Patents Assigned to Broadcom
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Publication number: 20150312077Abstract: A wireless communication device (alternatively, device) a communication interface and a processor, among other possible circuitries, components, elements, etc. to support communications with other wireless communication device(s) and to generate and process signals for such communications. A device is configured to generate various orthogonal frequency division multiplexing (OHM) and/or orthogonal frequency division multiple access (OFDMA) packets (e.g., frames, signals, etc.) that are based on any of group of set of OFDM/A frame structures. Across the various OFDM/A frame structures, the ratio of pilot sub-carriers to data sub-carriers across resource units (RUs) decreases as the total number of sub-carriers across the RUs increases. In addition, some of the OFDM/A frame structures include different total number of sub-carriers yet same number of pilot sub-carriers. The device is configured to perform adaptation among and between the various OFDM/A frame structures based on any one or more considerations.Type: ApplicationFiled: June 11, 2015Publication date: October 29, 2015Applicant: BROADCOM CORPORATIONInventor: Ron Porat
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Publication number: 20150309796Abstract: A processor including a register file having a plurality of registers, and configured for out-of-order instruction execution, further includes a renamer unit that produces generation numbers that are associated with register file addresses to provide a renamed version of a register that is temporally offset from an existing version of that register rather than assigning a non-programmer-visible physical register as the renamed register.Type: ApplicationFiled: October 31, 2014Publication date: October 29, 2015Applicant: Broadcom CorporationInventors: Sophie WILSON, John Redford, Tariq Kurd
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Publication number: 20150312802Abstract: A management controller in a network device may support performing management operations based on management traffic communicated wirelessly via a wireless network controller of the network devices. The management controller may perform the management operations and/or to support wireless communication of the management traffic independent of operations of the network device. The management controller may be integrated into a network controller in the network device. The management traffic may comprise out-of-band (OOB) management related traffic. A direct interface may be established between the management controller and the wireless network controller, to support direct sideband communication between the management controller and the wireless network controller. The sideband interface may incorporate Network Controller Sideband Interface (NC-SI) and/or Secure Digital Input Output (SDIO) interface.Type: ApplicationFiled: June 11, 2015Publication date: October 29, 2015Applicant: BROADCOM CORPORATIONInventors: Hemal SHAH, Suryakant MAHARANA, Manoj KAMATH, Nisar SOTAKANAL
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Publication number: 20150311913Abstract: Systems, apparatuses, and methods are provided for analog-to-digital converters (ADCs), such as successive-approximation-register (SAR) ADCs and pipelined ADCs that utilize distributed virtual-ground switching (DVS). DVS circuits and systems receive reference signal inputs that are provided to input signal buffers at the input side of the buffers via reference switches. The input signal buffers and corresponding switches are distributed into scaled replicas that each receive an analog input signal via input signal switches during a first operational phase and are connected to top plates of corresponding distributed capacitors. The bottom plates of the capacitors are sampled to provide analog input signal representations.Type: ApplicationFiled: April 30, 2014Publication date: October 29, 2015Applicant: Broadcom CorporationInventors: Hui Pan, Karim Abdelhalim
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Publication number: 20150310909Abstract: A memory cell including a storage cell, a write port cell, and a read port cell is discussed. The storage cell is configured to store a logic value. The write port cell is configured to write the logic value. The read port cell is configured to read the stored logic value and includes a plurality of read ports. At least a first port of the plurality of read ports includes a first and a second active diffusion region that are each configured to be used for implementation of a second p-channel transistor. At least a second read port of the plurality of read ports includes a third and fourth active diffusion regions that are each configured to be used for implementation of a second n-channel transistor.Type: ApplicationFiled: May 15, 2014Publication date: October 29, 2015Applicant: Broadcom CorporationInventor: Scott Yu-Fan CHU
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Patent number: 9170769Abstract: A system and method to reduce and/or eliminate crosstalk between various data paths of a data bus within integrated circuits (i.e., chips). The system and method can transmit both delayed and non-delayed data in respective transmission paths, store the delayed and non-delayed data upon receipt, and delay the reading of the delayed and non-delayed data from the storage unit to compensate for the delay implemented on the transmission of the delayed data.Type: GrantFiled: September 13, 2013Date of Patent: October 27, 2015Assignee: Broadcom CorporationInventors: Sandeep Mirchandani, Chakrapal Kalwa, Chi-Jung Peng
