Patents by Inventor Dae-Kyu Choi

Dae-Kyu 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: 9900091
    Abstract: The present disclosure relates to a sensor network, machine type communication (MTC), machine-to-machine (M2M) communication, and technology for internet of things (IoT). The present disclosure may be applied to intelligent services based on the above technologies, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method of an electronic device for pairing with a lighting device is provided. The method includes acquiring an image photographing the lighting device, acquiring identification data of the lighting device from the image, and pairing with the lighting device by transmitting the identification data to the lighting device. Further, a method of a lighting device for pairing with an electronic device is provided.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: February 20, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-Kyu Choi, Yong-Seok Park
  • Patent number: 9860869
    Abstract: Provided is a method for offloading data traffic by a Mobility Management Entity (MME) in a wireless communication system. The method includes determining a Packet Data Network (PDN) to connect to for providing a service requested by a User Equipment (UE), upon receiving a connection request message requesting connection between the UE and the PDN from the UE, selecting a gateway disposed closest to a Radio Access Network (RAN), sending a permit message permitting a request for connection between the UE and the PDN to the UE, and setting an Evolved Packet Service (EPS) bearer for transmission and reception of data traffic related to a service requested by the UE between the UE and the gateway.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: January 2, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min Kim, Yong-Hwan Kim, Youn-Hee Han, Sang-Jun Moon, Yong-Seok Park, Jin-Ho Lee, Dae-Kyu Choi
  • Patent number: 9788257
    Abstract: A method of dynamically forming a service aware Bluetooth low energy (BLE) mesh network is provided. The method includes deriving service requirements for a BLE mesh service based on a unique identifier associated with the BLE mesh service, determining a BLE mesh service to be provided based on at least one BLE parameter, and dynamically forming a BLE mesh network based on the determined BLE mesh service, the service requirements and the at least one BLE parameter. The BLE mesh network is one of connection-oriented, or connection-less.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: October 10, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ajeet Kumar Singh, Anand Sudhakar Chiddarwar, Arzad Alam Kherani, Dae-kyu Choi, Midhun K, Sushanth Gajanan, Do-jun Byun, Sang-Jun Moon
  • Publication number: 20170201441
    Abstract: The present disclosure relates to a sensor network, machine type communication (MTC), machine-to-machine (M2M) communication, and technology for internet of things (IoT). The present disclosure may be applied to intelligent services based on the above technologies, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method for detecting a counterfeit advertiser by a server includes detecting a random delay time or a cumulative interval for a reference device based on a time stamp for an advertisement packet received from the reference device, and detecting a random delay time or a cumulative interval for a receiving device other than the reference device based on a time stamp for an advertisement packet received from the receiving device.
    Type: Application
    Filed: January 6, 2017
    Publication date: July 13, 2017
    Inventors: Dae-Kyu CHOI, Sin-Seok SEO, Ki-Seok LEE, Do-Hy HONG
  • Publication number: 20170195834
    Abstract: The present disclosure relates to a sensor network, Machine Type Communication (MTC), Machine-to-Machine (M2M) communication, and technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the above technologies, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and apparatus for estimating a location in a terminal are provided. The method includes calculating locations of the terminal and a tag, calculating information about movement of the terminal using a motion sensor, and correcting the calculated location of the tag based on information about the movement of the terminal.
    Type: Application
    Filed: November 8, 2016
    Publication date: July 6, 2017
    Inventors: In-Hak NA, Sang-Jun MOON, Sin-Seok SEO, Sang-Hyun CHANG, Dae-Kyu CHOI
  • Publication number: 20170195855
    Abstract: A method and apparatus for estimating a position of a terminal is provided. The method and apparatus include a technique for a sensor network, a machine to machine (M2M), a machine type communication (MTC), and Internet of things (IoT), and may be used for intelligent services based on the technique (smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail industry, and security and safety related services). The method includes identifying direction information of a received signal if setting up connection between a terminal and an access point (AP), receiving information about a barometric pressure sensor from the terminal, and calculating the position of the terminal based on the direction information and the information about the barometric pressure sensor of the terminal.
    Type: Application
    Filed: November 2, 2016
    Publication date: July 6, 2017
    Inventors: In-Hak NA, Sang-Jun MOON, Sin-Seok SEO, Sang-Hyun CHANG, Dae-Kyu CHOI
  • Publication number: 20170156102
    Abstract: A method of dynamically forming a service aware Bluetooth low energy (BLE) mesh network is provided. The method includes deriving service requirements for a BLE mesh service based on a unique identifier associated with the BLE mesh service, determining a BLE mesh service to be provided based on at least one BLE parameter, and dynamically forming a BLE mesh network based on the determined BLE mesh service, the service requirements and the at least one BLE parameter. The BLE mesh network is one of connection-oriented, or connection-less.
