Patents Assigned to Broadcom
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Patent number: 9049399Abstract: Embodiments of a digital up-converter and an N-channel modulator are provided herein. The embodiments of the digital up-converter, in combination with the N-channel modulator, are capable of efficiently filling the spectrum of one or more RF signals with one or more types of information signals. For example, the digital up-converter can fill the spectrum of one or more RF signals with both broadcast and narrowcast video and data signals. In addition, the digital up-converter is capable of flexibly mapping the information signals to one or more channels of the one or more RF signals using a novel, three-level switching architecture.Type: GrantFiled: January 11, 2013Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Joel I. Danzig, Richard S. Prodan, Niki Pantelias, Thomas Kolze, Victor T. Hou, Taruna Tjahjadi
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Patent number: 9048990Abstract: Disclosed are various embodiments of extracting a paging message from paging channel downlink communications. A first and second page bursts and received. When the signal to noise ratio of the first and second bursts exceeds a threshold, a Viterbi decoder is executed and an error checking code calculated to determine whether the paging message is successfully extracted. If not, a third page burst is received and a Viterbi decoder executed to extract the paging message.Type: GrantFiled: February 24, 2012Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Sean (Fu-Hsuan) Chiu, Nick (Zhijun) Gong
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Patent number: 9049151Abstract: Various example embodiments are disclosed. According to an example embodiment, a method may include determining, by a port processor, a buffer length based on an amount of data stored in a port controlled by the port processor, comparing the buffer length to a low-power buffer threshold, determining a link utilization based on a number of packets transmitted by the port, comparing the link utilization to a link utilization threshold, and placing the port into a low-power state based on the comparison of the buffer length to the low-power buffer threshold and the comparison of the link utilization to the link utilization threshold.Type: GrantFiled: May 2, 2013Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Jin Ding, Bruce Kwan
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Patent number: 9048994Abstract: Downclocking and/or adaptive sub-carriers for single user, multiple user, multiple access, and/or MIMO wireless communications. Communication device operation within a wireless local area network (WLAN/WiFi) is effectuated in the frequency spectra typically associated with television broadcast channels. Operation is made on a secondary non-interfering basis to such television broadcast channels. Any desired channel bandwidth (e.g., 6 MHz, 7 MHz, 8 MHz, etc.) may be employed. Adaptation with respect to the number of data sub-carriers within different respective packets may be made in accordance with two or more respective operational modes. For example, modification of the number of data sub-carriers in different respective packets may be made to increase the signal bandwidth from a first band was to a second bandwidth.Type: GrantFiled: April 16, 2012Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventor: Ron Porat
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Patent number: 9048895Abstract: Multi-user null data packet (MU-NDP) sounding within multiple user, multiple access, and/or MIMO wireless communications. Within communication systems including multiple wireless communication devices (e.g., one or more APs, STAs, etc.), channel sounding of the selected communication links between the various wireless communication devices is performed. A MU-NDP announcement frame is transmitted to and received by various wireless communication devices indicating which of those wireless communication devices (e.g., one, some, or all) are being sounded. Then, respective NDP sounding frames are transmitted via the communication links corresponding to those wireless communication devices (e.g., one, some, or all) are being sounded, and sounding feedback signals are subsequently sent back to the original transmitting wireless communication device.Type: GrantFiled: November 19, 2010Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Joonsuk Kim, Matthew James Fischer, Peiman Amini, Vinko Erceg
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Patent number: 9049069Abstract: A sparse equalizer system is disclosed. One or more multiple tapped delay lines (e.g., equalizers and/or pre-equalizers) are implemented to service one or more respective channels with which a communication device operates to support communications with at least one other communication device. Adaptive selection of which subsets of taps of the one or more multiple tapped delay lines is made to control those particular taps of which contribute to one or more subsequent slicer inputs. Those taps which are not currently operating to contribute to the slicer input may undergo processing, updating, etc. in parallel with or simultaneously with the processing of a signal to generate the outputs to be provided to the one or more subsequent slicers.Type: GrantFiled: March 21, 2013Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Thomas J. Kolze, Richard Stephen Prodan
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Patent number: 9047127Abstract: Systems, apparatuses and methods are disclosed for apportioning tasks among devices. One such method is performed in handheld wireless communication device (HWCD). The method includes discovering available resources in a network and dynamically assessing cost functions for performing a task on the HWCD and on each of the discovered resources. Each of the respective cost functions is based on performance factors associated with the HWCD or with one of the devices. Based on change in the cost functions, the task is apportioned for local execution by the HWCD or remote execution by the available resources.Type: GrantFiled: April 30, 2013Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Arya Behzad, Mark Buer, Jeyhan Karaoguz, Alexander MacInnis, Thomas Quigley, John Walley
