Patents by Inventor Ferdinand Johannes Petrus Marinus Seuren

Ferdinand Johannes Petrus Marinus Seuren 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).

  • LAMP DRIVING CIRCUIT, AND DETECTION CIRCUIT FOR DETECTING AN END-OF-LIFE CONDITION
    Publication number: 20100026189
    Abstract: A lamp driving circuit (110) for driving a gas discharge lamp (11) is described, comprising current generating means (M1, M2, D1, D2, L, C, C1, C2) for generating a lamp current in discontinuous mode or critical discontinuous mode, and a controller (12) for controlling the operation of the current generating means. In an embodiment, the current generating means have HBCF topology. A zero-crossings detector (120) detects zero-crossings of the lamp current, and generates a detection pulse for each detected zero-crossing. A signal processor (130) monitors the detection pulses from the zero-crossings detector (120), and generates a lamp current inhibit signal if the detection pulses are absent during at least a predetermined time interval. The controller, in response to the lamp current inhibit signal, switches off the lamp current generating means.
    Type: Application
    Filed: October 8, 2007
    Publication date: February 4, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Jozef Petrus Emanuel De Krijger, Marcel Johannes Maria Bucks, Ferdinand Johannes Petrus Marinus Seuren, Engbert Bernard Gerard Nijhof