Patents by Inventor Pin Chang

Pin Chang 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: 12407263
    Abstract: A back-end energy storage isolation fly-back conversion apparatus (10) includes a return switch (Q1), a driving switch (Q2), an energy storage capacitor (Cs), a transformer (T1), a resonant inductor (Lr), a first rectifier (104), an output capacitor (Cout), and a controller (116). The transformer (T1) includes a primary-side winding (Lm) and a secondary-side first winding (102). The return switch (Q1) is turned on by the controller (116), so that the energy storage capacitor (Cs) is charged by a primary-side current (I1) flowing through the resonant inductor (Lr), the primary-side winding (Lm), and the return switch (Q1), and the secondary-side first winding (102) is powered by the primary-side current (I1). When the primary-side current (I1) becomes negative, the energy storage capacitor (Cs) discharges through the return switch (Q1) and the primary-side winding (Lm) and continuously supplies power to the secondary-side first winding (102).
    Type: Grant
    Filed: October 16, 2023
    Date of Patent: September 2, 2025
    Assignee: WISETOP TECHNOLOGY CO., LTD.
    Inventors: Wei-Chen Liang, Pin Chang
  • Patent number: 12298512
    Abstract: Disclosed are systems and methods for expanding eyebox for a viewer, such as for the near eye display applying retinal projecting technologies from a head wearable device such as smart glasses. The system includes at least one image projector and at least one optical duplicator, where the optical duplicator is used to perform a light split to generate multiple instances of an incident light signal to achieve eyebox expansion for the viewer. An alternative system includes at least one image projector and at least one optical reflector, where the optical reflector is moved to perform a time split to redirect multiple light signals at different angles of incidence to achieve eyebox expansion for the viewer.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: May 13, 2025
    Assignee: Oomii Inc.
    Inventors: Feng-Chun Yeh, Guo-Hsuan Chen, Pin Chang
  • Publication number: 20240235402
    Abstract: A back-end energy storage isolation fly-back conversion apparatus (10) includes a return switch (Q1), a driving switch (Q2), an energy storage capacitor (Cs), a transformer (Ti), a resonant inductor (Lr), a first rectifier (104), an output capacitor (Cout), and a controller (116). The transformer (T1) includes a primary-side winding (Lm) and a secondary-side first winding (102). The return switch (Q1) is turned on by the controller (116), so that the energy storage capacitor (Cs) is charged by a primary-side current (I1) flowing through the resonant inductor (Lr), the primary-side winding (Lm), and the return switch (Q1), and the secondary-side first winding (102) is powered by the primary-side current (I1). When the primary-side current (I1) becomes negative, the energy storage capacitor (Cs) discharges through the return switch (Q1) and the primary-side winding (Lm) and continuously supplies power to the secondary-side first winding (102).
    Type: Application
    Filed: October 16, 2023
    Publication date: July 11, 2024
    Inventors: Wei-Chen LIANG, Pin CHANG
  • Publication number: 20240136933
    Abstract: A back-end energy storage isolation fly-back conversion apparatus (10) includes a return switch (Q1), a driving switch (Q2), an energy storage capacitor (Cs), a transformer (Ti), a resonant inductor (Lr), a first rectifier (104), an output capacitor (Cout), and a controller (116). The transformer (T1) includes a primary-side winding (Lm) and a secondary-side first winding (102). The return switch (Q1) is turned on by the controller (116), so that the energy storage capacitor (Cs) is charged by a primary-side current (I1) flowing through the resonant inductor (Lr), the primary-side winding (Lm), and the return switch (Q1), and the secondary-side first winding (102) is powered by the primary-side current (I1). When the primary-side current (I1) becomes negative, the energy storage capacitor (Cs) discharges through the return switch (Q1) and the primary-side winding (Lm) and continuously supplies power to the secondary-side first winding (102).
    Type: Application
    Filed: October 15, 2023
    Publication date: April 25, 2024
    Inventors: Wei-Chen LIANG, Pin CHANG
  • Patent number: 11959834
    Abstract: A manufacturing method of a sample collection component, by which a removable light shielding component is disposed on a main body of the sample collection component to shield at least a portion of the light that passes through a storing space of the sample collection component.
    Type: Grant
    Filed: June 16, 2023
    Date of Patent: April 16, 2024
    Assignee: Materials Analysis Technology Inc.
    Inventors: Pin Chang, Ying-Chan Hung, Hung-Jen Chen
  • Patent number: 11803608
    Abstract: A system for processing data is provided. The system includes a data acquisition device and a central device. The data acquisition device is coupled to an object under test for receiving raw data from the object under test, and transmits the raw data. The central device receives the raw data from the data acquisition device, and performs a web application with a web interface for providing application data based on the raw data.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: October 31, 2023
    Assignees: BIOPRO SCIENTIFIC CO., LTD., WISETOP TECHNOLOGY CO., LTD.
