Patents Assigned to Broadcom
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Patent number: 9092360Abstract: An advanced processor comprises a plurality of multithreaded processor cores each having a data cache and instruction cache. A data switch interconnect is coupled to each of the processor cores and configured to pass information among the processor cores. A messaging network is coupled to each of the processor cores and a plurality of communication ports. In one aspect of an embodiment of the invention, the data switch interconnect is coupled to each of the processor cores by its respective data cache, and the messaging network is coupled to each of the processor cores by its respective message station. Advantages of the invention include the ability to provide high bandwidth communications between computer systems and memory in an efficient and cost-effective manner.Type: GrantFiled: August 1, 2011Date of Patent: July 28, 2015Assignee: Broadcom CorporationInventors: David T. Hass, Basab Mukherjee
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Patent number: 9094314Abstract: Aspects of the invention may provide a system and method for access point aggregation and resiliency in a hybrid wired/wireless local area network. Access point aggregation and resiliency may include determining one or more available switch ports having a capability to handle a first access point group, the first access point group having a first default switch port. One or more available switch ports may be provisioned to provide service to the first access point group. Information may be communicated between the first default switch port and/or any of the provisioned switch ports, while maintaining client status and connection information. Available switch ports may be selected from a reserved pool of available switch ports and upon abatement of a need to utilize the provisioned switch ports, the provisioned switch ports may be returned to the reserved pool of available switch ports.Type: GrantFiled: August 16, 2013Date of Patent: July 28, 2015Assignee: Broadcom CorporationInventors: Richard Martin, Yong Kim
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Patent number: 9094071Abstract: Beamforming protocol for wireless communications. Various communications are made between an originating communication device and a remote communication device to effectuate steered communications there between. The beamforming approach presented herein is applicable and adaptable to communication devices having any combination of omni-directional and directional transmit and receive functionality (e.g., the transmit functionality and the receive functionality both being omni-directional; the transmit functionality being directional and the receive functionality being omni-directional; or the transmit functionality and the receive functionality both being are directional). The beamforming protocol presented herein allows for all combinations of communication device types and also provides collision rules as may be performed in accordance with the beamforming configuration.Type: GrantFiled: November 4, 2009Date of Patent: July 28, 2015Assignee: Broadcom CorporationInventors: Saishankar Nandagopalan, Matthew James Fischer
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Patent number: 9092861Abstract: Embodiments of the present application use motion information of an imaging device in encoding video or image frames captured by the imaging device. In one embodiment, a video encoding system that processes image data captured by an image sensor comprises at least one encoder that receives motion information describing motion of the imaging sensor during capturing of the image data and that encodes the image data with assistance of the motion information.Type: GrantFiled: December 7, 2011Date of Patent: July 28, 2015Assignee: Broadcom CorporationInventors: James Bennett, Gordon (Chong Ming Gordon) Lee
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Patent number: 9094020Abstract: An integrated circuit comprises a circuit module, a first function circuit, and a second function circuit. The first function circuit is configured to be operational in response to a first type logic signal at a first pin and the second function circuit is configured to be operational in response to a second type logic signal at the first pin. The type of logic signal at the first pin is determined by the circuit module. Based on the determined type of logic signal, the circuit module is configured to activate the appropriate function circuit and provide function related signaling for operation at a second pin. The circuit module allows the pins of the integrated circuit to be shared between the first and second function circuits, thus minimizing the number of pins required for multi-functional circuits on the integrated circuit.Type: GrantFiled: June 27, 2013Date of Patent: July 28, 2015Assignee: Broadcom CorporationInventors: Marc Loinaz, Stefanos Sidiropoulos, Whay Sing Lee
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Patent number: 9094054Abstract: An integrated circuit (IC) for use in a device includes a wireless power receiver circuit, a transceiver, and a processing module. The wireless power receiver circuit is operable to convert an electromagnetic signal into a voltage. The transceiver, when operable, transceives a control channel communication. The processing module is operable to: transition the device from an idle state to a charge state when a wireless power transmitter unit is detected; transition the device from the idle state to a wireless power operated state when a wireless power transmit circuit is detected and the device is enabled; and transition the device from the idle state to a battery operated state when the device is enabled and the wireless power transmit circuit is not detected.Type: GrantFiled: May 1, 2010Date of Patent: July 28, 2015Assignee: Broadcom CorporationInventors: John Walley, Jeyhan Karaoguz, Ahmadreza (Reza) Rofougaran, Nambirajan Seshadri, Reinier Van Der Lee
