Patents Assigned to Broadcom
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Patent number: 8776090Abstract: A device may abstract access to hardware resources in the device to a single operating system (OS) running in the device utilizing an abstraction layer and a software partition. The abstraction layer and the software partition may enable virtualizing the hardware resources during interfacing between the single OS and the hardware resources, such that the actual characteristics and/or number of the hardware resources may be abstracted. The abstraction layer may comprise a hypervisor, which may be optimized to support network abstraction based operations. The software partition may enable managing configuration and/or use of the hardware resources via the abstraction layer. The hardware resources may comprise networking resources. Accordingly, operations of a plurality of virtual drivers within the OS corresponding to each of one or more of the plurality of hardware resources may be supported. Data transfers between the OS and the hardware resources may be performed via the software partition.Type: GrantFiled: February 17, 2010Date of Patent: July 8, 2014Assignee: Broadcom CorporationInventor: Uri Elzur
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Patent number: 8773587Abstract: At least a method and a system are described for providing frame rate upconversion by way of using “short side” or bidirectional interpolation in generating interpolated frames. In a representative embodiment, the method may comprise receiving a first frame of video corresponding to a first frame time and a second frame of the video corresponding to a second frame time, computing a first absolute difference between the first frame time and an interpolated frame time wherein the interpolated frame time temporally is located between the first frame time and the second frame time. The method further comprises using a first motion vector field and the first frame to compute a third frame at the interpolated frame time. The method further comprises outputting the third frame as the interpolated frame at the interpolated frame time if the first absolute difference is less than or equal to a first threshold value.Type: GrantFiled: July 15, 2013Date of Patent: July 8, 2014Assignee: Broadcom CorporationInventors: Kathleen Burns, Kenneth Edward Vavreck, Gerald Michael Roletter, Larry Alan Pearlstein
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Patent number: 8774327Abstract: The present invention provides adjusting of a radio frequency (RF) receiver that includes processing that begins by enabling an initial setting of the RF receiver, wherein the initial setting is based on a bandwidth of a channel of a plurality of channels. The processing continues by receiving an RF signal containing a preamble of a frame via one of the plurality of channels. The processing continues by converting the RF signal to a baseband signal based on the initial setting. The processing continues by determining channel type of the one of the plurality of channels based on the baseband signal. The processing continues by determining whether the channel type corresponds to the bandwidth of the initial setting. The processing continues by, when the channel type does not correspond to the bandwidth of the initial setting, adjusting setting of the RF receiver based on the channel type.Type: GrantFiled: March 15, 2005Date of Patent: July 8, 2014Assignee: Broadcom CorporationInventors: Arya Reza Behzad, Michael S. Kappes, Jason A. Trachewsky, Christopher J. Hansen
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Patent number: 8774399Abstract: A telecommunication system including a speakerphone provides a coupled signal path, including a microphone, configured to sense an incoming audio signal and an echo signal and generate a coupled signal. The echo signal includes non-linear distortion generated by a speaker of the speakerphone. An echo signal path, including an amplifier, is configured to sense the echo signal and generate an echo reference signal. The echo reference signal includes the non-linear distortion. An acoustic echo canceller is configured to receive the coupled signal from the coupled signal path, to receive the echo reference signal from the echo signal path, and to cancel out the non-linear distortion included in the coupled signal based on the non-linear distortion included in the echo reference signal.Type: GrantFiled: December 27, 2011Date of Patent: July 8, 2014Assignee: Broadcom CorporationInventors: Prakash C. Khanduri, Bosen Zhao
