Patent ID: 6049768
Filing Date: 2000-04-11
Classification: G10L

Abstract:
A method of recognizing a received user identifier assigned to a user, said method comprising the steps of:(a) preassigning to the user a user identifier, the user identifier being generated by retrieving an implicit checksum and calculating the user identifier using a checksum operation so that the user identifier conforms to the implicit checksum, the implicit checksum being based on a checksum parameter;(b) receiving from the user the preassigned user identifier;(c) receiving at least one recognized identifier based on the received preassigned user identifier;(d) calculating a checksum for one recognized identifier using a checksum operation;(e) retrieving the implicit checksum;(f) comparing the calculated checksum with the implicit checksum; and(g) selecting the one recognized identifier as the received preassigned user identifier if the calculated checksum equals the retrieved implicit checksum.