Patents by Inventor Won Pil Yu

Won Pil Yu 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: 20100049366
    Abstract: A method of responding to environmental change to build an environment map of a mobile apparatus and an apparatus thereof are disclosed. The apparatus includes a traveling unit traveling a mobile apparatus according to a command, a distance measuring unit measuring a distance from the mobile apparatus to a moving object, an environment map-generating unit generating an environment map based on a measured distance, a moving object detecting unit detecting the moving object moved after generating the environment map by comparing a distance from the mobile apparatus to the moving object with the newly measured distance, and a controlling unit updating the environment map according to the command by selectively applying changed environment information containing the moving object to the built environment map when the moving object is detected. Thus, the changed environmental information can be rapidly and precisely applied to build the environment map.
    Type: Application
    Filed: November 30, 2007
    Publication date: February 25, 2010
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yu Cheol Lee, Won Pil Yu, Sang Ik Na, Hyo Sung Ahn
  • Publication number: 20090312871
    Abstract: Disclosed is a system and method for calculation a location in a real-time manner using a combination of odometry and artificial landmarks.
    Type: Application
    Filed: March 13, 2007
    Publication date: December 17, 2009
    Inventors: Jae-Yeong Lee, Heesung Chae, Won-Pil Yu
  • Patent number: 7634336
    Abstract: A localization system and method of a mobile robot using a camera and artificial landmarks in a home and a general office environment (or working zone) is provided. The localization system includes artificial landmarks having an LED flash function in an invisible wavelength band, a camera with a wide-angle lens, a module flashing landmarks attached at the ceiling and identifying positions and IDs of the landmarks from an image photographed by the camera having a filter, a module calculating position and orientation of the robot using two landmarks of the image in a stop state, a module, when a ceiling to which the landmarks are attached has different heights, a position of the robot, and a module, when a new landmark is attached in the working zone, calculating a position of the new landmark on an absolute coordinate.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: December 15, 2009
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Heesung Chae, Won Pil Yu, Jae Young Lee, Young Jo Cho
  • Publication number: 20090295546
    Abstract: A wireless sensor network communication apparatus and method selectively using infrared and radio frequency communication. The wireless sensor network communication apparatus includes a first communicating unit, a second communication unit, and a wireless node processor. The first communicating unit wakens a neighboring node in a sleep mode and transmits/receives the woken node and sensor data. The second communicating unit transmits/receives the woken neighboring node and the sensor data. The wireless node processor is wakened from the sleep mode, wakens the neighboring node in the sleep mode, and transmits the sensor data with a minimum low power through one of the first and second communicating unit. Accordingly, the apparatus can perform the wireless sensor network communication with lower power compared to the case that communication is performed only by the radio frequency communication function.
    Type: Application
    Filed: August 10, 2006
    Publication date: December 3, 2009
    Inventors: Young-Guk Ha, Joo-Chan Sohn, Won-Pil Yu, Young-Jo Cho
  • Publication number: 20090164044
    Abstract: A localization service framework for estimating a position of a robot includes a plurality of sensors, a sensor property based localization module connected to the plurality of sensors for converting sensor data sensed by the sensors into position data of the sensors on a basis of the properties of the sensors, respectively, in response to the request of position information of the robot, and a position information combining module for combining the position data of the sensors to obtain position information of the robot, the position information of the robot being provided to the application through the localization service interface.
    Type: Application
    Filed: July 11, 2008
    Publication date: June 25, 2009
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kyu Seo Han, Won Pil Yu
  • Publication number: 20090031823
    Abstract: Provided is an apparatus for detecting the tension, moving direction, and length of a connector. The detecting apparatus includes a connector including one end connected inside the movement detecting apparatus and other end disposed at an outer side of the movement detecting apparatus, a tension detector measuring a tension force applied to the connector by detecting a minute change in a parameter of the tension detector when the other end of the connector is pulled away from the movement detecting apparatus, a direction detector measuring a movement of the connector in horizontal and vertical directions in a plane substantially perpendicular to the tension so as to detect a direction of the tension force applied to the connector, and a length detector detecting a length of the connector extended from the movement detecting apparatus by the tension force applied to the connector.
