Patents Assigned to Broadcom
  • Patent number: 8711728
    Abstract: A mobile communication device includes a first wireless transceiver that receives a first inbound RF signal and that transmits a first outbound RF signal based on a first power supply signal. A second wireless transceiver receives a second inbound RF signal and that transmits a second outbound RF signal based on a second power supply signal. A processing module generates at least one power mode signal based on first transmit power control data received via the first inbound RF signal. A power management circuit adjusts a first power consumption parameter of the first power supply signal and a second power consumption parameter of the second power supply signal based on the at least one power mode signal.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: April 29, 2014
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8713309
    Abstract: A security architecture in which a security module is integrated in a client machine, wherein the client machine includes a local host that is untrusted. The security module performs encryption and decryption algorithms, authentication, and public key processing. The security module also includes separate key caches for key encryption keys and application keys. A security module can also interface a cryptographic accelerator through an application key cache. The security module can authorize a public key and an associated key server. That public key can subsequently be used to authorize additional key servers. Any of the authorized key servers can use their public keys to authorize the public keys of additional key servers. Secure authenticated communications can then transpire between the client and any of these key servers. Such a connection is created by a secure handshake process that takes place between the client and the key server.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: April 29, 2014
    Assignee: Broadcom Corporation
    Inventor: Mark Buer
  • Publication number: 20140115718
    Abstract: A media processing device, such as a set top box, having selectable hardware and software components for forming media pathways compliant with security definitions provided by downloaded or preinstalled software applications. Such applications may include, for example, a downloadable conditional access security or DRM element/definition. A corresponding certification process can entail certifying a portion of an overall secure pathway, with one or more applications providing the final portion of the certification. Alternatively, predefined conditional access mechanisms are provided, with an application establishing which mechanism is to be used. In various embodiments, a set top box or resident software application may exchange capabilities with other devices in a media consumption network to compare against the requirements of the software application.
    Type: Application
    Filed: January 3, 2013
    Publication date: April 24, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Marcus C. Kellerman, Xuemin (Sherman) Chen
  • Publication number: 20140112196
    Abstract: A Wireless mobile communication (WMC) device may maintain user preference information, which is unique to the WMC device capabilities and the device user. WMC devices located in near proximity of each other may be enabled to form an ad hoc wireless network wherein each WMC device within the network may function as a router for other devices. Utilizing such routing capability within an ad hoc wireless network may allow WMC devices that are out of their wireless coverage area to use other WMC devices within such ad hoc wireless network to route any impending communication through such other WMC devices wherein these devices may have wireless connectivity to their coverage networks. WMC devices that are may have external connectivity may be enable to be selective in routing information and/or data from other WMC devices in the ad hoc network.
    Type: Application
    Filed: December 30, 2013
    Publication date: April 24, 2014
    Applicant: Broadcom Corporation
    Inventors: Thomas Quigley, Alexander Garland MacInnis, Arya Reza Behzad, Jeyhan Karaoguz, John Walley, Mark Buer
  • Publication number: 20140115330
    Abstract: 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: Application
    Filed: December 17, 2012
    Publication date: April 24, 2014
    Applicant: BROADCOM CORPORATION
    Inventor: Xuemin (Sherman) Chen
  • Publication number: 20140112147
    Abstract: Embodiments of the present disclosure provide apparatuses, systems, and methods for accounting for tokens in one or more token buckets. One such embodiment includes memory; and a token bucket administration apparatus configured to iterate through a plurality of token buckets assigned to specific positions within a calendar segment and process each token bucket in sequence by reading a biased token count value from the memory for a token bucket, adjusting the biased token bucket value, and writing the adjusted token bucket value back to the memory.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 24, 2014
    Applicant: Broadcom Corporation
    Inventor: THOMAS MICHAEL ESPOSITO
  • Publication number: 20140115324
    Abstract: Systems and methods for secure remote biometric authentication are provided. A network-based biometric authentication platform stores biometric templates for individuals which have been securely enrolled with the authentication platform. A plurality of sensor platforms separately establishes secure communications with the biometric authentication platform. The sensor platform can perform a biometric scan of an individual and generate a biometric authentication template. The sensor platform then requests biometric authentication of the individual by the biometric authentication platform via the established secure communications. The biometric authentication platform compares the generated biometric template to one or more of the enrolled biometric templates stored in memory at the biometric authentication platform. The result of the authentication is then communicated to the requesting sensor platform via the established secure communications.
