digital signals are provided. In one embodiment, the system includes a digital frequency adjustment system and a digital to analog conversion system. In a feature of the embodiment, the digital frequency adjustment system consists of set of digital upconversion and upsample elements that shift upwards the frequency of baseband signals. In a further feature of the embodiment, a tree structure of sets of upsample and upconversion elements is used. In another embodiment, the system includes digital and analog frequency adjustment systems in which the frequencies of the input signals are partially upshifted within both the digital and analog domains. Methods for digital upconversion of digital signals are also provided.Type: GrantFiled: August 2, 2010Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventors: Ramon A. Gomez, Donald McMullin
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Publication number: 20120027018Abstract: A method of integrating virtual and physical network switching components into a heterogeneous switching domain is provided. Such method including, attaching, by a switching device, a header to a packet received from a virtual machine, the header including domain information, and processing the packet by the switching device, the processing being controlled by the header. Finally, the packet is forwarded, the forwarding being controlled by the header.Type: ApplicationFiled: August 31, 2010Publication date: February 2, 2012Applicant: Broadcom CorporationInventor: Nicholas Ilyadis
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Publication number: 20120026133Abstract: An antenna includes an antenna section and a ground plane. The ground plane includes a plurality of inductors that provide a high impedance at the operating frequency of the antenna. The plurality of inductors are implemented via a plurality of inductive elements of an inductive touch screen.Type: ApplicationFiled: October 10, 2011Publication date: February 2, 2012Applicant: BROADCOM CORPORATIONInventor: Ahmadreza Reza Rofougaran
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Publication number: 20120027074Abstract: Embodiments of a summer block for a Decision Feedback Equalizer are provided herein. The summer block is configured to offset a combination of a Feed Forward Equalized (FFE) data signal and a Feedback Equalized (FBE) data signal by a dc amount. The dc amount is based on at least a weight of a tap previously implemented with an FBE of the DFE. The summer block can be further configured to offset the combination of the FFE data signal and the FBE data signal based on a dc offset value necessary to compensate for asymmetries in the data eye of data received by the FFE over a channel and a dc offset value necessary to compensate for mismatches present in the circuits of the DFE.Type: ApplicationFiled: September 9, 2010Publication date: February 2, 2012Applicant: Broadcom CorporationInventors: Bharath RAGHAVAN, Afshin Momtaz, Jun Cao
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Publication number: 20120028677Abstract: A device includes a gyrating circuit that generates a motion parameter based on motion of the device. An RF transceiver generates an outbound RF signal from an outbound symbol stream, transmits the outbound RF signal to a remote station of a wireless network, and generates an inbound symbol stream from an inbound RF signal received from the at least one remote station. A processing module processes the motion parameter to produce motion data, converts outbound data into the outbound symbol stream, converts the inbound symbol stream into inbound data, compares current motion data to past motion data, detects when a difference between the current motion data and the past motion data compares unfavorably to a motion change threshold, and include the motion data in the outbound data when the difference between the current motion data and the past motion data compares unfavorably to the motion change threshold.Type: ApplicationFiled: October 12, 2011Publication date: February 2, 2012Applicant: BROADCOM CORPORATIONInventor: Ahmadreza (Reza) Rofougaran
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Publication number: 20120030451Abstract: An Parallel and Long Adaptive Instruction Set Architecture (PALADIN) is provided to optimize packet processing. The Instruction Set Architecture (ISA) includes instructions such as aggregate comparison, comparison OR, comparison AND and bitwise instructions. The ISA also includes dedicated packet processing instructions such as hash, predicate, select, checksum and time to live adjust, move header left, post, move header left/right and load/store header/status.Type: ApplicationFiled: August 13, 2010Publication date: February 2, 2012Applicant: Broadcom CorporationInventors: Fong PONG, Kwong-Tak CHUI, Chun NING, Patrick LAU
