Patents by Inventor PO CHANG

PO 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).

  • Publication number: 20240152034
    Abstract: An optical element driving mechanism is provided, which includes a movable portion, a fixed portion and a driving assembly. The movable portion is connected with an optical element. The movable portion is movable relative to the fixed portion. The driving assembly is configured to drive the movable portion to move relative to the fixed portion.
    Type: Application
    Filed: November 3, 2023
    Publication date: May 9, 2024
    Inventors: Chen-Hung CHAO, Po-Xiang ZHUANG, Chao-Chang HU, Yi-Ho CHEN
  • Publication number: 20240152035
    Abstract: An optical system is provided, including a fixed part, a movable part, and a driving assembly. The fixed part has an opening. A light passes through the opening. The movable part is movable relative to the fixed part and connected to a first optical element. The driving assembly drives the movable part to move relative to the fixed part. The first optical element at least partially overlaps the opening when the movable part is in a first position. The first optical element further includes a first optical element surface, and the first optical element surface faces the light.
    Type: Application
    Filed: November 3, 2023
    Publication date: May 9, 2024
    Inventors: Chen-Hung CHAO, Po-Xiang ZHUANG, Chao-Chang HU, Yi-Ho CHEN, Wei-Jhe SHEN
  • Publication number: 20240152033
    Abstract: An optical system is provided, including a movable part, a fixed part, and a driving assembly. The movable part is connected to a first optical element. The movable part is movable relative to the fixed part. The fixed part has a fixed part opening, wherein a light passes through the fixed part opening. The driving assembly drives the movable part to move relative to the fixed part. The first optical element at least partially overlaps the fixed part opening when the movable part is in a first position. When the movable part is in an extreme position, the first optical element does not overlap the fixed part opening.
    Type: Application
    Filed: November 3, 2023
    Publication date: May 9, 2024
    Inventors: Chen-Hung CHAO, Po-Xiang ZHUANG, Chao-Chang HU, Yi-Ho CHEN, Wei-Jhe SHEN
  • Publication number: 20240154021
    Abstract: A p-GaN high-electron-mobility transistor (HEMT) includes a buffer layer stacked on a substrate, a channel layer stacked on the buffer layer, a supply layer stacked on the channel layer, a doped layer stacked on the supply layer, and a hydrogen barrier layer covering the supply layer and the doped layer. A source and a drain are electrically connected to the channel layer and the supply layer, respectively. A gate is located on the doped layer. The hydrogen barrier layer is doped with fluorine.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 9, 2024
    Inventors: TING-CHANG CHANG, Wei-Chen Huang, Shih-Kai Lin, Yong-Ci Zhang, Sheng-Yao Chou, Chung-Wei Wu, Po-Hsun Chen
  • Patent number: 11979479
    Abstract: A packet sorting and reassembly circuit module, including a header parser, an information processing circuit, at least one state tracking and reassembly circuit, and an output arbiter, is provided. The header parser is configured to analyze multiple first packet segments to obtain header information corresponding to a first network packet, wherein the first network packet is transmitted based on a transmission control protocol (TCP) communication protocol. The information processing circuit is configured to transmit the first packet segments and sideband information corresponding to the first packet segments to a first state tracking and reassembly circuit among the at least one state tracking and reassembly circuit according to the header information. The first state tracking and reassembly circuit is configured to reassemble and sort the first packet segments according to the sideband information. The output arbiter is configured to output the first packet segments according to a sorting result.
    Type: Grant
    Filed: January 16, 2023
    Date of Patent: May 7, 2024
    Assignees: Chung Yuan Christian University, KGI Securities Co. Ltd.
    Inventors: Yu-Kuen Lai, Chao-Lin Wang, He-Ping Li, Cheng-Han Chuang, Kai-Po Chang
  • Patent number: 11978676
    Abstract: A device includes a first semiconductor fin extending from a substrate, a second semiconductor fin extending from the substrate, a dielectric fin over the substrate, a first isolation region between the first semiconductor fin and the dielectric fin, and a second isolation region between the first semiconductor fin and the second semiconductor fin. The first semiconductor fin is disposed between the second semiconductor fin and the dielectric fin. The first isolation region has a first concentration of an impurity. The second isolation region has a second concentration of the impurity. The second concentration is less than the first concentration. A top surface of the second isolation region is disposed closer to the substrate than a top surface of the first isolation region.
    Type: Grant
    Filed: February 7, 2022
    Date of Patent: May 7, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Szu-Ying Chen, Po-Kang Ho, Sen-Hong Syue, Huicheng Chang, Yee-Chia Yeo
  • Patent number: 11978492
    Abstract: The disclosed system and method reduce on-chip power IR drop caused by large write current, to increase the write IO number or improve write throughput and to suppress write voltage ripple at the start and end of a write operation. The disclosed systems and methods are described in relation to stabilizing the bit line voltage for MRAMs, however, the disclosed systems and methods can be used to stabilize the bit line voltage of any memory configuration that draws large currents during short write pulses or, more generally, to selectively assist a power supply generator in supplying adequate power to a load at times of large power consumption.
    Type: Grant
    Filed: May 5, 2022
    Date of Patent: May 7, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yen-An Chang, Po-Hao Lee, Yi-Chun Shih
  • Publication number: 20240132040
    Abstract: The disclosure provides an anti-lock brake device including an oil pressure tank, a valve, and a movable component. The oil pressure tank has an accommodation space, an oil inlet channel, and an oil outlet channel connected to the accommodation space. The valve is slidably located in the oil inlet channel and for sealing or opening an oil inlet of the oil inlet channel. The movable component is located in the accommodation space and has a connecting channel corresponding to the oil inlet and an oil outlet of the oil outlet channel. When the movable component is slid to a depressurized position, the movable component is moved away from the valve for sealing the oil inlet, a first volume is produced between the connecting channel and the oil inlet, and a second volume, smaller than the first volume, is removed from between the connecting channel and the oil outlet.
    Type: Application
    Filed: December 6, 2023
    Publication date: April 25, 2024
    Inventors: Po-Hsien HUANG, Tzu-Chang WANG
  • Publication number: 20240136864
    Abstract: A wireless power transmission device includes a transmission device and a control device. The control device generates a driving signal to the transmission device in a first soft-start period, so as to drive the transmission device. The control device measures an energy message generated by the transmission device to generate a measurement result in a measurement period, and calculates a signal parameter according to the measurement result. The control device accordingly generates a carrier signal according to the signal parameter obtained by the measurement period in a second soft-start period. In a transmission period, the carrier signal is transmitted to the wireless power-receiving device through the transmission device. The energy message is generated by the transmission device in response to a distance between the transmission device and the wireless power-receiving device.
    Type: Application
    Filed: January 6, 2023
    Publication date: April 25, 2024
    Inventors: Fu-Chi LIN, Po-Chang CHEN, Wen-Ti LO
  • Publication number: 20240137431
    Abstract: A packet sorting and reassembly circuit module, including a header parser, an information processing circuit, at least one state tracking and reassembly circuit, and an output arbiter, is provided. The header parser is configured to analyze multiple first packet segments to obtain header information corresponding to a first network packet, wherein the first network packet is transmitted based on a transmission control protocol (TCP) communication protocol. The information processing circuit is configured to transmit the first packet segments and sideband information corresponding to the first packet segments to a first state tracking and reassembly circuit among the at least one state tracking and reassembly circuit according to the header information. The first state tracking and reassembly circuit is configured to reassemble and sort the first packet segments according to the sideband information. The output arbiter is configured to output the first packet segments according to a sorting result.
    Type: Application
    Filed: January 16, 2023
    Publication date: April 25, 2024
    Applicants: Chung Yuan Christian University, KGI Securities Co. Ltd.
