Patents Assigned to Broadcom
  • Publication number: 20110007843
    Abstract: An FM transmitter operates at low power by maintaining a substantially constant transmit voltage over the FM frequency band. A transmit signal strength indicator (TSSI) is provided at the output of the FM transmitter to measure the power at the output of the power amplifier. The TSSI generates a power control signal indicative of the output power and inputs the power control signal to the baseband processor. The baseband processor generates gain control signals to control the gain of various analog stages of the FM transmitter based on the power control signal.
    Type: Application
    Filed: July 7, 2009
    Publication date: January 13, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: Shahla Khorram, Frank (Bo-Shiou) Ke, Amir Ibrahim
  • Patent number: 7870582
    Abstract: Herein described are at least a method and a system for providing an extended forecast of scheduled video programming information provided by a multimedia provider. The extended forecast processes electronic program data (EPG) provided by the multimedia provider, such that a long term program guide (LTPG) may be developed. The LTPG provides a forecast of programs to be broadcasted that extends beyond what the EPG may provide. The method generates the LTPG by utilizing algorithms that compare newly received EPG data against historically processed EPG data. The system comprises a controller, a processor used for extracting EPG data from a signal, a memory that stores software, and a remote sensor capable of receiving signals transmitted by a remote control. When executed by the controller, the software implements the algorithms that generate the LTPG.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventors: Joshua Robey, Don H. Shulsinger
  • Patent number: 7869590
    Abstract: In a wireless communication system, a method and system for a hardware accelerator for implementing the f9 integrity algorithm in WCDMA compliant handsets are provided. Intermediate variables may be initialized in an integrity function and a first processing block of bits and at least one additional processing block of bits may be generated for the integrity function from a padded string generated from input variables. Values for a first and a second processing variable may be generated for each processing stage based on a corresponding processing block of bits and on immediately generated previous first and second processing values. The first processing value may be generated utilizing a KASUMI operation after an indication that an immediately previous generated first processing value is available. An authentication code may be generated based on a last of the second processing values and a modified integrity key.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventors: Srinivasan Surendran, Ruei-Shiang Suen
  • Patent number: 7870321
    Abstract: An extended computing unit includes a connection module, memory, and hardware. The memory is operable to store one or more computer-level user applications, one or more exclusive extended computing unit user applications, an exclusive extended computing unit operating system, and an operating system extension of a computer-level operating system. When the connection module is not coupled to a handheld computing unit, the hardware is operable to execute the extended computing unit exclusive operating system, detect a request for activation of an extended computing unit exclusive user application of the one or more extended computing unit exclusive user applications, and execute a least a portion of the extended computing unit exclusive user application.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 7869779
    Abstract: A method and system for processing channels in a FM communication system are provided. The FM communication system using the method or program may include adjusting a tuning frequency of a FM receiver for scanning and detecting an FM channel based on one or more of knowledge of location of said FM receiver, received signal strength indicator (RSSI), and/or carrier error of a related FM signal. Frequency offsets and channel spacing of the detected FM channels may be derived based on a self measurement routine. The aforementioned information may be preprogrammed, updated from a previous scan, or from external inputs to configure the receiver for subsequent selective tuning.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventors: John Stuart Walley, Rafael Sotomayor, Prasan Kumar Pai
  • Patent number: 7870401
    Abstract: A system and method for power over Ethernet (PoE) provisioning for a computing device using a network profile. Various types of power management information can be used in a process for determining a power request/priority. Power management information such as user information or device information can be stored in a profile in a network database. This network database can be accessed by a switch in determining a power request/priority for a computing device.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventors: Wael William Diab, Stephen Bailey
  • Patent number: 7869781
    Abstract: Certain aspects of a method and system for mitigating effects of pulling in multiple phase locked loops in multi-standard systems may include selecting an input frequency range of operation at a voltage controlled oscillator based on a particular wireless band of operation in a system that handles a first wireless communication protocol and a second wireless communication protocol. An image rejection mixer may be enabled to generate an output signal for the particular wireless band of operation based on mixing a plurality of received signals within a selected frequency range. An in-phase (I) component and a quadrature (Q) component of the generated output signal may be generated by utilizing a RC-CR quadrature network.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventors: Qiang Li, Razieh Roufoogaran, Arya Behzad, Dandan Li, Hung-Ming Chien