    Type: Application
    Filed: July 28, 2006
    Publication date: February 5, 2009
    Inventors: Nakju Doh, Won Pil Yu, Sang Ik Na, Yu-Cheol Lee, Hyo-Sung Ahn
  • Publication number: 20080310682
    Abstract: Provided is a system and method for providing location information of robot in real time using an artificial mark. The system includes: an image processing module for obtaining an image signal by photographing artificial marks installed at a predetermined space with a space coordinate and detecting an image coordinate of artificial mark from the obtaining the image signal; a location calculating module for calculating a current location by comparing the image coordinate of detected artificial mark and a pre-stored space coordinate of artificial mark; and an artificial mark identifying module for updating current location information by selectively using one of an artificial mark tracing process and an image coordinate estimating process.
    Type: Application
    Filed: December 14, 2005
    Publication date: December 18, 2008
    Inventors: Jae Yeong Lee, Heesung Chae, Won Pil Yu, Young Jo Cho
  • Publication number: 20080294338
    Abstract: A method of mapping and navigating a mobile robot by an artificial landmark and a local coordinate is provided. The method of creating a map includes: a) recognizing an artificial landmark in a target space and defining the recognized artificial landmark as a predetermined node; b) defining an adjacent artificial landmark as a destination node while traveling to the adjacent artificial landmark; c) defining the recognized artificial landmark as an origin of a local coordinate, defining a coordinate axis provided from the predetermined artificial landmark as a coordinate axis of the origin, obtaining and storing information about the predetermined node, the destination node, and an edge connecting the predetermined node and the destination node; and d) creating a map by storing information about edges between each of nodes to an adjacent node for all of the artificial landmarks through repeatedly performing the steps b) and c).
    Type: Application
    Filed: July 26, 2006
    Publication date: November 27, 2008
    Inventors: Nakju Doh, Won Pil Yu, Sang Ik Na
  • Publication number: 20080131032
    Abstract: Provided are an optical vision chip (OVC) and an image recognition method using the OVC. The OVC includes: a first display displaying an object image; a second display displaying a standard model image; and an optical sensor optically or electrically coupling the object image and the standard model image respectively displayed on the first and second displays and outputting a difference between the object image and the standard model image as an electrical signal.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 5, 2008
    Applicant: ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sahnggi PARK, Won Pil Yu, Kwang Ryong Oh
  • Publication number: 20070150097
    Abstract: A localization system and method of a mobile robot using a camera and artificial landmarks in a home and a general office environment (or working zone) is provided. The localization system includes artificial landmarks having an LED flash function in an invisible wavelength band, a camera with a wide-angle lens, a module flashing landmarks attached at the ceiling and identifying positions and IDs of the landmarks from an image photographed by the camera having a filter, a module calculating position and orientation of the robot using two landmarks of the image in a stop state, a module, when a ceiling to which the landmarks are attached has different heights, a position of the robot, and a module, when a new landmark is attached in the working zone, calculating a position of the new landmark on an absolute coordinate.
    Type: Application
    Filed: August 23, 2006
    Publication date: June 28, 2007
    Inventors: Heesung Chae, Won Pil Yu, Jae Young Lee, Young Jo Cho
  • Patent number: 7072513
    Abstract: Disclosed is a method of segmenting handwritten touching numeral strings having a non-vertical segmentation line.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: July 4, 2006
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kye Kyung Kim, Yun Koo Chung, Su Young Chi, Won Pil Yu, Hyoung Gu Lee, Soo Hyun Cho
  • Patent number: 6920246
    Abstract: Disclosed is a method of segmenting touching numeral strings contained in handwritten touching numeral strings, and recognizing the numeral strings by use of feature information and recognized results provided by inherent structure of digits.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: July 19, 2005
    Assignee: Electronics and Telecommunication Research Institute
    Inventors: Kye Kyung Kim, Yun Koo Chung, Su Young Chi, Young Sup Hwang, Won Pil Yu, Soo Hyun Cho, Hyoung Gu Lee
  • Publication number: 20040101197
    Abstract: Disclosed is a method of segmenting handwritten touching numeral strings having a non-vertical segmentation line.
    Type: Application
    Filed: February 7, 2003
    Publication date: May 27, 2004
    Inventors: Kye Kyung Kim, Yun Koo Chung, Su Young Chi, Won Pil Yu, Hyoung Gu Lee, Soo Hyun Cho
  • Publication number: 20030118235
    Abstract: Disclosed is a method of segmenting touching numeral strings contained in handwritten touching numeral strings, and recognizing the numeral strings by use of feature information and recognized results provided by inherent structure of digits.
    Type: Application
    Filed: March 18, 2002
    Publication date: June 26, 2003
    Inventors: Kye Kyung Kim, Yun Koo Chung, Su Young Chi, Young Sup Hwang, Won Pil Yu, Soo Hyun Cho, Hyoung Gu Lee