Patents Assigned to Broadcom
  • Patent number: 8332653
    Abstract: Secure operations and components may be integrated into a conventional processing system executing a standard operating system. A secure processing environment where trusted secure application code is executed may be provided for performing secure operations. In this environment, the applications and components may access all of the components in the system including secure components. An open processing environment is provided for performing conventional operations. Conventional application code may be executed in the open environment. In the open environment, access may only be provided to open components. That is, open applications and components may not be allowed to access the secure components in the system. In this way, a secure processing environment may be provided that allows secure and non-secure applications to be simultaneously executed while protecting sensitive data and operations.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: December 11, 2012
    Assignee: Broadcom Corporation
    Inventor: Mark Buer
  • Patent number: 8331430
    Abstract: A system includes at least one adaptive filter coupled to a first communication channel and at least one other communications channel. The at least one adaptive filter includes at least one set of adaptive filter coefficients. A memory stores at least one predetermined set of filter coefficient thresholds. The filter coefficient thresholds may be indicative of channel faults, channel to channel faults or a length of the channel. A controller is configured to compare the set of filter coefficients to the predetermined set of filter coefficient thresholds. The controller is configured to determine the information about the channels based on compare results.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: December 11, 2012
    Assignee: Broadcom Corporation
    Inventors: Peiqing Wang, Minshine Shih, Bruce H. Conway
  • Patent number: 8331456
    Abstract: Presented herein is a system, method, and apparatus for audio and video synchronization. In one embodiment, there is presented a method for displaying audio data and video data. The method comprises examining a plurality of portions of the audio data, where each of said plurality of portions of audio data is associated with a time stamp; examining a plurality of portions of the video data, where each of said plurality of portions of the video data is associated with a time stamp; decoding one of the portions of the video data; and decoding one of the portions of the audio data while decoding the one of the portions of the video data. The difference between the time stamp associated with the one of the portions of the video data and the time stamp associated with the one of the portions of the audio data is within a certain margin of error from a predetermined offset.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: December 11, 2012
    Assignee: Broadcom Corporation
    Inventors: Arul Thangaraj, Sandeep Bhatia
  • Patent number: 8330540
    Abstract: A method of processing a signal is disclosed. The method comprises generating a digital signal, converting the digital signal to an analog signal, and generating an amplified analog signal having distortions. The method further comprises converting the amplified analog signal to a feedback digital signal at a sample rate and updating a model of the distortions based on the feedback digital signal.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: December 11, 2012
    Assignee: Broadcom Corporation
    Inventor: Roy G. Batruni
  • Patent number: 8331294
    Abstract: A user's request via a portable or handheld wireless communication device (HWCD) to process data may result in discovery of one or more networked resources capable of handling the processing. One or more communication routes may be established between one or more discovered network resources and one or more of the HWCD and a networked terminating device. The portable HWCD may be configured as a gateway. The user's identity may be determined and the user's personal networking preferences may be acquired. Based user's preferences, a route may be established between discovered networked resources and one or more of the HWCD and the networked terminating device. The user's identity may be authenticated. Data may undergo rate and/or format conversion. The data may be protected by secure operations. One or more of the HWCD and the networked terminating device may consume or render the requested data.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: December 11, 2012
    Assignee: Broadcom Corporation
    Inventors: Alexander MacInnis, Jeyhan Karaoguz, Arya Behzad, Thomas Quigley, John Stuart Walley, Mark Buer
  • Publication number: 20120309325
    Abstract: Disclosed are various embodiments for an extremely high frequency transceiver employing a baseband module and a radio-frequency module. The baseband module and the radio-frequency module are connected by a coaxial cable. The coaxial cable carries a multiplexed signal that may include a direct current component, a clock reference, a control signal, and an intermediate frequency signal. The control signal encodes one or more commands for controlling the operation of the radio-frequency module. Multiple radio-frequency modules may be employed in some embodiments.
    Type: Application
    Filed: December 8, 2011
    Publication date: December 6, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Nick Carbone, Sean Nicolson, Koji Kimura, Brima Ibrahim, Jason A. Trachewsky
  • Publication number: 20120309468
    Abstract: A mobile phone that uses OS virtualization for minimizing power consumption in mobile phones is provided. Apparatus and methods may involve conserving processor power in a mobile phone according to the invention may include the following steps. A first step may be awakening a first processing core from a low power state in response to a first operating system (OS) thread. A following step may include processing the first OS thread using the first processing core. A next step may include determining whether utilization of the first processing core over a first time period has exceeded a predetermined threshold. The method may also include awakening a second processing core from a low power consumption state if utilization of the first processing core over a first time period has exceeded a predetermined threshold.
    Type: Application
    Filed: August 14, 2012
    Publication date: December 6, 2012
    Applicant: Broadcom Corporation
    Inventor: James King
  • Publication number: 20120311400
    Abstract: Single CRC polynomial for both turbo code block CRC and transport block CRC. Rather than employing multiple and different generation polynomials for generating CRC fields for different levels within a coded signal, a single CRC polynomial is employed for the various levels. Effective error correction capability is achieved with minimal hardware requirement by using a single CRC polynomial for various layers of CRC encoding. Such CRC encoding can be implemented within any of a wide variety of communication devices that may be implemented within a wide variety of communication systems (e.g., a satellite communication system, a wireless communication system, a wired communication system, and a fiber-optic communication system, etc.). In addition, a single CRC check can be employed within a receiver (or transceiver) type communication device for each of the various layers of CRC of a received signal.
