Patents by Inventor Chang Ryoo
Chang Ryoo 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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Publication number: 20230376217Abstract: A memory device is provided. The memory device includes: a buffer memory; and a memory controller configured to: obtain map data and meta data for recovering the map data from at least one external storage device; store the map data and the meta data obtained from the at least one external storage device in the buffer memory, the buffer memory being allocated for the at least one external storage device; translate a logical address corresponding to the at least one external storage device into a physical address of the buffer memory; and send the map data and the meta data to the at least one external storage device in response to detecting a sudden power-off event.Type: ApplicationFiled: May 11, 2023Publication date: November 23, 2023Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chon Yong LEE, Kyunghan Lee, Seongsik Hwang, Kyung-Chang Ryoo, Jae-Hoon Jung
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Publication number: 20230376238Abstract: A method of operating storage devices, a memory device, a host device, and a switch, is provided. The method includes: receiving, by the memory device, a first request corresponding to target user data from the host device; generating, by the memory device, first input/output (I/O) stream information based on telemetry information corresponding to the storage devices and map data in a buffer memory of the memory device based on the first request, wherein the first I/O stream information indicates a data path between a first storage device of the storage devices and the host device; providing, by the memory device, a first redirection request including the first request and the first I/O stream information to the host device or the first storage device through the switch; and processing the target user data according to the first I/O stream information in the first redirection request.Type: ApplicationFiled: May 2, 2023Publication date: November 23, 2023Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chon Yong LEE, Jae-Gon Lee, Kyung-Chang Ryoo, Kyunghan Lee, Hyeyoung Ryu
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Publication number: 20230359379Abstract: A method of operating a computing system which includes a plurality of storage devices, a memory device, and a switch, is provided. The method includes: providing a first mapping request including first metadata corresponding to first user data to the memory device through the switch, by a first storage device of the plurality of storage devices; identifying a first standard corresponding to the first metadata based on the first mapping request, by the memory device; and generating first map data indicating a relationship between a first physical block address and a first logical block address of the first user data based on the first standard, by the memory device.Type: ApplicationFiled: April 27, 2023Publication date: November 9, 2023Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: CHON YONG LEE, KYUNGHAN LEE, SEONGSIK HWANG, JAE-GON LEE, KYUNG-CHANG RYOO
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Patent number: 10629262Abstract: Provided is a method of operating a resistive memory device including a memory cell array. The method includes the resistive memory device performing a first write operation in response to an active command and a write command and performing a second write operation in response to a write active command and the write command. The first write operation includes a read data evaluation operation for latching data read from the memory cell array in response to the active command. The second write operation excludes the read data evaluation operation.Type: GrantFiled: August 29, 2018Date of Patent: April 21, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hye-Young Ryu, Kyung-Chang Ryoo, Yong-Jun Lee
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Publication number: 20190267084Abstract: Provided is a method of operating a resistive memory device including a memory cell array. The method includes the resistive memory device performing a first write operation in response to an active command and a write command and performing a second write operation in response to a write active command and the write command. The first write operation includes a read data evaluation operation for latching data read from the memory cell array in response to the active command. The second write operation excludes the read data evaluation operation.Type: ApplicationFiled: August 29, 2018Publication date: August 29, 2019Inventors: Hye-Young Ryu, Kyung-Chang Ryoo, Yong-Jun Lee
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Patent number: 10049717Abstract: A method of wear leveling for a storage device or a memory device includes: receiving an inputted memory address; randomizing the inputted memory address to be a randomized memory address; and periodically reassigning the randomized memory address to be a different memory address.Type: GrantFiled: May 31, 2016Date of Patent: August 14, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Dimin Niu, Mu-Tien Chang, Hongzhong Zheng, Kyung-Chang Ryoo
