Patents by Inventor Chih-Yuan Chen

Chih-Yuan 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: 10823211
    Abstract: A floating fastener includes a socket fastened to a first board member, a locking device axially slidably mounted in the socket and adapted for locking the socket and the first board member to a second board member, and an insulative barrel including a flexible barrel body attached onto the socket, a cap for capping on the barrel body to shield the locking device in the socket and to protect the socket and the locking device against corrosion and a flexible connecting strip connected between the barrel body and the cap.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: November 3, 2020
    Assignee: Hanwit Precision Industries Ltd.
    Inventors: Ming-De Wu, Chih-Yuan Chen
  • Publication number: 20200335288
    Abstract: A waterproof button module includes a pressing element, a circuit board, an adhesive layer, and an elastic layer sequentially stacked. The adhesive layer is attached to the circuit board and the elastic layer. The adhesive layer includes a first opening, and the elastic layer includes a second opening. The first opening is aligned with the second opening and exposes a part of the rear surface of the circuit board. The adhesive layer has an annular zone adjacent to and surrounding the first opening. The annular zone directly contacts the circuit board. The waterproof button module further includes an electric-connection assembly and a switch. The electric-connection assembly is electrically connected to the circuit board, and passes through the first opening and the second opening. The switch is electrically connected to the circuit board, and has a button. In addition, an electronic device including the waterproof button module is disclosed.
    Type: Application
    Filed: April 16, 2020
    Publication date: October 22, 2020
    Inventors: XIAO LI, CHIH-YUAN CHEN, SHUN-LONG LEE
  • Patent number: 10794682
    Abstract: A ball screw with tilt detector includes a screw rod, two screw nuts, a channel, a plurality of balls, and a tilt detector. The screw rod is extended along a direction of an axis. The two screw nuts are installed on the screw rod and capable of moving along the axis. The tilt detector is disposed between the two screw nuts to detect a tilt angle and a preload of the two screw nuts. The tilt detector includes a force receiving element, at least one first strain sensor, and at least one second strain sensor. The force receiving element includes a point symmetric ring-type structure, and the ring-type structure has two planes which are parallel to each other and respectively contact the two screw nuts.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: October 6, 2020
    Assignee: Industrial Technology Research Institute
    Inventors: Chih-Yuan Chen, Chung-Yuan Su, Chih-Che Lin, Chao-Ta Huang
  • Publication number: 20200235079
    Abstract: A chip-scale LED package structure includes a white light emitting unit for emitting a white light, a red flip-chip LED for emitting a red light, a green flip-chip LED for emitting a green light, a blue flip-chip LED for emitting a blue light, and an encapsulation layer. The encapsulation includes an encapsulation resin and a plurality of refractive particles distributed in the encapsulation resin. The encapsulation layer encapsulates the white light emitting unit, the red flip-chip LED, the green flip-chip LED, and the blue flip-chip LED. Moreover, electrodes of the white light emitting unit, electrodes of the red flip-chip LED, electrodes of the green flip-chip LED, and electrodes of the blue flip-chip LED are exposed from the encapsulation layer.
    Type: Application
    Filed: December 18, 2019
    Publication date: July 23, 2020
    Inventors: TIEN-YU LEE, CHIH-YUAN CHEN, WEI-LUN TSAI, CHIEN-TUNG HUANG, WEI-HSUN HSU, WEI-CHIEN HUNG
  • Publication number: 20200200629
    Abstract: A multi-axis force sensor including a central portion, an outer ring portion, and at least one sensing portion disposed along an axial direction of an axis is provided. The sensing portion includes a first and a second elements connected with each other, and at least one first and at least one second strain gauges. A first end surface of the first element is connected to the central portion, and a second end surface of the second element is connected to the outer ring portion. A normal vector of the first end surface is parallel to the axis and the axis passes through a centroid of the first end surface. When the first end surface is subjected to an axial force, a first strain of a first sensing region of the first element in the axial direction is smaller than a second strain of a second sensing region of the second element in the axial direction.
