Patents by Inventor Chenguang Liu

Chenguang Liu 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: 20220157273
    Abstract: A method includes determining, by a computing device, a working color space of a source content and a resulting content. The computing device models color saturation variations of different hues in the working color space with one or more properties of responses of a human vision system (HVS) to color stimulus. The computing device generates one or more color saturation variation models based on the responses of the HVS to color stimulus. An input color is mapped from the source content to an output color in the working color space using the one or more color saturation variation models.
    Type: Application
    Filed: September 30, 2021
    Publication date: May 19, 2022
    Inventors: Chang Su, Chenguang Liu, Pradeep Nagesh
  • Patent number: 11327186
    Abstract: The present invention discloses a submarine seismic monitoring apparatus and system based on the submarine Internet of things.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: May 10, 2022
    Assignees: THE FIRST INSTITUTE OF OCEANOGRAPHY, MNR, SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Yanliang Pei, Baohua Liu, Pengyao Zhi, Guangming Kan, Chenguang Liu
  • Publication number: 20220139355
    Abstract: One embodiment provides a method comprising determining a first representation of a source gamut of an input content in a first two-dimensional (2D) device-independent color space, determining a second representation of a target gamut of a display device in a second 2D device-independent color space, and determining a color transition protection zone (TPZ) based on the source gamut and the target gamut. The method further comprises utilizing a color gamut mapping (CGM) module to perform, based on the TPZ, linear color gamut compression from the first 2D device-independent color space to the second 2D device-independent color space if the target gamut is narrower than the source gamut. The method further comprises utilizing the same CGM module to perform, based on the TPZ, linear color gamut extension from the first 2D device-independent color space to the second 2D device-independent color space if the target gamut is wider than the source gamut.
    Type: Application
    Filed: August 27, 2021
    Publication date: May 5, 2022
    Inventors: Chang Su, Chenguang Liu, Pradeep Nagesh
  • Publication number: 20220114707
    Abstract: One embodiment provides a method comprising determining multi-dimensional metadata corresponding to an input image, and determining ambient light information indicative of a level of ambient light in an ambient environment of a display device. The multi-dimensional metadata comprises a cumulative distribution function (CDF) of pixels in the input image. The method further comprises determining, based on the multi-dimensional metadata and the ambient light information, one or more gains that adaptively compensate for the level of ambient light in the ambient environment. The method further comprises generating a tone mapping function based on the one or more gains, and applying the tone mapping function to the input image to generate a tone-mapped image that adaptively compensates for the level of ambient light in the ambient environment. The tone-mapped image is provided to the display device for presentation.
    Type: Application
    Filed: February 5, 2021
    Publication date: April 14, 2022
    Inventors: Dung Trung Vo, Chenguang Liu, McClain C. Nelson, William Mandel, Soojung Hyun
  • Publication number: 20220051377
    Abstract: A method, apparatus, and non-transitory computer readable medium for video tone mapping. The method includes a target display receiving a quantized video generated by a master display, the quantized video being mastered for a first range of luminance values associated with the master display; receiving metadata from a tone mapping curve parameter extraction, the metadata comprising at least one maximum value of a luminance parameter of the quantized video as mastered for the first range of luminance values; and de-quantizing the quantized video to produce a de-quantized video. The method also includes at least one processor of the target display applying a tone mapping function defined by a normalized Bezier curve to the de-quantized video; and generating, based on applying the tone mapping function, a tone mapped video mastered for a second range of luminance values associated with the target display.
    Type: Application
    Filed: October 27, 2021
    Publication date: February 17, 2022
    Inventors: Li Tao, Yeong-Taeg Kim, Chenguang Liu, Pradeep Nagesh
  • Publication number: 20220020194
    Abstract: Systems and methods described herein provide for retrieving, from a storage device, first image data previously captured by a client device. The systems and methods further detect a selection of a first image processing operation and perform the first image processing operation on the first image data to generate second image data. The systems and methods further detect a selection of a second image processing operation and perform the second image processing operation on the second image data to generate third image data. The systems and methods generate a message comprising the third image data.
    Type: Application
    Filed: September 29, 2021
    Publication date: January 20, 2022
    Inventors: Jean Luo, Oleksandr Grytsiuk, Chenguang Liu, Oleksii Gordiienko
  • Patent number: 11197631
    Abstract: A defibrillator (AED) and method for using a defibrillator using two different ECG analysis algorithms which work sequentially to improve the accuracy of AED shock decisions. A first algorithm, such as (ART), is particularly suited for analysis in the presence of CPR periods. A second algorithm, such as (PAS), is particularly suited for analysis during hands-off periods. The AED switches algorithms depending on the period and on the current analysis of the cardiac rhythm. The inventions thus provide an optimized ECG analysis scheme in a manner that improves the effectiveness of the rescue, resulting in more CPR “hands-on” time, better treatment of refibrillation, and reduced transition times between CPR and electrotherapy.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: December 14, 2021
    Assignee: Koninklijke Philips N.V.
