Patents Assigned to Broadcom
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Patent number: 8766801Abstract: A dual band antenna includes a far field antenna structure for facilitating the communication of first data with a remote device via far field signaling in a millimeter wave band. A near field antenna structure facilitates the communication of second data with a remote device via near field signaling in a near field band. The far field antenna structure and the near field antenna structure share at least one common antenna element.Type: GrantFiled: October 29, 2012Date of Patent: July 1, 2014Assignee: Broadcom CorporationInventor: Ahmadreza Rofougaran
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Patent number: 8767756Abstract: A switch, switched architecture and process for transferring data through an FCAL switch is disclosed. The switch uses multiple switch control circuits each coupled to one FCAL network and all connected to a crossbar switch. The switch control circuits are coupled together by a protocol bus for coordination purposes. Local conversations can occur on each FCAL loop and crossing conversations through the switch can occur concurrently. The OPN primitive us used to establish the connection before any data is transferred thereby eliminating the need for buffer memory in the switch control circuits. The destination address of each OPN is used to address a lookup table in each switch control circuit to determine if the destination node is local. If not, the destination is looked up and a connection request made on the protocol bus. If the remote port is not busy, it sends a reply which causes both ports to establish a data path through the backplane crossbar switch.Type: GrantFiled: November 19, 2008Date of Patent: July 1, 2014Assignee: Broadcom CorporationInventors: Alistair D. Black, Kurt Chan
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Patent number: 8767562Abstract: A method and apparatus for generating a performance indicator in a high-speed communication system. A plurality of disparate communication status signals with differing formats from a transceiver are combined in a logic module to create a single link quality indicator signal. The link quality indicator signal is used to encode different operational states of the transceiver from fully operational, to marginally operational, to failed. The link quality indicator signal is advantageously employed to drive a LED creating a visual performance indicator.Type: GrantFiled: May 13, 2011Date of Patent: July 1, 2014Assignee: Broadcom CorporationInventors: Andrew J. Castellano, Gary S. Huff
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Publication number: 20140177717Abstract: Various methods and systems are provided for reduction of I-pulsing artifacts. In one example, among others, a method includes modifying at least a portion of a picture to be encoded as an I picture based at least in part upon a picture that precedes the picture. The modification can reduce an I-pulsing artifact associated with the I picture. The modified picture is intra-coded for inclusion in a series of encoded pictures, which may then be transmitted. In another example, an encoder includes adaptive pre-processing circuitry configured to modify at least a portion of a first picture based at least in part upon a second picture that precedes the first picture in a series of video pictures. For example, the modification may be based upon coding noise associated with the preceding picture. Intra-encoding processing circuitry is configured to encode the modified picture as an I picture.Type: ApplicationFiled: March 15, 2013Publication date: June 26, 2014Applicant: BROADCOM CORPORATIONInventors: Junlin Li, Alexander Garland MacInnis, Brad Albert Delanghe, Lei Zhang
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Publication number: 20140177970Abstract: Aspects of a device, system, and method for subset determination and processing are described. In certain aspects, a process for subset determination includes determining a reference for correlation with at least one image and identifying a set of images for comparison with the reference. The reference for correlation may be specified by a user based on a desire to determine a subset of certain images from a larger group. The process further includes determining a subset of the set of images based on a correlation between the reference and the set of images. According to various features, a subset of images that not only includes certain images but also excludes certain images may be determined quickly.Type: ApplicationFiled: January 17, 2013Publication date: June 26, 2014Applicant: Broadcom CorporationInventor: Murat Mese
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Publication number: 20140181611Abstract: A system, method and computer program product is provided for mitigating the effects of burst noise on packets transmitted in a communications system. A transmitting device applies an outer code, which may include, for example, a block code, an exclusive OR (XOR) code, or a repetition code, to one or more packets prior to adaptation of the packets for transmission over the physical (PHY) layer of the communications system, wherein the PHY layer adaptation may include FEC encoding of individual packets. The outer coded packets are then separately transmitted over a channel of the communications system. A receiving device receives the outer coded packets, performs PHY level demodulation and optional FEC decoding of the packets, and then applies outer code decoding to the outer coded packets in order to restore packets that were erased during transmission due to burst noise or other impairments on the channel.Type: ApplicationFiled: March 3, 2014Publication date: June 26, 2014Applicant: Broadcom CorporationInventors: Bruce J. Currivan, Thomas J. Kolza, Daniel H. Howard, Thomas J. Quigley, Nambi Seshadri, Thomas L. Johnson, Scott Cummings, James Harrell, Fred Bunn, Joel Danzig, Stephen Hughey
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Publication number: 20140177613Abstract: A Wi-Fi Direct Group Owner stores network parameters needed for proper operation of a peer-to-peer network. These include the network name and identifier, the power save schedule, the security settings, MAC address of all of the group members, etc. To reduce the need for a single Group Owner, this information is distributed. As each new device is added to the network, all of these parameters are passed via IEEE 802.11 data packets from the device acting as the Group Owner to the new peer device. This way, the new peer device has all of the information about the group at the time that it joins. Any device in the Resilient Peer Network can temporarily take on the role of a traditional Wi-Fi Direct Group Owner (admission control). Selection of which peer will act as a Group Owner will depend on a user action or network event.Type: ApplicationFiled: January 31, 2013Publication date: June 26, 2014Applicant: BROADCOM CORPORATIONInventors: Roman Baker, Raymond R. Hayes
