A book or other digital content is represented as a set of objects in a
relational database schema format called IBF (Interactive Book Format)
and the controlling system software. This design provides for viewing
books in a manner that coordinates additional information and provides
interaction with the original book, while not disturbing the original
publication and copyrighted material and even protecting that copyrighted
material from piracy by supporting industry standard digital rights
management security features. The inventive technique includes the use of
conversion engines which will aid publishers in converting existing books
into IBF format. The inventive technology further provides the ability to
read any book in IBF format on a computer using refreshable Braille
display, allowing the reader the advantage of reading all books in this
format without having to purchase expensive, specially made Braille
books.