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:
Apr. 04, 2006
Filed:
Oct. 30, 2001
Applicants:
Jae-yong Jeong, Kyunggi-do, KR;
Sung-soo Lee, Kyunggi-do, KR;
Inventors:
Jae-Yong Jeong, Kyunggi-do, KR;
Sung-Soo Lee, Kyunggi-do, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/00 (2006.01); G11C 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A nonvolatile semiconductor memory device has a special test mode and circuitry for counting its own fail bits. During the test mode, test data is stored in the memory, and also in a special expected data buffer. The test data stored in the memory cells are then compared to that stored in the expected data buffer. Where there is no correspondence, fail bits are detected. The lack of correspondence is registered, counted, and output to a data output buffer block.