Glenn Arthur Marnie

US Patent:

6870941, Mar 22, 2005

Filed:

Jul 15, 2002

Appl. No.:

10/194904

Inventors:

Glenn A. Marnie - Oceanside CA, US

International Classification:

H04R001/02

US Classification:

381337, 381353, 381354, 181161

Abstract:

A dipole radiating dynamic speaker design comprises a diaphragm () providing a surface for radiating acoustic output, a voice coil assembly () for driving the diaphragm, and a magnet system for providing magnetic flux across the voice coil assembly. The speaker incorporates a vented pole flux conductor () and a vent adjacent to the diaphragm permitting the rearward acoustic output to propagate away from the diaphragm producing acoustic output as a dipole radiator. A method of utilizing the dipole radiating dynamic speaker design for tweeter and mid-range speaker applications used in home, automotive, and professional audio systems is disclosed. In addition a novel enclosure design is disclosed that utilizes a front panel perimeter vent providing improvement of audio reproduction quality for mid-range speaker applications.

US Patent:

56248482, Apr 29, 1997

Filed:

May 1, 1996

Appl. No.:

8/640501

Inventors:

Glenn Marnie - Oceanside CA
Earl M. Dolnick - Encinitas CA
Ivan J. Nelson - San Diego CA

Assignee:

Quantum Group, Inc. - San Diego CA

International Classification:

G01N 2177

US Classification:

436164

Abstract:

The present invention provides an apparatus and method for enhancing the response of a biometric sensor for sensing toxins by measuring the rate of change of sensor readings. An LED, optically coupled to the sensor and a photodiode, transmits light through the sensor to the photodiode. The photocurrent from the photodiode is converted to a digital sensor reading value proportional to the darkness of the sensor and is loaded into a microprocessor. In the microprocessor, the sensor readings are essentially differentiated to determine the rate of change of the sensor readings. The rate of change information is used to trigger an alarm condition indicative of a predetermined level of sensed toxins.

US Patent:

55739539, Nov 12, 1996

Filed:

Sep 9, 1994

Appl. No.:

8/303357

Inventors:

Glenn Marnie - Oceanside CA
Earl M. Dolnick - Encinitas CA
Ivan J. Nelson - San Diego CA

Assignee:

Quantum Group, Inc. - San Diego CA

International Classification:

G01N 2101

US Classification:

436164

Abstract:

The present invention provides an apparatus and method for enhancing the response of a biometric sensor for sensing toxins by measuring the rate of change of sensor readings. An LED, optically coupled to the sensor and a photodiode, transmits light through the sensor to the photodiode. The photocurrent from the photodiode is converted to a digital sensor reading value proportional to the darkness of the sensor and is loaded into a microprocessor. In the microprocessor, the sensor readings are essentially differentiated to determine the rate of change of the sensor readings. The rate of change information is used to trigger an alarm condition indicative of a predetermined level of sensed toxins.