Christopher L Wood

US Patent:

7353410, Apr 1, 2008

Filed:

Jan 11, 2005

Appl. No.:

11/032877

Inventors:

Dhruv Manmohandas Desai - Cary NC, US
Nickolas J. Gruendler - Raleigh NC, US
Carl A. Morrell - Cary NC, US
Gary R. Shippy - Cary NC, US
Michael Leo Scollard - Raleigh NC, US
Michael Joseph Steinmetz - Cary NC, US
Malcolm Scott Ware - Austin TX, US
Christopher L. Wood - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1/26

US Classification:

713300, 702 60, 702 70, 713340

Abstract:

A method and system and calibration technique for power measurement and management over multiple time frames provides responsive power control while meeting global system power consumption and power dissipation limits. Power output of one or more system power supplies is measured and processed to produce power values over multiple differing time frames. The measurements from the differing time frames are used to determine whether or not system power consumption should be adjusted and then one or more devices is power-managed in response to the determination. The determination may compare a set of maximum and/or minimum thresholds to each of the measurements from the differing time frames. A calibration technique uses a precision reference resistor and voltage reference controlled current source to introduce a voltage drop from the input side of a power supply sense resistor calibration is made at the common mode voltage of the power supply output.

US Patent:

7536577, May 19, 2009

Filed:

Aug 22, 2007

Appl. No.:

11/843104

Inventors:

Dhruv Manmohandas Desai - Cary NC, US
Nickolas J. Gruendler - Raleigh NC, US
Carl A. Morrell - Cary NC, US
Gary R. Shippy - Cary NC, US
Michael Leo Scollard - Raleigh NC, US
Michael Joseph Steinmetz - Cary NC, US
Malcolm Scott Ware - Austin TX, US
Christopher L. Wood - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1/26

US Classification:

713340, 324142, 702 60, 702104

Abstract:

A calibration technique provides for precision calibration of system power measurement. The calibration technique uses a precision reference resistor and voltage reference controlled current source to introduce a voltage drop from the input side of a power supply sense resistor. Calibration measurements are thereby made for voltages substantially equal to the voltage of the power supply output, so that differential measurements are made at substantially the same common-mode voltage by appropriate selection of the relationship of the resistance of the precision reference resistor and the resistance of the sense resistor, where the common-mode voltage of the measurement is substantially equal to the power supply output voltage.

US Patent:

7792597, Sep 7, 2010

Filed:

Jun 28, 2007

Appl. No.:

11/769832

Inventors:

Thomas M. Brey - Cary NC, US
Wesley Michael Felter - Austin TX, US
Sumeet Kochar - Apex NC, US
Charles Robert Lefurgy - San Marcos TX, US
Malcolm Scott Ware - Austin TX, US
Christopher Landon Wood - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G05B 13/02

US Classification:

700 34, 700299, 700300, 713322

Abstract:

In one embodiment, a control system supports an unlimited number of feedback control loops all sharing control of a component. A component performance rate or “speed” is used as a common metric for negotiating control of the component. Each control loop continuously monitors a system parameter it is tasked with regulating, compares it to a setpoint for that system parameter, and “requests” a speed in relation to the deviation of the associated system parameter from the corresponding setpoint. A controller receives the requested speeds as dynamic inputs and selects one of the requested speeds according to predefined selection logic. The controller communicates the selected speed to an actuator, which causes the component to operate at the selected speed. In this manner, the control system in effect negotiates control of the component in a way that ensures that all of the system parameters are being managed within safe limits.

US Patent:

7873855, Jan 18, 2011

Filed:

Dec 21, 2007

Appl. No.:

11/962381

Inventors:

Dhruv Manmohandas Desai - Cary NC, US
Nickolas J. Gruendler - Raleigh NC, US
Carl A. Morrell - Cary NC, US
Gary R. Shippy - Cary NC, US
Michael Leo Scollard - Raleigh NC, US
Michael Joseph Steinmetz - Cary NC, US
Malcolm Scott Ware - Austin TX, US
Christopher L. Wood - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1/26

US Classification:

713340, 702 61

Abstract:

A method and system and calibration technique for power measurement and management over multiple time frames provides responsive power control while meeting global system power consumption and power dissipation limits. Power output of one or more system power supplies is measured and processed to produce power values over multiple differing time frames. The measurements from the differing time frames are used to determine whether or not system power consumption should be adjusted and then one or more devices is power-managed in response to the determination. The determination may compare a set of maximum and/or minimum thresholds to each of the measurements from the differing time frames. A calibration technique uses a precision reference resistor and voltage reference controlled current source to introduce a voltage drop from the input side of a power supply sense resistor calibration is made at the common mode voltage of the power supply output.

