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:
Mar. 02, 1992
Filed:
Jun. 19, 1990
Gene L Haviland, San Diego, CA (US);
Patrick A Shoemaker, Lemon Grove, CA (US);
James R Feeley, San Diego, CA (US);
Alfons Tuszynski, San Diego, CA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A non-volatile analog memory circuit includes charge depositing and storing ircuitry, voltage sensing circuitry, and closed-loop control circuitry. The charge depositing and storing circuitry includes a floating gate operable to receive charge deposited on it. The voltage sensing circuitry supplies an analog output in response to the sensed gate potential. The closed-loop control circuitry is used to control charge deposition. The control circuitry is operable to change the charge on the gate by directing electrical pulses of appropriate polarity to the charge depositing and storing circuitry. This is done to diminish the error between the analog output signal of the charge sensing circuitry and an analog input signal for providing a substantially accurate representation of the analog input signal.