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METHOD FOR REWRITING PROGRAM, REPROGRAM APPARATUS, AND ELECTRONIC CONTROL UNIT

  • US 20130151647A1
  • Filed: 12/04/2012
  • Published: 06/13/2013
  • Est. Priority Date: 12/09/2011
  • Status: Abandoned Application
First Claim
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1. A method for rewriting a program stored in a memory in a subject unit using a reprogram apparatus via an in-vehicle communication system linked with the reprogram apparatus, the subject unit being one of a plurality of electronic control units included in the in-vehicle communication system,the method comprising:

  • dividing, in the reprogram apparatus, a reprogram data set, which is used for rewriting the program, into a plurality of unit blocks, each unit block having a predetermined data length and a serial number;

    designating, in the reprogram apparatus, specified unit blocks having a prespecified value;

    designating, in the reprogram apparatus, a consecutive range containing at least a predetermined minimum number of said specified unit blocks;

    transmitting, from the reprogram apparatus to the subject unit, range information containing a range start number and a range end number, the range start number being the serial number assigned to the specified unit block being a start of the consecutive range, the range end number being the serial number assigned to the specified unit block being an end of the consecutive range;

    transmitting, from the reprogram apparatus to the subject unit, transmit-target blocks that are the unit blocks of the plurality of unit blocks other than the specified unit blocks included in the consecutive range; and

    restoring, in the subject unit, the reprogram data set using (i) the specified unit blocks included in the consecutive range generated based on the range information and (ii) the transmit-target blocks that are transmitted from the reprogram apparatus, rewriting the program in the memory.

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