Patents Assigned to Broadcom
  • Microprocessor with integrated high speed memory
    Patent number: 7747843
    Abstract: A computer system with a processor architecture having more than one execution channel is described. The processor architecture contains at least one load/store unit for loading and storing data objects, and at least one data cache memory associated to the processor holding data objects accessed by the processor. The processor's load/store unit includes a load/store memory directly interfacing the load/store unit to the data cache.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventors: Sophie Wilson, John E. Redford
  • Fast flexible filter processor based architecture for a network device
    Patent number: 7746854
    Abstract: A method of filtering data packets in a network device is disclosed. An incoming packet is received from a port and the incoming packet is inspected and packet fields are extracted. The incoming packet is classified based on the extracted packet fields and action instructions are generated. The incoming packet is then modified based on the action instructions. Further, the inspection and extraction includes applying inspection mask windows to any portion of the incoming packet to extract programmable packet fields.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventors: Shekhar Ambe, Shiri Kadambi, Sandeep Relan
  • Graphics display system with anti-aliased text and graphics feature
    Patent number: 7746354
    Abstract: A graphics integrated circuit chip is used in a set-top box for controlling a television display. The graphics chip processes analog video input, digital video input, a graphics input and an audio input simultaneously. The system may use anti-aliased text and graphics to provide high quality display of graphical elements, or glyphs, which represent an image of a character of text or graphics, on television and other displays. The graphical elements may be superimposed over live video or arbitrary graphics imagery.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventors: Alexander G. MacInnis, Chengfuh Jeffrey Tang, Xiaodong Xie, James T. Patterson, Greg A. Kranawetter
  • Gain control in a multiple RF transceiver integrated circuit
    Patent number: 7747234
    Abstract: A radio frequency (RF) transceiver integrated circuit (IC) includes a plurality of baseband Tx sections, a plurality of RF Tx sections, a plurality of RF Rx sections, and a plurality of baseband Rx sections. The RF transceiver IC further includes a static digital interface, a dynamic digital interface, and gain control, distribution, and buffering circuitry. Static digital interfaces are operable to receive static gain control commands from a coupled baseband processor. The dynamic digital interface is also operable to receive dynamic gain control commands from the coupled baseband processor. The gain control, distribution, and buffering circuitry is operable to apply the static gain control commands and dynamic gain control commands to at least some of the plurality of baseband Tx sections, the plurality of RF Tx sections, the plurality of RF Rx sections, and the plurality of baseband Rx sections.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventor: Arya Reza Behzad
  • Range checking content addressable memory array
    Patent number: 7746679
    Abstract: A disclosed embodiment is a range checking CAM array comprising a plurality of words, where each of the plurality of words comprises a plurality of bound check cells. Each of the plurality of bound check cells outputs a corresponding plurality of match signals and a corresponding plurality of bound check signals. The corresponding plurality of match signals and corresponding plurality of bound check signals are combined to produce a range check output indicating whether data on a data input bus is within a target range. The plurality of bound check cells may be coupled to form at least one cascade of bound check cells, where each cascade of bound check cells may be terminated at a ripple logic. The CAM array produces a final range check output based on the corresponding plurality of match signals and the corresponding plurality of bound check signals.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventor: Christopher Gronlund
  • Method and system for rate adaptation
    Patent number: 7747795
    Abstract: A media access controller to adapt a rate of an output signal to a rate of an output medium is provided. The media access controller includes a register configured to output data to an external device, said register comprising a first input configured to control an output of the register and a second input configured to control an input to said register. The media access controller also includes a receiver configured to accept a signal from an external clock over the output medium and to provide said external clock signal to said first input of said register. An internal clock in the media access controller is configured to provide an internal clock signal from said internal clock to said second input of said register.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventor: David Wong
  • Method and system for iSCSI boot in which an iSCSI client loads boot code from a host bus adapter and/or network interface card
    Patent number: 7747847
