Patents by Inventor Chien-Jung Huang

Chien-Jung Huang 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: 11323125
    Abstract: A transceiver circuit is configured to couple an oscillation crystal. The transceiver circuit includes a local oscillator, a filter circuit, a control circuit, and a radio frequency signal generator circuit. The local oscillator includes a capacitive element. The local oscillator generates a phase locked loop signal based on an oscillation frequency of the oscillation crystal and a capacitance value of the capacitive element. The filter circuit generates a filtered signal according to the phase locked loop signal. The control circuit adjusts the capacitance value to be an adjusted capacitance value according to the filtered signal and the phase locked loop signal. The local oscillator further generates a calibrated local oscillation signal according to the oscillation frequency and the adjusted capacitance value. The radio frequency signal generator circuit generates a radio frequency signal according to the calibrated local oscillation signal and a baseband signal.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: May 3, 2022
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Beng-Meng Chen, Chien-Jung Huang
  • Publication number: 20220109513
    Abstract: The present invention discloses a calibration method and calibration circuit for a wireless transceiver. The wireless transceiver includes a transmission path and a reception path, and there is a mixer on the transmission path. The calibration method includes the following steps: (A) adjusting a first parameter of a first LC tank circuit of the mixer; (B) receiving a first input signal via a coupling path and the reception path; (C) measuring a first power of the first input signal; (D) repeating steps (A) to (C) to obtain multiple first powers; and (E) determining a first target parameter corresponding to a largest power of the first powers.
    Type: Application
    Filed: July 7, 2021
    Publication date: April 7, 2022
    Inventors: CHIEN-JUNG HUANG, YI-HUA LU
  • Publication number: 20220085819
    Abstract: A transceiver circuit is configured to couple an oscillation crystal. The transceiver circuit includes a local oscillator, a filter circuit, a control circuit, and a radio frequency signal generator circuit. The local oscillator includes a capacitive element. The local oscillator generates a phase locked loop signal based on an oscillation frequency of the oscillation crystal and a capacitance value of the capacitive element. The filter circuit generates a filtered signal according to the phase locked loop signal. The control circuit adjusts the capacitance value to be an adjusted capacitance value according to the filtered signal and the phase locked loop signal. The local oscillator further generates a calibrated local oscillation signal according to the oscillation frequency and the adjusted capacitance value. The radio frequency signal generator circuit generates a radio frequency signal according to the calibrated local oscillation signal and a baseband signal.
    Type: Application
    Filed: March 12, 2021
    Publication date: March 17, 2022
    Inventors: Beng-Meng CHEN, Chien-Jung HUANG
  • Publication number: 20210245294
    Abstract: A scanning light source module for providing a pattern beam to a target object on a work plane is provided. The scanning light source module includes a light emitting device for providing a beam, a beam reducing/expanding device for adjusting an outer diameter of the beam, a shaping lens set for converting the beam into a pattern beam, a scanning reflective mirror set for reflecting the pattern beam to move along at least one direction, and a telecentric flat-field focusing element having an incident surface. The pattern beam has multiple parts. There is a spacing between the parts. The pattern beam is reflected to different positions on the incident surface by the rotation of the scanning reflective mirror set. There is a distance between the work plane and a focal plane of the telecentric flat-field focusing element.
