Patents Assigned to Broadcom
  • Patent number: 7961255
    Abstract: A television on a chip (TVOC) system that provides a cost effective approach for providing television functionality on a single integrated circuit chip is disclosed. A TVOC includes the functionality necessary to receive and display television signals in a variety of input and output formats. A TVOC can be used in set-top boxes for cable and satellite television, or directly within a television. All functionality provided can be provided on a single integrated circuit. TVOC includes a data transport module, an IF demodulator, a digital audio engine, an analog audio engine, a digital video engine, and an analog video engine. The TVOC also includes three sets of interfaces including output interfaces, control interfaces and ancillary interfaces. Further features and embodiments provide enhanced functionality and increased efficiencies.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: June 14, 2011
    Assignee: Broadcom Corporation
    Inventors: David A. Baer, Jeff Tingley, Aleksandr Movshovich, Brad Grossman, Brian F. Schoner, Chengfuh Jeffrey Tang, Chuck Monahan, Darren D. Neuman, David Chao Hua Wu, Francis Cheung, Greg A. Kranawetter, Hoang Nhu, Hsien-Chih Jim Tseng, Iue-Shuenn Chen, James D. Sweet, Jeffrey S. Bauch, Keith LaRell Klinger, Patrick Law, Rajesh Mamidwar, Dan Simon, Sang Van Tran, Shawn V. Johnson, Steven T. Jaffe, Thu T. Nguyen, Ut Nguyen, Yao-Hua Steven Tseng, Brad Delanghe, Ben Giese, Jason Demas, Lakshman Ramakrishnan, Sandeep Bhatia, Guang-Ting Shih, Tracy C. Denk
  • Patent number: 7961812
    Abstract: A polar transmitter includes a digital processor coupled to receive a complex modulated digital signal and a feedback signal produced from the complex modulated digital signal and that is operable to compare the complex modulated digital signal to the feedback signal to determine an error signal indicative of a difference between the complex modulated digital signal and the feedback signal. The digital processor is further operable to produce a correction signal from the error signal and to add the correction signal to the complex modulated digital signal to produce a corrected complex modulated digital signal.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: June 14, 2011
    Assignee: Broadcom Corporation
    Inventors: Henrik T. Jensen, Hooman Darabi, Alireza Zolfaghari
  • Patent number: 7961823
    Abstract: Data error such as mean square error may be reduced in a system such as a communication receiver using a dithering algorithm that adjusts one or more parameters in the system. The dithering algorithm may be applied to more than one parameter in a nested manner. The dithering algorithm may be modified to immediately check the MSE after a parameter has been adjusted.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: June 14, 2011
    Assignee: Broadcom Corporation
    Inventors: Thomas Kolze, Bruce Currivan, Afshin Momtaz
  • Patent number: 7961193
    Abstract: The invention refers to a video data processing system and a video data processing circuit, comprising at least two functional blocks of which at least a first functional block is programmable so that different functions can be provided by said first functional block.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: June 14, 2011
    Assignee: Broadcom Corporation
    Inventors: Evgeny Spektor, Gili Elias
  • Patent number: 7962147
    Abstract: A method of receiving information from one or more wireless uplink channels is provided. The method includes receiving information at a media access controller (MAC) from a first set of one or more wireless uplink channels in response to bandwidth allocation map (MAP) messages sent from the MAC and receiving information at the MAC from a second set of one or more wireless uplink channels in response to MAP messages sent by another MAC.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: June 14, 2011
    Assignee: Broadcom Corporation
    Inventors: Lisa V. Denney, Gerald Grand, Yushan Lu
  • Patent number: 7961747
    Abstract: Presented herein are system(s), method(s), and apparatus for a monitor with conversion capabilities for transferring data to a portable media player. In one embodiment, there is presented a monitor for displaying video data. The monitor comprises at least one input, a screen, an encoder, a memory, and an interface. The at least one input receives decompressed video data. The screen displays the decompressed video data. The encoder encodes the decompressed video data. The memory stores the encoded decompressed video data. The interface transfers the encoded decompressed video data to another memory removable from the interface.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: June 14, 2011
    Assignee: Broadcom Corporation
    Inventor: Alexander G. Maclnnis
  • Patent number: 7961781
    Abstract: Embodiments include a system for performing dispersion compensation on an electromagnetic signal received over a communication channel, the electromagnetic signal bearing information at a symbol rate. An interleaved analog to digital converter (“ADC”) block may be used, wherein the interleaved ADC block may be configured to generate a plurality of digitally sampled signals from the electromagnetic signal. An interleaved equalizer block may be configured to digitally process each of the digitally sampled signals generated by the ADC block to generate a plurality of digitally equalized signals. A multiplexer may be configured to aggregate the digitally equalized signals into a composite output signal.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: June 14, 2011
    Assignee: Broadcom Corporation
    Inventors: Vivek Telang, Vasudevan Parthasarathy, Sudeep Bhoja, Hong Chen, Afshin Momtaz, Chung-Jue Chen, Ali Ghiasi, Michael Furlong, Lorenzo Longo
  • Publication number: 20110135044
    Abstract: A filter settings generation operation includes sampling a communication channel to produce a sampled signal. The sampled signal is spectrally characterized across a frequency band of interest to produce a spectral characterization of the sampled signal. This spectral characterization may not include a signal of interest. The spectral characterization is then modified to produce a modified spectral characterization. Filter settings are then generated based upon the modified spectral characterization. Finally, the communication channel is filtered using the filter settings when the signal of interest is present on the communication channel. In modifying the spectral characterization, pluralities of spectral characteristics of the spectral characterization are independently modified to produce the modified spectral characterization. Modifications to the spectral characterization may be performed in the frequency domain and/or the time domain.