    Type: Application
    Filed: July 27, 2012
    Publication date: December 6, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Ba-Zhong Shen, Tak K. Lee
  • Publication number: 20120311683
    Abstract: Disclosed are various embodiments for facilitating network security parameter distribution and generation in a converged network incorporating multiple heterogeneous link layer networking technologies. Embodiments are provided for connecting network devices through multiple heterogeneous link layer networking technologies using a converged network password. Embodiments are provided for connecting network devices through multiple heterogeneous link layer networking technologies using a pairing event protocol, such as, for example, a push button protocol.
    Type: Application
    Filed: June 28, 2011
    Publication date: December 6, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Philippe Klein, Avi Kliger
  • Publication number: 20120308208
    Abstract: A personal video recorder (PVR) enabled set-top box (STB) may be operable to store an advertisement and associated playback control information received from a media provider into a storage device in the PVR enabled STB, schedule the stored advertisement for viewing based on the associated playback control information. The PVR enabled STB may be operable to insert the stored advertisement into media content for one or more times based on the scheduling. The PVR enabled STB may be operable to cause display of the stored advertisement and the media content in different transport formats. At a forward/reverse playback position during a PVR playback, the PVR enabled STB may be operable to cause display of the stored advertisement when a play count associated with the stored advertisement is less than a count threshold at the forward/reverse playback position.
    Type: Application
    Filed: August 16, 2012
    Publication date: December 6, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Jeyhan Karaoguz, Xuemin Chen
  • Publication number: 20120311654
    Abstract: A wireless media network enables bridged control of multiple media devices via multiple different transport media. The system enables input devices to control various output devices by mapping the input devices to the output devices. The system can map inputs to controls for output devices to enable a user to control various output devices via inputs initially provided to a different input device in a media device network. Input information can be stored and assigned to a certain input device. Input devices can multicast to various different output devices using a common signal configuration. Signals between an input device and an output device can be use a substitute signal configuration that is to enable implementation by the output device. Signals can be exchanged between over various transport media by encapsulating signals prior to transport, which can include encoding signals with additional security protocols.
    Type: Application
    Filed: December 20, 2011
    Publication date: December 6, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: James F. Dougherty, III, Yasantha N. Rajakarunanayake, Patrick Loo, Jian Zhang
  • Publication number: 20120311312
    Abstract: Methods, systems, and computer program products are provided to improve performance in power-saving modes. In particular, improvements are detailed to initialization times after chip restart from a power down mode. These improved initialization times benefit many consumer electronics that rely on batteries and other onboard power supplies, while at the same time having to meet strict usability demands for system response times.
    Type: Application
    Filed: May 31, 2011
    Publication date: December 6, 2012
    Applicant: Broadcom Corporation
    Inventor: Farooq (Muhammad) Hameed
  • Publication number: 20120310531
    Abstract: Navigation system employing augmented labeling and/or indicia. Various embodiments provide very accurate and timely information to a user thereby minimizing the amount of time or effort that a user will need to interpret or translate any information and/or directions provided thereby. In one instance, a vehicular based navigational system, which can operate with one or more projectors, provides information to a user such that the user need not turn away from the actual field of vision (e.g., 3D, 2D, etc.). Labeling and/or indicia is/are projected within the actual field of vision of the navigation system user. In another instance, labeling and/or indicia are overlaid or included within photographic and/or video information corresponding to an environment depicted by the navigation system. Such a navigation system may be implemented within a variety of contexts including within a vehicle, within a handheld/portable device, within a headset/eyeglasses device, etc.
    Type: Application
    Filed: July 15, 2011
    Publication date: December 6, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Peyush Agarwal, Yasantha N. Rajakarunanayake
  • Publication number: 20120307814
    Abstract: Polling using B-ACK for occasional back-channel traffic in VoWIFI applications. Within wireless communication systems having a relatively asymmetric channel (e.g., relative more downstream traffic than upstream), certain upstream communications (e.g., acknowledgments (ACKs) and/or block acknowledgments (B-ACKs)) include indication therein (e.g., piggybacked therein) that a given downstream located communication device desires/needs to make upstream communication. In some instances, specificity is also provided therein to indicate the type of information to be transmitted upstream. Such a communication protocol mitigates (or eliminates) contention between upstream and downstream traffic in an environment with significantly more downstream traffic (e.g., such as ongoing downstream traffic that may include streaming video). A coordinating device (e.g.
