Patents by Inventor Dae-Sik Oh
Dae-Sik 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).
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Patent number: 11929013Abstract: A display device according to an embodiment includes a pixel including a light emitting unit, a data driver that supplies a data voltage to the pixel, and a luminance corrector that corrects image data and generates compensation data corresponding to the data voltage. The light emitting unit includes at least one sub element group. The at least one sub element group includes light emitting elements. The luminance corrector extracts a deterioration value of the at least one sub element group and calculates a luminance value of the at least one sub element group according to a number of the light emitting elements included in the at least one sub element group.Type: GrantFiled: May 10, 2022Date of Patent: March 12, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Dae Gwang Jang, Jun Pyo Lee, Won Sik Oh, Jong Jae Lee
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Patent number: 11670824Abstract: The present disclosure relates to a secondary battery, which can improve the sealing efficiency of a can (or case). The secondary battery includes an electrode assembly; a case configured to accommodate the electrode assembly, the case including a bottom portion, long side portions and short side portions, at least one of which includes a welding portion that is configured to be bent and welded, and a cap plate coupled to the case, wherein a portion of the welding portion is overlap-welded.Type: GrantFiled: January 22, 2020Date of Patent: June 6, 2023Assignee: Samsung SDI Co., Ltd.Inventors: Dae Sik Oh, Jun Hyoung Park, Yong Seok Oh
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Patent number: 11626639Abstract: The present disclosure relates to a secondary battery, which can improve the sealing efficiency of a can (or case). The secondary battery includes an electrode assembly; a case configured to accommodate the electrode assembly, the case including a bottom portion, long side portions and short side portions, at least one of which includes a welding portion that is configured to be bent and welded, and a cap plate coupled to the case, wherein a portion of the welding portion is overlap-welded.Type: GrantFiled: January 22, 2020Date of Patent: April 11, 2023Assignee: Samsung SDI Co., Ltd.Inventors: Dae Sik Oh, Jun Hyoung Park, Yong Seok Oh
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Patent number: 11489223Abstract: A case for a secondary battery includes: a body plate including a bottom portion, first side portions bent and extended from the bottom portion in opposite directions, and extending portions bent from at least one selected from the bottom portion and the first side portions to then be extended; and second side portions coupled to the extending portions. A secondary battery includes an electrode assembly; the case accommodating the electrode assembly; and a cap assembly coupled to the case to seal the case.Type: GrantFiled: January 29, 2020Date of Patent: November 1, 2022Assignee: Samsung SDI Co., Ltd.Inventors: Dae Sik Oh, Hyung Noh Jung, Yong Seok Oh
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Patent number: 11469462Abstract: A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly, and a cap assembly coupled to the case to seal the case, and the case includes a bottom portion, long side portions bent and extended from the bottom portion, a first short side portion bent and extended from the bottom portion, second short side portions bent and extended from the long side portions, the first short side portion and the second short side portions connected to each other to define a short side portion, and protrusions located between the first short side portion and the second short side portions.Type: GrantFiled: December 18, 2019Date of Patent: October 11, 2022Assignee: Samsung SDI Co., Ltd.Inventors: Dae Sik Oh, Hyung Noh Jung, Yong Seok Oh
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Patent number: 11387508Abstract: A secondary battery includes an electrode assembly, a case accommodating the electrode assembly, and a cap assembly coupled to the case to seal the case, and the case includes a bottom portion, long side portions bent and extended from the bottom portion, a first short side portion bent and extended from the bottom portion, and second short side portions bent and extended from the long side portions, the first short side portion and the second short side portions connected to each other to define a short side portion, and curvatures located between the first short side portion and the second short side portions.Type: GrantFiled: December 18, 2019Date of Patent: July 12, 2022Assignee: Samsung SDI Co., Ltd.Inventor: Dae Sik Oh
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Publication number: 20210005851Abstract: A secondary battery includes an electrode assembly, a case accommodating the electrode assembly, and a cap assembly coupled to the case to seal the case, and the case includes a bottom portion, long side portions bent and extended from the bottom portion, a first short side portion bent and extended from the bottom portion, and second short side portions bent and extended from the long side portions, the first short side portion and the second short side portions connected to each other to define a short side portion, and curvatures located between the first short side portion and the second short side portions.Type: ApplicationFiled: December 18, 2019Publication date: January 7, 2021Inventor: Dae Sik OH
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Publication number: 20200388799Abstract: A case for a secondary battery includes: a body plate including a bottom portion, first side portions bent and extended from the bottom portion in opposite directions, and extending portions bent from at least one selected from the bottom portion and the first side portions to then be extended; and second side portions coupled to the extending portions. A secondary battery includes an electrode assembly; the case accommodating the electrode assembly; and a cap assembly coupled to the case to seal the case.Type: ApplicationFiled: January 29, 2020Publication date: December 10, 2020Inventors: Dae Sik OH, Hyung Noh JUNG, Yong Seok OH
