Bimodal operation of ferroelectric and electret memory cells...

Details Bimodal operation of ferroelectric and electret memory cells... Bimodal operation of ferroelectric and electret memory cells...

2007-09-04

2007-09-04

Tan, Michael (Department: 2827)

Static information storage and retrieval

Systems using particular element

Ferroelectric

C365S200000

Reexamination Certificate

active

11105350

ABSTRACT:
In a method for enhancing the data storage capability of ferroelectric or electret memory cell which has been applied to storage of data and attained an imprint condition, suitable voltage pulses are used for evoking a temporary relaxation of the imprint condition into a volatile polarization state that can be discriminated from the imprinted polarization state in a non-destructive readout operation. Sequences of one or more voltage pulses are used to evoke readout signals respectively indicative of a non-volatile and a volatile polarization state of the memory cell, but without altering said polarization states. Imprinted memory cells can be overwritten to effect a temporary and volatile storage of data in a memory device in a ferroelectric or electret memory device by assigning a first logical value to imprinted memory cells and a second logical value by transferring selected to memory cells transferred into a relaxed volatile state, whereby the stored logical values can be discriminated by the detecting the difference in dynamic response of respectively imprinted and relaxed memory cells.

REFERENCES:
patent: 5262982 (1993-11-01), Brassington et al.
patent: 5519234 (1996-05-01), Paz de Araujo et al.
patent: 5539279 (1996-07-01), Takeuchi et al.
patent: 5953245 (1999-09-01), Nishimura
patent: 6141238 (2000-10-01), Forbes et al.
patent: 6809949 (2004-10-01), Ho
patent: 2003/0103374 (2003-06-01), Sakai et al.
patent: 2004/0240250 (2004-12-01), Karasawa et al.
patent: 0724265 (1996-07-01), None
patent: WO-02/05287 (2002-01-01), None
patent: WO-02/05288 (2002-01-01), None

Affiliated with

Also associated with

Rating

Bimodal operation of ferroelectric and electret memory cells... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bimodal operation of ferroelectric and electret memory cells..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bimodal operation of ferroelectric and electret memory cells... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3738504