Patents by Inventor Cheng-Han Tsai

Cheng-Han Tsai 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: 20240118526
    Abstract: An imaging system lens assembly includes a first lens group and a second lens group. The first lens group includes a first catadioptric lens element and a second catadioptric lens element, the second lens group includes at least one lens element. Each of an object-side surface and an image-side surface of the first catadioptric lens element and the second catadioptric lens element includes a central region and a peripheral region. The peripheral region of the object-side surface of the first catadioptric lens element includes a first refracting surface. The peripheral region of the image-side surface of the second catadioptric lens element includes a first reflecting surface. The central region of the object-side surface of the first catadioptric lens element includes a second reflecting surface. The central region of the image-side surface of the second catadioptric lens element includes a last refracting surface.
    Type: Application
    Filed: September 26, 2023
    Publication date: April 11, 2024
    Inventors: Shih-Han CHEN, Cheng-Yu TSAI, Hsin-Hsuan HUANG
  • Publication number: 20240111138
    Abstract: A catadioptric optical membrane, which is disposed on a surface of a substrate, includes a reflection membrane and a matting membrane. The reflection membrane is disposed on an effective optical path area of the substrate and includes a reflection metal membrane and a reflection oxidation membrane. The reflection oxidation membrane includes a first reflection oxidation membrane and a second reflection oxidation membrane. The reflection metal membrane is farther away from the substrate than the first reflection oxidation membrane. The second reflection oxidation membrane is farther away from the substrate than the reflection metal membrane. The matting membrane is disposed on a non-effective optical path area of the substrate. The matting membrane includes a deep-color membrane and a first anti-reflection membrane. The deep-color membrane includes a deep-color metal membrane and a deep-color oxidation membrane. The deep-color membrane is farther away from the substrate than the first anti-reflection membrane.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 4, 2024
    Inventors: Wen-Yu TSAI, Shih-Han CHEN, Chun-Yen CHEN, Cheng-Yu TSAI, Chun-Hung TENG
  • Publication number: 20240103641
    Abstract: In one example, a keyboard housing may include a chassis, a plurality of keys exposed through a top surface of the chassis, and an input device assembly connected to the chassis. The input device assembly may include a flexible touch sensing component to receive a touch input and a support structure. The support structure may include a first portion and a second portion foldable onto the first portion. The first portion and the second portion may support the flexible touch sensing component.
    Type: Application
    Filed: November 6, 2019
    Publication date: March 28, 2024
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Cheng-Han Tsai, Midas Wu, Wen-Hung Wang
  • Publication number: 20240071947
    Abstract: A semiconductor package including a ring structure with one or more indents and a method of forming are provided. The semiconductor package may include a substrate, a first package component bonded to the substrate, wherein the first package component may include a first semiconductor die, a ring structure attached to the substrate, wherein the ring structure may encircle the first package component in a top view, and a lid structure attached to the ring structure. The ring structure may include a first segment, extending along a first edge of the substrate, and a second segment, extending along a second edge of the substrate. The first segment and the second segment may meet at a first corner of the ring structure, and a first indent of the ring structure may be disposed at the first corner of the ring structure.
    Type: Application
    Filed: August 30, 2022
    Publication date: February 29, 2024
    Inventors: Yu-Ling Tsai, Lai Wei Chih, Meng-Tsan Lee, Hung-Pin Chang, Li-Han Hsu, Chien-Chia Chiu, Cheng-Hung Lin
  • Publication number: 20240067512
    Abstract: An automatic fluid replacement device is adapted to be mounted on an opening of a storage barrel. The automatic fluid replacement device includes a robotic arm, at least one fluid convey joint and a controller. The robotic arm has a gripper. The fluid convey joint includes a convey pipe, a sleeve and a sealing bag. The convey pipe is configured to deliver a fluid. The sleeve is sleeved on the convey pipe. The gripper clamps the sleeve. The sealing bag is sleeved on the sleeve. The controller is configured for automatically controlling the robotic arm to move the fluid convey joint into the opening and controlling the sealing bag to be inflated to seal the opening.
