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Thales Dis Design Services Sas

Jorge Perez

Jean-Roch Coulon

Sylvere Teissier

Sylvère Teissier

The method of compressing and decompressing an executable program, can be executed by a microprocessor or interpreted by an interpreter of an integrated circuit device: instructions are reformatted into the format of an initial set of instructions of said program for obtaining instructions in the format of an intermediate set of instructions; repetition templates in the program are determined and, for each repetition template, a pair is defined, formed of said repetition template and of an instruction in the format of a set of instructions; intermediate instructions are replaced by compressed instructions and the links of the compressed program are modified; the compressed program is stored in a memory of the device; and the compressed program is decompressed and the initial instructions are executed by said microprocessor or interpreted by said interpreter. The invention applies, in particular, to the integrated circuits of embedded devices.

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Aix en Provence, France

Jorge Perez