Patents by Inventor An-Chi Liu

An-Chi Liu 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: 20230158742
    Abstract: A high-speed additive manufacturing apparatus includes a main body, a sintering module, a product carrying member, a raw material carrying member, and a raw material wiper. The main body includes a printing tank and a raw material tank adjacent to the printing tank. The sintering module is arranged on the main body. The sintering module includes a plurality of sintering light source assemblies. Each of the sintered light source assemblies has a light beam emitting end. The light beam emitting end emits a sintering light beam. The light beam emitting ends of the sintering light source assemblies are arranged in a plurality of rows. Each light beam emitting end in one row is unaligned with the light beam emitting end in adjacent rows along a direction in which the light beam emitting end moves.
    Type: Application
    Filed: June 29, 2022
    Publication date: May 25, 2023
    Inventors: Jeng-Ywan Jeng, Chih-Hua Hsieh, Hou-Ching Lee, Yi-Chia Chen, Shaou-Chi Liu, Tzu-Yu Hsieh, Zhi-Kai Huang
  • Publication number: 20230157610
    Abstract: Multiple circuits in a computing device can share one or more conductive elements. The use of the conductive element can vary by circuit, such as an antenna radiator for a radio frequency (RF) circuit or an electrode for an electrocardiography (ECG) circuit. The circuitry sharing a conductive element can utilize signals obtained over different frequency ranges. Those ranges can be used to select decoupling circuitry, or elements, that can enable the respective circuits to obtain signals over a respective frequency range, excluding signals over one or more other frequency ranges corresponding to other circuitry sharing the circuit. Such an approach allows for concurrent independent operation of the circuitry sharing a conductive element.
    Type: Application
    Filed: November 21, 2022
    Publication date: May 25, 2023
    Inventors: Faton Tefiku, Yonghua Wei, Kevin Li, Man-Chi Liu, Lindsey Michelle Sunden, Peter W. Richards, Dennis Jacob McCray, Christos Kinezos Ioannou, Kyung Nim Noh
  • Patent number: 11646654
    Abstract: A resonant switching power converter includes: capacitors; switches; at least one charging inductor; at least one discharging inductor; a controller generating a charging operation signal corresponding to charging process and discharging operation signals corresponding to discharging processes, to operate the switches to switch electrical connection relationships of the capacitors. In the charging process, the controller controls the switches via the charging operation signal, so that a series connection of the capacitors and the charging inductor is formed between the input voltage and the output voltage, which forms a charging path. In the discharging processes, the controller controls the switches via the discharging operation signals, so that a series connection of one of the capacitors and the discharging inductor is formed between the output voltage and a ground voltage level, to form plural discharging paths at different periods in a sequential order.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: May 9, 2023
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Kuo-Chi Liu, Ta-Yung Yang, Chung-Lung Pai
  • Patent number: 11642077
    Abstract: Sleep tracking systems and techniques for monitoring two or more co-sleepers in a single bed are disclosed. Such systems and techniques may incorporate sleeper identification, as well as various non-user-specific aspects. Some implementations may incorporate user-specific or user-tailored alarm functionality.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 9, 2023
    Assignee: FITBIT, INC.
    Inventors: Juan Ignacio Correa Ramírez, Conor Joseph Heneghan, Lindsey Michelle Sunden, Lin Yang, Lukas Bielskis, Thomas Samuel Elliot, Benjamin B. Perkins, Priya Vijay Sheth, Jose Roberto Melgoza, Nicholas Adrian Myers, Chris H. Sarantos, Andrew Larsen Axley, Jaydip Das, Samuel Barry Tellman, Man-Chi Liu, Jeffrey Andrew Fisher
  • Publication number: 20230122218
    Abstract: Various embodiments provide a wellness tracking device with a base plate that may be utilized as a combination electrode by a variety of sensors. The base plate may be a multi-material electrode that includes a conductor and a transparent or semi-transparent material to enable optical sensing. In certain embodiments, the base plate supports a plurality of different sensors, which may selectively utilize the base plate as an electrode.
    Type: Application
    Filed: August 19, 2022
    Publication date: April 20, 2023
    Inventors: Jens Mitchell NIELSEN, Jaclyn Leverett WASSON, Kyung Nim NOH, Man-Chi LIU, Alan LUU, Peter Colin DESS, Lindsey Michelle SUNDEN, Lukas BIELSKIS, Thomas CONSOLAZIO, Steven Thomas WOODWARD
  • Publication number: 20230106895
    Abstract: There is provided a pixel circuit for performing analog operation including a photodiode, a first temporal circuit, a second temporal circuit and an operation circuit. Within a first interval, the photodiode detects first light energy to be stored in the first temporal circuit. Within a second interval, the photodiode detects second light energy to be stored in the second temporal circuit. Within an operation interval, the first temporal circuit outputs a first detection signal having a first pulse width according to the first light energy and outputs a second detection signal having a second pulse width according to the second light energy for being calculated by the operation circuit.
