A technique for providing simplified and more flexible text recovery in an electronically stored text. The text storage device is of the hand-held type and may accommodate the text of the entire bible, for example. The user may access the stored text in a read or search mode. The device is programmed...http://www.google.com.tw/patents/US5640552?utm_source=gb-gplus-share專利 US5640552 - Method and apparatus for providing multi-level searching in an electronic book
