Patents Assigned to Broadcom
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Patent number: 9000969Abstract: A received plurality of signals may be filtered to select an in-band signal and/or an out-of-band. A signal strength of the selected signal(s) may be measured. A resolution of an analog-to-digital converter may be controlled based on the measured signal strength(s). The selected in-band signal may be converted to a digital representation via the analog-to-digital converter. The resolution may be decreased when the strength of the in-band signal is higher, and increased when the strength of the in-band signal is lower. The resolution may be increased when the strength of the out-of-band signal is higher, and decreased when the strength of the out-of-band signal is lower. A signal-to-noise ratio and/or dynamic range of the selected signal(s) may be determined based on the measured signal strength(s), and may be utilized to adjust the resolution of the analog-to-digital converter.Type: GrantFiled: October 25, 2012Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventor: Ahmadreza Rofougaran
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Patent number: 9001728Abstract: Various systems and methods are provided for transmission of related data components across independent streams. In one embodiment, among others, a transmitting device may separate transmission data into related data components and transmit each related data component in an associated transport stream. Each related data component includes a synchronization tag associated with synchronization of the related data component within the transmission data. In another embodiment, a receiving device may receive related data components transmitted in separate transport streams and decode the related data components based at least in part upon a synchronization tag included in each related data component.Type: GrantFiled: August 3, 2012Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Wade Wan, Rajesh Mamidwar, Xuemin Chen, Marcus Kellerman, Brett Tischler
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Patent number: 9000805Abstract: The present disclosure provides for a clock distribution network for distributing clocking signals within a synchronous sequential logic circuit. The clock distribution network distributes the one or more clock signals by inductively and/or capacitively coupling a clocking signal from a primary distribution node to various secondary distribution nodes within the synchronous sequential logic circuit. The various secondary distribution nodes resonate at respective resonant frequencies to generate other clocking signals for use within the synchronous sequential logic circuit in response to receiving the clocking signal.Type: GrantFiled: March 22, 2013Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: David Chang, Ajat Hukkoo
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Patent number: 9002300Abstract: Methods and systems for antenna switching for time division duplexing (TDD) in a 60 GHz distributed communication system are disclosed and may include enabling one or more antenna configurations in one or more remote RF modules within a wireless communication device based on a measured signal characteristic. The RF modules may receive IF signals generated from baseband signals via one or more coaxial lines. TDD RF signals may be communicated via the antenna configurations with devices external to the wireless communication device. The IF signals may be tapped in the coaxial lines at taps coupled to the RF modules. The baseband signals may include video, streamed Internet, and/or data from a local data source. The TDD RF signals may be transmitted to a display device. Control signals for the RF devices may be communicated utilizing the coaxial lines.Type: GrantFiled: September 30, 2010Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Ahmadreza Rofougaran, Maryam Rofougaran
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Method and system for explicit feedback with sounding packet for wireless local area networks (WLAN)
Patent number: 9002294Abstract: Aspects of a method and system for explicit feedback with a sounding packet for wireless local area networks (WLAN). Aspects of the system may include a beamforming block that may enable generation of a plurality of RF chain signals based on a current steering matrix, where the current steering matrix may be a non-identity matrix. A processor may enable transmission of a request for feedback information via the plurality of RF chain signals. The request may contain medium access control (MAC) layer protocol data unit (PDU) data and channel sounding information, which may be encapsulated in a physical (PHY) layer PDU.Type: GrantFiled: December 18, 2013Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventor: Joonsuk Kim -
Patent number: 9003121Abstract: A multi-ported memory that supports multiple read and write accesses is described herein. The multi-ported memory may include a number of read/write ports that is greater than the number of read/write ports of each memory bank of the multi-ported memory. The multi-ported memory allows for at least one read operation and at least one write operation to be received during the same clock cycle. In the event that an incoming write operation is blocked by the at least one read operation, data for that incoming write operation may be stored in a cache included in the multi-port memory. That cache is accessible to both write operations and read operations. In the event than the incoming write operation is not blocked by the at least one read operation, data for that incoming write operation is stored in the memory bank targeted by that incoming write operation.Type: GrantFiled: October 19, 2012Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Weihuang Wang, Chien-Hsien Wu
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Patent number: 9001822Abstract: Aspects of a method and system for utilizing a 10/100/1G/10GBase-T PHY device for single channel and shared channel networks are provided. In this regard, at least one switching element may be utilized to configure an Ethernet over twisted pair PHY device for communication over a single and/or shared channel. The switching element may enable switching between a transmitter being coupled to a shared channel and a receiver being coupled to a shared channel. Additionally, the switching elements may be based on whether the transmitter is connected to a standard 10/100/1G/10GBase-T network, or to a single and/or shared channel network, for example. In this manner, the configured PHY device may remain compatible with existing Ethernet networks. The PHY device may be configured externally and/or internally. The polarity of transmitted and/or received data may be configured based on a polarity of data received from a shared channel.Type: GrantFiled: November 15, 2011Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Scott Powell, Mark Berman, Joseph Laurence Cordaro, Manolito Catalasan