  • Patent number: 7869456
    Abstract: A system and method is presented that uses hardware at a central node to determine if bandwidth being provided to a remote node in accordance with an unsolicited grant service (UGS) flow requires adjustment. In one embodiment, the hardware performs this function by comparing information in two consecutively-received UGS extended headers from the same remote device. If the information in the current and previous UGS extended headers differ, then an indication is provided to software of the central node that the bandwidth being provided to the remote node requires adjustment.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventors: Niki Pantelias, Kenneth G. Zaleski, II, Gale Shallow, Lisa Denney
  • Patent number: 7869777
    Abstract: In RF transceivers, a method and system for a second order input intercept point (IIP2) correction are provided. A DC offset sensor may detect DC offset voltages produced by blocker signals in ā€œIā€ and ā€œQā€ signal component paths in an RF receiver. The DC offset sensor may generate control signals which may be utilized by a first and second injection circuits to generate DC offset currents that compensate for the DC offset voltages in the signal component paths. An injection circuit may utilize current drivers to generate binary weighted currents which may be added together to produce a DC offset current. The polarity of the DC offset current and the selection of which current drivers to use may be determined by the control signals. A calibration voltage may also be utilized to correct or adjust the gain in the injection circuit.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventor: Hooman Darabi
  • Patent number: 7869238
    Abstract: An N-way mode CAM (content addressable memory) array includes M rows that each contain N subwords. Each of the N subwords has a respective mode cell. Additionally, a mode input bus is coupled to each mode cell of each of the N subwords, and a data input bus is coupled to each of the M rows. The mode input bus and the data input bus can uniquely identify as a match a single subword or a plurality of subwords in one of the M rows during a search operation. The N-way mode CAM further includes a row address encoder/generator coupled to each of the M rows, and an address output bus coupled to each of the row address encoder/generators. The mode input bus is also coupled to each of the row address encoder/generators. A uniquely identified single subword address may be outputted on the address output bus.
    Type: Grant
    Filed: May 10, 2008
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventor: Christopher Gronlund
  • Patent number: 7869782
    Abstract: A local oscillator (LO) signal generator that has a reference phase-locked loop (PLL), a receiver LO PLL and a transmitter LO PLL. A reference PLL is coupled to receive a reference clock input and to generate a reference PLL signal at its output, which then drives a receiver PLL and a transmitter PLL. The receiver PLL is coupled to receive the reference PLL signal and to use the reference PLL signal as its reference input to generate a receiver LO signal at its output. The transmitter PLL is coupled to receive the reference PLL signal and to use the reference PLL signal as its reference input to generate a transmitter LO signal at its output.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventors: Sofoklis E. Plevridis, Konstantinos D. Vavelidis, Theodoros Georgantas, Ilias A. Bouras
  • Patent number: 7869541
    Abstract: Aspects of a method and system for direct and polar modulation using a two input PLL are presented. Aspects of the system may include generating digital signals Wn and Vn from an input data signal Un and a feedback signal Yn. The generated digital signals Wn and Vn combined may carry the information content of Un while they compensate the non-idealities of the two-input analog phase locked loop (PLL). The digital signal Wn, which may be scaled appropriately in frequency, and the digital signal Vn may be provided as inputs to the PLL. The feedback signal Yn may be a digital signal that may correspond to the analog feedback signal Pt that may be generated by the PLL. Accordingly, the PLL may be adaptively controlled via the digital signals Wn and Vn for properly transmitting the input data signal Un.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventors: Emmanouil Frantzeskakis, Georgios Sfikas
  • Patent number: 7869771
    Abstract: Various embodiments are disclosed relating to wireless transmitters, and also relating to multi-band transformers. According to an example embodiment, an apparatus may include a multi-band transformer configured to receive as an input a signal associated with a first frequency band or a signal associated with a second frequency band. The transformer may include one or more inputs and a first output and a second output. The transformer may also include one or more switches coupled to the transformer and configured to selectively output a received input signal onto the first output and/or the second output of the transformer.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventor: Alireza Zolfaghari
  • Patent number: 7870436