    Type: Application
    Filed: May 22, 2020
    Publication date: August 12, 2021
    Applicant: Industrial Technology Research Institute
    Inventors: Kuang-Yao Huang, Chien-Jung Huang, Kun-Tso Chen, Hsuan-Chang Lee
  • Patent number: 11052436
    Abstract: A laser cleaning apparatus and a laser cleaning method are furnished, for switching the wavelengths of laser beams furnished by a single laser module using a wavelength switching module and cleaning a test piece using the laser beams having wavelengths and energy suitable for manufacturing needs. The laser cleaning method includes: creating a laser beam; switching the wavelength output by the laser based on process requirements; propagating the laser beam via an optical path propagating module for laser cleaning the test piece; and removing debris. A transfer platform allows movements of the laser beams with respect to the test piece to achieve cleaning of the entire test piece. A control module controls the wavelength switching unit, the laser beam regulating module, and the transfer platform. Total laser cleaning with improved laser cleaning quality is achieved by using these laser beams with the appropriate wavelengths and energy.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: July 6, 2021
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chun-Ming Chen, Chien-Jung Huang, Yu-Chung Lin, Chieh-Ting Tseng, Min-Kai Lee
  • Publication number: 20200274565
    Abstract: A device includes a baseband circuit that generates a first digital signal, a digital-to-analog converter (DAC) that converts the first digital signal into a baseband signal, a first mixer that generates a first mixed signal based on the baseband signal and a first reference signal, a second mixer that generates a second mixed signal based on the baseband signal and a second reference signal, a third mixer that generates a down-converted signal based on the first mixed signal and the second mixed signal, and an analog-to-digital converter (ADC) that converts the down-converted signal into a second digital signal. The frequency of the first reference signal is different from the frequency of the second reference signal.
    Type: Application
    Filed: December 12, 2019
    Publication date: August 27, 2020
    Inventors: BENG-MENG CHEN, CHIEN-JUNG HUANG, YI-HUA LU
  • Patent number: 10742245
    Abstract: A device includes a baseband circuit that generates a first digital signal, a digital-to-analog converter (DAC) that converts the first digital signal into a baseband signal, a first mixer that generates a first mixed signal based on the baseband signal and a first reference signal, a second mixer that generates a second mixed signal based on the baseband signal and a second reference signal, a third mixer that generates a down-converted signal based on the first mixed signal and the second mixed signal, and an analog-to-digital converter (ADC) that converts the down-converted signal into a second digital signal. The frequency of the first reference signal is different from the frequency of the second reference signal.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: August 11, 2020
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Beng-Meng Chen, Chien-Jung Huang, Yi-Hua Lu
  • Publication number: 20200147729
    Abstract: A cutting method for forming a chamfered corner includes a step of selecting a light pattern-adjusting module according to a pre-cut chamfer angle, a step of the light pattern-adjusting module emitting a laser beam to a substrate and thus forming a modified region extending in a thickness direction at the substrate, a step of the light pattern-adjusting module adjusting an axial energy distribution of a light pattern of the laser beam to vary an appearance of the modified region so as to form the modified region fulfilling the pre-cut chamfer angle, and a step of etching the substrate having the modified region to form a chamfered surface on the substrate by cutting the modified region from the substrate.
    Type: Application
    Filed: February 19, 2019
    Publication date: May 14, 2020
    Inventors: HSIN-YU CHANG, FU-LUNG CHOU, CHIEN-JUNG HUANG, YU-CHUNG LIN, MIN-KAI LEE
  • Publication number: 20190314871
    Abstract: A laser cleaning apparatus and a laser cleaning method are furnished, for switching the wavelengths of laser beams furnished by a single laser module using a wavelength switching module and cleaning a test piece using the laser beams having wavelengths and energy suitable for manufacturing needs. The laser cleaning method includes: creating a laser beam; switching the wavelength output by the laser based on process requirements; propagating the laser beam via an optical path propagating module for laser cleaning the test piece; and removing debris. A transfer platform allows movements of the laser beams with respect to the test piece to achieve cleaning of the entire test piece. A control module controls the wavelength switching unit, the laser beam regulating module, and the transfer platform. Total laser cleaning with improved laser cleaning quality is achieved by using these laser beams with the appropriate wavelengths and energy.
