Patents Assigned to Broadcom
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Patent number: 9001714Abstract: An Ethernet physical layer device using time division duplex. A time division duplex frame can be defined with uplink and downlink transmission periods. These defined uplink and downlink transmission periods can be adjusted based on bandwidth and latency considerations on the network link.Type: GrantFiled: November 21, 2011Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Ahmad Chini, Mehmet Tazebay, Scott Powell
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Patent number: 9001843Abstract: 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: GrantFiled: November 12, 2012Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Wael William Diab, Mehmet V. Tazebay
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Patent number: 9001869Abstract: A device for high-speed clock generation may include an injection locking-ring oscillator (ILRO) configured to receive one or more input clock signals and to generate multiple clock signals with different equally spaced phase angles. A phase-interpolator (PI) circuit may be configured to receive the multiple coarse spaced clock signals and to generate an output clock signal having a correct phase angle. The PI circuit may include a smoothing block that may be configured to smooth the multiple clock signals with different phase angles and to generate multiple smooth clock signals. A pulling block may be configured to pull edges of the multiple smooth clock signals closer to one another.Type: GrantFiled: July 19, 2013Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Mahmoud Reza Ahmadi, Siavash Fallahi, Tamer Ali, Ali Nazemi, Hassan Maarefi, Burak Catli, Afshin Momtaz
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Patent number: 9001072Abstract: Asymmetric scanning logic implements asymmetric panel scanning by scanning some rows on a touch panel more frequently than other rows. Note that although an entire row at a time may be driven, if only particular pixels in the row are of interest (e.g., included in any region of interest for focused asymmetric scanning), then circuitry may power down the receivers for the columns in which the pixels exist to save power. The asymmetric scanning logic facilitates focused attention to specific areas of interest on the touch panel, to compensate, for example, for high noise or low signal strength in those areas of interest.Type: GrantFiled: March 9, 2012Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: David A. Sobel, Sumant Ranganathan, Tianhao Li, John S. Walley, Glen Weaver, Kerrynn Jacques de Roche, Pi Sheng Chang
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Patent number: 9001680Abstract: A method, apparatus and computer program product provide improved detection of overlapping wireless networks. In this regard, the method, apparatus and computer program product may utilize a processor, such as a processor on a wireless access point, to determine one or more parameters for a scan of a wireless network to identify overlapping networks. Wireless stations may utilize the parameters to determine the content of a scan report generated from a scan of the wireless network. The wireless stations may further utilize the parameters to determine which values should be monitored and/or recorded during the scan of the network. The wireless stations may respond to the access point with results corresponding to the parameters requested by the access point, and the access point may use the results to determine channel access parameters for other devices on the network, such as the wireless stations.Type: GrantFiled: July 16, 2012Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Timo K. Koskela, Anna Pantelidou, Samuli Turtinen, Sami-Jukka Hakola
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Patent number: 9002295Abstract: A SAW-less receiver includes an FEM interface module, an RF to IF receiver section, and a receiver IF to baseband section. The RF to IF receiver section includes a mixing module, a mixed buffer section, and a frequency translated BPF (FTBPF) circuit module. The mixing module converts an inbound RF signal into an in-phase (I) mixed signal and a quadrature (Q) mixed signal. The mixed buffer section filters and buffers the I mixed signal and filter and buffer the Q mixed signal. The FTBPF circuit module frequency translates a baseband filter response to an IF filter response such that the FTBPF circuit module filters undesired signal components of the IF I signal and the IF Q signal to produce an inbound IF signal. The receiver IF to baseband section converts the inbound IF signal into one or more inbound symbol streams.Type: GrantFiled: September 16, 2013Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Ahmad Mirzaei, Hooman Darabi
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Patent number: 9001740Abstract: 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: GrantFiled: July 31, 2013Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Hooman Darabi, Ahmadreza Rofougaran
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Patent number: 9002673Abstract: Methods and apparatus are disclosed to simultaneously, wirelessly test semiconductor components formed on a semiconductor wafer. The semiconductor components transmit respective outcomes of a self-contained testing operation to wireless automatic test equipment via a common communication channel. Multiple receiving antennas observe the outcomes from multiple directions in three dimensional space. The wireless automatic test equipment determines whether one or more of the semiconductor components operate as expected and, optionally, may use properties of the three dimensional space to determine a location of one or more of the semiconductor components. The wireless testing equipment may additionally determine performance of the semiconductor components by detecting infrared energy emitted, transmitted, and/or reflected by the semiconductor wafer before, during, and/or after a self-contained testing operation.Type: GrantFiled: February 11, 2011Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Arya Reza Behzad, Ahmadreza Rofougaran, Sam Ziqun Zhao, Jesus Alfonso Castaneda, Michael Boers