    Type: Application
    Filed: July 22, 2019
    Publication date: June 25, 2020
    Applicant: Industrial Technology Research Institute
    Inventors: Chih-Che Lin, Chih-Yuan Chen, Chung-Yuan Su, Chao-Ta Huang
  • Publication number: 20200185580
    Abstract: A light emitting unit includes a reflective structure, a light transmitting body and a light emitting chip. The reflective structure has a recess formed by inner side surfaces thereof, and the reflective structure includes a side opening and a bottom opening corresponding to the recess. The side opening and the bottom opening are adjacent to each other, and the inner side surfaces are defined as a top surface and a surrounding side surface. The light transmitting body is disposed within the recess and doped with fluorescent powder. The light transmitting body includes a light emitting surface and an electrode exposing surface. The light emitting surface is corresponding to the side opening; and the electrode exposing surface is corresponding to the bottom opening. The light emitting chip is partially disposed within the light transmitting body and has a bottom, a top light emitting and a surrounding light emitting surface.
    Type: Application
    Filed: November 29, 2019
    Publication date: June 11, 2020
    Inventors: Yu-Yu Chang, Chih-Yuan Chen, Yung-Chang Jen
  • Publication number: 20200176648
    Abstract: A light emitting package structure includes: a light emitting chip, an encapsulant covering the light emitting chip and having an anti-adhesion upper surface and an anti-adhesion surrounding surface. A method of manufacturing a light emitting package structure is further provided and includes: configuring a plurality of light emitting chips on a temporary carrier; forming an encapsulant to cover the plurality of light emitting chips; cutting the encapsulant to form the independent light emitting package structure; and surface treating the cut encapsulant such that the encapsulant has an anti-adhesion upper surface and an anti-adhesion surrounding surface.
    Type: Application
    Filed: October 4, 2019
    Publication date: June 4, 2020
    Inventors: CHIH-YUAN CHEN, TIEN-YU LEE, CHIEN-TUNG HUANG, WEI-LUN TSAI
  • Patent number: 10634712
    Abstract: Disclosed is a current sensing circuit to sense a current flowing through a load switch. The load switch receives a supply voltage to generate an output voltage. The current sensing circuit includes a first circuit and a second circuit. The first circuit is coupled the load switch through a first resistor, and senses the current flowing through the load switch. The second circuit is coupled to the first circuit and the load switch, senses the output voltage, and generates an adjusting current according to the output voltage. The second circuit generates the adjusting current when the output voltage is smaller than a threshold voltage, such that the ratio of the current flowing through the load switch to a current flowing through the first circuit is maintained at certain ratio, but the second circuit is disabled when the output voltage is larger than or equal to the threshold voltage.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: April 28, 2020
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Chih-Yuan Chen, Ping-Yu Tsai
  • Patent number: 10574230
    Abstract: A power switch circuit includes a first switch circuit, a second switch unit and a capacitor. The capacitor has a first terminal coupled to a node between the first and second switch units. In addition, the capacitor has a second terminal coupled to the first and second switch units, a charge pump and a charging circuit. When the power switch circuit is coupled to a load, the charging circuit pre-charges the capacitor. Once the load is enabled, the first and second switch units are turned on by only a small voltage increase at the second terminal of the capacitor by the charge pump to allow power to be supplied to a load through the first and second switch units from a power supply.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: February 25, 2020
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Tsung-Yu Wu, Chih-Yuan Chen, Yu-Yu Chen
  • Publication number: 20200025281
    Abstract: A ball screw with force sensor in radial direction including a screw rod, a screw nut, a plurality of balls, and a force sensor is provided. The screw nut has a cavity. The cavity is extended along a radial direction from an outer surface of the screw nut. The force sensor is disposed in the cavity of the screw nut, and the force sensor includes a stationary base and an elastic component. The stationary base includes a displacement restraint, and the elastic component includes a contact end and a fixed end. The displacement restraint is coupled to the cavity to prevent the stationary base from being displaced in the radial direction for fixing stationary base firmly in the cavity. The fixed end is connected to the stationary base, and the contact end contacts a bottom surface of the cavity in order to sense a force along the radial direction.