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Patent number: 9173178Abstract: A method and system are provided in which a mobile device may be operable for long term evolution (LTE) communication or some other wireless technology via two or more transmit antennas. The device may comprise a power amplifier for each transmit antenna with substantially similar maximum power being provided by both amplifiers. A power headroom value may be determined in the device based on path loss values between the transmit antennas and a base station and the maximum transmit power for each transmit antenna. Transmission via one of the transmit antennas may occur concurrently with transmission via another of the transmit antennas. The device may generate an indication of the determined power headroom value for communication to the base station. The power headroom value may be reported periodically or in response to a change in the power received at the base station.Type: GrantFiled: March 31, 2011Date of Patent: October 27, 2015Assignee: Broadcom CorporationInventors: Soumen Chakraborty, Rishi Ranjan, Erik Stauffer, Kamlesh Rath, Manish Airy
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Patent number: 9172710Abstract: Methods, systems and computer program products to implement extensions of the Media Transport Protocol (MTP) are provided herein. The methods include opening a session between an initiator and a responder, exchanging one or more of device and system information and sending one of an operation or event based on media player application features. The operation includes one or more of a dataset, response code, operation parameter and response parameter. In an embodiment, the extensions enable the initiator and responder to manage connections efficiently between devices, send media player application information to a media player device, exchange device and system information, manage digital rights, monitor system security and specify properties within one or more extensions of MTP. These extensions may be in the form of one or more of an operation, an event, a dataset or property code.Type: GrantFiled: December 31, 2007Date of Patent: October 27, 2015Assignee: Broadcom CorporationInventor: Scott Krig
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Patent number: 9172393Abstract: Methods, systems, and apparatuses for converting a digital input signal to an analog output signal are disclosed. A first delta-sigma modulator receives a common mode reference signal and generates a common mode control signal. A data delta-sigma modulator receives a digital input signal and generates a modulated digital input signal. A shuffler receives the modulated digital input signal and the common mode control signal and generates a shuffled digital input signal. A digital to analog converter (DAC) has a plurality of tri-level unit DAC elements each receiving a corresponding portion of the shuffled digital input signal as a first input signal, and receiving second and third input signals. The tri-level unit DAC elements have first outputs coupled together generating a first output signal and second outputs coupled together generating a second output signal. An operational amplifier receives the first and second output signals and generates the analog output signal.Type: GrantFiled: February 27, 2015Date of Patent: October 27, 2015Assignee: Broadcom CorporationInventors: David Stoops, Min Gyu Kim, Vinod Jayakumar
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Patent number: 9172954Abstract: A method for reducing memory bandwidth in a video decoder begins by performing a data reduction operation on a decoded first coded image to produce a second set of image data. The second set of image data stored and is selectively used for subsequent image decoding, thereby reducing the memory bandwidth. The data reduction operation can include image downsampling, wherein the pixel density is reduced by a factor of two in each of the vertical and horizontal directions.Type: GrantFiled: October 21, 2013Date of Patent: October 27, 2015Assignee: BROADCOM CORPORATIONInventor: Larry Pearlstein
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Patent number: 9172966Abstract: A system and method for encoding video is provided. The system may partition a video frame into multiple coding units. The system may determine a memory bandwidth budget and selectively code each coding unit based on a memory cost as compared to the memory bandwidth budget.Type: GrantFiled: May 30, 2013Date of Patent: October 27, 2015Assignee: Broadcom CorporationInventor: Lei Zhang
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Patent number: 9171170Abstract: A computing system, comprising includes a first central processing unit (CPU) and a second CPU coupled with the first CPU and with a host processor. The second CPU and the host processor may both request the first CPU to generate keys that have access rights to regions of memory to access specific data. The first CPU may be configured to, in response to a request from the second CPU, generate a unique key with a unique access right to a region of memory, the unique key usable only by the second CPU, not the host processor.Type: GrantFiled: December 6, 2012Date of Patent: October 27, 2015Assignee: Broadcom CorporationInventors: Andrew Dellow, Shashank Shekhar, Stephane Rodgers
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Patent number: 9172973Abstract: Described herein is a method and system for motion estimation in a video encoder. There are two parts to the motion estimation. Coarse motion estimation generates a set of motion vectors for a current picture and at least one reference picture. Typically, coarse motion estimation operates on sub-sampled pictures. Fine motion estimation can refine coarse motion estimation results by searching interpolated video data in a region defined by the motion vectors from the coarse motion estimation.Type: GrantFiled: April 1, 2005Date of Patent: October 27, 2015Assignee: Broadcom CorporationInventors: Bo Zhang, Stephen Gordon
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Patent number: 9172438Abstract: To control UE assumption of interference there is a controller module to control a plurality of transmission points, each constituted by a set of at least one transmit antenna, to transmit data to another device in a coordinated transmission from at least a subset of the plurality of transmission points. The controller module is configured to allocate, to each resource linked to the subset of the plurality of transmission points, an interference contribution parameter that is indicative of an expected interference contribution originating from said transmission point, and to inform said another device of those resources to which the subset of the plurality of transmission points is linked, together with the respective interference contribution parameter allocated to each resource. Another device reports feedback based on signals which are scaled with the respective interference contribution parameter.Type: GrantFiled: November 9, 2011Date of Patent: October 27, 2015Assignee: BROADCOM CORPORATIONInventors: Tommi Koivisto, Helka-Liina Maattanen, Mihai Enescu, Marko Lampinen