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Patent number: 9093134Abstract: Systems and methods for performing high-speed multi-channel forward error correction using external DDR SDRAM is provided. According to one exemplary aspect, an interleaver/deinterleaver performs both read and write accesses to the DDR SDRAM that are burst-oriented by hiding active and precharge cycles in order to achieve high data rate operations. The interleaver/deinterleaver accesses data in the DDR SDRAM as read blocks and write blocks. Each block includes two data sequences. Each data sequence further includes a predetermined number of data words to be interleaved/deinterleaved. The PRECHARGE and ACTIVE command for one data sequence is issued when a preceding data sequence is being processed. Data in one read/write data sequence has the same row address within the same bank of the DDR SDRAM.Type: GrantFiled: December 21, 2012Date of Patent: July 28, 2015Assignee: Broadcom CorporationInventors: Binfan Liu, Junyi Xu
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Patent number: 9094130Abstract: Embodiments for improving the Signal to Noise and Distortion (SINAD) ratio in Pulse Amplitude Modulation (PAM)-M optical intensity modulation systems, to enable higher data rate communications, are provided. Embodiments can be used to improve the linearity and reduce the distortion of electrical and electro-optics components (including optical modulators) in optical intensity modulation systems. Embodiments are well suited for use with PAM-M optical intensity modulators, such as segmented Vertical Cavity Surface Emitting Laser (WSEL) and segmented Mach-Zehnder Modulator (MZM), for example.Type: GrantFiled: September 30, 2013Date of Patent: July 28, 2015Assignee: Broadcom CorporationInventors: William Bliss, John Wang
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Patent number: 9094076Abstract: 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: GrantFiled: August 1, 2013Date of Patent: July 28, 2015Assignee: Broadcom CorporationInventors: Mehdi Tavassoli Kilani, Scott Powell, Kadir Dinc, Kishore Kota, John Creigh, Hooman Parizi
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Publication number: 20150207635Abstract: A transceiver, a communication system and an associated method thereof for reducing overall power consumption and complexity of the transceiver that operates over short reach twisted pair cables. The analog front end (AFE) of the transceiver communicates over at least one twisted pair that is configured only for transmission of data streams and communicates over at least one twisted pair that is only for reception of data streams. The transceiver includes circuitry that generates multiplexed and demultiplexed data streams for communication with the analog front end. Additionally, the transceiver utilizes at least certain portions of signal processing circuitry and AFE of a 10 GBASE-T transceiver or the like.Type: ApplicationFiled: January 22, 2015Publication date: July 23, 2015Applicant: Broadcom CorporationInventors: Chung Ming TU, Alan Kwentus, William Calvin Woodruff
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Publication number: 20150206821Abstract: In an embodiment, a thermal interface material (TIM) is provided. The TIM includes first and a second layers of a first transition metal, and a third layer including a plurality of carbon nanotubes supported in a flexible polymer matrix and a second transition metal coupled to sidewalls of carbon nanotubes. The first and second metal layers are in contact with first and second ends of carbon nanotube. The TIM further includes fourth and fifth layers of an alloy material coupled to the first and second metal layers, respectively. The carbon nanotube based TIM including the layers with transition metal allow improved heat transfer from an integrated circuit die to a heat spreader.Type: ApplicationFiled: March 31, 2015Publication date: July 23, 2015Applicant: Broadcom CorporationInventors: Sam Ziqun ZHAO, Arpit Mittal, Rezaur Rahman Khan
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Publication number: 20150206651Abstract: A transformer driver circuit couples to a transformer having a primary winding, a secondary winding, and a transformer tap that is connected to a first voltage source. The primary winding electrically connects at its ends to respective unipolar controllable current sinks that form part of an integrated circuit. The transformer driver circuit operates by each current sink selectively sinking current from the end of the primary winding to which it is connected so as to cause current to flow in the secondary winding in a push-pull fashion. The transformer driver circuit further includes a load electrically connected to the secondary winding and protection circuitry operative to protect the integrated circuit from input levels greater than it can withstand.Type: ApplicationFiled: March 30, 2015Publication date: July 23, 2015Applicant: BROADCOM EUROPE LIMITEDInventors: Jonathan Ephraim David Hurwitz, Seyed Danesh, Steven Maughan
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Publication number: 20150205735Abstract: One or more methods and systems of sharing an external memory between functional modules of an integrated circuit chip are presented. The invention provides a system and method of reducing the amount of off-chip memory utilized by one or more integrated circuit chips. In one embodiment, a method for sharing an off-chip memory among one or more on-chip functional modules comprises arbitrating the communication of data between one or more on-chip functional modules and the off-chip memory. In one embodiment, the arbitration is facilitated by using an internal data bus that is controlled by a bus arbiter control unit. In one embodiment, a system for sharing an off-chip memory between functional modules of an integrated circuit comprises a security processing module, a media access controller module, a data interface, and a data bus.Type: ApplicationFiled: January 29, 2015Publication date: July 23, 2015Applicant: Broadcom CorporationInventor: Mark Buer
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Publication number: 20150207502Abstract: Reference-less repeating circuits provide significant advantages over repeating circuits requiring external frequency references. These repeating circuits eliminate the need for external frequency references provide significant power, layout, and physical isolation advantages. Digitally controlled reference-less repeating circuits have a relatively narrow frequency detection range, but typically consume significantly less power than analog repeating circuits while providing data rate flexibility, particularly at lower data rates. Due to the narrow frequency detection range of digitally controlled reference-less repeating circuits, efficient frequency estimation techniques allow these circuits to quickly lock to an input signal, and provide an accurate repeated output signal.Type: ApplicationFiled: April 7, 2014Publication date: July 23, 2015Applicant: BROADCOM CORPORATIONInventors: MAGESH VALLIAPPAN, AFSHIN MOMTAZ, NAMIK KOCAMAN, VASUDEVAN PARTHASARATHY
