Patents by Inventor Chul Hee Kang

Chul Hee Kang 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: 11967269
    Abstract: A scan driver includes: a first transistor having a first electrode coupled to an output scan line, a second electrode coupled to a first power line, and a gate electrode coupled to a first node; a second transistor having a first electrode coupled to a first clock line, a second electrode coupled to the output scan line, and a gate electrode coupled to a second node; a third transistor having a first electrode coupled to the first node, a second electrode coupled to a first input scan line, and a gate electrode coupled to a second clock line; and a fourth transistor having a first electrode coupled to the second node and a second electrode and a gate electrode, which are coupled to a second input scan line, wherein the first input scan line and the second input scan line are different from each other.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: April 23, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chul Kyu Kang, Sung Hwan Kim, Soo Hee Oh, Dong Sun Lee, Sang Moo Choi
  • Patent number: 11961223
    Abstract: An apparatus for predicting performance of a wheel in a vehicle: includes a learning device that generates a latent space for a plurality of two-dimensional (2D) wheel images based on a convolutional autoencoder (CAE), extracts a predetermined number of the plurality of 2D wheel images from the latent space, and learns a dataset having the plurality of 2D wheel images and performance values corresponding to the plurality of 2D wheel images; and a controller that predicts performance for the plurality of 2D wheel images based on a performance prediction model obtained by the learning device.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: April 16, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, SOOKMYUNG WOMEN'S UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Jong Ho Park, Chang Gon Kim, Chul Woo Jung, Sang Min Lee, Min Kyoo Kang, Ji Un Lee, Kwang Hyeon Hwang, Nam Woo Kang, So Young Yoo, Seong Sin Kim, Sung Hee Lee
  • Publication number: 20210107956
    Abstract: Polypeptides which comprises a plurality of luminescent metal binding sites and constructs comprising the polypeptides and bound luminescent metals are provided. When the constructs are exposed to suitable wavelengths of energy, the bound luminescent metals emit characteristic wavelengths of light. Thus, the constructs are used as luminescent tracking molecules e.g. as probes, markers, reporters, etc., and to deliver cargo to targeted cells or tissues.
    Type: Application
    Filed: April 3, 2018
    Publication date: April 15, 2021
    Applicant: WASHINGTON STATE UNIVERSITY
    Inventors: James Alan BROZIK, Chul-Hee KANG
  • Patent number: 9042284
    Abstract: There are provided an apparatus and a method for establishing a contention window in a WiMedia wireless network. The contention window establishing apparatus includes: a parsing unit extracting the number of devices that intend to transmit data from a beacon received during a beacon period and an access category (AC) of each device; a calculation unit calculating a transmission probability of each access category (AC) on the basis of the extracted number of devices; and a contention window establishing unit establishing a contention window for each access category (AC) on the basis of the calculated transmission probability, to reduce contentions among the devices and decrease data transmission latency time, thereby maximizing efficiency in data transmission latency time.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: May 26, 2015
    Assignees: Samsung Electro-Mechanics Co., Ltd., Korea University Industrial & Academic Collaboration Foundation
    Inventors: Joun Sup Park, Chul Gyun Park, Chul Hee Kang, Sang Heon Pack, Hyun Hee Park
  • Publication number: 20140003412
    Abstract: There are provided an apparatus and a method for establishing a contention window in a WiMedia wireless network. The contention window establishing apparatus includes: a parsing unit extracting the number of devices that intend to transmit data from a beacon received during a beacon period and an access category (AC) of each device; a calculation unit calculating a transmission probability of each access category (AC) on the basis of the extracted number of devices; and a contention window establishing unit establishing a contention window for each access category (AC) on the basis of the calculated transmission probability, to reduce contentions among the devices and decrease data transmission latency time, thereby maximizing efficiency in data transmission latency time.
