Patents by Inventor Yong Keun Jee
Yong Keun Jee 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: 10463220Abstract: A robot cleaner is disclosed. The robot cleaner includes an infrared sensor including a light emitting device configured to output an infrared ray to a floor and a light receiving device configured to receive the infrared ray reflected from the floor and convert the received infrared ray into an electric signal and output the electric signal; and a processor configured to determine an output voltage of the electrical signal if the electrical signal is received from the infrared sensor, control a travel direction of the robot cleaner based on the output voltage and a predetermined first threshold voltage, and control a suction mode of the robot cleaner based on the output voltage and a predetermined second threshold voltage, wherein the second threshold voltage is higher than the first threshold voltage.Type: GrantFiled: December 14, 2017Date of Patent: November 5, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-keun Jee, Hyeong-hwan Choi, Min-ji Kim, Jong-soon Kim, Hyeong-jun Kim
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Patent number: 10254263Abstract: A dust concentration display method is provided. The method includes (a) detecting a dust concentration through a dust sensor; (b) displaying a dew condensation message in a display in response to the detected dust concentration being equal to or more than a preset first dust concentration; and (c) detecting the dust concentration in real time for a preset time and displaying the dew condensation message in the display in response to the detected dust concentration being equal to or more than a preset second dust concentration.Type: GrantFiled: June 8, 2016Date of Patent: April 9, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Hyeong-hwan Choi, Yong-keun Jee
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Publication number: 20180168414Abstract: A robot cleaner is disclosed. The robot cleaner includes an infrared sensor including a light emitting device configured to output an infrared ray to a floor and a light receiving device configured to receive the infrared ray reflected from the floor and convert the received infrared ray into an electric signal and output the electric signal; and a processor configured to determine an output voltage of the electrical signal if the electrical signal is received from the infrared sensor, control a travel direction of the robot cleaner based on the output voltage and a predetermined first threshold voltage, and control a suction mode of the robot cleaner based on the output voltage and a predetermined second threshold voltage, wherein the second threshold voltage is higher than the first threshold voltage.Type: ApplicationFiled: December 14, 2017Publication date: June 21, 2018Inventors: Yong-keun JEE, Hyeong-hwan CHOI, Min-ji KIM, Jong-soon KIM, Hyeong-jun KIM
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Publication number: 20160356519Abstract: A dust concentration display method is provided. The method includes (a) detecting a dust concentration through a dust sensor; (b) displaying a dew condensation message in a display in response to the detected dust concentration being equal to or more than a preset first dust concentration; and (c) detecting the dust concentration in real time for a preset time and displaying the dew condensation message in the display in response to the detected dust concentration being equal to or more than a preset second dust concentration.Type: ApplicationFiled: June 8, 2016Publication date: December 8, 2016Inventors: Hyeong-hwan Choi, Yong-keun Jee
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Patent number: 9163805Abstract: There is provided a light emitting diode (LED) lens for double-sided lighting, including a light diffusion agent diffused therein, the LED lens including a light receiving portion receiving light, a first light transmitting portion corresponding to the light receiving portion and transmitting a portion of the light in an upward direction therefrom, a reflective portion extended from the first light transmitting portion and reflecting a portion of the light, and a second light transmitting portion facing the first light transmitting portion and transmitting the light reflected by the reflective portion in a downward direction therefrom.Type: GrantFiled: July 26, 2011Date of Patent: October 20, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Joo Hun Han, Je Myung Park, Hyun Do Park, Yong Keun Jee, Do Hyeon Lee, Ki Un Lee, Jin Tae Kim, Choul Ho Lee, Tetsuo Ariyoshi, Choong Gunn Park
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Patent number: 9107256Abstract: A light emitting diode (LED) lighting apparatus boosts alternating current (AC) power output from a ballast, rectifies the boosted AC power to direct current (DC) power, blocks generation of an inrush current while the boosted AC power is rectified, and controls an operation of an LED by using the DC power.Type: GrantFiled: September 24, 2012Date of Patent: August 11, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dae-sung Kang, Yun-whan Na, Yong-keun Jee, Seok-kyu Kim, Ki-hong Moon, Chung-hee Lee
