Patents Assigned to Broadcom Corporation
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Patent number: 8532718Abstract: A mobile communication device comprising a low power signal detector and a manner of utilizing a low power signal detector in a mobile communication device. Various aspects of the present invention may comprise a first module adapted to receive a communication signal. A second module may be adapted to operate in a plurality of operating modes, comprising a first mode and a second mode. The first mode may, for example, comprise characteristics of a sleep mode. The second module may, in the second mode, process the received communication signal (e.g., determining information communicated by the received communication signal). A third module may be adapted to determine, based at least in part on a non-informational characteristic of the received communication signal, whether to operate the second module in the first mode or in the second mode.Type: GrantFiled: December 7, 2005Date of Patent: September 10, 2013Assignee: Broadcom CorporationInventors: Arya Behzad, Ahmadreza Rofougaran
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Patent number: 8533770Abstract: A system and method for supporting the playback of user captured media when in an idle state is disclosed. An embodiment of the present invention may permit a user to select media content to be displayed or played at one or more display devices interfaced to a media processing system, when the media processing system is in an idle state. The media content may comprise audio, still images, video, and data, and may be pushed to the media processing system via a communication network that may be the Internet. A user of a media processing system may select the media content using a media guide interface, and may choose when the media processing system enters an idle state.Type: GrantFiled: September 22, 2003Date of Patent: September 10, 2013Assignee: Broadcom CorporationInventors: Jeyhan Karaoguz, James D. Bennett
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Publication number: 20130229574Abstract: Various methods and systems are provided for transmission variable delay and jitter indication. In one example, a method includes determining a variable delay reference (VDR) corresponding to an instantaneous jitter between an idealized transmission time associated with a packet for transmission in a transmission stream and an actual transmission time of the packet and providing the VDR to a receiver in a sub-header of the packet. In another example, a transmitter includes a MAC configured to include a VDR in a sub-header of a packet for transmission in a transmission stream and a PHY configured to transmit the packet including the VDR in the transmission stream. In another example, a method includes receiving a packet in a transmission stream; extracting a program clock reference (PCR) and a VDR from the packet information; and controlling timing of processing of the packet based upon the PCR and VDR.Type: ApplicationFiled: February 26, 2013Publication date: September 5, 2013Applicant: Broadcom CorporationInventor: Alexander MacInnis
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Publication number: 20130230005Abstract: A wireless transceiver, comprising a transmitter, a receiver and a plurality of antennas, determines transmit phase relationship between at least two of antennas based on radio frequency (RF) signals received via the at least two antennas from one or more antennas of a base station. RF signals are transmitted via the at least two antennas utilizing the determined transmit phase relationship. The receiver is calibrated based on receiver performance determined from the received RF signals for subsequent reception of RF signals. The transmit phase relationship is dynamically adjusted based on the transmit RF measurements and the determined receiver performance. Transmit channel qualities are determined for each transmit antenna based on the transmit RF measurements and the dynamically adjusted transmit phase relationship.Type: ApplicationFiled: April 22, 2013Publication date: September 5, 2013Applicant: Broadcom CorporationInventors: Sriraman DAKSHINAMURTHY, Robert Gustav LORENZ
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Publication number: 20130229232Abstract: There is presented a high bandwidth circuit for high-speed transceivers. The circuit may comprise an amplifier combining capacitor splitting, inductance tree structures, and various bandwidth extension techniques such as shunt peaking, series peaking, and T-coil peaking to support data rates of 45 Gbs/s and above while reducing data jitter. The inductance elements of the inductance tree structures may also comprise high impedance transmission lines, simplifying implementation. Additionally, the readily identifiable metal structures of inductors and t-coils, the equal partitioning of the load capacitors, and the symmetrical inductance tree structures may simplify transceiver implementation for, but not limited to, a clock data recovery circuit.Type: ApplicationFiled: April 22, 2013Publication date: September 5, 2013Applicant: Broadcom CorporationInventors: Delong Cui, Afshin Momtaz, Jun Cao
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Publication number: 20130230165Abstract: A method and system for secure and scalable key management for cryptographic processing of data is described herein. In the method, a General Purpose Cryptographic Engine (GPE) receives key material via a secure channel from a key server and stores the received Key encryption keys (KEKs) and/or plain text keys in a secure key cache. When a request is received from a host to cryptographically process a block of data, the requesting entity is authenticated using an authentication tag included in the request. The GPE retrieves a plaintext key or generate a plaintext using a KEK if the authentication is successful, cryptographically processes the data using the plaintext key and transmits the processed data. The system includes a key server that securely provides encrypted keys and/or key handles to a host and key encryption keys and/or plaintext keys to the GPE.Type: ApplicationFiled: March 29, 2013Publication date: September 5, 2013Applicant: Broadcom CorporationInventors: Mark BUER, Zheng QI
