Patents by Inventor Sang Chul Ahn

Sang Chul Ahn 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: 20150091942
    Abstract: Disclosed is a system for authoring and providing augmented reality contents, which includes a database storing a plurality of place models expressing an inherent physical place, a positioning unit for determining a current position of a user, a place model processing unit for searching and loading a place model corresponding to the current position of the user from the database, and a virtual object processing unit for disposing a virtual object expressed through a HTML document at a predetermined location in the loaded place model, wherein the plurality of place models is hierarchically stored so that at least one place model has at least one another place model of a subordinate concept.
    Type: Application
    Filed: December 24, 2013
    Publication date: April 2, 2015
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Heedong KO, Sang-chul AHN, Byounghyun YOO
  • Publication number: 20140363088
    Abstract: A method of recognizing a hand shape by using a database including a plurality of hand shape depth images includes receiving a motion of a user, extracting a hand shape depth image of the user from the received motion, normalizing a size and depth values of the extracted hand shape depth image to conform to criteria of a size and depth values of the hand shape depth images stored in the database, and detecting from the database a hand shape depth image corresponding to the normalized hand shape depth image. It is possible to detect a hand shape depth image in a rapid and accurate way with the disclosed method.
    Type: Application
    Filed: June 3, 2014
    Publication date: December 11, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Young-woon CHA, Hwasup LIM, Sang Chul AHN, Hyoung Gon KIM
  • Publication number: 20140361175
    Abstract: Disclosed is a device for extracting depth information using infrared light which can be provided at low cost in such a way to apply a nonlinear crystal and a photonic crystal to a depth camera and comprises infrared light emission unit which emits a first infrared light toward a subject; a wavelength conversion unit which concerts the first infrared light reflected from the subject into a second infrared light having a wavelength shorter than the wavelength of the first infrared light; and depth information extraction unit which detects the converted second infrared light and extracts depth information of the subject, wherein the wavelength conversion unit is formed of a crystal capable of concerting the length of the wavelength. The wavelength conversion unit is formed of a crystal which is capable of converting the length of wavelength.
    Type: Application
    Filed: October 30, 2013
    Publication date: December 11, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hwasup Lim, Jae Hun Kim, Sang Chul Ahn, Hyoung Gon Kim, Junha Roh
  • Patent number: 8903139
    Abstract: A method of reconstructing a three-dimensional (3D) facial shape with super resolution even from a short moving picture having a front facial image by acquiring a super-resolution facial image by applying, as a weighting factor, a per-unit-patch similarity between a target frame and frames remaining after excluding the target frame from among a plurality of continuous frames including the front facial image, and reconstructing the 3D facial shape based on the acquired super-resolution facial image.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: December 2, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Ig Jae Kim, Jaewon Kim, Sang Chul Ahn
  • Publication number: 20140289607
    Abstract: There are provided an augmented reality contents providing apparatus based on a Web information structure including: an HTML document that includes a URI setting unit setting a uniform resource identifier (URI) corresponding to a point of interest (POI), a POI processing unit collecting attribute information from a target terminal and identifying the POI by using the collected attribute information, a virtual object processing unit that matches a virtual object associated with the URI to the identified POI; and a 3D browser engine used for setting coordinates on the 3D physical space such that the POI and the virtual object are displayed in a 3D virtual space through a Web browser of the target terminal, analyzing video information of the POI and the virtual object based on the set coordinates, and providing the target terminal the analyzed video information.
    Type: Application
    Filed: December 23, 2013
    Publication date: September 25, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Heedong KO, Sang-chul AHN
  • Publication number: 20140142750
    Abstract: A device for dynamic reconfiguration of robot components includes: a resource monitoring unit for monitoring resources of a plurality of boards on which components for executing tasks of a robot are loaded; a dynamic reconfiguration unit for dynamically reconfiguring components of the boards, in the case at least one of the boards is at a risk for a scarcity of resources; and a log managing unit for storing a configuration of present components and a configuration of reconfigured components. Accordingly, it is possible to recognize a scarcity of resources in advance while the robot is operating and prevent the robot from malfunctioning by distributing the components.
    Type: Application
    Filed: January 11, 2013
    Publication date: May 22, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Chul AHN, Yong-Moo KWON, Ui Kyu SONG
  • Publication number: 20140132500
    Abstract: Provided is an apparatus for recognizing a location of a moving object in real time. The apparatus includes a lighting portion including a lighting unit for emitting a plurality of optical signals spatially separated in different patterns; an electronic tattoo portion that is attached on the moving object, wherein the electronic tattoo portion includes at least one electronic tattoo unit including a solar cell for detecting each of the plurality of optical signals emitted from the lighting portion, a wireless antenna for wirelessly transmitting the plurality of optical signals detected by the solar cell, and a controller for controlling the transmission of the plurality of optical signals; and a location recognition portion for recognizing the location of the moving object from the plurality of optical signals wirelessly transmitted from the electronic tattoo portion.