    Type: Application
    Filed: October 27, 2022
    Publication date: February 29, 2024
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Cheng-Han TSAI, Wei-Lung PAN, Chih-Ta WU, I-hsin LIN
  • Publication number: 20240018131
    Abstract: Hydantoin based compounds useful as inhibitors of matrix metalloproteinases (MMPs), particularly macrophage elastase (MMP-12) are described. Also described are related compositions and methods of using the compounds to inhibit MMP-12 and treat diseases mediated by MMP-12, such as asthma, chronic obstructive pulmonary disease (COPD), emphysema, acute lung injury, idiopathic pulmonary fibrosis (IPF), sarcoidosis, systemic sclerosis, liver fibrosis, nonalcoholic steatohepatitis (NASH), arthritis, cancer, heart disease, inflammatory bowel disease (IBD), acute kidney injury (AKI), chronic kidney disease (CKD), Alport syndrome, and nephritis.
    Type: Application
    Filed: July 6, 2023
    Publication date: January 18, 2024
    Inventors: Wenjin Yang, Kai-Wei Chang, Suying Liu, Cheng-Han Tsai
  • Publication number: 20230415142
    Abstract: The invention relates to a control unit for a fluid control device wherein the control unit comprises a pressure unit for providing positive and/or negative pressure, at least one first control unit outlet being fluidically connectable to a processing device comprising at least one receptacle for receiving a fluid sample, at least one second control unit outlet being fluidically connectable to a treatment device having a chamber for receiving the processing device, and a connection unit by means of which the pressure unit is fluidically connectable or connected with the first control unit outlet and/or with the second control unit outlet wherein the control unit is adapted to control the processing of the fluid sample in the processing device by applying a positive or negative pressure provided by the pressure unit to the first control unit outlet by means of the connection unit and to control a physical state in the chamber of the treatment device.
    Type: Application
    Filed: November 29, 2021
    Publication date: December 28, 2023
    Inventors: Cheng-Han TSAI, Da-Han KUAN, Cheng-Yu JIANG
  • Patent number: 11845044
    Abstract: The invention relates to a method for processing a liquid sample situated in a receptacle, wherein an attachment device is attached to the receptacle such that at least one fluid line protrudes into the liquid sample and a fluid is directly dispensed into the liquid sample through the fluid line and/or a portion of the liquid sample is aspirated into the fluid line.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: December 19, 2023
    Assignee: CYTENA BIOPROCESS SOLUTIONS CO., LTD.
    Inventors: Jonas Schöndube, Cheng-Han Tsai, Andre Gross, Stefan Zimmermann, Peter Koltay
  • Patent number: 11739080
    Abstract: Hydantoin based compounds useful as inhibitors of matrix metalloproteinases (MMPs), particularly macrophage elastase (MMP-12) are described. Also described are related compositions and methods of using the compounds to inhibit MMP-12 and treat diseases mediated by MMP-12, such as asthma, chronic obstructive pulmonary disease (COPD), emphysema, acute lung injury, idiopathic pulmonary fibrosis (IPF), sarcoidosis, systemic sclerosis, liver fibrosis, nonalcoholic steatohepatitis (NASH), arthritis, cancer, heart disease, inflammatory bowel disease (IBD), acute kidney injury (AKI), chronic kidney disease (CKD), Alport syndrome, and nephritis.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: August 29, 2023
    Assignee: Foresee Pharmaceuticals USA, Inc.
