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:
Oct. 01, 2002
Filed:
Oct. 29, 2001
Winbond Electronics Corporation, Hsinchu, TW;
Abstract
A current-mode identifying circuit includes a current duplicating circuit for duplicating a cell current, which flows through a selected flash cell in a multilevel flash memory, and for outputting multiple duplicate cell currents. Each of multiple reference current generating units draws a predetermined reference current from a respective duplicate cell current to form a difference current. Each of multiple current comparators receives the difference current from a corresponding reference current generating unit, and outputs a logic signal corresponding to magnitude of the difference current. An encoder encodes the logic signals from the current comparators to identify a level associated with the cell current.
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