    Inventor: Pin Chang
  • Publication number: 20230332985
    Abstract: A manufacturing method of a sample collection component, by which a removable light shielding component is disposed on a main body of the sample collection component to shield at least a portion of the light that passes through a storing space of the sample collection component.
    Type: Application
    Filed: June 16, 2023
    Publication date: October 19, 2023
    Applicant: Materials Analysis Technology Inc.
    Inventors: Pin Chang, Ying-Chan Hung, Hung-Jen Chen
  • Patent number: 11745013
    Abstract: A method for treating movement disorders is provided. The method includes the following operations. A central nervous signal of a patient with movement disorders is recorded. A first stimulation is delivered from a stimulator to the patient when an oscillation episode in a range of from about 3 Hz to about 20 Hz is observed in the central nervous signal. The first stimulation is adapted according to a measurable feature of the oscillation episode. The system for treating movement disorders is also provided.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: September 5, 2023
    Assignees: BIOPRO SCIENTIFIC CO., LTD., NATIONAL TSING HUA UNIVERSITY
    Inventors: Pin Chang, Hsin Chen, Yen-Chung Chang, Shih-Rung Yeh
  • Publication number: 20230168513
    Abstract: Disclosed are systems and methods for expanding eyebox for a viewer, including (but not limited to) for the near eye display applying retinal projecting technologies from a head wearable device such as smart glasses. This disclosure includes two embodiments. The first embodiment applying a principle of “light-split” comprises an optical duplicator to generate multiple instances of an incident light signal to achieve eyebox expansion for a viewer. The second embodiment applying a principle of “time-split” comprises an optical reflector moving to redirect multiple light signals at a different angle of incidence to achieve eyebox expansion for a viewer.
    Type: Application
    Filed: June 21, 2021
    Publication date: June 1, 2023
    Applicant: HES IP HOLDINGS, LLC
    Inventors: Feng-Chun YEH, Guo-Hsuan CHEN, Pin CHANG
  • Patent number: 11452864
    Abstract: A method for treating neural disorders is provided. The method includes the following operation. A stimulation is delivered to a layer of a cortex of a patient with a neural disorder, wherein the stimulation is delivered to less than all layers of the cortex of the patient. In another method for treating neural disorders, a stimulation is delivered to a cortex of a patient with a neural disorder, wherein the stimulation delivered to one of a plurality of layers of the cortex is stronger than to other layers of the cortex. The system for treating neural disorder is also provided. The system includes a stimulation signal generator and a layer-specific stimulation means. The layer-specific stimulation means is coupled to the stimulation signal generator, configured to deliver a stimulation to a specific layer of a cortex of a patient with a neural disorder.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: September 27, 2022
    Assignees: BIOPRO SCIENTIFIC CO., LTD., NATIONAL TSING HUA UNIVERSITY
    Inventors: Pin Chang, Hsin Chen, Yen-Chung Chang, Shih-Rung Yeh
  • Publication number: 20210321930
    Abstract: The application discloses an electronic device set including a modular appliance. The modular appliance includes a first power supplier, a processing device, and a connector. The power device includes a first power supply terminal, a second power supply terminal and at least one first signal terminal. The the processing device is configured to perform data acquisition and electrical stimulation on a biological subject via the at least one first signal terminal. The connector includes contacts coupled to the first electrode, the second electrode, the first power supply terminal, the second power supply terminal, and the at least one first signal terminal, respectively.
    Type: Application
    Filed: January 6, 2021
    Publication date: October 21, 2021
    Inventors: HSING-HUA HO, HSIN CHEN, PIN CHANG
  • Publication number: 20200380052
    Abstract: A system for processing data is provided. The system includes a data acquisition device and a central device. The data acquisition device is coupled to an object under test for receiving raw data from the object under test, and transmits the raw data. The central device receives the raw data from the data acquisition device, and performs a web application with a web interface for providing application data based on the raw data.
    Type: Application
    Filed: May 27, 2020
    Publication date: December 3, 2020
    Inventor: PIN CHANG
  • Publication number: 20200368522
    Abstract: A method for treating neural disorders is provided, The method includes the following operation. A stimulation is delivered to a layer of a cortex of a patient with a neural disorder, wherein the stimulation is delivered to less than all layers of the cortex of the patient. In another method for treating neural disorders, a stimulation is delivered to a cortex of a patient with a neural disorder, wherein the stimulation delivered to one of a plurality of layers of the cortex is stronger than to other layers of the cortex. The system for treating neural disorder is also provided. The system includes a stimulation signal generator and a layer-specific stimulation means. The layer-specific stimulation means is coupled to the stimulation signal generator, configured to deliver a stimulation to a specific layer of a cortex of a patient with a neural disorder.