    Type: Application
    Filed: August 30, 2013
    Publication date: January 2, 2014
    Applicants: Korea University Industrial & Academic Collaboration Foundation, SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Juon Sup Park, Chul Gyun Park, Chul Hee Kang, Sang Heon Pack, Hyun Hee Park
  • Patent number: 8553600
    Abstract: There are provided an apparatus and a method for establishing a contention window in a WiMedia wireless network. The contention window establishing apparatus includes: a parsing unit extracting the number of devices that intend to transmit data from a beacon received during a beacon period and an access category (AC) of each device; a calculation unit calculating a transmission probability of each access category (AC) on the basis of the extracted number of devices; and a contention window establishing unit establishing a contention window for each access category (AC) on the basis of the calculated transmission probability, to reduce contentions among the devices and decrease data transmission latency time, thereby maximizing efficiency in data transmission latency time.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: October 8, 2013
    Assignees: Samsung Electro-Mechanics Co., Ltd., Korea University Industrial & Academic Collaboration Foundation
    Inventors: Joun Sup Park, Chul Gyun Park, Chul Hee Kang, Sang Heon Pack, Hyun Hee Park
  • Patent number: 8509197
    Abstract: A media access control method in a wireless network is provided. Each of devices in the wireless network determines one of a plurality of beacon slots within a beacon period as a beacon slot of the device. The devices in the wireless network determine a data transmission order in accordance with the slot numbers of the beacon slots of the devices in a reserved period of a data transmission period. Data is transmitted in the unreserved period in accordance with the determined data transmission order.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: August 13, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Chul Gyun Park, Chul Hee Kang, Sang Heon Pack, Hyun Hee Park, Joun Sup Park
  • Publication number: 20120076074
    Abstract: There are provided an apparatus and a method for establishing a contention window in a WiMedia wireless network. The contention window establishing apparatus includes: a parsing unit extracting the number of devices that intend to transmit data from a beacon received during a beacon period and an access category (AC) of each device; a calculation unit calculating a transmission probability of each access category (AC) on the basis of the extracted number of devices; and a contention window establishing unit establishing a contention window for each access category (AC) on the basis of the calculated transmission probability, to reduce contentions among the devices and decrease data transmission latency time, thereby maximizing efficiency in data transmission latency time.
    Type: Application
    Filed: April 22, 2011
    Publication date: March 29, 2012
    Applicants: Korea University Industrial & Academic Collaboration Foundation, SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Joun Sup PARK, Chul Gyun PARK, Chul Hee KANG, Sang Heon PACK, Hyun Hee PARK
  • Patent number: 8144604
    Abstract: A method and system for establishing multiple channels between nodes each having a single radio interface in a mesh network supporting multiple channels are provided. Each node in the mesh network initially generates a neighbor node table, taking into account at least one traffic channel temporarily established for data transmission to a neighbor node. The neighbor node table is updated when a traffic channel is established for data transmission to the neighbor node, and the neighbor node table is updated according to channel use information of the neighbor node received from the neighbor node or channel use information of a node two hops away.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: March 27, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Gon Choi, Jung-Ho Kim, Jae-Hoon Kim, Ji-Hoon Lee, Yong-Sung Roh, Shubhranshu Singh, Chul-Hee Kang, Joo-Sang Yoon
  • Patent number: 8014285
    Abstract: A method for relaying received data by a relay node in a sensor network that includes a sink node, a source node for collecting and transmitting data requested by the sink node, and the relay node for relaying the data transmitted from the source node to the sink node. The relay node determines whether the source node that transmits the data is a previously identified source node, stores the data in a buffer and forwards the data to a neighbor node when the source node transmitting the data is the previously identified source node according to the determination. The data is managed based on the relay node having the buffer, rather than the source node and the sink node as in the related art. Further, the data error can be promptly handled.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: September 6, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-sang Yoon, Chul-hee Kang, Ji-hoon Lee
  • Publication number: 20110158220
    Abstract: A media access control method in a wireless network is provided. Each of devices in the wireless network determines one of a plurality of beacon slots within a beacon period as a beacon slot of the device. The devices in the wireless network determine a data transmission order in accordance with the slot numbers of the beacon slots of the devices in a reserved period of a data transmission period. Data is transmitted in the unreserved period in accordance with the determined data transmission order.
