The present invention provides a method and apparatus for extracting, synchronizing, displaying, and manipulating text and image documents in electronic form for display. In the preferred embodiment of the present invention, text and image files for documents, such as for example patent documents, are...http://www.google.de/patents/US5623681?utm_source=gb-gplus-sharePatent US5623681 - Method and apparatus for synchronizing, displaying and manipulating text and image documents
