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. 20, 2005
Filed:
Nov. 18, 2002
Menahem Lasser, Kohav Yair, IL;
Meir Avraham, Rishon Lezion, IL;
Menahem Lasser, Kohav Yair, IL;
Meir Avraham, Rishon Lezion, IL;
M-Systems Flash Disk Pioneers Ltd., Kfar Saba, IL;
Abstract
A method of managing the erasure of units of a flash memory. An indication is provided that an erasure of one or more units is pending, either before the units are erased or, in case of power loss, during the erasure. Subsequent to a completed erasure, an indication provided before an erasure is either erased or offset by an indication of a completed erasure. Upon powering up, or, in some embodiments, also prior to writing, the indications are inspected and units not completely erased are erased again. The present invention may be implemented in hardware, in firmware, in software, or in any combination of the three. In embodiments not totally reliant on software, appropriate non-volatile registers are provided, for storing the indications as erase pending flags and erase completed flags, and also for storing corresponding unit numbers.