    Type: Application
    Filed: December 20, 2013
    Publication date: April 24, 2014
    Applicant: Broadcom Corporation
    Inventor: Mark BUER
  • Publication number: 20140112376
    Abstract: A system for reduced pair Ethernet transmission. The system includes an interleaver that is operable to receive sets of four code symbols from a physical channel sub-layer (PCS) encoder, wherein each code symbol of each set of four code symbols is associated with one of four channels, and interleave the sets of four code symbols to generate a plurality of interleaved code symbols. The system further includes a serializer that is operable to serialize the plurality of interleaved code symbols to generate a plurality of interleaved and serialized code symbols. The system further includes a transmitter that is operable to transmit the plurality of interleaved and serialized code symbols over an Ethernet medium comprising a single twisted pair of wires.
    Type: Application
    Filed: October 19, 2012
    Publication date: April 24, 2014
    Applicant: Broadcom Corporation
    Inventors: Peiqing Wang, Linghsiao Wang
  • Publication number: 20140112335
    Abstract: The present invention includes a network telephone having a microphone coupled to provide voice data to a network, a speaker coupled to facilitate listening to voice data from the network, a dialing device coupled to facilitate routing of voice data upon the network, a first port configured to facilitate communication with a first network device, a second port configured to facilitate communication with a second network device and a prioritization circuit coupled to apply prioritization to voice data provided by the microphone.
    Type: Application
    Filed: December 27, 2013
    Publication date: April 24, 2014
    Applicant: Broadcom Corporation
    Inventors: Theodore F. BABENKO, Ian Crayford, David L. Hartman, JR.
  • Publication number: 20140112377
    Abstract: Techniques are described herein that receive communications transmitted according to different operation modes at a multi-mode, programmable receiver system. The multi-mode, programmable receiver system may receive communication signals from transmit antennas in “cells” (e.g., base station transceivers and/or the like) according to one or more operation modes, using receive antennas. The received signals may be converted and processed by various modules of the multi-mode, programmable receiver system to produce an output signal. The multi-mode, programmable receiver system includes modules that are programmable to be selectively enabled or disabled according to an operation mode in accordance with which the multi-mode, programmable receiver system operates.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 24, 2014
    Applicant: BROADCOM CORPORATION
    Inventor: Fu-Hsuan Chiu
  • Publication number: 20140112383
    Abstract: In various embodiments, video streams are decoded using decoders that support a different decoding profile. First processing circuitry is configured to receive a video stream encoded using a first encoding profile, transcode the video stream from the first encoding profile to a second encoding profile, and store the transcoded video stream in an output buffer. Second processing circuitry is configured to receive the transcoded video stream from the output buffer and decode the transcoded video stream according to the second encoding profile. The second processing circuitry may be unable to decode the video stream encoded using the first encoding profile.
    Type: Application
    Filed: October 19, 2012
    Publication date: April 24, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Zhijie Yang, Xuemin Chen
  • Publication number: 20140113684
    Abstract: A power status signal is received in an integrated circuit that indicates an inductive power status of an inductive power module and a power status of an alternative source. A power mode is selected based on the at least one power status signal. A power mode signal is generated based on the selected power mode. A power supply signal is generated and adjusted in response to the power mode signal.
    Type: Application
    Filed: January 2, 2014
    Publication date: April 24, 2014
    Applicant: BROADCOM CORPORATION
    Inventor: Ahmadreza (Reza) Rofougaran
  • Publication number: 20140111319
    Abstract: A device and method for accessing, monitoring, and controlling home appliances in a media exchange network by establishing a communication link between a communication initiation device and at least one home appliance and communicating at least one command from the communication initiation device to the at least one home appliance via the communication link. The at least one home appliance then generates at least one response to the at least one command. The commands may include turning the home appliance(s) on and off, parameter adjustment commands, access commands, monitoring commands, mode change commands, and programming commands. Appliance responses may include powering on, powering off, changing a mode of operation, sending a status to the communication initiation device, adjusting an operational parameter, and changing a programmed operational step.
    Type: Application
    Filed: December 31, 2013
    Publication date: April 24, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Jeyhan Karaoguz, James D. Bennett
  • Publication number: 20140115580
    Abstract: A set top box or like device utilizing virtualization techniques to isolate secure device resources from an untrusted software framework incorporated in the device. In one implementation, a first virtual machine container is provided for secure execution of a traditional set top box application, while a second virtual machine container is utilized to host a software framework or untrusted portions of a software framework. A secure access client/server interface is provided to support interactions between the first and second virtual machine containers. The software framework may comprise, for example, an Android framework supported by an underlying Linux operating system environment and isolated in a Linux resource container. Virtual container constructs in various embodiments may employ varying levels of hardware sandboxing, including use of dedicated processing resources in multi-processor environments.
