Adaptive Signal Processing Using A Liquid Crystal Television

Stephen T. Welstead; Michael J. Ward; Denise M. Blanchard; George A. Brost; Sandra L. Halby

doi:10.1117/12.962389

6 December 1989 Adaptive Signal Processing Using A Liquid Crystal Television

Stephen T. Welstead, Michael J. Ward, Denise M. Blanchard, George A. Brost, Sandra L. Halby

Proceedings Volume 1154, Real-Time Signal Processing XII; (1989) https://doi.org/10.1117/12.962389
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

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.

Citation Download Citation

Stephen T. Welstead, Michael J. Ward, Denise M. Blanchard, George A. Brost, and Sandra L. Halby "Adaptive Signal Processing Using A Liquid Crystal Television", Proc. SPIE 1154, Real-Time Signal Processing XII, (6 December 1989); https://doi.org/10.1117/12.962389

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