    Type: Application
    Filed: February 14, 2011
    Publication date: June 9, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: Thomas J. Kolze, Bruce J. Currivan, Jonathan S. Min, Eric Ojard, James Chi Thi, Daniel Howard
  • Publication number: 20110135025
    Abstract: A system and method for communicating with a second communication system utilizing a plurality of antennas. Various aspects of the present invention may comprise determining whether communicating with the second communication system utilizing a plurality of antennas in a first configuration, which comprises a beam-forming configuration, is preferable to utilizing a plurality of antennas in a second configuration, which comprises a MIMO or MISO configuration. If it is determined that the first configuration is preferable to the second configuration, the communication system may be configured to communicate with the second communication system by utilizing at least a portion of the plurality of antennas in the first configuration. If it is determined that the second configuration is preferable to the first configuration, then the communication system may be configured to communicate with the second communication system by utilizing at least a portion of the plurality of antennas in the second configuration.
    Type: Application
    Filed: February 14, 2011
    Publication date: June 9, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: Jeyhan Karaoguz, Nambirajan Seshadri, James D. Bennett
  • Publication number: 20110133835
    Abstract: Double transformer balun for maximum PA (Power Amplifier) power. A novel approach is presented herein by which conversion from a differential signal to single-ended signal may be achieved using a double transformer balun design. The secondary coils of the double transformer balun also operate as a choke for the PA supply voltage. The secondary coils can operate as an RF (Radio Frequency) trap or choke to keep any AC (Alternating Current) signal components and to pass any DC (Direct Current) components. By using a double transformer balun design, relatively thinner tracks may be employed thereby ensuring a high degree of electromagnetic coupling efficiency and high performance. Also, these relatively thinner tracks consume a relatively small amount of space on the die. The double transformer balun design also includes a matching Z (impedance) block that is operable to match the Z of an antenna or line that the PA is driving.
    Type: Application
    Filed: February 22, 2011
    Publication date: June 9, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: Jesus Alfonso Castaneda, Qiang Li, Ahmadreza (Reza) Rofougaran
  • Publication number: 20110133895
    Abstract: A transceiver for a RFID reader and a transceiver for a RFID transponder (tag) allow communication between the two devices. The RFID reader utilizes an analog front end and a digital backend. In the receiver portion of the transceiver, the front end of the RFID reader uses a pair of down-conversion mixers to demodulate a received signal into in-phase (I) and quadrature (Q) components and analog-to-digital converters (ADC) digitize the signal. A digital signal processor (DSP) in the back end processes the digital signal and uses a matched filter for data detection. The RFID tag receives an inductively coupled signal from the reader and the receiver portion of the tag uses a pulse/level detector that employs an analog comparator and a sample and hold circuit to detect the received signal. A digital decoder/controller is used to decode the incoming data and to establish a sampling clock for the pulse/level detector.
    Type: Application
    Filed: January 28, 2011
    Publication date: June 9, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: Jiangfeng Wu, Donald Edward Major
  • Publication number: 20110138204
    Abstract: A method and apparatus for communicating information between networked devices. Various aspects of the present invention may comprise, for example, a first networked device communicating information over a wireless communication network to a second networked device having power-save mode capability. The first networked device receives an incoming message from the second networked device. A first outgoing message is transmitted to the second networked device prior to transmitting a previously queued outgoing message. A second outgoing message is transmitted to the second networked device prior to the previously queued outgoing message being transmitted. Information may be communicated to the second networked device in a particular manner that depends on whether the second networked device has power-save capability. Communication medium access may be performed in a particular manner, depending on whether the second networked device has power-save capability.
