Patents by Inventor Dongsheng Zhou
Dongsheng Zhou 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: 9426856Abstract: An apparatus, method and system are disclosed for providing AC line power to lighting devices such as light emitting diodes (“LEDs”). A representative apparatus comprises: a plurality of LEDs coupled in series to form a plurality of segments of LEDs; first and second current regulators; a current sensor; and a controller to monitor a current level through a series LED current path, and to provide for first or second segments of LEDs to be in or out of the series LED current path at different current levels. A voltage regulator is also utilized to provide a voltage during a zero-crossing interval of the AC voltage. In a representative embodiment, first and second segments of LEDs are both in the series LED current path regulated at a lower current level compared to when only the first segment of LEDs is in the series LED current path.Type: GrantFiled: May 20, 2015Date of Patent: August 23, 2016Assignee: Chemtron Research LLCInventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
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Patent number: 9148922Abstract: Exemplary embodiments provide for power conversion for solid state lighting coupled to a first switch, such as a dimmer switch. An exemplary apparatus includes a switching power supply and a first adaptive interface circuit. The first adaptive interface circuit may include a resistive impedance coupled in series to a reactive impedance. The apparatus may also include a second adaptive interface circuit including a second switch coupled to the reactive impedance. The second adaptive interface circuit is configured to conduct current from the first switch in a second current path. At least one of the first and second adaptive interface circuits may be configured to damp oscillation when the first switch turns on.Type: GrantFiled: May 1, 2014Date of Patent: September 29, 2015Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou, Harlan H. Ohara
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Publication number: 20150257226Abstract: An apparatus, method and system are disclosed for providing AC line power to lighting devices such as light emitting diodes (“LEDs”). A representative apparatus comprises: a plurality of LEDs coupled in series to form a plurality of segments of LEDs; first and second current regulators; a current sensor; and a controller to monitor a current level through a series LED current path, and to provide for first or second segments of LEDs to be in or out of the series LED current path at different current levels. A voltage regulator is also utilized to provide a voltage during a zero-crossing interval of the AC voltage. In a representative embodiment, first and second segments of LEDs are both in the series LED current path regulated at a lower current level compared to when only the first segment of LEDs is in the series LED current path.Type: ApplicationFiled: May 20, 2015Publication date: September 10, 2015Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
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Patent number: 9060401Abstract: Apparatus and method are disclosed for providing AC line power to lighting devices such as light emitting diodes (“LEDs”). A representative apparatus comprises: a plurality of LEDs couplable to form a plurality of segments of LEDs; a current sensor; and a controller to monitor a current level through an overall series LED current path, and to provide for first or second segments of LEDs to be in or out of the overall series LED current path at different current levels. The controller is configured to, in a first light emitting diode configuration, cause first and second segments of LEDs to be parallel to one another and in the overall series LED current path. The controller is further configured to, in a second light emitting diode configuration, cause first and second segments of light emitting diodes to be coupled in series and in the overall series light emitting diode current path.Type: GrantFiled: January 24, 2014Date of Patent: June 16, 2015Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
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Patent number: 9055641Abstract: An apparatus, method and system are disclosed for providing AC line power to lighting devices such as light emitting diodes (“LEDs”). A representative apparatus comprises: a plurality of LEDs coupled in series to form a plurality of segments of LEDs; first and second current regulators; a current sensor; and a controller to monitor a current level through a series LED current path, and to provide for first or second segments of LEDs to be in or out of the series LED current path at different current levels. A voltage regulator is also utilized to provide a voltage during a zero-crossing interval of the AC voltage. In a representative embodiment, first and second segments of LEDs are both in the series LED current path regulated at a lower current level compared to when only the first segment of LEDs is in the series LED current path.Type: GrantFiled: October 28, 2013Date of Patent: June 9, 2015Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
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Patent number: 9041305Abstract: Representative embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting system has a first emitted spectrum at a full intensity level and at a selected temperature, with a first electrical biasing for the solid state lighting system producing a first wavelength shift, and a second electrical biasing for the solid state lighting system producing a second, opposing wavelength shift. Representative embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting system to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures.Type: GrantFiled: April 8, 2014Date of Patent: May 26, 2015Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Publication number: 20140239832Abstract: Exemplary embodiments provide for power conversion for solid state lighting coupled to a first switch, such as a dimmer switch. An exemplary apparatus includes a switching power supply and a first adaptive interface circuit. The first adaptive interface circuit may include a resistive impedance coupled in series to a reactive impedance. The apparatus may also include a second adaptive interface circuit including a second switch coupled to the reactive impedance. The second adaptive interface circuit is configured to conduct current from the first switch in a second current path. At least one of the first and second adaptive interface circuits may be configured to damp oscillation when the first switch turns on.Type: ApplicationFiled: May 1, 2014Publication date: August 28, 2014Applicant: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou, Harlan H. Ohara
