Patents Assigned to Broadcom
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Publication number: 20150024791Abstract: A wireless communication device is disclosed that is capable of performing efficient network searching. Specifically, by utilizing its location information and accessing stored cell information, the device can streamline searching. Further, if a full search is to be performed, the device receives information from multiple radio access technologies together, and processes the received information digitally in order to search the individual radio access technologies. In addition, the device is capable of performing efficient 4G searches by setting its RF module to capture information of multiple raster points simultaneously within a search band, and shifting the search band so as not to duplicatively search raster points.Type: ApplicationFiled: October 10, 2014Publication date: January 22, 2015Applicant: Broadcom CorporationInventors: C. Ashok KUMAR REDDY, Abir MOOKHERJEE, Shashidhar VUMMINTALA
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Publication number: 20150026361Abstract: A network device performs ingress based headroom buffering. The network device may be configured as an output queue switch and include a main packet buffer that stores packet data according to a destination egress port. The network device may implement one or more ingress buffers associated with ingress data ports in the network device. The ingress buffers may be separate from the main packet buffer. The network device may identify a flow control condition triggered by an ingress data port, such as when an amount of data stored in the main packet buffer received through the ingress data port exceeds a fill threshold. In response, the network device may send a flow control message to a link partner to cease sending network traffic through the ingress data port. The network device may store in-flight data from the link partner in an ingress buffer instead of the main packet buffer.Type: ApplicationFiled: September 27, 2013Publication date: January 22, 2015Applicant: Broadcom CorporationInventors: William Brad Matthews, Bruce Hui Kwan
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Publication number: 20150023449Abstract: A wireless communication device includes a communication interface and a processor and is configured to generate a preamble of an OFDM packet that includes signal fields (SIGs) that specify first characteristics of a remainder of the OFDM packet that follows the SIG fields. A first at least one SIG includes information to specify second characteristics of a second at least one SIG that follows the first at least one SIG. The wireless communication device then transmits the OFDM packet to another wireless communication device. The second characteristics specifies any number of characteristics including any one or more of a size of a GI between the first at least one SIG and the second at least one SIG, a MCS used to generate the second at least one SIG, a length of the second at least one SIG, or a number of OFDM symbols of the second at least one SIG.Type: ApplicationFiled: October 9, 2014Publication date: January 22, 2015Applicant: BROADCOM CORPORATIONInventors: Ron Porat, Nihar Jindal
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Publication number: 20150022239Abstract: A system includes an inverter element to gate forward current flow from a first signal source, and a reverse current inhibition element to block reverse current flow towards the first signal source from a second signal source.Type: ApplicationFiled: August 2, 2013Publication date: January 22, 2015Applicant: Broadcom CorporationInventor: Dario Soltesz
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Publication number: 20150024742Abstract: User equipment (UE) includes an architecture for locating femtocells. The architecture implements a phased search approach. The phased search helps the UE find the correct femtocells in a time and power efficient manner, by performing the search in a way that matches the likely changes to femtocell configurations.Type: ApplicationFiled: November 25, 2013Publication date: January 22, 2015Applicant: Broadcom CorporationInventors: Sudip Alexei Gupta, Abhishek Pandit
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Publication number: 20150023660Abstract: A system, method and apparatus for power saving using burst-mode transmission over point-to-point physical connections. In one embodiment, a physical layer device (PHY) is provided that includes a data detector that is configured to generate a first control signal upon receipt of a non-idle code group over an interface between the PHY and a media access control (MAC) device and to generate a second control signal when all data received from the MAC device has been transmitted by the physical layer device. The PHY also includes a laser for transmission of data over an optical network cable, the laser being configured to perform a first transition from an off state to an on state based on the first control signal, and to perform a second transition from the on state back to the off state based on the second control signal.Type: ApplicationFiled: August 27, 2013Publication date: January 22, 2015Applicant: Broadcom CorporationInventors: Glen Kramer, Lowell David Lamb, Jaroslaw Wojtowicz, Ryan Edgar Hirth
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Publication number: 20150024759Abstract: User equipment (UE) includes an architecture for handling femtocell fingerprints, and searching for femtocells. The architecture may control the frequencies for which the femtocell search is performed in various manners. For example, the architecture may schedule a round-robin list of femtocell frequencies for measurement, and may reduce the search space according to the frequency bands actually in use in the region in which the UE is located, according to whether or not reselection timers are running for specific frequencies, or in other ways.Type: ApplicationFiled: November 25, 2013Publication date: January 22, 2015Applicant: Broadcom CorporationInventors: Romain Marie Pierre Raymond Garcin, Sudip Alexei Gupta, Abhishek Pandit, Yongqian Wang, Yuan Liu, Sethuraman Gurumoorthy, Sridhar Prakasam, Sultan Budhwani
