John E Owens

US Patent:

8190877, May 29, 2012

Filed:

Jul 3, 2006

Appl. No.:

11/428505

Inventors:

Sean K. O'Keeffe - Arlington VA, US
John R. Owens - Carlsbad CA, US
Richard L. Quintana - Carlsbad CA, US

Assignee:

ViaSat, Inc. - Carlsbad CA

International Classification:

H04L 29/06

US Classification:

713153, 713150, 370351, 370352, 370353, 370354, 370355, 705 79, 709238, 709239, 709240, 709241, 709242, 709243, 709244

Abstract:

A cryptographic processor for redundantly-processing cryptographic operations is disclosed. The cryptographic processor includes a number of input ports, a first and second cryptographic engines, comparison logic and a plurality of output ports. The number of input ports is configured to accept both plaintext and ciphertext. Each of the number of input ports is coupled to both the first and second cryptographic engines. The comparison logic is configured to determine if the first and second cryptographic engines produce a result that is different. The number of output ports is configured to produce both plaintext and ciphertext.

US Patent:

56421010, Jun 24, 1997

Filed:

Aug 23, 1993

Appl. No.:

8/109987

Inventors:

Gary L. Stirk - Arnold MD
John M. Jamieson - Saverna Park MD
Rob L. Cowden - Washington DC
Susan M. Prothro - West River MD
John S. Owens - West River MD
Krishna P. Mikkilineni - New Hope MN
Philip J. Zumsteg - Minneapolis MN
Kenneth P. Wacks - Stoneham MA

Assignee:

Building Technology Associates - Wilmington DE

International Classification:

G05B 2302

US Classification:

34082508

Abstract:

A controller that operates using two different processors is provided. Each processor performs certain predetermined functions. A control processor is responsible for switching AC power distribution and control, while a message processors is responsible for messaging. A polling scheme and arbitration logic prevent data transfers relating to these two processors from interfering with each other. A configurable interface allows many different types of appliances to attach to the system, and a serial multimode interface further enhances the configurability of the system.