An information recording/reproducing device (portable recorder) of an information providing and collecting apparatus, which comprises an information recording unit for recording information into a primary recording medium, e.g., a semiconductor memory; an information reproducing unit for...http://www.google.fr/patents/US5724546?utm_source=gb-gplus-shareBrevet US5724546 - Information providing and collecting apparatus with associated primary and secondary recording mediums
Information providing and collecting apparatus with associated primary and ...
