Fecha de publicación: 30/06/1981 Fuente: Wipo "digitalization" ABSTRACT OF THE INVENTION A digital correlator compares two digital words a plurality of times. Each time the second digital word is shifted by one additional bit with respect to the first digi- tal word. The results of the various comparisons are stored. The stored results are then searched to find the location of the results indicating the greatest similarity between the bits of the first and second digital words. This location is indicative of the number of bits by which the second digital word is displaced with respect to the first digital word when greatest similarity occurs.