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Patent number: 9949900Abstract: A method for preparing a liquid crystal emulsion includes: a) mixing, warming and dissolving intercellular lipid ingredients, non-polyoxyethylene (POE) based non-ionic surfactant, higher fatty alcohol, oil and wax to provide an oil phase part; b) mixing, warming and dissolving water, polyol and the other aqueous phase ingredients to provide an aqueous phase part; c) adding the oil phase part to the aqueous phase part, followed by agitation; d) introducing a viscosity modifier to the mixture solution under agitation; e) subjecting the mixture solution to rapid cooling under vacuum while carrying out debubbling under vacuum; and f) filtering the mixture solution through a filtering paper or filtering cloth. Provided is a stable liquid crystal emulsion having a multilayer lamellar structure including a large amount of intercellular lipid ingredients through a process using rapid cooling. The liquid crystal emulsion has an oil phase part and an aqueous phase part.Type: GrantFiled: September 27, 2013Date of Patent: April 24, 2018Assignee: COSMAX CO., LTD.Inventors: Jun Bae Lee, Chun Ho Park, Moung Seok Yoon, Hee Chang Ryoo, Seon Mi Kim
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Publication number: 20170256305Abstract: A method of wear leveling for a storage device or a memory device includes: receiving an inputted memory address; randomizing the inputted memory address to be a randomized memory address; and periodically reassigning the randomized memory address to be a different memory address.Type: ApplicationFiled: May 31, 2016Publication date: September 7, 2017Inventors: Dimin Niu, Mu-Tien Chang, Hongzhong Zheng, Kyung-Chang Ryoo
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Patent number: 9710747Abstract: A method of generating neuron spiking pulses in a neuromorphic system is provided which includes floating one or more selected bit lines connected to target cells, having a first state, from among a plurality of memory cells arranged at intersections of a plurality of word lines and a plurality of bit lines; and stepwisely increasing voltages applied to unselected word lines connected to unselected cells, having a second state, from among memory cells connected to the one or more selected bit lines other than the target cells having the first state.Type: GrantFiled: July 10, 2014Date of Patent: July 18, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Daehwan Kang, Kyung-chang Ryoo, Hyun Goo Jun, Hongsik Jeong, JaeHee Oh
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Patent number: 9687423Abstract: Provided is a method for preparing a nanoemulsion, including mixing an oil phase part (A) containing a ceramide or derivative thereof, cholesterol, non-ionic surfactant, phospholipid and a polyol, a perfume part (B) containing a perfume ingredient, non-ionic surfactant and an alcohol, and an aqueous phase part (C) containing the other water-soluble active ingredients. When a nanoemulsion is obtained by the method, it is possible to reduce processing time and cost since a non-ionic surfactant is used without a high-pressure emulsification process, and the obtained nanoemulsion is more stable against a change in temperature than the other solubilized formulations.Type: GrantFiled: August 12, 2014Date of Patent: June 27, 2017Assignee: COSMAX, INC.Inventors: Jun Bae Lee, Chun Ho Park, Moung Seok Yoon, Hee Chang Ryoo
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Patent number: 9688832Abstract: A method for preparing macroporous polymethyl methacrylate (PMMA) particles includes the steps of: (a) dissolving a polymethyl methacrylate polymer and Pluronic polymer into an organic solvent; (b) introducing the mixed solution of step (a) to an aqueous solution containing a surfactant to carry out emulsion polymerization; (c) heating the resultant product of step (b) to allow evaporation of the organic solvent; and (d) washing and drying the porous polymethyl methacrylate particles remaining after the evaporation.Type: GrantFiled: March 18, 2014Date of Patent: June 27, 2017Assignee: COSMAX CO., LTD.Inventors: Jun Bae Lee, Chun Ho Park, Hee Chang Ryoo
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Publication number: 20160213579Abstract: A method for preparing a liquid crystal emulsion includes: a) mixing, warming and dissolving intercellular lipid ingredients, non-polyoxyethylene (POE) based non-ionic surfactant, higher fatty alcohol, oil and wax to provide an oil phase part; b) mixing, warming and dissolving water, polyol and the other aqueous phase ingredients to provide an aqueous phase part; c) adding the oil phase part to the aqueous phase part, followed by agitation; d) introducing a viscosity modifier to the mixture solution under agitation; e) subjecting the mixture solution to rapid cooling under vacuum while carrying out debubbling under vacuum; and f) filtering the mixture solution through a filtering paper or filtering cloth. Provided is a stable liquid crystal emulsion having a multilayer lamellar structure including a large amount of intercellular lipid ingredients through a process using rapid cooling. The liquid crystal emulsion has an oil phase part and an aqueous phase part.Type: ApplicationFiled: September 27, 2013Publication date: July 28, 2016Inventors: Jun Bae LEE, Chun Ho PARK, Moung Seok YOON, Hee Chang RYOO, Seon Mi KIM
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Publication number: 20160199269Abstract: Provided is a method for preparing a nanoemulsion, including mixing an oil phase part (A) containing a ceramide or derivative thereof, cholesterol, non-ionic surfactant, phospholipid and a polyol, a perfume part (B) containing a perfume ingredient, non-ionic surfactant and an alcohol, and an aqueous phase part (C) containing the other water-soluble active ingredients. When a nanoemulsion is obtained by the method, it is possible to reduce processing time and cost since a non-ionic surfactant is used without a high-pressure emulsification process, and the obtained nanoemulsion is more stable against a change in temperature than the other solubilized formulations.Type: ApplicationFiled: August 12, 2014Publication date: July 14, 2016Inventors: Jun Bae LEE, Chun Ho PARK, Moung Seok YOON, Hee Chang RYOO
