Patents Assigned to Broadcom Corporation
  • Patent number: 9559713
    Abstract: An analog-to-digital converter (ADC) is used for dynamic tracking nonlinearity correction. The correction employs an analog sampling technique to determine the signal derivative by measuring the derivative current arising from sampling an analog input signal undergoing analog-to-digital conversion, at the sampling instant. The analog derivative sampling technique achieves significant reduction in power consumption with less complexity compared with a digital approach, with strong improvements in HD3, SDFR, and IM3 measures.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: January 31, 2017
    Assignee: Broadcom Corporation
    Inventors: Rong Wu, Tianwei Li
  • Patent number: 9560420
    Abstract: The present invention is an integrated cable modem tuner. In one embodiment, the upstream path and the downstream path are integrated on a common semiconductor substrate. The down-stream path can include a TV tuner and digital receiver portion that is integrated on a common semiconductor substrate with the power amplifier of the upstream path. In another embodiment, the TV tuner is implemented on a first semiconductor substrate and the digital receiver portion and the power amplifier are configured on a second semiconductor substrate. However, the two substrates are mounted on a common carrier so that the cable modem appears to be a single chip configuration to the user.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: January 31, 2017
    Assignee: Broadcom Corporation
    Inventors: Donald G. McMullin, Lawrence M. Burns, Leonard Dauphinee, Ramon A. Gomez, Loke Tan
  • Patent number: 9559066
    Abstract: The present disclosure outlines various systems and methods for detecting an optical fault injection within an electronic device and/or preventing the optical fault injection from introducing an exploitable abnormality within the electronic device. These various systems and methods can include systems and methods that can detect or prevent laser injection attacks, which can include one or more small footprint complementary metal oxide silicon (CMOS) light detection circuits, or structures that can shield one or more transistors from a bottom side laser injection attack.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: January 31, 2017
    Assignee: Broadcom Corporation
    Inventors: Nathan Hindman, Mark Buer
  • Patent number: 9560107
    Abstract: An apparatus and a system are provided to proxy one or more media signals between at least one local client device and at least one remote client device. For instance, the apparatus can include a first network interface, a rate controller and media transcoder, and a second network interface. The first network interface receives a plurality of media signals over a first communication network, where the plurality of media signals is encoded into at least one codec format. The rate controller and media transcoder transcodes one or more of the plurality of media signals into a different codec format based on channel and processing capabilities associated with one or more local client devices and one or more control messages. The second network interface transmits the one or more of the transcoded plurality of media signals to a respective plurality of remote client devices over a second communication network.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: January 31, 2017
    Assignee: Broadcom Corporation
    Inventors: Gordon Yong Li, Xuemin Chen
  • Patent number: 9560595
    Abstract: A communication device, such as a smart phone, receives operational parameters from a network controller. The operational parameters may include, as examples, bandwidth allocation, center frequency, and receive/transmit band assignments. The operational parameters (e.g., bandwidth allocation) may change on a subframe by subframe basis. In response to the operational parameters, the communication device determines a new configuration for an envelope tracking (ET) power supply. The communication device modifies the ET power supply to implement the new configuration. The new configuration may be chosen to adapt the ET power supply to meet the demands of the operation parameters, without excess power consumption.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: January 31, 2017
    Assignee: Broadcom Corporation
    Inventors: Sriraman Dakshinamurthy, Robert Gustav Lorenz
  • Patent number: 9560584
    Abstract: Apparatus and methods are provided for switching between a wireless local area network (LAN) and a cellular network for a user equipment's (UE) data communication by passively sensing the load on the wireless LAN. A method is disclosed that includes detecting an access point associated with a wireless LAN and receiving packets that are transmitted by other devices that are using the wireless LAN. The method can further include examining the received packets to estimate a data load of the wireless LAN and selecting between the wireless LAN and a cellular network based on the estimated data load.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: January 31, 2017
    Assignee: Broadcom Corporation
    Inventor: Kamesh Medapalli
  • Patent number: 9560577
    Abstract: User equipment (UE) includes an architecture for locating femtocells. The architecture implements a phased search approach. The phased search helps the UE find the correct femtocells in a time and power efficient manner, by performing the search in a way that matches the likely changes to femtocell configurations.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: January 31, 2017
    Assignee: Broadcom Corporation
    Inventors: Sudip Alexei Gupta, Abhishek Pandit
