An apparatus for recording and reproducing digital data according to the present invention, includes: a group converter; a controller; a recording converter; a recording unit; a reproducing unit; a reproducing converter; and a group reverse converter, wherein the group converter includes: a block management...http://www.google.de/patents/US6362928?utm_source=gb-gplus-sharePatent US6362928 - Apparatus for recording and reproducing digital data and method for the same
