Patents by Inventor Sinan Doluca

Sinan Doluca 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).

  • Patent number: 10616966
    Abstract: 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: Grant
    Filed: February 27, 2019
    Date of Patent: April 7, 2020
    Assignee: Chemtron Research LLC
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Publication number: 20190200423
    Abstract: 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: Application
    Filed: February 27, 2019
    Publication date: June 27, 2019
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Patent number: 10231301
    Abstract: 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: Grant
    Filed: November 13, 2017
    Date of Patent: March 12, 2019
    Assignee: Chemtron Research LLC
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Publication number: 20180110099
    Abstract: 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: Application
    Filed: November 13, 2017
    Publication date: April 19, 2018
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Patent number: 9820349
    Abstract: 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: Grant
    Filed: August 3, 2016
    Date of Patent: November 14, 2017
    Assignee: Chemtron Research LLC
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Publication number: 20170034879
    Abstract: 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: Application
    Filed: August 3, 2016
    Publication date: February 2, 2017
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Patent number: 9426856
    Abstract: 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: Grant
    Filed: May 20, 2015
    Date of Patent: August 23, 2016
    Assignee: Chemtron Research LLC
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Publication number: 20150257226
    Abstract: 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: Application
    Filed: May 20, 2015
    Publication date: September 10, 2015
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Patent number: 9060401
    Abstract: 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: Grant
    Filed: January 24, 2014
    Date of Patent: June 16, 2015
    Assignee: Point Somee Limited Liability Company
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Patent number: 9055641
    Abstract: 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: Grant
    Filed: October 28, 2013
    Date of Patent: June 9, 2015
    Assignee: Point Somee Limited Liability Company
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Publication number: 20140139112
    Abstract: 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: Application
    Filed: January 24, 2014
    Publication date: May 22, 2014
    Applicant: Point Somee Limited Liability Company
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Publication number: 20140125230
    Abstract: 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: Application
    Filed: October 28, 2013
    Publication date: May 8, 2014
    Applicant: Point Somee Limited Liability Company
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Patent number: 8569956
    Abstract: 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: Grant
    Filed: October 27, 2011
    Date of Patent: October 29, 2013
    Assignee: Point Somee Limited Liability Company
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Publication number: 20120081009
    Abstract: 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 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 an exemplary 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: Application
    Filed: October 27, 2011
    Publication date: April 5, 2012
    Applicant: EXCLARA INC.
    Inventors: Anatoly Shteynberg, Dongsheng Zhou, Stephen F. Dreyer, Harlan Ohara, Sinan Doluca
  • Patent number: 5760620
    Abstract: A buffer or driver circuit drives a high-capacitance clock signal line inside an integrated circuit (IC). Power is reduced by limiting the voltage swing of the clock output. The clock voltage swing is limited to within a transistor threshold-voltage of power and ground by feeding the output voltage back to the gates of the driver transistors which drive the output clock signal line. Thus the output clock swings from Vtn to Vcc-.vertline.Vtp.vertline. rather than from ground to Vcc. The limited output swing reduces dynamic power which is more critical than static power in downstream logic receiving the clock for higher-speed clocks. Crowbar current from power to ground through the driver transistors is eliminated by turning off the active driver transistor before the complementary driver is turned on. The gates of the driver transistors are charged and discharged from the clock line capacitance rather than from power and ground.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: June 2, 1998
    Assignee: Quantum Effect Design, Inc.
    Inventor: Sinan Doluca
  • Patent number: 5554874
    Abstract: A static RAM memory is arranged into groups of four cells sharing a single active region with a contact to one of the bit lines. The shared active region forms the sources of four access transistors. The group of four cells requires only one pair of bit lines instead of the usual two pairs of bit lines. Thus a pair of bit lines occurs for every two cells rather than for every cell. This increases the bit-line pitch and facilitates design and layout of the sense amps. Since only one of the four cells can drive the bit lines at any time, four word lines are used instead of only two. Each cell has two word lines crossing over it, and the cells in a row alternately connect to one or the other word line. Since word-line drivers and decoders are simpler and easier to lay out than the sense amps, the tighter word-line pitch is acceptable. An unused metal line occurs for every two columns of cells. The bit lines are shielded from this unused metal line by power and ground lines.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: September 10, 1996
    Assignee: Quantum Effect Design, Inc.
    Inventor: Sinan Doluca
  • Patent number: 5045722
    Abstract: A preconditioning circuit for use with an output buffer. The invention includes circuitry for detecting the output level of the buffer and for increasing the output level of the buffer when the output thereof is below a predetermined level or decreasing the output level of the buffer when the output thereof is above a predetermined level.
    Type: Grant
    Filed: November 14, 1989
    Date of Patent: September 3, 1991
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Mann-Lu Yang, Sinan Doluca
  • Patent number: 4769784
    Abstract: A capacitor-plate bias generator produces a voltage on the capacitor plate node which consists of a constant voltage plus the sense-level voltage. Consequently, the capacitor-plate node tracks any variations in the sense-level voltage. The constant voltage is 3V.sub.BG, or 3 times the bandgap voltage of silicon. The circuit includes a reference-voltage source which produces the sum of the sense-level voltage and V.sub.BG, and a feedback control circuit for enabling either a charge pump or a charge bleeder to regulate the capacitor-plate voltage at a level above the circuit supply voltage.
    Type: Grant
    Filed: August 19, 1986
    Date of Patent: September 6, 1988
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Sinan Doluca, Robert Yau