Patents by Inventor Byung-kwon Lee
Byung-kwon Lee 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: 20240175855Abstract: The present disclosure relates to a system for early detection of fire in an ESS battery module, particularly to a system capable of early fire detection of a battery module inside an ESS including: an air suction-type detector that is fitted to the exterior of the ESS and detects fire by introducing gas inside the ESS battery module; a suction line, of which one end is connected to the ESS battery module, sucks gas inside the ESS battery module in real time and introducing the gas into the air suction-type fire detector; a suction pump that is fitted to one side of the suction line and supplies power for drawing air from inside the ESS battery module into the suction line; and a multiple sensing unit that is fitted to one side of the suction line and senses a temperature of the gas introduced through the suction line, as well as any generated gas.Type: ApplicationFiled: May 15, 2023Publication date: May 30, 2024Inventors: Byung Kwon LEE, Hong Sun RYOU, Young Man LEE
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Publication number: 20240140815Abstract: The present invention relates to a method for preparing an inorganic compound using desulfurization gypsum for reducing greenhouse gas emissions, and, more specifically, to a method for preparing an inorganic compound, in which calcium sulfate and calcium carbonate, which have various uses as construction materials and the like, can be prepared using, as raw material, desulfurization gypsum which, being a recycled resource, is industrial waste, and an extraction agent, and the extraction agent can be reused after separation, and thus, compared to existing processes, greenhouse gases and manufacturing costs can be remarkably reduced.Type: ApplicationFiled: March 4, 2022Publication date: May 2, 2024Inventors: Young Ho LEE, Yong Kwon CHUNG, Byung Kwon YUN, Dae Jin SUNG, Cheol Hyun KIM
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Publication number: 20230327595Abstract: Provided is a transport system to minimize an interference between motors of a transport vehicle. The transport system comprises: a first motor controller corresponding to a first wheel and configured to generate a first current value; a first motor system configured to move based on the first current value and provide a first position value according to the movement; a disturbance observer configured to receive the first current value and the first position value and calculate a first disturbance value affecting the first motor system; a second motor controller corresponding to a second wheel and configured to generate a second current value; a compensation current generator configured to generate a second compensation current value based on the second current value and the first disturbance value; and a second motor system configured to move by the second compensation current value and provide a second position value according to the movement.Type: ApplicationFiled: December 30, 2022Publication date: October 12, 2023Inventors: Jun Beom LEE, Yeong Jae CHOE, Dong Hoon YANG, Byung Kwon LEE
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Publication number: 20220345580Abstract: An example image forming apparatus includes a fan, a fan driver to drive the fan, a switching controller, and a processor to output a pulse width modulated (PWM) control signal to control the fan driver. The switching controller may include a smoothing circuit to receive the PWM control signal output from the processor and convert the PWM control signal to a direct current signal, a comparator to compare a value of the direct current signal with a reference value and output a switch control signal, and a switch to provide power to the fan driver based on the switch control signal output from the comparator.Type: ApplicationFiled: December 3, 2021Publication date: October 27, 2022Inventors: Jun Young LEE, Young Jun CHOI, Byung Kwon LEE
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Patent number: 11434845Abstract: An industrial vehicle work guide system is disclosed. An industrial vehicle work guide system according to an embodiment of the present invention includes: a memory configured to store engine used data, a driving time, a fuel consumption amount, and reference fuel efficiency; a display module configured to output a guide message; and an analysis module configured to calculate actual fuel efficiency by using the engine used data, the driving time, and the fuel consumption amount, compare the actual fuel efficiency with the reference fuel efficiency, and control the display module so that the display module outputs a guide message when the actual fuel efficiency is lower than the reference fuel efficiency.Type: GrantFiled: August 2, 2017Date of Patent: September 6, 2022Assignee: DOOSAN INDUSTRIAL VEHICLE CO., LTD.Inventor: Byung Kwon Lee
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Patent number: 11380178Abstract: The present invention relates to a photoelectric smoke detector having a double-bulkhead darkroom structure and, more particularly, to a photoelectric smoke detector having a double-bulkhead darkroom structure, comprising: a base having, on one side thereof, a light emitting element receiving part in which a light emitting element for irradiating light to the inside thereof is mounted and, on the other side thereof, a light receiving element part in which a light element for receiving scattered light generated by smoke particles from the light irradiated by the light emitting element is mounted; an outer bulkhead which protrudes toward a lower side of the base to form an outer wall of the smoke detector and in which a smoke inlet having a specific height is formed in a circumferential direction; a lower end surface coupled to a lower end of the outer bulkhead; and an inner bulkhead which protrudes from the lower end surface to an upper side, is disposed to be spaced apart from the outer bulkhead at a specificType: GrantFiled: November 11, 2016Date of Patent: July 5, 2022Inventor: Byung Kwon Lee
