Thomas Jeffrey Reiter

US Patent:

6861817, Mar 1, 2005

Filed:

Dec 21, 2001

Appl. No.:

10/027514

Inventors:

John M. Pigott - Phoenix AZ, US
Thomas Jeffrey Reiter - Dearborn MI, US

Assignee:

Freescale Semiconductor, Inc. - Austin TX

International Classification:

G05B019/40

US Classification:

318685, 318696, 318671, 318560

Abstract:

Stepped rotary motion is imparted to the rotor of a stepping motor by alternately driving at least first and second coils which interact with a plurality of magnetic poles on the rotor. When each of the coils transitions from a driven to a non-driven state, the continued motion of the rotor causes a back electro-motive force to be generated in the coil. The electro-motive forces produced by the coils are rectified, integrated, and then compared with a threshold to determine if a motor stall condition exists.

US Patent:

7058149, Jun 6, 2006

Filed:

Dec 14, 2001

Appl. No.:

10/017688

Inventors:

John Pigott - Phoenix AZ, US
Thomas Jeffrey Reiter - Dearborn MI, US

Assignee:

Freescale Semiconductor, Inc. - Austin TX

International Classification:

H04L 7/00

US Classification:

375354

Abstract:

A system and methods are provided for calibrating timing in a remote device to timing in a source device. The source device dictates timing signals to be generated in the remote device. A calibration routine is processed to calibrate timing in the remote device to timing in the source device. The source device provides a reference signal that dictates a period of time to the remote device. The remote device tracks a number of local clock cycles generated for the duration of the dictated period of time. The remote device then establishes a time base for translating a number of clock cycles dictated by the source device to a number of clock cycles generated within the remote device.

US Patent:

7145309, Dec 5, 2006

Filed:

Sep 14, 2004

Appl. No.:

10/940058

Inventors:

Thomas J. Reiter - Dearborn MI, US
Peter J. Pinewski - Anoka MN, US

Assignee:

Freescale Semiconductor, Inc. - Austin TX

International Classification:

H02P 8/00

US Classification:

318696, 318650, 318685, 116 281, 116 621, 116 622, 116 623

Abstract:

Provided herewith is an improved scheme for parking a load such as an indicator pointer and calibrating its position in a system for controlling the position of the load. The system also has a stopper for physically impeding the load when it is to be parked. In one embodiment, a parking method involves driving the motor in a reduced torque mode to move the load toward the stopper, stopping the load at the stopper while the motor is driven in the reduced torque mode, and maintaining the motor in a reduced torque mode until transitioning to an insignificant torque mode.

US Patent:

20150270703, Sep 24, 2015

Filed:

Mar 24, 2014

Appl. No.:

14/222925

Inventors:

Thomas J. Reiter - Dearborn MI, US
Ibrahim S. Kandah - Novi MI, US

Assignee:

FREESCALE SEMICONDUCTOR, INC. - Austin TX

International Classification:

H02H 7/18
H02H 9/00

Abstract:

A circuit is configured for providing reverse battery protection. The circuit includes a load driver circuit having at least a first half-bridge circuit with topside and bottomside transistors coupled at a midpoint node by a first current terminal of both the topside and bottomside transistors. A second current terminal of the bottomside transistor is coupled to a voltage common node. The circuit also includes: a reverse battery protection transistor having a first current terminal coupled to a battery supply node and a second current terminal coupled to a second current terminal of the topside transistor; a bootstrap capacitor having a first terminal coupled to a the midpoint node between the topside and bottomside transistors of the first half-bridge circuit; and a diode having an anode coupled to a second terminal of the bootstrap capacitor and a cathode coupled to a control terminal of the reverse battery protection transistor.