    Type: Application
    Filed: December 17, 2018
    Publication date: January 23, 2020
    Applicant: Industrial Technology Research Institute
    Inventors: Chih-Yuan Chen, Chung-Yuan Su, Chien-Nan Yeh, Chao-Ta Huang, Yu-Wen Hsu
  • Patent number: 10454461
    Abstract: A frequency compensation circuit includes a compensation circuit and a calculation circuit. The compensation circuit controls the calculation circuit to generate a ramp voltage when the voltage at a node between an upper-side switch and a lower-side switch of the DC voltage converter is larger than an input voltage of the DC voltage converter. The calculation circuit generates a control signal at low level when the ramp voltage is smaller than the output voltage of the DC voltage converter so that the frequency compensation circuit generates the constant on-time signal at high level. The calculation generates the control signal at high level when the ramp voltage is larger than or equal to the output voltage of the DC voltage converter so that the frequency compensation circuit generates the constant on-time signal at low level.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: October 22, 2019
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Tzu-Yang Yen, Chih-Yuan Chen
  • Patent number: 10436654
    Abstract: An interaction force detection apparatus includes a sensor, a driving element, a moving element, and a connecting element. The connecting element is connected to the driving element and the sensor. The driving element is adapted to interact with the moving element, so as to generate a pair of forces. The pair of forces includes a first force and a second force, and a magnitude of the first force is equal to that of the second force. The sensor detects the first force exerted on the driving element, and the second force is exerted on the moving element to generate a movement.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: October 8, 2019
    Assignee: Industrial Technology Research Institute
    Inventors: Chung-Yuan Su, Chih-Yuan Chen, Chao-Ta Huang, Yu-Wen Hsu
  • Publication number: 20190271735
    Abstract: Disclosed is a current sensing circuit to sense a current flowing through a load switch. The load switch receives a supply voltage to generate an output voltage. The current sensing circuit includes a first circuit and a second circuit. The first circuit is coupled the load switch through a first resistor, and senses the current flowing through the load switch. The second circuit is coupled to the first circuit and the load switch, senses the output voltage, and generates an adjusting current according to the output voltage. The second circuit generates the adjusting current when the output voltage is smaller than a threshold voltage, such that the ratio of the current flowing through the load switch to a current flowing through the first circuit is maintained at certain ratio, but the second circuit is disabled when the output voltage is larger than or equal to the threshold voltage.
    Type: Application
    Filed: June 7, 2018
    Publication date: September 5, 2019
    Inventors: CHIH-YUAN CHEN, PING-YU TSAI
  • Patent number: 10367876
    Abstract: Systems and methods monitor a system including a remote desktop, a trusted mobile instance, and a delivery handler. The delivery handler can determine if the system is overloaded and to take the appropriate measures to maintain a negotiated minimal QoS and adapt as necessary when the conditions vary. Additionally, the systems and method can address security issues by separating privileges that are typically bundled together in conventional systems, and by applying isolation mechanisms to exposed areas of the system.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: July 30, 2019
    Assignee: AVAST SOFTWARE S.R.O.
    Inventors: David Chih-Yuan Chen, Jose Luis Ferras Pereira, Pablo German Sole
  • Publication number: 20190204064
    Abstract: A ball screw with tilt detector includes a screw rod, two screw nuts, a channel, a plurality of balls, and a tilt detector. The screw rod is extended along a direction of an axis. The two screw nuts are installed on the screw rod and capable of moving along the axis. The tilt detector is disposed between the two screw nuts to detect a tilt angle and a preload of the two screw nuts. The tilt detector includes a force receiving element, at least one first strain sensor, and at least one second strain sensor. The force receiving element includes a point symmetric ring-type structure, and the ring-type structure has two planes which are parallel to each other and respectively contact the two screw nuts.