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Patent number: 8774300Abstract: Signal processing under attenuated transmission conditions. Within an orthogonal signal space, the number of orthogonal signals that are used to transmit information from a transmitter to a receiver is reduced and the transmitted power of each of the now remaining orthogonal signals is modified; this may involve increasing the power of all of the remaining orthogonal signals equally or alternatively modifying them individually. The same modulation used before the reduction may also be used afterwards; within communication systems having multiple transmitter-receiver paths, this will ensure that the communication system's throughput and efficiency will remain unchanged even when one (or more) transmitter-receiver paths are highly attenuated. In addition, robust mode operation is provided for ranging and registering of transmitter devices when entering the communication system.Type: GrantFiled: June 21, 2013Date of Patent: July 8, 2014Assignee: Broadcom CorporationInventors: Bruce J. Currivan, Thomas J. Kolze, Daniel H. Howard, Gottfried Ungerboeck
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Patent number: 8775670Abstract: Methods and systems for controlling network traffic in a network are disclosed herein and may include monitoring network traffic characteristics for a plurality of communication channels in a home network, by at least one processor within the home network. The at least one processor may re-route network traffic for at least a portion of the plurality of communication channels in the home network, based on analysis by the at least one processor of at least the monitored network traffic characteristics. Network traffic can be estimated for at least a portion of the plurality of communication channels in the home network by the at least one processor within the home network, based on the monitored network traffic characteristics. The at least one processor may re-route network traffic for a portion of the plurality of communication channels in the home network, based on the estimated network traffic.Type: GrantFiled: October 24, 2011Date of Patent: July 8, 2014Assignee: Broadcom CorporationInventor: Stephen R. Palm
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Patent number: 8774740Abstract: Aspects of a system for improving efficiency over power control for linear and class AB power amplifiers may include a current source circuit that enables determination of a bias current level for a PA circuit within an IC die based on an amplitude of an input modulation signal. The PA circuit may enable generation of an output signal based on a differential input signal and the input modulation signal to the current source circuit. A generated bias voltage may be applied to a transformer external to the IC die, but internal to an IC package containing the IC die and/or a circuit board containing the IC package. One or more amplifier bias voltage levels may be applied to the PA circuit wherein the amplifier bias voltage levels may be derived from the generated bias voltage level and/or the determined bias current level.Type: GrantFiled: June 19, 2013Date of Patent: July 8, 2014Assignee: Broadcom CorporationInventor: Ahmadreza Rofougaran
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Patent number: 8774836Abstract: A servicing communication device may receive a subset of a location reference database that is maintained by a plurality of location servers, and may provide location related data to a mobile device that is communicatively coupled to the servicing communication device based on the received subset. The servicing communication device may determine capabilities and/or requirements of the mobile device, and may generate the location related data based on that determination. The servicing communication device may determine attributes and/or parameters that may affect determination of the subset of the location reference database. The subset of location reference database may be requested based on the determined attributes and/or parameters. The attributes and/or parameters may comprise a location of the servicing communication device.Type: GrantFiled: March 26, 2010Date of Patent: July 8, 2014Assignee: Broadcom CorporationInventors: Charles Abraham, Mark Buer, David Garrett, Jeyhan Karaoguz, David Lundgren, David Murray
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Patent number: 8774332Abstract: Based on tracked amplitude modulation (e.g., which may be hum modulation), compensation for amplitude modulation is applied across all orthogonal signal components of a non-time based orthogonal coded signal. Some examples of such non-time based orthogonal coded signals include an orthogonal frequency division multiplexing (OFDM) signal, a synchronous code division multiple access (S-CDMA) signal, or a code division multiple access (CDMA) signal, etc. The compensation may be applied to the signal across multiple frames, on a frame by frame basis, or intra-frame (i.e., changing and compensating differently within a frame). This compensation for amplitude modulation may be applied in conjunction with adaptive equalization in which different filter taps are applied to each respective orthogonal signal component of the signal. Also, automatic gain control (AGC) may be performed (e.g., before digital sampling) of a received signal in conjunction with the amplitude modulation compensation.Type: GrantFiled: December 19, 2008Date of Patent: July 8, 2014Assignee: Broadcom CorporationInventors: Thomas J. Kolze, Bruce J. Currivan
