An apparatus for identifying a character which cannot be machine read so that the operator may observe and hopefully recognize the character in question. A bit-map video image of the unrecognized character(s) is inserted in the ASCII data line of neighboring characters to create an impression of the...http://www.google.de/patents/US4974260?utm_source=gb-gplus-sharePatent US4974260 - Apparatus for identifying and correcting unrecognizable characters in optical character recognition machines