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Patent number: 9001709Abstract: Methods, apparatus and computer program products are provided for rebalancing the sizes of downlink (DL) association sets for component carriers having different time division duplex subframe configurations. A method is provided that includes determining DL subframes that are included in a DL association set for each of a plurality of component carriers. In an instance in which the number of acknowledgement (ACK)/negative acknowledgement (NACK) bits corresponding to the DL subframes included in the DL association sets for respective component carriers differ by at least a predetermined amount, the method modifies the number of ACK/NACK bits corresponding to the DL subframes that are included in the DL association sets for each of the respective component carriers. The method may also cause transmission of the ACK/NACK bits in accordance with the DL association sets, as modified, via the respective component carriers. Corresponding apparatus and computer program products are also provided.Type: GrantFiled: September 4, 2013Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Erlin Zeng, Jing Han, Wei Bai, Chunyan Gao, Haiming Wang, Na Wei
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Patent number: 9001896Abstract: Methods and systems for processing video are disclosed. The method may include performing by one or more processors and/or circuits on a chip, receiving packetized data within an encoded video stream. An identifier may be determined within the received packetized data that defines one of a plurality of encoding types associated with packets in the encoded video stream. A decoding process may be selected from a plurality of decoding processes based on the determined identifier. The plurality of decoding processes may include a fixed length coding (FLC) process, a variable length coding (VLC) process and/or a context adaptive binary arithmetic coding (CABAC) process. At least a portion of the received packetized data in the encoded video stream may be decoded on the chip, utilizing the selected decoding process. A start code may be determined within the received packetized data that separates packets within the encoded video stream.Type: GrantFiled: September 15, 2009Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventor: Stephen Gordon
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Patent number: 9001801Abstract: Methods and systems for controlling a personal area network access device are disclosed herein. Aspects of the method may comprise receiving an application event associated with a particular application running on a complex Bluetooth® device that is running a plurality of simultaneous applications, and determining whether a low power mode is allowed by the particular application running on the complex Bluetooth® device. If the low power mode is allowed by the particular application running on the complex Bluetooth® device, the complex Bluetooth® device running the particular application may be configured to operate utilizing the allowed low power mode. The allowed low power mode may be switched by the complex Bluetooth® device based on the application event. An active mode may be switched from a current mode prior to switching to the allowed power mode based on the application event.Type: GrantFiled: December 21, 2004Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Jason Hillyard, Jaku Jose
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Patent number: 9001534Abstract: 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: GrantFiled: December 17, 2010Date of Patent: April 7, 2015Assignee: Broadcom Europe LimitedInventors: Jonathan Ephraim David Hurwitz, Seyed Danesh, Steven Maughan
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Patent number: 9001845Abstract: An apparatus and method for communication are provided. The solution includes controlling the estimation of a radio channel to obtain an estimate of a channel quality, performing quantization of the estimate of the channel quality to obtain a channel quality index, the quantization steps being of non-uniform size and selected on the basis of the accuracy of the estimation on different levels of channel quality, and controlling the transmission of the channel quality index to the communication system.Type: GrantFiled: February 27, 2013Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Mihai Enescu, Tommi Koivisto
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Patent number: 9001004Abstract: A wireless communication device includes a receiver section, a transmitter section, an antenna interface, and an antenna assembly. The receiver section is operable to convert an inbound wireless signal into an inbound symbol stream. The transmitter section is operable to convert an outbound symbol stream into an outbound wireless signal. The antenna interface is operable to convert the outbound wireless signal into a plurality of phase-shifted outbound wireless signals and to convert a plurality of phase-shifted received wireless signals into the inbound wireless signal. The antenna assembly includes a plurality of interwoven spiral antenna units coupled together by a plurality of connection traces, wherein an interwoven spiral antenna unit of the plurality of interwoven spiral antenna units receives a corresponding one of the plurality of phase-shifted received wireless signals and transmits a corresponding one of the plurality of phase-shifted outbound wireless signals.Type: GrantFiled: September 30, 2011Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Nicolaos G. Alexopoulos, Seunghwan Yoon, Alfred G. Besoli
