Paul S Hooper

US Patent:

53813383, Jan 10, 1995

Filed:

Nov 18, 1993

Appl. No.:

8/154994

Inventors:

David A. Wysocki - Madison WI
Paul S. Hooper - Madison WI

International Classification:

G06F 1550

US Classification:

364449

Abstract:

Herein is presented a positioning, navigation and collision avoidance system for ships, aircraft, land vehicles and the like, which utilizes a geo-referenced digital orthophotograph data-base and a positioning signal to display upon a computer stereo graphics device a high visibility dynamic photographic image of the user's immediate environment, including both moving and stationary obstacles. The position and temporal data along with the geo-referenced elevation data utilized to derive the digital orthophotograph(s) can serve to warn the user of nearby obstacles; and optionally, to implement semi-automatic avoidance. Substituting user generated x-y-z positions and times, the system may be used in a static mode as a flight simulator or a simulator for other modes of transportation. The system may also be used as a mobile Geographic Information Systems decision making tool with the addition of user supplied geo-referenced digital data layers.

US Patent:

49268791, May 22, 1990

Filed:

Sep 12, 1989

Appl. No.:

7/406192

Inventors:

Christophe Jean-Paul Sevrain - Fitchburg WI
Heather R. Schramm - Minneapolis MN
Daniel G. Schmidt - Dane WI
Paul S. Hooper - Stoughton WI
Mary P. Thomas - Madison WI

Assignee:

Sevrain-Tech, Inc. - Madison WI

International Classification:

A61N 102
A61N 136

US Classification:

128798

Abstract:

A device for electrically stimulating the skin in response to an electrical signal includes a flexible substrate on one surface of which is formed an electrically conductive pattern having a number of electrodes. Each of the electrodes is coated with a layer of a corrosion resistive material, such as titanium. An insulating layer extends over this surface of the substrate and has apertures therethrough aligned with the electrodes. A conductive ground plane layer is then applied over the insulating layer and also has apertures therethrough which are aligned with each of the electrodes. The stimulator is placed against the user so that the coated electrodes are in contact with the skin. In response to the received electrical signal, each electrode is sequentially stimulated by a negative and a positive electrical pulse. The negative and positive pulses have magnitudes which differ in a predetermined relationship so that the pH of the skin adjacent to the electrode is not altered substantially by the electrical stimulation.