David M Snyder

US Patent:

7861019, Dec 28, 2010

Filed:

May 4, 2007

Appl. No.:

11/744370

Inventors:

Michael A. Fuchs - Wauwatosa WI, US
David A. Snyder - Waukesha WI, US

Assignee:

Rockwell Automation Technologies, Inc. - Mayfield Heights OH

International Classification:

G06F 13/12
G06F 15/177

US Classification:

710 62, 710 8, 710 10, 710 11, 710 14, 710 72, 710 73, 710104, 710300, 710301, 709220, 709221, 719321, 719327

Abstract:

A computer system, and related components including network interface devices, as well as methods for implementing and/or operating network interface devices to achieve network-based communications, are disclosed. In at least one embodiment, the computer system includes a network interface device, and a bus driver in communication with the network interface device. The bus driver has access to a plurality of driver programs, and the bus driver is capable of causing an installation of one such driver program on the network interface device. Also, in at least some embodiments, the bus driver facilitates communications between multiple network interface devices and an operating system of the computer system, and/or between the network interface devices and user mode applications implementing graphical user interfaces. Further, in at least some embodiments, the bus driver governs operation of the network interface devices, for example, in relation to power management and/or interrupt handling.

US Patent:

8112769, Feb 7, 2012

Filed:

May 4, 2007

Appl. No.:

11/744338

Inventors:

Michael A. Fuchs - Wauwatosa WI, US
David A. Snyder - Waukesha WI, US

Assignee:

Rockwell Automation Technologies, Inc. - Mayfield Heights OH

International Classification:

G06F 9/44
G06F 9/46
G06F 13/00
G06F 3/00
G06F 13/42

US Classification:

719327, 710 8, 710 11, 710100, 710105

Abstract:

A computer system, and related components including network interface devices, as well as methods for implementing and/or operating network interface devices to achieve network-based communications, are disclosed. In at least one embodiment, the computer system includes a network interface device, and a bus driver in communication with the network interface device. The bus driver has access to a plurality of driver programs, and the bus driver is capable of causing an installation of one such driver program on the network interface device. Also, in at least some embodiments, the bus driver facilitates communications between multiple network interface devices and an operating system of the computer system, and/or between the network interface devices and user mode applications implementing graphical user interfaces. Further, in at least some embodiments, the bus driver governs operation of the network interface devices, for example, in relation to power management and/or interrupt handling.

US Patent:

44699620, Sep 4, 1984

Filed:

Oct 26, 1981

Appl. No.:

6/315334

Inventors:

David E. Snyder - Santa Monica CA

Assignee:

Hughes Aircraft Company - El Segundo CA

International Classification:

H03K 19096
H03K 1920
H03K 17687
G11C 1928

US Classification:

307450

Abstract:

The present invention provides a circuit comprising (1) a logic element responsive to data of first and second negative voltage potentials, the logic element having a depletion mode MESFET data input gate, and (2) a depletion mode MESFET transmission gate operatively associated with the data input gate for enabling the selective serial transmission of data therethrough to the logic element in response to clock signals of third and fourth negative voltage potentials, the pinch-off threshold voltage of the data input gate being between approximately the first and second negative voltage potentials, the pinch-off threshold voltage of the transmission gate being between approximately the third and fourth negative voltage potentials, said third negative voltage potential being approximately equal to or more negative than said second negative voltage potential, said first negative voltage potential being more positive than said second negative voltage potential, and said fourth negative voltage potential being more negative than said third negative voltage potential.

US Patent:

20160357176, Dec 8, 2016

Filed:

Jun 2, 2015

Appl. No.:

14/728164

Inventors:

- Mayfield OH, US
David A. Vasko - Hartland WI, US
Timothy Patrick Boppre - Jackson WI, US
David A. Snyder - Waukesha WI, US
Alex Laurence Nicoll - Brookfield WI, US
Brian J. McMullen - Cedarburg WI, US
Daniel B. Seger - Kenessaw GA, US
John B. Dart - Nashotah WI, US
Timothy F. Roback - Waukesha WI, US
Paul G. Kucharski - Mukwonago WI, US
Kevin Colloton - Waukesha WI, US

International Classification:

G05B 19/418
H04L 9/32
H04L 29/06

Abstract:

An industrial control system providing security against tampering or modification generates periodic state thumbprints defining a state of control elements that may be forwarded to a security or safety appliance for comparison to a benchmark thumbprint indicating no tampering. The transmitted state thumbprint may capture not only programs but also configuration and environmental states of the control element.

US Patent:

20160357177, Dec 8, 2016

Filed:

Jun 2, 2015

Appl. No.:

14/728180

Inventors:

- Mayfield OH, US
David A. Vasko - Hartland WI, US
Timothy Patrick Boppre - Jackson WI, US
David A. Snyder - Waukesha WI, US
Alex Laurence Nicoll - Brookfield WI, US
Brian J. McMullen - Cedarburg WI, US
Daniel B. Seger - Kenessaw GA, US
John B. Dart - Nashotah WI, US

International Classification:

G05B 19/418
G06N 99/00
G06F 21/62
G06F 21/55
G06F 21/86

Abstract:

An industrial control system hardened against malicious activity monitors highly dynamic control data to develop a dynamic thumbprint that can be evaluated to detect deviations from normal behavior of a type that suggest tampering or other attacks. Evaluation of the dynamic thumbprint may employ a set of ranges defining normal operation and reflecting known patterns of interrelationship between dynamic variables.

US Patent:

20160359825, Dec 8, 2016

Filed:

Jun 2, 2015

Appl. No.:

14/728255

Inventors:

- Mayfield OH, US
David A. Vasko - Hartland WI, US
Timothy Patrick Boppre - Jackson WI, US
David A. Snyder - Waukesha WI, US
Alex Laurence Nicoll - Brookfield WI, US
Brian J. McMullen - Cedarburg WI, US
Daniel B. Seger - Kenessaw GA, US
John B. Dart - Nashotah WI, US

International Classification:

H04L 29/06

Abstract:

An industrial controller resistant to malicious attacks may provide a graduated response employing the elements of the control system to reduce access to the control system, log data, and announce intrusion based on a dynamically evolving assessment of the severity of any detected security issues.