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David W Proefke

from Lake Orion, MI
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Also known as:
David T Proefke, David Wilbert Proefke
Phone and address:
3051 Cedar Key Ct, Lake Orion, MI 48360
(248) 391-7895
Connected to:
Lorayne G Proefke, 82Elizabeth Proefriedt, 92William Proefriedt, 37Dean A Proefrock, 61Duane L Proefrock, 72Donald Proehl, 62Erik D Proehl, 50Gerald D Proehl, 77Keith N Proehl, 47Klaus A Proehl, 82

David Proefke Phones & Addresses

  • 3051 Cedar Key Ct, Orion Township, MI 48360 (248) 391-7895
  • Lake Orion, MI
  • 28616 Hales St, Madison Heights, MI 48071 (248) 399-1325
  • 28618 Hales St, Madison Hts, MI 48071 (248) 399-1325
  • 3051 Cedar Key Dr, Lake Orion, MI 48360 (248) 842-5431

Work

Company: General motors Position: Technical fellow

Education

Degree: MS School / High School: Stanford University 1991 to 1992 Specialities: EE

Emails

d***[email protected]

Industries

Transportation/Trucking/Railroad

Resumes

Resumes

David Proefke Photo 1

Technical Fellow At General Motors

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Position:
Technical Fellow at General Motors
Location:
Greater Detroit Area
Industry:
Transportation/Trucking/Railroad
Work:
General Motors
Technical Fellow
Education:
Stanford University 1991 - 1992
MS, EE Kettering University 1986 - 1991
BS, EE

Publications

Us Patents

Smart Card With Card In Vehicle Warning

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US Patent:
6386447, May 14, 2002
Filed:
Oct 3, 2000
Appl. No.:
09/678684
Inventors:
David T. Proefke - Madison Heights MI
Thomas E. Utter - Royal Oak MI
Robert C. Baillargeon - Utica MI
Thomas W. Pfeffer - Rochester MI
Jeffrey R. Coil - Milford MI
Andrew C. Brenz - Lake Orion MI
Kenneth P. Orlando - Sterling Hghts MI
Tejas B. Desai - Sterling Hghts MI
Christian O. Johnson - Rochester Hills MI
Ronald J. Plichta - Rochester Hills MI
Assignee:
Siemens Automotive Corporation - Auburn Hills MI
International Classification:
G06K 500
US Classification:
235380, 235376, 235382, 235476, 235492, 705417, 705418
Abstract:
A so-called âsmart cardâ system is provided with controls which ensure that a request for change in status of a vehicle is not inconsistent with the presence or lack thereof of an appropriate card in the vehicle. As an example, prior to stopping ignition upon the request for stopping ignition, a sensor will look for the presence of a valid card within the vehicle cab. If no valid card is identified, then a warning signal is sent to the operator that no card is within the cab. This will prevent the operator from stopping the vehicle in the event that any appropriate cards have left the vehicle. The operator will thus be saved the inconvenience of having to walk to a location to get another card. In another example, should the request be for locking of the vehicle driver door, the presence of a valid card within the vehicle would be made known to the operator. In this way, the operator will be less likely to lock the card within the vehicle.

Apparatus And Method For Sensing Positions Of An Ignition Switch

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US Patent:
6479908, Nov 12, 2002
Filed:
Apr 20, 2000
Appl. No.:
09/552774
Inventors:
Thomas E. Utter - Royal Oak MI
Carol L. Daprai - Lake Orion MI
Kerfegar K. Katrak - Fenton MI
David T. Proefke - Madison Heights MI
Thomas M. Forest - Macomb MI
Michael J. Kachman - Ray Township MI
Assignee:
General Motors Corporation - Detroit MI
International Classification:
B60R 2504
US Classification:
307 103, 307 106
Abstract:
An ignition switch sensor having a plurality of contacts arranged on a sensor to make intermittent contact with a movable contact and generate a first plurality of outputs corresponding to the position of the movable contact relative to the plurality of contacts. A power mode module receives the first plurality of outputs and compares the outputs to data stored within the memory of the module and provides a second plurality outputs according to the value of the first plurality of outputs. A theft resistor may be integrated into the ignition switch sensor circuitry to facilitate protection from tampering and unauthorized starting of the vehicles engine.