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Publication number: 20120030320Abstract: A system for managing energy efficiency and control mechanisms in a computer network having a plurality of network components is provided. The system includes a network power manager (NPM) coupled to at least one of the plurality of network components. The NPM is configured to receive and analyze power information from at least one of the plurality of the network components. The NPM is further configured to generate configuration instructions based on the analyzing of the power information and send the configuration instructions to at least one of the network components.Type: ApplicationFiled: June 30, 2011Publication date: February 2, 2012Applicant: Broadcom CorporationInventors: Wael William DIAB, Nicholas ILYADIS, Rick Weidong LI
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Publication number: 20120025910Abstract: Disclosed is a switching amplifier having an enhanced supply rejection. The switching amplifier comprises a digital modulator that provides a modulated signal. The switching amplifier further comprises a closed-loop analog driver that is coupled to the digital modulator. As disclosed, the closed-loop analog driver is configured to re-modulate a modulation signal that corresponds to the modulated signal. An output stage of the switching amplifier is driven by the re-modulated signal, thereby providing enhanced supply rejection. In one embodiment, the modulated signal is produced by a digital pulse-width modulator (PWM) circuit of a Class-D amplifier, and has a pulse rate substantially less than a clock rate of the digital PWM circuit. In one embodiment, the switching amplifier is implemented as an audio amplifier in a mobile communication device such as a cellular telephone.Type: ApplicationFiled: July 29, 2010Publication date: February 2, 2012Applicant: BROADCOM CORPORATIONInventors: Xicheng Jiang, Jungwoo Song, Minsheng Wang, Todd L. Brooks
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Patent number: 8107489Abstract: A baseband processing module for use within a Radio Frequency (RF) transceiver includes a downlink/uplink interface, TX processing components, a processor, memory, RX processing components, and a turbo decoding module. The RX processing components receive a baseband RX signal from the RF front end, produce a set of IR samples from the baseband RX signal, and transfer the set of IR samples to the memory. The turbo decoding module receives at least one set of IR samples from the memory, forms a turbo code word from the at least one set of IR samples, turbo decodes the turbo code word to produce inbound data, and outputs the inbound data to the downlink/uplink interface. The turbo decoding module performs metric normalization based upon a chosen metric performs error detection operations, and extracts information from a MAC packet that it produces.Type: GrantFiled: March 30, 2009Date of Patent: January 31, 2012Assignee: Broadcom CorporationInventors: Jie Lai, Mark David Hahm
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Patent number: 8108699Abstract: A system and method for power over Ethernet (PoE) configuration for a power sourcing equipment using a network profile. Various types of PSE profile information can be stored in a network database. Upon startup or other configuration setting state, a PSE can retrieve the profile information from the network database and configure its operation based upon such retrieval. Remote configuration of the PSE is thereby enabled.Type: GrantFiled: September 30, 2008Date of Patent: January 31, 2012Assignee: Broadcom CorporationInventor: Wael William Diab
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Patent number: RE43160Abstract: A high-speed differential signaling logic gate includes a 1st input transistor, 2nd input transistor, complimentary transistor, current source, a 1st load, and a 2nd load. The 1st input transistor is operably coupled to receive a 1st input logic signal, which may be one phase of a first differential input signal. The 2nd input transistor is coupled in parallel with the 1st input transistor and is further coupled to receive a 2nd input logic signal, which may be one phase of a 2nd differential input signal. The complimentary transistor is operably coupled to the sources of the 1st and 2nd input transistors and to receive a complimentary input signal, which mimics the other phase of the 1st differential logic signal and the 2nd differential logic signal. The current source sinks a fixed current from the 1st and 2nd input transistors and the complimentary transistor. The 1st load is operably coupled to the drains of the 1st and 2nd input transistors to provide a 1st phase of a differential logic output.Type: GrantFiled: February 5, 2008Date of Patent: February 7, 2012Assignee: Broadcom CorporationInventor: Tsung-Hsien Lin