Patents by Inventor Shih-Min Chen

Shih-Min 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).

  • Patent number: 11979738
    Abstract: A method of wireless communication locator station to be disposed at specific location includes: detecting rotation angle information of client-based portable device, carried or worn by user, according to specific wireless communication standard between wireless communication locator station and client-based portable device when client-based portable device is within signal range of wireless communication locator station; generating head pose direction estimation according to calculated rotation angle information; and when head pose direction estimation indicates that a user turns face towards wireless communication locator station, sending packet signal from wireless communication locator station to server-based portable device, successfully paired with and security-connected with client-based portable device, so that server-based portable device can transfer packet signal to client-based portable device after receiving packet signal.
    Type: Grant
    Filed: March 29, 2023
    Date of Patent: May 7, 2024
    Assignee: PixArt Imaging Inc.
    Inventors: Shih-Feng Chen, Yen-Min Chang
  • Publication number: 20240146205
    Abstract: A flyback power converter includes a power transformer, a first lossless voltage conversion circuit, a first low-dropout linear regulator and a secondary side power supply circuit. The first low-dropout linear regulator (LDO) generates a first operation voltage as power supply for being supplied to a sub-operation circuit. The secondary side power supply circuit includes a second lossless voltage conversion circuit and a second LDO. The second LDO generates a second operation voltage. The first operation voltage and the second operation voltage are shunted to a common node. When a first lossless conversion voltage is greater than a first threshold voltage, the second LDO is enabled to generate the second operation voltage to replace the first operation voltage as power supply supplied to the sub-operation circuit; wherein the second lossless conversion voltage is lower than the first lossless switching voltage.
    Type: Application
    Filed: September 23, 2023
    Publication date: May 2, 2024
    Inventors: Shin-Li Lin, He-Yi Shu, Shih-Jen Yang, Ta-Yung Yang, Yi-Min Shiu, Chih-Ching Lee, Yu-Chieh Hsieh, Chao-Chi Chen
  • Publication number: 20240128324
    Abstract: A field effect transistor includes a substrate having a transistor forming region thereon; an insulating layer on the substrate; a first graphene layer on the insulating layer within the transistor forming region; an etch stop layer on the first graphene layer within the transistor forming region; a first inter-layer dielectric layer on the etch stop layer; a gate trench recessed into the first inter-layer dielectric layer and the etch stop layer within the transistor forming region; a second graphene layer on interior surface of the gate trench; a gate dielectric layer on the second graphene layer and on the first inter-layer dielectric layer; and a gate electrode on the gate dielectric layer within the gate trench.
    Type: Application
    Filed: November 21, 2022
    Publication date: April 18, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Kuo-Chih Lai, Shih-Min Chou, Nien-Ting Ho, Wei-Ming Hsiao, Li-Han Chen, Szu-Yao Yu, Chung-Yi Chiu
  • Publication number: 20240072695
    Abstract: A motor forward and reverse rotation detector and a motor driver having the motor forward and reverse rotation detector are provided. A rotor position detecting circuit detects a position of a rotor of a motor to output a commutation signal. A forward and reverse rotation detecting circuit detects a back electromotive force of the motor to output a back electromotive force detected signal. The forward and reverse rotation detecting circuit, according to a phase relationship and a phase difference between the back electromotive force detected signal and the commutation signal, determines which one of a forward direction and a reverse direction is a rotational direction of the motor to output a rotational direction detected signal. A motor driving circuit drives the motor according to the rotational direction detected signal.
    Type: Application
    Filed: October 24, 2022
    Publication date: February 29, 2024
    Inventors: KUN-MIN CHEN, Shih-Hai Chien
  • Patent number: 11916126
    Abstract: A semiconductor device includes a substrate and a gate structure. The gate structure is disposed on the substrate, and the gate structure includes a titanium nitride barrier layer a titanium aluminide layer, and a middle layer. The titanium aluminide layer is disposed on the titanium nitride barrier layer, and the middle layer is disposed between the titanium aluminide layer and the titanium nitride barrier layer. The middle layer is directly connected with the titanium aluminide layer and the titanium nitride barrier layer, and the middle layer includes titanium and nitrogen. A concentration of nitrogen in the middle layer is gradually decreased in a vertical direction towards an interface between the middle layer and the titanium aluminide layer.
    Type: Grant
    Filed: November 18, 2022
    Date of Patent: February 27, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Hui-Hsin Hsu, Huan-Chi Ma, Chien-Wen Yu, Shih-Min Chou, Nien-Ting Ho, Ti-Bin Chen
  • Patent number: 11477873
    Abstract: A switch control system for a motor and a lamp of a fan includes a motor switch, a lamp switch, a detection unit, a wireless remote control receiving unit, a control unit, and a drive unit. The control unit is electrically connected to the motor switch through a motor power processing part. The control unit is electrically connected to the lamp switch through a lamp power processing part. Thus, the motor switch and the wireless remote control receiving unit are able to operate and control the motor independently, and the lamp switch and the wireless remote control receiving unit are able to operate and control the lamp independently.
    Type: Grant
    Filed: November 10, 2021
    Date of Patent: October 18, 2022
    Assignee: AIR COOL INDUSTRIAL CO., LTD.
