Patents Assigned to Broadcom Corporation, a California Corporation
  • Publication number: 20080280574
    Abstract: A radio frequency (RF) transmitter includes a baseband processing module, an up conversion module, a power amplifier module, and an antenna assembly. The baseband processing module is coupled to convert outbound data into a first outbound symbol stream and a second outbound symbol stream and to generate an adjust signal. The up conversion module is coupled to convert the first outbound symbol stream into a first up converted signal and to convert the second outbound symbol stream into a second up converted signal. The power amplifier module is coupled to amplify the first and second up converted signals to produce first and second outbound RF signals. The antenna assembly is coupled to transmit the first and second outbound RF signals, wherein the antenna assembly adjusts at least one of amplitude and phase of at least one of the first and second outbound RF signals based on the adjust signal.
    Type: Application
    Filed: May 11, 2007
    Publication date: November 13, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Maryam Rofougaran
  • Publication number: 20080282129
    Abstract: Operational parameter adaptable LDPC (Low Density Parity Check) decoder. A novel means is presented by which LDPC coded signal can be decoded, and any one or more operational parameters can be adjusted during the decoding processing. For example, the original information extracted from a received LDPC coded signal (e.g., log likelihood ratios (LLRs)), can be modified during (or before) the iterative decoding processing performed in accordance with decoding an LDPC coded signal. Such modification of an operational parameter can include any one or combination of scaling, compression (and expansion/decompression), adding an offset to or subtracting an offset from, scaling, rounding, and/or some other modification of an operational parameter. The bit (or variable) edge messages and/or the check edge messages can also undergo modification during decoding processing.
    Type: Application
    Filed: May 30, 2007
    Publication date: November 13, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventor: Andrew J. Blanksby
  • Publication number: 20080280656
    Abstract: A technique to use a power management unit (PMU) sequencer to control switching of a plurality of functional modules between two or more power modes. The PMU sequencer sequences through a hierarchical order of turn-on and turn-off sequences based on dependencies established for each of the functional modules. In addition to the dependencies, turn-on and turn-off delay times are established for each of the functional modules.
    Type: Application
    Filed: May 9, 2007
    Publication date: November 13, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Mark Gonikberg, Jay Pattin, Wai Ki (Keno) Yeung
  • Publication number: 20080280581
    Abstract: A radio frequency (RF) receiver includes an antenna assembly, a low noise amplifier module, a down conversion module, and a baseband processing module. The antenna assembly is coupled to receive an inbound RF signal that includes a first signal component and a second signal component. The antenna assembly adjusts amplitude and/or phase of the first and/or second signal components to produce an adjusted inbound RF signal based on an adjust signal. The low noise amplifier module amplifies the adjusted inbound RF signal to produce an amplified inbound RF signal. The down conversion module converts the amplified inbound RF signal into a first inbound symbol stream corresponding to the first signal component and into a second inbound symbol stream corresponding to the second signal component. The baseband processing module converts the first and second inbound symbol streams into inbound data and to generate the adjust signal.
    Type: Application
    Filed: May 11, 2007
    Publication date: November 13, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Ahmadreza Reza Rofougaran, Maryam Rofougaran
  • Publication number: 20080279138
    Abstract: An circuit includes a first wireless interface circuit that transceives packetized data between a host module and a first external device in accordance with a first wireless communication protocol. A second wireless interface circuit transceives packetized data between the host module and a second external device in accordance with a second wireless communication protocol. The second wireless interface circuit includes at least one module that is shared with first wireless interface circuit, the module having a first state where the module is operational and a second state corresponding to a low-power state. The first wireless interface circuit and the second wireless interface circuit operate in accordance with a wireless interface schedule that includes a first time interval where the first wireless interface device and the second wireless interface device contemporaneously use the at least one module in the first state and a second time interval where the at least one module is in the second state.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 13, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Mark Gonikberg, Prasanna Desai, Brima B. Ibrahim
  • Publication number: 20080280571
    Abstract: A radio frequency (RF) transceiver includes a baseband processing module, a configurable receiver section, a configurable transmitter section and a configurable antenna assembly. The baseband processing module converts outbound data into an outbound symbol stream, converts an inbound symbol stream into inbound data and generates a transmit adjust signal and a receive adjust signal. The receiver section converts an inbound RF signal into the inbound symbol stream. The transmitter section converts the outbound symbol stream into an outbound RF signal. The antenna assembly receives the inbound RF signal via a first antenna structure and transmits the outbound RF signal via a second antenna structure. The first antenna structure and/or the configurable receiver section adjusts phase and/or amplitude of the inbound RF signal in accordance with the receive adjust signal.
