Method of improving sensitivity of electric field sensor,...

Details Method of improving sensitivity of electric field sensor,... Method of improving sensitivity of electric field sensor,...

2007-12-28

2010-12-14

Lamb, Christopher R (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Electrical modification or sensing of storage medium

Reexamination Certificate

active

07852738

ABSTRACT:
A storage apparatus includes a ferroelectric recording medium, an electric field sensor including a source region, a drain region and a resistance region electrically connecting the source region to the drain region and having a resistance, which varies according to an intensity of an electric field due to a polarization voltage of an electric domain of the recording medium, a voltage applying unit applying a drain voltage between the source region and the drain region, and a reproducing signal detection unit including at least one negative resistor installed in an electric circuit connecting the drain region to the voltage applying unit, and detecting a change in a voltage between the drain region and the at least one negative resistor.

REFERENCES:
patent: 4707669 (1987-11-01), Mekata et al.
patent: 6477132 (2002-11-01), Azuma et al.
patent: 6515957 (2003-02-01), Newns et al.
patent: 2005/0135200 (2005-06-01), Mejia et al.

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