Patents Assigned to Broadcom Corporations
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Patent number: 8600314Abstract: System and method for active scanning of wireless channels is described. An example method may include transmitting, by a first wireless device, a request to enter a sleep mode and a sleep mode schedule to a second wireless device, the sleep mode schedule specifying a sleep period for the first wireless device going to sleep, and scanning one or more wireless channels, by the first wireless device after transmitting the sleep mode schedule and during the sleep period, to find a third wireless device for communication with the first wireless device. The method may also include communicating, by the first wireless device, during the sleep period, with the third wireless device. Such a scan may be a passive scan or an active scan.Type: GrantFiled: October 12, 2011Date of Patent: December 3, 2013Assignee: Broadcom CorporationInventor: Rajesh Kumar Sinha
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Patent number: 8599830Abstract: Network Interface Controller (NIC) logic may receive a packet comprising a routing parameter indicating a service or cost to be utilized in processing the packet. The NIC logic may determine a selected virtual machine (VM) running on a network device to process the packet according to the routing parameter. The NIC logic may communicate the packet across a network after the packet has been processed by the selected virtual VM. Or, the NIC logic may initialize a VM in the network device to process the packet according to the routing parameter. The NIC logic may receive multiple packets and determine a second selected VM or initialize a second VM to process the multiple packets according to the respective routing parameters of the multiple packets. The routing parameters may indicate device capabilities, service class, quality measurements, latency, power usage or any combination thereof.Type: GrantFiled: July 17, 2012Date of Patent: December 3, 2013Assignee: Broadcom CorporationInventors: Jeyhan Karaoguz, Bruce Currivan, Wael William Diab, Yongbum Kim, Kenneth Ma, Michael Johas Teener
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Patent number: 8600305Abstract: Aspects of a method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer are presented. Aspects of the system may include at least one circuit that enables generation of an output signal in response to one or more generated input signals. A feedback signal may be generated within a single feedback mixer circuit that may perform a frequency mix-down operation on the generated output signal. The generated feedback signal may be inserted at one or more insertion points in a receiver. Each of the insertion points may be located between a mixer stage of the receiver, and one or more circuits that generate a baseband signal based on the generated feedback signal.Type: GrantFiled: May 23, 2012Date of Patent: December 3, 2013Assignee: Broadcom CorporationInventors: Arya Behzad, Ali Afashi, Vikram Magoon
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Patent number: 8600315Abstract: Methods and systems for a configurable front end are disclosed. Aspects of one method may include a transceiver on a single chip that may comprise a power amplifier (PA) and a low noise amplifier (LNA). The PA may amplify signals to be transmitted over a range of output transmit power. An upper limit for a power range may of substantially 12 dBm. The LNA may be tolerant to PA signals by, for example, being configured to follow signal voltages generated from an output of the power amplifier. For example, each input transistor of the LNA may be isolated from other transistors in the LNA. Accordingly, the input transistors may float since they may not be tied to a voltage level via other transistors. This may allow the input transistors to avoid damage. The transceiver may also be configured for differential RF input, differential RF output, single-ended RF input, and/or single-ended RF output.Type: GrantFiled: May 29, 2007Date of Patent: December 3, 2013Assignee: Broadcom CorporationInventors: Razieh Roufoogaran, Iqbal Bhatti
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Patent number: 8600427Abstract: A host device may be enabled to support a plurality of wireless interfaces, wherein some of these interfaces may be utilized to support human interface device (HID) based communication. The host device may be enabled to monitor activity of HID devices based on communications via HID capable wireless interfaces, may predict future use of the HID devices based on the monitoring, and may manage sniff communication that is utilized to track and/or detect activities in the HID devices. The management of the sniff communication may comprise adjusting characteristics of the sniff communication to enable improving throughput of other wireless interfaces available via the host device that may be affected by the sniff communication. The adjustment of the characteristics of sniff communication may comprise adjusting, statically and/or dynamically, length of sniff intervals and/or designating of sniff packets as high priority requests.Type: GrantFiled: June 18, 2012Date of Patent: December 3, 2013Assignee: Broadcom CorporationInventors: Brima Ibrahim, Prasanna Desai
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Publication number: 20130316764Abstract: A frequency control system enhances user equipment performance. The user equipment may include multiple SIMs, and the frequency control system may facilitate successful background page monitoring for a SIM that is not currently active. In particular, the frequency control system may track environmental factors that influence time base accuracy in the user equipment. When the background page monitoring activity happens for the inactive SIM, the frequency control system may apply a correction to the time base that facilitates successful reception of the paging indicators for the inactive SIM.Type: ApplicationFiled: May 24, 2012Publication date: November 28, 2013Applicant: Broadcom CorporationInventors: Rami Mehio, Jin-Sheng Su