    Abstract: Certain aspects of a method for iSCSI boot may include loading boot BIOS code from a host bus adapter or a network interface controller (NIC) by an iSCSI client device. A connection may be established to an iSCSI target by the iSCSI client device after loading the boot BIOS code. The boot BIOS code may be chained to at least one interrupt handler over iSCSI protocol. An operating system may be remotely booted from the iSCSI target by the iSCSI client device based on chaining the interrupt handler. An Internet protocol (IP) address and/or location of the iSCSI target may be received. At least one iSCSI connection may be initiated to the iSCSI target based on chaining at least one interrupt handler. The iSCSI target may be booted in real mode if at least one master boot record is located in the memory.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventors: Uri El Zur, Kan Frankie Fan, Murali Rajagopal, Kevin Tran
  • Disk formatter and methods for use therewith
    Patent number: 7747811
    Abstract: A disk formatter includes an address module for creating disk block address data corresponding to a disk sector of a disk drive. A sector write module initiates a physical mode write operation to the disk sector that incorporates the corresponding disk block address data.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventors: Bob R. Southerland, John Mead, Kevin W. McGinnis
  • System and method for fault tolerant TCP offload
    Patent number: 7746867
    Abstract: Systems and methods that provide fault tolerant transmission control protocol (TCP) offloading are provided. In one example, a method that provides fault tolerant TCP offloading is provided. The method may include one or more of the following steps: receiving TCP segment via a TCP offload engine (TOE); calculating a TCP sequence number; writing a receive sequence record based upon at least the calculated TCP sequence number to a TCP sequence update queue in a host; and updating a first host variable with a value from the written receive sequence record.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventor: Kan Frankie Fan
  • Sub-micron high input voltage tolerant input output (I/O) circuit
    Patent number: 7746124
    Abstract: A method of providing bias voltages for input output connections on low voltage integrated circuits. As integrated circuit voltages drop generally so does the external voltages that those circuits can handle. By placing input and output devices, in series, external voltages can be divided between the devices thereby reducing junction voltages seen by internal devices. By using external voltages as part of a biasing scheme for integrated circuit devices, stress created by the differential between external voltages and internal voltages can be minimized. Additionally device wells can be biased so that they are at a potential that is dependant on the external voltages seen by the low voltage integrated circuit.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventor: Janardhanan S. Ajit
  • Power management unit for use in portable applications
    Patent number: 7746046
    Abstract: A voltage regulator includes a first stage capable of receiving a reference voltage and capable of having a first current flowing through the first stage. A second stage is capable of having a second current flowing through the second stage. A third stage is capable of outputting an output voltage and capable of having a third current flowing through the second stage. The first, second and third currents are proportional to each other throughout a range of operation of the voltage regulator between substantially zero output current and maximum output current. The first stage drives the second stage as a low input impedance load.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventor: Chun-Ying Chen
  • Method and system for stereo echo cancellation for VoIP communication systems
    Patent number: 7747002
    Abstract: An exemplary embodiment of the present invention is directed toward a method and system for cancelling line echo in the presence of a known secondary audio signal. Filter adaption is enabled in the presence of a known secondary audio source such as the sound of a computer game, a music signal or other secondary audio sources that would otherwise prevent echo cancellation due to an apparent double talk condition. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventors: James C. H. Thi, Theodore F. Rabenko
  • Asymmetrical MIMO wireless communications
    Patent number: 7746886
    Abstract: A method for asymmetrical MIMO wireless communication begins by determining a number of transmission antennas for the asymmetrical MIMO wireless communication. The method continues by determining a number of reception antennas for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas exceeds the number of reception antennas, using spatial time block coding for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas does not exceed the number of reception antennas, using spatial multiplexing for the asymmetrical MIMO wireless communication.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Jason A. Trachewsky, Nambirajan Seshadri, Kelly Brian Cameron, Hau Thien Tran, Ba-Zhong Shen
  • RF reception system and integrated circuit with programmable impedance matching network and methods for use therewith
    Patent number: 7746291
    Abstract: An integrated circuit includes an on-chip antenna interface, coupled to an off-chip antenna interface having at least one off-chip impedance matching component, that forms a programmable impedance matching network with the at least one off-chip impedance matching component. The programmable impedance matching network is programmable based on a control signal. An RF receiver, coupled to the programmable impedance matching network, that generates inbound data in response to a received signal from the programmable impedance matching network.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Method and system for bandwidth calibration for a phase locked loop (PLL)
