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:
Aug. 31, 1993
Filed:
May. 03, 1991
Vincent Fong, Fremont, CA (US);
Hyundai Electronics America, San Jose, CA (US);
Abstract
A memory array formed from single transistor flash cells employs prevention circuitry for minimizing the effect of any floating gates in an over-erased state when accessing data stored in the memory array device. The prevention circuit includes a column line coupling a current limiting device in each row together in a common column. The memory array device also employs a row current limiting device which couples that row of flash cells to the erase potential. The second row switching means is activated to prevent a false signal generated by an over-erased flash cell in the same column as a selected flash cell being accessed for data from masking the data retrieval from the desired flash cell.