    Inventors: Wenjin Yang, Kai-Wei Chang, Suying Liu, Cheng-Han Tsai
  • Patent number: 11648667
    Abstract: A processing path generating device including an intuitive path teaching device and a controller is provided. The intuitive path teaching device is provided for gripping and moving with respect to a workpiece to create a moving path. The intuitive path teaching device has a detecting portion for detecting a surface feature of the workpiece. The controller is connected to the intuitive path teaching device. The controller generates a processing path according to the moving path of the intuitive path teaching device and the surface feature of the workpiece.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: May 16, 2023
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Tien-Yun Chi, Cheng-Han Tsai, Kuo-Feng Hung
  • Publication number: 20230135341
    Abstract: An example printed circuit board includes: a fixed portion disposed on the printed circuit board, the fixed portion defining a first end of a card slot to receive a card on the printed circuit board; a support bracket to be installed on the printed circuit board, the support bracket including a retaining portion to retain the card in the card slot, the retaining portion defining a second end of the card slot; and wherein the support bracket is orientable in one of: (i) a first orientation to define a first length of the card slot between the fixed portion and the retaining portion and (ii) a second orientation to define a second length of the card slot between the fixed portion and the retaining portion.
    Type: Application
    Filed: October 28, 2021
    Publication date: May 4, 2023
    Inventors: Wen Yen Tang, Cheng-Han Tsai, Chong-Wei Wu, Wen Hua Ni
  • Publication number: 20230120816
    Abstract: In some examples, an electronic device includes a wireless charger, a detector, and a controller. The controller is to detect a peripheral device via the detector and, in response to detecting the peripheral device via the detector, determine an operation mode of the wireless charger, the operation mode including a power saving mode, a standby mode, and a charging mode.
    Type: Application
    Filed: October 18, 2021
    Publication date: April 20, 2023
    Inventors: Yen-Chi CHEN, Chi-Chu CHEN, Hui-Jen TSENG, Wen-Hua NI, Jun-Hung CHOU, Cheng-Kai CHEN, Cheng-Han TSAI
  • Publication number: 20230101000
    Abstract: Examples of an input device holder assembly are described herein. In one example, the input device holder assembly can include a first holding element and a second holding element to cooperate with the first holding element to hold a writing instrument. The first holding element includes a first receptacle channel and the second holding element includes a second receptacle channel. Both, the first and the second receptacle channels are formed as open-ended slots. The first holding element and the second holding element are positioned relative to each other to align the first receptacle channel and the second receptacle channel to receive and remove the writing instrument.
    Type: Application
    Filed: March 27, 2020
    Publication date: March 30, 2023
    Inventors: Cheng-Han Tsai, Wen-Hua Ni, Tai-Hsiang Chen
  • Publication number: 20230060736
    Abstract: A single image deraining method is proposed. A wavelet transforming step processes an initial rain image to generate an i-th stage low-frequency rain image and a plurality of i-th stage high-frequency rain images. An image deraining step inputs the i-th stage low-frequency rain image to a low-frequency deraining model to output an i-th stage low-frequency derain image. A first inverse wavelet transforming step recombines the n-th stage low-frequency derain image with the n-th stage high-frequency derain images to form an n-th stage derain image. A weighted blending step blends a (n?1)-th stage low-frequency derain image with the n-th stage derain image to generate a (n?1)-th stage blended derain image. A second inverse wavelet transforming step recombines the (n?1)-th stage high-frequency derain images with the (n?1)-th stage blended derain image to form a (n?1)-th stage derain image, and sets n to n?1 and repeats the last two steps.