    Inventor: Shih-Min Chen
  • Publication number: 20180140566
    Abstract: Provided is an acetaminophen and tramadol compound oral solution having an acetaminophen having a weight percentage of 1.447 wt % to 6.702 wt %, a tramadol having a weight percentage of 0.167 wt % to 0.773 wt %, and a solvent system, weighted 90.828 wt % to 98.02 wt %, having a glycerin, a water and a polyethylene glycol, wherein the polyethylene glycol has a weight percentage of 17 wt % to 65 wt % of the total weight of the acetaminophen and tramadol compound oral solution that help ease difficulties for the aged, severe or dysphagia patients.
    Type: Application
    Filed: February 9, 2017
    Publication date: May 24, 2018
    Inventors: Shih-Min CHEN, Chun-Hsun LAI, Ying-Ku LIN, Pao-Shi SHENG
  • Publication number: 20110062892
    Abstract: A driving device for an LED circuit includes a power receiving terminal, a capacitor, and a light adjusting unit. The power receiving terminal is coupled to a switch for receiving a DC power source that supplies for the LED circuit and the driving device via the switch. The capacitor is coupled to the power receiving terminal, and is utilized for storing energy. The light adjusting unit is coupled to the power receiving terminal and the capacitor, and is utilized for generating a control signal according the status of the switch when a voltage on the capacitor decreases and does not decrease below a first threshold voltage, for adjusting light intensity of the LED circuit.
    Type: Application
    Filed: September 16, 2009
    Publication date: March 17, 2011
    Inventors: Jian-Shen Li, Chia-Chieh Hung, Shih-Min Chen, Chun-Liang Lin
  • Publication number: 20090194515
    Abstract: An air jet type laser processing machine for processing a workpiece is disclosed to include a gas supply device, a fluid supply device, a recycling device, an actuator, which has an outer tube attached with the bottom end thereof to the surface of the workpiece and defining therein a first passage for guiding discharged gas from the gas supply device to the workpiece, a second passage (or a number of second passages) for guiding the fluid from the fluid supply device to the workpiece and a third passage connected to the recycling device for enabling the recycling device to recycle the discharged gas and fluid, and a laser emitter adapted for emitting a laser beam through the first passage onto the workpiece. During operation, the laser beam and the fluid work on the workpiece at the same time, and the laser beam is free from the interference of the fluid.
    Type: Application
    Filed: June 11, 2008
    Publication date: August 6, 2009
    Applicant: CONTREL TECHNOLOGY CO., LTD.
    Inventors: Chia-Lung Kuo, Yan-Hua Chen, Shih-Min Chen
  • Publication number: 20090194512
    Abstract: A multi-function machine includes an electrode having a passage, a power supply device electrically connected with the two opposite terminals thereof to the electrode and the workpiece to be processed, a feeder for selectively feeding a gas or fluid to the passage of the electrode, a first laser beam and a second laser beam respectively projected through the passage of the electrode onto the workpiece, and a detection control device for receiving the reflective light wave of the second laser beam reflected by the workpiece.
    Type: Application
    Filed: June 9, 2008
    Publication date: August 6, 2009
    Applicant: CONTREL TECHNOLOGY CO., LTD.
    Inventors: Chia-Lung Kuo, Pei-Lun Huang, Keng-Hui Chu, Shih-Min Chen
  • Patent number: 7173403
    Abstract: A boost DC/DC converter, including a mask circuit, a switched boost circuit, a pulse width modulation (PWM) circuit and an AND gate, is provided. The mask circuit is used to output a mask signal according to a load current. In the present invention, the system can selectively operate in the pulse width modulation mode, the pulse frequency modulation (PFM) mode or the mixed pulse mask mode according to the mask signal corresponding to the load current when the system is under light load, medium load or heavy load respectively, so as to achieve optimal system efficiency.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: February 6, 2007
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Ke-Horng Chen, Chien-Fang Peng, Shih-Min Chen, Ming-Tan Hsu
  • Patent number: 6627219
    Abstract: The present invention provides a oral capsule preparation, comprising a capsule prepared from a drug or the alkaline salt thereof, an oily compound or the alkaline salt thereof, an emulsifier and a polycarbon alcohol, together with an enteric coating disposed on the outer layer of the capsule; wherein said emulsifier is a composition of C6-18 organic fatty acid and an organic amine, or the mixture thereof. The invention also provides a method of preparing the oral capsule preparation of the invention.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: September 30, 2003
    Assignee: Pharmaceutical Industry Technology and Development Center
    Inventors: Wei-Hua Hao, Shih Min Chen
  • Publication number: 20020076435
    Abstract: The present invention provides a oral capsule preparation, comprising a capsule prepared from a drug or the alkaline salt thereof, an oily compound or the alkaline salt thereof, an emulsifier and a polycarbon alcohol, together with an enteric coating disposed on the outer layer of the capsule; wherein said emulsifier is a composition of C6-18 organic fatty acid and an organic amine, or the mixture thereof. The invention also provides a method of preparing the oral capsule preparation of the invention.
    Type: Application
    Filed: June 29, 2001
    Publication date: June 20, 2002
    Inventors: Wei-Hua Hao, Shih Min Chen