    Type: Application
    Filed: July 12, 2011
    Publication date: December 6, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Peyush Agarwal, Joachim S. Hammerschmidt, Yasantha N. Rajakarunanayake, Praveen K. Gopala, George Kondylis
  • Publication number: 20120306530
    Abstract: A system may include a printed circuit board, a first component located on the printed circuit board, the first component having a first unique identifier and a processor located on the printed circuit board, the processor including a one time programming section. The processor may acquire the first unique identifier from the first component and store the first unique identifier in the one time programming section during the first time initialization. Upon subsequent initializations, the processor may acquire the first unique identifier from the first component and compare the first unique identifier to the stored first unique identifier. The processor may allow the subsequent initializations to proceed if the first unique identifier matches the stored first unique. The processor may disallow the subsequent initializations from proceeding if the first unique identifier does not match the stored first unique identifier.
    Type: Application
    Filed: August 14, 2012
    Publication date: December 6, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Nanfang Hu, Xuezhang Dong, Yan Wang
  • Publication number: 20120311173
    Abstract: Dynamic wireless channel selection and protocol control for streaming video utilizing transmission delay/packet loss information and channel utilization statistics. A transmission delay and packet loss monitor generates transmission delay information during the transmission of a video stream to remote wireless device(s) over a first wireless channel by timestamping and monitoring video packet(s) and associated transmission acknowledgement(s). The transmission delay information is compared to a predetermined threshold (e.g., a maximum tolerated delay threshold and/or total packet loss threshold) and, if the threshold is exceeded, a second wireless channel is selected for continued transmission of the video stream. In one mode, channel utilization statistics are likewise examined prior to a channel relocation event.
    Type: Application
    Filed: August 31, 2011
    Publication date: December 6, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Peyush Agarwal, Yasantha N. Rajakarunanayake, Joachim S. Hammerschmidt
  • Publication number: 20120307828
    Abstract: Embodiments relate to forwarding of packets in link aggregation environments. A method for forwarding a packet through an extended switch including a first port extender and a second port extender directly or indirectly communicatively coupled to respectively a first interface and a second interface of a controlling bridge includes, associating a first port extender interface of the first port extender with a global namespace or an interface-specific namespace. The method further includes receiving a packet through the first port extender interface, marking the received packet with an indication of the namespace configuration of the first port extender interface, processing the marked packet in the controlling bridge based at least in part upon the indication, and transmitting the processed packet out of the controlling bridge.
    Type: Application
    Filed: December 27, 2011
    Publication date: December 6, 2012
    Applicant: Broadcom Corporation
    Inventors: Puneet AGARWAL, Niranjan VAIDYA, Biju BABU
  • Publication number: 20120307872
    Abstract: Aspects of a method and system for interference suppression in WCDMA systems may include one or more circuits that are operable to receive a plurality of multipath signals via one or more receiving antennas. A plurality of weighting factor values may be computed based on the received multipath signals. Estimated signals may be based on the weighting factor values. Residual signals may be generated based on received signals and the estimated signals. Addback signals may be generated based on the estimated signals and the residual signals. Updated estimated signals may be generated based on the addback signals and the weighting factor values. Incremental signals may be generated based on the updated estimated signals and addback signals. Updated residual signals may be generated based on the incremental signals and previous residual signals. The interference suppressed signals may be generated based on the updated residual signals and updated estimated signals.
    Type: Application
    Filed: August 17, 2012
    Publication date: December 6, 2012
    Applicant: Broadcom Corporation
    Inventors: Mark HAHM, Wei Luo, Arkady Molev-Shteiman, Hongwei Kong, Xiao-Feng Qi, Li Fung Chang, Nelson Sollenberger
  • Publication number: 20120307886
    Abstract: Adaptive video encoding based on predicted wireless channel conditions. Based on at least one of a number of transmitter side indications of the available throughput of a wireless channel for video delivery, an encoder rate adaptation mechanism generates an estimate of the supportable throughput of the wireless channel under different operating conditions. An encoding parameter, such as encoder bit rate, is subsequently altered based on the estimated throughput value. In one instance, transmitter side throughput indicia is used to generate target encoder bit rates for multiple potential PHY data rates/channel MCS selections that may be used in video delivery. In anticipation of or immediately following a transition to one such PHY data rate/MCS selection, the encoder bit rate is altered in accordance with an associated target bit rate. In another mode, average transmit queue latency information is used to further regulate the encoder bit rate.
    Type: Application
    Filed: September 25, 2011
    Publication date: December 6, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Peyush Agarwal, James F. Dougherty, III, Yasantha N. Rajakarunanayake, Alexander G. MacInnis, James D. Bennett
  • Publication number: 20120309452
    Abstract: An apparatus includes an RFID transceiver, a processing module, and a wireless communication module. The RFID transceiver receives an RFID signal from a device and obtains communication information from the RFID signal. The processing module is operable to: determine a wireless communication protocol and device information from the communication information; receive an outbound data request; and generate outbound data in accordance with the outbound data request, wherein the outbound data includes at least a portion of the information. The wireless communication module converts outbound data into an outbound wireless signal in accordance with the wireless communication protocol.
    Type: Application
    Filed: August 20, 2012
    Publication date: December 6, 2012
    Applicant: BROADCOM CORPORATION
    Inventor: Ahmadreza (Reza) Rofougaran