Patents by Inventor Xuewei Dai
Xuewei Dai 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: 9635735Abstract: A master illuminating device may include an illuminating module, and a signal acquisition and processing unit for detecting the surrounding and outputting a control signal. The illuminating module is designed to receive the control signal and is driven according to the control signal. The illuminating device further include a signal transmission unit which is designed to receive the control signal and is designed to transmit the control signal.Type: GrantFiled: November 26, 2012Date of Patent: April 25, 2017Assignee: OSRAM GmbHInventors: XiHe Zhuang, Middel Tjaco, Daxin Lin, Xuewei Dai, Zesheng Ye
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Patent number: 9629224Abstract: A lighting device may include a tube and end caps located at two ends of the tube, a lighting assembly arranged in the tube, a driver for the lighting assembly, an antenna, and a wireless communication circuit for conducting wireless communication, the antenna being provided in the end cap and the wireless communication circuit being provided in the tube or at least partially provided in the end cap, and one side of the wire communication circuit being connected to the driver and the other side thereof being connected to the antenna.Type: GrantFiled: August 14, 2012Date of Patent: April 18, 2017Assignee: OSRAM GMBHInventors: Xuewei Dai, Aimin Lin, Middel Tjaco, Zesheng Ye
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Patent number: 9568176Abstract: A completely plastic LED tube light, may include plastic shell comprising wires embedded therein, wherein two or more projections having greater dimensions than that of the wires are formed on the wires, end caps located at two ends of the plastic shell, respectively, and LEDs positioned in a space enclosed by the plastic shell and the end caps. A method for manufacturing the completely plastic LED tube light is also disclosed.Type: GrantFiled: September 7, 2012Date of Patent: February 14, 2017Assignee: OSRAM GMBHInventors: Zesheng Ye, Xuewei Dai, Nimchung Ku, Middel Tjaco
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Patent number: 9456475Abstract: An illumination control system includes a rectifying device, a damping device for inhibiting flickering, and a load circuit, wherein the illumination control system further comprises a recognizing control circuit connected between the rectifying device and the damping device, and wherein the recognizing control circuit includes a recognizing signal output module and a switch module, the recognizing signal output module generates a first control signal indicating that a dimmer is not connected upstream the rectifying device or the dimmer is connected upstream the rectifying device and reaches a predetermined dimming level and a second control signal indicating that the dimmer is connected upstream the rectifying device and does not reach the predetermined dimming level and at least one damping resistor of the damping device is short connected or is connected by means of the switch module according to the first control signal or the second control signal.Type: GrantFiled: August 23, 2012Date of Patent: September 27, 2016Assignee: OSRAM GMBHInventors: ZhiJian Cao, Xuewei Dai, Zeke Wei, XiHe Zhuang
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Patent number: 9356532Abstract: Various embodiments relate to a load driver and a luminaire including the load driver. The load driver may include a voltage limiting circuit including a first polar capacitor and a second polar capacitor connected in inverse series, which are connected in parallel respectively with first and second current limiting elements, where the first and second current limiting elements limit the direction in which current flows so that current flows through different polar capacitors in positive and negative halves of a cycle of an alternating-current power supply.Type: GrantFiled: May 23, 2013Date of Patent: May 31, 2016Assignee: OSRAM GMBHInventors: Daxin Lin, Hui Jia, Yaping Liu, SiXiong Zeng, Middel Tjaco, Xuewei Dai, Yewei Liufu
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Patent number: 9099917Abstract: A constant current source circuit includes a main circuit, wherein the main circuit includes a first three-terminal regulator, a transistor, a sample resistor and a load, an output terminal of the first three-terminal regulator is connected with a control Electrode of the transistor, a reference Electrode of the transistor is connected with a voltage input terminal, a working Electrode is connected with one end of the load, and the other end of the load is connected with one end of the sample resistor, and the other end of the sample resistor and an input terminal of the first three-terminal regulator are connected to a reference potential, respectively, wherein the constant current source circuit further includes an adjusting unit that includes a voltage stabilizing unit, a fourth resistor and a fifth resistor.Type: GrantFiled: August 23, 2012Date of Patent: August 4, 2015Assignee: Osram GmbHInventors: Xuewei Dai, Chunjun Jiang, Middel Tjaco, Dezhao Zhang
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Publication number: 20150097493Abstract: Various embodiments relate to a load driver and a luminaire including the load driver. The load driver may include a voltage limiting circuit including a first polar capacitor and a second polar capacitor connected in inverse series, which are connected in parallel respectively with first and second current limiting elements, where the first and second current limiting elements limit the direction in which current flows so that current flows through different polar capacitors in positive and negative halves of a cycle of an alternating-current power supply.Type: ApplicationFiled: May 23, 2013Publication date: April 9, 2015Inventors: Daxin Lin, Hui Jia, Yaping Liu, SiXiong Zeng, Middel Tjaco, Xuewei Dai, Yewei Liufu
