Richard H Harper

US Patent:

D483689, Dec 16, 2003

Filed:

Oct 16, 2002

Appl. No.:

29/169218

Inventors:

Richard J. Harper - Flushing NY 11358

International Classification:

1102

US Classification:

D11133

US Patent:

7282873, Oct 16, 2007

Filed:

Nov 16, 2004

Appl. No.:

10/989866

Inventors:

Bulent Abali - Tenafly NJ, US
D. Scott Guthridge - New York NY, US
Richard E. Harper - Chapel Hill NC, US
Peter A. Manson - Cary NC, US

Assignee:

Lenovo (Singapore) Pte. Ltd. - Singapore

International Classification:

H02P 5/00

US Classification:

318 41, 318 49, 318268, 417 2, 417 42

Abstract:

A multi-fan apparatus and method incorporates mutual active cancellation of fan noise and/or vibrations. The multi-fan apparatus includes two or more fans circuits, each comprising a fan, a fan speed controller and a separate tachometer, and a fan phase controller. The phase controller is connected to at least one fan speed controller and to each tachometer. Each fan's speed is independently and dynamically maintained at the same set speed by the fan speed controllers using an independent control loops. A noise and/or vibration cancellation phase difference between fans is determined in order to achieve destructive interference of pressure waves and, thus, noise and/or vibration reduction, in pre-determined region of a system incorporating the multi-fan apparatus. The phase controller establishes and maintains this cancellation phase difference between the fans based upon feedback from the tachometers.

US Patent:

20130262915, Oct 3, 2013

Filed:

Mar 30, 2012

Appl. No.:

13/435121

Inventors:

David C. FRANK - Ossining NY, US
Richard E. Harper - Chapel Hill NC, US
Jeffrey Lucash - Hurley NY, US
Kyung D. Ryu - New City NY, US
Ravi A. Shankar - Austin TX, US
Thomas Weaver - Dripping Springs TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 11/16

US Classification:

714 411, 714E11054

Abstract:

An aspect of this invention is a method that includes evaluating a computing environment by performing auditing of a fault tolerance ability of the computing environment to tolerate each of a plurality of failure scenarios; constructing a failover plan for each of the plurality of scenarios; identifying one or more physical resource limitations which constrain the fault tolerance ability; and identifying one or more physical resources to be added to the computing environment to tolerate each of the plurality of failure scenarios.

US Patent:

20130332771, Dec 12, 2013

Filed:

Jun 11, 2012

Appl. No.:

13/493304

Inventors:

Valentina Salapura - Chappaqua NY, US
Richard E. Harper - Chapel Hill NC, US
Kyung D. Ryu - New City NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 11/14

US Classification:

714 15, 714E11117

Abstract:

Methods and apparatus for recovery of virtual machine failure. A succession of data images is captured, with each of the data images comprising an operating system of the virtual machine. The data images are images of data elements chosen based at least in part on their suitability for virtual machine restoration. Upon detection of a virtual machine failure, an attempt is made to restore the virtual machine using the highest ranked. If the attempt fails, further attempts are made using lower ranked data images, until an attempt is successful or all available data images have been used.