Patents Assigned to Broadcom Corporation
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Publication number: 20130013925Abstract: Techniques are provided to authenticate components in a system. Users may enter credentials into an input device and the credentials may be authenticated and/or securely transmitted to the components. The components may then provide the credentials to a server in the system. Strong authentication may thus be provided to the effect that credentials associated with specific users have been received from specific components in the system. The server may then enable the components to access selected services.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Mark Buer, Ed Frank
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Publication number: 20130010857Abstract: A communication device is operable to manage communication of data streams, which comprise data encoded utilizing scheme that generate plurality of frames with logical grouping and/or inter-frame dependencies, based on determination of network payload parameters that are utilized for the data transmission. Exemplary encoding schemes comprise MPEG encoding, which generates data streams comprised I-frames, P-frames and/or B-frames. Network packets that are utilized to perform data communication are generated such that packet payloads comprise only data corresponding to a single frame and/or logical grouping within the encoded data stream. Feedback from networking subsystem in the communication device may be provided during processing of the data streams to enable use of network payload parameters during encoding operations. Frame sizes may be adjusted, for example, so that a size of each frame is multiple of a size of a payload of the network packets that are utilized in data communication.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Jeyhan Karaoguz, James D. Bennett
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Publication number: 20130010625Abstract: A method and apparatus of a wireless subscriber requesting an uplink (UL) grant size from a base station (BS) are disclosed. One method includes the subscriber analyzing traffic patterns of uplink data, the subscriber selecting a new grant size based on the analyzed traffic patterns, and the subscriber requesting the new grant size by signaling the new grant size to the BS.Type: ApplicationFiled: September 13, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventor: Brett Schein
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Publication number: 20130010901Abstract: Aspects of a method and system for decoding single antenna interference cancellation (SAIC) and redundancy processing adaptation using burst process are provided. A wireless receiver may decode bit sequences based on a first decoding algorithm that may utilize redundancy in the data and that may impose physical constraints. The receiver may also decode a received bit sequence based on a second decoding algorithm that utilizes SAIC. Received data may be processed in a burst process portion in either decoding algorithm. Burst processed data from one of the decoding algorithms may be selected based on signal-to-noise ratio and/or received signal level measurements. The selected burst processed data may be communicated to a frame processing portion of the corresponding decoding algorithm.Type: ApplicationFiled: September 13, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Arie Heiman, Huaiyu (Hanks) Zeng, Jie Lai, Yueheng Sun, Nelson Sollenberger, Yossy Pruzanski
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Publication number: 20130010962Abstract: An authorized user may be provided access to a service only when a wireless token assigned to the user is in the proximity of a computing device. A user's credential may be stored on an RFID token and an RFID reader may be implemented within a security boundary on the computing device, Thus, the credential may be passed to the security boundary without passing through the computing device via software messages or applications. The security boundary may be provided, in part, by incorporating the RFID reader onto the same chip as a cryptographic processing component, Once the information is received by the RFID reader it may be encrypted within the chip. As a result, the information may never be presented in the clear outside of the chip. The cryptographic processing component may cryptographically encrypt/sign the credential received from the token.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Mark Buer, Ed Frank, Nambi Seshadri
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Publication number: 20130010903Abstract: A mobile device in an OFDM system receives an OFDM signal comprising RS tones and data OFDM symbols. The received RS tones are extracted for channel estimation using a masking operation. Masking parameters are determined by matching channel time variance using corresponding time domain samples of the extracted RS tones. As approximated channel impulse responses of transmission channels, the time samples are masked to perform the channel estimation. The channel time variance comprising inter-carrier interference and delay spread are measured, respectively. A mean of differences in power between neighbor adjacent subcarriers of the extracted RS tones is used for the inter-carrier interference measurement. The delay spread measurement such as root-mean-squared (RMS) delay spread is calculated using the approximated channel impulse responses.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Mark Kent, Uri Landau
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Publication number: 20130012197Abstract: Aspects of a method and system for communication are provided. In this regard, a femtocell may receive messages from a plurality of different sources comprising one or more other femtocells, one or more cellular enabled communication devices, and one or more non-cellular network nodes. The femtocell may select, based on the received messages, a master clock within one of the plurality of different sources as a master clock for synchronization of the plurality of different sources. A femtocell clock, a global navigational satellite signal (GNSS) clock, a cellular base station clock, or a cellular enabled communication device clock may be selected as the master clock. The femtocell may transmit and/or receive synchronization messages to and/or from the one or more cellular enabled communication devices and the one or more non-cellular network nodes.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Wael William DIAB, Charles Abraham, Xuemin (Sherman) Chen, Vinko Erceg, Victor T. Hou, Jeyhan Karaoguz, Mark Kent
