Patents by Inventor Alan Rooke

Alan Rooke 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).

  • Integration circuit to determine ignition timing
    Patent number: 5430370
    Abstract: A signal conditioning circuit is described for detecting zero crossings in the output of an inductive or variable reluctance sensor, which comprises a circuit (20, 30) for converting the output signal of the sensor into a signal having substantially frequency independent amplitude and the same frequency as the sensor output signal and a circuit (40) for detecting zero crossings of the converted output signal. The circuit for converting the output signal of the sensor comprises a comparator (30) for comparing the instantaneous value of the output signal of the sensor with a reference signal, a resettable integration circuit (20) having a storage capacitor (26) for integrating the output of the sensor with respect to time, and an electronic switch (26) means responsive to the output signal of the comparator (30) for resetting the integration circuit by discharging the storage capacitor (24).
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: July 4, 1995
    Assignee: Ford Motor Company
    Inventor: Alan Rooke