Patents by Inventor Kyu Hwan An

Kyu Hwan An 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).

  • Synchronization on reactivation of asynchronous table replication
    Patent number: 10296632
    Abstract: Technologies are described for performing synchronization within a database environment. A source host stores multiple database tables and a replica host stores copies of the multiple database tables. During synchronization, replication log replay is blocked at the replica node, and a multithreaded process locks the multiple database tables of the source hosts, reactivates replication log generation for each of the multiple database tables, and then unlocks the database tables. A synchronization timestamp is acquired and used to synchronize the multiple database tables with the copies of the multiple database tables. After synchronization, replication log replay is reactivated at the replica host for the copies of the multiple database tables.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: May 21, 2019
    Assignee: SAP SE
    Inventors: Chang Gyoo Park, Deok Koo Kim, Kyu Hwan Kim, Juchang Lee
  • BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20190129253
    Abstract: The present disclosure is directed to a liquid crystal display device including a display panel having a red pixel, a green pixel, and a blue pixel; and a backlight unit configured to emit light to the display panel. The backlight unit includes a light source which outputs a first color light; a color conversion layer configured to convert the first color light into a second color light such that red light and green light are spatially separated; and an optical sheet which diffuses or condenses the second color light.
    Type: Application
    Filed: September 28, 2018
    Publication date: May 2, 2019
    Inventors: Chang-Yul Moon, Ji-Su Yoon, Kyu-Hwan Lee
  • BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20190129250
    Abstract: The present disclosure is directed to a liquid crystal display device including a display panel including a red pixel, a green pixel, and a blue pixel; and a backlight unit which emits light to the display panel. The backlight unit includes a light source which outputs a first color light; a color conversion layer which is configured to convert the first color light into a second color light; an optical sheet which diffuses or condenses the second color light; and an air gap formed between the color conversion layer and the optical sheet.
    Type: Application
    Filed: October 12, 2018
    Publication date: May 2, 2019
    Inventors: Se-Hyun Park, Min-Jae Kang, Ji-Su Yoon, Kyu-Hwan Lee
  • BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20190129254
    Abstract: The present disclosure is directed to a liquid crystal display device including a display panel having a red pixel, a green pixel, and a blue pixel; and a backlight unit which emits light to the display panel. The backlight unit includes a light source which outputs a first color light; a color conversion layer which is disposed on the light source and converts the first color light into a second color light; an optical sheet which diffuses or condenses the second color light; and an air gap formed between the color conversion layer and the optical sheet.
    Type: Application
    Filed: September 25, 2018
    Publication date: May 2, 2019
    Inventors: Chang-Yul Moon, Je-Beom Park, Se-Hyun Park, Ji-Su Yoon, Kyu-Hwan Lee
  • Query hints for caching and replication
    Patent number: 10275508
    Abstract: A method may include receiving a query for data to be provided by a database server, wherein the query includes an indication of a maximum lag. The method may further include determining whether a hint is available to apply to the query, wherein the hint affects an execution of the query. When no hint is available, a baseline database server may be selected to be the database server. When the hint is available, a replication server or a cache server may be selected to be the database server based on the hint and the maximum lag. The query may be processed at the selected database server.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: April 30, 2019
    Assignee: SAP SE
    Inventors: Christian Bensberg, Norman May, Alexander Boehm, Juchang Lee, Sung Heun Wi, Jeong Ae Han, Ki Hong Kim, Kyu Hwan Kim, Chul Won Lee, Andreas Kemmler, Christoph Glania, Armin Risch, Kai Morich
  • Current collector for battery comprising metal mesh layer and manufacturing method therefor
    Patent number: 10276873
    Abstract: Provided are a current collector for a battery, including: a base material; adhesive layers positioned on the base material; and metal mesh layers positioned on the adhesive layers, in which the metal mesh layer includes a plurality of metal mesh patterns, and holes positioned between the metal mesh patterns, and a method of manufacturing the same. An active material is applied onto the metal mesh layer through the holes of the metal mesh layer, and thus a contact area of the metal mesh layer and the active material is increased, so that it is possible to restrict the active material from being deintercalated from the current collector and improve a cycle lifespan property of a battery.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: April 30, 2019
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Man Kim, Joo Yul Lee, Sang Yeoul Lee, Yong Soo Jeong, Do Yon Chang, Kyu Hwan Lee, Cheol Nam Yang, Chang Rae Lee, Seong Bong Yim, Dong Chan Lim, Jae Hong Lim, Young Sup Song, Sung Mo Moon, Su Sub Cha
  • Write access control in a database
    Patent number: 10275401
    Abstract: A computer implemented method for initializing a first image of a first database from a recovery image; modifying the first image of the first database by replaying transaction logs of a second database; establishing a connection with a client; receiving a query via the connection, the query including a transaction to be executed on the first database; and rejecting the query when the transaction would cause any one of: updating of the first image of the first database; generating a new transaction log; and modifying the recovery image. Related apparatus, systems, techniques and articles are also described.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: April 30, 2019
    Assignee: SAP SE
    Inventors: Chul Won Lee, Kyu Hwan Kim, Marcel Birn, Jane Jung Lee, Di Wu, Juchang Lee, Zhi Qiao
  • TRANSACTION COMMIT OPERATIONS WITH THREAD DECOUPLING AND GROUPING OF I/O REQUESTS
    Publication number: 20190121657
    Abstract: Innovations in the area of server-side processing when committing transactions to disk in a distributed database system can improve computational efficiency at database nodes and/or reduce network bandwidth utilization. For example, when transactions are committed in a database system, at a master node of the database system, a server uses different threads for certain processor-intensive operations and certain I/O-intensive operations. Or, as another example, when transactions are committed in a database system, at a master node of the database system, a server groups jobs for I/O requests.
