Data compaction method for an intermediate object code program executable in an onboard system provided with data processing resources and corresponding onboard system with multiple applications

摘要

The invention concerns a data compaction method and system for an intermediate program. The method consists in searching the program ( 1000 ) for identical sequences (Si) and counting Ni number of occurrences of each sequence (Si), a comparison test ( 1001 ) to find the superiority of a function f(Ni) to a reference value enables to generate ( 1003 ) a specific instruction of a specific code (Ci) with which the sequence (Si) is associated, replacing ( 1004 ) each occurrence in the sequence (Si) by the specific code (Ci) in the intermediate program to create a compacted intermediate program (FCC) with which an executing file (FEX) is associated. The invention is applicable to multiple application portable objects such as microprocessor cards, onboard systems of the like.