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Publication number: 20150022113Abstract: Various embodiments relate to a power factor controller based single-stage flyback driver and a light-emitting system. The driver includes a primary-side circuit, a secondary-side circuit, a power factor controller, a current feedback circuit, a voltage feedback circuit, and a feedback signal generation circuit, wherein, in the secondary-side circuit, the output voltage is divided using a first voltage division resistor and a second voltage division resistor so as to provide the sampling of the output voltage to the voltage feedback circuit, and the first voltage division resistor or the second voltage division resistor is connected in parallel with a compensation branch having a capacitive reactance.Type: ApplicationFiled: December 17, 2012Publication date: January 22, 2015Applicant: OSRAM GmbHInventors: Yewei Liufu, Xuewei Dai, XiHe Zhuang, Quan Zhang
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Publication number: 20140375204Abstract: A lighting device may include a tube and end caps located at two ends of the tube, a lighting assembly arranged in the tube, a driver for the lighting assembly, an antenna, and a wireless communication circuit for conducting wireless communication, the antenna being provided in the end cap and the wireless communication circuit being provided in the tube or at least partially provided in the end cap, and one side of the wire communication circuit being connected to the driver and the other side thereof being connected to the antenna.Type: ApplicationFiled: August 14, 2012Publication date: December 25, 2014Applicant: OSRAM GMBHInventors: Xuewei Dai, Aimin Lin, Middel Tjaco, Zesheng Ye
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Publication number: 20140327365Abstract: A constant current source circuit includes a main circuit, wherein the main circuit includes a first three-terminal regulator, a transistor, a sample resistor and a load, an output terminal of the first three-terminal regulator is connected with a control Electrode of the transistor, a reference Electrode of the transistor is connected with a voltage input terminal, a working Electrode is connected with one end of the load, and the other end of the load is connected with one end of the sample resistor, and the other end of the sample resistor and an input terminal of the first three-terminal regulator are connected to a reference potential, respectively, wherein the constant current source circuit further includes an adjusting unit that includes a voltage stabilizing unit, a fourth resistor and a fifth resistor.Type: ApplicationFiled: August 23, 2012Publication date: November 6, 2014Applicant: OSRAM GMBHInventors: Xuewei Dai, Chunjun Jiang, Middel Tjaco, Dezhao Zhang
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Publication number: 20140320028Abstract: A master illuminating device may include an illuminating module, and a signal acquisition and processing unit for detecting the surrounding and outputting a control signal. The illuminating module is designed to receive the control signal and is driven according to the control signal. The illuminating device further include a signal transmission unit which is designed to receive the control signal and is designed to transmit the control signal.Type: ApplicationFiled: November 26, 2012Publication date: October 30, 2014Inventors: XiHe Zhuang, Middel Tjaco, Daxin Lin, Xuewei Dai, Zesheng Ye
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Publication number: 20140252972Abstract: An illumination control system includes a rectifying device, a damping device for inhibiting flickering, and a load circuit, wherein the illumination control system further comprises a recognizing control circuit connected between the rectifying device and the damping device, and wherein the recognizing control circuit includes a recognizing signal output module and a switch module, the recognizing signal output module generates a first control signal indicating that a dimmer is not connected upstream the rectifying device or the dimmer is connected upstream the rectifying device and reaches a predetermined dimming level and a second control signal indicating that the dimmer is connected upstream the rectifying device and does not reach the predetermined dimming level and at least one damping resistor of the damping device is short connected or is connected by means of the switch module according to the first control signal or the second control signal.Type: ApplicationFiled: August 23, 2012Publication date: September 11, 2014Applicant: OSRAM GMBHInventors: ZhiJian Cao, Xuewei Dai, Zeke Wei, XiHe Zhuang
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Publication number: 20140240973Abstract: A completely plastic LED tube light, may include plastic shell comprising wires embedded therein, wherein two or more projections having greater dimensions than that of the wires are formed on the wires, end caps located at two ends of the plastic shell, respectively, and LEDs positioned in a space enclosed by the plastic shell and the end caps. A method for manufacturing the completely plastic LED tube light is also disclosed.Type: ApplicationFiled: September 7, 2012Publication date: August 28, 2014Applicant: OSRAM GMBHInventors: Zesheng Ye, Xuewei Dai, Nimchung Ku, Middel Tjaco
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Publication number: 20130321154Abstract: An EAS device with a housing. In one embodiment, the EAS housing is a one-piece tray-shaped device with the edges contoured so that the monitored object snaps into the tray or is slid into the tray. Other embodiments may include but are not limited to a two piece housing where one piece of the housing has a protrusion which, when closed together and fitted with the other piece of the housing, engages with a releasable clutch located within the back piece. A clutch within the housing prevents the two pieces of the housing from being disengaged until the clutch is released. The EAS devices carry at least a passive EAS element. More advanced EAS electronic elements may also be carried in the housing.Type: ApplicationFiled: June 4, 2013Publication date: December 5, 2013Inventors: Xiao Hui Yang, Xuewei Dai