Patents by Inventor Andrew Chiu

Andrew Chiu 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).

  • Patent number: 11944611
    Abstract: The present disclosure relates to compounds of Formula (Ia) and (Ib): or a pharmaceutically acceptable salt thereof, which are useful in the treatment of an HIV infection in heavily treatment-experienced patients with multidrug resistant HIV infection.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: April 2, 2024
    Assignee: Gilead Sciences, Inc.
    Inventors: Laura Elizabeth Bauer, Anna Chiu, Eric M. Gorman, Andrew Stephen Mulato, Martin Sunkwang Rhee, Charles William Rowe, Scott P. Sellers, Dimitrios Stefanidis, Winston C. Tse, Stephen R. Yant, Dana J. Levine
  • Publication number: 20240102941
    Abstract: Methods and systems for calibrating simulated measurement signals generated by a parametric measurement model are described herein. Regression on real measurement signals is performed using a parametric model. The residual fitting error between the real measurement signals and simulated measurement signals generated by the parametric model characterizes the error of the parametric model at each set of estimated values of the one or more floating parameters. Simulated measurement signals are generated by the parametric model at specified values of the floating parameters. A residual fitting error associated with the simulated measurement signals generated at the specified values of the floating parameters is derived from the residual fitting errors calculated by the regression on the real measurement signals. The simulated measurement signals are calibrated by adding the residual fitting error to the uncalibrated, simulated measurement signals.
    Type: Application
    Filed: September 11, 2023
    Publication date: March 28, 2024
    Inventors: Brian C. Lin, David Wu, Song Wu, Tianrong Zhan, Emily Chiu, Andrew Lagodzinski
  • Publication number: 20180170553
    Abstract: An innovative passive cooling solution with sealed UAV enclosure system allows heat from a semiconductor chip to be dissipated to the ambient environment through evaporation/condensation phase-change cooling and air cooling a heat sink such as a fin without any additional power consumption to operate cooling solution. One example of such a solution may include a pipe with a fin and a fluid. The pipe may include a wick structure along an inner surface of the pipe configured to allow the fluid to travel within the wick structure and to allow a vapor form of the fluid to exit the wick structure towards a center of the pipe.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 21, 2018
    Inventors: Peng WANG, Don LE, Jon ANDERSON, Chinchuan Andrew CHIU
  • Publication number: 20170061992
    Abstract: In one embodiment, a system includes a wafer and a plurality of contact pads positioned on the wafer. Each contact pad includes a multi-layer stud and a cap layer. The multi-layer stud includes at least a bottom layer and a top layer, the bottom layer being positioned on and extending from an upper surface of the wafer substantially in a direction perpendicular to the upper surface of the wafer, and the top layer being positioned above the bottom layer and substantially extending in the direction perpendicular to the upper surface of the wafer. The cap layer is positioned on the top layer of the multi-layer stud and extends beyond sidewalls of the multi-layer stud substantially in a direction parallel to the upper surface of the wafer. The bottom layer has a larger cross-sectional area than any layer of the multi-layer stud positioned thereabove.
    Type: Application
    Filed: August 31, 2015
    Publication date: March 2, 2017
    Inventors: Andrew Chiu, Matthew W. Last, Edward H. P. Lee, Michael M. H. Yang
  • Patent number: 9047894
    Abstract: A magnetic write head having a write pole with a tapered trailing edge portion and having a spin torque oscillator that is formed entirely on the tapered trailing edge portion and that is self aligned with first and second sides of the write pole. The write pole and spin torque oscillator are formed by a method wherein the sides of the spin torque oscillator and write pole are defined in the same photolithographic and ion milling process, thereby allowing for the self alignment of the spin torque oscillator with the sides of the write pole.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: June 2, 2015
    Assignee: HGST Netherlands B.V.
    Inventors: Andrew Chiu, Edward H. P. Lee
  • Publication number: 20150098150
    Abstract: A magnetic write head having a write pole with a tapered trailing edge portion and having a spin torque oscillator that is formed entirely on the tapered trailing edge portion and that is self aligned with first and second sides of the write pole. The write pole and spin torque oscillator are formed by a method wherein the sides of the spin torque oscillator and write pole are defined in the same photolithographic and ion milling process, thereby allowing for the self alignment of the spin torque oscillator with the sides of the write pole.
    Type: Application
    Filed: October 3, 2013
    Publication date: April 9, 2015
    Applicant: HGST Netherlands B.V.
