Jason Thomas Christensen

US Patent:

8446132, May 21, 2013

Filed:

Feb 4, 2011

Appl. No.:

13/020982

Inventors:

James L. Yost - Plano TX, US
John E. Overland - Plymouth MN, US
Jason A. Christensen - Plymouth MN, US

Assignee:

Alliant Techsystems Inc. - Arlington VA

International Classification:

G05F 1/10
G05F 1/652
G05F 1/40

US Classification:

323223, 323222, 323224, 323299, 323282, 323284, 323285, 323286

Abstract:

Methods and apparatuses are disclosed for power conversion for fuzes and other electrical power consumers. A current monitor coupled to a power source signal generates a source current indicator. A controller generates a control signal responsive to the source current indicator. A filter well is coupled to the power source signal. An inductive switch circuit switchably grounds a rectified inductive load coupled to an output side of the filter well in response to the control signal, developing a pulsed power signal. A resonance rectifier presents substantially lossless resistive impedance for the pulsed power signal and rectifies the pulsed power signal to charge a charge storage device and generate a power output signal. The filter well, the inductive switch circuit, and the controller maintain the source current indicator within a predetermined current range by filtering the pulsed power signal and adjusting the control signal's frequency responsive to the source current indicator.

US Patent:

20130095879, Apr 18, 2013

Filed:

Oct 17, 2011

Appl. No.:

13/274598

Inventors:

Vagish Gupta - Bangalore, IN
Satish V. Brahme - Lindenhurst IL, US
Donald A. Dorsey - Vernon Hills IL, US
Jason D. Christensen - Lake Geneva WI, US

Assignee:

MOTOROLA MOBILITY, INC. - Libertyville IL

International Classification:

H04W 72/02
H04W 74/08
H04W 72/10
H04W 24/00

US Classification:

455525

Abstract:

A communication device establishes a connection in a congested wireless communications network environment by systematically reducing a probability of attempting to connect to a strongest, but overly-congested, cell. A transceiver of the communications device attempts at least one first Random Access Channel (RACH) procedure with a first cell that is currently designated as a serving cell. A RACH controller of the communications device detects a failure to successfully connect to the first cell via the at least one first RACH procedure, autonomously determines, based at least on a probability value, which is greater than 0% and less than 100%, whether to de-prioritize the first cell for a period of time, and, in response to determining to de-prioritize the first cell, reduces a priority value assigned at the UE to the first cell for cell selection/reselection, and assigns a selected time period during which the priority value remains reduced.