Patent ID: 7783634
Filing Date: 2010-08-24
Classification: G06F,G06K

Abstract:
1. A device for managing electronic documents comprising: a display unit that displays an electronic document; a pen data processor that collects data hand-written by a user with a digital pen on a physical object when viewing a page within the electronic document at a first time point and that forms stroke set data from the collected data, said stroke set data being accumulated in a database; an index data generator unit that generates a plurality of indices each of which links (i) a symbol string in the page of the electronic document displayed on the display unit with (ii) an order of occurrence of the symbol string in the page of the electronic document as counting from the beginning of the electronic document, and generates a set of index data including said indices, a first time point and an ID of the electronic document; a storage unit that stores the generated index data; an index data search unit that searches the storage unit for a set of index data matching with input search conditions; and a page search unit that searches for the page within the electronic document with matching index data by searching the symbol strings of the matching index data within said electronic document and identifying positions of said symbol strings appearing in an order of occurrence linked with said symbol strings within said electronic document, and searches for a page within said electronic document containing maximum numbers of matching pairs of said symbol strings and said orders of occurrence, wherein the page search unit searches at a second time point for the page of the electronic document and the stroke set data formed from the data hand-written by the user at the first time point, the second time point is later than the first time point, and the display unit displays the searched page.