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. 29, 1986
Filed:
Jul. 01, 1983
Hideharu Koike, Yokohama, JP;
Abstract
A data memory circuit is provided including a plurality of depletion type MOS transistors connected in series, each of which stores data including two bits in the form of a threshold voltage. One end of the memory circuit is kept at a power source level and the second terminal thereof is kept at a ground potential level. 0 V is applied to the gate electrode of one selected MOS transistor while the power source voltage is applied to the gate electrodes of the remaining MOS transistors. As a result, a voltage equal to an absolute value of the threshold voltage of the selected MOS transistor is produced at the second terminal. A converter converts the voltage produced at the second terminal into corresponding binary coded data.