    Inventors: Chenguang Liu, Stacy Earl Gehman, James Knox Russell, Christopher William Fleming, Dawn Blilie Jorgenson, David Roy Axness, Jeffrey Martin Boschee
  • Patent number: 11176646
    Abstract: A method, apparatus, and non-transitory computer readable medium for video tone mapping. The method includes receiving the video and determining parameters of a tone mapping function defined by a Bezier curve for processing the video. The method also includes generating, by at least one processor, a tone mapped video by applying the tone mapping function to the video using the determined parameters.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: November 16, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Li Tao, Yeong-Taeg Kim, Chenguang Liu, Pradeep Nagesh
  • Patent number: 11164353
    Abstract: Systems and methods described herein provide for retrieving, from a storage device, first image data previously captured by a client device. The systems and methods further detect a selection of a first image processing operation and perform the first image processing operation on the first image data to generate second image data. The systems and methods further detect a selection of a second image processing operation and perform the second image processing operation on the second image data to generate third image data. The systems and methods generate a message comprising the third image data.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: November 2, 2021
    Assignee: Snap Inc.
    Inventors: Jean Luo, Oleksandr Grytsiuk, Chenguang Liu, Oleksii Gordiienko
  • Patent number: 11076795
    Abstract: A defibrillator (AED) using an ECG analysis model or algorithm which can function in two different modes. The ECG analysis model is particularly suited for analysis during periods of CPR. Both modes of operation reach a shock decision in essentially the same way, where one or more ECG data segments indicate a shockable cardiac condition. In one mode of operation, the shock decision is irreversible once made. In another mode of operation, the shock decision is reversible if one or more subsequent ECG data segments indicate a no-shock decision. Improved specificity of the model is obtained without undue degradation of sensitivity to shockable ECG.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: August 3, 2021
    Assignee: Koninklijke Philips N.V.
    Inventors: Chenguang Liu, Stacy Earl Gehman
  • Publication number: 20210201545
    Abstract: Systems and methods described herein provide for retrieving, from a storage device, first image data previously captured by a client device. The systems and methods further detect a selection of a first image processing operation and perform the first image processing operation on the first image data to generate second image data. The systems and methods further detect a selection of a second image processing operation and perform the second image processing operation on the second image data to generate third image data. The systems and methods generate a message comprising the third image data.
    Type: Application
    Filed: December 31, 2019
    Publication date: July 1, 2021
    Inventors: Jean Luo, Oleksandr Grytsiuk, Chenguang Liu, Oleksii Gordiienko
  • Patent number: 10988561
    Abstract: A method for industrial production of a butadiene-isoprene copolymer rubber having a trans-1,4-structure (TBIR) and an apparatus for implementing the method. The production method includes: pumping a predetermined amount of a butadiene and an isoprene into a polymerization reactor, and performing bulk polymerization in the presence of a catalyst to obtain TBIR; performing extrusion, devolatilization, granulation and drying on the produced TBIR, and then packaging the produced TBIR; and separating unreacted monomers by a recovery and separation device followed by separately refining the unreacted monomers, and then returning the unreacted monomers to a batching device or a storage tank. The production apparatus has a recovery and refining unit, a polymerization unit, a post-treatment unit and a utility unit. By the production apparatus and the production method industrial production of TBIR by bulk polymerization is realized.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: April 27, 2021
    Assignees: QINGDAO UNIVERSITY OF SCIENCE AND TECHNOLOGY, SHANDONG HUAJU POLYMER MATERIALS CO., LTD., CHAMBROAD CHEMICAL INDUSTRY RESEARCH INSTITUTE CO., LTD.
    Inventors: Aihua He, Yunsheng Ma, Huafeng Shao, Gang Yao, Chenguang Liu, Bo Luan, Riguo Wang
  • Patent number: 10894168
    Abstract: An automated external defibrillator (AED) is described which includes two electrocardiogram (ECG) analyzers. One of the ECG analyzers is suitable for use only for ECG which is signal-noise-free, and thus may be used during “hands-off” analysis periods in which no cardiopulmonary resuscitation (CPR) compressions can be provided. The length of the “hands-off” analysis period can be shortened by use of the second ECG analyzer in concert with the first ECG analyzer. Thus, a greater proportion of CPR time through the course of a cardiac arrest rescue is achieved.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 19, 2021
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Chenguang Liu, Eric Grant Halsne, Stacy Earl Gehman, Dawn Blilie Jorgenson, Vijay Aditya Tadipatri
  • Patent number: 10863157
    Abstract: A method comprising receiving an input video signal comprising high dynamic range (HDR) video for presentation on a display device, and receiving metadata for the input video signal. The metadata comprises a first Bezier curve for tone mapping of the HDR video that fits a first peak luminance level. The method further comprises adjusting the first Bezier curve to a second Bezier curve for tone mapping of the HDR video that fits a second peak luminance level. The display device has the second peak luminance level, and the second peak luminance level is different from the first peak luminance level. The method further comprises producing a tone mapped video signal of the input video signal utilizing the second Bezier curve. The tone mapped video signal is provided to the display device for presentation.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: December 8, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeong-Taeg Kim, Li Tao, Pradeep Nagesh, Chenguang Liu
  • Publication number: 20200297577
    Abstract: An apparatus and method provides improved guidance instructions to providers of cardiopulmonary resuscitation (CPR) compressions in a cardiac arrest event. The apparatus detects CPR rate and/or changes in CPR rate, and issues prompts related to checking the depth of compressions based upon the rate/rate change detection. The prompts may be aural or visual.
