Patents by Inventor Anatoly Shteynberg
Anatoly Shteynberg 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: 7852300Abstract: An exemplary apparatus embodiment provides a plurality of operating modes for solid state lighting, such as a flash mode and a constant or background lighting mode for use with devices such as cameras. An exemplary apparatus comprises a memory adapted to store a plurality of average current parameters; and a controller adapted to modulate an energizing cycle time period (“T”) for providing power to the solid state lighting as proportional to the product of the selected average current parameter (“a”) and a reset time period (“TR”) for an inductor current to return to a substantially zero level from a predetermined peak level (T?a·TR). The average current parameter is predetermined as substantially proportional to a ratio of a peak inductor current level (“IP”) to an average output D.C. current level ( “ I O ” ) ? ( a ? I P I O ) .Type: GrantFiled: February 2, 2007Date of Patent: December 14, 2010Assignee: Exclara, Inc.Inventors: Anatoly Shteynberg, Harry Rodriguez
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Publication number: 20100308738Abstract: An apparatus, method and system are disclosed for providing AC line power to lighting devices such as light emitting diodes (“LEDs”). An exemplary apparatus comprises: a plurality of LEDs coupled in series to form a first plurality of segments of LEDs; a plurality of switches coupled to the plurality of segments of LEDs to switch a selected segment into or out of a series LED current path in response to a control signal; a current sensor; and a controller which, in response to a first parameter and during a first part of an AC voltage interval, generates a first control signal to switch a corresponding segment of LEDs into the series LED current path; and during a second part of the AC voltage interval, generates a second control signal to switch a corresponding segment of LEDs out of the first series LED current path.Type: ApplicationFiled: March 22, 2010Publication date: December 9, 2010Applicant: EXCLARA INC.Inventors: Anatoly Shteynberg, Dongsheng Zhou, Harry Rodriguez, Mark Eason, Bradley M. Lehman, Stephen F. Dreyer, Thomas J. Riordan
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Publication number: 20100308739Abstract: An apparatus, method and system are disclosed for providing AC line power to lighting devices such as light emitting diodes (“LEDs”). An exemplary apparatus comprises: a plurality of LEDs coupled in series to form a first plurality of segments of LEDs; a plurality of switches coupled to the plurality of segments of LEDs to switch a selected segment into or out of a series LED current path in response to a control signal; a memory; and a controller which, in response to a first parameter and during a first part of an AC voltage interval, determines and stores in the memory a value of a second parameter and generates a first control signal to switch a corresponding segment of LEDs into the series LED current path; and during a second part of the AC voltage interval, when a current value of the second parameter is substantially equal to the stored value, generates a second control signal to switch a corresponding segment of LEDs out of the first series LED current path.Type: ApplicationFiled: June 4, 2009Publication date: December 9, 2010Applicant: EXCLARA INC.Inventors: Anatoly Shteynberg, Dongsheng Zhou, Harry Rodriguez, Mark Eason, Bradley M. Lehman, Stephen F. Dreyer, Thomas J. Riordan
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Patent number: 7800315Abstract: Exemplary 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 has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary 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 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: October 29, 2007Date of Patent: September 21, 2010Assignee: Exclara, Inc.Inventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Publication number: 20100213859Abstract: 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: ApplicationFiled: December 16, 2009Publication date: August 26, 2010Applicant: EXCLARA INC.Inventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Patent number: 7710047Abstract: A system drives one or plurality of LEDs regulating their brightness by controlling LEDs average current or voltage. The system includes a switching power converter and an integrated digital regulator with at least one of electrical, thermal and optical feedbacks. The regulator is constructed as a hysteretic peak current mode controller for continuous mode of operation of the power converter. For discontinuous mode of operation of the power converter a pulse averaging sliding mode control is being used. Average LED current is measured by integrating LED pulse current at off time and hysteretically adjusting on time of the power switch. Input battery is protected from discharging at abnormally low impedance of the output.Type: GrantFiled: August 13, 2007Date of Patent: May 4, 2010Assignee: Exclara, Inc.Inventors: Anatoly Shteynberg, Harry Rodriguez
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Publication number: 20100045187Abstract: A system drives one or plurality of LEDs, regulating their brightness by controlling LEDs average current or voltage. The system includes a switching power converter and an integrated digital regulator with at least one of electrical, thermal and optical feedbacks. The regulator is constructed as a hysteretic peak current mode controller for continuous mode of operation of the power converter. For discontinuous mode of operation of the power converter a pulse averaging sliding mode control is being used. Average LED current is measured by integrating LED pulse current at off time and hysteretically adjusting on time of the power switch. Input battery is protected from discharging at abnormally low impedance of the output.Type: ApplicationFiled: July 5, 2009Publication date: February 25, 2010Applicant: EXCLARA INC.Inventors: Anatoly Shteynberg, Harry Rodriguez
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Publication number: 20100026208Abstract: An apparatus, method and system are provided for power conversion to supply power to a load such as a plurality of light emitting diodes. An exemplary apparatus comprises: a first power converter stage having a first power switch and a first inductive element; a second power converter stage having a second power switch and a second inductive element; a plurality of sensors; and a controller. The second power converter stage provides an output current to the load. The controller is adapted to use a sensed input voltage to determine a switching period, and is further adapted to turn the first and second power switches into an on-state at a frequency substantially corresponding to the switching period while maintaining a switching duty cycle within a predetermined range.Type: ApplicationFiled: July 29, 2008Publication date: February 4, 2010Applicant: EXCLARA INC.Inventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman
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Patent number: 7656103Abstract: Exemplary embodiments provide an impedance matching circuit for providing variable power from a dimmer switch having a triac to a switching power supply couplable to solid-state lighting. An exemplary impedance matching circuit includes a first resistor coupled to receive a first current from the switching power supply; a second resistor; and a transistor coupled in series to the second resistor, with the transistor responsive to a gate voltage to modulate a second current through the second resistor in response to a detected level of the first current through the first resistor.Type: GrantFiled: January 19, 2007Date of Patent: February 2, 2010Assignee: Exclara, Inc.Inventors: Anatoly Shteynberg, Harry Rodriguez, Dongsheng Zhou