    Inventors: Yu-Kuen Lai, Chao-Lin Wang, He-Ping Li, Cheng-Han Chuang, Kai-Po Chang
  • Publication number: 20240132330
    Abstract: Motor control architecture including a travel, a hoist, and a controller is disclosed. The travel disposed on a main rail having an auxiliary-encoder includes a master-driver and a slave-driver for driving two motors. Each motor has a main-encoder. The hoist drives a rope and calculates a rope length continuously. The controller calculates an anti-sway position command based on the rope-length and a position command. The two drivers perform a full closed-loop computation based on a feedback of one main-encoder, a feedback of the auxiliary-encoder, and the anti-sway position command. Wherein, the master-driver controls one motor based on a speed command generated by the full closed-loop computation and the slave-driver follows the speed command and a torque command of the master-driver to drive another motor; or the two drivers compensate the torque command based on an error value between the feedback of one main-encoder and the feedback of the auxiliary-encoder.
    Type: Application
    Filed: October 18, 2023
    Publication date: April 25, 2024
    Inventors: Huan-Chang CHEN, Po-Jen KO, Chun-Ju WU, Lon-Jay CHENG, Wan-Ping CHEN, Chih-Yuan CHANG
  • Patent number: 11964149
    Abstract: A facial beautifying and care apparatus includes a beauty bar (1) having an air supply passage (A), a negative pressure connecting hole (132), a conductive suction nozzle (15) and a first connection port (134); an EMS generation module (20) inside the beauty bar (1) electrically connected to the first connection port (134); an external negative pressure unit (6) separated from the beauty bar (1) and having a negative pressure driving control module (62) and a second connection port (637); the negative pressure driving control module (62) having an air supply tube assembly (66) with a negative pressure communicating hole (661); a communicating tube (7) communicating with the negative pressure connecting hole (132) and the negative pressure communicating hole (661); a conductive wire (8) connected to the first connecting port (134) and the second connecting port (637). Accordingly, the effects of facial skin firming, cleaning, beautifying and caring are achieved.
    Type: Grant
    Filed: March 20, 2023
    Date of Patent: April 23, 2024
    Assignees: BIBOTING INTERNATIONAL CO., LTD.
    Inventors: Po-Chang Liu, Pei-En Lee
  • Patent number: 11966133
    Abstract: An electronic device is disclosed. The electronic device includes a substrate, a plurality of color filters disposed on the substrate, an optical film disposed on the plurality of color filter, and a defect disposed between the substrate and the optical film. The optical film has a first base, a protective layer on the first base, and a second base between the first base and the protective layer and having a first processed area. In a top view of the electronic device, the first processed area corresponds to the defect and at least partially overlaps at least two color filters.
    Type: Grant
    Filed: May 18, 2023
    Date of Patent: April 23, 2024
    Assignee: INNOLUX CORPORATION
    Inventors: Tai-Chi Pan, Chin-Lung Ting, I-Chang Liang, Chih-Chiang Chang Chien, Po-Wen Lin, Kuang-Ming Fan, Sheng-Nan Chen
  • Publication number: 20240117862
    Abstract: An actuating device includes an actuator and a stationary portion. The actuator has at least one driving portion. The stationary portion is provided at an arbitrary position along the actuator such that the driving portion forms a first driving portion and a second driving portion. The first driving portion and the second driving portion can be provided with the same actuating ability or with different actuating abilities respectively by adjusting the position of the stationary portion.
    Type: Application
    Filed: December 15, 2023
    Publication date: April 11, 2024
    Inventors: Chih CHANG, Po-Yuan LIAO
  • Publication number: 20240121920
    Abstract: A terminal device and a terminal device installation method are provided. The terminal device includes a machine body, a detachable cover with two side walls, and at least two coupling mechanisms arranged symmetrically. The machine body includes a front board, a rear board opposite to the front board, and two side boards connected between the front board and the rear board. Each coupling mechanism includes a coupling portion located at one side wall, a front track and a rear track respectively having a front opening and a rear opening opposite to the front opening and both located at one side board. As each coupling portion is coupled to each front track, the cover is assembled with the machine body and covers the front board, and as each coupling portion is coupled with each rear track, the cover is assembled to the machine body and covers the rear board.
