Patents by Inventor Jae-hyeok Jang
Jae-hyeok Jang 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: 11971671Abstract: A fusing apparatus includes: a pressing roller to be axially rotated; a fusing belt to rotate by receiving a rotational force from the pressing roller; a pressing member to press toward the pressing roller from the inside of the fusing belt to form a nip in which the printing paper is nipped between the fusing belt and the pressing roller; on the fusing belt or the pressing member, a sliding layer to reduce friction between the fusing belt and the pressing member; and an adhesive layer to adhere the sliding layer to the fusing belt or the pressing member.Type: GrantFiled: December 28, 2020Date of Patent: April 30, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Sun Hyung Lee, Sea Chul Bae, Jae Hyeok Jang, Jin Gyu Ko
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Publication number: 20230048699Abstract: A fusing apparatus includes: a pressing roller to be axially rotated; a fusing belt to rotate by receiving a rotational force from the pressing roller; a pressing member to press toward the pressing roller from the inside of the fusing belt to form a nip in which the printing paper is nipped between the fusing belt and the pressing roller; on the fusing belt or the pressing member, a sliding layer to reduce friction between the fusing belt and the pressing member; and an adhesive layer to adhere the sliding layer to the fusing belt or the pressing member.Type: ApplicationFiled: December 28, 2020Publication date: February 16, 2023Inventors: Sun Hyung LEE, Sea Chul BAE, Jae Hyeok JANG, Jin Gyu KO
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Patent number: 11551069Abstract: An image filtering processing system includes a temporary memory; a flow controller configured to control a feature and a weight to be stored at a point of the temporary memory, and, when at least one of the feature and the weight has a value of 0, to control next feature and next weight to be overwritten at the point; and a processing element configured to perform a multiplication operation on a value of the feature and a value of the weight in the temporary memory and an addition operation on the multiplication result.Type: GrantFiled: October 31, 2019Date of Patent: January 10, 2023Assignee: SK hynix Inc.Inventor: Jae-Hyeok Jang
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Patent number: 11294628Abstract: A processing element may include a pre-processing circuit configured to receive and filter a feature and a weight and output a filtered feature and a filtered weight; and an accumulation circuit configured to accumulate a value of the filtered feature, wherein the pre-processing circuit comprises: a sign conversion circuit configured to change a sign of the feature and a sign of the weight when the weight having a value of ?1; and a zero filtering circuit configured to change a value of the weight to 0 when the feature having a value of 0.Type: GrantFiled: December 3, 2019Date of Patent: April 5, 2022Assignee: SK hynix Inc.Inventor: Jae-Hyeok Jang
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Patent number: 10990354Abstract: An accelerating device includes a signal detector that converts a first input signal and a second input signal into a first converted input signal and a second converted input signal, respectively, and that generates a final zero-value flag signal, a first one-value flag signal, and a second one-value flag signal. The accelerating device further includes a processing element (PE) that processes the first converted input signal and the second converted input signal based on the final zero-value flag signal, the first one-value flag signal, and the second one-value flag signal and that skips a first arithmetic operation and a second arithmetic operation when the final zero-value flag signal has a first value. The first value of the final zero-value flag signal indicates that the first input signal, or the second input signal, or both have a value of 0.Type: GrantFiled: September 12, 2019Date of Patent: April 27, 2021Assignee: SK hynix Inc.Inventor: Jae Hyeok Jang
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Publication number: 20200342294Abstract: A neural network accelerating apparatus includes a zero-value filter configured to filter a zero (0) value by applying a weight to an input feature and generate compressed packet data by matching index information including relative coordinates and group boundary information for data elements of the input feature, a multiplier configured to produce result data by performing a multiplication operation on the input feature and the weight of the compressed packet data, and a feature map extractor configured to perform an addition operation between multiplied result data based on the relative coordinates and the group boundary information of the result data transferred from the multiplier and generate an output feature map by rearranging result values of the addition operation.Type: ApplicationFiled: November 26, 2019Publication date: October 29, 2020Inventor: Jae Hyeok JANG
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Publication number: 20200334013Abstract: A processing element may include a pre-processing circuit configured to receive and filter a feature and a weight and output a filtered feature and a filtered weight; and an accumulation circuit configured to accumulate a value of the filtered feature, wherein the pre-processing circuit comprises: a sign conversion circuit configured to change a sign of the feature and a sign of the weight when the weight having a value of ?1; and a zero filtering circuit configured to change a value of the weight to 0 when the feature having a value of 0.Type: ApplicationFiled: December 3, 2019Publication date: October 22, 2020Inventor: Jae-Hyeok JANG
