The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 2000
Filed:
Aug. 10, 1998
Timothy B Straw, Narragansett, RI (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A calibration generator responds to a digital signal by generating a diffntial calibration signal with respect to a reference value established by a reference source. The calibration generator includes an input for receiving the digital signal and a differential output for transmitting the differential calibration signal. A voltage divider connects between voltage sources of opposite polarity and equal magnitude for generating a constant magnitude signal across one resistor in the voltage divider. A switch establishes alternate sets of paths from the voltage divider to the differential output. A control responds to the digital signal for controlling the switch thereby to alternate the paths from the voltage divider to the differential output and generate an alternating, fully differential, constant magnitude calibration signal.