    Type: Application
    Filed: July 20, 2010
    Publication date: June 30, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chul Gyun PARK, Chul Hee KANG, Sang Heon PACK, Hyun Hee PARK, Joun Sup PARK
  • Patent number: 7787429
    Abstract: A method and apparatus for establishing a path in a wireless network are provided where the method includes receiving location information about a first neighbor node and a second neighbor node, the first neighbor node being located within a range of a first hop from a source node, the second neighbor node being located within a range of a second hop from the source node, determining a direction of a point where the second neighbor node is located, based on the source node, by using the received location information; detecting a particular second neighbor node having a same direction of a point where a destination node is located, based on the source node, and limitedly establishing a path via the detected second neighbor node, when the source node establishes a path for transmitting predetermined data to the destination node.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: August 31, 2010
    Assignees: Samsung Electronics Co., Ltd., Korea University Industrial & Academic Collaboration Foundation
    Inventors: Paul Barom Jeon, Jun Hyeong Kim, Sang Do Park, Chul Hee Kang, Sun Shin An, Won Keun Kong, Joo Sang Youn
  • Publication number: 20080186869
    Abstract: A method and apparatus for establishing a path in a wireless network are provided where the method includes receiving location information about a first neighbor node and a second neighbor node, the first neighbor node being located within a range of a first hop from a source node, the second neighbor node being located within a range of a second hop from the source node, determining a direction of a point where the second neighbor node is located, based on the source node, by using the received location information; detecting a particular second neighbor node having a same direction of a point where a destination node is located, based on the source node, and limitedly establishing a path via the detected second neighbor node, when the source node establishes a path for transmitting predetermined data to the destination node.
    Type: Application
    Filed: July 10, 2007
    Publication date: August 7, 2008
    Inventors: Paul Braom Jeon, Jun Hyeong Kim, Sang Do Park, Chul Hee Kang, Sun Shin An, Won Keun Kong, Joo Sang Youn
  • Patent number: 7277390
    Abstract: A protocol processing apparatus and method in a mobile communication system operates a transmitting end according to whether transmission errors occur in a wireless section in consideration of conditions of the wireless section. A TCP processing apparatus and method of a base transceiver subsystem (BTS) in a mobile communication system can operate a TCP sending end in a persist or congestion override mode by setting a window size of the TCP sending end as ‘0’ if an Ack is not arrived from a TPC receiving end for a round trip time of a wireless link. Preferred embodiments of the present invention can reduce or prevent TCP performance degradation caused by congestion avoidance and control by preventing the TCP sending end from performing congestion avoidance and control by packet loss in the wireless link section. Also, the BTS updates the round trip time (RTT) of the wireless link when the Ack is arrived from the TCP receiving end for the RTT of the wireless link.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: October 2, 2007
    Assignee: LG Nortel, Co., Ltd.
    Inventor: Chul-Hee Kang
  • Publication number: 20060256737
    Abstract: A method and system for establishing multiple channels between nodes each having a single radio interface in a mesh network supporting multiple channels are provided. Each node in the mesh network initially generates a neighbor node table, taking into account at least one traffic channel temporarily established for data transmission to a neighbor node. The neighbor node table is updated when a traffic channel is established for data transmission to the neighbor node, and the neighbor node table is updated according to channel use information of the neighbor node received from the neighbor node or channel use information of a node two hops away.