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Publication number: 20200301665Abstract: An accelerating device includes a signal detector that converts a first input signal and a second input signal into a first converted input signal and a second converted input signal, respectively, and that generates a final zero-value flag signal, a first one-value flag signal, and a second one-value flag signal. The accelerating device further includes a processing element (PE) that processes the first converted input signal and the second converted input signal based on the final zero-value flag signal, the first one-value flag signal, and the second one-value flag signal and that skips a first arithmetic operation and a second arithmetic operation when the final zero-value flag signal has a first value. The first value of the final zero-value flag signal indicates that the first input signal, or the second input signal, or both have a value of 0.Type: ApplicationFiled: September 12, 2019Publication date: September 24, 2020Inventor: Jae Hyeok JANG
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Publication number: 20200272585Abstract: There are provided a memory controller and a memory system having the same. The memory controller is included in the memory system for storing data and transmits data between the memory system and a host system. The memory controller includes: a buffer including a plurality of blocks for storing the data, the buffer inputting or outputting the data through a first bus having a first data width or a second bus having a second data width; and a data width controller for mapping the blocks according to the first and second data widths.Type: ApplicationFiled: October 14, 2019Publication date: August 27, 2020Applicant: SK hynix Inc.Inventors: Joo Young KIM, Yong Sang PARK, Jae Hyeok JANG, Young Jae JIN
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Publication number: 20200210819Abstract: An image filtering processing system includes a temporary memory; a flow controller configured to control a feature and a weight to be stored at a point of the temporary memory, and, when at least one of the feature and the weight has a value of 0, to control next feature and next weight to be overwritten at the point; and a processing element configured to perform a multiplication operation on a value of the feature and a value of the weight in the temporary memory and an addition operation on the multiplication result.Type: ApplicationFiled: October 31, 2019Publication date: July 2, 2020Inventor: Jae-Hyeok JANG
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Publication number: 20200034699Abstract: An accelerating apparatus for a neural network may include: an input processor configured to decide a computation mode according to precision of an input signal, and change or maintain the precision of the input signal according to the decided computation mode; and a computation circuit configured to receive the input signal from the input processor, perform select one or more operations among multiple operations including a multiplication based on the input signal, boundary migration to rearrange multiple signals divided from the input signal, and an addition of the input signal subjected to the boundary migration, according to the computation mode, and perform the selected one or more operations on the input signal.Type: ApplicationFiled: July 23, 2019Publication date: January 30, 2020Inventors: Jae Hyeok JANG, Joo Young KIM, Eui Cheol LIM
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Patent number: 8712313Abstract: Disclosed herein is an image forming apparatus. The image forming apparatus includes a fixing device configured to fix a visible image transferred on a printing medium, a decurl device configured to correct a curl produced on the printing medium, a discharging device configured to discharge the printing medium to a space outside of a main body of the image forming apparatus, and a guide device disposed between the fixing device and the discharging device. The guide device guides the printing medium around the decurl device when a transport direction of the printing medium is reversed for duplex printing.Type: GrantFiled: October 21, 2009Date of Patent: April 29, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Tae Hoon Kim, Jae Hyeok Jang
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Patent number: 8369719Abstract: An image forming apparatus that is capable of preventing a damage to a fusing belt or hazardous conditions due to the overheating of the fusing belt and a fusing device thereof are disclosed. The image forming apparatus has a fusing device including a fusing belt, a heat source disposed in the fusing belt, a support member to support the fusing belt, the support member having an opening through which heat emitted from the heat source passes to at least a portion of the fusing belt, and a first temperature sensor positioned to measure temperature of the fusing belt at the portion directly heated by radiant heat transmitted through the opening. A control unit of the image forming apparatus controls the heat source based on the temperature measured by the first temperature sensor.Type: GrantFiled: December 30, 2008Date of Patent: February 5, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Dong Jin Seol, Tae Gyu Kim, Chang Hoon Jung, Jae Hyeok Jang, Seung Jun Lee
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Patent number: 8221829Abstract: The present invention relates to a method for preparing a Prussian blue coating film for an electrochromic device, more particularly to a method for preparing a Prussian blue coating film for an electrochromic device comprising an electrochromic layer coated on a light transmitting substrate including a coating of a transparent electrode, an ion storage layer coated on another light transmitting substrate including a coating of a transparent electrode and an electrolyte layer formed between the electrochromic layer and the ion storage layer, wherein the ion storage layer is formed with a specific nano-dispersed composition comprising Prussian blue by wet coating, thereby providing comparable or better physical properties, including light transmittance, response time, durability, etc., when compared with the conventional electrochemical techniques, simplifying the manufacturing processes and significantly improving the productivity.Type: GrantFiled: January 30, 2007Date of Patent: July 17, 2012Assignee: SKC Co., Ltd.Inventors: Jae Hyeok Jang, Seungwon Lee, Chang Soo Shin