    Inventors: Andrew Chiu, Edward H. P. Lee
  • Patent number: 8855412
    Abstract: Embodiments include a method of image processing including decomposing a reflectance spectrum for a test surface into a linear combination of reflectance spectra of a set of test targets. The coefficient vector calculated in this decomposition is used to predict a response of an imaging sensor to the test surface. A plurality of such predicted responses may be used for various applications involving color detection and/or classification, including human skin tone detection.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: October 7, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Shuxue Quan, Chinchuan Andrew Chiu, Xiaoyun Jiang
  • Patent number: 8854764
    Abstract: Techniques of the present invention include detecting a touchdown between a read/write head of a disk drive and a surface of a magnetic disk using multiple touchdown sensors located at an air-bearing surface (ABS). The multiple sensors increase the likelihood that a touchdown event—i.e., a portion of the ABS of the head contacting the underlying magnetic disk surface—will be detected. During touchdown, the portion of the head contacting the magnetic disk generates frictional heat which changes a characteristic (e.g., the electrical resistance) of at least one of the sensors located at the ABS. When the sensors are connected to a detection circuit, the changing characteristic may be monitored to identify a touchdown event. The touchdown sensors may be, for example, electrically connected in either series or parallel to the detection circuit. Thus, as long as the electrical resistance of one of the sensors is changed, a touchdown event may be detected.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: October 7, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Andrew Chiu, Sujit Kirpekar, Katalin Pentek, Oscar J. Ruiz, David J. Seagle
  • Patent number: 8824827
    Abstract: Systems, methods and apparatus for image processing by classifying pixels are described. In some systems, an exposure control operation is performed according to the pixel classifications. In some cases, the pixels are classified according to a predetermined segmentation of a color space, based on predicted sensor responses.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: September 2, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Shuxue Quan, Chinchuan Andrew Chiu, Xiaoyun Jiang
  • Patent number: 8596541
    Abstract: This disclosure describes barcode scanning techniques for an image capture device. The image capture device may automatically detect a barcode within an image while the image capture device is operating in a non-barcode image capture mode, such a default image capture mode. In one aspect, the detection of the barcode within the image may be based on a combination of identified edges and low intensity regions within the image. The image capture device may configure, based on the detection of the barcode, one or more image capture properties associated with the image capture device to improve a quality at which the images are captured. The image capture device captures the image in accordance with the configured image capture properties. The techniques may effectively provide a universal and integrated front-end for producing improved quality images of barcodes without requiring significant interaction with a user via a complicated user interface.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: December 3, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Chinchuan Andrew Chiu, Jingqiang Li, Hau Hwang, Hsiang-Tsun Li, Stephen Horton, Xiaoyun Jiang, Joseph Cheung
  • Patent number: 8600189
    Abstract: To combine two or more images, an image capture device may compute motion vectors for a plurality of blocks of pixels of one of the images. The image capture device may also interpolate or extrapolate motion vectors for individual pixels or sub-blocks of pixels using the block motion vectors. The image capture device may then average the first and second images by averaging each of the pixels of the first image with pixels of the second image that correspond to a location indicated by the plurality of motion vectors. These techniques may reduce blur in image information resulting from certain movements during image capture or the use of certain image capture technologies.
    Type: Grant
    Filed: November 12, 2007
    Date of Patent: December 3, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Kalin Atanssov, Chinchuan Andrew Chiu, Hau Hwang, Hsiang-Tsun Li
  • Patent number: 8577216
    Abstract: The disclosure relates to techniques for calibration of an auto-focus process in an image capture device. The techniques may involve calibration of a lens actuator used to move a lens within a search range during an auto-focus process. For example, an image capture device may adjust reference positions for the search range based on lens positions selected for different focus conditions. The different focus conditions may include a far focus condition and a near focus condition. The focus conditions may be determined based on a detected environment in which the device is used. Detection of an indoor environment may indicate a likelihood of near object focus, while detection of an outdoor environment may indicate a likelihood of far object focus. An image capture device may detect indoor and outdoor environments based on lighting, exposure, or other conditions.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: November 5, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Jingqiang Li, Szepo Robert Hung, Chinchuan Andrew Chiu
  • Patent number: 8547660
    Abstract: A magnetic write head having a tapered trailing edge and having a magnetic layer formed over a trailing edge of the write pole at a location recessed from the ABS, the magnetic layer being separated from the trailing edge of the write pole by a thin non-magnetic layer. The thin non-magnetic layer is preferably sufficiently thin that the magnetic layer can function as a portion of the write pole in a region removed from the ABS. A trailing magnetic shield is formed over the write pole and is separated from the write pole by a non-magnetic trailing gap layer. A non-magnetic spacer layer can be formed over the magnetic layer to provide additional separation between the magnetic layer and the trailing magnetic shield.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: October 1, 2013
    Assignee: HGST Netherlands B.V.