    Type: Application
    Filed: December 18, 2018
    Publication date: April 25, 2019
    Applicant: SAP SE
    Inventors: Kyu Hwan Kim, Juchang Lee
  • Distributed database transaction protocol
    Patent number: 10268743
    Abstract: Technologies are described for facilitating transaction processing within a database environment having a coordinator node, a first worker node, and at least a second worker node. The first worker node sends a request from to the coordinator node for at least a first synchronization token maintained by the coordinator node. The first worker node receives the at least a first synchronization token from the coordinator node. The first worker node assigns the at least a first synchronization token to a snapshot as a snapshot ID value. The snapshot is executed at the first worker node. The first worker node forwards the snapshot ID value to the at least a second worker node.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 23, 2019
    Assignee: SAP SE
    Inventors: Juchang Lee, Chang Gyoo Park, Kyu Hwan Kim, Deok Koo Kim
  • Isolation level support in distributed database system
    Patent number: 10255237
    Abstract: A system includes transmission of a first transaction identifier and a first commit identifier to a first data storage system, the first commit identifier identifying a first data snapshot of the first data storage system, transmission of a first query to the first data storage system, transmission of a first prepare instruction and the first transaction identifier to the first data storage system, determination that a first ready response has been received from the first data storage system in response to the first prepare instruction, transmission, in response to the determination, of a first commit instruction and the first transaction identifier to the first data storage system, and reception of a second commit identifier from the first data storage system, the second commit identifier identifying a second data snapshot of the first data storage system.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: April 9, 2019
    Assignee: SAP SE
    Inventors: Curtis Johnson, Kyu Hwan Kim, Karim Khamis, Kurt Deschler
  • BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20190094616
    Abstract: A liquid crystal display device includes a liquid crystal panel and a backlight unit under the liquid crystal panel and including a circuit board; a plurality of LED packages mounted on the circuit board; a partition wall on the circuit board and surrounding at least one LED package; an encapsulation member covering the plurality of LED packages and the partition wall; and a reflective pattern sheet over the encapsulation member and including a plurality of first reflective patterns corresponding to the plurality of LED packages, respectively, wherein a height of the partition wall is equal to or greater than a height of the at least one LED package and smaller than or equal to a thickness of the encapsulation member.
    Type: Application
    Filed: September 25, 2018
    Publication date: March 28, 2019
    Applicant: LG Display Co., Ltd.
    Inventors: Dong-Hwi KIM, Ki-Seong KIM, Hyun-Min PARK, Kyu-Hwan LEE
  • BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20190094617
    Abstract: The present disclosure relates to a backlight unit and a liquid crystal display device. The liquid crystal display device includes a display panel including a red pixel, a green pixel, and a blue pixel; and a backlight unit which emits light to the display panel, wherein the backlight unit includes: a light source providing a first color light; a color conversion layer disposed on the light source and converting a part of the first color light into a second color light; an optical sheet between the display panel and the color conversion layer; and an air gap between the color conversion layer and the optical sheet.
    Type: Application
    Filed: September 25, 2018
    Publication date: March 28, 2019
    Applicant: LG Display Co., Ltd.
    Inventors: Je-Beom PARK, Ji-Su YOON, Min-Jae KANG, Kyu-Hwan LEE
  • Method and program for computing bone age by deep neural network
    Patent number: 10242293
    Abstract: Provided are a method and program for computing a bone age using a deep neural network. The method for computing a bone age using a deep neural network, including: receiving an analysis target image that is a specific medical image to compute the bone age; and analyzing the analysis target image by at least one computer using the deep neural network to compute the bone age. According to the present disclosure, since the bone age is computed by accumulating medical images of a specific race (particularly, Korean) and analyzing the same, it is possible to compute an accurate bone age that conforms to race.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: March 26, 2019
    Assignees: The Asan Foundation, Vuno, Inc.
