Patents Represented by Law Firm Cates, Phillips, & Holloway
  • Apparatus for method and a high precision analog-to-digital converter
    Patent number: 4939519
    Abstract: An analog-to-digital converter includes a constant current source that alternately charges and discharges the capacitor between predetermined levels. The difference between the rate of charging and the rate of discharging of the capacitor provide information permitting a digital representation of the input signal. The single current source operates without change during the charging and discharging of the capacitor and has temperature compensation that eliminates potential errors due to instabilities in the ambient temperature.
    Type: Grant
    Filed: February 3, 1986
    Date of Patent: July 3, 1990
    Assignee: Thaler Corporation
    Inventor: Hubert F. Elbert