Patents by Inventor Dragan Veskovic

Dragan Veskovic 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: 10405411
    Abstract: A method of automatically configuring a load control device takes advantage of a remote identification tag (e.g., an RFID tag) located in the vicinity of the device. The remote identification tag stores an identifier that is representative of a location in which the tag is installed. The method includes the steps of: associating a configuration setting with the identifier of the device in memory; the device receiving a first digital message including the identifier from the remote identification tag; the device transmitting a second digital message including the identifier after receiving the first digital message; and the device receiving a third digital message including the configuration setting associated with the identifier after transmitting the second digital message.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: September 3, 2019
    Assignee: Lutron Technology Company LLC
    Inventor: Dragan Veskovic
  • Publication number: 20190250201
    Abstract: A control module for a lighting fixture may include an input circuit (e.g., a wireless communication circuit) that may be susceptible to noise generating by a noise-generating source (e.g., a lighting control device in the lighting fixture). The control circuit may execute a self-test procedure to determine if the magnitude of the noise is acceptable or unacceptable for normal operation of the control module. During the self-test procedure, the control circuit may measure a noise level at a connection of the input circuit and determine if the noise level causes the self-test procedure to fail. The control circuit may control the lighting load to multiple intensities, measure noise levels of the output signal at each intensity, and process the noise levels to determine if the test has passed or failed. The control circuit may illuminate a visual indicator to provide an indication that the self-test procedure has failed.
    Type: Application
    Filed: February 8, 2019
    Publication date: August 15, 2019
    Applicant: Lutron Electronics Co., Inc.
    Inventors: Richard S. Camden, Jordan H. Crafts, Vidur Garg, Kevin L. Gascho, Alexander F. Mosolgo, Dragan Veskovic, Sean R. Pearson
  • Publication number: 20190166665
    Abstract: A load control device for controlling the amount of power delivered to an electrical load (e.g., an LED light source) includes first and second semiconductor switches, a transformer, a capacitor, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducting through to a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The capacitor is electrically coupled between the junction of the first and second semiconductor switches and the primary winding. The current sense circuit receives a sense voltage and averages the sense voltage when the first semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.
    Type: Application
    Filed: January 29, 2019
    Publication date: May 30, 2019
    Applicant: Lutron Electronics Co., Inc.
    Inventor: Dragan Veskovic
  • Patent number: 10219335
    Abstract: A load control device for controlling the amount of power delivered to an electrical load (e.g., an LED light source) includes first and second semiconductor switches, a transformer, a capacitor, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducting through to a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The capacitor is electrically coupled between the junction of the first and second semiconductor switches and the primary winding. The current sense circuit receives a sense voltage and averages the sense voltage when the first semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: February 26, 2019
    Assignee: LUTRON ELECTRONICS CO., INC.
    Inventor: Dragan Veskovic
  • Patent number: 10129962
    Abstract: A method of automatically programming a load control device takes advantage of a remote identification tag (e.g., an RFID tag) located in the vicinity of the device. The remote identification tag stores an identifier that is representative of a location in which the device is installed. The method includes the steps of: (1) storing a setting of the device in a memory of a controller; (2) associating the setting with the identifier in the memory of the controller; (3) the device receiving the identifier from the remote identification tag; (4) the device transmitting the identifier to the controller; and (5) the controller transmitting the setting to the device in response to receiving the identifier.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: November 13, 2018
    Assignee: Lutron Electronic Co., Inc.
    Inventor: Dragan Veskovic
  • Publication number: 20180242437
    Abstract: A method of automatically programming a new load control device that replaces an old load control device takes advantage of a remote identification tag (e.g., an RFID tag) located in the vicinity of the old device. The remote identification tag stores an identifier that is representative of a location in which the old device is installed. The method includes the steps of: (1) storing a setting of an old device in a memory of a controller; (2) associating the setting with the identifier of the old device in the memory of the controller; (3) the new device retrieving the identifier from the remote identification tag after the new device is installed in the location of the old device; (4) the new device transmitting the identifier to the controller; and (5) the controller transmitting the setting of the old device to the new device in response to receiving the identifier.
    Type: Application
    Filed: April 23, 2018
    Publication date: August 23, 2018
    Applicant: Lutron Electronic Co., Inc.
    Inventor: Dragan Veskovic
  • Publication number: 20170310109
    Abstract: A controllable electrical outlet may comprise a resonant loop antenna. The resonant loop antenna may comprise a feed loop electrically coupled to a radio-frequency (RF) communication circuit and a main loop magnetically coupled to the feed loop. The controllable electrical outlet may comprise one or more electrical receptacles configured to receive a plug of a plug-in electrical load and may be configured to control power delivered to the plug-in electrical load in response to an RF signal received via the RF communication circuit. The RF performance of the controllable electrical outlet may be substantially immune to devices plugged into the receptacles (e.g., plugs, power supplies, etc.) due to the operation of the resonant loop antenna. For example, degradation of the RF performance of the controllable electrical outlet may be less when the controllable electrical outlet includes the resonant loop antenna rather than other types of antennas.
