Optical parallel logic gates using a shadow-casting system for Optical digital computing
A new, simple method of optically implementing optical parallel logic gates is described. Optical parallel logic gates can be implemented by using a lensless shadow-casting system with a light-emitting diode (LED) array as a light source. Pattern logic, i.e., parallel logic for two binary patterns (variables), is simply obtained with these gates; this logic describes a complete set of logical operations on a large array of binary variables in parallel. Coding methods for input images are considered. Applications of the method for a parallel shift operation and optical digital image processing, processing of gray-level images, and parallel operations of addition and subtraction for two binary variables are presented. Comparison of the operation of the proposed optical logic gate with that of array logic in digital electronics leads to a design concept for an optical parallel array logic system available for optical parallel digital computing.
- Research Organization:
- Department of Applied Physics, Faculty of Engineering, Osaka University, Yamadaoka, Osaka
- OSTI ID:
- 5137843
- Journal Information:
- Proc. IEEE; (United States), Journal Name: Proc. IEEE; (United States) Vol. 72:7; ISSN IEEPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
990200* -- Mathematics & Computers
COMPUTERS
DATA PROCESSING
DIGITAL COMPUTERS
ELECTRONIC CIRCUITS
EQUIPMENT
GATING CIRCUITS
IMAGE PROCESSING
LIGHT EMITTING DIODES
LOGIC CIRCUITS
OPTICAL EQUIPMENT
PARALLEL PROCESSING
PROCESSING
PROGRAMMING
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES