Ferroelectric optical image comparator

Details Ferroelectric optical image comparator Ferroelectric optical image comparator

1989-08-30

1993-11-30

Lall, Parshotam S.

Boots, shoes, and leggings

382 32, 382 34, G11C 1122

Patent

active

052671798

ABSTRACT:
A ferroelectric optical image comparator has a lead lanthanum zirconate titanate thin-film device which is constructed with a semi-transparent or transparent conductive first electrode on one side of the thin film, a conductive metal second electrode on the other side of the thin film, and the second electrode is in contact with a nonconducting substrate. A photoinduced current in the device represents the dot product between a stored image and an image projected onto the first electrode. One-dimensional autocorrelations are performed by measuring this current while displacing the projected image.

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