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Publication number: 20140217915Abstract: Representative embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting system has a first emitted spectrum at a full intensity level and at a selected temperature, with a first electrical biasing for the solid state lighting system producing a first wavelength shift, and a second electrical biasing for the solid state lighting system producing a second, opposing wavelength shift. Representative embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting system to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures.Type: ApplicationFiled: April 8, 2014Publication date: August 7, 2014Applicant: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Patent number: 8749177Abstract: Representative embodiments of the disclosure provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting system has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting system producing a first wavelength shift, and a second electrical biasing for the solid state lighting system producing a second, opposing wavelength shift. Representative embodiments provide for receiving information designating a selected intensity level or a selected temperature and providing a combined first electrical biasing and second electrical biasing to the solid state lighting system to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures.Type: GrantFiled: August 31, 2012Date of Patent: June 10, 2014Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Patent number: 8742674Abstract: Exemplary embodiments provide an apparatus, system and method for power conversion to provide power to solid state lighting, and which may be coupled to a first switch, such as a dimmer switch. An exemplary system comprises: a switching power supply; solid state lighting; a first adaptive interface circuit to provide a resistive impedance to the first switch and conduct current from the first switch in a default mode; and a second adaptive interface circuit to create a resonant process. An exemplary apparatus comprises: a switching power supply; and an adaptive interface circuit comprising a resistive impedance coupled in series to a reactive impedance to conduct current from the first switch in a first current path in a default mode, and further comprising a second switch coupled to the reactive impedance to conduct current from the first switch in a second current path, with the adaptive interface circuit further damping oscillation when the first switch turns on.Type: GrantFiled: December 15, 2010Date of Patent: June 3, 2014Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou, Harlan H. Ohara
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Publication number: 20140139112Abstract: Apparatus and method are disclosed for providing AC line power to lighting devices such as light emitting diodes (“LEDs”). A representative apparatus comprises: a plurality of LEDs couplable to form a plurality of segments of LEDs; a current sensor; and a controller to monitor a current level through an overall series LED current path, and to provide for first or second segments of LEDs to be in or out of the overall series LED current path at different current levels. The controller is configured to, in a first light emitting diode configuration, cause first and second segments of LEDs to be parallel to one another and in the overall series LED current path. The controller is further configured to, in a second light emitting diode configuration, cause first and second segments of light emitting diodes to be coupled in series and in the overall series light emitting diode current path.Type: ApplicationFiled: January 24, 2014Publication date: May 22, 2014Applicant: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
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Patent number: 8723766Abstract: Representative embodiments of the disclosure provide a system and apparatus for controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting system has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting system producing a first wavelength shift, and a second electrical biasing for the solid state lighting system producing a second, opposing wavelength shift. Representative embodiments provide for receiving information designating a selected intensity level and a selected temperature and providing a combined first electrical biasing and second electrical biasing to the solid state lighting system to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures.Type: GrantFiled: July 25, 2012Date of Patent: May 13, 2014Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Publication number: 20140125230Abstract: An apparatus, method and system are disclosed for providing AC line power to lighting devices such as light emitting diodes (“LEDs”). A representative apparatus comprises: a plurality of LEDs coupled in series to form a plurality of segments of LEDs; first and second current regulators; a current sensor; and a controller to monitor a current level through a series LED current path, and to provide for first or second segments of LEDs to be in or out of the series LED current path at different current levels. A voltage regulator is also utilized to provide a voltage during a zero-crossing interval of the AC voltage. In a representative embodiment, first and second segments of LEDs are both in the series LED current path regulated at a lower current level compared to when only the first segment of LEDs is in the series LED current path.Type: ApplicationFiled: October 28, 2013Publication date: May 8, 2014Applicant: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