    Type: Application
    Filed: November 29, 2022
    Publication date: April 6, 2023
    Inventors: REN-CHIEH LIU, CHIH-HUAN WU, YI-HSIEN KO, HAN-CHI LIU
  • Publication number: 20230101677
    Abstract: Provided is a projection device including an illumination system, an optical engine module, a projection lens, at least one first case, at least one second case, and at least one optical element. The at least one first case includes a first flow channel to transmit a first fluid therein. The at least one second case is connected to the at least one first case to form an accommodating space. The at least one optical element is disposed in the accommodating space. Heat generated by the at least one optical element is transferred, by the first fluid, to an outside of the at least one first case.
    Type: Application
    Filed: September 14, 2022
    Publication date: March 30, 2023
    Applicant: Coretronic Corporation
    Inventors: Wei-Chi Liu, Meng-Syuan Dai
  • Patent number: 11614963
    Abstract: A method of operating a shared computing environment includes receiving a client request for an optimized runtime configuration of the shared computing environment for executing a task, receiving runtime data of the task collected from a prior runtime, inferring a runtime configuration from the runtime data, determining a predicted timeseries workload for the shared computing environment, updating the runtime configuration to including the timeseries workload prediction, wherein the updating outputs the optimized runtime configuration, and configuring the shared computing environment according to the optimized runtime configuration in executing the task.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: March 28, 2023
    Assignee: International Business Machines Corporation
    Inventors: Hong Wei Jia, Guang Ming Zhang, Mo Chi Liu, Yun BJ Wang, Wu Yan, Xiaoyang Yang, He Sheng Yang
  • Patent number: 11614359
    Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: March 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Kuan Tang, Yi-Cheng Chiu, Chia-Chi Kuo, Jui-Te Chiu, Han-Chi Liu
  • Patent number: 11609642
    Abstract: A method of an optical sensor apparatus which is to be used with a controlling device arranged for controlling an object having a long shape and flexible form of a material, includes: using a light emitting circuit to generate and output a light ray to a surface of a portion of the object; sensing the light ray reflected from the surface for multiple times to generate multiple images; detecting at least one motion image in the generated multiple images; and, determining a motion, an offset, or a rotation angle of the object, which is controlled by the thread controlling device, according to the detected at least one motion image.
    Type: Grant
    Filed: July 12, 2022
    Date of Patent: March 21, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Feng-Chi Liu, Ching-Lin Chung
  • Patent number: 11600506
    Abstract: A wafer pod transfer assembly includes a wafer pod port to receive a wafer pod, a transfer axle coupled to the wafer pod port, a shaft receiver, a shaft coupled to the transfer axle and to the shaft receiver, a pin through the shaft receiver and through the shaft, wherein the pin comprises a first end and a second end, opposite the first end, and a pin buckle including a first loop and a second loop. The pin buckle is coupled to the pin, the first loop encircles the first end of the pin, and the second loop encircles the second end of the pin.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: March 7, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LIMITED
    Inventors: Chih-Wei Chou, Sheng-Yuan Lin, Yuan-Hsin Chi, Yin-Tun Chou, Hung-Chih Wang, Yu-Chi Liu
  • Patent number: 11601048
    Abstract: A resonant switching power converter includes: capacitors, switches, at least one charging inductor, at least one discharging inductor and a pre-charging circuit. The pre-charging circuit controls a first switch of the switches when the resonant switching power converter operates in a pre-charging mode, to control an electrical connection relationship between the input voltage and a first capacitor of the capacitors and to control other capacitors of the capacitors, thus controlling the capacitors to be connected in parallel to one another or to be connected in series to one another, so that when a voltage drop across the first capacitor is lower than a predetermined voltage, the voltage drop across each capacitor is charged to the predetermined voltage. After operating in the pre-charging mode, the resonant switching power converter subsequently operates in a resonant voltage conversion mode, to thereby convert an input voltage to an output voltage.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: March 7, 2023
    Assignee: RICHTEK TECHNOLOGY CORPOATION
    Inventors: Kuo-Chi Liu, Ta-Yung Yang, Chung-Lung Pai
  • Publication number: 20230065818
    Abstract: An apparatus for performing a deposition process on a semiconductor wafer includes a chamber, a wafer holder, and a shielding structure. The chamber contains a reaction area, the wafer holder is disposed in the chamber to hold the semiconductor wafer, and the reaction area is above the semiconductor wafer. The shielding structure is disposed in the chamber and isolates an inner sidewall of the chamber from the reaction area. The shielding structure includes a base member, a first member, and a second member. The base member is disposed between the inner sidewall of the chamber and the wafer holder. The first member is disposed on the base member and is windowless. The second member is disposed on the base member and within the first member, and the second member includes a sidewall provided with a first window to transfer the semiconductor wafer.
