Download or read book Study of Microcomputer-Based Real-Time Programmable Optical Signal Processor and Application written by Francis T. Yu and published by . This book was released on 1987 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have, in this period, developed a microcomputer-based optical linear transformation processing technique. The technique utilizes a systolic array processing method to perform various types of linear transformations, such as discrete Fourier transformation, discrete Hilbert transformation, discrete chirp-Z transformation and many others. By partially parallel addressing two magneto-optic spatial light modulators (MOSLM), this proposed system would offer high speed and parallel processing capability of optics and programmability of microcomputer. In this research, we have shown that a color liquid crystal television (LCTV) can be used for color pattern recognition. The grid structure of the display panel together with a specially designed color filter provides spatially isolated polychromatic spectra to enable polychromatic signal detection. We have found a serious drawback of the color LCTV which is the lack of space invariance, even after it has been immersed in a liquid gate. This drawback is primarily due to the inherent color filter in the liquid crystal display and the phase modulation by liquid crystal molecules. A quantitative investigation of space variance of the LCTV, especially the color LCTV, is currently being studied.