Patents by Inventor Dong Cha

Dong Cha 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: 10471601
    Abstract: An apparatus for controlling a robot arm includes: the robot arm; a calibration board on which calibration marks for self-diagnosis are shown; a distance sensor mounted on the robot arm and configured to measure a distance; an image sensor mounted on the robot arm and configured to obtain an image; and a processor configured to move the robot arm to a position for the self-diagnosis, measure a distance from a predetermined part of the robot arm to the calibration board by using the distance sensor, obtain an image of the calibration board by using the image sensor, and output a signal indicating a malfunction of the robot arm in response to the measured distance being outside a distance error range, and an image measurement value of the obtained image being outside an image error range.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: November 12, 2019
    Assignee: HANWHA PRECISION MACHINERY CO., LTD.
    Inventors: Jae Ho Jeong, Young Dong Cha
  • Publication number: 20180154523
    Abstract: An apparatus for controlling a robot arm includes: the robot arm; a calibration board on which calibration marks for self-diagnosis are shown; a distance sensor mounted on the robot arm and configured to measure a distance; an image sensor mounted on the robot arm and configured to obtain an image; and a processor configured to move the robot arm to a position for the self-diagnosis, measure a distance from a predetermined part of the robot arm to the calibration board by using the distance sensor, obtain an image of the calibration board by using the image sensor, and output a signal indicating a malfunction of the robot arm in response to the measured distance being outside a distance error range, and an image measurement value of the obtained image being outside an image error range.
    Type: Application
    Filed: May 24, 2017
    Publication date: June 7, 2018
    Applicant: Hanwha Techwin Co., Ltd.
    Inventors: Jae Ho JEONG, Young Dong CHA
  • Publication number: 20060225806
    Abstract: The present invention provides a multi-wefts inserting weaving machine, comprising a block arraying device comprising an upper plate and a lower plate which face each other and are movable upward and downward; and a plural number of unit blocks attached to the internal facing sides of the upper plate and the lower plate of the block arraying device through combining grooves, wherein the unit blocks include two grooves. Accordingly, a lattice woven structure can be easily woven from heavy-duty materials by the present multi-wefts inserting weaving machine.
    Type: Application
    Filed: June 27, 2006
    Publication date: October 12, 2006
    Applicants: T-FOR-L CO., LTD, SAMYANG CORPORATION
    Inventors: Jin Chon, Chang Lee, Seong Cho, Dong Cha
  • Publication number: 20060126005
    Abstract: A method is provided for reforming a color filter array of a CMOS image sensor, wherein the method includes exposing the first cap oxide layer by removing the first micro-lens, the first cap oxide layer by removing the first micro-lens, the first OCM pattern and the first color filter array; removing the exposed first cap oxide layer; forming a second cap oxide layer on an entire surface of the semiconductor substrate; forming a second color filter array on the second cap oxide layer in correspondence with the unit pixel array region; forming a second OCM pattern on the second color filter array; exposing the metal pad by selectively etching the second cap oxide layer; and forming a second micro-lens on the second OCM pattern.
    Type: Application
    Filed: December 14, 2005
    Publication date: June 15, 2006
    Inventor: Dong Cha