    Type: Application
    Filed: September 17, 2018
    Publication date: October 17, 2019
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chun-Ming CHEN, Chien-Jung HUANG, Yu-Chung LIN, Chieh-Ting TSENG, Min-Kai LEE
  • Patent number: 10326151
    Abstract: A modular structure of a fuel cell is provided, which includes a membrane electrode assembly (MEA), at least one first electrode plate, at least one second electrode plate, at least one first fixing element and at least one second fixing element. The first electrode plate is disposed at one side of the MEA and has at least one first through hole. The second electrode plate is disposed at the other side of the MEA and has at least one second through hole corresponding to the first through hole. The first fixing element and the second fixing element correspond to each other, and are joined to each other through the first through hole and the second through hole to fix the first electrode plate and the second electrode plate for the first electrode plate, the MEA and the second electrode plate to form a single cell module.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: June 18, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chun-Han Li, Chih-Wei Chien, Chien-Jung Huang
  • Patent number: 10081077
    Abstract: This disclosure provides a device for heating to generate a uniform molten pool, including: a source unit for generating an energy beam; a beam expanding/reducing unit positioned in an energy path of the energy beam for adjusting the diameter of the energy beam; a flat-top conical lens set positioned in the energy path and including at least two flat-top axicons, with the beam expanding/reducing unit positioned between the source unit and the flat-top conical lens set; and a focusing lens positioned in the energy path, with the flat-top conical lens set between the beam expanding/reducing unit and the focusing lens, and the energy beam being focused by the focusing lens. This disclosure generates a uniform molten pool to prevent vaporization splash due to overheating of the material during melting.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: September 25, 2018
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Kuang-Yao Huang, Chien-Jung Huang, Kuo-Tso Chen, Chun-Jen Gu
  • Patent number: 10084299
    Abstract: A socket cover for covering a seat of a socket includes a body covering on the seat; the body having two recesses and two openings; the openings are positioned corresponding to the two electrical connecting portions so as to expose the two electrical connecting portions; two protecting sheets on the body; the each protecting sheet being movable along a first moving path and between an open position and a close position; a direction of the first moving path being parallel to axes of the two protecting sheets; and wherein when the protecting sheet is positioned in the recess, it is at the open position; and when the protecting sheet moves to the close position, it will cover a respective one of the two electrical connecting portions. The recesses and the protecting sheets are arranged on an outer side of the body or an inner side of the body.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: September 25, 2018
    Inventor: Chien-Jung Huang
  • Publication number: 20180123147
    Abstract: A modular structure of a fuel cell is provided, which includes a membrane electrode assembly (MEA), at least one first electrode plate, at least one second electrode plate, at least one first fixing element and at least one second fixing element. The first electrode plate is disposed at one side of the MEA and has at least one first through hole. The second electrode plate is disposed at the other side of the MEA and has at least one second through hole corresponding to the first through hole. The first fixing element and the second fixing element correspond to each other, and are joined to each other through the first through hole and the second through hole to fix the first electrode plate and the second electrode plate for the first electrode plate, the MEA and the second electrode plate to form a single cell module.
    Type: Application
    Filed: December 12, 2016
    Publication date: May 3, 2018
    Inventors: Chun-Han Li, Chih-Wei Chien, Chien-Jung Huang
  • Publication number: 20170151630
    Abstract: This disclosure provides a device for heating to generate a uniform molten pool, including: a source unit for generating an energy beam; a beam expanding/reducing unit positioned in an energy path of the energy beam for adjusting the diameter of the energy beam; a flat-top conical lens set positioned in the energy path and including at least two flat-top axicons, with the beam expanding/reducing unit positioned between the source unit and the flat-top conical lens set; and a focusing lens positioned in the energy path, with the flat-top conical lens set between the beam expanding/reducing unit and the focusing lens, and the energy beam being focused by the focusing lens. This disclosure generates a uniform molten pool to prevent vaporization splash due to overheating of the material during melting.
    Type: Application
    Filed: December 28, 2015
    Publication date: June 1, 2017
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Kuang-Yao HUANG, Chien-Jung HUANG, Kuo-Tso CHEN, Chun-Jen GU
  • Patent number: 9557831
    Abstract: An optical navigation method includes: detecting inertia of an image of a feature point; and determining an effective sensing region of an image sensing array according to the detected inertia for reducing power consumption. Besides, an optical navigation apparatus includes a detecting circuit and a determining unit. The detecting circuit is arranged for detecting a moving inertia of a feature point. The determining circuit is coupled to the detecting circuit, and arranged for determining an effective sensing region of an image sensing array according to the detected moving inertia for reducing power consumption.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: January 31, 2017
    Assignee: PixArt Imaging Inc.