  • Patent number: 9559833
    Abstract: A first near field communication (NFC) device is disclosed that synchronizes a first carrier wave of the first NFC device to a second carrier wave of a second NFC device. The first NFC device observes a magnetic field having the first carrier wave modulated with information corresponding to the first NFC device and the second carrier wave modulated with information corresponding to the second NFC device. The first NFC device isolates the information corresponding to the second NFC device from the combined sequence of information to determine a frequency error and/or a phase error between the carrier waves. Finally, the first NFC device adjusts the frequency of the first carrier wave in accordance with the first frequency error and/or the phase of the first carrier wave in accordance with the first phase error to synchronize the carrier waves.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: January 31, 2017
    Assignee: Broadcom Corporation
    Inventors: Shengyang Xu, Dong-U Lee
  • Patent number: 9560609
    Abstract: Embodiments of this disclosure include methods in which spurs generated by the drifting of an oscillation frequency of an oscillation signal provided by a free-running oscillator may be minimized and/or eliminated from an output signal of a phase locked loop (PLL). Methods include minimizing the mixing gain between the oscillation signal and a power signal provided to the PLL. The oscillation signal and the power signal may be mixed in a phase frequency detector (PFD) included in the PLL. The minimizing of the mixing gain for the PFD also minimizes the degrading effect that the spurs have on the overall performance of the communications device. The mixing gain may be minimized by minimizing the impedance provided at nodes included in the PFD where the oscillation signal and the power signal mix. The mixing gain may also be minimized by maximizing the power supply rejection ratio for the PFD.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: January 31, 2017
    Assignee: Broadcom Corporation
    Inventors: Nikolaos Haralabidis, Ioannis Kokolakis, Georgios Konstantopoulos
  • Publication number: 20170026869
    Abstract: A system for operating a portable communication device includes a module to operate the portable communication device in a first mode. The system may provide telephony service to a user at a first performance level. The system may determine to operate the portable communication device in a power-save mode that is different from the first mode. The system may operate the portable communication device in the power-save mode and provide telephony service to the user at a second performance level different from the first performance level.
    Type: Application
    Filed: September 7, 2012
    Publication date: January 26, 2017
    Applicant: Broadcom Corporation
    Inventors: Chun-ying Chen, Pieter Vorenkamp, Neil Y. Kim, Sumant Ranganathan
  • Publication number: 20170026988
    Abstract: The present disclosure is directed to systems, apparatuses, and methods for operating a wireless local area network (WLAN) modem to perform WLAN channel change in a WLAN environment that is inhabited by radar devices, and therefore subject to a Dynamic Frequency Selection (DFS) requirement defined by the appropriate WLAN governing standards. Specifically, the present disclosure is directed to an apparatus and method for reducing or eliminating the amount of time in which a WLAN transceiver cannot transmit/receive data traffic while listening for radar signals on a channel allocated to radar devices for the minimum listening time specified by DFS.
    Type: Application
    Filed: July 21, 2016
    Publication date: January 26, 2017
    Applicant: Broadcom Corporation
    Inventors: Yongfang GUO, Ling SU, Rohit V. GAIKWAD
  • Patent number: 9554114
    Abstract: A system is provided for generating a three dimensional image. The system may include a processor configured to generate a disparity map from a stereo image, adjust the disparity map to compress or expand a number of depth levels within the disparity map to generate an adjusted disparity map, and render a stereo view of the image based on the adjusted disparity map.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: January 24, 2017
    Assignee: Broadcom Corporation
    Inventor: Hyeong-Seok Victor Ha
  • Patent number: 9553848
    Abstract: Methods and systems for processing video data are disclosed herein and may comprise receiving within a single mobile multimedia processor chip integrated within a mobile device, a secure key from an off-chip device integrated within the mobile device. The secure key may be decrypted within the single mobile multimedia processor chip, utilizing an on-chip key. The decrypted secure key may be stored within the single mobile multimedia processor chip. The received encrypted data may be decrypted within the single mobile multimedia processor chip, using the stored, decrypted secure key. The on-chip key may be stored within a one-time programmable (OTP) memory in the single mobile multimedia processor chip. The stored on-chip key may be retrieved from the OTP memory for the decrypting. The stored decrypted received secure key may be encrypted utilizing the on-chip key stored within the single mobile multimedia processor chip.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: January 24, 2017
    Assignee: Broadcom Corporation
    Inventors: Viresh Rustagi, Christopher Wilson, Christopher Boross
  • Patent number: 9554177