    Patent number: 7746956
    Abstract: Aspects of a method and system for bandwidth calibration for a phase locked loop are presented. Aspects of the method may include generating one or more carrier signals based on one or more corresponding calibration signals. A pre-distortion function may be computed based on the generated one or more carrier signals for the phase locked loop circuit. An output radio frequency (RF) synthesized signal generated by the phase locked loop circuit may be modified based on the computed pre-distortion function and a subsequent output RF synthesized signal generated based on the modified output RF synthesized signal.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventor: Sofoklis Plevridis
  • Method and system for improving the appearance of deinterlaced chroma formatted video
    Patent number: 7746408
    Abstract: Herein described is a system and method for improving the appearance of video by generating an improved 4:2:2 chroma. The system comprises a 4:2:2 to 4:2:0 chroma regenerator that regenerates 4:2:0 chroma given a received 4:2:2 chroma, and a 4:2:0 to 4:2:2 chroma generator that weaves and interpolates the regenerated 4:2:0 chroma to yield an adjusted 4:2:2 chroma. The system further comprises a blending system used for blending the adjusted 4:2:2 chroma with the received 4:2:2 chroma based on a control input provided by a motion indication signal. The method comprises regenerating a 4:2:0 chroma from a received 4:2:2 chroma using an algorithm. The method further comprises generating an adjusted 4:2:2 chroma using the regenerated 4:2:0 chroma using another algorithm. The method further comprises blending the adjusted 4:2:2 chroma with the received 4:2:2 chroma to generate an improved 4:2:2 chroma.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventors: Richard Hayden Wyman, Darren D. Neuman, Brian F. Schoner
  • Time multiplexing logic in physical design domain for multiple instantiation
    Patent number: 7746785
    Abstract: An apparatus and method are provided to perform a time multiplexing logic in a module, are provided including identifying a driving flop and a receiving flop in the module, receiving a modified input signal, and identifying a worst case timing path for the modified input signal to transmit from the driving flop to the receiving flop. The time multiplexing logic of the apparatus and method further identifies a predetermined point of the worst case timing path, and inserts a logic unit at the predetermined point allowing the time multiplexing logic circuit to process and output the modified input signal at a maximum frequency.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: June 29, 2010
    Assignee: Broadcom Corporation
    Inventor: Peter Michels
  • SYSTEMS AND METHODS FOR PHYSICAL LAYER ("PHY") CONCATENATION IN A MOCA NETWORK
    Publication number: 20100158021
    Abstract: Systems and methods for concatenating messages in MoCA devices that are connected via a coax network are provided. One embodiment of a system according to the invention includes a home network having a plurality of nodes. The network is implemented over coaxial cable. The network includes a plurality of networked nodes. A transmitter of at least one of the networked nodes is configurable to transmit a concatenated burst. The concatenated burst includes a preamble, a first payload frame and a second payload frame. The first payload frame and the second payload frame are separated by a cyclic prefix of a first symbol of the second payload frame.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 24, 2010
    Applicant: BROADCOM CORPORATION
    Inventors: Avraham Kliger, Philippe Klein, Yitshak Ohana
  • ESD Protection Diode in RF pads
    Publication number: 20100155911
    Abstract: A diode is provided. The diode includes first and second diffusion layers formed in a substrate, a first metal coupled to the first diffusion layer, and a second metal coupled to the second diffusion layer that has width that is smaller than a width of the second diffusion layer.
    Type: Application
    Filed: April 28, 2009
    Publication date: June 24, 2010
    Applicant: Broadcom Corporation
    Inventor: Ramachandran Venkatasubramanian
  • Remote control device transaction setup in a home network
    Publication number: 20100162328
    Abstract: A technique of using a remote control device to identify a source for transferring content on a home network, a renderer for rendering the content and a pathway within a home network to couple the source to the renderer to transfer the content. The remote control device then transmits control information to the source to set a control parameter value within the source to send the content and transmits control information to the renderer to set a control parameter value within the renderer to receive the content. The commands from the remote configure parameter values associated with a media layer in the source and/or the renderer to initiate a hand-shake to effect the content transfer, so that the source and the renderer need not initiate the hand-shake between themselves.
    Type: Application
    Filed: December 24, 2008
    Publication date: June 24, 2010
    Applicant: BROADCOM CORPORATION
    Inventors: Jeyhan Karaoguz, Stephen Ray Palm, Xuemin Chen