Patents by Inventor Heesung Chae

Heesung Chae 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: 20190132538
    Abstract: An analog to digital converting circuit includes a correlated double sampling circuit (CDS) that compares a pixel signal with a ramp signal, and outputs a comparison signal, a timing amplifier that increases an active time of the comparison signal ā€œNā€ times, and outputs an extended signal, wherein the ā€œNā€ is a positive integer, and a counter that outputs a digital signal corresponding to the pixel signal in response to the extended signal and a first clock signal.
    Type: Application
    Filed: June 4, 2018
    Publication date: May 2, 2019
    Inventors: Yunhong Kim, Kyung-Min Kim, Heesung Chae
  • Patent number: 9712772
    Abstract: An image sensor is provided. The image sensor includes a pixel array having active pixel sensors arranged in rows and columns; a correlated double sampler that converts sensing signals transferred from pixels sensors selected from the active pixel sensors to correlated double sampling signals and outputs a conversion result by column; and an analog-to-digital converter that converts the correlated double sampling signals corresponding to plural columns to digital signals using a global code. The analog-to-digital converter includes a column shared operator that performs a digital conversion operation on correlated double sampling signals corresponding to two or more columns of the plural columns.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: July 18, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jinwoo Kim, Kyung-Min Kim, Jungho Lee, Heesung Chae, Seunghoon Jung
  • Publication number: 20150049232
    Abstract: An image sensor is provided. The image sensor includes a pixel array having active pixel sensors arranged in rows and columns; a correlated double sampler that converts sensing signals transferred from pixels sensors selected from the active pixel sensors to correlated double sampling signals and outputs a conversion result by column; and an analog-to-digital converter that converts the correlated double sampling signals corresponding to plural columns to digital signals using a global code. The analog-to-digital converter includes a column shared operator that performs a digital conversion operation on correlated double sampling signals corresponding to two or more columns of the plural columns.
    Type: Application
    Filed: August 14, 2014
    Publication date: February 19, 2015
    Inventors: Jinwoo KIM, Kyung-Min KIM, Jungho LEE, Heesung CHAE, Seunghoon JUNG
  • Publication number: 20120215383
    Abstract: A security control service system includes: a track security apparatus for traveling along a track installed in a place to be secured, and obtaining and transmitting security information to a security control apparatus; an autonomous mobile robot apparatus for traveling along the track together with the track security apparatus or freely traveling in the place to be secured, and obtaining and transmitting security information to the security control apparatus; and the security control apparatus for transmitting a control command for security control to the track security apparatus or the autonomous mobile robot apparatus after analyzing the security information.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 23, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Ho sub YOON, Jae Yeon LEE, Do-Hyung KIM, Hye Jin KIM, Kyu Dae BAN, Youngwoo YOON, Woo-han YUN, Jae Hong KIM, Joo Chan SOHN, Heesung CHAE
  • Patent number: 8027515
    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: Grant
    Filed: December 14, 2005
    Date of Patent: September 27, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae Yeong Lee, Heesung Chae, Won Pil Yu, Young Jo Cho
  • Patent number: 7974302
    Abstract: Provided is a distributed and asynchronous implicit token carrier sense multiple access/collision avoidance (CSMA/CA) protocol guaranteeing quality of service for both real time and non-real time traffic. The implicit token CSMA/CA protocol allocates a band in an entire bandwidth to voice traffic and allows the remaining bands to be used for data traffic. The implicit token CSMA/CA protocol includes applying a token passing protocol to transmit voice traffic in real time by having a band in an entire bandwidth allocated using a predetermined data frame and applying a CSMA/CA mechanism to transmit data traffic in non-real time by employing remaining bands not allocated to the voice traffic using another predetermined data frame.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: July 5, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Man Han, You Hyeon Jeong, Heesung Chae, Dong Won Kim, Jun Hwa Lee
  • Publication number: 20100027558
    Abstract: Provided is a distributed and asynchronous implicit token carrier sense multiple access/collision avoidance (CSMA/CA) protocol guaranteeing quality of service for both real time and non-real time traffic. The implicit token CSMA/CA protocol allocates a band in an entire bandwidth to voice traffic and allows the remaining bands to be used for data traffic. The implicit token CSMA/CA protocol includes applying a token passing protocol to transmit voice traffic in real time by having a band in an entire bandwidth allocated using a predetermined data frame and applying a CSMA/CA mechanism to transmit data traffic in non-real time by employing remaining bands not allocated to the voice traffic using another predetermined data frame.
    Type: Application
    Filed: October 13, 2009
    Publication date: February 4, 2010
    Inventors: Tae Man HAN, You Hyeon JEONG, Heesung CHAE, Dong Won KIM, Jun Hwa LEE
  • Patent number: 7643509
    Abstract: Provided is a distributed and asynchronous implicit token carrier sense multiple access/collision avoidance (CSMA/CA) protocol guaranteeing quality of service for both real time and non-real time traffic. The implicit token CSMA/CA protocol allocates a band in an entire bandwidth to voice traffic and allows the remaining bands to be used for data traffic. The implicit token CSMA/CA protocol includes applying a token passing protocol to transmit voice traffic in real time by having a band in an entire bandwidth allocated using a predetermined data frame and applying a CSMA/CA mechanism to transmit data traffic in non-real time by employing remaining bands not allocated to the voice traffic using another predetermined data frame.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: January 5, 2010
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Man Han, You Hyeon Jeong, Heesung Chae, Dong Won Kim, Jun Hwa Lee
  • 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: 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: 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
  • Publication number: 20050135408
    Abstract: Provided is a distributed and asynchronous implicit token carrier sense multiple access/collision avoidance (CSMA/CA) protocol guaranteeing quality of service for both real time and non-real time traffic. The implicit token CSMA/CA protocol allocates a band in an entire bandwidth to voice traffic and allows the remaining bands to be used for data traffic. The implicit token CSMA/CA protocol includes applying a token passing protocol to transmit voice traffic in real time by having a band in an entire bandwidth allocated using a predetermined data frame and applying a CSMA/CA mechanism to transmit data traffic in non-real time by employing remaining bands not allocated to the voice traffic using another predetermined data frame.
    Type: Application
    Filed: August 30, 2004
    Publication date: June 23, 2005
    Inventors: Tae Han, You Jeong, Heesung Chae, Dong Kim, Jun Lee