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Publication number: 20130010792Abstract: A system, method and computer program product is provided that allows an end user to monitor and/or control various data streams appearing on one or more customer premises equipment (CPE) interfaces of a residential gateway, even where the data streams are of different types such as voice, video or computer data. The invention provides a user interface, implemented as part of a CPE device or as a stand-alone device, that is accessed by an end user to transmit commands to a residential gateway. A processor within the residential gateway executes gateway monitoring and control software that receives the commands and, in response, performs the necessary routing and conversion of data streams to execute the desired monitoring and/or control functions.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventor: Charles E. Anderson, IV
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Publication number: 20130009811Abstract: A GNSS receiver in a wake up state during a standby mode may acquire ephemeris from received GNSS signals such as GPS signals and/or GLONASS signals. When subsequently transitioning from the standby mode to a normal mode operating at a high frequency clock, the acquired ephemeris may be utilized to generate a navigation solution for the GNSS receiver. The GNSS receiver in the wake up state during the standby mode may be switched to operate at the high frequency clock in order to receive GNSS signals. The GNSS receiver may extract complete ephemeris from the received GNSS signals, and may subsequently transition from the wake up state to a sleep state during the standby mode to save power. Radio frequency front-end components of the GNSS receiver may only be turned on to receive the GNSS signals. The GNSS receiver may transition between the standby mode and the normal mode.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Frank van Diggelen, Charles Abraham
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Publication number: 20130010877Abstract: Aspects of a method and system for redundancy-based decoding of video content are provided. A bit sequence comprising video content may be decoded in a multilayer process based on a decoding algorithm and at least one physical constraint. The decoding algorithm may be based on the Viterbi algorithm. Whether the bit sequence comprises video content may be determined based on information provided by a portion of a packet header or by packet priority information necessary for enabling quality of service applications. The physical constraint may be based on border, DC component, and/or low frequency continuity between neighboring discrete cosine transform (DCT) blocks. The physical constraint may also be based on the consistency of video data coded by a variable length coding (VLC) operation. At least one physical constraint test may be performed on selected estimated video bit sequences to select a decoded output video bit sequence.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Arie HEIMAN, Jeyhan Karaoguz
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Publication number: 20130010906Abstract: 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: ApplicationFiled: September 13, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Hongwei Kong, Li Fung Chang, Huaiyu Zeng
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Publication number: 20130010899Abstract: Methods and systems for loop-through for multi-band TV tuners and set-top box and/or TV set applications are disclosed and may include generating master and slave output signals from one or more low-noise amplifiers including master and slave stages. The master and slave stages may include parallel-coupled gain paths. Gate terminals and source terminals of input transistors for the master and slave stages may be directly coupled. The input transistors for the master and slave stages may share an inductor coupled to the source terminals and to ground. The master and slave stages may include cascode stages. VHF and UHF signals may be amplified in the multi-band receiver. The generated master output signal may be processed in the multi-band receiver, and may be utilized to generate I and Q output signals. A plurality of the slave output signals may be summed and communicated to a receiver external to the multi-band receiver.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Aristeidis Kyranas, Hamed Peyravi, Konstantinos Vavelidis, Nikolaos Kanakaris
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Publication number: 20130013782Abstract: Aspects of a method and system for predictive leasing of network services and applications based on a usage pattern may comprise a management entity that coordinates operation of one or more endpoint devices. A user profile associated with the one or more endpoint devices may be received by the management entity, wherein the management entity may utilize the user profile associated with the one or more endpoint devices and a usage pattern associated with the one or more endpoint devices to determine leasing information for the one or more endpoint devices. The management entity may be operable to communicate the determined leasing information to the one or more endpoint devices. The leasing information may comprise leasing services and/or applications to the one or more endpoint devices.Type: ApplicationFiled: September 13, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Yongbum Kim, Bruce Currivan, Wael William Diab, Jeyhan Karaoguz, Kenneth Ma, Michael Johas Teener