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Publication number: 20210372341Abstract: Disclosed is an industrial vehicle work guide system. An industrial vehicle work guide system according to an embodiment of the present invention includes: a memory configured to store engine used data, a driving time, a fuel consumption amount, and reference fuel efficiency; a display module configured to output a guide message; and an analysis module configured to calculate actual fuel efficiency by using the engine used data, the driving time, and the fuel consumption amount, compare the actual fuel efficiency with the reference fuel efficiency, and control the display module so that the display module outputs a guide message when the actual fuel efficiency is lower than the reference fuel efficiency.Type: ApplicationFiled: August 2, 2017Publication date: December 2, 2021Applicant: DOOSAN CORPORATIONInventor: Byung Kwon LEE
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Publication number: 20200388127Abstract: The present invention relates to a photoelectric smoke detector having a double-bulkhead darkroom structure and, more particularly, to a photoelectric smoke detector having a double-bulkhead darkroom structure, comprising: a base having, on one side thereof, a light emitting element receiving part in which a light emitting element for irradiating light to the inside thereof is mounted and, on the other side thereof, a light receiving element part in which a light element for receiving scattered light generated by smoke particles from the light irradiated by the light emitting element is mounted; an outer bulkhead which protrudes toward a lower side of the base to form an outer wall of the smoke detector and in which a smoke inlet having a specific height is formed in a circumferential direction; a lower end surface coupled to a lower end of the outer bulkhead; and an inner bulkhead which protrudes from the lower end surface to an upper side, is disposed to be spaced apart from the outer bulkhead at a specificType: ApplicationFiled: November 11, 2016Publication date: December 10, 2020Inventor: Byung Kwon Lee
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Publication number: 20190218083Abstract: A forklift according to an exemplary embodiment of the present disclosure includes: a first hydraulic pump and a second hydraulic pump each of which generates a working fluid; a lift cylinder which raises or lowers a carriage; a first hydraulic line which supplies the working fluid from the first hydraulic pump to the lift cylinder and a second hydraulic line which supplies the working fluid from the second hydraulic pump to the lift cylinder; a first lift spool which controls the working fluid to be supplied to the lift cylinder through the first hydraulic line and a second lift spool which controls the working fluid to be supplied to the lift cylinder through the second hydraulic line; a first pilot line which transmits a pilot signal for operating the first lift spool and a second pilot line which transmits a pilot signal for operating the second lift spool; and an opening/closing valve which selectively closes any one of the first pilot line and the second pilot line.Type: ApplicationFiled: August 24, 2017Publication date: July 18, 2019Applicant: DOOSAN CORPORATIONInventors: Deok Rae KIM, Yong Seok RYU, Byung Kwon LEE, Jun Il YI
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Patent number: 10071637Abstract: A pulse width modulation resonance converter is provided that includes a transformer and a switching unit including first to fourth switches electrically connected to a primary coil of the transformer and configured to convert a DC voltage into an AC voltage by a switching operation of the first to fourth switches in which each switch is switched from an off state to an on state when a voltage difference between both ends is about 0. Additionally, a rectifying unit includes an output capacitor, first to fourth diodes electrically connected to a secondary coil of the transformer, and a resonance tank having a resonance capacitor and a resonance inductor which are electrically connected to the secondary coil of the transformer. The plurality of switches connected to the primary side of the transformer perform the zero-voltage switching using the magnetized inductance of the primary side to minimize the switching loss.Type: GrantFiled: November 16, 2014Date of Patent: September 11, 2018Assignees: Hyundai Motor Company, Myongji University Industry and Academia Cooperation Foundation, Kia Motors CorporationInventors: Jong Pil Kim, Seok Joon Kim, Sam Gyun Kim, Woo Young Lee, June Young Lee, Byung Kwon Lee
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Publication number: 20170247238Abstract: The present disclosure relates to a hydraulic circuit for a forklift, and more particularly, to a hydraulic circuit for a forklift which is capable of preventing an engine from being stopped due to surge pressure that instantaneously occurs when a lift cylinder reaches an end stroke and thus cannot be operated any further when the lift cylinder is extended. According to the hydraulic circuit for a forklift according to the exemplary embodiment of the present disclosure, which is configured as described above, the accumulator is provided on the hydraulic line through which the working fluid is provided to the lift cylinder, and as a result, the accumulator may quickly absorb surge pressure when the surge pressure is produced in the lift cylinder or the hydraulic line.Type: ApplicationFiled: August 25, 2015Publication date: August 31, 2017Applicant: DOOSAN CORPORATIONInventor: Byung Kwon LEE
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Publication number: 20160001665Abstract: A pulse width modulation resonance converter is provided that includes a transformer and a switching unit including first to fourth switches electrically connected to a primary coil of the transformer and configured to convert a DC voltage into an AC voltage by a switching operation of the first to fourth switches in which each switch is switched from an off state to an on state when a voltage difference between both ends is about 0. Additionally, a rectifying unit includes an output capacitor, first to fourth diodes electrically connected to a secondary coil of the transformer, and a resonance tank having a resonance capacitor and a resonance inductor which are electrically connected to the secondary coil of the transformer. The plurality of switches connected to the primary side of the transformer perform the zero-voltage switching using the magnetized inductance of the primary side to minimize the switching loss.Type: ApplicationFiled: November 16, 2014Publication date: January 7, 2016Inventors: Jong Pil Kim, Seok Joon Kim, Sam Gyun Kim, Woo Young Lee, June Young Lee, Byung Kwon Lee
