Patents by Inventor Cheon-In Oh

Cheon-In Oh 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: 20150181112
    Abstract: A preprocessing apparatus of recognizing a user. The preprocessing apparatus may include an image acquisition controller to compare a received filmed image and a pre-registered background image, and update the pre-registered background image based on whether light is changed; a Modified Census Transform (MCT) transformer to transform the pre-registered background image or the updated background image through an MCT method to generate an MCT background image, and transform the received filmed image through the MCT method to generate an MCT filmed image; and a difference image processor to differentiate the MCT filmed image and the MCT background image to generate a difference image.
    Type: Application
    Filed: May 12, 2014
    Publication date: June 25, 2015
    Inventors: Cheon-In OH, Han-Kyu LEE, Young-Ho JEONG, Jin-Woo HONG
  • Patent number: 8887186
    Abstract: Provided are an analysis method and system for audience rating and advertisement effects based on viewing behavior recognition including a method of recognizing a viewer on the basis of image recognition through a camera and efficiently collecting data and a method of transmitting collected data on the basis of viewer recognition to an audience rating and advertisement effect measurement server. The present invention includes a viewing behavior measurement device configured to receive a viewer image obtained by imaging one or more viewers who are viewing broadcast content, recognize the one or more viewers from the received viewer image to generate viewing behavior information, and deliver the generated viewing behavior information, and an advertisement effect measurement server configured to analyze an advertisement effect for each viewer on the basis of the received viewing behavior information and generate and deliver an advertisement effect measurement result.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: November 11, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Cheon-In Oh, Han-Kyu Lee, Young-Ho Jeong, Jin-Woo Hong
  • Patent number: 8774033
    Abstract: In a vehicle communication system, a frame transmitting apparatus gives a transmission opportunity to an emergency frame received from an upper layer without EDCA (Enhanced Distributed Channel Access), and gives a transmission opportunity to a generic frame received from an upper layer through EDCA.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: July 8, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Cheon In Oh, Kyeong-Soo Han, Hyun Seo Oh, Hyun Kyun Choi
  • Patent number: 8675688
    Abstract: Provided are an apparatus and method of transmitting and receiving a wake-up signal. The method of receiving a wake-up signal includes the following: operating a radio frequency (RF) receiving unit that receives a wireless signal through an antenna during an SFD detecting time, wherein the SFD detecting time is shorter than a predetermined SFD detecting time period, according to the predetermined SFD detecting time period and detecting a start of frame delimiter (SFD) to indicate that the received wireless signal is a wake-up signal to wake-up a node in a sleep mode; and detecting the wake-up signal by continuously operating the RF receiving unit when the SFD is detected. Power consumption that is used to receive the wake-up signal can be reduced.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: March 18, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Cheon In Oh, Ho Yong Kang, Kyo Hoon Son, Nae Soo Kim
  • Publication number: 20140053173
    Abstract: Provided are an analysis method and system for audience rating and advertisement effects based on viewing behavior recognition including a method of recognizing a viewer on the basis of image recognition through a camera and efficiently collecting data and a method of transmitting collected data on the basis of viewer recognition to an audience rating and advertisement effect measurement server. The present invention includes a viewing behavior measurement device configured to receive a viewer image obtained by imaging one or more viewers who are viewing broadcast content, recognize the one or more viewers from the received viewer image to generate viewing behavior information, and deliver the generated viewing behavior information, and an advertisement effect measurement server configured to analyze an advertisement effect for each viewer on the basis of the received viewing behavior information and generate and deliver an advertisement effect measurement result.
    Type: Application
    Filed: April 26, 2013
    Publication date: February 20, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Cheon-In OH, Han-Kyu LEE, Young-Ho JEONG, Jin-Woo HONG
  • Publication number: 20120127874
    Abstract: In a vehicle communication system, a frame transmitting apparatus gives a transmission opportunity to an emergency frame received from an upper layer without EDCA (Enhanced Distributed Channel Access), and gives a transmission opportunity to a generic frame received from an upper layer through EDCA.