    Type: Application
    Filed: September 20, 2018
    Publication date: July 4, 2019
    Applicant: Industrial Technology Research Institute
    Inventors: Chih-Yuan Chen, Chung-Yuan Su, Chih-Che Lin, Chao-Ta Huang
  • Patent number: 10338615
    Abstract: A current balance circuit is used in a multiphase converter, and the multiphase converter includes power stage circuits, the current balance circuit and a control circuit. The current balance circuit includes detection units, a calculation circuit and error amplifiers. Detection units obtain the output power information of their corresponding power stage circuits. After each error amplifier compares the obtained output power information with the average of all output power information, it amplifies differences between the output power information and the average of all output power information and converts the amplified differences to current information, such that the control circuit adjusts currents provided by the power stage circuits according to the current information from the error amplifiers to balance the currents provided by the power stage circuits.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: July 2, 2019
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Chih-Yuan Chen, Tzu-Yang Yen
  • Publication number: 20190196520
    Abstract: An apparatus with two anchors including a housing, a movable element, and a rotary element is provided. The housing includes a first expansion unit, a second expansion unit, and a linkage. First alignment structures are disposed in the movable element and anti-rotation structures are disposed in the linkage. When the movable element and the rotary element enter the housing from two ends and are coupled along an axis, the movable element and the rotary element can approach each other to expand the first expansion unit and the second expansion unit to fonn two anchors. The apparatus :with two anchors secures a sensor in a variety of environments such as walls or machines. When the apparatus with two anchors fixes a sensor in a hole of a stamping machine, the impact force does not cause stress concentration on the sensor so as to improve the reliability of the sensor.
    Type: Application
    Filed: December 25, 2017
    Publication date: June 27, 2019
    Applicant: Industrial Technology Research Institute
    Inventors: Chien-Nan Yeh, Chung-Yuan Su, Chih-Yuan Chen, Chao-Ta Huang, Yu-Wen Hsu
  • Patent number: 10312806
    Abstract: The present disclosure provides a voltage converter for simulating inductor current control, which simulates an inductor current of a power level circuit according to operation signals generated by a control circuit, an input voltage, and an output voltage, thereby achieving detection of the inductor current by using a non-sensing method. Therefore, compared to a conventional sensing method, the voltage converter of the present disclosure can reduce use of a sensing circuit to reduce costs, and an inductor current ramp generated thereby has no distortion. Accordingly, the voltage converter of the present disclosure can improve the accuracy of inductor current detection.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: June 4, 2019
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Chih-Yuan Chen, Zhan-Zhe Huang
  • Patent number: 10294971
    Abstract: The present disclosure illustrates a fixing device comprising a sleeve which has a through hole inside and has grooves recessed on an outer surface thereof, and is placed inside receiving space of an outer casting tube, and the receiving space being formed with longitudinal protrusion rib disposed on an inside wall thereof and slidable in the grooves, and a head part is disposed inside the receiving space and has a mounting; a resilient component is abutted between the head part and the sleeve; a fastener fixed on the head part and having a riveting part mounted in the mounting hole, and a rod extended from a bottom thereof and inserted through the through hole, and having longitudinal sections and arc surfaces and the rod having a stop part outwardly protruded on a bottom side thereof, and having a guiding incline formed at top thereof.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: May 21, 2019
    Assignee: HANWIT PRECISION INDUSTRIES LTD.
    Inventors: Ming-De Wu, Chih-Yuan Chen
  • Patent number: 10211735
    Abstract: A voltage converter for fast load transient response adapted for a boost type voltage converter determines whether a transient state occurs, that is, whether a load is converted from a heavy load to a light load, according to a transient detection circuit. When the transient state occurs, an inductive current quickly drops to a corresponding current value to accelerate the rate of an output voltage returning to a stable voltage value, and to shorten a time of load transient response, so as to avoid affecting the performance of a load, especially a sensitive load.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: February 19, 2019
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Chih-Yuan Chen, Zhan-Zhe Huang