    Type: Application
    Filed: March 25, 2016
    Publication date: June 1, 2017
    Inventors: Ajeet Kumar SINGH, Anand Sudhakar CHIDDARWAR, Arzad Alam KHERANI, Dae-kyu CHOI, Midhun K, Sushanth GAJANAN, Do-jun BYUN, Sang-Jun MOON
  • Publication number: 20160366642
    Abstract: The present disclosure relates to a sensor network, Machine Type Communication (MTC), Machine-to-Machine (M2M) communication, and technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the above technologies, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and an apparatus for synchronizing communication between nodes in a bluetooth low energy (BLE) mesh network. In the network, a node is configured to generates a seed value based on at least one of own transmission parameter, wherein the seed value indicates next data advertisement instance of corresponding node. Further, the seed value is used for communicating with other nodes (i.e. 1-hop neighbor nodes) in the network. Based on data transfer requirements of the node, the node synchronizes own data transmission and reception settings, such that no two nodes transmit data at the same time.
    Type: Application
    Filed: June 3, 2016
    Publication date: December 15, 2016
    Inventors: Ajeet Kumar SINGH, Arzad Alam KHERANI, Dae-Kyu CHOI, Anand Sudhakar CHIDDARWAR, Sang-Jun MOON
  • Patent number: 9451686
    Abstract: A hybrid plasma reactor includes a reactor body having a plasma discharge space, a gas inlet, and a gas outlet; a hybrid plasma source including a first hybrid electrode and a second hybrid electrode, which face each other while the reactor body is positioned therebetween and provide a current path having one or more turns, to be inductively and capacitively coupled to plasma formed in the plasma discharge space; and an alternating switching power supply for supplying plasma generation power to the first hybrid electrode and the second hybrid electrode. The hybrid plasma reactor can complexly generate capacitively coupled plasma and inductively coupled plasma, thereby achieving a wide operation area from a low-pressure area to a high-pressure area.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: September 20, 2016
    Inventor: Dae-Kyu Choi
  • Patent number: 9263237
    Abstract: The following description relates to a plasma processing apparatus and a method thereof. The plasma processing apparatus comprises a first plasma chamber having a first plasma discharge space, a first plasma source for supplying a first activation energy to the first plasma discharge space within the first plasma chamber, a second plasma chamber which is connected to the first plasma chamber and has a second discharge space, and a second plasma source for supplying a second activation energy for inducing inductive coupled plasma to the second plasma discharge space within the second plasma chamber.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: February 16, 2016
    Assignee: GEN CO., LTD.
    Inventor: Dae-Kyu Choi
  • Publication number: 20150372754
    Abstract: The present disclosure relates to a sensor network, machine type communication (MTC), machine-to-machine (M2M) communication, and technology for internet of things (IoT). The present disclosure may be applied to intelligent services based on the above technologies, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method of an electronic device for pairing with a lighting device is provided. The method includes acquiring an image photographing the lighting device, acquiring identification data of the lighting device from the image, and pairing with the lighting device by transmitting the identification data to the lighting device. Further, a method of a lighting device for pairing with an electronic device is provided.
    Type: Application
    Filed: June 24, 2015
    Publication date: December 24, 2015
    Inventors: Dae-Kyu CHOI, Yong-Seok PARK
  • Patent number: 9151393
    Abstract: A two way gate valve includes a valve chamber having a first entrance coupled with a first chamber, a second entrance coupled with a second chamber, and an openable and closable chamber cover; a moving module having a first sealing plate for sealing the first entrance, a second sealing plate for sealing the second entrance, and a moving module body to which the first and the second sealing plates are mounted; a push-pull module having a push-pull module body coupled with the moving module body such that the moving module body can linearly move, a first operating body for moving the moving module in a first entrance direction such that the first sealing plate seals the first entrance, and a second operating body for moving the moving module in a second entrance direction such that the second sealing plate seals the second entrance.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: October 6, 2015
    Assignee: NEW POWER PLASMA CO., LTD.
    Inventor: Dae-Kyu Choi
  • Patent number: 9035553
    Abstract: A hybrid plasma reactor includes a reactor body having a plasma discharge space, a gas inlet, and a gas outlet; a hybrid plasma source including an inductive antenna inductively coupled to plasma formed in the plasma discharge space and a primary winding coil transformer coupled to the plasma and wound in a magnetic core; and an alternating switching power supply for supplying plasma generation power to the inductive antenna and the primary winding coil. The hybrid plasma reactor induces a plasma discharge using the inductively coupled plasma source and the transformer coupled plasma source, so that it has a wide operational area from a low pressure area to a high pressure area.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: May 19, 2015
    Inventor: Dae-Kyu Choi
  • Patent number: 8961736
    Abstract: There is provided a plasma reactor with an internal transformer. The plasma reactor comprises: a plasma chamber with a gas inlet and a gas outlet, for providing a plasma discharging space; one or more core cylinder jackets for providing a core storage space in the plasma discharging space and forming a plasma centralized channel and a plasma decentralized channel by including one or more through-apertures; and one or more transformers each including a magnetic core with primary winding surrounding the through-aperture and installed in the core storage space, wherein the plasma discharging space comprises one or more first spatial regions to form the plasma centralized channel and one or more second spatial regions to form the plasma decentralized channel. In the plasma reactor, since the transformer is installed in the plasma chamber, energy is transferred with almost no loss from the transformer to the plasma discharging space and therefore the energy transfer efficiency is very high.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: February 24, 2015
    Assignee: New Power Plasma Co., Ltd.