    Type: Application
    Filed: August 30, 2021
    Publication date: March 2, 2023
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chih-Wei Chou, Sheng-Yuan Lin, Yuan-Hsin Chi, Yin-Tun Chou, Hung-Chih Wang, Yu-Chi Liu
  • Publication number: 20230068139
    Abstract: A clamp ring including an inner periphery of increased diameter at locations where inwardly extending tabs are not located reduces the risk a workpiece that is placed in close proximity to the clamp ring or which contacts the clamp ring during processing will stick to the clamp ring.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 2, 2023
    Inventors: Chih-Wei CHOU, Yuan-Hsin CHI, Yin-Tun CHOU, Hung-Chih WANG, Yu-Chi LIU, Chih-Ming WANG
  • Patent number: 11592330
    Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: February 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Kuan Tang, Yi-Cheng Chiu, Chia-Chi Kuo, Jui-Te Chiu, Han-Chi Liu
  • Patent number: 11592331
    Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: February 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Kuan Tang, Yi-Cheng Chiu, Chia-Chi Kuo, Jui-Te Chiu, Han-Chi Liu
  • Publication number: 20230056353
    Abstract: A micro scanning mirror, including a fixed substrate, a lens, and multiple cantilevers, are provided. Each cantilever includes a piezoelectric material structure, multiple first drive electrodes, and multiple second drive electrodes. The piezoelectric material structure includes a connecting part, a folding part, and a fixed part. The connecting part connects the lens along a direction parallel to a central axis of the lens. The folding part has a bending region and multiple drive electrode regions. The fixed part is connected to the fixed substrate, and the folding part is connected to the connecting part and the fixed part. The first drive electrodes and the second drive electrodes are respectively located in the corresponding drive electrode regions in the folding part. The micro scanning mirror of the disclosure can drive a large-sized micro mirror to rotate at an appropriate rotation angle.
    Type: Application
    Filed: August 3, 2022
    Publication date: February 23, 2023
    Applicant: Coretronic MEMS Corporation
    Inventors: Shih-Chi Liu, Wei-Leun Fang, Kai-Chih Liang, Kai-Chieh Chang, Ming-Ching Wu
  • Publication number: 20230057909
    Abstract: A projection device includes a heat source and a heat dissipation module, including a heat dissipation base, a heat dissipation fin set, at least one heat conductor, a first fan and a second fan. The heat dissipation fin set has first and second regions adjacent to each other. The first region is located between the heat dissipation base and the second region. The first region has two opposite first ventilation surfaces. The second region has two opposite second ventilation surfaces. There is an angle between a normal direction of the first ventilation surface and a normal direction of the second ventilation surface. The heat conductor is connected between the heat dissipation base and the heat dissipation fin set. The first fan generates a first airflow flowing through the first ventilation surfaces. The second fan generates a second airflow flowing through the second ventilation surfaces.
    Type: Application
    Filed: August 18, 2022
    Publication date: February 23, 2023
    Inventors: JIA-HONG DAI, WEI-CHI LIU
  • Publication number: 20230033053
    Abstract: There is provided a human falling detection system including an image sensor, a thermal sensor and a microphone. The image sensor captures an image frame that is used to identify a face and a height-width ratio of a human image. The thermal sensor is used as a filter for filtering out a living body and captures a thermal image that is used to identify a height-width ratio of a human thermal image. The microphone records a time stamp of an abrupt sound appearing.
    Type: Application
    Filed: October 11, 2022
    Publication date: February 2, 2023
    Inventors: FENG-CHI LIU, NIEN-TSE CHEN
  • Publication number: 20230033834
    Abstract: A heat dissipating module includes a casing including a bottom plate and a water inlet; a cover plate disposed on one side of the casing opposite to the bottom plate; a pressurizing device moving back and forth in the casing and having a maximum stroke; a water pump disposed between the bottom plate and the pressurizing device, where liquid fills a space between the water pump and the pressurizing device to define a water tank; and a stop valve disposed in the water tank and located between the pressurizing device and the water pump. According to a direction from the bottom plate to the cover plate, the height of the water inlet is lower than the stop valve. The heat dissipating module has a small volume and is configured to flip at multiple angles. A projection device including the heat dissipating module and having structural reliability is also provided.
    Type: Application
    Filed: August 2, 2022
    Publication date: February 2, 2023
    Applicant: Coretronic Corporation
    Inventors: Shi-Wen Lin, Wei-Chi Liu, Tsung-Ching Lin