Electronic Key System Including Ignition And Transmission Control

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US Patent:
6653747, Nov 25, 2003
Filed:
Oct 3, 2000
Appl. No.:
09/678033
Inventors:
David T. Proefke - Madison Heights MI
Thomas E. Utter - Royal Oak MI
Robert C. Baillargeon - Utica MI
Thomas W. Pfeffer - Rochester MI
Jeffrey R. Coil - Milford MI
Andrew C. Brenz - Lake Orion MI
Kenneth P. Orlando - Sterling Hghts MI
Tejas B. Desai - Sterling Hghts MI
Christian O. Johnson - Rochester Hills MI
Ronald J. Plichta - Rochester Hills MI
Assignee:
Siemens VDO Automotive Corporation - Auburn Hills MI
International Classification:
B60R 2504
US Classification:
307 106
Abstract:
A vehicle access system that includes an electronic key ensures that the vehicle transmission is in a proper condition before power to the selected vehicle components is turned off. A control panel within the vehicle allows a driver to activate a switch indicating a desire to turn off the vehicle engine. A controller first determines whether a valid authentication code is received from a passive signaling device. Once validation is complete, the controller turns off the engine. Next, the controller determines that the vehicle is in the appropriate gear. If the transmission must be switched to the appropriate gear, the controller provides an indication to the driver that the transmission must be switched before the power to the accessory components will be turned off.

Vehicle Theft Detection Device And Method

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US Patent:
6950011, Sep 27, 2005
Filed:
Feb 18, 2003
Appl. No.:
10/368175
Inventors:
Thomas E. Utter - Royal Oak MI, US
David T. Proefke - Madison Heights MI, US
Assignee:
General Motors Corporation - Detroit MI
International Classification:
B60Q001/00
US Classification:
3404255, 3404261, 340438, 307 91
Abstract:
A vehicle-motion based vehicle theft detection device uses preexisting vehicle motion sensors in combination with an engine immobilizer system to detect and deter potential vehicle theft. Depending on whether or not a valid ignition key is in use, the engine immobilizer system sends signals to an electronic module to enter either a “disarmed” or “armed” state. When a vehicle sensor relays a signal to an electronic module, the electronic module determines, based on this signal, if the vehicle is in motion. If a valid key is in use, the electronic module is in a disarmed state and takes no further action, as the motor vehicle is authorized for motion. If, however, a valid key is not in use, the electronic module is in an armed state, and activates the vehicle alarm system which, in turn, may activate an audible or visual alarm, activate a remote notification device, generate a tracking signal, and/or store evidence of unauthorized vehicle motion in memory.

Motor Vehicle Engine Immobilizer Security System And Method

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US Patent:
7034654, Apr 25, 2006
Filed:
Jan 13, 2004
Appl. No.:
10/756729
Inventors:
Thomas M. Forest - Macomb Township MI, US
David T. Proefke - Madison Heights MI, US
Axel Nix - Birmingham MI, US
Assignee:
General Motors Corporation - Detroit MI
International Classification:
H04Q 9/00
B60R 25/00
G06F 7/58
H01H 47/00
US Classification:
340 526, 340 531, 340 572, 34042611, 708250, 708252, 307 107
Abstract:
Methods and apparatus are provided for insuring that a motor vehicle is being operated by an authorized operator. The apparatus includes an electronic control unit (ECU), an engine immobilizer unit, and a shared encryption key. The ECU generates a challenge by combining the output of a pseudo-random number generator and the output of a somewhat random number generator and cycling the combined number through a linear feedback shift register. The ECU sends the challenge to the immobilizer unit where it is encrypted with the shared key and sent back to the ECU as a response. The ECU uses the same key to encrypt the challenge and compares the encrypted challenge to the response. If the response matches the encrypted challenge, engine operation is enabled.