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Patent number: 9173163Abstract: Altering communication interface parameters based upon mobility. A novel approach is presented in which at least one operational parameter is changed as a function of the mobility of a wireless terminal. The changing of the operational parameter (which can be performed by either the wireless terminal, a WAP, or cooperatively by both) can include changing an entire protocol or only one operational parameter within the protocol. The mobility measure can be any one or combination of velocity (rate of change of position), acceleration, position within the network, or other measure. The mobility can be an average mobility over a period of time, or it can be an instantaneous mobility. The operational parameter can be changed by either communication device at each end of a communication link or in part, by both (e.g., either by a WAP (Wireless Access Point) or a communication device connected thereto, or by cooperation there between).Type: GrantFiled: March 8, 2007Date of Patent: October 27, 2015Assignee: Broadcom CorporationInventors: Jeyhan Karaoguz, James D. Bennett
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Patent number: 9172383Abstract: An integrated circuit package including an induction-coupled clock distribution system is disclosed. An exemplary embodiment of the disclosure includes a transmission module coupled to a main clock line, a clock reception module coupled to the transmission module, the clock reception module including a clock output line, and an electronic circuit coupled to the clock output line of the clock reception module, the electronic circuit including at least one clocked element and configured to operate synchronously with a clocking signal received through the clock output line of the clock reception module. The transmission module may be disposed on the supporting case of the IC package, and the electronic circuit and the clock reception module may be disposed on the semiconductor die of the IC package.Type: GrantFiled: September 13, 2013Date of Patent: October 27, 2015Assignee: Broadcom CorporationInventors: David Chang, Ajat Hukkoo
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Patent number: 9172407Abstract: A communication apparatus includes transmission circuitry and a frequency conversion unit. The transmission circuitry is configured to down-convert an input Intermediate Frequency (IF) signal using a transmit (TX) Local Oscillator (LO) signal so as to produce a TX baseband signal, to up-convert the TX baseband signal to produce an output Radio Frequency (RF) signal, and to send the output RF signal to an antenna. The frequency correction unit is configured to estimate a frequency of the TX baseband signal or of the input IF signal, and to adjust the TX LO signal based on the estimated frequency so as to cause the transmission circuitry to down-convert the input IF signal to a predefined target frequency.Type: GrantFiled: February 27, 2013Date of Patent: October 27, 2015Assignee: Broadcom Semiconductors Israel Ltd.Inventors: Igal Yehuda Kushnir, Jonathan Friedmann, Ronen Shaked, Tzahi Oren
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Publication number: 20150304922Abstract: Systems and methods are disclosed for offloading traffic from a first network to a second network using offload preference indication (OPI) information. The OPI information can be sent to a mobile communication device using the Access Network Discovery and Selection Function (ANDSF) framework or Radio Access Network (RAN) rules. Systems and methods are disclosed for offloading traffic for users in user groups using a variety of techniques, including randomization techniques, assigned offload class techniques, and bitmap allocation techniques.Type: ApplicationFiled: April 16, 2015Publication date: October 22, 2015Applicant: Broadcom CorporationInventors: Florin BABOESCU, Guillaume Jacques SEBIRE, Dutt KALAPATAPU, Hannu HIETALAHTI
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Publication number: 20150304037Abstract: Embodiments of the present invention exploit the existing capabilities of the Ethernet Passive Optical Network (EPON) MAC layer, designed for fiber optics communications, to provide a low cost MAC layer with upper layer connectivity over a hybrid fiber coaxial (HFC) network. In particular, embodiments allow for the EPON MAC to be used end-to-end (i.e., from an optical line terminal (OLT) to a coaxial network unit (CNU)) in a HFC network, thereby fully leveraging the packet processing capabilities, QoS functions, and management features of the EPON MAC. Furthermore, embodiments enable unified provisioning and management for both fiber and coaxial network units in a HFC network.Type: ApplicationFiled: August 22, 2013Publication date: October 22, 2015Applicant: Broadcom CorporationInventors: Edward Wayne Boyd, Sanjay Goswami
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Publication number: 20150304046Abstract: Embodiments provide systems and methods for a probabilistic reporting mode, where an Optical Network Unit (ONU) sends a REPORT message only when it has data to transmit. The absence of a REPORT message from an ONU is treated by the Optical Line Terminal (OLT) as indicating absence of data to transmit at the ONU. In another aspect, embodiments include systems and methods for an unsolicited burst mode, where an ONU can be configured to transmit data in the upstream in an unsolicited manner. The unsolicited burst mode includes mechanisms to ensure that no data is lost due to potential collisions between ONUs.Type: ApplicationFiled: May 29, 2014Publication date: October 22, 2015Applicant: Broadcom CorporationInventors: Glen KRAMER, Lowell D. Lamb