    Type: Application
    Filed: June 10, 2013
    Publication date: May 15, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Chul AHN, Ig Jae KIM, Gyu-Chull HAN, Jaewon KIM
  • Publication number: 20130314320
    Abstract: A method of controlling a three-dimensional virtual cursor (3D) by using a portable electronic device, the method including: sensing at least one of a movement and a touch input of a portable electronic device through a sensor mounted in the portable electronic device; and converting the sensed at least one of the movement and the touch input of the portable electronic device into a cursor control signal for controlling an operation of a cursor in a 3D space to output the cursor control signal. According to the method, a 3D virtual cursor may be conveniently controlled without a location or time limit by using a portable electronic device which a user carries.
    Type: Application
    Filed: December 26, 2012
    Publication date: November 28, 2013
    Inventors: Jae In HWANG, Ig Jae KIM, Sang Chul AHN, Heedong KO
  • Patent number: 8562938
    Abstract: The present invention relates to a composite sintering materials using a carbon nanotube (including carbide nano particles, hereinafter the same) and a manufacturing method thereof, the method comprises the steps of: combining or generating carbon nanotubes in metal powders, a compacted product, or a sintered product; growing and alloying the carbon nanotubes by compacting or sintering the metal powders, the compacted product, or the sintered product; and strengthening the mechanical characteristics by repeatedly performing the sintering process and the combining process or the generating process of the carbon nanotubes.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: October 22, 2013
    Inventors: Sang-chul Ahn, Sun-hwa Yang, Hyeung-eun Ahn
  • Patent number: 8506922
    Abstract: The present invention relates to a composite sintering materials using a carbon nanotube (including carbide nano particles, hereinafter the same) and a manufacturing method thereof, the method comprises the steps of: combining or generating carbon nanotubes in metal powders, a compacted product, or a sintered product; growing and alloying the carbon nanotubes by compacting or sintering the metal powders, the compacted product, or the sintered product; and strengthening the mechanical characteristics by repeatedly performing the sintering process and the combining process or the generating process of the carbon nanotubes.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: August 13, 2013
    Assignee: C & Tech Co., Ltd.
    Inventors: Sang-chul Ahn, Sun-hwa Yang, Hyeung-eun Ahn
  • Publication number: 20130202162
    Abstract: A method of reconstructing a three-dimensional (3D) facial shape with super resolution even from a short moving picture having a front facial image by acquiring a super-resolution facial image by applying, as a weighting factor, a per-unit-patch similarity between a target frame and frames remaining after excluding the target frame from among a plurality of continuous frames including the front facial image, and reconstructing the 3D facial shape based on the acquired super-resolution facial image.
    Type: Application
    Filed: February 1, 2013
    Publication date: August 8, 2013
    Applicant: Korea Institute of Science and Technology
    Inventors: Ig Jae KIM, Jaewon KIM, Sang Chul AHN
  • Patent number: 8443123
    Abstract: Disclosed herein are a UPnP control point and a UPnP device based on the UPnP network and a connecting method using the same, in which a service connection is performed. The service connection is restrictedly performed using a configuration file defined to allow or deny a connection with a specific device on the UPnP network, so that only devices specified by a user can be connected.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: May 14, 2013
    Assignee: Korea Institute of Science and Technology
    Inventors: Sang Chul Ahn, Yong-Moo Kwon, Ju Young Park
  • Publication number: 20130044962
    Abstract: A method and system for reconstructing an image displayed on an electronic device connected to a network, to be a high resolution image. The method of reconstructing a selected area of the image displayed on the electronic device connected to a network, to be a high resolution image, includes: receiving a request to expand the selected area; collecting images including the selected area from the Internet; correcting the selected area to have a high resolution while expanding the selected area based on the collected images; and displaying the image expanded to have a high resolution on the electronic device.
    Type: Application
    Filed: July 10, 2012
    Publication date: February 21, 2013
    Inventors: Jaewon KIM, Ig Jae Kim, Sang Chul Ahn, Jong-Ho Lee
  • Patent number: 8320706
    Abstract: Provided are a method and an apparatus for tagging a photograph with information. The method of tagging a photograph with information, which calculates a shooting position of an input image from reference images having shooting position information to tag the shooting position information, includes: selecting a plurality of reference images; calculating a relative shooting position of the input image to the shooting positions of the reference images; calculating the shooting position of the input image on the basis of the calculation result of the calculating; and storing the shooting position and shooting direction information on the input image in an exchangeable image file format (EXIF) tag of the input image.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: November 27, 2012
    Assignee: Korea Institute of Science and Technology
    Inventors: Ig Jae Kim, Hyoung Gon Kim, Sang Chul Ahn
  • Publication number: 20120249743
    Abstract: A method that highlights a depth-of-field (DOF) region of an image and performs additional image processing by using the DOF region. The method includes: obtaining a first pattern image and a second pattern image that are captured by emitting light according to different patterns from an illumination device; detecting a DOF region by using the first pattern image and the second pattern image; determining weights to highlight the DOF region; and generating the highlighted DOF image by applying the weights to a combined image of the first pattern image and the second pattern image.