    Type: Application
    Filed: May 19, 2020
    Publication date: November 26, 2020
    Inventors: PIN CHANG, HSIN CHEN, YEN-CHUNG CHANG, SHIH-RUNG YEH
  • Publication number: 20200368530
    Abstract: A method for treating movement disorders is provided. The method includes the following operations. A central nervous signal of a patient with movement disorders is recorded. A first stimulation is delivered from a stimulator to the patient when an oscillation episode in a range of from about 3 Hz to about 20 Hz is observed in the central nervous signal. The first stimulation is adapted according to a measurable feature of the oscillation episode. The system for treating movement disorders is also provided.
    Type: Application
    Filed: May 19, 2020
    Publication date: November 26, 2020
    Inventors: PIN CHANG, HSIN CHEN, YEN-CHUNG CHANG, SHIH-RUNG YEH
  • Patent number: 10416050
    Abstract: A liquid sample drying device, dried sample test piece and the preparation method for the dried sample test piece are provided. The liquid sample drying device includes two substrates, at least one spacer and a clamping member. Each of the two substrates includes a surface. The two surfaces face each other. The at least one spacer is located in between the substrates so as to form a sample region between the surfaces for receiving a liquid sample. The clamping member touches the two substrates so as to temporarily clamp and fix the two substrates and the at least one spacer together.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: September 17, 2019
    Assignee: Materials Analysis Technology, Inc.
    Inventors: Lin-Ai Tai, Yu-Ching Chen, Chih-Jung Sun, Pin Chang
  • Patent number: 10379075
    Abstract: A sample collection device includes two substrates and a spacer. The two substrates are disposed oppositely. Each substrate has a first surface, a second surface opposing to the first surface, a first recess and at least one second recess. The two substrates are arranged with the first surfaces facing each other, and the first and second recesses are respectively located on each first surface. The first recesses of the substrates jointly form a first channel, and the second recesses of the substrates jointly form a second channel connected to the outside of the sample collection device. The first channel and the second channel are interconnected. The spacer is disposed between the two first surfaces for bonding and fixing the two substrates. A sample containing space is formed between the two substrates and the spacer. The sample containing space includes the first chancel and the second channel. In addition, a manufacturing method of the sample collection device is also provided.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: August 13, 2019
    Assignee: Materials Analysis Technology Inc.
    Inventors: Pin Chang, Hung-Jen Chen
  • Publication number: 20190226946
    Abstract: A manufacturing method of a sample collection component, by which a removable light shielding component is disposed on a main body of the sample collection component to shield at least a portion of the light that passes through a storing space of the sample collection component.
    Type: Application
    Filed: April 3, 2019
    Publication date: July 25, 2019
    Applicant: Materials Analysis Technology Inc.
    Inventors: Pin Chang, Ying-Chan Hung, Hung-Jen Chen
  • Patent number: 10309875
    Abstract: A sample collection component including a main body and a removable light shielding component is provided. The main body has a sample storing space which is sealable and allows light to pass through. The removable light shielding component is disposed on the main body and located outside the sample storing space for shielding at least a portion of the light passing through the sample storing space. In addition, a manufacturing method of the sample collection component is also provided.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: June 4, 2019
    Assignee: Materials Analysis Technology Inc.
    Inventors: Pin Chang, Ying-Chan Hung, Hung-Jen Chen
  • Publication number: 20170307484
    Abstract: A liquid sample drying device, dried sample test piece and the preparation method for the dried sample test piece are provided. The liquid sample drying device includes two substrates, at least one spacer and a clamping member. Each of the two substrates includes a surface. The two surfaces face each other. The at least one spacer is located in between the substrates so as to form a sample region between the surfaces for receiving a liquid sample. The clamping member touches the two substrates so as to temporarily clamp and fix the two substrates and the at least one spacer together.
    Type: Application
    Filed: September 10, 2014
    Publication date: October 26, 2017
    Applicant: BIO MATERIALS ANALYSIS TECHNOLOGY CO., LTD.
    Inventors: LIN-AI TAI, YU-CHING CHEN, CHIH-JUNG SUN, PIN CHANG
  • Publication number: 20170292927
    Abstract: A sample collection device includes two substrates and a spacer. The two substrates are disposed oppositely. Each substrate has a first surface, a second surface opposing to the first surface, a first recess and at least one second recess. The two substrates are arranged with the first surfaces facing each other, and the first and second recesses are respectively located on each first surface. The first recesses of the substrates jointly form a first channel, and the second recesses of the substrates jointly form a second channel connected to the outside of the sample collection device. The first channel and the second channel are interconnected. The spacer is disposed between the two first surfaces for bonding and fixing the two substrates. A sample containing space is formed between the two substrates and the spacer. The sample containing space includes the first chancel and the second channel. In addition, a manufacturing method of the sample collection device is also provided.
    Type: Application
    Filed: June 6, 2016
    Publication date: October 12, 2017
    Inventors: Pin Chang, Hung-Jen Chen