Eric W Swanson

US Patent:

40385299, Jul 26, 1977

Filed:

Jun 14, 1976

Appl. No.:

5/695614

Inventors:

Eric R. Swanson - San Diego CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01S 744
G06F 1550

US Classification:

23515027

Abstract:

A monitor for notifying a vehicle using VLF navigation of an abnormal conion of VLF wave propagation. Sensing means, including an antenna, oscillator, IF mixer, and phase tracker is provided to periodically sense changes in the phase angle of a VLF wave received by the monitor, and to couple a succession of values of an updating quantity into a data processing means, each value corresponding to a sensed amount of phase change. The data processing means learns what comprises a normal condition of VLF wave propagation by averaging successive values of the updating quantity, and provides notice of an abnormal condition whenever a received value of the updating quantity varies from the previously computed average by an amount in excess of a preselected criterion.

US Patent:

40729508, Feb 7, 1978

Filed:

Sep 13, 1976

Appl. No.:

5/722456

Inventors:

Eric R. Swanson - San Diego CA

International Classification:

G01S 130

US Classification:

343105R

Abstract:

A navigation aid comprises two transmitters transmitting signals in the LF/MF range (250 kilohertz-490 kilohertz) and a receiver indicator for receiving each of the transmitted signals, translating them to a common frequency, and indicating the phase difference at any given position. Frequency stablizing means are coupled to each transmitter to stabilize the frequency of each transmitted signal and to prevent the differential frequency error from exceeding a selected limit.

US Patent:

49915290, Feb 12, 1991

Filed:

Feb 28, 1972

Appl. No.:

5/230543

Inventors:

John W. McKune - Glendora CA
Arnold O. Musolf - Glendora CA
Timothy W. Hales - Redlands CA
Eric D. Swanson - Sunset Beach CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

B63B 134
B05B 700

US Classification:

114 67R

Abstract:

A dispenser for ejecting slurry into a liquid stream so that optimum mixing s attained. This dispenser may include an elongated body having nose and main sections, the forward end of the main body section having an annular slurry receiving cavity which is located adjacent the nose. Means are provided for mounting the nose to the main body section for longitudinal movement so as to open and close the annular cavity to the liquid stream. In this manner the slurry can be ejected and dispersed into the liquid stream when the annular cavity is opened thereto. In order to obtain controlled mixing the dispenser may further include a conduit in which the elongated body is disposed.

US Patent:

20180165490, Jun 14, 2018

Filed:

Dec 9, 2016

Appl. No.:

15/373790

Inventors:

- Fort Mill SC, US
Eric Swanson - Seattle WA, US
Robert Nguon - Everett WA, US

International Classification:

G06K 7/10
G06K 19/06

Abstract:

A method of encoding indicia for one or more fields and subfields of a document is described. The one or more fields and subfields are encoded in extraction fields of the document with field descriptors. The field descriptors are unique at a parent level for the one or more fields and subfields, and provide information on relationships between the one or more fields and subfields. The field descriptors can include a current level of the field, a field's count identifier, a total number of fields at the current level, and an indication if the current level has subfields. The field descriptors can be encoded in the extraction field border via an embedded barcode.

US Patent:

20170180577, Jun 22, 2017

Filed:

Dec 21, 2015

Appl. No.:

14/975939

Inventors:

- Fort Mill SC, US
Justin Lundberg - Snohomish WA, US
Eric R. Swanson - Seattle WA, US

International Classification:

H04N 1/00
H04N 1/60
H04N 1/409

Abstract:

A system of border detection on a document and for producing an image of the document is provided. In an exemplary embodiment, the system comprises: a frequency specific reflective border on the document; an image capture device; a filter tuned to the frequency of the reflective border; a border detection algorithm; and a processor communicatively linked to the image capture device, to the notch filter, and to the border detection algorithm. The image capture device is configured to capture an image of the document. The processor is configured to apply the filter to the captured image and to produce a second frame. The processor is further configured to apply the border detection algorithm to the second frame to determine a document border mask. The processor is further configured to apply the border mask to the captured image to produce a document image.