Patents by Inventor Chun-Hsiang Chen

Chun-Hsiang Chen 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: 20250192900
    Abstract: A calibration method to find the impedance of a radio frequency front-end (RFFE) is provided. The RFFE includes a feedback end and a tuner. The tuner is set to a first predetermined setting to have a first impedance. An output end of the tuner is set to different calibration settings. The first reflection coefficient sets at the feedback end is obtained. The second impedance from the feedback end of the RFFE to an input end of the tuner is calculated based on the first reflection coefficient. The tuner is set to a second predetermined setting. The second reflection coefficient sets at the feedback end is obtained. The third impedance of the tuner in the second predetermined setting is calculated based on the second impedance from the feedback end of the RFFE to the input end of the tuner and the second reflection coefficient sets.
    Type: Application
    Filed: December 7, 2023
    Publication date: June 12, 2025
    Inventors: Chun-Hsiang CHEN, Chin-Wei HSU, Po-Chung HSIAO, Sin-Sheng WONG, Yen-Liang CHEN
  • Publication number: 20240195451
    Abstract: A method for performing antenna tuning control of a wireless transceiver device in a wireless communications system and associated apparatus are provided.
    Type: Application
    Filed: December 8, 2023
    Publication date: June 13, 2024
    Applicant: MEDIATEK INC.
    Inventors: Yen-Liang Chen, Chun-Hsiang Chen, Po-Chung Hsiao, Kuo-Hao Chen
  • Publication number: 20230369431
    Abstract: A semiconductor structure and a method for manufacturing a semiconductor structure are provided. The semiconductor structure includes: a substrate; a gate trench located in the substrate; a gate oxide layer located on a side wall and a bottom of the gate trench; and a gate conductive layer located on a surface of the gate oxide layer, a top of the gate conductive layer being lower than a top of the gate trench. The gate oxide layer includes an ion implantation area. A bottom of the ion implantation area is higher than a bottom of the gate conductive layer and lower than the top of the gate conductive layer, and a top of the ion implantation area is higher than or flush with the top of the gate conductive layer.
    Type: Application
    Filed: August 24, 2022
    Publication date: November 16, 2023
    Inventors: WEI CHANG, CHUN-HSIANG CHEN, Zhaohong LV, Yongchang ZHUO, TIEH-CHIANG WU
  • Patent number: 8894777
    Abstract: A surface treatment method of a magnesium alloy article includes, instead of forming a primer on a magnesium alloy based composite first, directly performing a hairline finish process on the magnesium alloy based composite, to form a hairline structure on a surface of the magnesium alloy based composite, and performing a chemical oxidation process on the magnesium alloy based composite, to form a glossy film covering the hairline structure on the magnesium alloy based composite, thereby forming a magnesium alloy article structure. Alternatively, another chemical oxidation process is performed before the hairline finish process, to form an oxide film on the surface of the magnesium alloy based composite.
    Type: Grant
    Filed: September 25, 2011
    Date of Patent: November 25, 2014
    Assignee: Getac Technology Corporation
    Inventor: Chun-Hsiang Chen
  • Publication number: 20120125487
    Abstract: A surface treatment method of a magnesium alloy article includes, instead of forming a primer on a magnesium alloy based composite first, directly performing a hairline finish process on the magnesium alloy based composite, to form a hairline structure on a surface of the magnesium alloy based composite, and performing a chemical oxidation process on the magnesium alloy based composite, to form a glossy film covering the hairline structure on the magnesium alloy based composite, thereby forming a magnesium alloy article structure. Alternatively, another chemical oxidation process is performed before the hairline finish process, to form an oxide film on the surface of the magnesium alloy based composite.
    Type: Application
    Filed: September 25, 2011
    Publication date: May 24, 2012
    Applicant: GETAC TECHNOLOGY CORPORATION
    Inventor: Chun-Hsiang CHEN
  • Patent number: 7908024
    Abstract: A method for detecting tool errors to stop a process recipe for a single chamber is disclosed. When a recipe error for one of chamber of a process tool is detected, only the chamber with the recipe error is terminated and other chambers are allowed to proceed with their recipe processes for preventing excursions.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: March 15, 2011
    Assignee: Inotera Memories, Inc.
    Inventors: Chun-Hsiang Chen, Yun-Sen Lai, Keng-Hsien Ho, Chien-Lung Tseng, Hung-Chih Kuo
  • Publication number: 20090254208
    Abstract: A method for detecting tool errors to stop a process recipe for a single chamber is disclosed. When a recipe error for one of chamber of a process tool is detected, only the chamber with the recipe error is terminated and other chambers are allowed to proceed with their recipe processes for preventing excursions.
    Type: Application
    Filed: July 1, 2008
    Publication date: October 8, 2009
    Applicant: INOTERA MEMORIES, INC.
    Inventors: Chun-Hsiang Chen, Yun-Sen Lai, Keng-Hsien Ho, Chien-Lung Tseng, Hung-Chih Kuo