    Abstract: A system and method for tracing acceleration in an embedded device. Various embedded devices that generate debug trace output for which the usage of the processor can benefit from optimization include mobile phones, TV set-top-boxes, and networking equipment. Tracing acceleration is accomplished using a logic unit that is implemented in hardware, which thereby enables the processing of tracing data to be handled in parallel to the operation of the processor.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventor: James King
  • Patent number: 7867816
    Abstract: Provided is a method and system for designing an integrated circuit (IC) substrate, the substrate being formed to include at least one die. The method includes providing at least portions of IC power and a grounding function on a metal 2 substrate layer and utilizing all of a metal 3 substrate layer for the grounding function. Portions of the metal 2 layer and a metal 4 layer are utilized for the IC power, wherein all of the IC power is centralized underneath the die.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventor: Edmund Law
  • Patent number: 7869411
    Abstract: A network device and a method of handling a frame in a network device defining a common header for each rule in a rules table of a search engine, wherein the common header comprises a source port specifying a corresponding rule to be applied to a port or ports, and a frame format specifying a format applied to the corresponding rule. A port receives a frame, with the frame having multiple field values. A pre-parser parses the received frame to obtain the field values and corresponding slices. A search engine receives the slices and determines matches between the slices and the common header of each rule in the rules table. A policy table performs indexing based on the determined matches to obtain an action entry. An action resolution takes an action based on the obtained action entry.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventor: Shrjie Tzeng
  • Patent number: 7868696
    Abstract: Aspects of a method and system for a highly efficient power amplifier (PA) utilizing dynamic biasing and predistortion are presented. Aspects of the system may include a processor that enables computation of a value of a variable bias component of a bias current based on a bias slope value and an amplitude of an envelope input signal. The processor may enable computation of a value of the bias current based on the selected constant bias current component value and the variable bias current component value. A PA may enable generation of an output signal in response to a generated baseband signal by utilizing the bias current to amplify an amplifier input signal. The bias current may be generated based on the envelope input signal. A feedback signal may be generated based on the output signal, which may be used to predistort a subsequent baseband signal.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventors: Arya Behzad, Ali Afashi, Vikram Magoon
  • Patent number: 7870332
    Abstract: Various aspects of the invention provide a system and method of operating a data storage drive using any one of one or more data storage devices. In a representative embodiment, a data storage device may be used in a data network and may be referred to as a network attached storage device. Aspects of the invention insure that a data storage drive that that is transferred from a first data storage device to a second data storage device retains the same operational functionality it had when its was operated from the first data storage device.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventor: Christopher S. Wilson
  • Patent number: 7869500
    Abstract: A digital video signal encoder and method for detecting and encoding noise is disclosed. In a frame in a video signal, the variance of at least four macroblock luminance blocks is calculated. The Log2 of the minimum of these variances is determined. A running sum of the Log2 calculations is calculated and compared to a noise threshold to determine whether or not the frame contains noise. In one embodiment, a frame is determined to contain noise if the running sum is greater than a noise threshold and encodes the remaining portion of the frame as noise. In another embodiment, a current frame is determined to contain noise and is encoded as noise if the previous frame contained noise. The present invention may encode noise by overriding the original bit rate quantiser scale and/or removing at least one high frequency from a noise block using a DCT filter.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: January 11, 2011
    Assignee: Broadcom Corporation
    Inventor: Itzik Yankilevich
  • Publication number: 20110002219
    Abstract: Group identification and definition within multiple user, multiple access, and/or MIMO wireless communications. A group identification definition field may be transmitted to a number of receiving devices for use in interpreting current or subsequently received packets that include a group identification field (group ID). The group ID can serve a number of functions such as indicating those receiving devices for which the packet is intended, the identification of fields within the packet corresponding to the various devices, certain parameters (e.g., code type, code rate, modulation type, etc.) associated with such fields within the packet, etc. The group identification definition field may be updated or modified to allow for modification of the manner in which subsequent packets, including respective group IDs, are processed. One of a variety of events may direct the group identification definition field may be updated or modified.
    Type: Application
    Filed: June 8, 2010
    Publication date: January 6, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: JOONSUK KIM, MATTHEW JAMES FISCHER, PEIMAN AMINI, JOSEPH PAUL LAUER, VINKO ERCEG, CARLOS H. ALDANA, ERIC J. OJARD, SIRIKIAT LEK ARIYAVISITAKUL