US Patent:

8560807, Oct 15, 2013

Filed:

Dec 14, 2011

Appl. No.:

13/325432

Inventors:

Alfredo Aldereguia - Cary NC, US
James J. Parsonese - Cary NC, US
Grace A. Richter - Raleigh NC, US
Christopher L. Wood - Greenville NC, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 12/00

US Classification:

711217

Abstract:

Methods, apparatuses, and computer program products for accessing a logic device through a serial interface are provided. Embodiments include receiving, by the serial interface of the logic device, a first data access request indicating a non-linear address mode, wherein the first data access request includes: a non-linear address corresponding to a non-linear index specifying a plurality of non-linear addresses, the non-linear index associating each non-linear address with one of the plurality of registers; a data count indicating an amount of data to be accessed in the first data access request; and a page offset value indicating within a register, a starting page to perform the first data access request. Embodiments also include identifying in the non-linear address mode a location within the logic device based on the non-linear address and the starting page; and performing at the identified location, by the logic device, a serial transaction in accordance with the first data access request.

US Patent:

20130220423, Aug 29, 2013

Filed:

Feb 23, 2012

Appl. No.:

13/403094

Inventors:

Keith M. Campbell - Cary NC, US
Vinod Kamath - Raleigh NC, US
Christopher L. Wood - Greenville NC, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - ARMONK NY

International Classification:

F17D 3/00

US Classification:

137 1

Abstract:

Methods, apparatuses, and computer program products for responding to moisture at one or more zones around an outer surface of a liquid-carrying pipe are provided. Embodiments include monitoring, by a moisture correction controller, a plurality of moisture sensors, each moisture sensor configured to detect moisture at a separate zone around the outer surface of the liquid-carrying pipe; based on the monitoring of the plurality of moisture sensors, calculating and tracking, for each zone, a level of moisture detected by a moisture sensor; based on the tracked levels of moisture detected at the zones, selecting, between condensation or a leak from within the liquid-carrying pipe as a source of the moisture detected at the zones around the liquid-carrying pipe; and administering a corrective action based on the selection of the source of the moisture detected at the zones around the liquid-carrying pipe.

US Patent:

20230086432, Mar 23, 2023

Filed:

Sep 23, 2021

Appl. No.:

17/482769

Inventors:

- Armonk NY, US
Harris M. MORGENSTERN - Wappingers Falls NY, US
Charles Eugene MARI - Wappingers Falls NY, US
Christopher Lee WOOD - Hyde Park NY, US
Alfred Francis FOSTER - Wappingers Falls NY, US

International Classification:

G06F 11/36
G06F 3/06

Abstract:

A transient input/output in progress state is established during processing of an input/output testcase by a test infrastructure in a computing environment. The method includes obtaining the input/output testcase for an object having one or more pages, and processing the input/output testcase by the test infrastructure. Processing the input/output testcase by the test infrastructure includes, for a page of the object, generating a delay in the processing of the input/output testcase for the page of the object. The delay opens a transient input/output in progress state during which one or more concurrent test operations are to reference the page of the object.

US Patent:

20230004679, Jan 5, 2023

Filed:

Jun 30, 2021

Appl. No.:

17/363427

Inventors:

- MORRISVILLE NC, US
KEITH M. CAMPBELL - CARY NC, US
ERIC PETTERSEN - RALEIGH NC, US
CLIFTON E. KERR - MORRISVILLE NC, US
CHRISTOPHER L. WOOD - CHAPEL HILL NC, US
STEVEN L. VANDERLINDEN - HILLSBOROUGH NC, US

International Classification:

G06F 21/70

Abstract:

Component access control includes: receiving, by an access control module, permissions specifying authorization of physical access to one or more secured components of a computing system by one or more requestors; receiving, by the access control module from a requestor, a request to physically access one of the secured components of the computing system; determining, by the access control module based on the permissions, whether the requestor is authorized to physically access the secured component; and responsive to determining that the requestor is authorized to physically access the secured component, granting the requestor physical access to the secured component while prohibiting the requestor from physically accessing other secured components of the computing system.