    Type: Application
    Filed: May 11, 2006
    Publication date: November 16, 2006
    Inventors: Young-Gon Choi, Jung-Ho Kim, Jae-Hoon Kim, Ji-Hoon Lee, Yong-Sung Roh, Shubhranshu Singh, Chul-Hee Kang, Joo-Sang Yoon
  • Publication number: 20060153154
    Abstract: A method for relaying received data by a relay node in a sensor network that includes a sink node, a source node for collecting and transmitting data requested by the sink node, and the relay node for relaying the data transmitted from the source node to the sink node. The relay node determines whether the source node that transmits the data is a previously identified source node, stores the data in a buffer and forwards the data to a neighbor node when the source node transmitting the data is the previously identified source node according to the determination. The data is managed based on the relay node having the buffer, rather than the source node and the sink node as in the related art. Further, the data error can be promptly handled.
    Type: Application
    Filed: December 6, 2005
    Publication date: July 13, 2006
    Inventors: Joo-sang Yoon, Chul-hee Kang, Ji-hoon Lee
  • Patent number: 6892220
    Abstract: An apparatus and method for checking a link validity in a computer network, wherein, for the linking and referencing from one multimedia document to a different multimedia document in the computer network, desired information of the different multimedia document, such as last modified timestamp information indicative of a last modification time of the different multimedia document and latest version information of the different multimedia document, are stored in a validity check field, thereby assuring a link consistency. Therefore, the number of system errors can be cost-effectively reduced when referencing a multimedia document, and the reliability of searching and browsing can be increased.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: May 10, 2005
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Sang Hoon Seol, Sang Wook Oh, Chul Hee Kang
  • Publication number: 20040110499
    Abstract: A flow control apparatus for a mobile communication system includes a traffic type recognition module which interfaces with an upper layer and determines a traffic type of data from the upper layer, a flow control module which controls flow of the data based on the traffic type determined by the traffic type recognition module, and a lower layer interface module which allows the flow control apparatus to communicate the data with an AAL5 Adaptation Layer. The traffic type recognition module delivers the data to the flow control module when the traffic type of the data is a loss sensitive type and directly transfer the data to the AAL5 when the traffic type of the data is a real time sensitive type. Also, a sliding window control algorithm may be used to control the transmission/reception of data based on, for example, a voice-data ratio.
    Type: Application
    Filed: March 20, 2003
    Publication date: June 10, 2004
    Inventors: Chul-Hee Kang, Sun Ju Lim
  • Publication number: 20030117974
    Abstract: A protocol processing apparatus and method in a mobile communication system operates a transmitting end according to whether transmission errors occur in a wireless section in consideration of conditions of the wireless section. A TCP processing apparatus and method of a base transceiver subsystem (BTS) in a mobile communication system can operate a TCP sending end in a persist or congestion override mode by setting a window size of the TCP sending end as ‘0’ if an Ack is not arrived from a TPC receiving end for a round trip time of a wireless link. Preferred embodiments of the present invention can reduce or prevent TCP performance degradation caused by congestion avoidance and control by preventing the TCP sending end from performing congestion avoidance and control by packet loss in the wireless link section. Also, the BTS updates the round trip time (RTT) of the wireless link when the Ack is arrived from the TCP receiving end for the RTT of the wireless link.
    Type: Application
    Filed: December 16, 2002
    Publication date: June 26, 2003
    Applicant: LG ELECTRONICS INC.
    Inventor: Chul-Hee Kang
  • Publication number: 20010025284
    Abstract: An apparatus and method for checking a link validity in a computer network, wherein, for the linking and referencing from one multimedia document to a different multimedia document in the computer network, desired information of the different multimedia document, such as last modified timestamp information indicative of a last modification time of the different multimedia document and latest version information of the different multimedia document, are stored in a validity check field, thereby assuring a link consistency. Therefore, a system error amount can be cost-effectively reduced for referencing to a multimedia document, and the reliability of searching and browsing can be increased.
    Type: Application
    Filed: December 4, 2000
    Publication date: September 27, 2001
    Inventors: Sang Hoon Seol, Sang Wook Oh, Chul Hee Kang