Patents by Inventor Terry J. Haggerty

Terry J. Haggerty 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).

  • Method for EEPROM write protection using threshold voltage projection
    Patent number: 5274827
    Abstract: Writing to an EEPROM when the regulated supply voltage to the EEPROM is below a minimum voltage required for proper operation is prevented by determining the battery voltage threshold which corresponds to the minimum required supply voltage, measuring the battery voltage and the rate of change of voltage and projecting the voltage to the end of the write cycle. When the projected battery voltage is below the threshold the write cycle is canceled. The write cycle is also canceled when the battery voltage is below the normal operating range when a write cycle is requested.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: December 28, 1993
    Assignee: Delco Electronics Corporation
    Inventors: Terry J. Haggerty, Curtis R. Balka, Ronald H. Jaeger