Patents Assigned to Broadcom Corporations
  • Patent number: 8577291
    Abstract: A method and system for optimizing data throughput in a Bluetooth communication system is provided. The method may include determining the bit error rate (BER) of a first Bluetooth packet type of a plurality of Bluetooth packet types transmitted at a first power output level by a Bluetooth transmitter and selecting a second packet type from the plurality of Bluetooth packet types in response to determining the bit error rate. The different packet types may comprise DM1, DM3, DM5, DH1, DH3, DH5, HV1, HV2, HV3, 2DH1, 2DH3, 2DH5, 3DH1, 3DH3, and 3DH5 Bluetooth packets. The method may also include estimating the BER from the packet error rate (PER) of the first Bluetooth packet type, where the PER may be computed by comparing a number of packets of said first Bluetooth packet type with good CRCs to a number of packets of said first Bluetooth packet type with bad CRCs.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: November 5, 2013
    Assignee: Broadcom Corporation
    Inventor: Siukai Mak
  • Patent number: 8576745
    Abstract: A system and method for enhanced physical layer device autonegotiation. The autonegotiation process typically identifies the highest common denominator amongst various standardized modes of operation. Enhanced autonegotiation can be used to select a mode of operation that is not the highest common denominator. Enhanced autonegotiation can also identify a non-standardized mode of operation using next page messaging, additional physical signaling, or Layer 2 messaging.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: November 5, 2013
    Assignee: Broadcom Corporation
    Inventors: Wael William Diab, Scott Powell, Yongbum Kim
  • Patent number: 8576793
    Abstract: A wireless interface circuit transceives packetized data between a host module and a first external device using a frequency spectrum, wherein the packetized data is formatted in accordance with a first wireless communication protocol and wherein the packetized data includes an indication that the first external device is configured to use at least a portion of the frequency spectrum for communication via a second wireless communication protocol. A coexistence management module generates a wireless interface schedule that includes a least one contention free period reserved for communication via the second wireless communication protocol, and generates schedule data, based on the wireless interface schedule, for transmission to a plurality of external devices including the first external device.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: November 5, 2013
    Assignee: Broadcom Corporation
    Inventors: Mahesh Iyer, Raymond R. Hayes
  • Patent number: 8576727
    Abstract: A system and method for unique identifier exchange during auto-negotiation. Wired networks can include non-conformant bridges and/or repeaters that can erroneously forward link protocol frames such as LLDP. These present a problem for higher layer protocols that attempt to manage properties of the link. The unique identifiers exchanged during auto-negotiation can be passed up to higher layers for an integrity check of unique identifiers exchanged using higher layer protocols.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: November 5, 2013
    Assignee: Broadcom Corporation
    Inventors: Wael William Diab, Patricia A. Thaler
  • Patent number: 8576830
    Abstract: A mobile device receives a signal comprising a PSS and performs multiple frequency hypothesis testing (MFHT) on the received signal. The mobile device starts MFHT by applying different initial frequency offsets in corresponding MFH branches. Timing drift in MFHT is compensated based on corresponding initial frequency offsets. In this regard, a PSS correlation process is performed on the received signal in each MFH branch. Resulting PSS correlation data is buffered and processed in corresponding PSS timing hypothesis buffers. The timing position of samples is updated in the PSS timing hypothesis buffers based on corresponding initial frequency offsets. Energy associated with the PSS transmissions may be accumulated utilizing corresponding PSS correlation data at updated sampling positions. The received PSS is detected based on a maximum accumulated energy associated with the PSS transmissions. Information that comes from the detected PSS is utilized by the mobile device to camp on a corresponding cell.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: November 5, 2013
    Assignee: Broadcom Corporation
    Inventors: Francis Swarts, Mark Kent
  • Publication number: 20130291053
    Abstract: Embodiments of the present disclosure provide systems and methods for implementing a secure processing system having a first processor that is certified as a secure processor. The first processor only executes certified and/or secure code. An isolated second processor executes non-secure (e.g., non-certified) code within a sandbox. The boundaries of the sandbox are enforced (e.g., using a hardware boundary and/or encryption techniques) such that code executing within the sandbox cannot access secure elements of the secure processing system located outside the sandbox. The first processor manages the memory space and the applications that are permitted to run on the second processor.
