Nondestructive reading of a ferroelectric capacitor

Details Nondestructive reading of a ferroelectric capacitor Nondestructive reading of a ferroelectric capacitor

1991-07-18

1993-11-16

LaRoche, Eugene R.

Static information storage and retrieval

Systems using particular element

Ferroelectric

365149, G11C 700

Patent

active

052629821

ABSTRACT:
A circuit and technique for accessing a ferroelectric memory to read polarization states without destruction thereof. A small-amplitude positive polarity pulse is applied to the ferroelectric capacitor, and the resultant positive charge read therefrom. Thereafter, a small-amplitude negative polarity pulse is applied to the ferroelectric capacitor, and the resultant negative charge read therefrom. Because of the nonlinear hysteresis characteristics of the ferroelectric capacitor, the positive and negative readout charges are of different amplitudes. Sense amplifier circuits produce a summation of the positive and negative readout signals, with a resulting summation polarity defining the polarization state initially stored in the ferroelectric capacitor.

REFERENCES:
patent: 2876435 (1959-03-01), Anderson
patent: 2884618 (1959-04-01), Epstein
patent: 2926336 (1960-09-01), Chynoweth
patent: 2955281 (1960-10-01), Brennemann et al.
patent: 2957164 (1960-10-01), Long et al.
patent: 3002182 (1961-09-01), Anderson
patent: 3015090 (1961-12-01), Landauer
patent: 3462746 (1969-08-01), Bartlett
patent: 3599185 (1971-08-01), Bartlett
patent: 3798619 (1974-03-01), Samofalov et al.
patent: 3820088 (1974-06-01), Hadni et al.
patent: 4262339 (1981-04-01), Geary
patent: 4873664 (1989-10-01), Eaton
patent: 4888733 (1989-12-01), Mobley
patent: 5031143 (1991-07-01), Jaffe
patent: 5086412 (1992-02-01), Jaffe

Affiliated with

Also associated with

Rating

Nondestructive reading of a ferroelectric capacitor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Nondestructive reading of a ferroelectric capacitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nondestructive reading of a ferroelectric capacitor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-26706