Electronic search tool for locating text locations in printed documents, esp. factual and reference books

摘要

The tool uses several search categories to locate text in a book. The tool is generally permanently attached to the book and enables the location of text locations by the use of at least two categories. The device can contain three rows of keys (1-3) which are each used to identify a category when depressed. The locations of the text are indicated on a LCD display (5), e.g. in he form of page numbers. The processor is powered from solar cells (4).