Patents by Inventor Chul Dong LEE

Chul Dong LEE 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: 9671769
    Abstract: An ECU monitoring system includes: an ECU that includes an input interface unit, a computer unit, and an output interface unit; a storage unit that stores a normal input signal and a normal output signal; a comparing unit that calculates a compared difference by comparing the current input signal with a previous input signal stored in the storage unit, and outputs an alarming signal showing the current input signal is abnormal, when the compared difference is out of a predetermined range; and a circulator that receives the output signal, provides the output signal when the output signal is a normal output signal, and provides a normal output signal to the output interface unit, instead of the output signal outputted from the computer in response to the abnormal input signal, when receiving the alarming signal from the comparing unit.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: June 6, 2017
    Assignee: Korea Electronics Technology Institute
    Inventors: Chul Dong Lee, Jae Jin Ko, Sang Hyun Park, Hyo Sub Choi
  • Patent number: 9136945
    Abstract: Provided herein is a communication system and method capable of performing visible light communication and optic networking, the system performing visible light communication with an electronic device inside a vehicle and accessing an optic network inside the vehicle. Accordingly, RF interference and distortion is removed, and thus not effecting use of a wireless device inside the vehicle, thereby reducing malfunction/error of a electronic control device and enabling real time data transceiving in the vehicle.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: September 15, 2015
    Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
    Inventors: Sang Yub Lee, Sang Hyun Park, Hyo Sub Choi, Chul Dong Lee
  • Patent number: 8909412
    Abstract: An apparatus and a method for processing sensor data for a vehicle using an unified data format eXtensible Markup Language in process of data communication between various vehicle sensors and a vehicle application system, which facilitates transmit and receive data processing in terms of a vehicle network of the sensors and the application system are provided.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: December 9, 2014
    Assignee: Korea Electronics Technology Institute
    Inventors: Sang Hyun Park, Soo Young Min, Chul Dong Lee, Jae Jin Ko
  • Publication number: 20140316535
    Abstract: An ECU monitoring system includes: an ECU that includes an input interface unit, a computer unit, and an output interface unit; a storage unit that stores a normal input signal and a normal output signal; a comparing unit that calculates a compared difference by comparing the current input signal with a previous input signal stored in the storage unit, and outputs an alarming signal showing the current input signal is abnormal, when the compared difference is out of a predetermined range; and a circulator that receives the output signal, provides the output signal when the output signal is a normal output signal, and provides a normal output signal to the output interface unit, instead of the output signal outputted from the computer in response to the abnormal input signal, when receiving the alarming signal from the comparing unit.
    Type: Application
    Filed: December 27, 2012
    Publication date: October 23, 2014
    Applicant: Korea Electronics Technology Institute
    Inventors: Chul Dong Lee, Jae Jin Ko, Sang Hyun Park, Hyo Sub Choi
  • Patent number: 8866622
    Abstract: A system and a method for preventing drowsiness are provided. The system for preventing drowsiness calculates brainwaves of a user by receiving a signal around a head of a user without contact, detects a state of the user based on the calculated brainwaves, and performs a necessary function according to the detected state of the user. Thus, convenience is increased when measuring the brainwaves of the driver using the contactless electrodes.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: October 21, 2014
    Assignee: Korean Electronics Technology Institute
    Inventors: Sang-Yub Lee, Hyo-Sub Choi, Chul-Dong Lee, Sang-Hyun Park
  • Patent number: 8681017
    Abstract: A visible light communication apparatus for a vehicle is provided. The visible light communication apparatus for the vehicle includes a vehicle optical receiver for receiving a visible light signal including a tunnel light node ID, a front passing vehicle node ID, and tunnel environment data, from a tunnel light and converting the visible light signal to an electric signal; and a vehicular visible light emitting diode unit arranged to face the optical receiver for converting vehicle speed and location information calculated by counting tunnel light node IDs received over a certain time, to a visible light signal and sending the visible light signal to the tunnel light. Using the vehicular visible light communication apparatus and the tunnel light having the visible light communication function, an efficient vehicular communication system can be built in the tunnel.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: March 25, 2014
    Assignee: Korea Electronics Technology Institute
    Inventors: Sang Yub Lee, Hyo Sub Choi, Chul Dong Lee
  • Publication number: 20140064740
    Abstract: Provided herein is a communication system and method capable of performing visible light communication and optic networking, the system performing visible light communication with an electronic device inside a vehicle and accessing an optic network inside the vehicle. Accordingly, RF interference and distortion is removed, and thus not effecting use of a wireless device inside the vehicle, thereby reducing malfunction/error of a electronic control device and enabling real time data transceiving in the vehicle.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 6, 2014
    Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
    Inventors: Sang Yub Lee, Sang Hyun Park, Hyo Sub Choi, Chul Dong Lee
  • Publication number: 20120139733
    Abstract: A system and a method for preventing drowsiness are provided. The system for preventing drowsiness calculates brainwaves of a user by receiving a signal around a head of a user without contact, detects a state of the user based on the calculated brainwaves, and performs a necessary function according to the detected state of the user. Thus, convenience is increased when measuring the brainwaves of the driver using the contactless electrodes.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 7, 2012
    Inventors: Sang-Yub Lee, Hyo-Sub Choi, Chul-Dong Lee, Sang-Hyun Park
  • Publication number: 20110156925
    Abstract: A visible light communication apparatus for a vehicle is provided. The visible light communication apparatus for the vehicle includes a vehicle optical receiver for receiving a visible light signal including a tunnel light node ID, a front passing vehicle node ID, and tunnel environment data, from a tunnel light and converting the visible light signal to an electric signal; and a vehicular visible light emitting diode unit arranged to face the optical receiver for converting vehicle speed and location information calculated by counting tunnel light node IDs received over a certain time, to a visible light signal and sending the visible light signal to the tunnel light. Using the vehicular visible light communication apparatus and the tunnel light having the visible light communication function, an efficient vehicular communication system can be built in the tunnel.
    Type: Application
    Filed: December 28, 2010
    Publication date: June 30, 2011
    Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
    Inventors: Sang Yub LEE, Hyo Sub CHOI, Chul Dong LEE
  • Publication number: 20110161804
    Abstract: An apparatus and a method for processing sensor data for a vehicle using an unified data format eXtensible Markup Language in process of data communication between various vehicle sensors and a vehicle application system, which facilitates transmit and receive data processing in terms of a vehicle network of the sensors and the application system are provided.
    Type: Application
    Filed: December 24, 2010
    Publication date: June 30, 2011
    Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
    Inventors: Sang Hyun PARK, Soo Young MIN, Chul Dong Lee, Jae Jin KO