    Type: Application
    Filed: April 25, 2017
    Publication date: October 26, 2017
    Applicant: Lutron Electronics Co., Inc.
    Inventors: Robert Bollinger, JR., Dragan Veskovic
  • Publication number: 20170238382
    Abstract: A load control device for controlling the amount of power delivered to an electrical load (e.g., an LED light source) includes first and second semiconductor switches, a transformer, a capacitor, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducting through to a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The capacitor is electrically coupled between the junction of the first and second semiconductor switches and the primary winding. The current sense circuit receives a sense voltage and averages the sense voltage when the first semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.
    Type: Application
    Filed: May 2, 2017
    Publication date: August 17, 2017
    Applicant: Lutron Electronics Co., Inc.
    Inventor: Dragan Veskovic
  • Patent number: 9655177
    Abstract: A load control device for controlling the amount of power delivered to an electrical load (e.g., an LED light source) comprises an isolated forward converter comprising a transformer, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducting through to a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The forward converter comprises a sense resistor coupled in series with the primary winding for producing the sense voltage that is representative of the primary current. The current sense circuit receives the sense voltage and averages the sense voltage when the semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: May 16, 2017
    Assignee: LUTRON ELECTRONICS CO., INC.
    Inventor: Dragan Veskovic
  • Publication number: 20170042004
    Abstract: A method of automatically programming a new load control device that replaces an old load control device takes advantage of a remote identification tag (e.g., an RFID tag) located in the vicinity of the old device. The remote identification tag stores an identifier that is representative of a location in which the old device is installed. The method includes the steps of: (1) storing a setting of an old device in a memory of a controller; (2) associating the setting with the identifier of the old device in the memory of the controller; (3) the new device retrieving the identifier from the remote identification tag after the new device is installed in the location of the old device; (4) the new device transmitting the identifier to the controller; and (5) the controller transmitting the setting of the old device to the new device in response to receiving the identifier.
    Type: Application
    Filed: October 24, 2016
    Publication date: February 9, 2017
    Applicant: Lutron Electronic Co., Inc.
    Inventor: Dragan Veskovic
  • Patent number: 9516724
    Abstract: A method of automatically programming a new load control device that replaces an old load control device takes advantage of a remote identification tag (e.g., an RFID tag) located in the vicinity of the old device. The remote identification tag stores an identifier that is representative of a location in which the old device is installed. The method includes the steps of: (1) storing a setting of an old device in a memory of a controller; (2) associating the setting with the identifier of the old device in the memory of the controller; (3) the new device retrieving the identifier from the remote identification tag after the new device is installed in the location of the old device; (4) the new device transmitting the identifier to the controller; and (5) the controller transmitting the setting of the old device to the new device in response to receiving the identifier.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: December 6, 2016
    Assignee: LUTRON ELECTRONICS CO., INC.
    Inventor: Dragan Veskovic
  • Publication number: 20160073460
    Abstract: A load control device for controlling the amount of power delivered to an electrical load (e.g., an LED light source) comprises an isolated forward converter comprising a transformer, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducting through to a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The forward converter comprises a sense resistor coupled in series with the primary winding for producing the sense voltage that is representative of the primary current. The current sense circuit receives the sense voltage and averages the sense voltage when the semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.
    Type: Application
    Filed: November 13, 2015
    Publication date: March 10, 2016
    Applicant: Lutron Electronics Co., Inc.
    Inventor: Dragan Veskovic
  • Patent number: 9253829
    Abstract: A load control device for controlling the intensity of a light source (e.g., a light-emitting diode light source) reduces visible flickering in the light source when a target intensity of the light source is dynamically changing. The load control device includes a load regulation circuit operable to conduct a load current through the electrical load and to control the amount of power delivered to the electrical load. The load control device also includes a controller for adjusting the average magnitude of the load current to a target current. The controller pulse-width modulates the magnitude of the load current between a first current less than the target current and a second current greater than the target current. When the target current is dynamically changing, the controller is operable to adjust to the average magnitude of the load current towards the sum of the target current and a supplemental signal.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: February 2, 2016
    Assignee: LUTRON ELECTRONICS CO., INC.
    Inventor: Dragan Veskovic
  • Patent number: 9232574
    Abstract: A load control device for controlling the amount of power delivered to an electrical load (e.g., an LED light source) comprises an isolated forward converter comprising a transformer, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducting through to a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The forward converter comprises a sense resistor coupled in series with the primary winding for producing the sense voltage that is representative of the primary current. The current sense circuit receives the sense voltage and averages the sense voltage when the semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 5, 2016
    Assignee: LUTRON ELECTRONICS CO., INC.