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Publication number: 20130316760Abstract: A wireless communication device includes a front-end module (FEM) network, an RF connection, and a system on a chip (SOC). A first set of FEMs is operable to output, via an antenna, a first outbound RF signal to a first wireless communication device and receive a first inbound RF signal via an antenna. A second set of FEMs is operable to output, via an antenna, a second outbound RF signal to a second wireless communication device, wherein the second outbound RF signal is representative of the first inbound RF signal, and receive a second inbound RF signal via an antenna, wherein the first outbound RF signal is representative of the second inbound RF signal. The SOC is operable to activate the first and second sets of FEMs, facilitate the first outbound RF signal representing the second inbound RF signal, and facilitate the second outbound RF signal representing the first inbound RF signal.Type: ApplicationFiled: July 31, 2013Publication date: November 28, 2013Applicant: BROADCOM CORPORATIONInventors: Hooman Darabi, Ahmadreza Rofougaran
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Publication number: 20130316702Abstract: Aspects of a method and system for timely delivery of multimedia content via a femtocell are provided. In this regard, a femtocell may receive data via an upstream path and transmit data via a downstream path. One of the upstream path and downstream path may comprise a cellular path and the other may comprise a non-cellular path. One or both of the upstream path and the downstream path may be audio video bridging (AVB) paths. Data may be stored in the femtocell based on timing characteristics of one or both of the upstream path and the downstream path. Data may be delivered to the femtocell utilizing best effort delivery and the data may be forwarded by the femtocell with guaranteed quality of service. Resources in the femtocell may be reserved and/or synchronized, utilizing AVB protocols, for communication of one or more data streams.Type: ApplicationFiled: May 13, 2013Publication date: November 28, 2013Applicant: Broadcom CorporationInventors: Wael William DIAB, Charles ABRAHAM, Xuemin Sherman CHEN, Vinko ERCEG, Victor T. HOU, Jeyhan KARAOGUZ, Mark KENT
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Publication number: 20130315169Abstract: Selective processing of one or more packets to be transmitted from a wireless communication device to another wireless communication device is effective to reduce the peak to average power ratio (PAPR) of the transmission. The one or more packets are transmitted via two or more sub-bands of an available transmission medium. The number of coefficients or factors within that sequence corresponds to the number of sub-bands via which the one or more packets are to be transmitted. Also, a phase ramp or time-domain cyclic shift may be added to one or more of the packets after having undergone multiplication by one of the coefficients or factors within the sequence.Type: ApplicationFiled: July 30, 2013Publication date: November 28, 2013Applicant: BROADCOM CORPORATIONInventors: Ron Porat, Jun Zheng
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Publication number: 20130314120Abstract: An integrated circuit includes a monitoring circuit and a monitored circuit connected with the monitoring circuit. The monitoring circuit is operable to determine during fabrication if a resistance of a connection between an in-fab redistribution layer connector and a post-fab redistribution layer connector exceeds a threshold.Type: ApplicationFiled: May 22, 2012Publication date: November 28, 2013Applicant: Broadcom CorporationInventors: Kunzhong Hu, Chonghua Zhong, Edward Law
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Publication number: 20130315238Abstract: A method and apparatus for extending multipoint control protocols to mixed media access systems. A medium-to-medium adaptor can be provided in an adaptor node that can interface with an upstream optical line terminal in a PON domain and a downstream device in a non-PON domain. The medium-to-medium adaptor enables an implementation of end-to-end services across multiple quality of service (QoS) domains by passing all traffic with controlled delay and without contention.Type: ApplicationFiled: June 13, 2012Publication date: November 28, 2013Applicant: Broadcom CorporationInventors: Lowell Lamb, Glen Kramer, Ryan Hirth, Edward Boyd
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Publication number: 20130315310Abstract: Presented herein is a system and method for reducing the total size of the frame buffer portion of a decoding circuit. The reduction in size is possible because first portions of B-pictures are displayed while second portions occurring later in the raster order are decoded. The foregoing allows the second portions occurring later in the raster order to overwrite third portions of the picture that have already been displayed. As a result, the frame buffer for providing the frame from a decoder to the display engine need only store the portion that is being displayed and the portion that is being decoded.Type: ApplicationFiled: May 9, 2013Publication date: November 28, 2013Applicant: Broadcom CorporationInventor: Broadcom Corporation
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Publication number: 20130314261Abstract: A method and apparatus is disclosed to compensate for impairments within a data converter such that its output is a more accurate representation of its input. The data converter includes a main data converter, a reference data converter, and a correction module. The main data converter may be characterized as having the impairments. As a result, the output of the main data converter is not the most accurate representation of its input. The reference data converter is designed such that the impairments are not present. The correction module estimates the impairments present within the main data converter using its output and the reference data converter to generate corrections coefficients. The correction module adjusts the output of the main data converter using the corrections coefficients to improve the performance of the data converter.Type: ApplicationFiled: April 22, 2013Publication date: November 28, 2013Applicant: Broadcom CorporationInventors: Ramon GOMEZ, Loke TAN, Bruce CURRIVAN, Steven JAFFE, Thomas KOLZE, Lin HE