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Publication number: 20100233356Abstract: The present invention relates to a method for preparing a Prussian blue coating film for an electrochromic device, more particularly to a method for preparing a Prussian blue coating film for an electrochromic device comprising an electrochromic layer coated on a light transmitting substrate including a coating of a transparent electrode, an ion storage layer coated on another light transmitting substrate including a coating of a transparent electrode and an electrolyte layer formed between the electrochromic layer and the ion storage layer, wherein the ion storage layer is formed with a specific nano-dispersed composition comprising Prussian blue by wet coating, thereby providing comparable or better physical properties, including light transmittance, response time, durability, etc., when compared with the conventional electrochemical techniques, simplifying the manufacturing processes and significantly improving the productivity.Type: ApplicationFiled: January 30, 2007Publication date: September 16, 2010Inventors: Jae Hyeok Jang, Seungwon Lee, Chang Soo Shin
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Publication number: 20100143014Abstract: Disclosed herein is an image forming apparatus. The image forming apparatus includes a fixing device configured to fix a visible image transferred on a printing medium, a decurl device configured to correct a curl produced on the printing medium, a discharging device configured to discharge the printing medium to a space outside of a main body of the image forming apparatus, and a guide device disposed between the fixing device and the discharging device. The guide device guides the printing medium around the decurl device when a transport direction of the printing medium is reversed for duplex printing.Type: ApplicationFiled: October 21, 2009Publication date: June 10, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae Hoon Kim, Jae Hyeok Jang
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Patent number: 7565089Abstract: A fusing roller and a fusing device using the fusing roller. The fusing roller applies heat to a toner image and fuses the toner image onto a piece of paper and is heated by a coil connected to an external power source. The fusing roller includes a pair of end caps which are provided at opposite ends of the fusing roller, a connection electrode which is disposed in one of the end caps and connected to the external power source, and an adherence member which is coupled with the connection electrode, and having an end portion of the coil disposed between the adherence member and the connection electrode to ensure an electric connection between the coil and the connection electrode.Type: GrantFiled: May 4, 2006Date of Patent: July 21, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-hyeok Jang, Hwan-guem Kim
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Publication number: 20090175645Abstract: An image forming apparatus that is capable of preventing a damage to a fusing belt or hazardous conditions due to the overheating of the fusing belt and a fusing device thereof are disclosed. The image forming apparatus has a fusing device including a fusing belt, a heat source disposed in the fusing belt, a support member to support the fusing belt, the support member having an opening through which heat emitted from the heat source passes to at least a portion of the fusing belt, and a first temperature sensor positioned to measure temperature of the fusing belt at the portion directly heated by radiant heat transmitted through the opening. A control unit of the image forming apparatus controls the heat source based on the temperature measured by the first temperature sensor.Type: ApplicationFiled: December 30, 2008Publication date: July 9, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dong Jin SEOL, Tae Gyu Kim, Chang Hoon Jung, Jae Hyeok Jang, Seung Jun Lee
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Patent number: 7505727Abstract: A fixing roller of an image forming apparatus includes a roller body having a pipe form. A coil assembly is mounted within the roller body and has an induction coil, and an inside and outside thereof are coated with insulators. A pressing pipe is mounted to the roller body to tightly bias the coil assembly toward an inner surface of the roller body. The pressing pipe has a cut away portion along a lengthwise direction to contract and expand in a circumferential direction.Type: GrantFiled: March 22, 2006Date of Patent: March 17, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-hyeok Jang, Hwan-geum Kim, Gyu-seob Song
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Patent number: 7421236Abstract: A fixing unit, and an image forming apparatus having the fixing unit. The fixing unit includes a heat roller including a heat source therein, one or more pressing rollers in close contact with the heat roller, an elastic body to elastically apply pressure on both ends of the one or more pressing rollers with respect to the heat roller, a backup member to contact a central portion of the one or more pressing rollers and to apply pressure to the central portion in a longitudinal direction of the one or more pressing rollers, and a backup elastic body to elastically press the backup member towards the heat roller.Type: GrantFiled: July 11, 2006Date of Patent: September 2, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-hyeok Jang, Dong-kyun Kang, Seung-jun Lee