    Type: Application
    Filed: December 20, 2012
    Publication date: April 24, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Marcus C. Kellerman, Narayan Rajgopal, Joshua Stults, Kevin Cernekee
  • Publication number: 20140112657
    Abstract: A service provisioning enabled management in Service Interoperability in Ethernet Passive Optical Network (SIEPON) switching subsystem. The delivery of network services to each of a plurality of subscribers coupled to an optical network unit (ONU) can be defined individually by the service provider. The service-specific functions within the ONU can be configured based on knowledge of the levels of provisioning of network services.
    Type: Application
    Filed: November 24, 2012
    Publication date: April 24, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Wael William Diab, Ryan Hirth, Lowell D. Lamb, Glen Kramer
  • Publication number: 20140111266
    Abstract: A level shifter and method are disclosed. In one embodiment, the level shifter includes a DC biasing component connected with both an AC coupling component and a high voltage output amplifier. The AC coupling component receives an input signal from a low voltage domain and output a first voltage signal. The DC biasing component is configured to bias the first voltage signal using a bias voltage based on a previous output signal in a high voltage domain. The high voltage output amplifier is configured to amplify the DC biased voltage signal in the high voltage domain and provide an output signal in the high voltage domain.
    Type: Application
    Filed: October 31, 2012
    Publication date: April 24, 2014
    Applicant: Broadcom Corporation
    Inventor: Erol Arslan
  • Publication number: 20140111272
    Abstract: A system and method for controlling performance and/or power based on monitored performance characteristics. Various aspects of the present invention may comprise an integrated circuit comprising a first circuit module that receives electrical power. A second circuit module may monitor one or more performance characteristics of the first circuit module and/or the integrated circuit. A third circuit module may, for example, determine power control information based at least in part on the monitored performance characteristic(s). The power control information may be communicated to power supply circuitry to control various characteristics of the electrical power. Various aspects of the present invention may also comprise an integrated circuit comprising a first module that monitors at least one performance characteristic of a first electrical device.
    Type: Application
    Filed: December 30, 2013
    Publication date: April 24, 2014
    Applicant: Broadcom Corporation
    Inventors: Neil Y. Kim, Pieter Vorenkamp
  • Publication number: 20140112348
    Abstract: Various methods and systems are provided for traffic flow management within distributed traffic. In one example, among others, a distributed system includes egress ports supported by nodes of the distributed system, cut-through tokens (c-tokens) including an indication of eligibility of the corresponding egress port to handle cut-through traffic, and a cut-through control ring to pass the c-tokens between the nodes. In another example, a method includes determining whether an egress port is available to handle cut-through traffic based upon a corresponding c-token, claiming the egress port for transmission of at least a portion of a packet, and routing it to the claimed egress port for transmission. In another example, a distributed system includes a first node configured to modify an eligibility indication of a c-token before transmission to a second node configured to route at least a portion of a packet based at least in part upon the eligibility indication.
    Type: Application
    Filed: December 20, 2012
    Publication date: April 24, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Brad Matthews, Puneet Agarwal
  • Publication number: 20140115408
    Abstract: Selection of a minimum voltage and/or maximum clock frequency in an integrated circuit is described. Selection of the minimum voltage and/or maximum clock frequency is accomplished by generating a timing error prediction signal and a timing error detection signal in a timing error module that is placed in a critical path in the integrated circuit.
    Type: Application
    Filed: October 24, 2012
    Publication date: April 24, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Ivan Andrejic, Terence Leslie Mackown
  • Publication number: 20140112128
    Abstract: Various methods and systems are provided for oversubscription buffer management. In one embodiment, among others, a method for oversubscription control determines a utilization level of an oversubscription buffer that is common to a plurality of ingress ports and initiates adjustment of an ingress packet rate of the oversubscription buffer in response to the utilization level. In another embodiment, a method determines an occupancy level of a virtual oversubscription buffer associated with an oversubscription buffer and initiates adjustment of an ingress packet rate in response to the occupancy level. In another embodiment, a rack switch includes an oversubscription buffer configured to receive packets from a plurality of ingress ports and provide the received packets for processing by the rack switch and a packet flow control configured to monitor an occupancy level of the oversubscription buffer and to initiate adjustment of an ingress packet rate in response to the occupancy level.
    Type: Application
    Filed: March 13, 2013
    Publication date: April 24, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Bruce Kwan, Brad Matthews