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Patent number: 9047835Abstract: Embodiments for thermal and/or power aware graphics processing are provided. In an embodiment, a thermally and/or power adaptive graphics processing environment is presented. The graphics processing environment includes various thermally and/or power adaptive elements, each of which may be thermally and/or power aware (adaptive) in the sense that it may adapt at least one aspect of its operation and/or outputs based on thermal and/or power information to effectuate a change in graphics processing in any element (including itself) of the environment. This may include changing or causing a change in at least one of a graphics element, feature, setting, or characteristic based on thermal and/or power information. In an embodiment, thermal and/or power based adaptation may include software and/or hardware adaptation of graphics processing to affect thermal and/or power performance.Type: GrantFiled: March 19, 2012Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventor: James Bennett
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Patent number: 9049736Abstract: Video sub-reservation protocol in a wireless ecosystem. Appropriate access is provided to a number of wireless communication devices to ensure very high performance and a high perceptual user experience with respect to media related content communications. Access to the communication medium (e.g., air within a wireless location system) is provided to various wireless communication devices in a manner as to minimize collisions and contention. In one instance, different respective access assignment periods are sub-divided to give respective communication medium access to various devices within the system. Such sub-reservation may be adaptive in response to any of a number of considerations (e.g., traffic, device processing history, etc.). Also, such sub-reservation may provide respective time specificity at or during which certain devices may conduct communications, but may also specify any other operational parameters (e.g.Type: GrantFiled: July 27, 2011Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Peyush Agarwal, James F. Dougherty, III, Yasantha N. Rajakarunanayake
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Patent number: 9049652Abstract: Aspects of a method and system for controlling access and utilization of femtocells via a network based service are provided. In this regard, a femtocell management entity communicatively coupled to a network and operable to manage one or more femtocells may be accessed via an end-user communication device. In this manner, the femtocell(s) may be managed via the end-user device such as one of the cellular enabled communication devices. The femtocell management entity may enable establishing one or more SLAs between the femtocell(s) and the cellular enabled communication device(s). The SLA(s) may enable the cellular enabled communication device(s) to establish one or more cellular communication channels with the femtocell(s). The SLA(s) may determine when the cellular communication channels may be established. The SLA(s) may determine how a femtocell owner/operator may be compensated for providing cellular service. The femtocell(s) may be accessed utilizing Internet Protocol.Type: GrantFiled: February 27, 2009Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Charles Abraham, Xuemin Sherman Chen, Wael William Diab, Vinko Erceg, Victor T. Hou, Jeyhan Karaoguz, Mark Kent
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Patent number: 9049208Abstract: A media processing device, such as a set top box, having a plurality of selectable hardware and software components for supporting multiple media pathways providing differing levels of security. In general, each security level corresponds to a particular certification service boundary definition(s) or key/authentication and security management scheme for managing resources such as hardware acceleration blocks and software interfaces. Different sets of components may be adaptively employed to ensure composited compliance with one or more security constraints and to address component unavailability. Security constraints may be applied, for example, on a source or media specific basis, and different versions of a media item may be provided over multiple pathways providing corresponding levels of security. In one embodiment, a service operator or content provider may provide requisite certification or security requirements, or otherwise assist in selection of pathway components.Type: GrantFiled: December 17, 2012Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventor: Xuemin (Sherman) Chen
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Patent number: 9049616Abstract: Session recovery after network coordinator or AP restart for single user, multiple user, multiple access, and/or MIMO wireless communications. Restart or reset of a network coordinator (e.g., an access point (AP) or other network coordinator type device) may occur for various reasons (e.g., a power cycle or power failure, inadequate failover protection, scheduled or planned power outages such as for including network maintenance, software upgrades, etc.). Upon determination of network coordinator restarted or reset, a singular bit within a communication from the network coordinator indicates synchronization or not of the its timing synchronization function (TSF) (e.g., with other devices in the communication system, such as wireless stations (STAs), smart meter stations (SMSTAs), etc.). A given device (e.g., STA, SMSTA, etc.) can provide its current TSF to the network coordinator so that it can resynchronize, re-establish its scheduled for wake times of those devices (e.g., target wake times (TWTs)), etc.Type: GrantFiled: March 15, 2013Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Chiu Ngok Eric Wong, Matthew James Fischer
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Patent number: 9046576Abstract: 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: July 17, 2013Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Arya Reza Behzad, Ahmadreza Rofougaran, Sam Ziqun Zhao, Jesus Alfonso Castaneda, Michael Boers
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Patent number: 9049466Abstract: A video transmitter identifies regions in pictures in a compressed three-dimensional (3D) video comprising a base view video and an enhancement view video. The identified regions are not referenced by other pictures in the compressed 3D video. The identified regions are watermarked. Pictures such as a high layer picture in the base view video and the enhancement view video are identified for watermarking. The identified regions in the base view and/or enhancement view videos are watermarked and multiplexed into a transport stream for transmission. An intended video receiver extracts the base view video, the enhancement view video and corresponding watermark data from the received transport stream. The corresponding extracted watermark data are synchronized with the extracted base view video and the extracted enhancement view video, respectively, for watermark insertion. The resulting base view and enhancement view videos are decoded into a left view video and a right view video, respectively.Type: GrantFiled: October 4, 2012Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Xuemin Chen, Samir Hulyalkar, Marcus Kellerman, Ilya Klebanov