Adaptive Actuation Vehicle Locking System And Method

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US Patent:
7129597, Oct 31, 2006
Filed:
Jul 22, 2003
Appl. No.:
10/624738
Inventors:
David T. Proefke - Madison Heights MI, US
Thomas E. Utter - Royal Oak MI, US
Robert C. Baillargeon - Armada MI, US
Assignee:
General Motor Corporation - Detroit MI
International Classification:
B60L 1/00
US Classification:
307 101, 180289, 701 49
Abstract:
Methods and system are provided for an adaptive vehicle locking system. The system includes a plurality of vehicle door locks, each configured to lock and unlock in response to a first signal, a plurality of sensors each configured to sense opening and closing of an associated vehicle door and to send second signals in response to opening and closing of the associated vehicle door, and a lock requester configured to send a third signal. A control module that includes a memory for storing a history of the second signals and a timer adaptively settable in response to the history of the second signals is configured to receive the second signals from the plurality of sensors and the third signal from the lock requester. The control module is also configured to send a first signal to the plurality of vehicle door locks causing the vehicle door locks to lock in response to timing out of the timer following receipt of the third signal.

Temporary Key Invalidation For Electronic Key And Locking System

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US Patent:
7167084, Jan 23, 2007
Filed:
Feb 9, 2005
Appl. No.:
11/054570
Inventors:
David T. Proefke - Madison Heights MI, US
Thomas E. Utter - Royal Oak MI, US
Assignee:
General Motors Corporation - Detroit MI
International Classification:
B60R 25/10
US Classification:
34042618, 340430, 34042611, 34042635, 307 101, 307 103
Abstract:
Methods and apparatus are provided for rendering electronic keys left behind in a vehicle temporarily inactive. The apparatus comprises a vehicle security control module in wireless communication with the electronic keys, and having operatively coupled together a receiver, a processor, non-volatile memory and a short-range transmitter. When the module receives a valid lock command from any source it sends a short-range interrogation signal to keys within the vehicle. Left-behind keys respond and send their unique ID(s) to the module's receiver. The processor obtains the unique ID(s) from the receiver and sets one or more inhibit flags in memory or equivalent to identify those keys as left-behind keys. The processor thereafter ignores commands from such left-behind keys, thereby rendering them temporarily inoperative until a valid unlock command is received form another source, whereupon the processor clears the inhibit flags from memory and restores the left-behind keys to active status.

Method For Determination Of Pre-Authorization Engine Operation Time For A Vehicle Theft Deterrent System

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US Patent:
7222006, May 22, 2007
Filed:
Jan 13, 2004
Appl. No.:
10/755949
Inventors:
David T. Proefke - Madison Heights MI, US
Thomas M. Forest - Macomb Township MI, US
Thomas W. Pfeffer - Messel, DE
Assignee:
General Motors Corporation - Detroit MI
International Classification:
G06F 7/00
US Classification:
701 32, 701 31, 701 33, 307 103, 307 105, 34042611
Abstract:
Methods and apparatus are provided for determining the duration a motor vehicle engine may operate while operator authorization is verified in response to an ignition request. In one embodiment the method includes the steps of decrementing a pre-authorization timer from a first predetermined time limit and a maximum authorization timer from a second predetermined time limit in response to the ignition request. Also upon receipt of the ignition request an authorization process is initiated. Decrementing of the pre-authorization timer is halted in response to active operation of the starter motor of the motor vehicle, and operation of the motor vehicle is inhibited if either the pre-authorization timer or the maximum authorization timer decrements to zero before completion of the authorization operation.
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David W Proefke from Lake Orion, MI Get Report