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:
Feb. 14, 2006
Filed:
Apr. 21, 2003
Jeffery H. Oppold, Richmond, VT (US);
Michael R. Ouellette, Westford, VT (US);
Larry Wissel, Williston, VT (US);
Jeffery H. Oppold, Richmond, VT (US);
Michael R. Ouellette, Westford, VT (US);
Larry Wissel, Williston, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A redundancy register architecture associated with a RAM provides for soft-error tolerance. An enable register provides soft error rate protection to the registers that contain replacement information for redundant rows and columns. The gate register determines whether a row or column replacement register contains a specific address, and parity protection to the replacement register is activated as necessitated. The register architecture is changed to make the register state a 'don't care' state for the majority of the registers. A small number of registers that are critical to the redundancy system are identified and made more robust to upsets. Word-line and column-line substitution is implemented. A ripple parity scheme is implemented when parity checks are activated.