Patents by Inventor Mark R. Keyse

Mark R. Keyse has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8643333
    Abstract: A battery monitor system for determining a cell voltage between a low side contact and a high side contact of a cell in situ as one of a plurality of cells connected in series to form a battery. The system uses an arrangement of switches and capacitors to shift relatively high absolute voltages of a battery stack to a relative low voltage level so lower voltage electronics can be used to monitor cell voltages. The system may be configured to provide a single ended measurement or a differential measurement indicative of a cell voltage. The differential measurement may be advantageous to correct or offset signal noise caused by electromagnetic interference (EMI).
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: February 4, 2014
    Assignee: Delphi Technologies, Inc.
    Inventors: Seyed R. Zarabadi, Thomas Gerard Block, Mark R. Keyse
  • Publication number: 20130049761
    Abstract: A battery monitor system for determining a cell voltage between a low side contact and a high side contact of a cell in situ as one of a plurality of cells connected in series to form a battery. The system uses an arrangement of switches and capacitors to shift relatively high absolute voltages of a battery stack to a relative low voltage level so lower voltage electronics can be used to monitor cell voltages. The system may be configured to provide a single ended measurement or a differential measurement indicative of a cell voltage. The differential measurement may be advantageous to correct or offset signal noise caused by electromagnetic interference (EMI).
    Type: Application
    Filed: August 31, 2011
    Publication date: February 28, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: SEYED R. ZARABADI, THOMAS GERARD BLOCK, MARK R. KEYSE
  • Publication number: 20110015804
    Abstract: A system and method are provided for communicating data synchronously with a plurality of crash sensors onboard a vehicle. The system includes a control unit comprising interface circuitry for communicating with a plurality of crash sensors and providing synchronization signals to the crash sensors. The system also includes a communication bus coupled to the control unit for communicating with the crash sensors. The system further includes a plurality of crash sensors connected to the communication bus for communicating with the control unit. Each of the plurality of crash sensors receives one or more synchronization signals and is capable of transmitting data in response to the synchronous signals. The plurality of crash sensors each comprises logic for comparing a sensed parameter to a threshold and transmitting data when the sensed parameter exceeds the threshold.
    Type: Application
    Filed: July 17, 2009
    Publication date: January 20, 2011
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Charles A. Cluff, Robert H. Obremski, Mark R. Keyse
  • Patent number: 6937083
    Abstract: Analog signal conditioning circuitry is provided for processing an analog signal generated by a sensor to remove DC offset. The signal conditioning circuitry includes an amplifier having the first input receiving an analog input signal and a second input receiving a reference signal. The amplifier includes an output providing an analog output signal defined by an amplified representation of the analog input signal and the reference signal. The circuitry includes a feedback circuit having an input coupled to the amplifier output and an output coupled to the first input of the amplifier for providing an analog feedback signal. The feedback circuit includes an analog-to-digital converter for converting the analog amplifier output to a digital signal, a digital controller for processing the digital signal, and a digital to analog converter for converting the processed digital signal to an analog feedback signal.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: August 30, 2005
    Assignee: Delphi Technologies, Inc.
    Inventors: Gregory J. Manlove, Mark R. Keyse
  • Patent number: 6806756
    Abstract: Analog signal conditioning circuitry is provided for processing an analog signal generated by a sensor to remove DC offset. The signal conditioning circuitry includes an amplifier having the first input receiving an analog input signal and a second input receiving a reference signal. The amplifier includes an output providing an analog output signal defined by an amplified representation of the analog input signal and the reference signal. The circuitry includes a feedback circuit having an input coupled to the amplifier output and an output coupled to the first input of the amplifier for providing an analog feedback signal. The feedback circuit includes an analog-to-digital converter for converting the analog amplifier output to a digital signal, a digital controller for processing the digital signal, and a digital to analog converter for converting the processed digital signal to an analog feedback signal.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: October 19, 2004
    Assignee: Delphi Technologies, Inc.
    Inventors: Gregory J. Manlove, Mark R. Keyse
  • Patent number: 5493214
    Abstract: In accordance with the teachings of the present invention, a fault detection circuit is provided which detects short circuits on differential leads associated with a magnetic sensor and modifies said differential voltage to avoid possible errors associated with a short circuit. The circuit includes a first and second input coupled to first and second signal lines for receiving a differential voltage. A first voltage comparator compares voltage potentials at the first and second signal lines so as to detect equal voltage crossings and provide an output in response thereto. A rectifier is coupled to the first and second signal lines in the output of the first comparator and has first and second outputs for producing positive half-wave voltage cycles with a voltage potential at each of the first and second lead lines. A second comparator is provided for comparing the half-wave voltage cycles with a first threshold voltage that represents a short circuit power source.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: February 20, 1996
    Assignee: Delco Electronics Corporation
    Inventors: Brian K. Good, Mark R. Keyse
  • Patent number: 5477142
    Abstract: In accordance with the teachings of the present invention, an adaptive threshold circuit is provided which develops a series of square-wave voltage pulses from an alternating differential voltage that is produced in response to the rotation of a wheel. The adaptive threshold circuit includes an input circuit for providing an input voltage in response to the alternating differential voltage. A first voltage comparator compares the input voltage with an adaptive analog threshold voltage and produces an output in response thereto which causes a rising edge of the square-wave voltage pulse. A second voltage comparator compares a selected portion of the input voltage with the adaptive analog threshold voltage and produces an output in response thereto. The adaptive threshold circuit further includes a binary counter having a reset input for receiving the first voltage comparator output and an enable input for receiving the second voltage comparator output and provides a plurality of binary outputs.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: December 19, 1995
    Assignee: Delco Electronics Corporation
    Inventors: Brian K. Good, Mark R. Keyse
  • Patent number: 5450008
    Abstract: An adaptive loading circuit is provided for adaptively attenuating an alternating differential voltage that is produced by a magnetic sensor in response to the rotation of a wheel while maintaining noise immunity. The circuit includes an input for receiving an input differential voltage from the magnetic sensor via first and second input lines. A resistive divider network is included which has a resistive load serially connected to each of the first and second input lines and a plurality of adaptively selectable parallel resistive loads connected between the first and second input lines. Combinations of the parallel resistive loads are adaptively selected when the input differential voltage exceeds predetermined voltage thresholds so as to divide the input differential voltage into a selected portion thereof as an output differential voltage. In addition, the parallel resistive loads may be selectively switched out when the input differential voltage drops below a low voltage threshold.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: September 12, 1995
    Assignee: Delco Electronics Corp.
    Inventors: Brian K. Good, Mark R. Keyse