    Inventor: Dragan Veskovic
  • Patent number: 8878447
    Abstract: A load control device, such as an electronic ballast, for controlling the power delivered from an AC power source to an electrical load, such as one or more fluorescent lamps, comprises a power converter having an inductor and a power switching device coupled to the inductor, a load control circuit adapted to be coupled to the electrical load, and a control circuit operable to calculate an average input power of the load control device. The control circuit may be operable to calculate a cumulative output power of the power converter while the ballast is preheating filaments of the lamps, and to subsequently determine a fault condition in the lamps in response to the calculated cumulative output power of the power converter. Further, the control circuit may be operable to transmit a digital message including the calculated average input power of the load control device.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: November 4, 2014
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Venkatesh Chitta, Jonathan Robert Quayle, Alexander J. Rovnan, Mark S. Taipale, Dragan Veskovic
  • Publication number: 20140247117
    Abstract: A method of automatically programming a new load control device that replaces an old load control device takes advantage of a remote identification tag (e.g., an RFID tag) located in the vicinity of the old device. The remote identification tag stores an identifier that is representative of a location in which the old device is installed. The method includes the steps of: (1) storing a setting of an old device in a memory of a controller; (2) associating the setting with the identifier of the old device in the memory of the controller; (3) the new device retrieving the identifier from the remote identification tag after the new device is installed in the location of the old device; (4) the new device transmitting the identifier to the controller; and (5) the controller transmitting the setting of the old device to the new device in response to receiving the identifier.
    Type: Application
    Filed: May 9, 2014
    Publication date: September 4, 2014
    Inventor: Dragan Veskovic
  • Patent number: 8760262
    Abstract: A method of automatically programming a new load control device that replaces an old load control device takes advantage of a remote identification tag (e.g., an RFID tag) located in the vicinity of the old device. The remote identification tag stores an identifier that is representative of a location in which the old device is installed. The method includes the steps of: (1) storing a setting of an old device in a memory of a controller; (2) associating the setting with the identifier of the old device in the memory of the controller; (3) the new device retrieving the identifier from the remote identification tag after the new device is installed in the location of the old device; (4) the new device transmitting the identifier to the controller; and (5) the controller transmitting the setting of the old device to the new device in response to receiving the identifier.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: June 24, 2014
    Assignee: Lutron Electronics Co., Inc.
    Inventor: Dragan Veskovic
  • Publication number: 20140091722
    Abstract: A load control device, such as an electronic ballast, for controlling the power delivered from an AC power source to an electrical load, such as one or more fluorescent lamps, comprises a power converter having an inductor and a power switching device coupled to the inductor, a load control circuit adapted to be coupled to the electrical load, and a control circuit operable to calculate an average input power of the load control device. The control circuit may be operable to calculate a cumulative output power of the power converter while the ballast is preheating filaments of the lamps, and to subsequently determine a fault condition in the lamps in response to the calculated cumulative output power of the power converter. Further, the control circuit may be operable to transmit a digital message including the calculated average input power of the load control device.
    Type: Application
    Filed: December 6, 2013
    Publication date: April 3, 2014
    Inventors: Venkatesh Chitta, Jonathan Robert Quayle, Alexander J. Rovnan, Mark S. Taipale, Dragan Veskovic
  • Patent number: 8680787
    Abstract: An LED driver for controlling the intensity of an LED light source includes a power converter circuit for generating a DC bus voltage, an LED drive circuit for receiving the bus voltage and controlling a load current through, and thus the intensity of, the LED light source, and a controller operatively coupled to the power converter circuit and the LED drive circuit. The LED drive circuit comprises a controllable-impedance circuit coupled in series with the LED light source. The controller adjusts the magnitude of the bus voltage to a target bus voltage and generates a drive signal for controlling the controllable-impedance circuit. To adjust the intensity of the LED light source, the controller controls the magnitudes of both the load current and the regulator voltage. The controller controls the magnitude of the regulator voltage by simultaneously maintaining the magnitude of the drive signal constant and adjusting the target bus voltage.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: March 25, 2014
    Assignee: Lutron Electronics Co., Inc.
    Inventor: Dragan Veskovic
  • Patent number: RE46715
    Abstract: A load control device for controlling the amount of power delivered to an electrical load (e.g., an LED light source) comprises an isolated forward converter comprising a transformer, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducting through to a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The forward converter comprises a sense resistor coupled in series with the primary winding for producing the sense voltage that is representative of the primary current. The current sense circuit receives the sense voltage and averages the sense voltage when the semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: February 13, 2018
    Assignee: Lutron Electronics Co., Inc.
    Inventor: Dragan Veskovic