    Type: Application
    Filed: April 2, 2012
    Publication date: October 4, 2012
    Applicant: Korea Institute of Science and Technology
    Inventors: Jaewon KIM, Ig Jae KIM, Sang Chul AHN
  • Publication number: 20120134870
    Abstract: The present invention relates to a manufacturing method of composite sintering materials using a carbon nanotube comprises the steps of; pressing metal power to obtain a predetermined form, heating the predetermined form in an atmosphere of nitrogen gas for sintering, dipping and heating a sintered product obtained by the sintering process to an organic solution dispersed with a carbon nanotube to combine the carbon nanotube for generating the carbon nanotube, and sintering the sintered product in an atmosphere of nitrogen gas for re-sintering to grow the generated carbon nanotube. The composite sintering materials using carbon nanotubes of the present invention have excellent mechanical, thermal, and electric and electronic characteristics as well as have effects of material cost reduction and manufacturing cost reduction due to reduced sintering temperature.
    Type: Application
    Filed: January 5, 2012
    Publication date: May 31, 2012
    Applicant: C & TECH CO., LTD.
    Inventors: Sang-chul Ahn, Sun-hwa Yang, Hyung-eun Ahn
  • Publication number: 20120134869
    Abstract: The present invention relates to a manufacturing method of composite sintering materials using a carbon nanotube comprises the steps of; dipping diluted HF solution, natal, or phosphoric acid along with a carbon nanotube solution dispersed to metal power, forming a predetermined form by pressing the master alloys, sintering the predetermined form in an atmosphere of nitrogen gas to grow the carbon nanotube, generating the carbon nanotube in the pores of the predetermined form by inserting ammonia, carbon dioxide carbonated water, acetylene, methane, methanol, or benzene to the sintered product in an inert gas atmosphere of a temperature about 1200° C. to add a toughness; and re-sintering the sintered product in which the carbon nanotube is generated in the atmosphere of nitrogen gas to growth the carbon nanotube.
    Type: Application
    Filed: January 5, 2012
    Publication date: May 31, 2012
    Applicant: C & TECH CO., LTD.
    Inventors: Sang-chul Ahn, Sun-Hwa Yang, Hyung-eun Ahn
  • Patent number: 8119095
    Abstract: The present invention relates to a composite sintering materials using a carbon nanotube (including carbide nano particles, hereinafter the same) and a manufacturing method thereof, the method comprises the steps of: combining or generating carbon nanotubes in metal powers, a compacted product, or a sintered product; growing and alloying the carbon nanotubes by compacting or sintering the metal powers, the compacted product, or the sintered product; and strengthening the mechanical characteristics by repeatedly performing the sintering process and the combining process or the generating process of the carbon nanotubes.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: February 21, 2012
    Assignee: C & Tech Co., Ltd.
    Inventors: Sang-chul Ahn, Sun-hwa Yang, Hyeung-eun Ahn
  • Publication number: 20110314192
    Abstract: A UPnP control point for searching a UPnP device based on the location, includes a communication unit that performs communications with UPnP devices on a UPnP network; a memory unit that parses an extensible markup language (XML) description file of a UPnP device, received through the communication unit, and stores UPnP device information containing location information of the UPnP device as a list; and a control unit that provides the stored location information of the UPnP device using location information of the memory unit and generates a control command for a UPnP device selected by a user.
    Type: Application
    Filed: July 28, 2010
    Publication date: December 22, 2011
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Chul AHN, Yong-Moo KWON, Kiwoong LIM
  • Patent number: 7978075
    Abstract: Provided is an apparatus for recognizing an activity of daily living (ADL). The apparatus includes a radio frequency identification (RFID) reader for reading the information of an RFID tag to recognize a motion object, a motion detector attached on a moving subject for acquiring acceleration information and recognizing a motion characteristic, and a controller for receiving information on the motion object from the RFID reader and information on the motion characteristic from the motion detector and then recognizing an ADL.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: July 12, 2011
    Assignees: Korea Institute of Science and Technology, Electronics and Telecommunications Research Institute
    Inventors: Ig Jae Kim, Hyoung Gon Kim, Sang Chul Ahn