    Type: Application
    Filed: June 7, 2012
    Publication date: October 31, 2013
    Applicant: Broadcom Corporation
    Inventors: Mark L. BUER, Jacob Mendel
  • Publication number: 20130285750
    Abstract: A power amplifier includes generation, tracking and usage of an envelope of an input RF signal. To improve upon the efficiency of the power amplifier, various configurations include using the tracked envelope, for example, an OFDM signal, to improve the average efficiency. Suitable hardware/software in the form of circuitry, logic gates, and/or code functions to generate and track an envelope of an input RF signal and modulate one or more of the input supply voltage, cascode gate bias or parallel PA branches using the tracked envelope.
    Type: Application
    Filed: June 27, 2012
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Debopriyo Chowdhury, Ali Afsahi
  • Publication number: 20130289382
    Abstract: An article of clothing includes a clothing fabric and a plurality of bio-medical units integrated into the clothing fabric. A bio-medical includes a power harvesting module, a communication module, a processing module, a functional module, a die, and an IC package. The die supports the power harvesting module, the processing module, the communication module, and the functional module. The IC package houses the die and includes a mechanism for adhering to the clothing fabric.
    Type: Application
    Filed: June 28, 2013
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Ahmadreza (Reza) Rofougaran, Jeyhan Karaoguz, Pieter Vorenkamp
  • Publication number: 20130286914
    Abstract: A Wireless Local Area Network (WLAN) system based upon peer-to-peer communications. A wireless terminal for peer-to-peer communications acts either as a WLAN master or as a WLAN slave. When the wireless terminal acts a master, the wireless terminal undertakes mastering duties that include transmitting a beacon interval in the frame cycle. When the wireless terminal is not tethered to a power source, mastering duties alternate according to a round-robin WLAN mastering cycle, wherein the wireless terminal acts the WLAN master during at least one frame cycle and acts the WLAN slave during other frame cycles to conserve an untethered power source of the wireless terminal.
    Type: Application
    Filed: June 28, 2013
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Stephen Palm, Edward H. Frank, Bruce E. Edwards, Jason A. Trachewsky
  • Publication number: 20130285848
    Abstract: An integrated radar system includes a processing module and a radar device. The radar device includes an antenna module, a configurable shaping module, and a configurable transceiver module. The processing module generates an outbound signal and a control signal to configure the integrated radar system. The configured transceiver module converts the outbound signal into an outbound wireless signal. The configured shaping module shapes the outbound wireless signal into a shaped signal. The antenna module transmits the shaped signal and then receives an inbound radar signal. The configured shaping module shapes the inbound radar signal into an inbound wireless signal. The configured transceiver module converts the inbound wireless signal into an inbound symbol stream. The processing module determines location information regarding an object based on the inbound symbol stream.
    Type: Application
    Filed: June 28, 2013
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Alfred Grau Besoli, Nicolaos G. Alexopoulos, Jesus Alfonso Castaneda
  • Publication number: 20130285135
    Abstract: According to one exemplary implementation, a semiconductor device includes a channel, a source, and a drain situated in a first semiconductor fin. The channel is situated between the source and the drain. The semiconductor device also includes a control gate situated in a second semiconductor fin. A floating gate is situated between the first semiconductor fin and the second semiconductor fin. The semiconductor device can further include a first dielectric region situated between the floating gate and the first semiconductor fin and a second dielectric region situated between the floating gate and the second semiconductor fin.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Frank Hui, Neal Kistler
  • Publication number: 20130287076
    Abstract: Communication processing paths include distortions, such as DC offset in the baseband analog path, local oscillator feed-through distortion, and nonlinearity of gm's and power amplifiers which are calibrated for, separately or in combination. The cascaded DC offset and nonlinear distortions are modeled separately or in combination using even-and-odd order polynomials. A loopback path from the output of one or more distortion causing devices passes through a measurement and calculation module. The calculation module calculates predistortion polynomial's coefficients which will be stored in a look-up table to be used by a baseband predistorter to calibrate the path. The look-up table is stored locally or remotely.
    Type: Application
    Filed: June 29, 2012
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Ali Afsahi, Utku Seckin, Colin Fraser, Navid Lashkarian, Konrad Kratochwil, Arya Reza Behzad, Dengwei Fu
  • Publication number: 20130287042
    Abstract: A dual channel mode of operation (DCM) for a home entertainment network that can provide aggregate throughput associated with channel bonding without requiring that every device in the network be capable of channel bonding.
