Patents by Inventor Stephen Wu

Stephen Wu 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).

  • Non-Line-Of-Sight (NLOS) Coverage for Millimeter Wave Communication
    Publication number: 20180352444
    Abstract: A system, in an active reflector device, adjusts a first amplification gain of each of a plurality of radio frequency (RF) signals received at a receiver front-end from a first equipment via a first radio path of an NLOS radio path. A first phase shift is performed on each of the plurality of RF signals with the adjusted first amplification gain. A combination of the plurality of first phase-shifted RF signals is split at a transmitter front-end. A second phase shift on each of the split first plurality of first phase-shifted RF signals is performed. A second amplification gain of each of the plurality of second phase-shifted RF signals is adjusted.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 6, 2018
    Inventors: Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • THREE-DIMENSIONAL ANTENNA ARRAY MODULE
    Publication number: 20180351262
    Abstract: An apparatus comprising at least a plurality of antenna modules mounted on a printed circuit board (PCB) is disclosed. The PCB includes a plurality of holes embedded with a heat sink. Each antenna module comprises an antenna substrate. Each antenna module further comprises a plurality of three-dimensional (3-D) antenna cells that are mounted on a first surface of the antenna substrate. Each antenna module further comprises a plurality of packaged circuitry that are mounted on a second surface of the antenna substrate. The plurality of packaged circuitry are electrically connected with the plurality of 3-D antenna cells. Furthermore, each antenna module is mounted on the plurality of holes via a corresponding packaged circuitry of the plurality of packaged circuitry.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 6, 2018
    Inventors: Seunghwan Yoon, Zhihui Wang, Franco De Flaviis, Alfred Grau Besoli, Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Amplitude and phase calibration at a receiver chip in an antenna array
    Patent number: 10142006
    Abstract: A calibration system, in a receiver chip, receives a plurality of receive signals at a plurality of receive paths. A first receive path and a second receive path is selected for a first receive signal and a second receive signal, respectively. A first signal parameter of the second receive signal is adjusted relative to the first signal parameter of the first receive signal to maximize a first signal strength value of an added signal or minimize a second signal strength value of a subtracted signal. Based on the adjusted first signal parameter, an offset of the first signal parameter is calibrated. Further, based on a matching of the second signal parameter in the second receive path relative to the second signal parameter in the first receive path, value of the second signal parameter is calibrated.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: November 27, 2018
    Assignee: MOVANDI CORPORATION
    Inventors: Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • SRAM MARGIN RECOVERY DURING BURN-IN
    Publication number: 20180322917
    Abstract: Embodiments of the present invention provide systems and methods for re-balancing the stability of a SRAM cell. Embodiments of the present invention identify SRAM cells with negative voltage threshold margins and write a “zero” state bit with in the bi-stable flip-flop of the SRAM. Raising the voltage of the CMOS set containing the “zero” state bit and selective transistor biasing, skews the “zero” state bit towards the complementary “one” state bit. This induces an increase voltage thresholds of the identified SRAM cells.
    Type: Application
    Filed: February 22, 2018
    Publication date: November 8, 2018
    Inventors: William V. Huott, Chandrasekharan Kothandaraman, Adam J. McPadden, Uma Srinivasan, Stephen Wu
  • AMPLITUDE AND PHASE CALIBRATION AT A TRANSMITTER CHIP IN AN ANTENNA ARRAY
    Publication number: 20180323853
    Abstract: A calibration system, in a transmitter chip, selects a first transmit path for a first transmit signal and a second transmit path for a second transmit signal. The plurality of transmit paths are associated with a plurality of antenna elements. A first signal parameter of the second transmit signal is adjusted relative to the first signal parameter of the first transmit signal to maximize a first signal strength value of an added signal or minimize a second signal strength value of a subtracted signal. An offset of the first signal parameter is calibrated based on the adjusted first signal parameter in the second transmit path. A value of a second signal parameter is calibrated based on a matching of the second signal parameter in the second transmit path relative to the second signal parameter in the first transmit path.
    Type: Application
    Filed: May 4, 2017
    Publication date: November 8, 2018
    Inventors: Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • SRAM MARGIN RECOVERY DURING BURN-IN
    Publication number: 20180322915
    Abstract: Embodiments of the present invention provide systems and methods for re-balancing the stability of a SRAM cell. Embodiments of the present invention identify SRAM cells with negative voltage threshold margins and write a “zero” state bit with in the bi-stable flip-flop of the SRAM. Raising the voltage of the CMOS set containing the “zero” state bit and selective transistor biasing, skews the “zero” state bit towards the complementary “one” state bit. This induces an increase voltage thresholds of the identified SRAM cells.
