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Proceedings Paper

Adaptive Signal Processing Using A Liquid Crystal Television
Author(s): Stephen T. Welstead; Michael J. Ward; Denise M. Blanchard; George A. Brost; Sandra L. Halby
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Paper Abstract

In this paper we describe a way of using a two dimensional liquid crystal display to provide extended dynamic range for one dimensional spatial light modulation. We illustrate this use of the device in an adaptive signal processing application which requires high accuracy representation of a one dimensional weight vector. One dimension of the television display screen is used to specify the components of the vector. The second dimension is used to provide increased numerical accuracy for each of these components. In this way, we overcome the recognized low dynamic range and limited number of gray scales that is characteristic of liquid crystal displays at the pixel level. Preliminary experimental results verifying this use of the liquid crystal television as an improved accuracy spatial light modulator are presented.

Paper Details

Date Published: 6 December 1989
PDF: 10 pages
Proc. SPIE 1154, Real-Time Signal Processing XII, (6 December 1989); doi: 10.1117/12.962389
Show Author Affiliations
Stephen T. Welstead, Rome Air Development Center and COLSA Inc. (United States)
Michael J. Ward, Rome Air Development Center (United States)
Denise M. Blanchard, Rome Air Development Center (United States)
George A. Brost, Rome Air Development Center (United States)
Sandra L. Halby, Rome Air Development Center (United States)

Published in SPIE Proceedings Vol. 1154:
Real-Time Signal Processing XII
J. P. Letellier, Editor(s)

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