    Type: Application
    Filed: April 27, 2012
    Publication date: October 31, 2013
    Applicant: Broadcom Corporation
    Inventors: Avi Kliger, Yitshak Ohana
  • Publication number: 20130286925
    Abstract: Channel characterization and training within multiple user, multiple access, and/or MIMO wireless communications. Within such communication systems, there can be a number of devices (e.g., STAs) that communicate with a single device (e.g., AP). A multi-cast sounding frame may be transmitted from a transmitting device to a number of receiving devices. Appropriate scheduling or ordering of feedback signals from some or all of the receiving devices may be performed explicitly (e.g., sounding frame sent from the transmitting device to a receiving device) or implicitly (e.g., control information sent from the transmitting device to the receiving device, sounding frame sent to the transmitting device from the receiving device). Such characterization and training is with respect to a channel or path in which data will subsequently follow. Such characterization and training can be performed in accordance with group membership (e.g., with respect to only some of the receiving devices).
    Type: Application
    Filed: June 28, 2013
    Publication date: October 31, 2013
    Applicant: Broadcom Corporation
    Inventors: Matthew James Fischer, Joonsuk Kim, Peiman Amini, Joseph Paul Lauer, Vinko Erceg
  • Publication number: 20130290638
    Abstract: A technique to provide ownership tracking of data assets in a multiple processor environment. Ownership tracking allows a data asset to be identified to a particular processor and tracked as the data asset travels within a system or sub-system. In one implementation, the sub-system is a cache memory that provides cache support to multiple processors. By utilizing flag bits attached to the data asset, ownership identification is attached to the data asset to identify which processor owns the data asset.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Flaviu Dorin Turean, George Harms
  • Publication number: 20130290637
    Abstract: A technique to provide hardware protection for bus accesses for a processor in a multiple processor environment where at least two zones are established to separate or segregate processor functionality. In one implementation, control registers within a cache memory that supports the multiple processors are loaded with addresses associated with access rights for a particular processor. Then, when an access request is generated, the registers are checked to authorize the access.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Flaviu Dorin Turean, Stephane Rodgers, George Harms, Joshua Stults
  • Publication number: 20130286938
    Abstract: Frame formatting for communications within single user, multiple user, multiple access, and/or MIMO wireless communications. A signal is processed within a communication device using at least two respective downclocking ratios (e.g., a first downclocking ratio applied to a first portion of the signal such as a frame or packet extracted there from, a second downclocking ratio applied to a second portion of the signal). Alternatively, a signal is divided into more than two respective portions, and different respective downclocking ratios are applied to those different respective portions (e.g., a first downclocking ratio applied to a first portion of the signal, and so on up to an n-th downclocking ratio applied to an n-th portion of the signal). Some implementations apply a singular or common downclocking ratio to more than one portion of the signal (which may be contiguous/adjacent or non-contiguous/non-adjacent within the signal).
    Type: Application
    Filed: April 12, 2013
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventor: Ron Porat
  • Publication number: 20130288628
    Abstract: An RF receiver section includes an adjustable antenna assembly, a low noise amplifier module, and a down conversion module. The adjustable antenna assembly is configured to provide a first receive antenna structure and a second receive antenna structure. The first and second receive antenna structures receive an inbound wide bandwidth RF signal that includes an interferer RF signal component and a desired inbound RF signal component. The effective polarization of at least one of the first and second receive antenna structures is adjusted to reduce signal strength of the interferer RF signal component.
    Type: Application
    Filed: June 28, 2013
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Ahmadreza (Reza) Rofougaran, Maryam Rofougaran
  • Publication number: 20130285468
    Abstract: A power over one-pair Ethernet approach. A data transformer is coupled to a single conductor pair using one or more direct current (DC) blocking elements that preserve an alternating current path. The data transformer enables a network device to transmit and receive data with a link partner device via the single conductor pair. Power transmission over the single conductor pair is enabled through the coupling of a power over Ethernet module to the single conductor pair using a diode that can be paired with a zener diode.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventor: James Yu
  • Publication number: 20130288612
    Abstract: A communications transceiver includes a shared multi-band mixer. Various configurations of the shared multi-band mixer include using suitable hardware/software in the form of circuitry, logic gates, and/or code functions to combine multi-band processing of RF signal conversion within a single shared mixer. Various configurations include separate or shared tuning and/or amplification of up-converted (mixed) multi-band communication bands. The communications transceiver processes each band separately within the single shared mixer.
    Type: Application
    Filed: June 27, 2012
    Publication date: October 31, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Ali Afsahi, Utku Seckin