Michael J Robillard

US Patent:

7298167, Nov 20, 2007

Filed:

Jun 24, 2005

Appl. No.:

11/166822

Inventors:

Timothy Dorr - North Attleboro MA, US
Michael N. Robillard - Shrewsbury MA, US
Louise Schwabe - Sterling MA, US

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G01R 31/36
G01R 31/26
G01R 31/00
G01R 19/00

US Classification:

324771, 324767, 324522, 702 58, 702 64

Abstract:

A system for detecting a fault in a power supply having at least one power supply unit and a redundant power supply unit. The system includes a printed circuit board and a common voltage bus disposed on the printed circuit board. A plurality of diodes is disposed on the printed circuit board having first electrodes connected to the common voltage supply bus. The diodes have second electrodes connected to a corresponding one of the at least one power supply unit and the redundant power supply unit. The diodes are connected to the common bus in a logic OR configuration. A controller, disposed on the printed circuit board, is fed by a voltage at the second electrode of a corresponding one of the diodes and a reference voltage for determining whether the voltage at the second electrode of the corresponding one of the diodes is producing a predetermined voltage relative to the reference voltage.

US Patent:

8589729, Nov 19, 2013

Filed:

Sep 28, 2007

Appl. No.:

11/864094

Inventors:

Jason Pritchard - Hopkinton MA, US
Himanshu Agrawal - Cambridge MA, US
Michael Robillard - Shrewsbury MA, US
Robert Beauchamp - Milford MA, US

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G06F 11/00

US Classification:

714 14

Abstract:

A data preservation device includes a circuit board configured to be positioned within a memory module slot of a computing device and releasably engage a memory bus of the computing device. A non-volatile memory storage device is electrically coupled to the circuit board. A control circuit is electrically coupled to the circuit board and is configured to read a data portion from the computing device and write the data portion to the non-volatile memory storage device during the occurrence of a power failure event on the computing device. An independent power supply is configured to power the data preservation device during the power failure event.

US Patent:

58092200, Sep 15, 1998

Filed:

Jul 20, 1995

Appl. No.:

8/504941

Inventors:

Brian D. Morrison - Hopkinton MA
Creig E. Wienke - Holliston MA
Martin R. Batten - North Grafton MA
Michael N. Robillard - Shrewsbury MA

Assignee:

Raytheon Company - Lexington MA

International Classification:

G06F 1100

US Classification:

3951821

Abstract:

A fault tolerant distributed intelligence control system for sensing and control across fault tolerant fiber optic communication media interconnecting a plurality of intelligent nodes. Each intelligent node comprises a digital control and communication processor (DCCP) operating autonomously in relation to DCCPs at other nodes, and a transceiver for interfacing with the communication media. The fiber optic communication media comprises bi-directional serial data buses. The combination provides a low cost highly reliable distributed control system particularly applicable to primary and secondary aircraft control systems, as well as to other vehicle and control systems.

US Patent:

57969353, Aug 18, 1998

Filed:

Jul 20, 1995

Appl. No.:

8/504942

Inventors:

Brian D. Morrison - Hopkinton MA
Martin R. Batten - North Grafton MA
Michael N. Robillard - Shrewsbury MA
Creig E. Wienke - Holliston MA

Assignee:

Raytheon Company - Lexington MA

International Classification:

G06F 1118

US Classification:

39518209

Abstract:

An intelligent voting node for a multiple node, fault tolerant, distributed intelligence control system having a plurality of optically isolated relays for connecting a power source to a load device and providing total optical isolation for processors of the voting node from faults occurring in the power source. The voting node includes triple redundant two-out-of-three voters each coupled to one of three redundant digital communication and control processors within the node. Built-in-self-test capability using optically isolated receiver devices provides for avoidance of latent failures.