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Publication number: 20200381681Abstract: The present disclosure relates to a secondary battery, which can improve the sealing efficiency of a can (or case). The secondary battery includes an electrode assembly; a case configured to accommodate the electrode assembly, the case including a bottom portion, long side portions and short side portions, at least one of which includes a welding portion that is configured to be bent and welded, and a cap plate coupled to the case, wherein a portion of the welding portion is overlap-welded.Type: ApplicationFiled: January 22, 2020Publication date: December 3, 2020Inventors: Dae Sik OH, Jun Hyoung PARK, Yong Seok OH
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Publication number: 20200335739Abstract: The secondary battery of the present embodiments can stably support a cap plate even if the length of a can (or case) is increased, and can improve manufacturability while reducing the processing cost. The secondary battery includes an electrode assembly; a case accommodating the electrode assembly and including a bottom portion, long side portions bent and extending from the bottom portion, short side portions extending from the bottom portion and the long side portions, and curved portions located between the long side portions and the short side portions; and a cap plate coupled to the case, wherein the long side portions of the case include stepped parts.Type: ApplicationFiled: January 22, 2020Publication date: October 22, 2020Inventor: Dae Sik OH
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Publication number: 20200335733Abstract: A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly, and a cap assembly coupled to the case to seal the case, and the case includes a bottom portion, long side portions bent and extended from the bottom portion, a first short side portion bent and extended from the bottom portion, second short side portions bent and extended from the long side portions, the first short side portion and the second short side portions connected to each other to define a short side portion, and protrusions located between the first short side portion and the second short side portions.Type: ApplicationFiled: December 18, 2019Publication date: October 22, 2020Inventors: Dae Sik OH, Hyung Noh JUNG, Yong Seok OH
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Publication number: 20200251692Abstract: A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly; and a cap assembly coupled to the case to seal the case, and the case includes a bottom portion, long side portions bent and extended from the bottom portion, a first short side portion bent and extended from the bottom portion, and second short side portions bent and extended from the long side portions, and the first short side portion and the second short side portions are connected to one another to define a short side portion.Type: ApplicationFiled: December 18, 2019Publication date: August 6, 2020Inventors: Dae Sik OH, Sang Young JIN
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Patent number: 10231112Abstract: Disclosed herein is a method for emitting pilot beacons. The method includes a base station system emitting a pilot beacon on a first air interface protocol. The base station system wirelessly receives a registration message for a mobile station that detected the pilot beacon on the first air interface protocol. The registration message includes a registration request seeking registration of the mobile station under the first air interface protocol with the base station system. In response to the received registration message, the base station system makes a determination that the mobile station is capable of operating on a second air interface protocol different from the first air interface protocol. In response to the determination, the base station system emits at least one pilot beacon on the second air interface protocol.Type: GrantFiled: August 26, 2009Date of Patent: March 12, 2019Assignee: Sprint Spectrum L.P.Inventors: Dae-Sik Oh, Michael C. DeLaet, Robert C. Pippert
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Patent number: 8929195Abstract: Assigning CDMA channel codes in a multiple beam zone sector such that they may be reused within the same sector. In an exemplary embodiment, the method includes configuring directional antennas in a cell sector to provide multiple beam zones in a cell sector and assigning channel codes for use within the beam zones such that each channel code is assigned for use in only one beam zone of any set of three consecutive beam zones in the cell sector. The reassignment is preferable conditioned upon the mobility status of the user. This effectively reduces the inter-user interference by ensuring at least two intervening beam zones are located between zones that are using the same channel codes, and that the second user is not mobile. The channel codes may be Walsh codes or quasi-orthogonal functions (QOFs).Type: GrantFiled: May 11, 2005Date of Patent: January 6, 2015Assignee: Sprint Spectrum L.P.Inventors: Mark Yarkosky, Shiva Narayanabhatla, John Cheong-Wai Ngan, Dae-Sik Oh
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Patent number: 8893942Abstract: An apparatus of correcting belt-meandering for a secondary battery is disclosed. In one embodiment, the apparatus includes i) upper and lower rollers configured to receive a base material therebetween, wherein the base material comprises positive and negative electrode materials and an insulating material interposed between the electrode materials and ii) a driver portion configured to rotate the upper and lower rollers such that the base material is transferred in a first direction during the rotation. The apparatus may also include i) a support portion configured to support shafts of the driver portion and the upper and lower rollers and ii) a transverse moving mechanism configured to move the support portion in a second direction substantially perpendicular to the first direction.Type: GrantFiled: July 12, 2011Date of Patent: November 25, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Dae-Sik Oh, Keon-Soo Bae, Gi-Bong Cho, Sung-Jea Park
