Patents by Inventor Tae Choi

Tae Choi 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: 8384271
    Abstract: A multilayer electroactive polymer actuator and a method of manufacturing the same. The multilayer electroactive polymer actuator is divided into an actuating area and a non-actuating area. A plurality of driving electrodes, each formed on a side of the respective polymer layer to correspond to the actuating area. A plurality of extension electrodes connected to the driving electrodes and a common electrode for vertically connecting the extension electrodes are formed to correspond to the non-actuating area. A via hole is formed through the plurality of non-actuating layers and has a diameter which increases in a stepwise manner upwards. The common electrode is formed in the via hole. The driving electrode includes an alloy of aluminum and copper. The extension electrode is formed of material having a small reactivity with respect to laser as compared to the reactivity of the polymer layer.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: February 26, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Oh Kwon, Seung-Tae Choi
  • Patent number: 8379700
    Abstract: The present invention features a digital data communications system for transmitting a voice or digital data between a terminal mounted in a vehicle and an external server, including a MDOV modem configured to modulate the digital data to include frequency characteristics of vowel and consonant of the voice; and a transceive module configured to transceive the modulated signal through a voice channel.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: February 19, 2013
    Assignee: Hyundai Motor Company
    Inventors: Yu Tae Choi, Young Seok Kim
  • Patent number: 8373751
    Abstract: The present invention provides an apparatus for measuring a location and a distance of an object by using a camera including: a camera module for photographing an external image; a parameter setup unit for setting internal and external parameters of the camera module; an image processor unit for receiving a captured image of an image photographed from the camera module, extracting a target object within the captured image, and extracting specific point coordinates of the extracted target object; and a location and distance calculating unit for calculating three-dimensional object location information in a two-dimensional camera coordinate system through the internal and external parameters of the camera module and coordinates of the target object, and calculating distance information from the location information of the object.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: February 12, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Kyu Bum Han, Won Tae Choi, Young Jin Cho
  • Patent number: 8368759
    Abstract: There are provided a landmark for recognizing a position of a mobile robot moving in an indoor space and an apparatus and method for recognizing the position of the mobile robot by using the landmark. The landmark includes a position recognition part formed of a mark in any position and at least two marks on an X axis and Y axis centered on the mark and further includes an area recognition part formed of a combination of a plurality of marks to distinguish an individual landmark from others. The apparatus may obtain an image of the landmark by an infrared camera, detect the marks forming the landmark, and detect precise position and area information of the mobile robot from the marks.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: February 5, 2013
    Assignee: Research Institute of Industrial Science & Technology
    Inventors: Ki-Sung Yoo, Chin-Tae Choi, Hee-Don Jeong
  • Publication number: 20130011060
    Abstract: An apparatus and method for removing red-eye in a 2D image, which can remove red-eye more naturally and apply a gain for a real-time correction on input pixels by differently performing a correction degree according to positions of pixels included in red-eye.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Kang Joo KIM, Bong Soon Kang, Suk Chan Kim, Won Woo Jang, Sung Jin Lee, Jung Hwan Park, Hak Sun Kim, Won Tae Choi, Boo Dong Kwak
  • Patent number: 8343367
    Abstract: Disclosed is a method of forming a continuous channel for gas discharge in the surface of a casting roll for twin roll strip casting, and particularly, a method of forming a continuous channel for gas discharge on the surface of a casting roll for twin roll strip casting, suitable for the formation of dimples on the surface of a casting roll for a twin roll strip caster, which includes applying a photoresist on the entire surface of a casting roll, conducting patterning on the applied photoresist, developing the surface of the casting roll, subjected to the patterning, and etching the metal surface of the casting roll, exposed in the developing, and which prevents the generation of dents, enables the manufacture of a cast product having no defects, and realizes wide applicability not only to high Mn steel but also to types of casting steel capable of generating dents or similar defects due to a large amount of volatile gas.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: January 1, 2013
    Assignee: POSCO
    Inventors: Ju-Tae Choi, Man-Jin Ha, Hee-Kyung Moon
  • Patent number: 8334585
    Abstract: An LED package and a fabrication method thereof are provided. The LED package includes an upper metal plate having an LED-receiving hole therein; a lower metal plate disposed under the upper metal plate; and an insulator which the upper metal plate and the lower metal plate from each other. A portion of the lower metal plate is exposed via the LED-receiving hole and an LED is mounted on the exposed portion of the lower metal plate and is electrically connected to both of the upper and lower metal plates. A protective cover encloses and protects exposed surfaces of the upper and lower metal plates.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: December 18, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-hwan Kwon, Kyu-ho Shin, Soon-cheol Kweon, Chang-youl Moon, Arthur Darbinian, Seung-tae Choi, Su-ho Shin
  • Patent number: 8313197
    Abstract: A pattern projecting apparatus usable with a three-dimensional imaging apparatus includes a light generator which emits a light beam, and a pattern adjusting unit disposed in front of the light generator. The pattern adjusting unit forms a projection pattern on an object, and adjusts a focus of the light beam emitted from the light generator.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: November 20, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-yub Lee, Seung-wan Lee, Woon-bae Kim, Seung-tae Choi