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Patent number: 8368764Abstract: A digital photographing apparatus capable of precisely and immediately performing autofocusing on a person being photographed, and a method of controlling the same are provided. The digital photographing apparatus comprises a face detecting unit that detects a face, a body detecting unit that detects a body, which may or may not exclude the face, an autofocus information obtaining unit, and an autofocus object determining unit. The autofocus object determining unit analyzes face autofocus information obtained from the face by the autofocus information obtaining unit and body autofocus information obtained from the body, and then selects the face part and/or the body as an object of autofocusing.Type: GrantFiled: October 16, 2007Date of Patent: February 5, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Dong Yi, Byung-kwon Lee
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Publication number: 20080170129Abstract: A digital photographing apparatus capable of precisely and immediately performing autofocusing on a person being photographed, and a method of controlling the same are provided. The digital photographing apparatus comprises a face detecting unit that detects a face, a body detecting unit that detects a body, which may or may not exclude the face, an autofocus information obtaining unit, and an autofocus object determining unit. The autofocus object determining unit analyzes face autofocus information obtained from the face by the autofocus information obtaining unit and body autofocus information obtained from the body, and then selects the face part and/or the body as an object of autofocusing.Type: ApplicationFiled: October 16, 2007Publication date: July 17, 2008Applicant: Samsung Techwin Co., Ltd.Inventors: Dong Yi, Byung-kwon Lee
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Patent number: 7339613Abstract: A method of controlling a digital camera includes performing photographing of an object, determining whether the amount of exposure is appropriate and shakiness is present, and notifying a user of such information if the amount of exposure is not appropriate or shakiness is present. The determination step includes reading a focus value of the object, reading a lower limit value of a compressed file size set to correspond to the read focus value of the object at a compression rate and a resolution set by the user, and determining that the amount of exposure is not appropriate and shakiness is present if the size of a present compressed file of image data obtained from the photographing is smaller than the lower limit value of the compressed file size.Type: GrantFiled: February 10, 2004Date of Patent: March 4, 2008Assignee: Samsung Techwin Co., Ltd.Inventors: Byung-kwon Lee, Byung-deok Nam
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Patent number: 7268817Abstract: A method of automatically focusing a camera determines a position of a focus lens where an amount of a high frequency in an image signal is a maximum. The amount of a high frequency included in an image signal is measured at intervals of multiple focus motor steps. Three of the measured positions (x1, x2, x3) and their corresponding measured high frequency amounts (y1, y2, y3) are identified, where y2 is the largest of the measured high frequency amounts, and x1 and x3 are the nearest measured positions on either side of x2. A quadratic function f(x) is determined for the high frequency amount with respect to the focus lens position x. A position at which a derivative ? f ? ( x ) ? x of the quadratic function f(x) is zero, is determined to be the position corresponding to maximum high frequency amount. Thus, the driving time of the focus motor can be reduced.Type: GrantFiled: October 9, 2003Date of Patent: September 11, 2007Assignee: Samsung Techwin Co., Ltd.Inventors: Byung-kwon Lee, Soon-hac Hong
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Publication number: 20040169768Abstract: A method of controlling a digital camera includes performing photographing of an object, determining whether the amount of exposure is appropriate and shakiness is present, and notifying a user of such information if the amount of exposure is not appropriate or shakiness is present. The determination step includes reading a focus value of the object, reading a lower limit value of a compressed file size set to correspond to the read focus value of the object at a compression rate and a resolution set by the user, and determining that the amount of exposure is not appropriate and shakiness is present if the size of a present compressed file of image data obtained from the photographing is smaller than the lower limit value of the compressed file size.Type: ApplicationFiled: February 10, 2004Publication date: September 2, 2004Applicant: Samsung Techwin Co., Ltd.Inventors: Byung-kwon Lee, Byung-deok Nam
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Publication number: 20040130650Abstract: A method of automatically focusing a camera determines a position of a focus lens where an amount of a high frequency in an image signal is a maximum. The amount of a high frequency included in an image signal is measured at intervals of multiple focus motor steps. Three of the measured positions (x1, x2, x3) and their corresponding measured high frequency amounts (y1, y2, y3) are identified, where y2 is the largest of the measured high frequency amounts, and x1 and x3 are the nearest measured positions on either side of x2. A quadratic function f(x) is determined for the high frequency amount with respect to the focus lens position x.Type: ApplicationFiled: October 9, 2003Publication date: July 8, 2004Applicant: Samsung Techwin Co., Ltd.Inventors: Byung-kwon Lee, Soon-hac Hong