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:
May. 02, 1989
Filed:
Sep. 29, 1987
Alexis Marquot, St Maximin, FR;
Serge Fruhauf, Peynier, FR;
Thomson Composants Militaires et Spatiaux, Paris, FR;
Abstract
In a memory consisting of a matrix of memory cells, each of which is accessible by rows and columns and is connected to write and read circuits which are used, respectively, to programme them in two states, '1' or '0', depending on the input data, and to read the programmed state, the memory cells being of the type that require a programming current in order to be programmed in a first state or '1' and require no current to be programmed in a second state or '0', the safety device consists of a simulation circuit activated by data corresponding to a '0' programming operation and delivering a current identical to that of a memory cell in the '1' programming condition.