Patents by Inventor Chang Wu

Chang Wu 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: 20240131808
    Abstract: A tape laying device includes a tape transmission mechanism, a compaction head mechanism, a cutter mechanism, a heating mechanism and a motion mechanism. The tape transmission mechanism is configured to transmit the pre-impregnated tape. The compaction head mechanism, connected with the tape transmission mechanism, is configured to depress and drive the pre-impregnated tape transmitted by the tape transmission mechanism to follow a moving path so as to adhere the pre-impregnated tape onto the mould surface. The cutter mechanism is configured to cut the pre-impregnated tape. The heating mechanism, disposed downstream to the cutter mechanism, is configured to heat the pre-impregnated tape. The motion mechanism is used to have the cutter mechanism having an active path to move toward the moving path while the cutter mechanism cuts the pre-impregnated tape.
    Type: Application
    Filed: December 7, 2022
    Publication date: April 25, 2024
    Inventors: TENG-YEN WANG, SHUN-SHENG KO, MIAO-CHANG WU, TUNG-YING LIN, CHAO-HONG HSU
  • 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
  • Publication number: 20240128876
    Abstract: A switching control circuit for use in controlling a resonant flyback power converter generates a first driving signal and a second driving signal. The first driving signal is configured to turn on the first transistor to generate a first current to magnetize a transformer and charge a resonant capacitor. The transformer and charge a resonant capacitor are connected in series. The second driving signal is configured to turn on the second transistor to generate a second current to discharge the resonant capacitor. During a power-on period of the resonant flyback power converter, the second driving signal includes a plurality of short-pulses configured to turn on the second transistor for discharging the resonant capacitor. A pulse-width of the short-pulses of the second driving signal is short to an extent that the second current does not exceed a current limit threshold.
    Type: Application
    Filed: June 15, 2023
    Publication date: April 18, 2024
    Inventors: Yu-Chang Chen, Ta-Yung Yang, Kun-Yu Lin, Fu-Ciao Syu, Chia-Hsien Yang, Hsin-Yi Wu
  • Publication number: 20240120355
    Abstract: Implementations of a cover for an image sensor may include an optically transmissive portion and a black mask layer applied as a strip adjacent a perimeter of a largest planar surface of the optically transmissive portion. The first edge of the strip closest to the perimeter may be separated from the perimeter by a predetermined distance.
    Type: Application
    Filed: September 25, 2023
    Publication date: April 11, 2024
    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Gregg BARDEL, Shih-Chang TAI, Shunsuke YASUDA, Weng-Jin WU
  • Publication number: 20240120845
    Abstract: A resonant flyback power converter includes: a first transistor and a second transistor which are configured to switch a transformer and a resonant capacitor for generating an output voltage; and a switching control circuit generating first and second driving signals for controlling the first and the second transistors. The turn-on of the first driving signal magnetizes the transformer. The second driving signal includes a resonant pulse having a resonant pulse width and a ZVS pulse during the DCM operation. The resonant pulse is configured to demagnetize the transformer. The resonant pulse has a first minimum resonant period for a first level of the output load and a second minimum resonant period for a second level of the output load. The first level is higher than the second level and the second minimum resonant period is shorter than the first minimum resonant period.
    Type: Application
    Filed: April 14, 2023
    Publication date: April 11, 2024
    Inventors: Yu-Chang Chen, Ta-Yung Yang, Kun-Yu Lin, Hsin-Yi Wu
  • Publication number: 20240120844
    Abstract: A resonant flyback power converter includes: a first and a second transistors which form a half-bridge circuit for switching a transformer and a resonant capacitor to generate an output voltage; a current-sense device for sensing a switching current of the half-bridge circuit to generate a current-sense signal; and a switching control circuit generating a first and a second driving signals for controlling the first and the second transistors. The turn-on of the first driving signal controls the half-bridge circuit to generate a positive current to magnetize the transformer and charge the resonant capacitor. The turn-on of the second driving signal controls the half-bridge circuit to generate a negative current to discharge the resonant capacitor. The switching control circuit turns off the first transistor when the positive current exceeds a positive-over-current threshold, and/or, turns off the second transistor when the negative current exceeds a negative-over-current threshold.
    Type: Application
    Filed: April 10, 2023
    Publication date: April 11, 2024
    Inventors: Kun-Yu LIN, Ta-Yung YANG, Yu-Chang CHEN, Hsin-Yi WU, Fu-Ciao SYU, Chia-Hsien YANG
  • Publication number: 20240120846
    Abstract: A resonant flyback power converter includes: a first transistor and a second transistor which are configured to switch a transformer and a resonant capacitor for generating an output voltage; and a switching control circuit generating first and second driving signals for controlling the first and the second transistors. The turn-on of the first driving signal magnetizes the transformer. During a DCM (discontinuous conduction mode) operation, the second driving signal includes a resonant pulse for demagnetizing the transformer and a ZVS (zero voltage switching) pulse for achieving ZVS of the first transistor. The resonant pulse is skipped when the output voltage is lower than a low-voltage threshold.