    Type: Application
    Filed: October 5, 2023
    Publication date: April 11, 2024
    Inventors: Yuan-Yu CHEN, Ming-Hung HUNG, Po-Chang CHU
  • Patent number: 11946559
    Abstract: A vessel pressure regulating system with a multidirectional control valve device includes: a pressure source; the multidirectional control valve device, which includes a housing, an actuation unit, and a working element, the housing having an interior space, an input port, and an output port, the input port being in communication with the pressure source, the actuation unit having a stationary portion and a driving portion, and the working element being controlled by the driving portion in order to open or close the output port; a vessel in communication with the output port; and a control unit for controlling the operation of the pressure source and of the driving portion. The vessel pressure regulating system enables a safety airbag of a vehicle or a similar device in a chair, bed, or the like to function effectively.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: April 2, 2024
    Assignee: KOGE MICRO TECH CO., LTD.
    Inventors: Chih Chang, Po-Yuan Liao
  • Patent number: 11945885
    Abstract: A vinyl-containing copolymer is copolymerized from (a) first compound, (b) second compound, and (c) third compound. (a) First compound is an aromatic compound having a single vinyl group. (b) Second compound is polybutadiene or polybutadiene-styrene having side vinyl groups. (c) Third compound is an acrylate compound. The vinyl-containing copolymer includes 0.003 mol/g to 0.010 mol/g of benzene ring, 0.0005 mol/g to 0.008 mol/g of vinyl group, and 1.2*10?5 mol/g to 2.4*10?4 mol/g of ester group.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: April 2, 2024
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Cheng-Po Kuo, Shin-Liang Kuo, Shu-Chuan Huang, Yan-Ting Jiang, Jian-Yi Hang, Wen-Sheng Chang
  • Publication number: 20240105400
    Abstract: A computing device can include a housing defining an opening, a base layer, and a button mechanism positioned in the opening. The button mechanism can include a keycap movable relative to the base layer between an undepressed state and a depressed state, and a dome contacting the keycap, the dome including a first surface and a second surface, opposite the first surface. In the undepressed state, the first surface can be concave and the second surface can be convex. In a partially depressed state, a first portion of the first surface can be convex and a second portion of the first surface can be concave. In the depressed state, the first surface can be convex and the second surface can be concave.
    Type: Application
    Filed: September 22, 2022
    Publication date: March 28, 2024
    Inventors: Yu-Po Chang, Chia Chi Wu
  • Patent number: 11938079
    Abstract: A massage stick structure includes a hollow cylinder, a drive control module, and an end cover. The hollow cylinder has a cavity, and a mounting port formed on an end of the hollow cylinder and communicating with the cavity. The drive control module includes a support member, a control assembly and a vibrator fixed to the support member. The end cover is fixed to the support member. The drive control module is disposed into the cavity from the mounting port, and the end cover covers and assembles to the mounting port. Therefore, the assembly process of each component may be simplified to reduce production time and maintenance time.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: March 26, 2024
    Assignee: BIBOTING INTERNATIONAL CO., LTD
    Inventors: Po-Chang Liu, Li-Pin Yuan
  • Patent number: 11941157
    Abstract: A computer implemented method for managing the scope of permissions granted by users to application that includes collecting a set of permissions for an application from an application provider publication; and collecting a process flow for functional steps of the application from a review of the application that is published on a product review type publication. The computer implemented method further includes dividing the functional steps of the application into a plurality of journeys, each of said plurality of journeys having a function associated with a stage of a functional step from a perspective of a user; and matching permissions from the set of permissions for each journey of said plurality of journeys to provide matched permissible permissions to journeys stored in a customer journey store.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: March 26, 2024
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hao Chun Hung, Po-Cheng Chiu, Tsai-Hsuan Hsieh, Cheng-Lun Yang, Chiwen Chang, Shin Yu Wey