Patents by Inventor Ben Verhoeven

Ben Verhoeven 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).

  • Driver circuit with load discharge detection
    Patent number: 6717369
    Abstract: The present invention provides a driver circuit with load discharge detection particularly suitable for use with electro-luminescence (EL) lamps. The driver circuit determines the moment at which the load has been discharged by a defined discharge current. This information is used to start the new charging cycle of the load. The discharge time adapts itself to different load sizes or load voltages. Also, a minimum amount of time is used to discharge the load, so that a maximum amount of time is available for charging the load at a predetermined frequency. As a result, a higher performance can be achieved.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: April 6, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Ben Verhoeven, Alfred Grakist
  • DRIVER CIRCUIT WITH LOAD DISCHARGE DETECTION
    Publication number: 20030227260
    Abstract: The present invention provides a driver circuit with load discharge detection particularly suitable for use with electro-luminescence (EL) lamps. The driver circuit determines the moment at which the load has been discharged by a defined discharge current. This information is used to start the new charging cycle of the load. The discharge time adapts itself to different load sizes or load voltages. Also, a minimum amount of time is used to discharge the load, so that a maximum amount of time is available for charging the load at a predetermined frequency. As a result, a higher performance can be achieved.
    Type: Application
    Filed: June 11, 2002
    Publication date: December 11, 2003
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Ben Verhoeven, Alfred Grakist