Doneil J Hoekman

52105229, May 11, 1993

Oct 9, 1991

7/773223

Robert J. Hoekman - Truckee CA
Doneil J. Hoekman - Gilroy CA

B60Q 150

340467

An early warning brake light system provides an accelerator pedal-mounted sensor and simple circuitry connected to a vehicle's existing brake light switch circuit. During a panic stop the sensor attached to the accelerator pedal activates the early warning circuitry and immediately delivers current to illuminate the rear brake lights, even before the brake pedal has been depressed, giving trailing vehicles an advance warning that the lead vehicle will be braking.

57033587, Dec 30, 1997

Sep 11, 1995

8/526599

Doneil J. Hoekman - Gilroy CA
Paul E. Kelley - San Jose CA

Teledyne Electronic Technologies - Mountain View CA

B01D 5944
H01J 4940

250282

A method for generating a filtered noise signal, which includes the steps of generating a broadband signal having optimized (reduced or minimized) dynamic range, and filtering the broadband signal in a notch filter to generate a broadband signal whose frequency-amplitude spectrum has one or more notches (the "filtered noise" signal). In preferred embodiments, the filtered noise signal is a voltage signal suitable for application to an ion trap during a mass spectrometry operation. The invention enables rapid generation of different filtered noise signals (for use in different mass spectrometry experiments) by filtering a single, optimized broadband signal using a set of different notch filters, each having a simple, easily implementable design. The invention enables rapid generation of filtered noise signals (for example, in real time during mass spectrometry experiments) without prior knowledge of the mass spectrum of unwanted ions to be ejected from a trap during application of the filtered noise signal to the trap. The invention also enables rapid generation of a filtered noise signal having no missing frequency components outside the notches of the notch filter employed to generate the filtered noise signal.

54499054, Sep 12, 1995

Jul 27, 1994

8/281505

Doneil J. Hoekman - Gilroy CA
Paul E. Kelley - San Jose CA

Teledyne ET - Mountain View CA

B01D 5944
H01J 4940

250282

A method for generating a filtered noise signal, which includes the steps of generating a broadband signal having optimized (reduced or minimized) dynamic range, and filtering the broadband signal in a notch filter to generate a broadband signal whose frequency-amplitude spectrum has one or more notches (the "filtered noise" signal). In preferred embodiments, the filtered noise signal is a voltage signal suitable for application to an ion trap during a mass spectrometry operation. The invention enables rapid generation of different filtered noise signals (for use in different mass spectrometry experiments) by filtering a single, optimized broadband signal using a set of different notch filters, each having a simple, easily implementable design. The invention enables rapid generation of filtered noise signals (for example, in real time during mass spectrometry experiments) without prior knowledge of the mass spectrum of unwanted ions to be ejected from a trap during application of the filtered noise signal to the trap. The invention also enables rapid generation of a filtered noise signal having no missing frequency components outside the notches of the notch filter employed to generate the filtered noise signal.