    Type: Application
    Filed: October 28, 2021
    Publication date: March 2, 2023
    Inventors: Wei-Yen HSU, Cheng-Han TSAI
  • Patent number: 11586254
    Abstract: An example apparatus includes a first flexible portion connected to a second flexible portion. The first flexible portion includes a keyboard having a set of input keys disposed thereon and circuitry coupled to the set of input keys, the first flexible portion is to couple to a portable computing device proximal to a display side of the portable computing device. The second flexible portion has a plurality of fasteners to couple to a kickstand of the portable computing device, the first and second flexible portion to provide an opposing force there between while the kickstand is disposed at one of a plurality of variable support angles.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: February 21, 2023
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Cheng-Han Tsai, Wen-Hua Ni, Chi Chun Chiang, Hung-Yen Chi
  • Patent number: 11562527
    Abstract: A method further includes the following steps. Firstly, a three-dimensional picture under a generated background condition is generated, wherein the three-dimensional picture includes a three-dimensional object image. Then, a two-dimensional picture of the three-dimensional picture is captured, wherein the two-dimensional picture includes a two-dimensional object image of the three-dimensional object image. Then, an object region of the two-dimensional object image is recognized. Then, an exposed ratio of an exposed area of an exposed region of the object region to an object area of the object region is obtained. Then, whether the exposed ratio is greater than a preset ratio is determined. Then the exposed region is defined as the pick-and-place region when the exposed ratio is greater than the preset ratio.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: January 24, 2023
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Cheng-Han Tsai, Kuo-Feng Hung
  • Publication number: 20220408067
    Abstract: A visual recognition based method for projecting patterned light includes: projecting a calibration image onto a projection screen by a projection module; capturing the calibration image by an image-capturing module to obtain a calibration information between the projection module and the image-capturing module; capturing an object by the image-capturing module to obtain a to-be-recognized image of the object; detecting the object in the to-be-recognized image and acquiring a plurality of feature points associated with a plurality of feature areas of the object in the to-be-recognized image; retrieving a plurality of target feature points corresponding to a target object from the feature points; obtaining a projection coordinate of the target feature points\according to the calibration information and providing the projection coordinate to the projection module; and projecting a projection pattern with shape corresponding to the target object onto the object by the projection module according to the projectio
    Type: Application
    Filed: December 22, 2021
    Publication date: December 22, 2022
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Cheng-Han TSAI, Kuo-Feng HUNG
  • Publication number: 20220329162
    Abstract: An electrical power conversion device, a function triggering circuit for the electrical power conversion device, and a function triggering method for the electrical power conversion device are provided. The function triggering circuit is coupled between the secondary side of the transformer and the control module and includes a current detection circuit, a delay circuit and a switching circuit. The current detection circuit senses the secondary side of the transformer to generate a detection signal of delay. Before steady-state duty of the transformer, the delay circuit causes an initial level to be higher than an internal level. After steady-state duty of the transformer, the switching circuit selectively generates a function triggering signal according to the detection signal. The function triggering signal is for triggering the control module to carry out an overcurrent protection operation.
    Type: Application
    Filed: March 25, 2022
    Publication date: October 13, 2022
    Inventors: LUNG-CHI WEI, CHING-HUNG KUO, CHENG-HAN TSAI
  • Patent number: 11426346
    Abstract: A lutein-containing ophthalmic composition, wherein the ophthalmic composition is mainly consisting of a natural anti-inflammatory substance, a substance with increasing liquid viscosity, and an artificial tear. The substance with increasing liquid viscosity could apply the ophthalmic composition to elongate the retention time on the ocular surface, thereby increasing the retention time of anti-inflammatory substance on the ocular surface for treating dry eye syndrome and inhibiting ocular surface inflammation.
    Type: Grant
    Filed: October 13, 2019
    Date of Patent: August 30, 2022
    Assignee: TAIPEI MEDICAL UNIVERSITY
    Inventors: Ching-Li Tseng, I-Chan Lin, Yi-Zhou Chen, Yu-Lun Chuang, Cheng-Han Tsai, Zhi-Yu Chen
  • Publication number: 20220147110
    Abstract: An example apparatus includes a first flexible portion connected to a second flexible portion. The first flexible portion includes a keyboard having a set of input keys disposed thereon and circuitry coupled to the set of input keys, the first flexible portion is to couple to a portable computing device proximal to a display side of the portable computing device. The second flexible portion has a plurality of fasteners to couple to a kickstand of the portable computing device, the first and second flexible portion to provide an opposing force there between while the kickstand is disposed at one of a plurality of variable support angles.
    Type: Application
    Filed: July 30, 2019
    Publication date: May 12, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Cheng-Han Tsai, Wen-Hua Ni, Chi Chun Chiang, Hung-Yen Chi