A method and apparatus are provided for preserving binary data on an analog archival medium, such as microfilm, in which the binary data is encoded, such as in a barcode symbol, in accordance with a predefined encoding specification. The predefined encoding specification may be stored along with the...http://www.google.es/patents/US7489818?utm_source=gb-gplus-sharePatente US7489818 - Method and apparatus for preserving binary data