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Publication number: 20150092680Abstract: A technique to provide receiver processing of a plurality of component carrier signals that are received from one or more transmitting source by a terminal device, in which filtered component carrier signals are processed and aggregated in the terminal device. Two of the component carrier signals may be in a same frequency band grouping or two or more of the component carrier signals may be in a different band grouping. The receiver architecture allows for flexible processing of the component carrier signals by allocating the different bands into frequency band groupings to process the plurality of component carrier signals.Type: ApplicationFiled: November 22, 2013Publication date: April 2, 2015Applicant: Broadcom CorporationInventors: Masoud Kahrizi, Bernd Pregardier
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Publication number: 20150092622Abstract: A circulator based transceiver sharing a common antenna between a receive signal path and a transmit signal path is disclosed. Techniques to reduce coupled transmit signals and coupled transmit noise in a receive signal path, implemented in a variety of embodiments is disclosed allowing elimination of a diplexer, simplification of circulator design and reduction of transceiver cost. The transceiver includes means to generate and couple a correction signal into the receive signal path to attenuate coupled transmit signal in the receive path. Furthermore, the transceiver includes echo cancellation techniques to attenuate transmit noise in the receive signal path. Methods to utilize the transceiver to attenuate coupled transmit signal and transmit noise may improve transceiver efficiency, for example, in demodulation techniques and processing of data signal.Type: ApplicationFiled: September 30, 2013Publication date: April 2, 2015Applicant: Broadcom CorporationInventors: Yaacov STURKOVICH, Igal Yahuda Kushnir, Ronen Shaked
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Publication number: 20150092540Abstract: Embodiments of the disclosure generally relate to a system and method for traffic offload from a first access technology to a second access technology. For example, packets originally destined for transmission over a bearer channel associated with Long Term Evaluation (LTE) can be offloaded to a Wi-FI bearer channel in a seamless manner when available, or a non-seamless manner.Type: ApplicationFiled: September 30, 2013Publication date: April 2, 2015Applicant: Broadcom CorporationInventors: Amit CHOUDHARY, Arzad Kherani
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Publication number: 20150094117Abstract: A transceiver or RF front end employing a transformer with a low loss transmit/receive (T/R) switch circuit in the ground path. In various embodiments, differential outputs of a power amplifier are coupled to the first winding of the transformer, while the input of a low noise amplifier is coupled to the second side of the transformer via a matching inductor. The T/R switch circuit, which may be a thin oxide CMOS transistor, is coupled between the second side of the transformer and ground. In operation, the T/R switch circuit may be enabled during transmit mode operations of the power amplifier, such that a low impedance path to ground is provided at the input of the low noise amplifier, thereby protecting it from high voltage swings generated by the power amplifier.Type: ApplicationFiled: December 31, 2013Publication date: April 2, 2015Applicant: BROADCOM CORPORATIONInventors: Matteo Conta, Seema Butala Anand
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Publication number: 20150094868Abstract: An industrial process environment uses selective power-over-network (PoN) techniques to facilitate configuration, operation, communication, and other operations for the industrial nodes in the environment. The network may be an Ethernet network, and the environment may selectively deliver power-over-Ethernet as well as command, configuration, or other data over the network connection. The environment may perform the techniques over other types of networks or combinations of networks in addition to or instead of Ethernet networks.Type: ApplicationFiled: February 13, 2014Publication date: April 2, 2015Applicant: Broadcom CorporationInventors: Wael William Diab, Yasantha Rajakarunanayake, Patricia Ann Thaler
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Publication number: 20150093996Abstract: A wireless network includes a plurality of small cells. The small cells each register with the network, and an application server tracks the locations of the small cells within the network. Upon entry to the network, the small cell registers with various event packages managed by the application server. When a small cell in the network updates its configurations and/or parameters, the small cell publishes those changes to the application server. The application server determines other nearby small cells that are “interested” in those changes based on their proximity to the changed cell. The application server then notifies those proximate cells of the changes made to the changed cell so that the proximate cells can update their own configurations.Type: ApplicationFiled: September 27, 2013Publication date: April 2, 2015Applicant: Broadcom CorporationInventors: Kaveh GHABOOSI, Manish Vemulapalli, Jim Oates, Yuqiang Tang
