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. 03, 2015
Filed:
Sep. 22, 2010
Applicants:
Jiunn-der Yu, Hsinchu, TW;
Tsung-hsiung LI, Tucheng, TW;
Inventors:
Jiunn-Der Yu, Hsinchu, TW;
Tsung-Hsiung Li, Tucheng, TW;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/12 (2006.01); G06F 11/27 (2006.01); G11C 29/44 (2006.01); G11C 29/00 (2006.01);
U.S. Cl.
CPC ...
G11C 29/4401 (2013.01); G11C 29/808 (2013.01);
Abstract
A method for repairing a memory includes running a built-in self-test of the memory to find faulty bits. A first repair result using a redundant row block is calculated. A second repair result using a redundant column block is calculated. The first repair result and the second repair result are compared. A repair method using either the redundant row block or the redundant column block is selected. The memory is repaired by replacing a row block having at least one faulty bit with the redundant row block or replacing a column block having at least one faulty bit with the redundant column block.