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Patent number: 9048906Abstract: Beamforming precoding matrix using non-uniform angles quantization. Adaptively generated feedback information is provided between communication devices that communicate using more than one communication path, link, connection, etc. With respect to feeding back different types of information having different respective characteristics (e.g., different respective probability density functions), different and respective quantization may be employed for the different types of information. For example, uniform, Gaussian, or per bit loop optimized quantization may be individually selected and employed for each of the different types of feedback information used in a wired communication system (e.g.Type: GrantFiled: January 9, 2012Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventor: Avi Kliger
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Patent number: 9049530Abstract: An audio processing system is disclosed. The audio processing system may include a processor and a transmitter and may allow a surround sound system to utilize the transmission bandwidth efficiently by adaptively transmitting a supplementary data from a secondary source in addition to the audio signals of a primary source. The processor may determine a first number of channels available for audio in the transmitter and a second number of channels available in a remote receiver that is capable of receiving the audio. The processor may cause a secondary source to adaptively communicate a combination of data from a plurality of supplementary sources in some of a plurality of channels of the audio based upon the first number of channels and the second number of channels.Type: GrantFiled: September 27, 2011Date of Patent: June 2, 2015Assignee: BROADCOM CORPORATIONInventor: Brajabandhu Mishra
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Patent number: 9049440Abstract: Techniques are described herein for supporting independent viewer tailoring of same media source content via a common 2D-3D display. A first independently controllable version of video content is caused to be delivered to a first region of a screen. A second independently controllable version of the video content is caused to be delivered to a second region of the screen. The first region and the second region overlap at least in part. For example, the first and second independently controllable versions may be simultaneously displayed such that the first independently controllable version is displayed for a first viewer but not for a second viewer and such that the second independently controllable version may be displayed for the second viewer but not for the first viewer.Type: GrantFiled: December 30, 2010Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Nambirajan Seshadri, James D. Bennett, Jeyhan Karaoguz
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Patent number: 9048018Abstract: A transformer has first and second transformer windings including multiple differential ports. Each of the first and second transformer windings include a first transformer half-winding coupled to a first differential port of the differential ports. Each of the first and second transformer windings also include a second transformer half-winding coupled to a second differential port of the differential ports. Each of the first and second transformer windings is divided symmetrically at a common node to form the respective first and second transformer half-windings. The first transformer half-winding is configured to form one half of an inductance in each of the first and second transformer windings. The second transformer half-winding is configured to form another half of the inductance in each of the first and second transformer windings. The common node of the first transformer winding is configured to receive a supply voltage.Type: GrantFiled: May 15, 2013Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventors: Sayedfarid Shirinfar, Ehsan Adabi Firouzjaei, Tirdad Sowlati, Ahmadreza Rofougaran
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Patent number: 9049662Abstract: Target wake time (TWT) within single user, multiple user, multiple access, and/or MIMO wireless communications. Within communication systems including different respective devices therein (e.g., wireless stations (STAs), smart meter stations (SMSTAs), etc.), coordination is made with respect to those devices awakening from less than full power state (e.g., from sleep, reduce functionality, power saving state, etc.). A TWT information element (IE) may be included within a frame or a signal corresponding to or based on that frame that is transmitted from one device to other device(s). One or more respective future targeted times (e.g., which may be based on a timing synchronization function (TSF) reference time) at which device(s) may awaken from less than full power state may be included within the TWT IE. Over time, different respective TWT IEs may be provided from various devices, such that respective targeted awake times may be modified dynamically for any given device.Type: GrantFiled: January 11, 2013Date of Patent: June 2, 2015Assignee: Broadcom CorporationInventor: Matthew James Fischer
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Publication number: 20150145568Abstract: Methods, systems, and apparatuses are described for compensating for an undesired fractional spur due to a PLL in a communication system. The communication system includes a time-to-digital converter (TDC) that is configured to execute in parallel to the PLL. The TDC is configured to determine a phase difference between a reference frequency and an output oscillation signal provided by the PLL. The phase difference is received by a processor to estimate particular characteristics of the undesired fractional spur, and the estimate of the characteristics is used to construct an estimate of the undesired fractional spur.Type: ApplicationFiled: December 17, 2013Publication date: May 28, 2015Applicant: Broadcom CorporationInventors: Alireza Tarighat Mehrabani, Behzad Nourani