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Publication number: 20130230087Abstract: A signal quality metric is determined for each of multiple signal paths. Each of the signal paths corresponds to a respective antenna. The determined signal quality metric is modified for one or more signal paths. A subset of the signal paths is selected for receiving a signal based at least in part on the determined signal quality metrics. The selecting is biased based at least in part on the modified signal quality metrics.Type: ApplicationFiled: April 18, 2013Publication date: September 5, 2013Applicant: Broadcom CorporationInventors: Rajendra Tushar Moorti, Min Chuin Hoo, Jason Alexander Trachewsky
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Publication number: 20130230124Abstract: A method and apparatus for transmit signal pulse shaping. Automotive vehicle manufacturers that incorporate electronic components into an automotive vehicle must consider emission requirements masks that can be dependent on particular geographic markets as well as the other electronic components contained within a particular automotive vehicle design. A physical layer device is provided that can be configured to operate in multiple emissions configurations using configurable parameters.Type: ApplicationFiled: April 24, 2013Publication date: September 5, 2013Applicant: Broadcom CorporationInventors: Ahmad Chini, Seyed Hamidi, Mehmet Vakif Tazebay
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Publication number: 20130231149Abstract: A system and method for wireless local area network airtime fairness. Distribution of airtime amongst a plurality of associated mobile stations can be based on a determination of a total channel availability. The total channel available is based on a total channel utilization determined through detected energy on the channel and a mobile station utilization determined through monitored traffic between the wireless access point and the associated mobile stations.Type: ApplicationFiled: March 5, 2012Publication date: September 5, 2013Applicant: Broadcom CorporationInventor: Guangquan Zhou
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Publication number: 20130232033Abstract: A system providing billing support for the exchange of media is disclosed. An embodiment of the present invention may provide for the authorization of and billing for the delivery of media from a media server to local storage for consumption on a television display. The media may be audio, still pictures, video, or data. Other embodiments may provide for the authorization of and billing for the transfer of media from a media peripheral to a media server for media backup or distribution. A media peripheral may be, for example, a digital camera, digital camcorder, personal computer (PC), personal digital assistant (PDA), multi-media gateway, and MP3 player. An embodiment may support pre-payment, payment at time of use, and post-use billing for the media exchange. In an embodiment of the present invention, the storing or accessing of media may be performed without identifying the user to the media server.Type: ApplicationFiled: April 25, 2013Publication date: September 5, 2013Applicant: Broadcom CorporationInventors: Jeyhan Karaoguz, James Duane Bennett
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Patent number: 8526556Abstract: Certain aspects of a method and system for a delay locked loop for a rake receiver are disclosed. Aspects of one method may include normalizing a signal power of a first control channel based on a threshold value. A sampling time associated with at least one or more of the following: the first control channel, a second control channel, an on-time control channel, and a data channel, may be adjusted based on a comparison between the normalized signal power of the first control channel and a signal power of the second control channel. The second control channel may be delayed with respect to the first control channel by a particular time period. The first and second control channels may be common pilot control channels (CPICHs). The combined signal power of the first control channel may be normalized based on said threshold value.Type: GrantFiled: September 13, 2012Date of Patent: September 3, 2013Assignee: Broadcom CorporationInventors: Hongwei Kong, Li Fung Chang, Huaiyu Zeng
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Patent number: 8526340Abstract: A packet voice transceiver adapted to reside at a first end of a communication network and to send an ingress communication signal comprising voice packets to, and receive an egress communication signal comprising voice packets from, a second packet voice transceiver residing at a second end of the communication network. The packet voice transceiver includes a far-end echo canceller that reduces echo that is present in the egress communication signal. The far-end communicates with other functional components of the transceiver system and cancels echo or refrains from canceling echo based on the activity of the other functional components.Type: GrantFiled: July 20, 2010Date of Patent: September 3, 2013Assignee: Broadcom CorporationInventor: Wilfrid LeBlanc
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Patent number: 8525599Abstract: Aspects of a method and system for frequency tuning based on characterization of an oscillator are provided. A value of a first control word which controls a variable impedance of an oscillator may be determined. The determined value may be mapped to a corresponding value of a second control word which controls a variable impedance of a tuned circuit. The mapping may be based on a relationship between the variable impedance of the oscillator and the variable impedance of the tuned circuit, such as logical and/or mathematical relationship. The value of the first control word may be determined based on desired frequency of the tuned circuit and/or based on a desired impedance of the variable impedance of the tuned circuit. The tuned circuit may comprise, for example, an oscillator or a filter.Type: GrantFiled: August 24, 2010Date of Patent: September 3, 2013Assignee: Broadcom CorporationInventor: Ahmadreza Rofougaran
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Patent number: 8526367Abstract: A wireless communication device includes a front-end module (FEM) network, an RF connection, and a system on a chip (SOC). A first set of FEMs is operable to output, via an antenna, a first outbound RF signal to a first wireless communication device and receive a first inbound RF signal via an antenna. A second set of FEMs is operable to output, via an antenna, a second outbound RF signal to a second wireless communication device, wherein the second outbound RF signal is representative of the first inbound RF signal, and receive a second inbound RF signal via an antenna, wherein the first outbound RF signal is representative of the second inbound RF signal. The SOC is operable to activate the first and second sets of FEMs, facilitate the first outbound RF signal representing the second inbound RF signal, and facilitate the second outbound RF signal representing the first inbound RF signal.Type: GrantFiled: March 30, 2011Date of Patent: September 3, 2013Assignee: Broadcom CorporationInventors: Hooman Darabi, Ahmadreza (Reza) Rofougaran
