A document image data storing and controlling system including a document image data storing unit for storing document image data as partial image data which are areas divided according to the attributes such as a text, a graphic, a table, etc.; and a document image data rewriting unit for reducing the...http://www.google.com.hk/patents/US6363178?utm_source=gb-gplus-share專利 US6363178 - Document image data storing and controlling system for saving storage data