  • Publication number: 20120290966
    Abstract: Provided are a method and a mobile terminal for simultaneously displaying at least two application windows on a display unit of a mobile terminal. The method may include displaying a first application window associated with a first application on an entire display area of the display unit, receiving a multi_screen mode initiation input from a user, dividing a display area of the display unit into at least two display areas including a first display area and a second display area in response to the multi_screen mode initiation input, and displaying the first application window and a second application window on the at least two display areas, respectively, in a multi_screen mode.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 15, 2012
    Inventors: Haeng-Suk CHAE, Kyoung-Tae CHOI
  • Publication number: 20120289290
    Abstract: Provided are a mobile terminal and a method for transferring objects from a source application window to a destination application window, which are simultaneously displayed on a display unit of a mobile terminal. The method may include displaying the first application window and the second application window simultaneously on the display unit in response to a multi_screen mode initiation input, and transferring at least one of a portion of and an entire object in one of the first application window and the second application window to another application window in response to an object transferring mode initiation input.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 15, 2012
    Inventors: Haeng-Suk CHAE, Kyoung-Tae CHOI
  • Patent number: 8306320
    Abstract: A Two-Dimensional (2D) image segmentation apparatus for segmenting pixels of a progressive input 2D image includes a group information storing unit storing information of pixel groups including a plurality of adjacent pixels; a pixel determining unit determining coordinates of an input pixel, and determining whether the input pixel is an effective pixel for segmentation; a group scanning unit scanning a adjacent pixel group disposed in a scan range preset from the effective pixel in the group storing unit when the input pixel is determined as the effective pixel by the pixel determining unit; and a group information updating unit updating information of a pixel group stored in the group information storing unit according to whether there is the scanned adjacent pixel group and a pixel group including an input pixel preceding the effective pixel. Moreover, a method is provided that removes red-eye using area information of a pixel group determined by the segmentation apparatus.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: November 6, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Kang Joo Kim, Bong Soon Kang, Suk Chan Kim, Won Woo Jang, Sung Jin Lee, Jung Hwan Park, Hak Sun Kim, Won Tae Choi, Boo Dong Kwak
  • Patent number: 8300317
    Abstract: Varifocal lens for camera module incorporated in wireless mobile communication device is provided. The varifocal lens includes: a membrane; a frame which is fixed to the membrane and has a receiving hole formed in the middle; a transparent substrate which is fixed to the frame to seal optical fluid received in the receiving hole; one or more actuators to change a curvature of a fluid lens part by bending the circumference of the fluid lens part formed around a central portion of the receiving hole; and a restriction lessening member which is adapted to lessen a restrictive force of an edge of the fluid lens part, is made of a transparent material, has with an area smaller than the fluid lens part to correspond to an inner side of the fluid lens part except the edge of the fluid lens part, and has a larger Young's modulus than the membrane.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: October 30, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-yub Lee, Seung-wan Lee, Woon-bae Kim, Seung-tae Choi
  • Publication number: 20120270652
    Abstract: Disclosed is a system for servicing game streaming, including: a server for servicing streaming game configured to receive game input data and hardware performance information from a user terminal device and service video streaming or merging streaming coupling the video streaming and graphics streaming according to the received performance of the user terminal device; and a database configured to store a background screen and characters for a game streaming service of the server for servicing streaming game.
    Type: Application
    Filed: April 20, 2012
    Publication date: October 25, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung-Soo KIM, Kyoung Ill Kim, Choong Gyoo Lim, Jong Ho Won, Chang Joon Park, Byoung Tae Choi
  • Patent number: 8275202
    Abstract: There is provided a method of grouping pixels in a 2D digital image that assigns labels to regions of objects to differentiate between objects separated in the input image and groups a region of an object having the same label into one group when pattern recognition and image process are performed on the 2D digital image. A method of grouping pixels in a 2d digital image according to an aspect of the invention may include: determining whether a target pixel in an input image is included in a labeling section; determining whether the target pixel is connected to a previous pixel of the target pixel and an upper pixel located adjacent to and above the target pixel to perform a labeling process, and renewing a label table while saving a labeling result in a line memory when the target pixel is included in the labeling section and is a valid pixel including object information; and grouping pixels of the input image using the labeling result and the renewed label table, and renewing a group.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: September 25, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Joo Hyun Kim, Bong Soon Kang, Sung Jin Lee, Hyo Won Jeong, Won Tae Choi, Boo Dong Kwak
  • Publication number: 20120200200
    Abstract: A method of manufacturing a polymer electrode and a polymer actuator employing the polymer electrode, the method including: adhering a shadow mask onto a substrate, forming a hydrophilic electrode pattern on the substrate, coating the hydrophilic electrode pattern of the substrate with a conductive polymer water solution, removing the shadow mask, and drying the conductive polymer water solution, thus forming the polymer electrode. The method may be applied to electrodes disposed on both surfaces of a polymer deformation layer of a polymer actuator.