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Publication number: 20150024743Abstract: User equipment (UE) obtains system information using a foreground or background process. The system information may include cell information that distinguishes femtocells from macrocells. Given this cell information, the UE may avoid tuning to or attempting to connect to cell types that the UE does not support. For instance, the UE may avoid connection attempts to femtocells, when the UE does not support femtocell connections.Type: ApplicationFiled: December 18, 2013Publication date: January 22, 2015Applicant: Broadcom CorporationInventors: Dong Zheng, Vikram Shantveer Mhetre, Aniruddha Subhash Diwan, Rishi Ranjan
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Patent number: 8937357Abstract: According to one embodiment, a one-time programmable (OTP) semiconductor device includes a programming dielectric under a patterned electrode and over an implant region, where the programming dielectric forms a programming region of the OTP semiconductor device. The OTP semiconductor device further includes an isolation region laterally separating the programming dielectric from a coupled semiconductor structure, where the isolation region can be used in conjunction with the patterned electrode and the implant region to protect the coupled semiconductor structure. In one embodiment, the programming dielectric comprises a gate dielectric. In another embodiment, the electrode and implant regions are doped to be electrochemically similar.Type: GrantFiled: March 1, 2010Date of Patent: January 20, 2015Assignee: Broadcom CorporationInventors: Frank Hui, Xiangdong Chen
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Patent number: 8938239Abstract: A wireless communication device is disclosed that is capable of performing efficient handoffs in order to maximize connection time with either a serving or target base station. The wireless communication device performs measurements of only intra-frequency base stations to avoid retuning its radio module. Based on this information, as well as stored information relating to nearby base stations, the serving base station is able to estimate a position of the wireless communication device and compare the estimated position to positions of the known base stations in order to make a handoff decision. In addition, by storing information during measurement or handoff preparation, the device is capable of skipping handoff steps, immediately return to the serving base station after handoff failure, and/or perform streamlined PLMN searching.Type: GrantFiled: December 29, 2011Date of Patent: January 20, 2015Assignee: Broadcom CorporationInventors: Arzad Alam Kherani, Soumen Chakraborty, Erik Stauffer, Manish Airy, Rishi Ranjan, Phani Kiran Boddapati, C. Ashok Kumar Reddy
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Patent number: 8938032Abstract: A system for implementing an orthogonal frequency division multiplexing scheme and providing an improved range extension. The system includes a transmitter for transmitting data to a receiver. The transmitter includes a symbol mapper for generating a symbol for each of a plurality of subcarriers and a spreading module for spreading out the symbol on each of the plurality of subcarriers by using a direct sequence spread spectrum. The symbol on each of the plurality of subcarriers is spread by multiplying the symbol by predefined length sequences. The receiver includes a de-spreader module for de-spreading the symbols on each of the plurality of subcarriers. The de-spreader module includes a simple correlator receiver for obtaining maximum detection. The correlator produces an output sequence of a same length as an input sequence and the de-spreader module uses a point of maximum correlation on the output sequence to obtain a recovered symbol.Type: GrantFiled: January 21, 2013Date of Patent: January 20, 2015Assignee: Broadcom CorporationInventor: Jason A. Trachewsky
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Patent number: 8937606Abstract: Control circuitry for a touch panel includes a touch panel interface, a memory comprising scanning logic, and a controller in communication with the memory and the touch panel interface. The controller is operable, when the scanning logic is executed, to energize a first and a second row in the touch panel simultaneously, a first time; obtain a first signal measurement along a column intersecting the first and second rows; energize the first and the second row in the touch panel simultaneously, a second time; obtain a second signal measurement along the column; and determine a first pixel value and a second pixel value along the column from the first signal measurement and the second signal measurement.Type: GrantFiled: March 8, 2012Date of Patent: January 20, 2015Assignee: Broadcom CorporationInventors: David A. Sobel, Sumant Ranganathan, John S. Walley
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Patent number: 8937956Abstract: A network device receives multiple protocol data units (PDUs), or packets, and initiates aggregation of an intended number of the packets to form a transmission block. During the aggregation process, the device receives a priority PDU, or packet, and in response to receiving the priority PDU, terminates the aggregation process, either permanently or temporarily, even though the number of packets aggregated prior to receiving the priority packet is less than the number of packets intended to be included in the transmission block. The device releases the priority packet for transmission out of turn, ahead of the already aggregated packets. The priority packet can be released individually, with the aggregation being resumed after release of the priority packet, or the priority packet can be pre-pended to the already aggregated block of packets and the entire block released with a priority assigned according to the priority of the priority packet.Type: GrantFiled: December 21, 2011Date of Patent: January 20, 2015Assignee: Broadcom CorporationInventors: Ragu (Raghunatha) Kondareddy, Yasantha N. Rajakarunanayake, James F. Dougherty, III