    Type: Application
    Filed: April 14, 2023
    Publication date: April 11, 2024
    Inventors: Yu-Chang Chen, Ta-Yung Yang, Kun-Yu Lin, Hsin-Yi Wu
  • Publication number: 20240111661
    Abstract: An embodiment of this application provides a method and apparatus for testing control software, and a computer-readable storage medium to reduce the time consumed in the simulation-based debugging and enhance efficiency. The method may include obtaining test information of a plurality of fault signals; and injecting, based on the test information of the plurality of fault signals, the plurality of fault signals into a simulation environment in sequence to obtain test results of the plurality of fault signals handled by the control software, where the simulation environment may be a simulation environment of a control object of the control software.
    Type: Application
    Filed: August 14, 2023
    Publication date: April 4, 2024
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Bin LAN, Xuming WANG, Deqiang SHI, Chunguang YE, Runqi WU, Jianfeng GUO, Chang LIU, Dongfei ZHANG, Jianping BAI, Lang YANG, Xuan HE
  • Publication number: 20240111121
    Abstract: An imaging lens module includes a plastic lens barrel, a first optical element assembly and a second optical element assembly, wherein both of the first optical element assembly and the second optical element assembly are disposed in the plastic lens barrel. The plastic lens barrel includes a first inner annular surface and a second inner annular surface. The first inner annular surface forms a first receiving space. The second inner annular surface forms a second receiving space. The first optical element assembly is disposed in the first receiving space and includes a plurality of optical lens elements and a first retainer. The second optical element assembly is disposed in the second receiving space and includes a first light blocking sheet and a second retainer.
    Type: Application
    Filed: December 13, 2023
    Publication date: April 4, 2024
    Inventors: Chien-Hsun WU, Lin-An CHANG, Ming-Ta CHOU
  • Patent number: 11950200
    Abstract: A method of wireless communication by a positioning entity includes determining an accuracy of a positioning estimate of a first non-anchor sidelink user equipment (UE). The method also includes determining the accuracy satisfies an accuracy condition. The method further includes configuring the first non-anchor sidelink UE as a first anchor UE based on the positioning estimate satisfying the accuracy condition.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: April 2, 2024
    Assignee: QUALCOMM INCORPORATED
    Inventors: Chang-Sik Choi, Kapil Gulati, Shuanshuan Wu
  • Patent number: 11945383
    Abstract: A control system of a travelling system includes a directional controller, a first sensor, a second sensor, an image-capturing module and a preprocessor. The first sensor is disposed on a reference position. The second sensor and the image-capturing module are disposed on the directional controller. The preprocessor compares a first directional data from the first sensor and a second directional data from the second sensor to obtain a difference value, and provides a photographing parameter to the image-capturing module.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: April 2, 2024
    Assignee: ABILITY ENTERPRISE CO., LTD.
    Inventor: Cheng-Chang Wu
  • Patent number: 11948998
    Abstract: A method includes forming a semiconductor substrate having an oxide layer embedded therein, forming a multi-layer (ML) stack including alternating channel layers and non-channel layers over the semiconductor substrate, forming a dummy gate stack over the ML, forming an S/D recess in the ML to expose the oxide layer, forming an epitaxial S/D feature in the S/D recess, removing the non-channel layers from the ML to form openings between the channel layers, where the openings are formed adjacent to the epitaxial S/D feature, and forming a high-k metal gate stack (HKMG) in the openings between the channel layers and in place of the dummy gate stack.
    Type: Grant
    Filed: July 28, 2022
    Date of Patent: April 2, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Xusheng Wu, Chang-Miao Liu, Huiling Shang
  • Patent number: 11949376
    Abstract: A VCO (voltage-controlled oscillator) includes: a resonant tank having a parallel connection of an inductor, a fixed capacitor, a variable capacitor, a first temperature compensating capacitor, and a second temperature compensating capacitor across a first node and a second node, and configured to establish an oscillation of a first oscillatory voltage at the first node and a second oscillatory voltage at the second node; and a regenerative network placed across the first node and the second node to provide energy to sustain the oscillation. The variable capacitor is controlled by a control voltage, the first temperature compensating capacitor is controlled by a first temperature tracking voltage of a positive temperature coefficient, and the second temperature compensating capacitor is controlled by a second temperature tracking voltage of a negative temperature coefficient.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: April 2, 2024
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: I-Chang Wu, Chia-Liang (Leon) Lin
  • Publication number: 20240101784
    Abstract: A novel additive for recycling thermoset materials, its related recyclable thermoset composition and its application are disclosed. Specifically, the composition of the additive comprises at least one copolymer that has at least one carbamate group, at least one carbonate group and/or at least one urea group, and a number-average molecular weight of the copolymer is between 100 and 50,000 Da.