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Publication number: 20160009892Abstract: A method for preparing macroporous polymethyl methacrylate (PMMA) particles includes the steps of: (a) dissolving a polymethyl methacrylate polymer and Pluronic polymer into an organic solvent; (b) introducing the mixed solution of step (a) to an aqueous solution containing a surfactant to carry out emulsion polymerization; (c) heating the resultant product of step (b) to allow evaporation of the organic solvent; and (d) washing and drying the porous polymethyl methacrylate particles remaining after the evaporation.Type: ApplicationFiled: March 18, 2014Publication date: January 14, 2016Applicant: COSMAX CO., LTD.Inventors: Jun Bae LEE, Chun Ho PARK, Hee Chang RYOO
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Patent number: 9230642Abstract: A variable resistance memory system includes a variable resistance memory device including a memory cell array including first and second areas; and a memory controller configured to control the variable resistance memory device. The first area includes first variable resistance memory cells including a first variable resistance material layer and the second area includes second variable resistance memory cells including a second variable resistance material layer having a metallic doping concentration higher than a metallic doping concentration of the first variable resistance material layer. The first variable resistance memory cells are used as storage and the second variable resistance memory cells are used as a buffer memory.Type: GrantFiled: April 21, 2014Date of Patent: January 5, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyung-chang Ryoo, Hongsik Jeong, Daehwan Kang, JaeHee Oh, Jihyung Yu
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Publication number: 20150043267Abstract: A variable resistance memory system includes a variable resistance memory device including a memory cell array including first and second areas; and a memory controller configured to control the variable resistance memory device. The first area includes first variable resistance memory cells including a first variable resistance material layer and the second area includes second variable resistance memory cells including a second variable resistance material layer having a metallic doping concentration higher than a metallic doping concentration of the first variable resistance material layer. The first variable resistance memory cells are used as storage and the second variable resistance memory cells are used as a buffer memory.Type: ApplicationFiled: April 21, 2014Publication date: February 12, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyung-chang Ryoo, Hongsik Jeong, Daehwan Kang, JaeHee Oh, Jihyung Yu
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Publication number: 20150039547Abstract: A method of generating neuron spiking pulses in a neuromorphic system is provided which includes floating one or more selected bit lines connected to target cells, having a first state, from among a plurality of memory cells arranged at intersections of a plurality of word lines and a plurality of bit lines; and stepwisely increasing voltages applied to unselected word lines connected to unselected cells, having a second state, from among memory cells connected to the one or more selected bit lines other than the target cells having the first state.Type: ApplicationFiled: July 10, 2014Publication date: February 5, 2015Inventors: Daehwan KANG, Kyung-chang RYOO, Hyun Goo JUN, Hongsik JEONG, JaeHee OH
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Patent number: 8472237Abstract: Example embodiments disclose a semiconductor device using resistive memory material layers and a method of driving the semiconductor device. The semiconductor device includes a plurality of memory cells. At least one memory cell includes a uni-polar variable resistor and a bi-polar variable resistor connected in series and configured to switch between low resistance states and high resistance states, respectively, according to an applied voltage.Type: GrantFiled: November 10, 2010Date of Patent: June 25, 2013Assignees: Samsung Electronics Co., Ltd., Seoul National University R&DB FoundationInventors: Jeong-hoon Oh, Kyung-chang Ryoo, Byung-gook Park, Kyung-seok Oh, In-gyu Baek
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Patent number: 8384060Abstract: Provided is a resistive memory device that can be integrated with a high integration density and method of forming the same. In an embodiment, a bit line is formed of copper using a damascene technique, and when the copper bit line, a copper stud may be formed around the copper bit line.Type: GrantFiled: November 18, 2008Date of Patent: February 26, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Kyung-Chang Ryoo, Jae-Hee Oh, Jung-Hoon Park, Hyeong-Jun Kim, Dong-Won Lim
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Publication number: 20120175580Abstract: A method of fabricating a phase change memory includes forming a lower electrode on a semiconductor substrate, forming a phase change pattern, an upper electrode, and a hard mask pattern sequentially on the lower electrode, a width of a bottom surface of the hard mask pattern being greater than a width of a top surface of the hard mask pattern, the bottom surface of the hard mask pattern facing the upper electrode and being opposite the top surface of the hard mask pattern, and forming a capping layer to cover the top surface of the hard mask pattern and sidewalls of the hard mask pattern, phase change pattern, and upper electrode.Type: ApplicationFiled: March 26, 2012Publication date: July 12, 2012Applicant: Samsung Electronics Co., Ltd.Inventors: Yoon-Jong SONG, Byung-Seo Kim, Kyung-Chang Ryoo