Keith A Cox

US Patent:

7529948, May 5, 2009

Filed:

Aug 25, 2005

Appl. No.:

11/212974

Inventors:

David G. Conroy - El Granada CA, US
Keith Alan Cox - Campbell CA, US
Michael Culbert - Monte Sereno CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

G06F 1/00

US Classification:

713300, 713310, 713320, 713322, 713323, 713324, 713340

Abstract:

Methods and apparatuses for dynamically budgeting power usage in a data processing system. In one aspect, a data processing system, includes: one or more components including a first component; and a computing element, such as a microprocessor or a microcontroller, coupled to the first component to obtain one or more operating signals from the first component and to determine, based at least in part on the one or more operating signals, an estimate of a power consumption requirement of the one or more components for operating under the current condition. In one example, one or more sensors are used to determine information on actual power usage for a past period of time. A performance level setting of a second component, such as a CPU, a GPU, or a bus, is determined using the estimate and the information on the actual power usage, such as the operating voltage and frequency.

US Patent:

7562234, Jul 14, 2009

Filed:

Aug 25, 2005

Appl. No.:

11/212970

Inventors:

David G. Conroy - El Granada CA, US
Keith Alan Cox - Campbell CA, US
Michael Culbert - Monte Sereno CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

G06F 1/00

US Classification:

713300, 713322, 713323, 713324, 713340

Abstract:

Methods and apparatuses for dynamically budgeting power usage in a data processing system. In one aspect, a data processing system, includes: one or more first components capable of being dynamically throttled to a plurality of different performance level settings; one or more second components; and one or more power usage sensors. The one or more power usage sensors are to determine information on power usage during a first time period of operation of the data processing system. The one or more first components and the one or more second components may include a computing element to determine one of the performance level settings of the one or more first components of the data processing system for a second time period subsequent to the first time period using the information on the power usage during the first time period.

US Patent:

7788516, Aug 31, 2010

Filed:

Jan 5, 2006

Appl. No.:

11/327238

Inventors:

David G. Conroy - El Granada CA, US
Michael Culbert - Monte Sereno CA, US
Keith A. Cox - Campbell CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

G06F 11/30

US Classification:

713340, 713300

Abstract:

Exemplary embodiments of methods and apparatuses to manage a power of a system that leverage intermediate power margins are described. One or more subsystems of the system are operated at one or more performance points. A power consumed by the one or more subsystems at each of the one or more performance points is measured. An operational power of the one or more subsystems at the one or more performance points is determined. The one or more subsystems are operated at well-known conditions at the one or more performance points. The operational power may be adjusted based on data associated with the one or more subsystems. The operational power is provided to a power lookup table. The power is distributed among the one or more subsystems based on the operational power.

US Patent:

7802120, Sep 21, 2010

Filed:

Jan 5, 2006

Appl. No.:

11/327275

Inventors:

David G. Conroy - El Granada CA, US
Michael Culbert - Monte Sereno CA, US
Keith A. Cox - Campbell CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

G06F 11/30

US Classification:

713340, 713300

Abstract:

Exemplary embodiments of methods and apparatuses to dynamically redistribute power in a system that includes a plurality of subsystems are described. A load profile of the system is identified. The power is redistributed between the subsystems while tracking the load profile. The load profile may be an asymmetric, or a balanced load profile. The load profile is identified based on a utilization factor for each of the subsystems. In one embodiment, the power used by each of the subsystems is sensed by one or more sensors or predicted or estimated. A utilization factor, which may be a ratio of the actual power used by the subsystem to the power allocated to the subsystem, is calculated. The load profile is determined using the utilization factor of each of the subsystems. A power weighting arrangement between the subsystems, for example, a power distribution table, is selected based on the load profile.

US Patent:

8182139, May 22, 2012

Filed:

May 30, 2008

Appl. No.:

12/130650

Inventors:

Hugo Fiennes - Palo Alto CA, US
Keith Alan Cox - Campbell CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

G01K 15/00
G01K 7/16

US Classification:

374 1, 374185, 374170, 702130, 702 99

Abstract:

Temperature sensing circuitry is used for thermal management of an electronic device. The temperature sensing circuitry includes at least one thermistor placed at or near a component of the electronic device. The temperature sensing circuitry also includes a high-precision resistor for calibration purposes. The resistance of the resistor is equivalent to the resistance of the thermistor at a reference temperature. A calibration reading is obtained using a set current that is being passed through the resistor. An error present in the temperature sensing circuitry is determined based on the calibration reading and a design value. A temperature measurement associated with the component is then made using the thermistor, while the set current is being passed through the thermistor. The error is corrected in the temperature measurement of the component. Other embodiments are also described.

US Patent:

8307224, Nov 6, 2012

Filed:

Sep 13, 2010

Appl. No.:

12/880990

Inventors:

David G. Conroy - El Granada CA, US
Michael Culbert - Monte Sereno CA, US
Keith A. Cox - Campbell CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

G06F 1/26

US Classification:

713300, 713323

Abstract:

Exemplary embodiments of methods and apparatuses to dynamically redistribute power in a system that includes a plurality of subsystems are described. A load profile of the system is identified. The power is redistributed between the subsystems while tracking the load profile. The load profile may be an asymmetric, or a balanced load profile. The load profile is identified based on a utilization factor for each of the subsystems. In one embodiment, the power used by each of the subsystems is sensed by one or more sensors or predicted or estimated. A utilization factor, which may be a ratio of the actual power used by the subsystem to the power allocated to the subsystem, is calculated. The load profile is determined using the utilization factor of each of the subsystems. A power weighting arrangement between the subsystems, for example, a power distribution table, is selected based on the load profile.

US Patent:

8332665, Dec 11, 2012

Filed:

Jul 10, 2009

Appl. No.:

12/500997

Inventors:

David G. Conroy - El Granada CA, US
Keith Alan Cox - Campbell CA, US
Michael Culbert - Monte Sereno CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

G06F 1/00

US Classification:

713300, 713320, 713321, 713322, 713323, 713324, 713340

Abstract:

Methods and apparatuses for dynamically budgeting power usage in a data processing system. In one aspect, a data processing system, includes: one or more first components capable of being dynamically throttled to a plurality of different performance level settings; one or more second components; and one or more power usage sensors. The one or more power usage sensors are to determine information on power usage during a first time period of operation of the data processing system. The one or more first components and the one or more second components may include a computing element to determine one of the performance level settings of the one or more first components of the data processing system for a second time period subsequent to the first time period using the information on the power usage during the first time period.

US Patent:

8332679, Dec 11, 2012

Filed:

Aug 30, 2010

Appl. No.:

12/871803

Inventors:

David G. Conroy - El Granada CA, US
Michael Culbert - Monte Sereno CA, US
Keith A. Cox - Campbell CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

G06F 11/30

US Classification:

713340, 713324

Abstract:

Exemplary embodiments of methods and apparatuses to manage a power of a system that leverage intermediate power margins are described. One or more subsystems of the system are operated at one or more performance points. A power consumed by the one or more subsystems at each of the one or more performance points is measured. An operational power of the one or more subsystems at the one or more performance points is determined. The one or more subsystems are operated at well-known conditions at the one or more performance points. The operational power may be adjusted based on data associated with the one or more subsystems. The operational power is provided to a power lookup table. The power is distributed among the one or more subsystems based on the operational power.

Address:

100 N Kilkea Dr, Los Angeles, CA 90048

Phone:

3234975664

VIN:

YS3GN4AR4B4001659

Make:

SAAB

Model:

9-5

Year:

2011