Christopher W Fletcher

US Patent:

6782063, Aug 24, 2004

Filed:

Sep 12, 2000

Appl. No.:

09/659853

Inventors:

J. Mark Stevenson - San Diego CA
Susan G. Briest - San Diego CA
Jack R. Olson - San Diego CA
Alan Fronk - Oceanside CA
Vincent K. McDonald - San Diego CA
Christopher L. Fletcher - San Diego CA
William H. Marn - San Diego CA

Assignee:

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

International Classification:

H04L 2708

US Classification:

375345, 4552341, 4552342

Abstract:

The invention provides an automatic gain control system that is implemented by digital hardware. The digital hardware determines the range of a set of digital data values, and then examines each digital data value in a sequence. An index counter increments a sample count index i each time a new digital data value is examined and determines the absolute value of the i digital data value. The digital hardware also counts both the number j of digital data values that exceed a high percentage value of the range, and the number k of digital data values that are less than a low percentage value of the range as the digital hardware runs through the sequence. If the digital hardware determines that a digital data value is greater than the high percentage value, the ratio j/i exceeds a first threshold value, and the gain level is not set to the lowest gain level, then the gain is decreased. If the digital hardware determines that a digital data value is less than the low percentage value, the ratio k/i exceeds a second threshold value, a predetermined interval of time has elapsed, and the gain level is not set to the highest gain level, then the gain is increased.

US Patent:

8274861, Sep 25, 2012

Filed:

Dec 8, 2009

Appl. No.:

12/632866

Inventors:

William H. Marn - San Diego CA, US
James Ben Penney - San Diego CA, US
Lonnie Allen Hamme - Jamul CA, US
Christopher Lawson Fletcher - San Diego CA, US
Robert Kevin Creber - San Diego CA, US
James Gabriel Buescher - San Diego CA, US

Assignee:

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

International Classification:

H04B 13/02
H04B 7/14

US Classification:

367134

Abstract:

An underwater wireless network can include plurality of nodes, each node having a cylindrical housing, a repeater, a transducer and a buoy. The housing defines a void and encloses the repeater. The transducer can be tethered to the housing and a buoy can be tethered to said transducer. Each node also includes at least two hemi-cylindrical flukes that can be pivotably attached to the housing. The housing can further be formed with at least two flood ports, and corresponding plugs are inserted into a respective fill port. Lanyards interconnect each flukes with a respective plug. During transport, the flukes can surround the transducer and the void is empty, which renders the node neutrally buoyant for ease of transport. For deployment, the flukes are pivoted away from each other to tighten the lanyards, which pull the plugs out of the flood ports, to further flood the void and deploy the node.

US Patent:

20190096514, Mar 28, 2019

Filed:

Sep 14, 2018

Appl. No.:

16/131918

Inventors:

- San Diego CA, US
Christopher Fletcher - San Diego CA, US

International Classification:

G16H 20/00
G16H 50/20

Abstract:

Systems, devices, and methods for providing client care alert are disclosed herein. The method can include storing symptom information related to a plurality of medical conditions. The method can include receiving client information via a first application and generating a care plan for the client based on the client information and the symptom information. The method can include generating a set of tasks to be completed during a care session based on the care plan. The method can include receiving task input related to completion of the set of tasks. The task input may indicate the presence of at least one symptom related to a medical condition. Thereafter, the method can include transmitting a message including an identification of the at least one symptom to a second application.