    Type: Application
    Filed: December 13, 2010
    Publication date: June 9, 2011
    Applicant: BROADCOM CORPORATION
    Inventor: Matthew J. Fischer
  • Publication number: 20110137144
    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: February 17, 2011
    Publication date: June 9, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: Ahmadreza (Reza) Rofougaran, Jeyhan Karaoguz, Pieter Vorenkamp
  • Publication number: 20110138428
    Abstract: A method and apparatus for coupling a system propagating wireless home networking communication signals to a system propagating television signals over a coaxial cable system to a device capable of receiving television signals that includes a three-port adapter having an antenna port, a first coaxial cable port and a second coaxial cable port. The antenna port is coupled to the system propagating home networking communications signals. The first coaxial cable port is coupled to the system propagating television signals over a coaxial cable. The second coaxial cable port is coupled to a device capable of receiving television signals.
    Type: Application
    Filed: February 14, 2011
    Publication date: June 9, 2011
    Applicant: BROADCOM CORPORATION
    Inventors: Stephen Palm, David Fifield
  • Publication number: 20110133967
    Abstract: In a latch circuit having a bistable pair of cross connected transistors of a first polarity and a third transistor of a second polarity, a current signal greater than a bias current is received at a latch circuit port, amplified with the third transistor, and applied to the latch circuit port. This decreases the time in which the latch circuit port receiving the current signal greater than the bias current reaches a steady state voltage.
    Type: Application
    Filed: February 14, 2011
    Publication date: June 9, 2011
    Applicant: Broadcom Corporation
    Inventors: Klaas BULT, Rudy VAN DE PLASSCHE, Jan MULDER
  • Patent number: 7957339
    Abstract: Wireless local area network (WLAN) management. A novel approach is provided to associate various wireless stations (STAs) to the WLAN via appropriately selected Access Point (APs). In one implementation, a first AP services only those STAs that have functionality of a first user class (e.g., 802.11b functionality in one instance). In addition, a second AP services only those STAs that have functionality of a second user class (e.g., 802.11g functionality). The WLAN management ensures that STAs having similar characteristics (or similar functionality) are grouped together and associated with an AP that corresponds to those characteristics. For example, 802.11b STAs associate with the WLAN via an 802.11b AP. Analogously, 802.11g STAs associate with the WLAN via an 802.11g AP. When an 802.11g STA is unable to associate with the WLAN via an 802.11g AP, the STA may shift down its functionality set to 802.11b to successfully associate with the WLAN.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: June 7, 2011
    Assignee: Broadcom Corporation
    Inventors: Jeffrey L. Thermond, Edward H. Frank
  • Patent number: 7957606
    Abstract: Presented herein are a system and method for sharpening edges in a region. In one embodiment, there is presented a method for sharpening edges. The method comprises measuring differences between at least a value associated with a first pixel and a value associated with a second pixel of a plurality of pixels; and applying a sharpening mask to the plurality of pixels, wherein the sharpening mask is a function of at least one of the measured differences, a first value associated with any one of the plurality of pixels, and a second value associated with any other of the pixels, thereby resulting in sharpened pixels.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: June 7, 2011
    Assignee: Broadcom Corporation
    Inventor: Brian Schoner
  • Patent number: 7956645
    Abstract: Low power high-speed output driver. An array of switches (some of which are inverting switches whose connectivity is governed oppositely as the control signal provided to it) is implemented such that an input signal governs the connectivity of those switches. A resistor is coupled between the nodes interposed between the switches of the array, and an output signal is taken from the nodes at ends of the resistor. The high voltage level of such an output driver is truly the level of the power supply energizing the circuit (e.g., VDD) while still consuming relatively low power.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: June 7, 2011
    Assignee: Broadcom Corporation
    Inventor: Afshin Momtaz
  • Patent number: 7958525
    Abstract: A system and method for scheduling media for consumption via a demand broadcast channel based upon notifications received during user consumption of media. An embodiment of the present invention may employ notifications generated when users select media for consumption, to calculate one or more statistics. The statistics may be calculated and used by a media provider to schedule media into a demand broadcast channel in which the frequency of repetition or time of availability of the media is set according to a ranking of the relative frequency of requests for the media. The statistics may also be shared with a third party, to enable a third party media provider to arrange the scheduling of media availability according to the relative frequency of requests for the media.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: June 7, 2011
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, James D. Bennett
  • Patent number: 7956689
    Abstract: A programmable gain amplifier (PGA) system comprises selectable parallel transconductors in a front end, independently selectable serial amplification circuits in a back end. The back end is configured to receive an output of the front end and may include a plurality of current or voltage mode amplifiers in series. The PGA system also includes control circuitry to select a gain configuration for the PGA by selecting selectable components in the front and back ends. The PGA system may additionally include control circuitry configured to change the transconductance of one or more of the front end transconductors such that the gain configurations of the PGA are independent of variations such as those due to temperature and fabrication. The PGA system may be used between a signal receiver and an analog to digital converter.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: June 7, 2011
    Assignee: Broadcom Corporation
    Inventors: Jonathan Ephraim David Hurwitz, Adrià Bofill-Petit, Robert K. Henderson