Method for operating a passive matrix-addressable...

Details Method for operating a passive matrix-addressable... Method for operating a passive matrix-addressable...

2007-05-08

2007-05-08

Ho, Hoai V. (Department: 2827)

Static information storage and retrieval

Systems using particular element

Ferroelectric

C365S222000

Reexamination Certificate

active

11027977

ABSTRACT:
In a method for operating a passive matrix-addressable ferroelectric or electret memory device, a voltage pulse protocol based on a 1/3 voltage selection rule is used in order to keep disturb voltages at minimum, the voltage pulse protocol comprising cycles for read and write/erase bases on time sequence of voltage pulses with defined parameters. The method comprises a refresh procedure wherein cells for refresh are selected and refresh requests processed by a memory device controller, the refresh requests are monitored and processed in regard of ongoing or scheduled memory operations, and refresh voltage pulses with defined parameters are applied to the memory cells selected for refresh, while simultaneously ensuring that non-selected memory cells are subjected to zero voltage or voltages which do not affect the polarization state of these cells.

REFERENCES:
patent: 5550770 (1996-08-01), Kuroda
patent: 5740100 (1998-04-01), Yoo
patent: 6246602 (2001-06-01), Nishimura
patent: 6392919 (2002-05-01), Higgins et al.
patent: 6807083 (2004-10-01), Yamamura
patent: 6937499 (2005-08-01), Nordal et al.
patent: 6937500 (2005-08-01), Gudesen et al.
patent: 2000-11665 (2000-01-01), None
patent: WO 02/05287 (2001-07-01), None
patent: WO-02/05287 (2002-01-01), None

Affiliated with

Also associated with

Rating

Method for operating a passive matrix-addressable... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for operating a passive matrix-addressable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for operating a passive matrix-addressable... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3797305