    Type: Application
    Filed: May 11, 2007
    Publication date: November 13, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Maryam Rofougaran
  • Publication number: 20080279264
    Abstract: A circuit includes a first wireless interface circuit that communicates packetized data to a first external device in accordance with a first wireless communication protocol. A second wireless interface circuit communicates packetized data to a second external device in accordance with a second wireless communication protocol. A plurality of signal lines communicate at least four lines of cooperation data between the first wireless interface circuit and the second wireless interface circuit, wherein the cooperation data relates to cooperate transceiving in a common frequency spectrum.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 13, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Prasanna Desai, Mark Gonikberg, Brima B. Ibrahim, Edward H. Frank
  • Publication number: 20080279163
    Abstract: A wireless communication device includes a host module. A first wireless interface device transmits a first outbound packet in accordance with a first wireless communication protocol at a first power level and a first rate during a first time interval and that transmits a second outbound packet at a second power level and a second rate during a second time interval, wherein the first power level is less than the second power level and wherein the second rate is less than the first rate. A second wireless interface device transceives data between the host module and a second external device during the second time interval in accordance with a second wireless communication protocol. An antenna section provides at least one radio frequency communication path between the first wireless interface device and the first external device and between the second wireless interface device and the second external device.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 13, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventor: Prasanna Desai
  • Publication number: 20080282022
    Abstract: A technique to identify portions of software that does not change over time, in order to store that portion in ROM, instead of RAM, to reduce RAM size. The smaller RAM conserves space on a chip and consumes less power. The technique allows wireless devices, such as cell phones, to use less RAM.
    Type: Application
    Filed: May 9, 2007
    Publication date: November 13, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Yury Gonikberg, Guillermo Loyola, Curt McDowell
  • Publication number: 20080274713
    Abstract: A circuit includes a global positioning system (GPS) receiver that receives a GPS signal and that generates GPS position data based on the GPS signal. A wireless receiver converts an inbound RF signal into an inbound symbol stream. A processing module converts the inbound symbol stream into inbound data that includes a motion parameter and generates position information based on at least one of the GPS position data and the motion parameter.
    Type: Application
    Filed: May 2, 2007
    Publication date: November 6, 2008
    Applicant: Broadcom Corporation a California Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Publication number: 20080273579
    Abstract: A programmable antenna assembly includes a configurable antenna structure, a configurable antenna interface, and a control module. The configurable antenna structure includes a plurality of antenna elements that, in response to an antenna configuration signal, are configured elements into at least one antenna. The configurable antenna interface module is coupled to the at least one antenna and, based on an antenna interface control signal, provides at least one of an impedance matching circuit and a bandpass filter. The control module is coupled to generate the antenna configuration signal and the antenna interface control signal in accordance with a first frequency band and a second frequency band such that the at least one antenna facilitates at least one of transmitting and receiving a first RF signal within the first frequency band and facilitates at least one of transmitting and receiving a second RF signal within the second frequency band.
    Type: Application
    Filed: May 2, 2007
    Publication date: November 6, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Maryam Rofougaran
  • Publication number: 20080267149
    Abstract: A wireless device includes at least one antenna, an RF interface, and processing circuitry coupled to the RF interface and indirectly to the at least one antenna. The wireless device identifies other wireless devices that service based upon transmission characteristics of wireless signals received from other wireless devices and/or relative positions of the other wireless devices with respect to itself. In a first operational period, the wireless device determines transmission characteristics of the other wireless devices. Then, during a second operational period, without further interaction with the other wireless devices, the wireless device determines communication link characteristics based simply upon transmission characteristics of the other wireless devices.
    Type: Application
    Filed: April 27, 2007
    Publication date: October 30, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Mark Gonikberg, Marcellus Forbes
  • Publication number: 20080267100
    Abstract: A wireless device includes a case, user interface, an antenna, first processing resources, and second processing resources. The first processing resources couple to the antenna and to the second processing resources and receive and operate upon a data signal transmitted by a transmitting wireless device. In its processing operations, the first processing resources produces decoded data blocks and writes the decoded data blocks to a data buffer. When a processing resource threshold is met with regard to the plurality of decoded data blocks, the first processing resources issue a service processing interrupt to the second processing resources. In response to the service processing interrupt, the second processing resources retrieve the plurality of decoded data blocks from the data buffer in response to the service processing interrupt and process the plurality of decoded data blocks.
