Patents by Inventor Kuan-Hsien Tu
Kuan-Hsien Tu 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: 11974367Abstract: A lighting device includes a light board and a light dimmer circuit. The light board includes multiple first light emitting elements and second light emitting elements. The first light emitting elements are disposed in a first area of the light board. The second light emitting elements are disposed in a second area of the light board. The light dimmer circuit is configured to drive the second light emitting elements to generate flickering lights from the second area of the light board, and is configured to drive the first light emitting elements to generate non-flickering lights from the first area of the light board.Type: GrantFiled: October 4, 2022Date of Patent: April 30, 2024Assignee: DELTA ELECTRONICS, INC.Inventors: Chih-Hsien Wang, Ming-Chieh Cheng, Po-Yen Chen, Shih-Chieh Chang, Kuan-Hsien Tu, Xiu-Yi Lin, Ling-Chun Wang
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Patent number: 11962426Abstract: An Ethernet power supply receives a DC voltage through a bus positive terminal and a bus negative terminal, and is coupled to a load device. The Ethernet power supply includes a first control module and a second control module. The first control module is used to provide a first control signal through the bus negative terminal to confirm whether the load device is a valid load. The second control module is used to connect or disconnect a coupling relationship between the bus positive terminal and the first control module according to the load device being connected or not.Type: GrantFiled: May 25, 2022Date of Patent: April 16, 2024Assignee: DELTA ELECTRONICS, INC.Inventors: Yung-Wei Peng, Kuan-Hsien Tu, Cheng-En Liu
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Patent number: 11953964Abstract: An Ethernet power supply receives a DC voltage through a bus positive terminal and a bus negative terminal, and is coupled to a load device. The Ethernet power supply includes a first control module and a second control module. The first control module provides a first control signal through the bus negative terminal to confirm whether the load device is a valid load. The second control module is used to connect or disconnect a coupling relationship between the bus positive terminal and the first control module according to whether the load device is connected to the Ethernet power supply.Type: GrantFiled: June 2, 2022Date of Patent: April 9, 2024Assignee: DELTA ELECTRONICS, INC.Inventors: Yung-Wei Peng, Kuan-Hsien Tu, Cheng-En Liu
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Publication number: 20230383929Abstract: A lighting device includes a board, first light emitting elements and second light emitting elements. The first light emitting elements emit lights in a first spectral range. The second light emitting elements emit lights in a second spectral range. The second spectral range is narrow than the first spectral range. The first light emitting elements are disposed in at least one first area of the board, and the second light emitting elements are disposed in second areas of the board. The at least one first area and the second areas are alternatively arranged on the board.Type: ApplicationFiled: April 13, 2023Publication date: November 30, 2023Inventors: Chih-Hsien WANG, Po-Yen CHEN, Ming-Chieh CHENG, Shih-Chieh CHANG, Kuan-Hsien TU, Pin-Chen LAI, Xiu-Yi LIN
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Publication number: 20230337340Abstract: A lighting device includes a light board and a light dimmer circuit. The light board includes multiple first light emitting elements and second light emitting elements. The first light emitting elements are disposed in a first area of the light board. The second light emitting elements are disposed in a second area of the light board. The light dimmer circuit is configured to drive the second light emitting elements to generate flickering lights from the second area of the light board, and is configured to drive the first light emitting elements to generate non-flickering lights from the first area of the light board.Type: ApplicationFiled: October 4, 2022Publication date: October 19, 2023Inventors: Chih-Hsien WANG, Ming-Chieh CHENG, Po-Yen CHEN, Shih-Chieh CHANG, Kuan-Hsien TU, Xiu-Yi LIN, Ling-Chun WANG
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Publication number: 20230179436Abstract: An Ethernet power supply receives a DC voltage through a bus positive terminal and a bus negative terminal, and is coupled to a load device. The Ethernet power supply includes a first control module and a second control module. The first control module is used to provide a first control signal through the bus negative terminal to confirm whether the load device is a valid load. The second control module is used to connect or disconnect a coupling relationship between the bus positive terminal and the first control module according to the load device being connected or not.Type: ApplicationFiled: May 25, 2022Publication date: June 8, 2023Inventors: Yung-Wei PENG, Kuan-Hsien TU, Cheng-En LIU
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Publication number: 20230180450Abstract: An Ethernet power supply receives a DC voltage through a bus positive terminal and a bus negative terminal, and is coupled to a load device. The Ethernet power supply includes a first control module and a second control module. The first control module provides a first control signal through the bus negative terminal to confirm whether the load device is a valid load. The second control module is used to connect or disconnect a coupling relationship between the bus positive terminal and the first control module according to whether the load device is connected to the Ethernet power supply.Type: ApplicationFiled: June 2, 2022Publication date: June 8, 2023Inventors: Yung-Wei PENG, Kuan-Hsien TU, Cheng-En LIU