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Publication number: 20130010897Abstract: A method and apparatus is disclosed to map a sequence of data to Quadrature Amplitude Modulation (QAM) constellation symbols. The method and apparatus encodes only a portion of the sequence of data and leaves a remaining portion of the sequence of data unencoded. The encoded portion of the sequence of data and the remaining unencoded portion of the sequence of data are then mapped into modulation symbols of the QAM constellation. The encoded portion of the sequence of data selects subsets of the QAM constellation, and the remaining unencoded portion of the sequence of data determines a specific modulation symbol within each subset of the QAM constellation.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Lin He, Thomas J. Kolze, Ba-Zhong Shen, Gottfried Ungerboeck, Bruce J. Currivan
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Publication number: 20130009698Abstract: An electronic device includes a rechargeable battery, an electrical circuit, a battery safety circuit, and a power down mode circuit. The electrical circuit is configured to generate a power mode control signal. The power down mode circuit receives the power mode control signal. If the power mode control signal has a first value, the power down mode circuit is configured to force a voltage at a first port of the battery safety circuit to a voltage value that is less than an under voltage lock out (UVLO) threshold value of the battery safety circuit to transition the electronic device from a normal operating mode to a low current power down mode. The electronic device may further include a wake up mode circuit.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Domitille Esnard, John Walley, Louis Pandula
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Publication number: 20130009813Abstract: A GNSS enabled mobile device receives GNSS assistance data in a determined format from a central processing station communicatively coupled to a wide area reference network (WARN). The WARN comprises a first plurality of GNSS tracking stations from which usable signals are received by the central processing station, and a second plurality of GNSS tracking stations from which unusable or no signals are received by the central processing station. The central processing station generates the GNSS assistance data using a complete set of GNSS reference feeds of the WARN. The complete set of GNSS reference feeds comprises actual GNSS reference feeds from the first plurality of GNSS tracking stations and virtual GNSS reference feeds derived for the second plurality of GNSS tracking stations from processed actual GNSS reference feeds. The generated GNSS assistance data is reformatted into a determined format and is communicated to the GNSS enabled mobile device, accordingly.Type: ApplicationFiled: September 13, 2012Publication date: January 10, 2013Applicant: Broadcom CorporationInventors: Charles Abraham, David Albert Lundgren
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Patent number: 8350962Abstract: Described herein is a method and system for video format conversion. Aspects of the current invention may convert decoded video data from 4:2:2 format to 4:4:4 format. Aspects of the current invention may also convert decoded video data from 4:2:0 format to 4:4:4 format. Aspects of the current invention may further convert decoded video data from 4:2:0 format to 4:2:2 format. Aspects of the current invention may provide a region-aware conversion system that monitors the edges of mosaic windows in order to apply proper boundary conditions during the conversion process.Type: GrantFiled: February 13, 2008Date of Patent: January 8, 2013Assignee: Broadcom CorporationInventors: Genkun Jason Yang, Yao-Hua Steven Tseng
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Patent number: 8351468Abstract: As additional channels are added to a communication system for applications, such as standard density (SD) and eventually high density (HD) Video on Demand (VOD), additional capacity can be realized by reducing the time required to transmit content. A reduction of transmission time (or an increase of the transmission rate) can be achieved by bonding channels of the communication system. The bonded channels typically provide a statistical multiplexing gain because the additional bandwidth is treated as a large single channel for the download. Bonding channels of the communication system can provide high speed downloading of content, such as video content, far in excess of the playback rate. Using bonded channels can relax the Quality of Service (QoS) requirements of a data stream, such as a video stream, over an internet protocol (IP) network.Type: GrantFiled: April 5, 2005Date of Patent: January 8, 2013Assignee: Broadcom CorporationInventor: Thomas J. Quigley
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Patent number: 8352217Abstract: 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: GrantFiled: January 26, 2012Date of Patent: January 8, 2013Assignee: Broadcom CorporationInventors: Neil Y. Kim, Pieter Vorenkamp
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Patent number: 8351556Abstract: Methods and systems for processing signals in a receiver are disclosed herein and may include updating a plurality of filter taps utilizing at least one channel response vector and at least one correlation vector, for a plurality of received clusters, based on initialized values related to the at least one channel response vector and the at least one correlation vector. At least a portion of the received signal clusters may be filtered utilizing at least a portion of the updated plurality of filter taps. The update may be repeated whenever a specified signal-to-noise ratio (SNR) for the received signal clusters is reached. The initialized values may be updated during a plurality of iterations, and the update may be repeated whenever a specified number of the plurality of iterations is reached.Type: GrantFiled: July 28, 2011Date of Patent: January 8, 2013Assignee: Broadcom CorporationInventors: Mark Kent, Uri Landau, Severine Catreux-Erceg, Vinko Erceg, Ning Kong, Pieter Roux