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Publication number: 20150092770Abstract: A device for emulating circuit switching in Ethernet using an Ethernet circuit header (ECH) includes a node of a network that is configured to receive a packet. A control module may be configured to determine that a destination address portion of a data frame associated with the packet matches a predefined format. A parser module may be configured to parse an ECH portion of the destination address to identify a circuit-identification (ID). A look-up module may be configured to look up the circuit ID in a circuit-ID table using at least one of a plurality of key options to generate a look-up-result data. The control module may be configured to use the look-up-result data to direct the packet to a destination interface of a destination node.Type: ApplicationFiled: October 21, 2013Publication date: April 2, 2015Applicant: Broadcom CorporationInventors: Vivek Kumar, Santhoshkumar Chandrasekar
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Publication number: 20150093997Abstract: A method of determining at a receiver whether a received signal comprises a pure tone signal component. The method comprises: measuring a received signal over a measurement period; calculating, using maximum likelihood hypothesis testing, a likelihood ratio value for the measured signal and, determining, based on said likelihood ratio value, whether the measured signal comprises a pure tone signal component. The likelihood ratio value is a value indicative of the ratio of a likelihood LFSC that the measured signal comprises a pure tone signal component, and a likelihood LnoFSC that the measured signal does not comprise the pure tone signal component.Type: ApplicationFiled: September 30, 2013Publication date: April 2, 2015Applicant: Broadcom CorporationInventors: Morten R. HANSEN, Lars P. B. CHRISTENSEN
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Publication number: 20150095479Abstract: A device includes a network interface, memory, and logic in data communication with the network interface and memory. The memory is configured to store instructions. When executed by the logic, the instructions are configured to: determine topology information for a node of a network, determine a desired security level for the node based on the topology information, determine a function for the node, determine a security feature to implement the desired security level based on the function, and implement the security feature on the node.Type: ApplicationFiled: February 12, 2014Publication date: April 2, 2015Applicant: Broadcom CorporationInventors: Xuemin Chen, Wael William Diab, Yongbum Kim, Mohan Venkatachar Kalkunte
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Publication number: 20150092040Abstract: A system includes an imager, such as a 3-D structured light imaging system, and gesture logic in data communication with the imager. The imager is configured to create an image of the motion of a mobile subject. The gesture logic is configured to: generate a first mapping of the current motion of the mobile subject based on the image, access a stored second mapping of a model gesture, and compare the first mapping to the second mapping to determine a operational condition of the mobile subject.Type: ApplicationFiled: February 13, 2014Publication date: April 2, 2015Applicant: Broadcom CorporationInventors: Xuemin Chen, Yongbum Kim
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Publication number: 20150095726Abstract: A communication device operates to support communications with one or more other communication devices. The communication device includes a processor and a communication interface to perform various operations including receiving forward error correction (FEC) coded signals from another communication device. The communication device iteratively decodes the FEC coded signals to make estimates of information encoded therein. The communication device then determines an operational error check rate based on error check failure of at least one of the FEC coded signals after performing a predetermined number of decoding iterations (e.g., that is less than a maximum number of decoding iterations performed by the device). The device then determines a signal to noise ratio (SNR) margin of the communication device by applying the operational error check rate to a characterization of the communication device that relates error check rate and SNR.Type: ApplicationFiled: September 29, 2014Publication date: April 2, 2015Applicant: BROADCOM CORPORATIONInventors: Kelly Brian Cameron, Hau Thien Tran, Tak Kwan Lee, Ba-Zhong Shen, Bruce Joseph Currivan
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Publication number: 20150092587Abstract: A new protocol uses a trigger message to identify one or more symbols transmitted between a first and a second communication device. The first device generates and transmits a trigger message to the second device. This process may be initiated based on the first device receiving a measurement initiation message from another device (e.g., such as the second device or another device within the system). Then, the first device transmits a signal that includes those one or more symbols to the second device. Before or during transmission, the first device generates a first capture of those one or more symbols. After receipt of the transmission from the first device, the second device performs a second capture of those one or more symbols identified within the trigger message. Then, any device having the first and second captures can determine a characterization of the communication pathway between the first and second devices.Type: ApplicationFiled: September 30, 2014Publication date: April 2, 2015Applicant: BROADCOM CORPORATIONInventors: Bruce Joseph Currivan, Roger Wayne Fish, Lisa Voigt Denney, Niki Roberta Pantelias
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Publication number: 20150092669Abstract: In a heterogeneous network environment where both high and low power nodes are sharing the same channel/frequency, explicit signaling in a downlink control message is used to select whether scheduling information SI is to be transmitted by a user equipment UE with a data payload or without a data payload. For the case where the selection is that SI is to be transmitted with a data payload, the downlink control message is used for the UE to select a transport format combination TFC for transmission of the SI with the data payload. Else for the case where the selection is that SI is to be transmitted without a data payload, the downlink control message is used for the UE to select transmit power for the transmission of the SI without the data payload.Type: ApplicationFiled: September 27, 2013Publication date: April 2, 2015Applicant: Broadcom CorporationInventors: Tao CHEN, Arto Johannes LEHTI, Karl Marko Juhani LAMPINEN, Christopher CALLENDER, Ilmari REPO