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Patent number: 11576993Abstract: An ultraviolet air germicidal lamp system includes a base frame including an air inlet and an air outlet, an ultraviolet germicidal module on the base frame, and a lamp module in the base frame. The ultraviolet germicidal module includes a fan, an inlet duct, an ultraviolet lamp module including a cavity and ultraviolet lamps in the cavity, and an outlet duct. The fan is connected to the air inlet. The intake of the cavity of the ultraviolet lamp module is connected to the fan by the inlet duct. The vent of the cavity of the ultraviolet lamp module is connected to the air outlet by the outlet duct. The body diameter of the cavity is larger than the diameters of the inlet duct and the outlet duct.Type: GrantFiled: April 27, 2021Date of Patent: February 14, 2023Assignee: DELTA ELECTRONICS, INC.Inventors: Pin-Chen Lai, Chih-Hsien Wang, Kuan-Hsien Tu
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Publication number: 20220111106Abstract: An ultraviolet air germicidal lamp system includes a base frame including an air inlet and an air outlet, an ultraviolet germicidal module on the base frame, and a lamp module in the base frame. The ultraviolet germicidal module includes a fan, an inlet duct, an ultraviolet lamp module including a cavity and ultraviolet lamps in the cavity, and an outlet duct. The fan is connected to the air inlet. The intake of the cavity of the ultraviolet lamp module is connected to the fan by the inlet duct. The vent of the cavity of the ultraviolet lamp module is connected to the air outlet by the outlet duct. The body diameter of the cavity is larger than the diameters of the inlet duct and the outlet duct.Type: ApplicationFiled: April 27, 2021Publication date: April 14, 2022Inventors: Pin-Chen LAI, Chih-Hsien WANG, Kuan-Hsien TU
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Patent number: 11212122Abstract: A power source device coupled to a power device includes an output port and a controller. When the output port is coupled to a connection cable, the controller is activated to generate a handshake signal, so as to communicate with the power device. When it is determined that the power device is able to be powered according to the handshake signal, the controller controls the power supply device to power the power device through the connection cable. When the connection cable is not coupled to the output port, the controller is deactivated and thus the handshake signal is not generated.Type: GrantFiled: July 13, 2020Date of Patent: December 28, 2021Assignee: DELTA ELECTRONICS, INC.Inventors: Yung-Wei Peng, Kuan-Hsien Tu, Yen-Lun Wu, Cheng-En Liu, Hsuan-Chen Lin
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Publication number: 20210126804Abstract: A power source device coupled to a power device includes an output port and a controller. When the output port is coupled to a connection cable, the controller is activated to generate a handshake signal, so as to communicate with the power device. When it is determined that the power device is able to be powered according to the handshake signal, the controller controls the power supply device to power the power device through the connection cable. When the connection cable is not coupled to the output port, the controller is deactivated and thus the handshake signal is not generated.Type: ApplicationFiled: July 13, 2020Publication date: April 29, 2021Inventors: Yung-Wei PENG, Kuan-Hsien TU, Yen-Lun WU, Cheng-En LIU, Hsuan-Chen LIN
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Patent number: 10505388Abstract: A power converting device includes an AC/DC converter, a switch, and a controlling unit. The AC/DC converter converts AC power into a DC voltage, and provides the DC voltage to a load. The switch is coupled to a backup power source. The controlling unit receives the DC voltage. If the DC voltage is less than a predetermined voltage or a decrease of the DC voltage is greater than a predetermined percentage of the DC voltage and the controlling unit receives a voltage command signal of the backup power source, the controlling unit turns on the switch for providing the backup power source to the load.Type: GrantFiled: December 12, 2016Date of Patent: December 10, 2019Assignee: DELTA ELECTRONICS, INC.Inventors: Kuan-Hsien Tu, Yung-Wei Peng, So-Huan Chiang
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Publication number: 20180375674Abstract: A judgement unit applied in a Power over Ethernet (PoE) device is disclosed herein. The judgement unit is configured to determine whether the PoE device is coupled to a load. If the judgement unit determines that the PoE device is not coupled to the load, a definite time handshaking activation signal is outputted for activating a definite time handshaking communication mode of the PoE device so as to communicate with the load in a definite time handshaking manner.Type: ApplicationFiled: November 6, 2017Publication date: December 27, 2018Inventors: Kuan-Hsien TU, Yung-Wei PENG, So-Huan CHIANG
