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:
Jun. 13, 2006
Filed:
Feb. 06, 2002
Paul William Coteus, Yorktown, NY (US);
William Paul Hovis, Rochester, MN (US);
William Wu Shen, Los Altos, CA (US);
Toshiaki Kirihata, Poughkeepsie, NY (US);
Paul William Coteus, Yorktown, NY (US);
William Paul Hovis, Rochester, MN (US);
William Wu Shen, Los Altos, CA (US);
Toshiaki Kirihata, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The invention is a selectable function that permits the address portion of data words to be separated from the storable content portion and that address portion to be used for different purposes without disturbing the stored contents in the memory array. The invention may be viewed as a command capability that permits analysis of signals for errors in such items as addresses, impedance calibration, timing, and component drift that develop in and between regions of an overall memory array. Techniques are advanced involving data responsive selectable array circuitry modification for such operations as address correctness verification, machine timing and component drift correction purposes. The principles are illustrated with memory systems built of Synchronous Dynamic Random Access Memory with Double Data Rate (SDRAM-DDR) elements.