    Type: Application
    Filed: September 28, 2011
    Publication date: May 24, 2012
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Cheon In OH, Kyeong-Soo HAN, Hyun Seo OH, Hyun Kyun CHOI
  • Patent number: 7804918
    Abstract: An apparatus for independently extracting streams from a hierarchically-modulated signal and performing a soft-decision, and a method thereof are provided. The apparatus includes: a synchronizing unit for receiving a hierarchically-modulated signal configured of an I-channel signal and a Q-channel signal from an external device and performing a synchronizing process on the received signal; a divaricating unit 410 for divaricating the synchronized signal configured of the I-channel signal and the Q-channel signal from the synchronizing unit; a high priority (HP) stream extracting and soft-decision unit for extracting a HP stream from one of the divaricated signals, and performing a soft-decision; a processing unit for processing the other of the divaricated signals to allow constellation points to be distinguished; and a low priority (LP) stream extracting and soft-decision unit for extracting a LP stream from the processed signal from the processing unit and performing a soft-decision.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: September 28, 2010
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae-Hoon Kim, Seung-Hyun Choi, Cheon-In Oh, Pan-Soo Kim, Dae-Ig Chang
  • Publication number: 20100150042
    Abstract: Provided are an apparatus and method of transmitting and receiving a wake-up signal. The method of receiving a wake-up signal includes the following: operating a radio frequency (RF) receiving unit that receives a wireless signal through an antenna during an SFD detecting time, wherein the SFD detecting time is shorter than a predetermined SFD detecting time period, according to the predetermined SFD detecting time period and detecting a start of frame delimiter (SFD) to indicate that the received wireless signal is a wake-up signal to wake-up a node in a sleep mode; and detecting the wake-up signal by continuously operating the RF receiving unit when the SFD is detected. Power consumption that is used to receive the wake-up signal can be reduced.
    Type: Application
    Filed: November 6, 2009
    Publication date: June 17, 2010
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Cheon In Oh, Ho Yong Kang, Kyo Hoon Son, Nae Soo Kim
  • Publication number: 20080137775
    Abstract: Provided are a method and apparatus for hierarchical modulation and demodulation in a Digital Multimedia Broadcasting (DMB) system. The method for hierarchical modulation in a digital broadcast signal transmitter includes the steps of: receiving a first broadcast signal and a second broadcast signal from outside, and encoding the broadcast signals by a first method and a second method, respectively; synthesizing the encoded first and second broadcast signals; determining a modulation point using a constellation diagram of an I-Q plane corresponding to the synthesized signal; and hierarchically phase-shift modulating the synthesized signal using the determined modulation point. Here, in the I-Q plane, the modulation point is deviated by a predetermined deviation angle from a phase axis passing through a modulation point of the first broadcast signal and an origin of the I-Q plane.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 12, 2008
    Inventors: Tae Hoon KIM, In Ki LEE, Seung Hyun CHOI, Cheon In OH, Dae Ig CHANG, Ho Jin LEE, Sung Hoon LEE, Goon Seop LEE, Dong Hahk LEE, Jae Hwang YU
  • Publication number: 20070104294
    Abstract: An apparatus for independently extracting streams from a hierarchically-modulated signal and performing a soft-decision, and a method thereof are provided. The apparatus includes: a synchronizing unit for receiving a hierarchically-modulated signal configured of an I-channel signal and a Q-channel signal from an external device and performing a synchronizing process on the received signal; a divaricating unit 410 for divaricating the synchronized signal configured of the I-channel signal and the Q-channel signal from the synchronizing unit; a high priority (HP) stream extracting and soft-decision unit for extracting a HP stream from one of the divaricated signals, and performing a soft-decision; a processing unit for processing the other of the divaricated signals to allow constellation points to be distinguished; and a low priority (LP) stream extracting and soft-decision unit for extracting a LP stream from the processed signal from the processing unit and performing a soft-decision.
    Type: Application
    Filed: September 11, 2006
    Publication date: May 10, 2007
    Inventors: Tae-Hoon Kim, Seung-Hyun Choi, Cheon-In Oh, Pan-Soo Kim, Dae-Ig Chang