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Patent number: 8525370Abstract: A circuit board assembly includes a multiple layer substrate, a wireless power transmitter control module, a wireless power coil assembly, and a plurality of ICs. The wireless power transmitter control module is supported by a layer of the multiple layer substrate and the wireless power coil assembly is fabricated on an inner layer of the multiple layer substrate. The ICs are mounted on an outer layer of the multiple layer substrate, wherein an IC of the plurality of IC is aligned to substantially overlap a coil of the wireless power coil assembly and is wirelessly powered by the wireless power transmitter control module via the coil.Type: GrantFiled: June 3, 2010Date of Patent: September 3, 2013Assignee: Broadcom CorporationInventors: John Walley, Jeyhan Karaoguz, Ahmadreza (Reza) Rofougaran, Nambirajan Seshadri, Reinier Van Der Lee
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Patent number: 8526303Abstract: Herein described are at least a system and a method for regulating data flow in a data pipeline that may be used in a video processing system. The system comprises a processor, one or more data buffers, and one or more processing stations. The one or more data buffers may be used to buffer corresponding processing stations. Each of the one or more processing stations may comprise a switching circuitry that is used to inhibit data transmission when a hold signal is received from the processor. The processor may send the signal in response to a feedback control signal generated by the one or more processing stations. The method may comprise determining if the processing time of a processing station exceeds a specified time. The method further comprises generating a feedback control signal to a processor if the specified time is exceeded.Type: GrantFiled: January 31, 2006Date of Patent: September 3, 2013Assignee: Broadcom CorporationInventors: Steve Walter Rodgers, Rajesh Mamidwar
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Patent number: 8526946Abstract: Systems and methods are presented to support operation of a multiple subscriber identity module (SIM) device. A first SIM may perform a data transfer or voice call. During the first SIM's data transfer or voice call, transition times are identified to transition communication resources to a second SIM for use in performing a registration update communication with a network controller that supports the second SIM. The registration update communication may include a periodic location update, a periodic routing update, or a periodic tracking update. The multiple SIM device may identify the transition time by obtaining periodic registration timing information from the network controller, configuring a periodic registration timer based on the periodic registration timing information, and setting the transition time as an expiration time of the periodic registration timer.Type: GrantFiled: July 10, 2012Date of Patent: September 3, 2013Assignee: Broadcom CorporationInventors: Giridhar Pattaswamy, Navin K. Karra, Abhishek Pandit, Stephen J Richards, Yuan Liu, Yaxin Cao, Jun Lin
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Patent number: 8526893Abstract: A configurable transceiver includes an RF receiver that generates a stream of inbound data from at least one received RF signal, wherein the RF receiver is configurable in response to a control signal. An RF transmitter generates at least one RF signal from a stream of outbound data, wherein the RF transmitter section is configurable in response to the control signal. A configuration controller generates the control signal based on channel data. A power management unit generates at least one receiver supply signal and at least on transmitter supply signal in accordance with a plurality of power consumption parameters, and wherein the power management unit adjusts at least one of the plurality of power consumption parameters based on the control signal.Type: GrantFiled: February 18, 2013Date of Patent: September 3, 2013Assignee: Broadcom CorporationInventor: Ahmadreza Rofougaran
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Patent number: 8526441Abstract: A system for reordering frames may include at least one processor that enable receiving of an out-of-order frame via a network subsystem. The at least one processor may enable placing data of the out-of-order frame in a host memory, and managing information relating to one or more holes resulting from the out-of-order frame in a receive window. The at least one processor may enable setting a programmable limit with respect to a number of holes allowed in the receive window. The out-of-order frame is received via a TCP offload engine (TOE) of the network subsystem or a TCP-enabled Ethernet controller (TEEC) of the network subsystem. The network subsystem may not store the out-of-order frame on an onboard memory, and may not store one or more missing frames relating to the out-of-order frame. The network subsystem may include a network interface card (NIC).Type: GrantFiled: April 13, 2011Date of Patent: September 3, 2013Assignee: Broadcom CorporationInventor: Uri Elzur
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Patent number: 8526429Abstract: A system for serving an individual node in a shared communication network having a MAC layer and a PHY layer, the system being operative to interface between the MAC layer and the PHY layer. The system may include a first physical channel transferring at least one packet between the layers, a second physical channel transferring at least one burst parameter between the layers, and a third physical channel transferring at least one timing signal, for a burst characterized by the at least one burst parameter and comprising the at least one packet, between the layers.Type: GrantFiled: July 27, 2010Date of Patent: September 3, 2013Assignee: Broadcom CorporationInventors: Avi Kliger, Yitshak Ohana, Moshe Tarrab