Patents Assigned to Broadcom
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Patent number: 8995509Abstract: Systems and methods are provided to enable a near-end receiver to control the far-end transmitter's data transmission such that the near-end receiver's TC data buffers do not overflow. In an embodiment, a high waterline and low waterline implemented into a near-end receiver are used to determine when the near-end receiver's TC data buffers are near maximum capacity. In an embodiment, the near-end receiver transmits a Packet Transfer Mode (PTM) All Idle Out Of Sync (AIOOS) codeword to the far-end transmitter when the high waterline is reached, and the near-end receiver stops transmitting the AIOOS codeword when the low waterline is reached.Type: GrantFiled: November 25, 2013Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventor: Philip Desjardins
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Patent number: 8996736Abstract: Aspects of a clock domain crossing serial interface, direct latching over the serial interface, and response codes are described. In various embodiments, a data communication command received over a serial interface is identified, and an address received over the serial interface is resolved to access a register bank. In a write operation, depending upon whether the address falls within a direct latch address range of the register bank, data may be directly latched into a direct latch register of the register bank or into a first-in-first-out register. For both read and write operations, reference may be made to a status register of the serial interface to identify or mitigate error conditions, and wait times may be relied upon to account for a clock domain crossing. After each of the read and write operations, a response code including a status indictor may be communicated.Type: GrantFiled: July 25, 2013Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Veronica Alarcon, Walid Nabhane, Mark Norman Fullerton, Love Kothari, Ronak Subhas Patel, Chih-Tsung Hsieh, Hao-zheng Lee
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Patent number: 8995289Abstract: Aspects of a method and system for implementing energy efficient Ethernet techniques in a MACSec enabled PHY are provided. In this regard, an Ethernet PHY comprising memory may be operable to perform packet processing functions comprising MACSec protocol processing and energy efficient Ethernet (EEE) processing. In this regard, the memory may be utilized for implementing the MACSec protocol processing and energy efficient Ethernet (EEE) processing. The Ethernet packet processing functions may comprise packet inspection, packet generation, and packet modification. The energy efficient Ethernet (EEE) processing may comprise generating and/or inspecting messages for controlling when to transition into and out-of an energy-saving mode. The Ethernet PHY may be operable to monitor signals and/or conditions within the Ethernet PHY and control transitions into and out-of an energy-saving mode based on the monitored signals and/or conditions.Type: GrantFiled: June 10, 2009Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Wael William Diab, Nicholas Ilyadis
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Patent number: 8995411Abstract: Aspects of a method and system for content-aware mapping/error protection using different spatial streams are presented. Aspects of a system for handling multimedia information in a communication system may include a transmitter that enables control of a MAC layer and/or a PHY layer, in a wireless communication device to wirelessly communicate different portions of multimedia information via different spatial streams based on content of the multimedia information. The system may also comprise a processor that enables definition of a plurality of priority classes based on the content associated with at least a portion of the multimedia information.Type: GrantFiled: July 25, 2006Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Hooman Honary, Jeyhan Karaoguz, Nambirajan Seshadri, Jason Trachewsky
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Patent number: 8995288Abstract: A deployed configurable communication integrated circuit (IC) and/or chipset which may be integrated within a wireless communication and/or multi-media communication device may be operable to monitor its operating conditions, performance and/or utilization characteristics. It may send information via a wireless, optical and/or wired network to a remote analysis and/or development system and/or service, such as an engineering service, that may determine and return configuration parameters. The configuration parameters may be utilized to adjust antenna and/or MIMO, SIMO, MISO and beamforming configuration, power level, interference rejection, equalizer length, dynamic range, modulation, encoding and/or decoding, analog to digital conversion precision, error detection and/or correction parameters, MAC parameters such as timing thresholds, transmit window size and/or buffer space.Type: GrantFiled: June 10, 2008Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventor: Jeyhan Karaoguz
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Patent number: 8996962Abstract: A plurality of encrypted packets having common payload data are received, wherein each of the plurality of encrypted packets includes a corresponding parity check field, and wherein a corresponding parity check syndrome for each of the plurality of encrypted packets indicates at least one bit error. A payload portion of each of the plurality of encrypted packets is decrypted to generate a plurality of decrypted payload portions. At least one chase coding technique is used to generate a corrected decrypted payload, based on at least one candidate bit error position and further based on the corresponding parity check syndrome for at least one of the plurality of encrypted packets.Type: GrantFiled: March 21, 2013Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Robert W. Zopf, Prasanna Desai, Norbert Grunert
