An apparatus for recording data to a film, executing: both unchangeable recording such as optical recording, and changeable recording such as magnetic recording for relatively important data, which is required protection from data failure and is permitted to change such as date, date print mode, and...http://www.google.fr/patents/US5649247?utm_source=gb-gplus-shareBrevet US5649247 - Apparatus for recording information of camera capable of optical data recording and magnetic data recording
Apparatus for recording information of camera capable of optical data ...
