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:
Nov. 06, 2012
Filed:
Jun. 16, 2009
Chris Nga Yee Avila, Sunnyvale, CA (US);
Jonathan Hsu, Newark, CA (US);
Alexander Kwok-tung Mak, Los Altos Hills, CA (US);
Jian Chen, Menlo Park, CA (US);
Grishma Shailesh Shah, San Jose, CA (US);
Chris Nga Yee Avila, Sunnyvale, CA (US);
Jonathan Hsu, Newark, CA (US);
Alexander Kwok-Tung Mak, Los Altos Hills, CA (US);
Jian Chen, Menlo Park, CA (US);
Grishma Shailesh Shah, San Jose, CA (US);
SanDisk Technologies Inc., Plano, TX (US);
Abstract
In a nonvolatile memory array, data is stored in multi-level cells (MLC) as upper-page data and lower-page data. Safe copies of both upper-page and lower-page data are stored in on-chip cache during programming. If a write fail occurs, data is recovered from on-chip cache. The controller does not have to maintain safe copies of data.