    Type: Application
    Filed: October 20, 2011
    Publication date: August 9, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyu-dong JUNG, Seung-Tae CHOI
  • Publication number: 20120171392
    Abstract: Provided are an optical film for use in flat panel display (FPD) devices, and a method for manufacturing the same. Particularly, there is provided a method for imparting surface roughness to an optical film, which includes forming dented craters having a radius of curvature of 10 nm-100 ?m on the surface of an optical film obtained by a solution casting process and forming a plateau between one crater and another crater. There is also provided an optical film obtained by the same method.
    Type: Application
    Filed: September 2, 2010
    Publication date: July 5, 2012
    Applicant: SK INNOVATION CO., LTD.
    Inventors: Yong Gyun Cho, Chol Ho Lee, Yoo Seock Hwang, Hyuk Jun Kim, Ki Yup Kim, Sung Ho Son, Ki-Beom Kim, Kwang Jin Chung, Jun Tae Choi
  • Publication number: 20120174034
    Abstract: Apparatus and/or method for providing a user interface in a user equipment. At least one background screen of the user interface may be formed from at least one image. Each of the at least one background screen may be associated with a respective application of the user equipment, and each image of the at least one image may represent a respective content associated with the respective application. Then, when a user input at least one of a predetermined gesture input and a predetermined key input, a main menu which allows the user to select a desired application to be executed may be displayed over a current display screen. When a selection input for selecting the desired application is received from the displayed main menu, the user interface having the background screen formed from the at least one image corresponding to the selected desired application may be displayed.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 5, 2012
    Inventors: Haeng-Suk CHAE, Kyoung-Tae CHOI
  • Patent number: 8213738
    Abstract: A method for eliminating noise from an image generated by an image sensor, includes: setting a group of pixels arranged in a square matrix and including a central pixel intended to eliminate the noise in the image and peripheral pixels arranged around the central pixel; obtaining absolute difference values between a luminance value of the central pixel and a luminance value of the peripheral pixels according to directionalities of the peripheral pixels about the central pixel; comparing the obtained absolute difference values with first critical values to determine a region to which the central pixel belongs; when the determined region is the contour region, eliminating noise of the group of the pixels according to directionality of the contour; and when the determined region is the noise region, eliminating the noise of the group of the pixels according to a noise level of the group of the pixels.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: July 3, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Tae Hyeon Kwon, Hak Sun Kim, Won Tae Choi
  • Patent number: 8208029
    Abstract: A method for calibrating a camera including (a) obtaining a two-dimensional (2D) homography that maps each of parallelograms projected onto two images taken by the camera into a rectangle, wherein the 2D homography is defined as a rectification homography and wherein new cameras that have virtual images are defined as rectified cameras and a new infinite homography is generated between the two rectified cameras, the virtual images being transformed from original images by the rectification homography; (b) obtaining an original infinite homography by using the correlations among the new infinite homography, the rectification homography and the original infinite homography; and (c) obtaining intrinsic camera parameters based on the correlation between the original infinite homography and the intrinsic camera parameters, thereby calibrating the camera.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: June 26, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae Hean Kim, Jin Ho Kim, Byoung Tae Choi
  • Publication number: 20120148099
    Abstract: Disclosed is a method for automatically extracting centroids and features of a spherical object required to measure a flight speed, a flight direction, a rotation speed, and a rotation axis of the spherical object in a system for measuring flight information of the spherical object with a high-speed stereo camera. In order to automatically extract the centroids and the features of the spherical object, the present invention may automatically extract the centroid and the feature by detecting only the pixel of the foreground image including the spherical object generated by excluding the motionless background image from each camera image, sorting the interconnected pixels among the pixels of the detected foreground image into the independent pixel cluster, and then, using, in the extraction of the centroid and the feature, only one pixel cluster having a size similar to the actual spherical object.
    Type: Application
    Filed: December 9, 2011
    Publication date: June 14, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jong Sung KIM, Seong Min Baek, Myung Gyu Kim, Il Kwon Jeong, Byoung Tae Choi