Patents by Inventor Douglas Plumb

Douglas Plumb 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).

  • Method of testing a vehicle audio system using a composite signal
    Patent number: 6957134
    Abstract: The present invention provides a method for evaluating the presence and performance of a vehicle's audio system drivers without the need for having to manually or remotely control the audio system parameters during the testing period. After establishing baseline characteristics for a driver group to be evaluated, a predetermined broadcast signal is used to excite a particular subgroup of drivers within the driver group. The output from the subgroup of driver drivers is detected by microphones strategically disposed within the vehicle amongst the group of drivers. The detected output from the driver drivers is thereafter decoded and analyzed with respect to the baseline performance to determine if the drivers are performing within expected specifications.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: October 18, 2005
    Assignee: B & G L.L.C.
    Inventors: Robert Ramseyer, Douglas Plumb
  • Method of testing a vehicle audio system using a composite signal
    Publication number: 20040153224
    Abstract: The present invention provides a method for evaluating the presence and performance of a vehicle's audio system drivers without the need for having to manually or remotely control the audio system parameters during the testing period. After establishing baseline characteristics for a driver group to be evaluated, a predetermined broadcast signal is used to excite a particular subgroup of drivers within the driver group. The output from the subgroup of driver drivers is detected by microphones strategically disposed within the vehicle amongst the group of drivers. The detected output from the driver drivers is thereafter decoded and analyzed with respect to the baseline performance to determine if the drivers are performing within expected specifications.
    Type: Application
    Filed: January 23, 2004
    Publication date: August 5, 2004
    Inventors: Robert Ramseyer, Douglas Plumb