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Patent number: 8995567Abstract: Aspects of a method and system for power supply adjustment and polar modulation in a MIMO system are provided. In each RF transmit chain of a MIMO system that utilizes polar modulation, aspects of the invention may enable generating a signal representative of an amplitude of a pair of phase-quadrature baseband signals; and controlling a voltage and/or current regulator utilizing said generated signal. In this regard, a voltage and/or current supplied to a power amplifier and/or mixer of one or more of the transmit chains may be controlled based on the generated signal. Additionally, a gain of a power amplifier for each RF transmit chain may be controlled utilizing said signal representative of an amplitude. The signal representative of an amplitude may be generated by squaring each of the phase-quadrature baseband signals and calculating a square root of a sum of the squared signals.Type: GrantFiled: October 22, 2007Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Ahmadreza Rofougaran, Maryam Rofougaran
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Patent number: 8993392Abstract: A vertically stacked, planar junction Zener diode is concurrently formed with epitaxially grown FET raised S/D terminals. The structure and process of the Zener diode are compatible with Gate-Last high-k FET structures and processes. Lateral separation of diode and transistor structures is provided by modified STI masking. No additional photolithography steps are required. In some embodiments, the non-junction face of the uppermost diode terminal is silicided with nickel to additionally perform as a copper diffusion barrier.Type: GrantFiled: June 21, 2013Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Wei Xia, Xiangdong Chen
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Transceiver self-diagnostics for electromagnetic interference (EMI) degradation in balanced channels
Patent number: 8995507Abstract: Transceiver self-diagnostics for electromagnetic interference (EMI) degradation in balanced channels. Selective operation of transmitting a common mode signal from a communication link implemented for supporting differential signaling, and appropriate processing of any detected signal energy, such as that corresponding to differential signal energy, provides a measure of electromagnetic compatibility (EMC) corresponding to the communication link. Comparison of detected differential signal energy to one or more thresholds may provide indication of whether or not the communication link is balanced or unbalanced, a degree or margin with which the communication link is compliant in accordance with EMC in accordance with one or more protocols, standards, or recommended practices. Multiple successive measurements of detected differential signal energy may be used to determine a trend of performance, such as whether or not the communication link is trending toward imbalance, failure, or noncompliance.Type: GrantFiled: August 26, 2011Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Scott R. Powell, Mehmet V. Tazebay -
Patent number: 8992631Abstract: Systems and methods of theft prevention of communication devices are provided. In one embodiment, the method may include, for example, one or more of the following: registering a communication device being used at a home, where the device is connected to a communication network; entering validation information relating to the communication device; and analyzing the validation information to determine whether the communication device is authorized for use in the communication network.Type: GrantFiled: December 31, 2012Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Jeyhan Karaoguz, James D. Bennett
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Patent number: 8995321Abstract: 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 Win and long term evolution (LTE) coexistence, Bluetooth and WiMAX, and Bluetooth and LTE. Frame aggregation may be enabled to alleviate pending WiFi traffic.Type: GrantFiled: August 5, 2013Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventor: Kameswara Rao Medapalli
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Patent number: 8995937Abstract: Methods and systems for controlling power for a power amplifier utilizing a leaky wave antenna (LWA) are disclosed and may include configuring one or more power amplifiers (PAs) in a wireless device at a desired output power level. The PAs may be coupled to feed points on the LWAs that may exhibit an input impedance corresponding to an output impedance of the PAs. RF signals may be transmitted utilizing the LWAs. A resonant frequency of the LWAs may be configured utilizing micro-electro-mechanical systems (MEMS) deflection. The LWAs may be configured to transmit the RF signals in a desired direction. The LWAs may comprise microstrip or coplanar waveguides, wherein a cavity height of the LWAs is dependent on spacing between conductive lines in the waveguides. The input impedances of the feed points may be dependent on a position of the feed points in the cavities.Type: GrantFiled: June 9, 2010Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Ahmadreza Rofougaran, Maryam Rofougaran
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Patent number: 8995931Abstract: Disclosed herein are systems, apparatuses, and methods for creating a system of wireless-enabled components (WECs). Such a system includes a server and a plurality of wireless-enabled component (WECs). Each WEC includes a functional resource (e.g., a processing resource and/or a memory resource) and is configured for wireless communication with the server and one or more other WECs. A first WEC is configured to wirelessly upload, to the server, an availability of the functional resource of the first WEC. The first WEC is further configured to wirelessly download, from the server, a linking resource for linking with one or more of the plurality of WECs. The plurality of WECs may be located on a single chip, on multiple chips of a single device, or on multiple chips of multiple devices.Type: GrantFiled: September 8, 2010Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Ahmadreza (Reza) Rofougaran, Arya Reza Behzad, Michael Boers, Jesus Alfonso Castaneda, Sam Ziqun Zhao