    Inventor: Dae-Kyu Choi
  • Publication number: 20150003314
    Abstract: Provided is a method for offloading data traffic by a Mobility Management Entity (MME) in a wireless communication system. The method includes determining a Packet Data Network (PDN) to connect to for providing a service requested by a User Equipment (UE), upon receiving a connection request message requesting connection between the UE and the PDN from the UE, selecting a gateway disposed closest to a Radio Access Network (RAN), sending a permit message permitting a request for connection between the UE and the PDN to the UE, and setting an Evolved Packet Service (EPS) bearer for transmission and reception of data traffic related to a service requested by the UE between the UE and the gateway.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Inventors: Min Kim, Yong-Hwan Kim, Youn-Hee Han, Sang-Jun Moon, Yong-Seok Park, Jin-Ho Lee, Dae-Kyu Choi
  • Patent number: 8866390
    Abstract: A hybrid plasma reactor includes a first plasma chamber for providing a first ring-shaped plasma discharge space, second plasma chambers providing a second plasma discharge space connected to the first plasma discharge space and coupled to magnetic flux channels, a hybrid plasma source including magnetic cores, which partially surround the first plasma chamber and have magnetic entrances forming the magnetic flux channels, and primary winding coils wound in the magnetic cores and complexly generating ring-shaped transformer-coupled plasma in the first plasma discharge space and magnetic flux channel coupled plasma in the second plasma discharge space, and an AC switching power supply for supplying plasma generation power to the primary winding coils. The hybrid plasma reactor can complexly generate magnetic flux channel coupled plasma and transformer coupled plasma so that it has a high control capability for plasma ion energy and a wide operation region from a low-pressure region to a high-pressure region.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: October 21, 2014
    Inventor: Dae-Kyu Choi
  • Patent number: 8597464
    Abstract: There is provided an inductively coupled plasma reactor. The inductively coupled plasma reactor is connected to a transformer with multiple magnetic cores and a primary winding, to transfer an electromotive force for plasma discharge to a plasma discharge chamber of a reactor body. Parts of magnetic core positioned in side the plasma discharge chamber are protected by being entirely covered by a core protecting tube. The primary winding is electrically connected to a power supply source providing radio frequency power. In the inductively coupled plasma reactor, since a number of magnetic core cross sectional parts are positioned inside the plasma discharge chamber, the efficiency of transferring the inductively coupled energy to be connected with plasma is very high.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: December 3, 2013
    Assignee: New Power Plasma Co., Ltd
    Inventor: Dae-Kyu Choi
  • Publication number: 20130307414
    Abstract: A hybrid plasma reactor includes a reactor body having a plasma discharge space, a gas inlet, and a gas outlet; a hybrid plasma source including an inductive antenna inductively coupled to plasma formed in the plasma discharge space and a primary winding coil transformer coupled to the plasma and wound in a magnetic core; and an alternating switching power supply for supplying plasma generation power to the inductive antenna and the primary winding coil. The hybrid plasma reactor induces a plasma discharge using the inductively coupled plasma source and the transformer coupled plasma source, so that it has a wide operational area from a low pressure area to a high pressure area.
    Type: Application
    Filed: November 9, 2012
    Publication date: November 21, 2013
    Inventor: Dae-Kyu CHOI
  • Publication number: 20130175928
    Abstract: A hybrid plasma reactor includes a first plasma chamber for providing a first ring-shaped plasma discharge space, second plasma chambers providing a second plasma discharge space connected to the first plasma discharge space and coupled to magnetic flux channels, a hybrid plasma source including magnetic cores, which partially surround the first plasma chamber and have magnetic entrances forming the magnetic flux channels, and primary winding coils wound in the magnetic cores and complexly generating ring-shaped transformer-coupled plasma in the first plasma discharge space and magnetic flux channel coupled plasma in the second plasma discharge space, and an AC switching power supply for supplying plasma generation power to the primary winding coils. The hybrid plasma reactor can complexly generate magnetic flux channel coupled plasma and transformer coupled plasma so that it has a high control capability for plasma ion energy and a wide operation region from a low-pressure region to a high-pressure region.
    Type: Application
    Filed: January 10, 2013
    Publication date: July 11, 2013
    Inventor: Dae-Kyu CHOI
  • Patent number: RE45527
    Abstract: There is provided an inductively coupled plasma reactor. The inductively coupled plasma reactor is connected to a transformer with multiple magnetic cores and a primary winding, to transfer an electromotive force for plasma discharge to a plasma discharge chamber of a reactor body. Parts of magnetic core positioned in side the plasma discharge chamber are protected by being entirely covered by a core protecting tube. The primary winding is electrically connected to a power supply source providing radio frequency power. In the inductively coupled plasma reactor, since a number of magnetic core cross sectional parts are positioned inside the plasma discharge chamber, the efficiency of transferring the inductively coupled energy to be connected with plasma is very high.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: May 26, 2015
    Assignee: NEW POWER PLASMA CO., LTD.
    Inventor: Dae-Kyu Choi