发明授权
- 专利标题： Spreadsheet recalculation engine version stamp
- 专利标题（中）： 电子表格重新计算引擎版本邮票
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申请号： US09415963申请日： 1999-10-12
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公开(公告)号： US06523167B1公开(公告)日： 2003-02-18
- 发明人: Timothy Fred Ahlers , Andrew J. Becker
- 申请人： Timothy Fred Ahlers , Andrew J. Becker
- 主分类号： G06F9455
- IPC分类号： G06F9455
摘要：
A recalculation engine version stamp is employed to determine whether a spreadsheet program file should be fully recalculated upon opening. When a spreadsheet program file is recalculated and saved, a recalculation engine version stamp is written to the file. The recalculation engine version stamp corresponds to the version of the calculation engine of the application program that last recalculated and saved the program file. When the program file is opened in a spreadsheet application program, the recalculation engine version stamp is compared to the calculation engine version number of the spreadsheet application program. If the calculation engine version number of the spreadsheet application program is more recent than the recalculation engine version stamp of the spreadsheet program file, then a full recalculation of the spreadsheet program file is performed.