Patents by Inventor David C. Garrett

David C. Garrett has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250072861
    Abstract: Imaging methods and apparatus for localizing biopsy needles coupled to an ultrasonic transmitter and/or monitoring ablation of an ablation probe connected to a microwave source, which include an arbitrary waveform generator for generating a chirp signal that excites the ultrasonic transmitter to generate an ultrasonic signal or modulates the microwave signal.
    Type: Application
    Filed: September 5, 2024
    Publication date: March 6, 2025
    Inventors: David C. Garrett, Jinhua Xu, Geng Ku, Lihong Wang
  • Publication number: 20230404407
    Abstract: Certain aspects pertain to systems, apparatus, and methods for one or both of thermoacoustic and ultrasound tomography.
    Type: Application
    Filed: June 16, 2023
    Publication date: December 21, 2023
    Inventors: David C. Garrett, Jinhua Xu, Geng Ku, Lihong Wang
  • Patent number: 10531506
    Abstract: A device includes circuitry configured to implement one or more PHY communications protocols to simultaneously communicate with one or more stations via communication links on one or more wireless networks, communicate with additional devices via a backhaul network, and exchange collaboration data, including at least one of protocol data or collaborative beamforming data, with the additional devices via the backhaul network to maintain signal parameters of communications signals with the one or more stations.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: January 7, 2020
    Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
    Inventors: David C. Garrett, Franciscus Van Der Goes, Hooman Darabi, Ramon A. Gomez, Murat Mese
  • Patent number: 9985671
    Abstract: A device includes circuitry configured to detect one or more properties of an image signal based on outputs from one or more (analog-to-digital converter) ADC configurations of a transceiver, determine a VCO frequency corresponding to an ADC sampling frequency independently from a carrier frequency, and control the VCO frequency of at least one of a transmitter or receiver based on the one or more properties of the image signal.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: May 29, 2018
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: David C. Garrett, Franciscus Van Der Goes, Hooman Darabi, Ramon A. Gomez
  • Publication number: 20170207800
    Abstract: A device includes circuitry configured to implement one or more PHY communications protocols to simultaneously communicate with one or more stations via communication links on one or more wireless networks, communicate with additional devices via a backhaul network, and exchange collaboration data, including at least one of protocol data or collaborative beamforming data, with the additional devices via the backhaul network to maintain signal parameters of communications signals with the one or more stations.
    Type: Application
    Filed: February 12, 2016
    Publication date: July 20, 2017
    Applicant: BROADCOM CORPORATION
    Inventors: David C. GARRETT, Franciscus VAN DER GOES, Hooman DARABI, Ramon A. GOMEZ, Murat MESE
  • Publication number: 20170207803
    Abstract: A device includes circuitry configured to detect one or more properties of an image signal based on outputs from one or more (analog-to-digital converter) ADC configurations of a transceiver, determine a VCO frequency corresponding to an ADC sampling frequency independently from a carrier frequency, and control the VCO frequency of at least one of a transmitter or receiver based on the one or more properties of the image signal.
    Type: Application
    Filed: February 12, 2016
    Publication date: July 20, 2017
    Applicant: AVAGO TECHNOLOGIES GERNERAL IP (SINGAPORE) PTE. LTD.
    Inventors: David C. GARRETT, Franciscus Van Der Goes, Hooman Darabi, Ramon A. Gomez
  • Publication number: 20170207935
    Abstract: A device includes circuitry configured to determine noise shaping parameters for one or more transmit signals on one or more transmit channels based on transmission protocol and spectral mask criteria. Frequency positions are identified for the one or more transmit channels based on the noise shaping parameters, and the noise shaping parameters are applied to the one or more transmit signals.