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Patent number: 8996949Abstract: Method and system encodes a signal according to a code rate that includes a ratio of uncoded bits to coded bits. An outer encoder encodes the signal into code words. An interleaver converts the code words into a byte sequence for wireless transmission. An inner encoder executes a convolutional code to generate an encoded signal. The encoded signal is transmitted over a plurality of subcarriers associated with a wide bandwidth channel having a spectral efficiency associated with the code rate. The outer encoder includes a Reed-Solomon encoder having a rate that increases the code rate of uncoded bits to coded bits.Type: GrantFiled: December 18, 2013Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Christopher J. Hansen, Jason Alexander Trachewsky, Rajendra T. Moorti
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Patent number: 8995314Abstract: A packet voice transceiver adapted to reside at a first end of a communication network and to send an ingress communication signal comprising voice packets to, and receive an egress communication signal comprising voice packets from, a second packet voice transceiver residing at a second end of the communication network. The packet voice transceiver includes a far-end echo canceller that reduces echo that is present in the egress communication signal. The far-end communicates with other functional components of the transceiver system and cancels echo or refrains from canceling echo based on the activity of the other functional components.Type: GrantFiled: July 19, 2013Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventor: Wilfrid Leblanc
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Patent number: 8994816Abstract: A system and method for providing access to a video display for multiple devices. Various aspects of the present invention may comprise receiving, at a video display system, a first video data signal through a first data communication interface and a second video data signal through a second data communication interface. A processor module may process the first and second video data signals to generate video information of first and second display windows in a composite display. For example, the processor module may transform and translate video information to fit display windows. The processor module may, for example, generate an output video signal comprising information of the first window and information of the second window. Such a signal may, for example, be utilized to drive an output display showing the first and second windows. Various aspects may also provide method steps and apparatus for controlling aspects of the displayed windows.Type: GrantFiled: August 1, 2011Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventors: Jeyhan Karaoguz, James D. Bennett
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Patent number: 8996885Abstract: Secure processing systems providing host-isolated security are provided. An exemplary secure processing system includes a host processor and a virtual machine instantiated on the host processor. A virtual unified security hub (USH) is instantiated on the virtual machine to provide security services to applications executing on the host processor. The virtual USH may further include an application programming interface (API) operable to expose the security services to the applications. A further exemplary secure processing system includes a host processor running a windows operating system for example, a low power host processor, and a USH processor configured to provide secure services to both the host processor and the low power host processor isolating the secure services from the host processor and the low power processor. The USH processor may also include an API to expose the security services to applications executing on the host processor and/or the low power host processor.Type: GrantFiled: October 2, 2009Date of Patent: March 31, 2015Assignee: Broadcom CorporationInventor: Mark Buer
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Publication number: 20150084708Abstract: 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: ApplicationFiled: December 5, 2014Publication date: March 26, 2015Applicant: Broadcom CorporationInventors: Farid SHIRINFAR, Tirdad Sowlati, Maryam Rofougaran, Ahmadreza Rofougaran
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Publication number: 20150084837Abstract: Methods, systems, and apparatuses are described for coordination of multiple mobile device displays to display any image(s) so that each device displays an image based on its relative position in an arrangement of a plurality of mobile devices. Random configurations of uniform and non-uniform mobile device displays may be adapted as display elements in a larger display or in a related display, such as game pieces.Type: ApplicationFiled: September 25, 2013Publication date: March 26, 2015Applicant: Broadcom CorporationInventor: Murat Mese
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Publication number: 20150089319Abstract: Disclosed are various embodiments for in-band management of Ethernet links utilizing a bit-interleaved parity (BIP) block in a transmission frame. According to various embodiments, a bit-interleaved parity error code may be generated for a monitored portion of network data for transmission in a first bit-interleaved parity block. Subsequently, network management data may be encoded in a plurality of bits for transmission in a second bit-interleaved parity block according to a predefined block code, wherein the predefined block code generates the plurality of bits to maintain a DC balance between the bit-interleaved parity error code and the plurality of bits.Type: ApplicationFiled: October 24, 2013Publication date: March 26, 2015Applicant: Broadcom CorporationInventors: Ali Ghiasi, Velu Chellam Pillai