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Publication number: 20140185989Abstract: A connector includes a connector interface. A cable housing covers the connector interface and a cable connects with the connector interface. A passive component is positioned within the cable housing, the passive component being connected with the connector interface and the cable.Type: ApplicationFiled: March 5, 2013Publication date: July 3, 2014Applicant: Broadcom CorporationInventors: William Calvin Woodruff, Chung Ming Tu
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Publication number: 20140184152Abstract: An apparatus and method are disclosed to control the mutual coupling between wireless power transfer (WPT) enabled devices. Wireless power transfer is best achieved when both the transmitting and receiving device are tuned to substantially the same frequency. Because WPT-enabled devices are coupled to one another during WPT, tuning one WPT-enabled device can cause both devices to converge to a resonance together. Furthermore, a WPT enabled receiving device can be intentionally detuned to avoid coupling excessive power from a WPT-enabled transmitter device. These concepts can be extended to WPT-enabled device pairs that each has WPT transmission and reception qualities. When multiple WPT-enabled devices interact, tuning information can be stored in one or both of the devices to make the configuration procedure for subsequent WPT interactions more efficient. Various systems are presented to control the mutual coupling between WPT-enabled devices to improve the WPT.Type: ApplicationFiled: March 15, 2013Publication date: July 3, 2014Applicant: Broadcom CorporationInventors: Reinier Van Der LEE, John Walley
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Publication number: 20140188885Abstract: Methods, systems, and computer readable storage medium embodiments for hashing with improved utilization and power efficiency are disclosed. Some embodiments include inserting a key in a selected bucket in accordance with an bucket identifier generated by a hash function, wherein the selected bucket is one of a plurality of buckets of a hash table configured in at least one memory, determining respective unique bit strings based upon corresponding bit positions for a plurality of keys in the selected bucket including the inserted key, inserting the respective unique bit strings in a table location corresponding to the bucket identifier, wherein the table location is one of a plurality of table locations in at least one control table configured in the at least one memory. Other embodiments include lookup operations in a hash table.Type: ApplicationFiled: December 27, 2012Publication date: July 3, 2014Applicant: Broadcom CorporationInventors: Abhay Kulkarni, Bhupesh Ramchandani
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Publication number: 20140188466Abstract: A system and method is described that improves the intelligibility of a far-end telephone speech signal to a user of a telephony device in the presence of near-end background noise. As described herein, the system and method improves the intelligibility of the far-end telephone speech signal in a manner that does not require user input and that minimizes the distortion of the far-end telephone speech signal. The system is integrated with an acoustic echo canceller and shares information therewith.Type: ApplicationFiled: December 31, 2013Publication date: July 3, 2014Applicant: BROADCOM CORPORATIONInventors: Wilfrid LeBlanc, Jes Thyssen, Juin-Hwey Chen
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Publication number: 20140185628Abstract: A method for managing data traffic operating on a deadline is provided. The method includes receiving, on an intermediate node, a packet having one or more traffic characteristics. The method also includes evaluating, on the intermediate node, the one or more traffic characteristics to determine a priority of the packet. The method also includes selecting one of multiple queues on the intermediate node based on the determined priority. The method also includes processing, on the intermediate node, the packet based on the determined priority. The method also includes enqueuing the processed packet into the selected queue. The method further includes outputting the queued packet from the selected queue.Type: ApplicationFiled: February 5, 2013Publication date: July 3, 2014Applicant: BROADCOM CORPORATIONInventors: Brad MATTHEWS, Bruce KWAN, Puneet AGARWAL
