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:
Nov. 05, 2002
Filed:
Jul. 30, 1999
Richard J. Ferrant, St. Ismier, FR;
Robert Alan Wadsworth, Coppell, TX (US);
STMicroelectronics, Inc., Carrollton, TX (US);
Abstract
Programmability of the data background patterns used to test random-access-memories (RAMs) is accomplished by adding to the memory input/output (I/O) buffers of RAM memory, for each data bit of a data background pattern to be programmed, a programming mechanism and a selection mechanism. The programming mechanism is capable of programming a data bit of the data background pattern in accordance with a programming information signal provided to the RAM. The selection mechanism provides either the programmed data bit or a normal, application data bit to an input/output buffer of the RAM in accordance with whether the RAM is in a test mode or a normal operating mode, as indicated by a test control signal provided to the RAM.