Patents by Inventor Dan Maarten Kerst Jens

Dan Maarten Kerst Jens 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).

  • Adaptable driver circuit for driving a light circuit
    Patent number: 9313838
    Abstract: Driver circuits (20) for driving light circuits (21) comprising light emitting diodes are provided with converters (22) for converting input signals into output signals comprising pulses per cycle. The converters (22) comprise adapters (33) for, in response to differences between measured amplitude values of the input/output signals and nominal amplitude values of the input/output signals, adapting widths of the pulses. Then, signals having relatively precise amplitudes are no longer required. Said adapting may comprise increasing/decreasing the widths in case the measured amplitude value is smaller/larger, respectively, than the nominal amplitude value. The measured amplitude value divided by the nominal amplitude value is equal to a correction value. An adjusted duty cycle of the output signal may be made equal to a nominal duty cycle of the output signal divided by the correction value. Said adapting may be performed in a production/testing process environment.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: April 12, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Wouter Oepts, Dan Maarten Kerst Jens
  • ADAPTABLE DRIVER CIRCUIT FOR DRIVING A LIGHT CIRCUIT
    Publication number: 20130249430
    Abstract: Driver circuits (20) for driving light circuits (21) comprising light emitting diodes are provided with converters (22) for converting input signals into output signals comprising pulses per cycle. The converters (22) comprise adapters (33) for, in response to differences between measured amplitude values of the input/output signals and nominal amplitude values of the input/output signals, adapting widths of the pulses. Then, signals having relatively precise amplitudes are no longer required. Said adapting may comprise increasing/decreasing the widths in case the measured amplitude value is smaller/larger, respectively, than the nominal amplitude value. The measured amplitude value divided by the nominal amplitude value is equal to a correction value. An adjusted duty cycle of the output signal may be made equal to a nominal duty cycle of the output signal divided by the correction value. Said adapting may be performed in a production/testing process environment.
    Type: Application
    Filed: November 22, 2011
    Publication date: September 26, 2013
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Wouter Oepts, Dan Maarten Kerst Jens