System for finding differences between two computer files...

Details System for finding differences between two computer files... System for finding differences between two computer files...

G - Physics

06

F

G06F 9/445 (2006.01) G06F 9/44 (2006.01) G06F 9/45 (2006.01)

Patent

CA 2295479

This method and apparatus set out an updating system to convert an OLD input file (34) into a NEW file (40) with a distributed patch file (36). The OLD input file (34) is examined to locate strings in it which are stored in a table; the NEW file is tested for matches (perfect matches are not mandated) which are stored. In an iterative process, matches are refined and optimized, resulting in a smaller and more easily distributed patch file (36). The patch file (36) can be sent to locations where the OLD input file (34) is converted by the patch file into a NEW file (40).

Cette invention se rapporte à un procédé et à un appareil constituant un système de mise à jour permettant de convertir un ANCIEN fichier (34) en un NOUVEAU fichier (40) à l'aide d'un fichier de correction réparti (36). On analyse l'ANCIEN fichier (34) afin d'y localiser des chaînes qui sont stockées dans une table; on essaie de trouver dans le NOUVEAU fichier des correspondances (les correspondances parfaites ne sont pas obligatoires) qui sont stockées. Puis au cours d'un processus itératif, on affine et on optimise ces correspondances, ce qui produit un fichier de correction (36) plus petit et plus facile à répartir. Il est possible d'envoyer ce fichier de correction (36) vers les endroits où l'ANCIEN fichier (34) peut alors être converti par le fichier de correction (36) en un NOUVEAU fichier (40).

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