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Patent number: 8938663Abstract: A modem architecture that supports the application of joint source channel decoding (JSCD). The modem architecture includes two channel decoders, one of which is modified to provide improved signal quality. The modem architecture further includes transparent network layers that enable the passage of data from one layer to another layer. For example, the modem architecture enables the passage soft bits, when available, from a physical layer to an application layer. The soft bits may be utilized for JSCD, packet loss concealment, or other applications. The modem architecture enables encryption and decryption of data to incorporate extrinsic information in operating JSCD.Type: GrantFiled: January 24, 2013Date of Patent: January 20, 2015Assignee: Broadcom CorporationInventor: Robert W. Zopf
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Publication number: 20150016319Abstract: Aspects of a method and system for extended range Ethernet link discovery signaling are provided. A local PHY may detect of one or more active twisted-pair wires in a remote PHY in extended range applications. The local PHY may determine whether to operate as a master or slave based on detected pairs. When operating as a master device, the local PHY may correct twisted-pair wire swap information received from the remote PHY before communicating an encoded link length value to the remote PHY. When operating as a slave device, the local PHY may transmit encoded twisted-pair wire swap information to the remote PHY before recovering a link length value communicated from the remote PHY. The local PHY may communicate supported operating modes based on the link length value to the remote PHY. Moreover, the local PHY may enable establishing a common full duplex operating mode with the remote PHY.Type: ApplicationFiled: September 30, 2014Publication date: January 15, 2015Applicant: Broadcom CorporationInventors: Scott POWELL, Kuang-Chou Chang, Bruce Conway
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Publication number: 20150016630Abstract: A device for grounding pop-click noise may include an output block configured to generate an output signal at an output node. A switch circuit coupled to the output node may be configured to be operable to couple the output node to a ground potential. The switch circuit may include a first and a second transistor. A drain, a source, and a gate node of the first transistor may be coupled to the output node, a drain node of the second transistor, and a first control signal, respectively. A drain, a source, and a gate node of the second transistor may be coupled to a source node of the first transistor, the ground potential, and a second control signal, respectively. The first and the second control signals may operate the switch circuit to couple the output node to the ground potential during a pre-determined period associated with the pop-click noise.Type: ApplicationFiled: September 6, 2013Publication date: January 15, 2015Applicant: BROADCOM CORPORATIONInventors: Yang XU, Dale George Frederick Stubbs, Khaled Mahmoud Abdelfattah Aly
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Publication number: 20150016449Abstract: A method, system and apparatus for an OpenFlow hybrid architecture network device. In one embodiment, a hybrid approach is enabled by a network device that brackets an OpenFlow forwarding plane with conventional forwarding planes. Interfaces between the OpenFlow forwarding plane is provided via logical ports that pass packets along with associated metadata.Type: ApplicationFiled: April 30, 2014Publication date: January 15, 2015Applicant: Broadcom CorporationInventor: Joseph John Tardo
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Publication number: 20150016821Abstract: A content distribution system may include a headend server and media converters, the headend server being configured to distribute content items to user devices via the media converters and gateway devices. Each of the media converters may include a media converter cache and may be coupled to the headend server and a subset of the gateway devices, where each of the user devices is communicatively coupled to one of the gateway devices. The headend server may be further configured to determine one of the content items that is expected to be requested by a group of the user devices, determine one of the media converters that is coupled, via the subset of the gateway devices, to a largest number of user devices in the group of the user devices, and coordinate storing the one of the content items in the media converter cache of the one of the media converters.Type: ApplicationFiled: July 22, 2013Publication date: January 15, 2015Applicant: Broadcom CorporationInventors: Yong LI, Xuemin Chen
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Publication number: 20150016332Abstract: Management frame map directed operational parameters within multiple user, multiple access, and/or MIMO wireless communications. A management frame map may be generated within and transmitted from a first wireless communication device to a group of other wireless communication devices. Thereafter, certain subsequently transmitted packets may be analyzed and processed by the receiving wireless communication devices based on that earlier received management frame map. One or more operational parameters are determined for a subsequently transmitted packet based on the previously received management frame map. The operational parameters govern the manner in which at least a portion of the subsequently transmitted packet is processed.Type: ApplicationFiled: September 29, 2014Publication date: January 15, 2015Applicant: BROADCOM CORPORATIONInventors: Matthew James Fischer, Vinko Erceg, Joonsuk Kim, Joseph Paul Lauer, Peiman Amini
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Publication number: 20150016455Abstract: Systems, devices, and methods of implementing 50 Gb/s Ethernet using serializer/deserializer lanes are disclosed. One such device includes circuitry operable to provide a media access control (MAC) interface. The MAC interface is associated with a port having a 50 Gb/s link rate. The device also includes circuitry operable to generate Ethernet frames from data received at the MAC interface and circuitry operable to distribute the Ethernet frames across a group of serial/deserializer (SERDES) lanes associated with the port, the group having size N. The device also includes circuitry operable to transmit the distributed Ethernet frames on each of the SERDES lanes at a 50/N Gb/s rate.Type: ApplicationFiled: September 30, 2014Publication date: January 15, 2015Applicant: Broadcom CorporationInventors: Burhan MASOOD, Howard Frazier