    Type: Application
    Filed: September 5, 2023
    Publication date: March 28, 2024
    Inventors: Chien-Hsin Wu, Ying-Chi Huang, Ying-Feng Lin, Wen-Chang Chen, Ho-Ching Huang, Ru-Jong Jeng
  • Patent number: 11939664
    Abstract: A semiconductor process system includes a process chamber. The process chamber includes a wafer support configured to support a wafer. The system includes a bell jar configured to be positioned over the wafer during a semiconductor process. The interior surface of the bell jar is coated with a rough coating. The rough coating can include zirconium.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: March 26, 2024
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Meng-Chun Hsieh, Tsung-Yu Tsai, Hsing-Yuan Huang, Chih-Chang Wu, Szu-Hua Wu, Chin-Szu Lee
  • Publication number: 20240092318
    Abstract: An end cover assembly, an air cylinder, a tread sweeper and a railway vehicle.
    Type: Application
    Filed: October 9, 2020
    Publication date: March 21, 2024
    Inventors: Qingbing GOU, Anxu WU, Chang FENG, Yuchen ZHANG, Bo WU, Hao XU, Zichen WANG, Xun CHEN, Dongdong WANG, Meng WAN
  • Publication number: 20240096971
    Abstract: A method including providing a device including a gate structure and a source/drain feature adjacent to the gate structure. An insulating layer (e.g., CESL, ILD) is formed over the source/drain feature. A trench is etched in the insulating layer to expose a surface of the source/drain feature. A semiconductor material is then formed in the etched trench on the surface of the source/drain feature. The semiconductor material is converted to a silicide.
    Type: Application
    Filed: November 28, 2023
    Publication date: March 21, 2024
    Inventors: Xusheng WU, Chang-Miao LIU, Ying-Keung LEUNG, Huiling SHANG, Youbo LIN
  • Publication number: 20240097520
    Abstract: An axial flux motor includes a rotor assembly and a stator assembly. The rotor assembly has magnets. The stator assembly has a circuit substrate, segmented iron cores, and a coil. The circuit substrate extends radially. The segmented iron cores are supported on the circuit substrate to be opposite to the magnet in the axial direction. Segmented iron cores arranged in the circumferential direction. A coil is sleeved on a segmented iron core. Holding seats of an insulating material correspond respectively to the segmented iron cores. A holding seat abuts with and covers a segmented iron core from both axial sides and the circumferential direction, and is used for winding the coil. The circuit substrate has slot holes. A slot hole is used for embedding and positioning a portion of a holding seat that protrudes more towards one axial side than the coil.
    Type: Application
    Filed: August 28, 2023
    Publication date: March 21, 2024
    Inventors: Keng-Chang WU, Guo-Jhih YAN, Hsiu-Ying LIN, Kuo-Min WANG
  • Publication number: 20240097005
    Abstract: Disclosed is a semiconductor device and semiconductor fabrication method. A semiconductor device includes: a gate structure over a semiconductor substrate, having a high-k dielectric layer, a p-type work function layer, an n-type work function layer, a dielectric anti-reaction layer, and a glue layer; and a continuous metal cap over the gate structure formed by metal material being deposited over the gate structure, a portion of the anti-reaction layer being selectively removed, and additional metal material being deposited over the gate structure. A semiconductor fabrication method includes: receiving a gate structure; flattening the top layer of the gate structure; precleaning and pretreating the surface of the gate structure; depositing metal material over the gate structure to form a discontinuous metal cap; selectively removing a portion of the anti-reaction layer; depositing additional metal material over the gate structure to create a continuous metal cap; and containing growth of the metal cap.
    Type: Application
    Filed: January 12, 2023
    Publication date: March 21, 2024
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Shih-Hang Chiu, Jui-Yang Wu, Kuan-Ting Liu, Weng Chang
  • Publication number: 20240095360
    Abstract: Disclosed are a RISC-V and O-CFI mechanism-based defense method and apparatus for code reuse attacks, comprising: constructing a control flow graph according to program source codes randomized in a basic block order; on the basis of the control flow graph, obtaining a boundary range of a control flow transfer branch; executing the program source codes, obtaining a target node to which each control flow is to be transferred, and analyzing each target node in combination with the boundary range so as to defend against an abnormal control flow. The present invention can identify an illegal control flow transfer with the assistance of RISC-V security hardware according to the characteristics of a program control flow itself, and effectively handle code reuse attacks, thereby enhancing the security defense capabilities of an RISC-V system.
    Type: Application
    Filed: December 3, 2021
    Publication date: March 21, 2024
    Inventors: Yanjun WU, Chang LIU, Chen ZHAO, Jingzheng WU, Zhiqing RUI, Bin WU, Tianyue LUO