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Publication number: 20090251934Abstract: An apparatus method and system are provided for power conversion, to supply power to a nonlinear load such as a plurality of light emitting diodes. An exemplary apparatus comprises a first power converter stage, a second power converter stage, a plurality of sensors such as first and second sensors, and a controller. The first power converter stage includes a power switch and a first inductor having a first inductance. The first and second sensors are both coupled to a common reference node, with the first sensor adapted to sense a first parameter of the first power converter stage, and the second sensor adapted to sense the output current level. The second power converter stage includes a second inductor having a second inductance, and is coupleable to provide an output current to the nonlinear load such as LEDs.Type: ApplicationFiled: April 6, 2008Publication date: October 8, 2009Applicant: Exclara Inc.Inventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman
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Patent number: 7598685Abstract: The present invention creates an LED driver in which all feedback signals are derived from a power stage media, and presents an isolated off-line LED driver with an accurate primary side controller only to power one or more LEDs. The present invention further provides an effective off-line LED driver comprising AC current shape controller with a minimum number of components. The present invention further provides a high quality luminous system based on LED drivers with the integrated synthesized optical feedback to compensate for imperfections of the LEDs as sources of light.Type: GrantFiled: September 19, 2005Date of Patent: October 6, 2009Assignee: Exclara, Inc.Inventors: Anatoly Shteynberg, Harry Rodriguez
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Patent number: 7583035Abstract: A system drives one or plurality of LEDs regulating their brightness by controlling LEDs average current or voltage. The system includes a switching power converter and an integrated digital regulator with at least one of electrical, thermal and optical feedbacks. The regulator is constructed as a hysteretic peak current mode controller for continuous mode of operation of the power converter. For discontinuous mode of operation of the power converter a pulse averaging sliding mode control is being used. Average LED current is measured by integrating LED pulse current at off time and hysteretically adjusting on time of the power switch. Input battery is protected from discharging at abnormally low impedance of the output.Type: GrantFiled: August 13, 2007Date of Patent: September 1, 2009Assignee: Exclara, Inc.Inventors: Anatoly Shteynberg, Harry Rodriguez
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Patent number: 7554821Abstract: A power converter delivers electrical power from an electrical power source to a load according to a plurality of operation modes, where at least one of the operation modes is a peak current switching mode. Under the peak current switching mode, a switch controller controls the switch in the power converter to be kept on until the current through the switch reaches a peak current value corresponding to a given phase of the input voltage signal to the power converter. The peak current values have a reference shape, which may be a trapezoidal. The power converter may have any topology, such as a flyback-type power converter or a boost-type power converter.Type: GrantFiled: June 25, 2008Date of Patent: June 30, 2009Assignee: iWatt Inc.Inventors: Arthur J. Collmeyer, Anatoly Shteynberg, Junjie Zheng, Paul F. King, Dickson T. Wong, Harry Rodriguez
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Patent number: 7548438Abstract: A power converter delivers electrical power from an electrical power source to a load according to a plurality of operation modes, where at least one of the operation modes is a peak current switching mode. Under the peak current switching mode, a switch controller controls the switch in the power converter to be kept on until the current through the switch reaches a peak current value corresponding to a given phase of the input voltage signal to the power converter. The peak current values have a reference shape, which may be a trapezoidal. The power converter may have any topology, such as a flyback-type power converter or a boost-type power converter.Type: GrantFiled: June 25, 2008Date of Patent: June 16, 2009Assignee: iWatt Inc.Inventors: Arthur J. Collmeyer, Anatoly Shteynberg, Junjie Zheng, Paul F. King, Dickson T. Wong, Harry Rodriguez
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Publication number: 20090079359Abstract: Exemplary 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 has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary 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 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: October 29, 2007Publication date: March 26, 2009Applicant: EXCLARA INC.Inventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Publication number: 20090079355Abstract: An apparatus, method and system are provided for controlling the solid state lighting, such as LEDs. An exemplary apparatus comprises: a switch for switching electrical current through the LEDs, a current sensor; a first comparator adapted to determine when a switch electrical current has reached a first predetermined threshold; a second comparator adapted to determine when the switch electrical current has reached a predetermined average current level; and a controller.Type: ApplicationFiled: September 21, 2007Publication date: March 26, 2009Applicant: EXCLARA INC.Inventors: Dongsheng Zhou, Anatoly Shteynberg, Harry Rodriguez, Mark Eason, Lanh Nguyen
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Publication number: 20090079360Abstract: Exemplary 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 has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary 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 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: October 29, 2007Publication date: March 26, 2009Applicant: EXCLARA INC.Inventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Publication number: 20090079357Abstract: Exemplary 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 has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary 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 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: October 29, 2007Publication date: March 26, 2009Applicant: EXCLARA INC.Inventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Publication number: 20090079362Abstract: Exemplary 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 has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary 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 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: October 29, 2007Publication date: March 26, 2009Applicant: EXCLARA INC.Inventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou
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Publication number: 20090079358Abstract: Exemplary 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 has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary 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 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: October 29, 2007Publication date: March 26, 2009Applicant: EXCLARA INC.Inventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou