RCA PRINT READER INVESTIGATION AND TESTS.
RAYTHEON CO WALTHAM MASS
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The objective of this program was to determine the potential performance of the RCA electro-optical reading machine. Primary emphasis was placed on evaluating the ability of the machine to recognize complete English and Russian fonts. This evaluation was accomplished by extending the capacity of the RCA experimental machine and measuring the correlation ratios of the signals from the recognition channels while a set of test documents was read. The correlation ratios measured indicated the ability of the machine to distinguish among the characters in English and Russian fonts. The results of these tests proved that the electro-optical print reading method is suitable for reading both fonts. The results also indicated that reliable multifont operation can be realized. The feasibility of using an electronic flying-spot scanner to scan booksize lines of print was also investigated. To achieve this objective, a sectionalized scanning technique was developed and successfully demonstrated. It enabled exceptionally high resolution to be realized without the need for a special kinescope. The report contains a detailed description of the operating principles of the RCA machine, results of the correlation ratio tests, a description of the sectionalized scanner, and a description of a number of techniques for extending the performance of this machine. Author