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. 30, 1991
Filed:
May. 12, 1989
Cecil H Kaplinsky, Palo Alto, CA (US);
Plus Logic, Inc., Santa Clara, CA (US);
Abstract
Apparatus for programming an OR gate, an AND gate or an EXCLUSIVE-OR gate to accept or not accept an input signal at an input terminal of the gate. The apparatus includes two pass transistors, a source of high or low voltage depending on the gate to be programmed, and a control signal that is used for programming the gates of the pass transistors. The two pass transistors may be of the same channel type i.e.,. both n-channel or both p-channel, or they may be of opposite channel types. This apparatus provides positive input signals from a group of input signals to avoid voltage signal ambiguities in programming the gates. Use of these programmable gates in combination in an AND-OR array is illustrated.