James H Howe

US Patent:

20060139475, Jun 29, 2006

Filed:

Dec 23, 2004

Appl. No.:

11/022370

Inventors:

John Esch - Burnsville MN, US
Rick Stevens - Apple Valley MN, US
Kevin Thorson - Eagan MN, US
James Howe - Burnsville MN, US
Stephen Sohn - Shoreview MN, US
Timothy Zajic - Boxford MA, US

International Classification:

H04N 5/225

US Classification:

348340000

Abstract:

Systems and apparatuses are provided that include a number of cameras. One embodiment includes a surveillance camera. The embodiment includes a camera having a lens with a first field of view. The camera can be mounted to an imaging circuit board having an imaging circuit provided thereon for converting image data from the lens into a digital field of view.

US Patent:

46911260, Sep 1, 1987

Filed:

Aug 29, 1985

Appl. No.:

6/770461

Inventors:

Katherine A. Splett - Burnsville MN
James A. Howe - Burnsville MN

Assignee:

Sperry Corporation - Blue Bell PA

International Classification:

H03K 100
H03K 1702

US Classification:

307441

Abstract:

A synchronous clock circuit is provided on each module of an electronic digital system formed of a plurality of modules. Each clock circuit has two control pins which are used by control logic to determine whether or not the clock on a particular module is disabled, is operating as the master clock for the system, or is providing a backup function for the master clock. The common clock line is supplied through a buffer to the components on the module which require clocking. Logic circuitry on the backup clock mode insures the backup clock is in a ready condition in case there should be either failure of the master clock oscillator or if the master clock module is removed from the unit. All of the clock circuits of the different modules may be constructed in an identical manner, with the control of the function of the circuitry being provided simply by control of the logic level on the two terminals. A clock detecting time-out circuit is provided on each of the modules, which has a timing period which is slightly longer than the clock period.

US Patent:

39354792, Jan 27, 1976

Filed:

Dec 20, 1974

Appl. No.:

5/535061

Inventors:

John H. Andreasen - St. Paul MN
James A. Howe - Burnsville MN

Assignee:

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

International Classification:

H03K 508

US Classification:

307237

Abstract:

A dynamic damping apparatus wherein the current source is critically damped during rise and fall of current but the DC flattop of the current is unaffected by the fluctuations of load voltage. Therefore the output impedance of the current source is low during rise and fall times, but high during the flattop. This increases current source regulation.

US Patent:

48355453, May 30, 1989

Filed:

Nov 30, 1987

Appl. No.:

7/126479

Inventors:

Donald V. Mager - St. Paul MN
James A. Howe - Burnsville MN

Assignee:

Printware, Inc. - Mendota Heights MN

International Classification:

G01D 900
G01D 942

US Classification:

346 11

Abstract:

A photosensitive, photoconductive media moving in a first direction relative to a laser light beam scanning in a second direction, transverse to the first direction, incurs velocity variations. These velocity variations result in variations in the absolute and relative heights of white and black image features. This printed image nonuniformity is especially visually detectable for closely spaced parallel lines in the second direction, and/or gray scale. An optical velocity sensor senses instantaneous media velocity. An analog or digital velocity error processor maintains a running average velocity and determines, by subtraction, an instantaneous velocity error as the difference between currently sensed and running average velocities. The instantaneous velocity error so determined is used to adjust the intensity of the laser light beam to be proportionally brighter (dimmer), exposing a wider (narrower) scan line, on a faster-moving (slower-moving) media region. By this compensating, the ratio of white and black image features is maintained constant during media velocity variations.