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Publication number: 20140185612Abstract: A universal network interface controller (UNIC) is provided for interfacing a host computer to a switch fabric, a packet network, or both. The UNIC includes encapsulation logic configured to encapsulate a CBP communication for transmission as switch fabric data on the switch fabric. Finally, the UNIC includes transmit logic configured to transmit the encapsulated CBP communication to the remote CBP device using the switch fabric.Type: ApplicationFiled: December 31, 2012Publication date: July 3, 2014Applicant: Broadcom CorporationInventors: Nicholas Ilyadis, Ariel Hendel, Karagada Ramarao Kishore, Gregory John Scherer
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Publication number: 20140183628Abstract: A semiconductor device includes a first well and a second well implanted in a semiconductor substrate. The semiconductor device further includes a raised drain structure above and in contact with the second well and separate from the gate structure. The raised drain structure includes a drain connection point above the surface of the second well.Type: ApplicationFiled: December 27, 2012Publication date: July 3, 2014Applicant: BROADCOM CORPORATIONInventor: Akira Ito
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Publication number: 20140185659Abstract: A DSL transmitter and receiver are disclosed that are capable of accurately measuring crosstalk in G.vector-compliant DSL lines resulting from a legacy line. During crosstalk measurement, the legacy line can be placed in a showtime mode. Once in showtime mode, a data signal designated for the legacy line is reduced in power spectrum density and/or spectrum to reduce its effects on crosstalk measurements. An O-P-Vector-1 signal is then superposed on the reduced data signal, and the resulting test signal is transmitted over the legacy line while sync signals are transmitted over neighboring G.vector lines. The receiver can then accurately measure the crosstalk on the neighboring lines, and report back to the transceiver for adjustments. A similar configuration can be performed in a diagnostic mode of the legacy line.Type: ApplicationFiled: December 28, 2012Publication date: July 3, 2014Applicant: Broadcom CorporationInventors: Raphael Paul Cassiers, Miguel Peeters
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Publication number: 20140183976Abstract: Aspects of a method and system for a connection system operable to sink and source supply power are provided. In this regard, one or more circuits within a connector that resides in a networking enabled device may be operable to determine whether the networking enabled device is to operate as a powered device or as a power supplying device. Based on a result of the determination, the one or more circuits may be operable to couple power pins of the connector to either a first power rail of the networking enabled device or a second power rail of the networking enabled device. The determination of whether the networking enabled device is to operate as a powered device or as a power supplying device may be based on a voltage on a sense pin of the connector and/or based on mechanical characteristics of the connector.Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: Broadcom CorporationInventors: Wael William Diab, Michael Johas Teener
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Publication number: 20140185704Abstract: An outdoor communication unit (ODU) for implementation within a dual channel microwave backhaul system, is provided. The ODU includes an radio frequency (RF) module, having digital capabilities, which is configured to utilize the digital capabilities to perform adaptive adjustments to correct errors in data in a digital domain, a conversion block configured to convert the data between an analog domain and the digital domain, and a processing module configured to adaptively adjust a characteristic of the data and a characteristic of a dual channel wireless link, and to facilitate a transmission of the data over the dual channel wireless link by performing mathematical manipulation techniques.Type: ApplicationFiled: January 3, 2013Publication date: July 3, 2014Applicant: Broadcom CorporationInventors: Kobi STURKOVICH, Igal Kushnir
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Publication number: 20140186053Abstract: Methods, systems, and computer program products are provided for inserting the packet into a tail of a linked list buffer, and the linked list buffer includes a plurality of Buffer Descriptors (BD), a HEAD pointer pointing to a null Buffer Descriptor (NullBD) and a NULLBD pointer. The NULLBD pointer is switched to point to the NullBD and the HEAD pointer to point to a valid BD which represents a memory address of payload data in the packet to be transmitted. Upon transmission of the packet, the HEAD pointer is converted to point to the NullBD and the NULLBD pointer to point to the valid BD. The valid BD pointed by the NULLBD pointer is finally transferred to a free linked list buffer so that the NULLBD pointer points to no memory address.Type: ApplicationFiled: December 31, 2012Publication date: July 3, 2014Applicant: Broadcom CorporationInventors: Boaz SHAHAR, Oren Wolach, David Avishai