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:
Dec. 06, 2011
Filed:
Aug. 18, 2009
Applicants:
Ming-hung Chou, Hsinchu, TW;
Chien-fu Huang, Hsinchu, TW;
Han-lung Huang, Hsinchu, TW;
Shih-keng Cho, Hsinchu, TW;
Inventors:
Ming-Hung Chou, Hsinchu, TW;
Chien-Fu Huang, Hsinchu, TW;
Han-Lung Huang, Hsinchu, TW;
Shih-Keng Cho, Hsinchu, TW;
Assignee:
Skymedi Corporation, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and system of finding a read voltage for a flash memory is disclosed. Data are read from array cells of the flash memory with a default read voltage, and a recorded state bit number that is recorded during programming is also read. Determine an optimal read voltage if the readout data do not pass the error correction control (ECC). Data are then re-read from the array cells of the flash memory with the determined optimal read voltage.