    Type: Application
    Filed: September 18, 2018
    Publication date: September 24, 2020
    Inventors: Dawn Billie JORGENSON, Chenguang Liu LIU
  • Patent number: 10772516
    Abstract: A heart rate monitor (40) for detecting a pulse of a person (10) employs a platform (43), a plurality of multi-axis accelerometers (41R, 41L) and a pulse detector (44). The multi-axis accelerometers (41R, 41L) are adjoined to the platform (43) to generate differential mode signals (AZR, AZL) indicative of a sensing by the accelerometers (41) of physiological motion (12) of the person (10) relative to acceleration sensing axes (42R, 42L) and to generate common mode signals (AXR, AXL, AYR, AYL) indicative of a sensing by the accelerometers (41R, 41L) of extraneous motion by the person (10) relative to the acceleration sensing axes (42R, 42L). The pulse detector (44) is operably connected to the multi-axis accelerometers (41R, 41L) to generate a pulse signal (PS)as a function of a vertical alignment of the acceleration sensing axes (42R, 42L) combining the differential mode signals (AZR, AZL) and cancelling the common mode signals (AXR, AXL, AYR, AYL).
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: September 15, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: James Knox Russell, Haris Duric, Chenguang Liu
  • Publication number: 20200257009
    Abstract: The present invention discloses a submarine seismic monitoring apparatus and system based on the submarine Internet of things.
    Type: Application
    Filed: September 27, 2018
    Publication date: August 13, 2020
    Applicants: THE FIRST INSTITUTE OF OCEANOGRAPHY, MNR, SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Yanliang PEI, Baohua LIU, Pengyao ZHI, Guangming KAN, Chenguang LIU
  • Publication number: 20200234275
    Abstract: A solution for compatibility between TUI display and Android display is provided. Based on a native control provided by a rich operating system, a customized secure control is further added, thereby simplifying TUI development. Further, the rich operating system performs drawing processing on a native control in a user interface, synchronizes a non-secure surface obtained after processing to a frame buffer of a trusted operating system on a TEE side, and transfers identified information about a secure control in the user interface to the trusted operating system on the TEE side. The trusted operating system processes drawing processing on the secure control based on the information about the secure control and a customization method corresponding to the secure control, composites a secure surface and the non-secure surface that are obtained after processing, and then displays a composited surface by using a display.
    Type: Application
    Filed: April 8, 2020
    Publication date: July 23, 2020
    Inventors: Peng ZHANG, Chenguang LIU
  • Publication number: 20200139143
    Abstract: A defibrillator (AED) and method for using a defibrillator using two different ECG analysis algorithms which work sequentially to improve the accuracy of AED shock decisions. A first algorithm, such as (ART), is particularly suited for analysis in the presence of CPR periods. A second algorithm, such as (PAS), is particularly suited for analysis during hands-off periods. The AED switches algorithms depending on the period and on the current analysis of the cardiac rhythm. The inventions thus provide an optimized ECG analysis scheme in a manner that improves the effectiveness of the rescue, resulting in more CPR “hands-on” time, better treatment of refibrillation, and reduced transition times between CPR and electrotherapy.
    Type: Application
    Filed: January 8, 2020
    Publication date: May 7, 2020
    Inventors: CHENGUANG LIU, STACY EARL GEHMAN, JAMES KNOX RUSSELL, CHRISTOPHER WILLIAM FLEMING, DAWN BLILIE JORGENSON, DAVID ROY AXNESS, JEFFREY MARTIN BOSCHEE
  • Patent number: 10583305
    Abstract: A method and associated apparatus (12) detects the presence and quality of chest compressions during cardiopulmonary resuscitation (CPR) by analyzing existing signals in automated external defibrillator (AED) devices without using a stand-alone CPR meter. The method includes analyzing both a thoracic impedance signal and a common-mode current signal, each of which can be measured with standard AED pads (18). The method applies criteria to the measured signals, the criteria being used to select which of the measured signals to use for providing CPR chest compression detections.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: March 10, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Chenguang Liu, James Knox Russell, Dawn Blilie Jorgenson, Haris Duric, Stacy Earl Gehman, Christopher William Fleming