John Stephen Mcgregor

US Patent:

54649650, Nov 7, 1995

Filed:

Apr 20, 1993

Appl. No.:

8/049925

Inventors:

John A. McGregor - Phoenix AZ
Robert P. Parris - Phoenix AZ

Assignee:

Honeywell Inc. - Minneapolis MN

International Classification:

H05B 102

US Classification:

219497

Abstract:

A fast and accurate temperature controller for a device heated by current through a resistive element, such as various air data probes, wherein the resistance of the element varies with temperature. The temperature controller samples the temperature by selecting the resistance value of the resistive element. Analog calculations are performed based on the instantaneous applied voltage and current returned through the resistive element. Current through the resistive element is controlled by comparing the resistance of the element to a resistance value selected in accordance with the temperature characteristics of the element. Insensitivity to voltage and frequency variations is provided with a highly reliable and uncomplicated circuit having a small number of components.

US Patent:

20180129790, May 10, 2018

Filed:

Nov 7, 2016

Appl. No.:

15/345040

Inventors:

- Morris Plains NJ, US
Dilip Kumar Behara - Bangalore, IN
John McGregor - Phoenix AZ, US
Christian Dale Brinkley - Plymouth MN, US
Scott Redmond - Phoenix AZ, US

Assignee:

HONEYWELL INTERNATIONAL INC. - Morris Plains NJ

International Classification:

G06F 21/10
G06F 21/12
B64C 25/26
B64C 25/42

Abstract:

A method of managing a license for a software module of a vehicle having a plurality of operating states includes receiving, by a processor, license term data of the license. The license term data includes an expiration time limit of the license. The method also includes observing, by a sensor, a condition of the vehicle. Additionally, the method includes determining, by the processor, an operating state of the vehicle based on the condition observed by the sensor. Furthermore, the method includes determining, by the processor, whether to deny access to the software module according to the expiration time limit based on the determined operating state.