    Inventors: Ching-Chih Chen, Ming-Tsan Kao, Chih-Yen Wu, Chien-Jung Huang, Yao-Hsuan Lin, Tzu-Yu Chen
  • Patent number: 9408300
    Abstract: According to embodiments of the disclosure, a flexible device and a fabrication method thereof are provided. The flexible device has a first area and a second area, and the stiffness of a portion of the first area is greater than the stiffness of the second area. The flexible device may include a flexible substrate and a rigid element. The flexible substrate includes a first surface and a second surface opposite to each other. The second surface has a coarse structure. The surface roughness of the second surface is greater in the first area than in the second area. The rigid element is disposed on the first surface of the flexible substrate and located in the first area. The stiffness of the rigid element is greater than the stiffness of the flexible substrate. A projection area of the coarse structure on the flexible substrate overlaps an area of the rigid element.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: August 2, 2016
    Assignee: Industrial Technology Research Institute
    Inventors: Cheng-Che Wu, Chen-Chu Tsai, Chien-Jung Huang, Yung-Hui Yeh, Heng-Yin Chen
  • Publication number: 20160189822
    Abstract: A method for preparing a conductive film includes: (a) providing a mixture that includes a conductive material and a solvent, the conductive material including polyethylenedioxythiophene and polystyrene sulfonate; (b) filtering the mixture to obtain a filtrate; (c) heating and stirring the filtrate to form a film-forming solution; (d) coating the film-forming solution onto a substrate to form a crude film on the substrate; and (e) bringing the crude film into contact with methanesulfonic acid so as to form the conductive film on the substrate.
    Type: Application
    Filed: August 4, 2015
    Publication date: June 30, 2016
    Inventors: Chien-Jung Huang, Ching-Nan Chen, Teen-Hang Meen, Yu-Hao Chen
  • Publication number: 20160174358
    Abstract: According to embodiments of the disclosure, a flexible device and a fabrication method thereof are provided. The flexible device has a first area and a second area, and the stiffness of a portion of the first area is greater than the stiffness of the second area. The flexible device may include a flexible substrate and a rigid element. The flexible substrate includes a first surface and a second surface opposite to each other. The second surface has a coarse structure. The surface roughness of the second surface is greater in the first area than in the second area. The rigid element is disposed on the first surface of the flexible substrate and located in the first area. The stiffness of the rigid element is greater than the stiffness of the flexible substrate. A projection area of the coarse structure on the flexible substrate overlaps an area of the rigid element.
    Type: Application
    Filed: February 12, 2015
    Publication date: June 16, 2016
    Inventors: Cheng-Che Wu, Chen-Chu Tsai, Chien-Jung Huang, Yung-Hui Yeh, Heng-Yin Chen
  • Patent number: 9360949
    Abstract: There is provided a human interface device including a control chip and a plurality of control components. The control chip includes a voltage detection circuit coupled to the plurality of control components via a multiplexing pin and detects a voltage value on the multiplexing pin through the voltage detection circuit thereby identifying an operating state of the plurality of control components.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: June 7, 2016
    Assignee: PIXART IMAGING INC
    Inventors: Yu Han Chen, Chia Cheun Liang, Hsiang Sheng Liu, Chih Yen Wu, Chien Jung Huang, Chih Chung Tsai, Ming Tsan Kao
  • Patent number: 9213444
    Abstract: A touch device including a light guide unit, a light emitting unit, an invisible light filter and an invisible light detector is provided. The light guide unit has at least one light incident surface and a first surface connected to the light incident surface. The light emitting unit is disposed beside the light incident surface and is capable of emitting an invisible light beam. The invisible light filter is contacted tightly with the first surface. The light guide unit is disposed between the invisible light filter and the invisible light detector. Moreover, a touch projection system including the touch device is also provided.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: December 15, 2015
    Assignee: Young Optics Inc.
    Inventors: Hung-Chih Chou, Yung-Hsing Chen, Chien-Jung Huang, Chih-Hsien Tsai, Wei-Szu Lin