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Publication number: 20150085503Abstract: An illuminating device includes a light source module; a heat radiator including a heat radiating plate having a cavity open toward a front surface thereof and receiving the light source module therein and ventilation holes disposed along an edge of the cavity, and heat radiating fins extending to a rear surface of the heat radiating plate, disposed in a radial manner along an edge of the heat radiating plate and positioned between the ventilation holes to form ventilation channels therebetween communicating with the ventilation holes; a cooler fixed to the heat radiator to be in contact with ends of the heat radiating fins and including air jet holes allowing air to be blown toward the heat radiator; and an electrical connector connected to the light source module and the cooler and supplying electrical signals thereto.Type: ApplicationFiled: August 23, 2011Publication date: March 26, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun Whan Na, Han Byul Chang, Yong Keun Jee, Kyu Cheol Kang, Choong Gunn Park, Jin Jong Kim, Tae Hong Lee, Choul Ho Lee
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Publication number: 20140218919Abstract: There is provided a light emitting diode (LED) lens for double-sided lighting, including a light diffusion agent diffused therein, the LED lens including a light receiving portion receiving light, a first light transmitting portion corresponding to the light receiving portion and transmitting a portion of the light in an upward direction therefrom, a reflective portion extended from the first light transmitting portion and reflecting a portion of the light, and a second light transmitting portion facing the first light transmitting portion and transmitting the light reflected by the reflective portion in a downward direction therefrom.Type: ApplicationFiled: July 26, 2011Publication date: August 7, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Joo Hun Han, Je Myung Park, Hyun Do Park, Yong Keun Jee, Do Hyeon Lee, Ki Un Lee, Jin Tae Kim, Choul Ho Lee, Tetsuo Ariyoshi, Choong Gunn Park
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Patent number: 8643299Abstract: An LED lamp driving circuit includes: a thermistor having one terminal through which an external voltage is applied; an AC-DC conversion unit connected to the other terminal of the thermistor and converting an AC voltage applied to the other terminal of the thermistor into a DC voltage; and a DC-DC conversion unit converting the DC voltage from the AC-DC conversion unit into a DC voltage required to drive the LED lamp.Type: GrantFiled: April 1, 2011Date of Patent: February 4, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Yong Keun Jee, Byung Kwan Song, Yun Whan Na, Jin Jong Kim, Sun Woo Im, Seok Kyu Kim, Hyun Kyung Kim
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Patent number: 8179031Abstract: A surface light source includes a plate type light source body having a sealed discharging space formed therein, a plate type electrode unit having a plurality of regions adjacent to at least one major surface of the light source body, and a multiple voltage applying unit operable to apply voltages independently to each of the plurality of regions. In this way, brightness of the surface light source can be controlled independently in each of the plurality of regions and a local dimming for a surface light source can be realized.Type: GrantFiled: September 18, 2007Date of Patent: May 15, 2012Assignee: Samsung Corning Precision Materials Co., Ltd.Inventors: Seok Mo Ban, Ki Yeon Lee, Kyeong Taek Jung, Hyung Bin Youn, Keun Seok Lee, Dong Hee Lee, Won Do Kee, Yong Keun Jee
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Publication number: 20120038289Abstract: An LED lamp driving circuit includes: a thermistor having one terminal through which an external voltage is applied; an AC-DC conversion unit connected to the other terminal of the thermistor and converting an AC voltage applied to the other terminal of the thermistor into a DC voltage; and a DC-DC conversion unit converting the DC voltage from the AC-DC conversion unit into a DC voltage required to drive the LED lamp.Type: ApplicationFiled: April 1, 2011Publication date: February 16, 2012Inventors: Yong Keun Jee, Byung Kwan Song, Yun Whan Na, Jin Jong Kim, Sun Woo Im, Seok Kyu Kim, Hyun Kyung Kim
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Publication number: 20080143667Abstract: There is a provided a surface light source device comprising: a light source body having an inner space therein in which a discharge gas is contained; a plurality of electrodes formed on the light source body in such a manner as to electrically divide the inner space into at least three blocks and applying discharge voltages to the blocks; and a driving unit sequentially applying the discharge voltages to the blocks through the electrodes in synchronization with a video signal of an external display device. The light source body may have a plurality of discharge spaces or a single discharge space therein. In accordance with the present invention, the surface light source device sequentially applies the discharge voltages to the blocks, and thereby can reduce an after-image occurring in a liquid crystal display device.Type: ApplicationFiled: December 10, 2007Publication date: June 19, 2008Applicant: Samsung Corning Co., Ltd.Inventors: Yong Keun Jee, Hun Suk Yoo, Hwan Woong Lee, Sang Soo Hwang