Timothy J Knowlton

US Patent:

20050197755, Sep 8, 2005

Filed:

Mar 5, 2004

Appl. No.:

10/795198

Inventors:

Timothy Knowlton - Benson AZ, US
Kenneth Gay - Tucson AZ, US

International Classification:

G06F019/00

US Classification:

701050000, 701213000

Abstract:

A three-dimensional and a two-dimensional GPS unit periodically provide coordinate positions of points on the work machine and are combined with a Kalman filter to produce a point of reference on a work machine. The point of reference is improved by combining the position with an inertial position derived from accelerometer data in another Kalman filter. Additionally, the two-dimensional GPS unit provides a heading that is combined with an inertial orientation derived by the angular rate from a gyroscope in another Kalman filter to produce a precise orientation estimate. Inclinometers provide pitch and roll of the work machine. With the point of reference, orientation estimate, pitch, roll and known geometry of the work machine, the invention calculates the location and orientation of machine components and continuously tracks its movement throughout the mine. Additionally, the accelerometers and gyroscope provide position and orientation when the GPS units are inoperable.

US Patent:

20120294332, Nov 22, 2012

Filed:

May 17, 2011

Appl. No.:

13/109446

Inventors:

Morgan H. Monks - Tempe AZ, US
Kenneth W. Gay - Tucson AZ, US
Timothy J. Knowlton - Benson AZ, US

International Classification:

G01K 13/00

US Classification:

374152, 374E13001

Abstract:

Adjusting current based on temperature. A change in temperature of a connection between a first device and a second device may be measured. The change in temperature may be performed while the first device provides current to the second device over the connection. If the change in temperature is above a threshold, the current being provided from the first device to the second device may be reduced. The change in temperature may be performed by the first device and/or the second device, e.g., by measuring the temperature of a connector of the connection.

US Patent:

20120306455, Dec 6, 2012

Filed:

May 31, 2011

Appl. No.:

13/149529

Inventors:

Christopher Fischbach - Tucson AZ, US
Timothy J. Knowlton - Benson AZ, US

Assignee:

STANDARD MICROSYSTEMS CORPORATION - Hauppauge NY

International Classification:

H02J 7/04

US Classification:

320162

Abstract:

A method and system for detecting a charging current supplied to a portable device through a USB charger. The method includes the steps of connecting a charging circuit to a portable device, allowing the portable device to draw charging current from the charging circuit, measuring the current drawn from the charging circuit, comparing the measured current with a threshold value, making one or more system level decisions regarding charging of the portable device if the detected charging current is below the threshold current.

US Patent:

20120313571, Dec 13, 2012

Filed:

Jun 9, 2011

Appl. No.:

13/157282

Inventors:

Timothy J. Knowlton - Benson AZ, US

Assignee:

STANDARD MICROSYSTEMS CORPORATION - Hauppauge NY

International Classification:

H02J 7/00

US Classification:

320107

Abstract:

A charging method and system for rationing charge or energy supplied by a host to a portable device. The system includes a power switch, and a current sensing module connected to the power switch. The current sensing module detects instantaneous current drawn by the portable device. The system further includes a current register connected to the current sensing module for storing the instantaneous current value. A timing module generates timing information. The system also includes a charge register storing a cumulative charge drawn by the portable device. The cumulative charge is obtained by multiplying the instantaneous current value with the timing information. A threshold database stores a threshold value, and a rationing module connected to the host and the charge register continuously compares the cumulative charge value with the threshold charge value. When the cumulative charge value exceeds the threshold charge value, a control signal is generated.

US Patent:

20130002192, Jan 3, 2013

Filed:

Jun 30, 2011

Appl. No.:

13/173287

Inventors:

Christopher Fischbach - Tucson AZ, US
Timothy J. Knowlton - Benson AZ, US
James P. McFarland - Tucson AZ, US

Assignee:

STANDARD MICROSYSTEMS CORPORATION - Hauppauge NY

International Classification:

H02J 7/04
H02J 7/00

US Classification:

320107, 320162

Abstract:

An emulation system for charging any arbitrary portable device through a communication port on the portable device. The system includes a receptacle port for communicating with the portable device and a profile database for storing multiple charging profiles. Each charging profile including a set of parameters and at least one exit condition. Further, an emulation module applies a first charging profile to the portable device and monitors the set of parameters associated with the charging profile to identify an associated exit condition. Upon a determination that the exit condition for the first charging profile is met, the emulation module applies a next charging profile to the portable device.

US Patent:

20130063098, Mar 14, 2013

Filed:

Sep 14, 2011

Appl. No.:

13/232965

Inventors:

Timothy J. Knowlton - Benson AZ, US
Christopher Fischbach - Tucson AZ, US

Assignee:

STANDARD MICROSYSTEMS CORPORATION - HAUPPAUGE NY

International Classification:

H02J 7/00

US Classification:

320137

Abstract:

The invention is related to a method and system for temperature regulation of a power switch during charging of a portable device. The method includes the steps of establishing a connection between the portable device and a charging circuit, monitoring a charging current supplied from the charging circuit to the portable device, monitoring a temperature of the power switch, while the portable device is being charged, comparing the monitored temperature with a predefined threshold temperature, and restricting the charging current, based on the comparison.

US Patent:

20130069600, Mar 21, 2013

Filed:

Sep 15, 2011

Appl. No.:

13/233949

Inventors:

Timothy J. Knowlton - Benson AZ, US
Christopher Fischbach - Tucson AZ, US

Assignee:

STANDARD MICROSYSTEMS CORPORATION - HAUPPAUGE NY

International Classification:

H02J 7/00

US Classification:

320162, 320107

Abstract:

A method and system for optimizing the behavior of a charger connected to a portable device when the portable device current exceeds the charger current limit. The system includes a configuration module configured to set a maximum current limit and a register-based current limit values. The system further includes a port power switch configured to limit the portable device current, in the event that the portable device current exceeds the maximum current limit value. The port power switch is configures to modify the portable device current to a predetermined constant current value or reset the current to zero based on the relation between the maximum current limit and the register-based current limit value.

US Patent:

20130227307, Aug 29, 2013

Filed:

Feb 28, 2012

Appl. No.:

13/407153

Inventors:

Timothy J. Knowlton - Benson AZ, US
Miroslav Oljaca - Tucson AZ, US

International Classification:

G06F 1/26

US Classification:

713300

Abstract:

A port power switch (PPS) may be used for lead compensation in systems where power is provided to a connected device by a switch-mode power supply (SMPS). The PPS may be designed to co-operate with the SMPS, providing a mechanism for the feedback reference point of the SMPS to be automatically switched, in the event of system fault or some other condition that might result in the PPS entering an “OFF’ operating mode, from the application point of load (POL) to the voltage input pin of the PPS without loss of power path continuity. The switching mechanism and the PPS may be manufactured to reside on the same integrated circuit. The PPS may include a control block that generates a control signal to couple the feedback port of the SMPS to the POL under normal operation, and to the voltage input port of the PPS during a fault condition.