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Patent number: 8543110Abstract: Disclosed herein is a method and apparatus for providing a pilot-beacon on behalf of one or more base stations, such as one or more femtocells. A pilot-beacon transmitter, separate from the base stations, determines the locations of coverage areas of the base stations and then dynamically configures a pilot-beacon radiation pattern to encompass (approximately) the determined coverage areas. That way, a mobile station may detect the pilot beacon and initiate scanning of coverage provided by the base stations. Optimally, the method can be used to provide a pilot beacon for femtocells, thereby avoiding the need for the femtocells to include pilot beacon transmission functions and thus possibly decreasing the cost of the femtocells. The pilot-beacon transmitter or another entity may also be configured to receive and forward GPS signals to the base stations, possibly offsetting GPS timing based on measured delays for communication with the base stations.Type: GrantFiled: February 1, 2012Date of Patent: September 24, 2013Assignee: Sprint Spectrum L.P.Inventors: Dae-Sik Oh, Michael C. DeLaet, Robert C. Pippert
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Patent number: 8422537Abstract: Presently disclosed is a method for reducing interference in a wireless distributed antenna systems. In an embodiment, interference is reduced by selectively placing a first wireless remote unit in a reduced signal interference mode. A controller sends a signal, such as a reverse link power-down signal, to the first remote unit after detecting less than a threshold incoming signal strength at the first remote unit. In an alternative embodiment, the controller requests that a given remote unit switch to the reduced signal interference mode when the controller is receiving signals from a mobile station through at least two different remote units.Type: GrantFiled: March 23, 2010Date of Patent: April 16, 2013Assignee: Sprint Spectrum L.P.Inventors: Dae-Sik Oh, Mark Yarkosky, Kristin A. Hayne, Thomas M. Steele
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Patent number: 8355713Abstract: Methods and systems are provided for determining relative priorities of wireless communication devices with respect to controlling controllable devices. A femtocell receiving a registration request and a device identifier from a first wireless communication device may responsively (i) provide the first wireless communication device with wireless service and (ii) use the device identifier to determine at least one respective relative priority of the first wireless communication device compared to a second wireless communication device with respect to controlling at least one controllable device. The femtocell may then transmit at least one message to at least one of (i) the first wireless communication device, (ii) the second wireless communication device, and (iii) at least one controllable device in accordance with the determination, the at least one message reflecting the determined at least one relative priority. In this way, conflicts between multiple controlling devices may be avoided.Type: GrantFiled: January 21, 2010Date of Patent: January 15, 2013Assignee: Sprint Spectrum L.P.Inventors: Dae-Sik Oh, Michael C. DeLaet, Robert C. Pippert
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Patent number: 8243632Abstract: To provide high-data-rate wireless communication in both directions between a pair of nodes, the present invention provides for operating at least two asymmetric wireless connections in parallel but in reverse directions between the nodes. One of the asymmetric wireless connections will provide a high-data-rate forward link in one direction between the nodes, while the other asymmetric wireless connection will concurrently provide a high-data-rate forward link in the other direction between the nodes. The lower-data-rate reverse links provided by the asymmetric wireless connections can then be used to carry overhead control data or can be used to supplement the primary high-data-rate communication provided by the forward links. Preferably, 1xEV-DO will be used for both asymmetric wireless data links, but other asymmetric air interface protocols could be used instead.Type: GrantFiled: August 25, 2005Date of Patent: August 14, 2012Assignee: Sprint Spectrum L.P.Inventors: Dae-Sik Oh, Tim W. Sill, Thomas M. Steele, Saad Z. Asif, Leo R. Anderson, Jr.
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Publication number: 20120129535Abstract: Disclosed herein is a method and apparatus for providing a pilot-beacon on behalf of one or more base stations, such as one or more femtocells. A pilot-beacon transmitter, separate from the base stations, determines the locations of coverage areas of the base stations and then dynamically configures a pilot-beacon radiation pattern to encompass (approximately) the determined coverage areas. That way, a mobile station may detect the pilot beacon and initiate scanning of coverage provided by the base stations. Optimally, the method can be used to provide a pilot beacon for femtocells, thereby avoiding the need for the femtocells to include pilot beacon transmission functions and thus possibly decreasing the cost of the femtocells. The pilot-beacon transmitter or another entity may also be configured to receive and forward GPS signals to the base stations, possibly offsetting GPS timing based on measured delays for communication with the base stations.Type: ApplicationFiled: February 1, 2012Publication date: May 24, 2012Inventors: Dae-Sik Oh, Michael C. DeLaet, Robert C. Pippert