    Inventors: Donald G. Allen, Amanda Baer, Yingjian Chen, Andrew Chiu, Liubo Hong, Wen-Chien D. Hsiao, Edward H. P. Lee, Fenglin Liu, Aron Pentek, Katalin Pentek, Kyusik Shin, Yi Zheng, Qiping Zhong, Honglin Zhu
  • Patent number: 8498332
    Abstract: Apparatus are provided including an image signal carrier, a luminance information evaluator, and a chrominance information modifier. The image signal carrier is encoded with an image signal including luminance information and chrominance information. The luminance information evaluator evaluates the luminance information in the image signal for a given region within the image to identify when the given region is one of substantially white and substantially dark. The chrominance information modifier is provided to modify the chrominance information corresponding to the given region when the given region is one of substantially white and substantially dark.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: July 30, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoyun Jiang, Shuxue Quan, Chinchuan Andrew Chiu, Szepo Robert Hung, Ruben M. Velarde, Ying Xie Noyes
  • Patent number: 8442344
    Abstract: The disclosure describes adaptive filtering techniques to improve the quality of captured image information, such as video or still images. An image sensor captures image information and determines a plurality of parameter values based on a current exposure index and a current scaling factor of the image information. The adaptive spatial image filter includes both horizontal and vertical sharpening filters and configures, i.e., adapts, the horizontal sharpening filter and the vertical sharpening filter based on the plurality of parameter values determined by the image sensor. The adaptive spatial image filter applies the horizontal and vertical sharpening filters to at one channel of the image information to generate filtered image information.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: May 14, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoyun Jiang, Chinchuan Andrew Chiu, Dennis Liu, Victor H. Chan, Xin Zhong
  • Publication number: 20130083430
    Abstract: Techniques of the present invention include detecting a touchdown between a read/write head of a disk drive and a surface of a magnetic disk using multiple touchdown sensors located at an air-bearing surface (ABS). The multiple sensors increase the likelihood that a touchdown event—i.e., a portion of the ABS of the head contacting the underlying magnetic disk surface—will be detected. During touchdown, the portion of the head contacting the magnetic disk generates frictional heat which changes a characteristic (e.g., the electrical resistance) of at least one of the sensors located at the ABS. When the sensors are connected to a detection circuit, the changing characteristic may be monitored to identify a touchdown event. The touchdown sensors may be, for example, electrically connected in either series or parallel to the detection circuit. Thus, as long as the electrical resistance of one of the sensors is changed, a touchdown event may be detected.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Inventors: Andrew Chiu, Sujit Kirpekar, Katalin Pentek, Oscar J. Ruiz, David J. Seagle
  • Patent number: 8306336
    Abstract: In accordance with one embodiment of the disclosure, apparatus are provided, including an image processor, a unique image processing mechanism, and a unique image processing activation mechanism. The image processor includes the unique image processing mechanism, which processes a certain type of image. The unique image processing activation mechanism causes the unique image processing mechanism to process a given image.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: November 6, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoyun Jiang, Chinchuan Andrew Chiu, Shuxue Quan
  • Publication number: 20120176507
    Abstract: Embodiments include a method of image processing including decomposing a reflectance spectrum for a test surface into a linear combination of reflectance spectra of a set of test targets. The coefficient vector calculated in this decomposition is used to predict a response of an imaging sensor to the test surface. A plurality of such predicted responses may be used for various applications involving color detection and/or classification, including human skin tone detection.
    Type: Application
    Filed: March 20, 2012
    Publication date: July 12, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Shuxue Quan, Chinchuan Andrew Chiu, Xiaoyun Jiang
  • Patent number: 8208758
    Abstract: The disclosure is directed to techniques for region-of-interest (ROI) video processing based on low-complexity automatic ROI detection within video frames of video sequences. The low-complexity automatic ROI detection may be based on characteristics of video sensors within video communication devices. In other cases, the low-complexity automatic ROI detection may be based on motion information for a video frame and a different video frame of the video sequence. The disclosed techniques include a video processing technique capable of tuning and enhancing video sensor calibration, camera processing, ROI detection, and ROI video processing within a video communication device based on characteristics of a specific video sensor. The disclosed techniques also include a sensor-based ROI detection technique that uses video sensor statistics and camera processing side-information to improve ROI detection accuracy.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: June 26, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Haohong Wang, Shuxue Quan, Khaled Helmi El-Maleh, Chinchuan Andrew Chiu, Xiaoyun Jiang
  • Patent number: 8201320
    Abstract: A method for manufacturing a magnetic write head having a leading magnetic shield and a trailing magnetic shield that are arranged to prevent the lost of magnetic write field to the trailing magnetic shield. The write head includes a non-magnetic step layer that provides additional spacing between the trailing magnetic shield and the write pole at a region removed from the air bearing surface.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: June 19, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Donald G. Allen, Yingjian Chen, Andrew Chiu, Liubo Hong, Wen-Chien D. Hsiao, Edward H. P. Lee, Fenglin Liu, Katalin Pentek, Kyusik Shin, Yi Zheng, Qiping Zhong, Honglin Zhu