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Patent number: 10165645Abstract: An LED lighting module comprises a plurality of serially-connected LED strings, which include N LED strings from a first LED string to an Nth LED string, and each LED string has a specific driven voltage. The control method comprises steps of: (a) receiving an AC voltage signal and converting the AC input signal into a first AC signal; (b) receiving the first AC signal and converting the first AC signal into a first DC signal; and (c) if the first DC signal exceeds the sum of the driven voltages from the first LED string to an nth LED string, driving the serially-connected LED strings from the first LED string to the nth LED string sequentially, wherein n is smaller than or equal to N, so as to adjust the correlated color temperature of the light emitted by the LED lighting module.Type: GrantFiled: October 13, 2017Date of Patent: December 25, 2018Assignee: DELTA ELECTRONICS, INC.Inventors: Kuan-Hsien Tu, Ying-Hao Huang
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Publication number: 20180042082Abstract: An LED lighting module comprises a plurality of serially-connected LED strings, which include N LED strings from a first LED string to an Nth LED string, and each LED string has a specific driven voltage. The control method comprises steps of: (a) receiving an AC voltage signal and converting the AC input signal into a first AC signal; (b) receiving the first AC signal and converting the first AC signal into a first DC signal; and (c) if the first DC signal exceeds the sum of the driven voltages from the first LED string to an nth LED string, driving the serially-connected LED strings from the first LED string to the nth LED string sequentially, wherein n is smaller than or equal to N, so as to adjust the correlated color temperature of the light emitted by the LED lighting module.Type: ApplicationFiled: October 13, 2017Publication date: February 8, 2018Inventors: Kuan-Hsien Tu, Ying-Hao Huang
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Publication number: 20170366043Abstract: A power converting device includes an AC/DC converter, a switch, and a controlling unit. The AC/DC converter converts AC power into a DC voltage, and provides the DC voltage to a load. The switch is coupled to a backup power source. The controlling unit receives the DC voltage. If the DC voltage is less than a predetermined voltage or a decrease of the DC voltage is greater than a predetermined percentage of the DC voltage and the controlling unit receives a voltage command signal of the backup power source, the controlling unit turns on the switch for providing the backup power source to the load.Type: ApplicationFiled: December 12, 2016Publication date: December 21, 2017Inventors: Kuan-Hsien TU, Yung-Wei PENG, So-Huan CHIANG
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Publication number: 20170006684Abstract: A LED lighting module having tunable correlated color temperature and control method thereof is disclosed. The control method comprises steps of: (a) receiving an AC voltage signal and converting the AC input signal into a first AC signal; (b) receiving the first AC signal and converting the first AC signal into a first DC signal; (c) comparing the first DC signal with a plurality of reference voltages by the control unit, wherein the reference voltages comprise driven voltages of one of the LED strings or driven voltages of serially-connected LED strings; and (d) if the first DC signal exceeds the reference voltage of the corresponding LED string or the corresponding serially-connected LED strings, the corresponding LED string or the corresponding serially-connected LED strings is driven so as to adjust the correlated color temperature of the light emitted by the LED lighting module.Type: ApplicationFiled: June 21, 2016Publication date: January 5, 2017Inventors: Kuan-Hsien Tu, Ying-Hao Huang
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Patent number: 7777243Abstract: A light emitting device includes: a die-mounting base having a mounting surface; a light emitting diode mounted on the mounting surface of the die-mounting base and having a top surface facing in a normal direction normal to the mounting surface of the die-mounting base; a first wavelength-converting layer of a first wavelength-converting material formed on the mounting surface of the die-mounting base, enclosing the light emitting diode, and having a top surface; and a second wavelength-converting layer of a second wavelength-converting material formed on the top surface of the first wavelength-converting layer and having a top surface that is aligned with the top surface of the light emitting diode in the normal direction, and that has an area smaller than the top surface of the first wavelength-converting layer and not smaller than the top surface of the light emitting diode.Type: GrantFiled: May 11, 2007Date of Patent: August 17, 2010Assignee: Lite-On Technology Corp.Inventors: Yi-Shan Lin, Kuan-Hsien Tu
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Publication number: 20080210961Abstract: A light emitting device includes: a die-mounting base having a mounting surface; a light emitting diode mounted on the mounting surface of the die-mounting base and having a top surface facing in a normal direction normal to the mounting surface of the die-mounting base; a first wavelength-converting layer of a first wavelength-converting material formed on the mounting surface of the die-mounting base, enclosing the light emitting diode, and having a top surface; and a second wavelength-converting layer of a second wavelength-converting material formed on the top surface of the first wavelength-converting layer and having a top surface that is aligned with the top surface of the light emitting diode in the normal direction, and that has an area smaller than the top surface of the first wavelength-converting layer and not smaller than the top surface of the light emitting diode.Type: ApplicationFiled: May 11, 2007Publication date: September 4, 2008Inventors: Yi-Shan Lin, Kuan-Hsien Tu