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Publication number: 20130315593Abstract: A system and method for applying an extended multipoint control protocols to wireless access systems. A medium-to-medium adaptor can be provided in an adaptor node that can interface with an upstream optical line terminal in a PON domain and a downstream device in a non-PON wireless domain. The medium-to-medium adaptor enables an implementation of end-to-end services across multiple quality of service (QoS) domains by passing all traffic with controlled delay and without contention.Type: ApplicationFiled: June 13, 2012Publication date: November 28, 2013Applicant: BROADCOM CORPORATIONInventors: Lowell Lamb, Glen Kramer, Ryan Hirth, Edward Boyd
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Publication number: 20130315144Abstract: A system and method supporting access to multimedia information based upon user-defined quality of service criteria is disclosed. A broadband access gateway may coordinate network behavior during the transition of an access device among communication pathways having different available capacities. Adjustments in bit rates and levels of compression may be made based upon the user-defined quality of service criteria. The user may be notified when network conditions disallow support for the desired quality of service, and may choose to override selected criteria. The user-defined quality of service criteria may be stored within the gateway and associated with a user, or may be located in the access device and accessible to the gateway.Type: ApplicationFiled: July 30, 2013Publication date: November 28, 2013Applicant: Broadcom CorporationInventors: Jeyhan Karaoguz, Marc Abrams, Nambirajan Seshadri
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Publication number: 20130316648Abstract: A wireless communication device is provided with separate processing modules for a transceiver and a near field communication (NFC) device. The NFC processing module is configured to generate outbound NFC data and to process inbound NFC data, while the transceiver processing module is configured to generate outbound transceiver data and to process inbound transceiver data. A shared radio frequency (RF) front end transmits and receives combined radio frequency (RF) signals including both NFC data and transceiver data.Type: ApplicationFiled: July 30, 2013Publication date: November 28, 2013Applicant: BROADCOM CORPORATIONInventors: Ahmadreza (Reza) Rofougaran, Kambiz Shoarinejad
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Publication number: 20130315296Abstract: Various embodiments for facilitating the adaptive selection of encoding tools in a video processing device. One embodiment, among others, is a method implemented in a video processing device for adaptively selecting video encoding tools. The method comprises receiving video data comprising a plurality of frames, determining a real-time available bandwidth associated with a dynamic random access memory (DRAM), and generating a feedback signal based on the determined real-time available bandwidth. An encoding resource is selected for processing at least a portion of the plurality of frames based on the feedback signal.Type: ApplicationFiled: May 22, 2012Publication date: November 28, 2013Applicant: BROADCOM CORPORATIONInventor: Lei Zhang
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Publication number: 20130314108Abstract: A voltage measurement circuit is operative to measure a high voltage AC signal and includes a capacitive divider circuit and a compensator circuit. The capacitive divider circuit includes first and second inputs, across which, in use, is received a high voltage AC signal and also includes second and third capacitors. First and second plates of each of the first, second and third capacitors are defined by conductive layers of a printed circuit board and the dielectric of each of the first, second and third capacitors being defined by a non-conducting part of the printed circuit board. A compensator circuit has a configurable transfer function and includes an input connected across the first and second plates of the third capacitor and an output. The compensator circuit is operative to change a voltage received at its input in accordance with the transfer function and to provide the changed voltage at its output.Type: ApplicationFiled: July 23, 2013Publication date: November 28, 2013Applicant: BROADCOM CORPORATIONInventors: Iain Barnett, William Michael James Holland, Jonathan Ephraim David Hurwitz
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Publication number: 20130315357Abstract: Aspects of a method and system for interference cancellation substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims. In this regard, a receiver may be operable to receive a differential signal via a differential channel, and to sense a common mode signal on the differential channel. A frequency range in which interference is present in the common mode signal may be determined. The differential signal and the common mode signal may be filtered to attenuate frequencies outside the determined frequency range. A phase and/or amplitude of the filtered common mode signal may be adjusted based on the filtered differential signal and the adjusted and filtered common mode signal may be subtracted from the received differential signal. The common mode signal may be sensed via a pair of resistors coupled to the differential channel.Type: ApplicationFiled: August 1, 2013Publication date: November 28, 2013Applicant: Broadcom CorporationInventors: Mehdi Tavassoli Kilani, Scott Powell, Kadir Dinc, Kishore Kota, John Creigh, Hooman Parizi
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Publication number: 20130315323Abstract: Pilot tones are included within symbols (e.g., orthogonal frequency division multiplexing (OFDM) symbols) transmitted between wireless communication devices. The pilot tones occupy fewer than all tone locations in any given symbol, and the pilot tones occupy different respective locations within different symbols. Generally, these traveling pilots are assigned to different respective tone locations in different symbols. In total, the pilot tones deed not cover every single tone location within the symbols used to convey information between devices. Considering for example, when pilots occupy fewer than all tone locations, even among multiple symbols, a device may perform interpolation to generate a pilot tone estimate corresponding to a tone location not occupied by pilot tone within any symbol. Also, power or magnitude of the pilot tones themselves may be boosted or amplified relative to power magnitude of other tones within such symbols.Type: ApplicationFiled: July 30, 2013Publication date: November 28, 2013Applicant: BROADCOM CORPORATIONInventor: Ron Porat