CAR ONBOARD CONTROL DEVICE AND PROGRAM UPDATING SOFTWARE
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United States of America Patent
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Issued Date -
Nov 7, 2019
app pub date -
Mar 15, 2018
filing date -
Mar 24, 2017
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Abstract
The present invention enhances the security of program update. In addition, the present invention simplifies program version control. The present invention includes: a decompression and restoration unit that, when differential data between a new execution program and a specific program is input, decompresses and restores the compressed specific program and rewrites the execution program as the specific program; and a differential restoration unit that differentially restores the new execution program from the differential data and the specific program and rewrites the specific program as the new execution program. The present invention also includes: a differential restoration unit that, when differential data between a new execution program and a specific program is input, differentially restores the new execution program from the differential data and the execution program in a memory unit and rewrites the execution program in the memory unit as the new execution program; and a decompression and restoration unit that decompresses and restores the compressed specific program and rewrites the new execution program as the specific program.
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