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. 29, 2008
Filed:
Oct. 27, 2005
Yan LI, Milpitas, CA (US);
Long Pham, Milpitas, CA (US);
Sandisk Corporation, Milpitas, CA (US);
Abstract
In a non-volatile memory, the initiation of program verification is adaptively set so that programming time is decreased. In one approach, non-volatile storage elements are programmed based on a lower page of data to have a voltage threshold (V) that falls within a first Vdistribution or a higher, intermediate Vdistribution. Subsequently, the non-volatile storage elements with the first Vdistribution either remain there, or are programmed to a second Vdistribution, based on an upper page of data. The non-volatile storage elements with the intermediate Vdistribution are programmed to third and fourth Vdistributions. The non-volatile storage elements being programmed to the third Vdistribution are specially identified and tracked. Verification of the non-volatile storage elements being programmed to the fourth Vdistribution is initiated after one of the identified non-volatile storage elements transitions to the third Vdistribution from the intermediate Vdistribution.