Research And Implementation On Embedded Multi-format Document Presentation And Annotation System

There are various formats of electronic document and E-books nowadays. To read such kinds of documents we need different specific readers. Besides, a convenience annotation tool which does not rely on the electronic document's format is needed. However there lacks such a reader which can open various kinds of document and can make annotation freely. To solve the problem, this paper introduced a useful multi-format document presentation and annotation system based on embedded devices. It was based on embedded system, multi-format documents could be compatible with the reading system. Using the system, users can read the documents while label them just like using pens drawing on paper.Research and implementation of the system included two key technologies, multi-format document presentation technology and multi-format document annotation technology. Presentation technology mainly concerned on how to be compatible with multi-format documents, and add new parsers for new formats. On this basis, cache and dynamic replace strategy are used to speed the rendering process of the document pages. Annotation technology mainly focused on the classification of the document marks, and implementation of the annotation engine to support such various types of marks. The annotation engine also supports mark eraser function. At last, a document container is presented, which combines the original documents and annotation data as a whole. Based on the two key technology, a embedded E-Book is designed, which not only support multi-format document presentation and annotation functions, but also provided a more friendly and convenient document-reading manner.Finally some tests were applied on the system to verify interactive performances. The test results showed that the system fully met the application criteria.