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Publication number: 20140177622Abstract: Apparatus, a method and a non-transitory computer-readable storage medium including a set of computer-readable instructions stored thereon, which when executed by a processor causes performance of operations, including periodically measure a received signal strength indication of a broadcast control channel received from a current serving cell to detect a presence of a co-channel broadcast control channel interference. In response to determining the presence of the co-channel broadcast control channel interference, a synchronization channel re-read based upon one or more co-channel interference criteria is initiated. The synchronization channel re-read is adapted to determine if one or more neighbouring cells that are broadcasting on the same frequency as the broadcast control channel frequency of the current serving cell would be better than the current serving cell.Type: ApplicationFiled: December 18, 2013Publication date: June 26, 2014Applicant: BROADCOM CORPORATIONInventors: Carsten JUNCKER, Harri Aatos JOKINEN
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Publication number: 20140176482Abstract: An interference tolerant capacitive touch sensor readout circuit having improved power and area efficiency is disclosed. Interference rejection for the capacitive touch sensing system is realized by transferring charge between a capacitive touch sensor and the readout circuit at frequencies outside bands where a level of interference is unacceptable. Improved power and area efficient come from the simplicity of the readout circuit which comprises a switched-capacitor integrator, a comparator, a digital accumulator and number of switches for driving a touch sensor and a capacitive feedback loop. The readout circuit is capable of interfacing with both self and mutual capacitance sensor to achieve compatibility with a larger collection of sensors and provides additional sensing and diagnostic functionalities.Type: ApplicationFiled: January 30, 2013Publication date: June 26, 2014Applicant: BROADCOM CORPORATIONInventors: Guo Wen Wei, Tom W. Kwan
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Publication number: 20140177603Abstract: A coexistence signaling scheme for radio communications is described. In one embodiment, a method for coexistence signaling includes establishing first communications and second communications with separate access points or base stations. The method further includes determining protocol timings of the first and second communications. Based on various communications parameters, protocol timings, and identified interference conditions, the method includes generating one or more priority signals to manage the first and second communications. According to certain aspects, overlapping channel conditions can be avoided while maintaining acceptable communications data throughput.Type: ApplicationFiled: February 7, 2013Publication date: June 26, 2014Applicant: BROADCOM CORPORATIONInventors: Neeraj Poojary, Prasanna Desai, Sudhir Prajapati, Sachin Gupta, Pawan Kumar, Gabriel Desjardins, Sanjay Saha
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Publication number: 20140176359Abstract: An analog-to-digital converter (ADC) includes reference charge cancellation features to at least partially offset a voltage distortion on a bypass capacitor of a reference buffer due to a voltage reference hit taken by a switched capacitor bank with which the bypass capacitor is connected. The charge cancellation may be configured in logic to be input signal dependent because different resolved bits or transitions between resolved bits may cause different amounts of voltage reference hits. By adjusting the bypass capacitor in response to each of at least some of the reference hits while resolving a word of bits, the reference voltage signal provided by the bypass capacitor undergoes far less settling, remaining more stable and linear for a more accurate reference voltage. Furthermore, a smaller capacitor may be used for the bypass capacitor, reducing power consumption and area on chip.Type: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Applicant: BROADCOM CORPORATIONInventors: Jason Hu, Xinyu Yu, Jing Yang, Sumant Ranganathan
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Publication number: 20140177653Abstract: Embodiments are directed to timing synchronization between network nodes, such as, for example, based upon IEEE 1588. Example embodiments provide for a node in a IEEE 1588 message exchange to obtain the T3 timestamp without using its host interface to access the physical layer. Methods and systems include aspects of determining an egress timestamp corresponding to a time at which a first packet is transmitted from a physical interface of a first network entity on to a network media, storing the egress timestamp in a memory associated with the physical interface, receiving a second packet at the physical interface, retrieving the egress timestamp from the memory based upon the second packet, and updating the second packet with the retrieved egress timestamp. Embodiments may further include providing the updated second packet for protocol processing in the first network entity, or transmitting the updated second packet from the physical interface on to a network media.Type: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Applicant: Broadcom CorporationInventor: Jeffrey TZENG
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Publication number: 20140181985Abstract: An electronic device may include multiple modules that share access to a common memory. The electronic device may include content access logic that selective allows a module to access target data in the memory. When writing data into the memory, the content access logic may determine an access restriction associated with the write data, where the access restriction specifies one or more modules that can access the write data. The content access logic may scramble the write date using an access key, and configure the access key such that only authorized modules can use the access key when retrieving data from the memory. The content access logic may then store the scrambled data in the memory.Type: ApplicationFiled: December 21, 2012Publication date: June 26, 2014Applicant: Broadcom CorporationInventors: Rajesh Shankarrao Mamidwar, Francis Cheung