    Inventors: Woo Hyun Shim, Jin Seong Lee, Yu Sub Sung, Hee Mang Yoon, Jung Hwan Baek, Sang Ki Kim, Hyun Jun Kim, Ye Ha Lee, Kyu Hwan Jung
  • Decentralized transaction commit protocol
    Patent number: 10235440
    Abstract: Technologies are described for facilitating transaction processing within a database environment having first, second, and third database system nodes. In the database system, the first database system node receives from the second database system node a request to precommit a first database transaction. The first database system node stores information for the first database transaction that includes an indication that the second database system node coordinates the committing of the first database transaction. The first database system node receives from the third database system node a request to precommit a second database transaction. The first database system node stores information for the second database transaction that includes an indication that the third database system node coordinates the committing of the second database transaction.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 19, 2019
    Assignee: SAP SE
    Inventors: Juchang Lee, Chang Gyoo Park, Kyu Hwan Kim
  • Electric shock device and portable electronic device including the same
    Patent number: 10222838
    Abstract: Provided is an electric shock protection device disposed between a human body contactable conductor and an internal circuit unit of an electronic device, wherein in order to pass static electricity without causing dielectric breakdown when the static electricity flows from the conductor, block a leakage current of an external power source flowing from a ground of the circuit unit, and pass communication signals flowing from the conductor, the following equation is satisfied: Vbr>Vin where Vbr is a breakdown voltage of the electric shock protection device and Vin is a rated voltage of an external power source of the electronic device.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: March 5, 2019
    Assignee: AMOTECH CO., LTD.
    Inventors: Tong Gi Kim, Jun-Suh Yu, Kyu Hwan Park, Gui Nam Sun, Jae Su Ryu, Byung Guk Lim, Rieon Kim
  • CONTENT-BASED MEDICAL IMAGE RETRIEVAL METHOD AND RETRIEVAL SYSTEM
    Publication number: 20190066847
    Abstract: A content-based medical image retrieval method and a retrieval system using the same include: obtaining m (2?m?n) number of unit images from a three-dimensional (3D) medical image including n (n?2) number of unit images and extracting features per unit image from each of the m (2?m?n) number of unit images through a feature extraction unit, wherein the 3D medical image is voxel data including a plurality of slices and each of the plurality of slices is defined as a unit image; inputting features of each unit image extracted from the m (2?m?n) number of unit images to a recurrent neural network to generate an output value; and performing medical image retrieval using the output value through an input processing unit, wherein a plurality of 3D medical images to be compared with the output value include a 3D medical image having p (p?2, p?n) number of unit images.
    Type: Application
    Filed: April 10, 2018
    Publication date: February 28, 2019
    Inventor: Kyu Hwan Jung
  • Electronic device module and manufacturing method thereof
    Patent number: 10219380
    Abstract: An electronic device module includes a board including external connecting electrodes and mounting electrodes; an electronic device mounted on the mounting electrodes; a molded portion sealing the electronic device; connection conductors having an end bonded to the external connecting electrodes and penetrating through the molded portion; and external terminals bonded to another end of the connection conductors.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: February 26, 2019
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Do Jae Yoo, Jae Hyun Lim, Kyu Hwan Oh, Jong In Ryu
  • Transaction commit operations with thread decoupling and grouping of I/O requests
    Patent number: 10191765
    Abstract: Innovations in the area of server-side processing when committing transactions to disk in a distributed database system can improve computational efficiency at database nodes and/or reduce network bandwidth utilization. For example, when transactions are committed in a database system, at a master node of the database system, a server uses different threads for certain processor-intensive operations and certain I/O-intensive operations. Or, as another example, when transactions are committed in a database system, at a master node of the database system, a server groups jobs for I/O requests.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: January 29, 2019
    Assignee: SAP SE
    Inventors: Kyu Hwan Kim, Juchang Lee
  • Data synchronization with minimal table lock duration in asynchronous table replication
    Patent number: 10185632
    Abstract: Disclosed herein are system, method, and computer program product embodiments for minimizing table lock duration during lost change resynchronization between a source table and a replica table. An embodiment operates by detecting a restart at a source node or a replica node. A source table at the source node is then locked based on the detection. A database transaction is then created for a lost change resynchronization operation and the source table is unlocked. The database transaction is then compared to another database transaction based on its timestamp. Based on the comparison, either the database transaction for the lost change resynchronization operation or the other database transaction is executed.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: January 22, 2019
    Assignee: SAP SE
    Inventors: Juchang Lee, Joo-Yeon Lee, Kyu-Hwan Kim, Deok-Hoe Kim, Kyungyul Park
  • Active cross-band isolation for a transformer-based power amplifier
    Patent number: 10181828
    Abstract: Embodiments of radio frequency (RF) systems include a plurality of power amplifiers having a primary winding and a secondary winding. Each of the power amplifiers may be configured to process signals of different frequency bands. The primary winding for one power amplifier can be detuned while another power amplifier is being used in a transmit mode. By detuning the power amplifier, power coupling from the transmitting power amplifier can be reduced or eliminated.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: January 15, 2019
    Inventors: Setu Mohta, Kyu Hwan An