    Type: Application
    Filed: February 12, 2016
    Publication date: July 20, 2017
    Applicant: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
    Inventors: David C. GARRETT, Franciscus Van Der Goes, Hooman Darabi, Ramon A. Gomez, Murat Mese
  • Patent number: 9712348
    Abstract: A device includes circuitry configured to determine noise shaping parameters for one or more transmit signals on one or more transmit channels based on transmission protocol and spectral mask criteria. Frequency positions are identified for the one or more transmit channels based on the noise shaping parameters, and the noise shaping parameters are applied to the one or more transmit signals.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: July 18, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: David C. Garrett, Franciscus Van Der Goes, Hooman Darabi, Ramon A. Gomez, Murat Mese
  • Patent number: 9660670
    Abstract: A device includes circuitry configured to assess a broadband spectrum environment including signal and blocker characteristics via one or more receiver paths, determine operational parameters for the device based on the signal and blocker characteristics, and align one or more radio components from one or more radios for operation based on the operational parameters of the device.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: May 23, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: David C. Garrett, Franciscus Van Der Goes, Hooman Darabi, Ramon A. Gomez
  • Patent number: 9178553
    Abstract: Systems and methods are described for enhancing the audio quality of an FM receiver. In embodiments described herein, a stop band noise signal is extracted from an L+R or L?R signal produced by an FM stereo decoder. A channel quality measure is calculated based on the stop band noise signal and is used to control whether a pop suppression technique is applied to the L+R signal. The channel quality measure and the stop band noise signal are also leveraged to perform single-channel noise suppression in the frequency domain on the L?R signal and on the L+R signal. The channel quality measure is also used to control the application of a fast fading compensation process that replaces noisy segments of the L?R and L+R signal with replacement waveforms generated via waveform extrapolation.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: November 3, 2015
    Assignee: Broadcom Corporation
    Inventors: Juin-Hwey Chen, Thomas F. Baker, Evan S. McCarthy, Jes Thyssen, Walter J. Wihardja, David C. Garrett
  • Patent number: 9130643
    Abstract: Systems and methods are described for enhancing the audio quality of an FM receiver. In embodiments described herein, quadrature L?R demodulation is applied to a composite baseband signal output by an FM demodulator to obtain an L?R noise signal. A channel quality measure is calculated based on the L?R noise signal and is used to control whether a pop suppression technique is applied to an L+R signal obtained from the composite baseband signal to detect and remove noise pulses therefrom. The channel quality measure and the L?R noise signal are also leveraged to perform single-channel noise suppression in the frequency domain on an L?R signal obtained from the composite baseband signal and on the L+R signal. The channel quality measure is also used to control the application of a fast fading compensation process that replaces noisy segments of the L?R and L+R signal with replacement waveforms generated via waveform extrapolation.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: September 8, 2015
    Assignee: Broadcom Corporation
    Inventors: Juin-Hwey Chen, Thomas F. Baker, Evan S. McCarthy, Jes Thyssen, Walter J. Wihardja, David C. Garrett
  • Publication number: 20130195164
    Abstract: Systems and methods are described for enhancing the audio quality of an FM receiver. In embodiments described herein, a stop band noise signal is extracted from an L+R or L?R signal produced by an FM stereo decoder. A channel quality measure is calculated based on the stop band noise signal and is used to control whether a pop suppression technique is applied to the L+R signal. The channel quality measure and the stop band noise signal are also leveraged to perform single-channel noise suppression in the frequency domain on the L?R signal and on the L+R signal. The channel quality measure is also used to control the application of a fast fading compensation process that replaces noisy segments of the L?R and L+R signal with replacement waveforms generated via waveform extrapolation.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 1, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Juin-Hwey Chen, Thomas F. Baker, Evan S. McCarthy, Jes Thyssen, Walter J. Wihardja, David C. Garrett
  • Publication number: 20130195163
    Abstract: Systems and methods are described for enhancing the audio quality of an FM receiver. In embodiments described herein, quadrature L?R demodulation is applied to a composite baseband signal output by an FM demodulator to obtain an L?R noise signal. A channel quality measure is calculated based on the L?R noise signal and is used to control whether a pop suppression technique is applied to an L+R signal obtained from the composite baseband signal to detect and remove noise pulses therefrom. The channel quality measure and the L?R noise signal are also leveraged to perform single-channel noise suppression in the frequency domain on an L?R signal obtained from the composite baseband signal and on the L+R signal. The channel quality measure is also used to control the application of a fast fading compensation process that replaces noisy segments of the L?R and L+R signal with replacement waveforms generated via waveform extrapolation.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 1, 2013
    Applicant: Broadcom Corporation
    Inventors: Juin-Hwey Chen, Thomas F. Baker, Evan S. McCarthy, Jes Thyssen, Walter J. Wihardja, David C. Garrett
  • Patent number: 7398446
    Abstract: A first interleaved address generator is configured to generate a first interleaved address, and a second interleaved address generator is configured to generate a second interleaved address substantially concurrently with the first interleaved address generator generating the first interleaved address. A controller is configured to disable the second interleaved address generator from generating the second interleaved address if the second interleaved address is not needed to produce a continuous stream of interleaved addresses.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: July 8, 2008
    Assignee: Lucent Technologies Inc.
    Inventors: David C. Garrett, Chris J. Nicol
  • Publication number: 20040255217
    Abstract: A first interleaved address generator is configured to generate a first interleaved address, and a second interleaved address generator is configured to generate a second interleaved address substantially concurrently with the first interleaved address generator generating the first interleaved address. A controller is configured to disable the second interleaved address generator from generating the second interleaved address if the second interleaved address is not needed to produce a continuous stream of interleaved addresses.
    Type: Application
    Filed: May 29, 2003
    Publication date: December 16, 2004
    Inventors: David C. Garrett, Chris J. Nicol
  • Patent number: 6434704
    Abstract: Methods are provided for improving the efficiency of clock gating within low power clock trees. In a first aspect, a correlation level between a plurality of clock gating signals and their corresponding gates which gate a source clock is determined. The clock gating signals and their corresponding gates are combined into a single clock gating signal and a single corresponding gate if a preselected level of correlation exists therebetween. In a second aspect, an area overlap is determined for a plurality of sinks, and one of the gated drovers of the sinks is removed. The sinks of the removed gated driver then are connected to a remaining gated driver driven by a single clock gating signal and a single corresponding gate. In a third aspect, physically proximate sink clusters are rewired to generate a pure clock gating group within each sink cluster if rewiring the clusters increases wiring length by less than a predetermined amount.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: August 13, 2002
    Assignee: International Business Machines Corporation
    Inventors: Alvar Dean, David C. Garrett, Mircea Stan