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Publication number: 20150207573Abstract: Automotive area networks (AAN) have a substantially fixed network topology, meaning that the physical media used for communications between devices included in the AAN is known. For example, the physical connections within an AAN, sometimes provided by wiring harnesses, can include fixed lengths of twisted pairs of wire (“twisted pairs”). Pre-compensation parameters related to characteristics of the twisted pairs can be determined at the factory, and loaded into the memory of devices connected to the AAN. These pre-compensation parameters are used to improve the fast wake up and link acquisition times of connected devices. Various characteristics of the physical communication channel are measured or estimated as a function of mechanical, ingress, climactic, and environmental variations (MICE), and used to update the pre-compensation parameters.Type: ApplicationFiled: March 31, 2015Publication date: July 23, 2015Applicant: BROADCOM CORPORATIONInventors: Wael William Diab, Mehmet V. Tazebay
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Publication number: 20150207739Abstract: Aspects of oversubscription monitoring are described. In one embodiment, oversubscription monitoring includes accumulating an amount of data that arrives at a network component over at least one epoch of time. Further, a core processing rate at which data can be processed by the network component is calculated. Based on the amount of data and the core processing rate, it is determined whether the network component is operating in an oversubscribed region of operation. In one embodiment, when the network component is operating in the oversubscribed region of operation, certain quality of service metrics are monitored. Using the monitored metrics, a network operation display object may be generated for identifying or troubleshooting network errors during an oversubscribed region of operation of the network component.Type: ApplicationFiled: April 1, 2015Publication date: July 23, 2015Applicant: BROADCOM CORPORATIONInventors: William Brad MATTHEWS, Puneet AGARWAL, Bruce Hui KWAN
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Publication number: 20150207610Abstract: A method and system are provided in which a device that is operable to handle WiFi communication and WiMAX communication may receive downlink medium access protocol (MAP) information in a downlink sub-frame of a WiMAX frame and disable WiFi transmission during a portion of the downlink sub-frame based on the downlink MAP information. The disabled WiFi transmission may be enabled after data within the downlink sub-frame is decoded. The device may also receive uplink MAP information in the downlink sub-frame and may control a clear channel assessment associated with the WiFi transmission based on the uplink MAP information. The MAP information may comprise data or burst profile information and/or one or more physical control messages. A similar time domain approach may be utilized for coexistence between WiFi and long term evolution (LTE) coexistence, Bluetooth and WiMAX, and Bluetooth and LTE. Frame aggregation may be enabled to alleviate pending WiFi traffic.Type: ApplicationFiled: March 30, 2015Publication date: July 23, 2015Applicant: Broadcom CorporationInventor: Kameswara Rao MEDAPALLI
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Publication number: 20150208442Abstract: A method, apparatus and computer program product are provided in order to allow an uplink resource request to be transmitted to the access point even in an instance in which the mobile terminal is receiving a continuous downlink transmission and repeated ACK/NACK transmissions are enabled. In this regard, a method, apparatus and computer program product are provided to prioritize a preamble transmission for a random access procedure relative to the repeated ACK/NACK transmissions. The method, apparatus and computer program also prioritize at least one message of the random access procedure.Type: ApplicationFiled: May 9, 2012Publication date: July 23, 2015Applicant: BROADCOM CORPORATIONInventors: Wei Bai, Jing Han, Chunyan Gao, Haiming Wang, Asbjoern Groevlen
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Patent number: 9088686Abstract: A method and system are provided in which a processor may perform fast source switching and/or automatic source switching by keeping active the signals from multiple sources. The processor may determine which received video signals are locked-in within a front-end portion of the processor. A video signal may be locked-in when a demodulator is locked to a carrier in the video signal or when a decoder is programmed to decode the video signal. During operation, the processor may switch from processing a current video signal to processing a video signal selected from those determined to be locked-in. The processor may maintain active a portion of a back-end portion of the processor to handle the switch from the current video signal to the selected video signal. The processor may switch to process between video signals when a predetermined content and/or metadata is detected within one of the video signals.Type: GrantFiled: February 14, 2014Date of Patent: July 21, 2015Assignee: Broadcom CorporationInventors: Gaurav Arora, Adil Jagmag
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Patent number: 9088451Abstract: Systems and methods that network interface in a multiple network environment are provided. In one embodiment, the system includes, for example, a network connector, a processor, a peripheral component interface (PCI) bridge and a unified driver. The processor may be coupled to the network connector and to the PCI bridge. The processor may be adapted, for example, to process a plurality of different types of network traffic. The unified driver may be coupled to the PCI bridge and may be adapted to provide drivers associated with the plurality of different types of network traffic.Type: GrantFiled: January 13, 2014Date of Patent: July 21, 2015Assignee: BROADCOM CORPORATIONInventors: Uri Elzur, Frankie Fan, Steven B. Lindsay, Scott McDaniel