    Type: Application
    Filed: May 8, 2017
    Publication date: November 8, 2018
    Inventors: William V. Huott, Chandrasekharan Kothandaraman, Adam J. McPadden, Uma Srinivasan, Stephen Wu
  • SRAM MARGIN RECOVERY DURING BURN-IN
    Publication number: 20180322916
    Abstract: Embodiments of the present invention provide systems and methods for re-balancing the stability of a SRAM cell. Embodiments of the present invention identify SRAM cells with negative voltage threshold margins and write a “zero” state bit with in the bi-stable flip-flop of the SRAM. Raising the voltage of the CMOS set containing the “zero” state bit and selective transistor biasing, skews the “zero” state bit towards the complementary “one” state bit. This induces an increase voltage thresholds of the identified SRAM cells.
    Type: Application
    Filed: November 30, 2017
    Publication date: November 8, 2018
    Inventors: William V. Huott, Chandrasekharan Kothandaraman, Adam J. McPadden, Uma Srinivasan, Stephen Wu
  • Amplitude and Phase Calibration at a Receiver Chip in an Antenna Array
    Publication number: 20180323857
    Abstract: A calibration system, in a receiver chip, receives a plurality of receive signals at a plurality of receive paths. A first receive path and a second receive path is selected for a first receive signal and a second receive signal, respectively. A first signal parameter of the second receive signal is adjusted relative to the first signal parameter of the first receive signal to maximize a first signal strength value of an added signal or minimize a second signal strength value of a subtracted signal. Based on the adjusted first signal parameter, an offset of the first signal parameter is calibrated. Further, based on a matching of the second signal parameter in the second receive path relative to the second signal parameter in the first receive path, value of the second signal parameter is calibrated.
    Type: Application
    Filed: December 19, 2017
    Publication date: November 8, 2018
    Inventors: Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • TECHNIQUES FOR ASYNCHRONOUS SNAPSHOT INVALIDATION
    Publication number: 20180300322
    Abstract: Asynchronous snapshot invalidation techniques are described. According to various such techniques, an enhanced file handle structure may be defined that includes a snapshot generation ID that is to comprise a value that singularly identifies a snapshot performed at a particular point in time. In some embodiments, when a snapshot ID assigned to that snapshot is reused at a subsequent point in time, a different snapshot generation ID may be assigned to that subsequent snapshot. With respect to an in-core cache, the differing snapshot generation IDs may eliminate unacceptable ambiguity regarding respective file information sets corresponding to the initial and subsequent snapshots sharing the same snapshot ID. As a result, obsolete file information sets may be cleared from the in-core cache asynchronously, enabling improved performance. The embodiments are not limited in this context.
    Type: Application
    Filed: June 22, 2018
    Publication date: October 18, 2018
    Inventors: Mardiros Z. Chakalian, Amber Palekar, Szu-Wen Kuo, Stephen Wu
  • Low-loss isolating outphasing power combiner in a radio frequency device
    Patent number: 9935663
    Abstract: The power combiner circuit includes a transformer having a first primary coil coupled to a first power amplifier (PA), a second primary coil coupled to a second PA, and a secondary coil. The secondary coil supplies a current to an antenna based on a first direction of a first phase of a first amplified constant-envelope signal in the first primary coil with respect to a second phase of a second amplified constant-envelope signal in the second primary coil. A first load impedance is associated with the first PA and a second load impedance is associated with the second PA. The first load impedance and the second load impedance receive currents from the first PA and second PA, respectively, based on a second direction of the first phase of the first amplified constant-envelope signal with respect to the second phase of the second amplified constant-envelope signal.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: April 3, 2018
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Sam Gharavi, Farid Shirinfar, Kartik Sridharan, Michael Boers, Seunghwan Yoon, Donghyup Shin, Stephen Wu, Maryam Rofougaran
  • Amplitude and phase calibration at a receiver chip in an antenna array
    Patent number: 9887760
    Abstract: A calibration system, in a receiver chip, receives a plurality of receive signals at a plurality of receive paths. A first receive path and a second receive path is selected for a first receive signal and a second receive signal, respectively. A first signal parameter of the second receive signal is adjusted relative to the first signal parameter of the first receive signal to maximize a first signal strength value of an added signal or minimize a second signal strength value of a subtracted signal. Based on the adjusted first signal parameter, an offset of the first signal parameter is calibrated. Further, based on a matching of the second signal parameter in the second receive path relative to the second signal parameter in the first receive path, value of the second signal parameter is calibrated.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: February 6, 2018
    Assignee: MOVANDI CORPORATION
    Inventors: Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • DATASET IMAGE CREATION
    Publication number: 20180032407
    Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.
