Patents by Inventor Hyun-Wook YOO

Hyun-Wook YOO 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: 12264907
    Abstract: A device for measuring a height includes an inclined portion including a display, a bottom portion connected to the inclined portion, a support vertically connected to the bottom portion, and a laser device disposed in a region where the inclined portion and the support meet each other, the inclined portion, the bottom portion, and the support are connected to each other based on a shape of a right triangle when viewed from a side, the bottom portion includes a support plate for covering the bottom portion, and a switch is included between the bottom portion and the support plate.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: April 1, 2025
    Assignee: MAGPIE TECH INC.
    Inventors: Ung Chul Shin, Hyun Mi Choi, Young Seun Chae, Tae Ryang Kwon, Jung Han Yoo, Sung Wook Youn, Young Ju Jung
  • Patent number: 9590505
    Abstract: A switching regulator includes a DC-DC converter and a dynamic voltage positioning circuit. The DC-DC converter includes an inductor connected between an input port and an output port. The dynamic voltage positioning circuit includes a sensing circuit and a mirroring circuit. The sensing circuit is configured to sense an inductor current flowing through the inductor, and to convert a voltage applied to a direct current resistance (DCR) of the inductor into a droop current using a variable resistor. The mirroring circuit is configured to cause a voltage drop at the output port of the DC-DC converter based on a current corresponding to a difference between a bias current and the droop current.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: March 7, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Woo Moon, Hyun-Wook Yoo, Yus Ko, Dong-Jin Keum, Pyung-Woo Yeon
  • Patent number: 9438109
    Abstract: A bi-directional voltage positioning circuit includes a voltage to current converter, a current mirror circuit and a switch. The voltage to current converter converts a sensing voltage to a first current, and the sensing voltage is sensed based on a current flowing through an output coil connected between a switching node and an output node. The current mirror circuit mirrors the first current to generate a second current and a third current, the second current is N times greater than the first current, the third current is M times greater than the first current, and N and M are real numbers greater than zero. The switch provides a feedback node with one of the second current and third current in response to a switching control signal, and an output voltage of the output node is divided at the feedback node.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: September 6, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Woo Moon, Myeong-Lyong Ko, Yu-Seok Ko, Dong-Jin Keum, Hyun-Wook Yoo, Hwa-Yeal Yu
  • Publication number: 20150263615
    Abstract: A switching regulator includes a DC-DC converter and a dynamic voltage positioning circuit. The DC-DC converter includes an inductor connected between an input port and an output port. The dynamic voltage positioning circuit includes a sensing circuit and a mirroring circuit. The sensing circuit is configured to sense an inductor current flowing through the inductor, and to convert a voltage applied to a direct current resistance (DCR) of the inductor into a droop current using a variable resistor. The mirroring circuit is configured to cause a voltage drop at the output port of the DC-DC converter based on a current corresponding to a difference between a bias current and the droop current.
    Type: Application
    Filed: November 17, 2014
    Publication date: September 17, 2015
    Inventors: Sung-Woo MOON, Hyun-Wook YOO, Yus KO, Dong-Jin KEUM, Pyung-Woo YEON
  • Publication number: 20140253073
    Abstract: A bi-directional voltage positioning circuit includes a voltage to current converter, a current mirror circuit and a switch. The voltage to current converter converts a sensing voltage to a first current, and the sensing voltage is sensed based on a current flowing through an output coil connected between a switching node and an output node. The current mirror circuit mirrors the first current to generate a second current and a third current, the second current is N times greater than the first current, the third current is M times greater than the first current, and N and M are real numbers greater than zero. The switch provides a feedback node with one of the second current and third current in response to a switching control signal, and an output voltage of the output node is divided at the feedback node.
    Type: Application
    Filed: February 24, 2014
    Publication date: September 11, 2014
    Inventors: Sung-Woo MOON, Myeong-Lyong KO, Yu-Seok KO, Dong-Jin KEUM, Hyun-Wook YOO, Hwa-Yeal YU