    Abstract: Systems and methods for transmitting packets over a network of communication channels are provide. A system according to the invention may include first and second nodes in communication with a coax backbone. The first node may further include a retransmission buffer. The system may also include a network access coordinator operative to coordinate access of the nodes to the coax backbone. In a time period at least one first packet is transmitted by the first node to the second node. The first packet may include an indication that retransmission service is applied. The first packet may also include a indication of the length corresponding to the packet. If, during the first time period the packet is not received by the second node, the second node is operative to send a retransmission request to the network access coordinator.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: January 24, 2017
    Assignee: Broadcom Corporation
    Inventors: Yitshak Ohana, Philippe Klein, Avi Kliger
  • Patent number: 9554396
    Abstract: A wireless local area network (WLAN) method and device to provide dual band (DB) operation of the WLAN device, the DB operation including communication in a first frequency band with a first device and communication in a second frequency band with a second device, the WLAN device including first network interface circuitry to support communication in the first frequency band with the first device, second network interface circuitry to support communication in the second frequency band with the second device, and a processor to generate at least one action frame that includes information regarding a duration of time during which the WLAN device will be unavailable for communication, and to enable transmission of the at least one action frame to the first device or to the second device.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: January 24, 2017
    Assignee: Broadcom Corporation
    Inventor: Deepak Kumar Damodaran
  • Patent number: 9553714
    Abstract: The problem with duty-cycle correction circuits used by conventional frequency doublers is that they typically analog solutions, such as variable delay lines with long chains of inverters or buffers, that directly adjust the reference signal used by a phase-locked loop (PLL). These solutions can considerably increase the noise (e.g., thermal noise and supply noise) of the reference signal, as well as the overall power consumption and cost of the PLL. Rather than directly correct the duty-cycle of the reference signal, the present disclosure is directed to an apparatus and method for measuring the period error between adjacent cycles of a frequency doubled reference signal in terms of cycles of the output signal generated by the PLL (or some other higher frequency signal) and adjusting the division factor of the PLL frequency divider to compensate for the measured period error.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: January 24, 2017
    Assignee: Broadcom Corporation
    Inventors: Fazil Ahmad, Pin-En Su, William Huff, Greg Unruh
  • Publication number: 20170017484
    Abstract: A system, method, and computer program product for booting a device are provided herein. The method includes the steps of synchronizing the device based on a downstream signal from a second device, receiving a software from the second device for booting on a reserved downstream channel of the second device, and storing the received first software in a volatile memory. The device does not pre-store the software in a non-volatile memory.
    Type: Application
    Filed: September 27, 2016
    Publication date: January 19, 2017
    Applicant: Broadcom Corporation
    Inventors: Eli ELMOALEM, David AVISHAI, Asaf KOREN
  • Publication number: 20170018622
    Abstract: An Ultra Thin Body and Box (UTBB) fully depleted silicon on insulator (FDSOI) field effect transistor (FET) employing a split gate topology is provided. A gate dielectric layer is disposed beneath a gate structure and in contact with a channel layer of the device. The gate dielectric layer contains two portions, a thin portion and a thick portion. The thin portion is arranged and configured to reduce a trans-conductance of the device, while a thick portion is arranged and configured to increase the break down voltage of the device. The device further contains a bulk region that can be electrically connected to voltage source to provide control over the threshold voltage of the device.
    Type: Application
    Filed: October 30, 2015
    Publication date: January 19, 2017
    Applicant: Broadcom Corporation
    Inventor: Akira ITO
  • Publication number: 20170018618
    Abstract: A field effect transistor (FET) with raised source/drain region of the device so as to constrain the epitaxial growth of the drain region. The arrangement of the spacer layer is created by depositing a photoresist over the extended drain layer during a photolithographic process.
    Type: Application
    Filed: October 30, 2015
    Publication date: January 19, 2017
    Applicant: Broadcom Corporation
    Inventors: Akira ITO, Shom PONOTH
  • Patent number: 9547080
    Abstract: A gaming object includes an orientation sensor that generates orientation data in response to the orientation of the gaming object. An actuator that generates interaction data in response to an action of a user. A transceiver sends an RF signal to a game device that indicates the orientation data and the interaction data. The game device generates display data for display on a display device that contains at least one interactive item, and wherein the at least one interactive item is interactive in response to the orientation data and the interaction data.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: January 17, 2017
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Maryam Rofougaran, Nambirajan Seshadri, Brima B. Ibrahim, John Walley, Jeyhan Karaoguz