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Patent number: 8704456Abstract: Representative embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting system has a first emitted spectrum at a full intensity level and at a selected temperature, with a first electrical biasing for the solid state lighting system producing a first wavelength shift, and a second electrical biasing for the solid state lighting system producing a second, opposing wavelength shift. Representative embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting system to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures.Type: GrantFiled: January 15, 2013Date of Patent: April 22, 2014Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Patent number: 8704462Abstract: Representative embodiments provide an apparatus, system, and method for power conversion to provide power to solid state lighting, and which may be coupled to a first switch, such as a dimmer switch. A representative system for power conversion comprises: a switching power supply comprising a second, power switch; solid state lighting coupled to the switching power supply; a voltage sensor; a current sensor; a memory; a first adaptive interface circuit to provide a resistive impedance to the first switch and conduct current from the first switch in a default mode; a second adaptive interface circuit to create a resonant process when the first switch turns on; and a controller to modulate the second adaptive interface circuit when the first switch turns on to provide a current path during the resonant process of the switching power supply.Type: GrantFiled: May 13, 2013Date of Patent: April 22, 2014Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Patent number: 8569956Abstract: An apparatus, method and system are disclosed for providing AC line power to lighting devices such as light emitting diodes (“LEDs”). A representative apparatus comprises: a plurality of LEDs coupled in series to form a plurality of segments of LEDs; first and second current regulators; a current sensor; and a controller to monitor a current level through a series LED current path, and to provide for first or second segments of LEDs to be in or out of the series LED current path at different current levels. A voltage regulator is also utilized to provide a voltage during a zero-crossing interval of the AC voltage. In a representative embodiment, first and second segments of LEDs are both in the series LED current path regulated at a lower current level compared to when only the first segment of LEDs is in the series LED current path.Type: GrantFiled: October 27, 2011Date of Patent: October 29, 2013Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
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Patent number: 8558470Abstract: Exemplary embodiments provide an apparatus, system and method for power conversion to provide power to solid state lighting, and which may be coupled to a first switch, such as a dimmer switch. An exemplary system comprises: a switching power supply; solid state lighting; a first adaptive interface circuit to provide a resistive impedance to the first switch and conduct current from the first switch in a default mode; and a second adaptive interface circuit to create a resonant process. An exemplary apparatus comprises: a switching power supply; and an adaptive interface circuit comprising a resistive impedance coupled in series to a reactive impedance to conduct current from the first switch in a first current path in a default mode, and further comprising a second switch coupled to the reactive impedance to conduct current from the first switch in a second current path, with the adaptive interface circuit further damping oscillation when the first switch turns on.Type: GrantFiled: May 12, 2010Date of Patent: October 15, 2013Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Dongsheng Zhou, Bradley M. Lehman
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Publication number: 20130249439Abstract: Representative embodiments provide an apparatus, system, and method for power conversion to provide power to solid state lighting, and which may be coupled to a first switch, such as a dimmer switch. A representative system for power conversion comprises: a switching power supply comprising a second, power switch; solid state lighting coupled to the switching power supply; a voltage sensor; a current sensor; a memory; a first adaptive interface circuit to provide a resistive impedance to the first switch and conduct current from the first switch in a default mode; a second adaptive interface circuit to create a resonant process when the first switch turns on; and a controller to modulate the second adaptive interface circuit when the first switch turns on to provide a current path during the resonant process of the switching power supply.Type: ApplicationFiled: May 13, 2013Publication date: September 26, 2013Applicant: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Patent number: 8441210Abstract: Exemplary embodiments provide an apparatus, system and method for power conversion to provide power to solid state lighting, and which may be coupled to a first switch, such as a dimmer switch. An exemplary system for power conversion comprises: a switching power supply comprising a second, power switch; solid state lighting coupled to the switching power supply; a voltage sensor; a current sensor; a memory; a first adaptive interface circuit to provide a resistive impedance to the first switch and conduct current from the first switch in a default mode; a second adaptive interface circuit to create a resonant process when the first switch turns on; and a controller to modulate the second adaptive interface circuit when the first switch turns on to provide a current path during the resonant process of the switching power supply.Type: GrantFiled: December 16, 2009Date of Patent: May 14, 2013Assignee: Point Somee Limited Liability CompanyInventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Patent number: D679943Type: GrantFiled: March 24, 2012Date of Patent: April 16, 2013Inventor: Dongsheng Zhou