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System and Method for Using Energy Efficient Ethernet to Control Energy Efficiencies in Lower Layers
Publication number: 20140181548Abstract: A system and method for using energy-efficient Ethernet to control energy efficiency in lower layers. In one example, an energy-efficiency control policy in a first Ethernet device can be configured to determine a need for transitioning of at least a part of the first Ethernet device into an energy saving sate. Based on such a determination, an energy-efficiency control signal can be transmitted from the first Ethernet device to a first non-Ethernet device. The receipt of the energy-efficiency control signal by the first non-Ethernet device is used to initiate a transition by the first non-Ethernet device into an energy saving state, which in turn may initiate a transition by downstream non-Ethernet devices into an energy saving state. This process creates a single unified energy-efficiency policy domain.Type: ApplicationFiled: March 4, 2013Publication date: June 26, 2014Applicant: BROADCOM CORPORATIONInventors: Lowell David Lamb, Wael William Diab -
Publication number: 20140177557Abstract: In some examples, the method, apparatus and computer program product as described herein is configured for cell Discontinuous Transmission. In this regard, a method is provided that includes receiving an indication of a discovery of a cell by a communications device. The method of this embodiment may also include determining the cell based on the indication. The method of this embodiment may also include causing the cell to transition to an activated state from a dormant state.Type: ApplicationFiled: December 19, 2013Publication date: June 26, 2014Applicant: Broadcom CorporationInventors: Gilles CHARBIT, Erlin ZENG
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Publication number: 20140181774Abstract: A standard cell library for designing integrated circuits is provided. In some aspects, the standard cell library includes a plurality of standard cells having a cell height that is a non-integer multiple of a wiring pitch of routing tracks associated with the standard cell library. The standard cell library further includes a plurality of landing pins for connecting to the routing tracks arranged in the plurality of standard cells, wherein each of the plurality of landing pins is extended by half of the wiring pitch in opposite directions orthogonal to an orientation of the routing tracks.Type: ApplicationFiled: December 21, 2012Publication date: June 26, 2014Applicant: BROADCOM CORPORATIONInventors: Mehdi HATAMIAN, Paul Penzes
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Publication number: 20140178036Abstract: Disclosed are various embodiments that facilitate recording to a storage medium in a personal video recorder (PVR) system. In one embodiment, a transport stream is received. The transport stream is stored into a memory. An index table is generated that provides information for locating particular frames recorded in the memory.Type: ApplicationFiled: February 28, 2014Publication date: June 26, 2014Applicant: BROADCOM CORPORATIONInventors: Jason Demas, Marcus Kellerman, Sandeep Bhatia, Srinivasa Mogathala Prabhakara Reddy, Xuemin Chen, Vijayanand Aralaguppe, Girish Raghunath Hulmani, Pramod Chandraiah, Ghanashyam Ananthamurthy Bailwal
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Publication number: 20140177750Abstract: A communication device is configured to perform symbol mapping of bits to generate modulation symbols using one or more modulations. The device may employ a blended modulation composed of bit labels or symbols having different numbers of bits per symbol and different modulations. For example, the device may symbol map bit labels/symbols having first number of bits per symbol to first modulation, and the device may symbol map labels/symbols having second number of bits per symbol to second modulation. The device may be configured to perform forward error correction (FEC) or error correction code (ECC) and coding of information bits to generate coded bits that subsequently undergo symbol mapping. The device may be configured to operate based on different operational modes based on substantially uniform steps of rates, or bits per symbol, and energy per bit or symbol to noise spectral density ratio (Eb/N0 or Es/N0).Type: ApplicationFiled: November 5, 2013Publication date: June 26, 2014Applicant: BROADCOM CORPORATIONInventors: Thomas J. Kolze, Bruce J. Currivan
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Publication number: 20140177363Abstract: Embodiments described herein provide enhanced testing of devices. For example, in an embodiment, an interposer for testing devices is provided. The interposer includes a substrate, a first plurality of connection elements located on a surface of the substrate, and a memory device electrically coupled to the first plurality of connection elements through the substrate. The first plurality of connection elements are configured to mate with a second plurality of connection elements located on a device under test. The memory device is configured to store information received from the device under test and to output stored information to the device under test.Type: ApplicationFiled: December 26, 2012Publication date: June 26, 2014Applicant: Broadcom CorporationInventors: Baruyr MIRICAN, Tyler Tolman, Jeffrey Brueggeman
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Publication number: 20140177610Abstract: Disclosed are method and system for Ethernet media conversion supporting high-speed wireless access points. The method includes receiving at each of a plurality of input-side Ethernet modules in a media converter, a plurality of input data streams at a first data rate. In the media converter each of the plurality of input data streams may be aggregated into an output data stream at a second data rate. The output data stream may then be transmitted at the second data rate from an output-side Ethernet module in the media converter. Each of the input data streams may be received from an Ethernet switch, and the output data stream may be transmitted to a wireless access point. In one exemplary implementation, each of the input-side Ethernet modules may include a 1 G PHY, while the output-side Ethernet module may include one or both of a 2.5 G PHY and a 4 G PHY.Type: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Applicant: Broadcom CorporationInventors: Alan Kwentus, Hassaan Aslam, Ali Abaye