The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2014
Filed:
Aug. 16, 2007
Suying Rui, Beijing, CN;
Fengli Wang, Beijing, CN;
Jin Yu, Beijing, CN;
LI Yu, Beijing, CN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
The invention discloses a data organization method for a change oriented spreadsheet application. In one embodiment, the valid updates to cells and the update times are stored with the cell positions as the primary index, and the valid updates to the same cell are arranged in the order of time. In another embodiment, the valid updates to cells are stored with the update time points of the valid updates of the cells as the primary index, and all the valid updates at the same valid update time point are arranged into an update table, the update table having the same cell structure as the spreadsheet file. In yet another embodiment, data structures organized in both manners are maintained at the same time.