    Type: Application
    Filed: April 27, 2007
    Publication date: October 30, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Nelson R. Sollenberger, Srirang Ashok Lovlekar, Hui Luo, Hendrik Frederick Bruyns, Khoi Ly, Xiaoxin Qiu
  • Publication number: 20080259846
    Abstract: A circuit includes a first wireless interface circuit that transceives packetized data with a first external device in accordance with a first wireless communication protocol. A second wireless interface circuit transceives packetized data with a second external device in accordance with a second wireless communication protocol and wherein the operation of the second wireless interface circuit interferes with the operation of the first wireless interface circuit. A processing module selectively preempts use of the second frequency spectrum by the second external device using a plurality of preemption modes including a first preemption mode and a second preemption mode.
    Type: Application
    Filed: May 10, 2007
    Publication date: October 23, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Mark Gonikberg, Prasanna Desai
  • Publication number: 20080262643
    Abstract: A defect detector a hard disk drive includes a signal energy processor that produces at least one energy signal from a plurality of read samples. A comparator module compares the at least one energy signal to at least one corresponding energy threshold and generates defect data when the at least one energy signal compares unfavorably to the at least one corresponding energy threshold.
    Type: Application
    Filed: April 17, 2007
    Publication date: October 23, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: John L. Creigh, Bahjat Zafer, Hooman T. Parizi
  • Publication number: 20080242240
    Abstract: A wireless communication device includes an integrated circuit (IC) and an antenna system. The IC includes a baseband processing module, a network processing module, a calibration processing module, a receiver section and a transmitter section. The network processing module establishes a wireless communication protocol and operational parameters based on the wireless communication protocol. The calibration processing module generates RF receiver calibration information based on the operational parameters and RF receive feedback and generates RF transmitter calibration information based on the operational parameters and RF transmit feedback. The receiver section provides the RF receive feedback and converts an inbound RF signal into an inbound symbol stream. The transmitter section provides the RF transmit feedback and converts an outbound symbol stream into an outbound RF signal.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 2, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Ahmadreza Reza Rofougaran, Maryam Rofougaran
  • Publication number: 20080238770
    Abstract: An integrated circuit, for use in a GPS device, includes an on-chip gyrating circuit that generates a motion parameter based on motion of the IC. A global positioning system (GPS) receiver receives a GPS signal and generates GPS position data based on the GPS signal. A processing module processes the motion parameter to produce motion data and that generates position information based on the GPS position data and the motion data.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 2, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Publication number: 20080242346
    Abstract: A wireless communication device includes an integrated circuit (IC) and an antenna system. The IC includes a processing module and a transceiver section. The processing module establishes a wireless communication protocol, converts outbound data into an outbound symbol stream, converts an inbound symbol stream into inbound data, and establishes operational parameters. The transceiver section converts an inbound RF signal into the inbound symbol stream and converts the outbound symbol stream into an outbound RF signal. The antenna system provides a plurality of antenna structures corresponding to the plurality of operational modes of the wireless communication device, wherein the antenna system provides one of the plurality of antenna structures in accordance with the operational parameters to transceive the inbound and outbound RF signals.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 2, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Maryam Rofougaran
  • Publication number: 20080242354
    Abstract: A device includes an on-chip gyrating circuit that generates a motion parameter based on motion of the device. An RF transceiver generates an outbound RF signal from an outbound symbol stream, transmits the outbound RF signal to a remote station of a wireless network, and generates an inbound symbol stream from an inbound RF signal received from the at least one remote station. A processing module is coupled to process the motion parameter to produce motion data, to convert outbound data into the outbound symbol stream, and to convert the inbound symbol stream into inbound data, wherein the outbound data includes the motion data.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 2, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventor: Ahmadreza Reza Rofougaran
  • Publication number: 20080238629
    Abstract: A circuit includes a transceiver coupled to transmit an outbound signal in accordance with a plurality of transmit parameters to at least one remote station and receive a inbound signal from the at least one remote station. The transceiver detects a packet transmission failure, selects one of a plurality of transmission failure causes, and adjusts at least one of a plurality of transmit parameters, based on the selected one of the plurality of transmission failure causes.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 2, 2008
    Applicant: Broadcom Corporation, a California Corporation
    Inventor: Mark Gonikberg