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Patent number: 9001846Abstract: According to one example embodiment, an apparatus may include a media-side physical layer (PHY) block configured to receive a received signal via at least one medium, decode the received signal into data, and send the data to a media-side medium access control (MAC) block, the media-side MAC block configured to receive the data from the media-side PHY layer block, determine a time of receipt of the data, prevent a system-side MAC block from forwarding the data until a predetermined delay after the time of receipt, perform MAC functions on the data, and send the data to the system-side MAC block, the system-side MAC block configured to receive the data and the control time from the media-side MAC block and send the data to a system-side PHY block after the predetermined delay based on signals received from the media-side MAC block, and the system-side PHY block configured to receive the data from the system-side MAC block, encode the data into a transmitted signal, and transmit the transmitted signal to a compType: GrantFiled: August 28, 2009Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Meg Lin, Daniel Tai
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Patent number: 9002034Abstract: In a method and system for audio level detection and control, an amplitude of an audio signal may be compared to a threshold and an attenuation applied to the audio signal may be adjusted based on the comparison. In instances that the amplitude of the audio signal is greater than or equal to the threshold the adjustment may comprise increasing a first attenuation factor until the amplitude of the audio signal is less than the threshold. The first attenuation factor may be subsequently decreased until the amplitude of the audio signal is greater than or equal to the threshold or until the first attenuation factor is equal to zero. The attenuation of the audio signal may be controlled via a digital gain circuit within the hardware audio CODEC, wherein an overall attenuation factor of the digital gain circuit is a sum of the first attenuation factor and a second attenuation factor.Type: GrantFiled: June 25, 2012Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Nelson Sollenberger, Radhakrishnan Kuzhipatt, Hongwei Kong
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Patent number: 9000558Abstract: A packaged integrated circuit includes an integrated circuit having a Radio Frequency (RF) passive element formed therein and a wafer level chip scale flip chip package that contains the integrated circuit. The wafer level chip scale flip chip package includes at least one dielectric layer isolating a top metal layer of the integrated circuit and a package signal connection upon the at least one dielectric layer, wherein the package signal connection partially overlays the RF passive element with respect to a surface of the integrated circuit. The RF passive element may be an inductor, a transformer, a capacitor, or another passive element. The package signal connection may be a conductive ball, a conductive bump, a conductive pad, or a conductive spring, for example. A conductive structure may reside upon the at least one dielectric layer to provide shielding to the RF passive element and may include a plurality of conductive elements or a mesh.Type: GrantFiled: August 3, 2009Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Ali Sarfaraz, Arya Reza Behzad
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Patent number: 9002983Abstract: A system, method and computer program product is provided for selectively caching domain name system (DNS) information on a network gateway. A CPE attached to the network gateway executes an application that searches files in CPE memory to identify frequently accessed domain names. The domain names are used to generate DNS queries that are transmitted by a network gateway to an IP network for resolution. DNS responses are received from the IP network and parsed to extract each resolved domain name and corresponding IP address, which are then stored in a cache on the network gateway. The cache is then used to resolve DNS queries generated by application programs running on the attached CPE.Type: GrantFiled: August 27, 2013Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventor: Charles E Anderson, IV
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Patent number: 9002261Abstract: A plurality of repeater devices, each of which may enable forwarding extreme high frequency (EHF) communication between EHF-enabled wireless devices, may form a repeater mesh network. Some or all of the plurality of repeater devices may utilize non-extremely high frequency (non-EHF) control connection in communicating with other repeater devices in the repeater mesh network. The non-EHF control connections may be utilized in establishing, configuring, and/or managing the repeater mesh network. The non-EHF control connections may be also be utilized to enable sending, requesting, and/or receiving periodic and/or dynamic control information. The non-EHF control connections may also be utilized while forming, and/or managing forwarding routes of EHF communication via the repeater mesh network, to enable negotiating and/or setting different isolation techniques among the repeater devices, such as polarization isolation, spatial isolation, and/or use of different frequencies.Type: GrantFiled: October 12, 2007Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Ahmadreza Rofougaran, Maryam Rofougaran
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Patent number: 9000860Abstract: A circuit for a low-loss electrical balance duplexer (EBD) with noise cancellation may include an EBD circuit. The EBD circuit may be coupled to one or more output nodes of a transmit (TX) path, an antenna, and a one or more input nodes of a receive (RX) path. The EBD circuit may be configured to isolate the TX path from the RX path, and to provide low-loss signal paths between the one or more output nodes of the TX path and the antenna. A balancing network may be coupled to the EBD circuit and configured to provide an impedance that matches an impedance associated with the antenna. A noise cancellation circuit may be configured to sense a noise signal generated by the balancing network, and to use the sensed noise signal to improve a signal-to-noise ratio (SNR) of the RX path.Type: GrantFiled: December 18, 2012Date of Patent: April 7, 2015Assignee: Broadcom CorporationInventors: Mohyee Mikhemar, Hooman Darabi