A user system for detection and access of hyperlinks within a Braille document. A hyperlink table is generated and includes for each touched item on a page of the Braille document: identification of the touched item, a hyperlink associated with the touched item, and spatial coordinates of the touched...http://www.google.com.hk/patents/US7871271?utm_source=gb-gplus-share專利 US7871271 - Creation and use of hyperlinks for accessing information pertaining to content located in a Braille document
