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. 21, 1989
Filed:
May. 20, 1987
Winfried Glaeser, Munich, DE;
Dieter Schuett, Munich, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A programmable circuit for carrying out logic operations on binary input signals. The programmable circuit contains a matrix of first lines crossed with second lines thereby defining intersections at which logic units corresponding to a function table are connected. Two of the first lines are combined to form a line pair. The matrix is programmed in that a logic unit is connected between one of the lines of the line pair and a second line for the binary value of '1' and a logic unit is connected between the other of the lines of the line pair and the second line for programming a binary value of '0'. Utilizing control signals, the logic units can be activated either in one direction or the other. Therefore, it is thus possible to set a line pair either as an input or as an output of the programmable circuit. When a line pair acts as an input, the binary signals coupled into the second lines by the logic units are subjected to an AND operation on the second lines. When a line pair is operated as an output, then the binary signals coupled from the second lines onto the first lines of the line pair by the logic units are subjected to a NOR operation.