    Type: Application
    Filed: October 9, 2017
    Publication date: February 1, 2018
    Inventors: Stephen Wu, Prathamesh Deshpande, Manan Patel
  • SYSTEM AND METHOD FOR MANAGING AND PRODUCING A DATASET IMAGE ACROSS MULTIPLE STORAGE SYSTEMS
    Publication number: 20180024891
    Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.
    Type: Application
    Filed: October 2, 2017
    Publication date: January 25, 2018
    Inventors: Stephen Wu, Prathamesh Deshpande, Manan Patel
  • Detecting success or failure to create storage object images
    Patent number: 9785512
    Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: October 10, 2017
    Assignee: NetApp, Inc.
    Inventors: Stephen Wu, Prathamesh Deshpande, Manan Patel
  • Dataset image creation and failure cleanup
    Patent number: 9778995
    Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: October 3, 2017
    Assignee: NetApp, Inc.
    Inventors: Stephen Wu, Prathamesh Deshpande, Manan Patel
  • GENERATING A DISCOVERY PAGE DEPICTING ITEM ASPECTS
    Publication number: 20160314205
    Abstract: In various example embodiments, a system and method for generating a discovery page that depicts item aspects are presented. A query that includes an identifier of an item is received from a client device. A category of items that includes the item described in the query is identified using the identifier of the item. One or more aspects that correspond to a group of items included in the category of items are determined. Item listings for the group of items from the category of items are accessed. A discovery page that depicts the accessed item listings of the group of items in relation to the one or more aspects is generated. Display of the generated discovery page is caused.
    Type: Application
    Filed: April 24, 2015
    Publication date: October 27, 2016
    Inventors: Harrison Maxwell Davis, Tao Peng, Stephen Neola, Stephen Wu, Hyo Chung
  • TECHNIQUES FOR ASYNCHRONOUS SNAPSHOT INVALIDATION
    Publication number: 20160217175
    Abstract: Asynchronous snapshot invalidation techniques are described. According to various such techniques, an enhanced file handle structure may be defined that includes a snapshot generation ID that is to comprise a value that singularly identifies a snapshot performed at a particular point in time. In some embodiments, when a snapshot ID assigned to that snapshot is reused at a subsequent point in time, a different snapshot generation ID may be assigned to that subsequent snapshot. With respect to an in-core cache, the differing snapshot generation IDs may eliminate unacceptable ambiguity regarding respective file information sets corresponding to the initial and subsequent snapshots sharing the same snapshot ID. As a result, obsolete file information sets may be cleared from the in-core cache asynchronously, enabling improved performance. The embodiments are not limited in this context.
    Type: Application
    Filed: August 31, 2015
    Publication date: July 28, 2016
    Applicant: NETAPP, INC.
    Inventors: Amber Palekar, Mardiros Z. Chakalian, Szu-Wen Kuo, Stephen Wu
  • SYSTEM AND METHOD FOR MANAGING AND PRODUCING A DATASET IMAGE ACROSS MULTIPLE STORAGE SYSTEMS
    Publication number: 20160026538
    Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.
    Type: Application
    Filed: October 5, 2015
    Publication date: January 28, 2016
    Inventors: Stephen Wu, Prathamesh Deshpande, Manan Patel
  • SYSTEM AND METHOD FOR DETECTING FAILURE OF STORAGE OBJECT IMAGES ON A STORAGE SYSTEM AND INITIATING A CLEANUP PROCEDURE
    Publication number: 20160026539
    Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.
    Type: Application
    Filed: October 5, 2015
    Publication date: January 28, 2016
    Inventors: Stephen Wu, Prathamesh Deshpande, Manan Patel
  • System and method for detecting failure of storage object images on a storage system and initiating a cleanup procedure
    Patent number: 9152327
    Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: October 6, 2015
    Assignee: NetApp, Inc.
    Inventors: Stephen Wu, Prathamesh Deshpande, Manan Patel