Memory rewriting apparatus

Abstract

The present invention aims to provide a memory rewriting apparatus which can rewrite data stored in a memory of a portable terminal without stopping in the middle. According to the model of the portable terminal and the version number of data stored in each memory area of the memory, a memory area which requires rewriting is to be specified. An amount of remaining battery charge is compared to an estimated battery consumption for rewriting piece of data requiring the rewriting. In a case where the amount of remaining battery charge is sufficient, the memory rewriting apparatus transmits data to the portable terminal and specifies the memory area for the portable terminal. <IMAGE>

Description

technical field [0001] The present invention relates to a memory rewriting device for controlling rewriting of data in a memory represented by a rewritable nonvolatile memory of a portable terminal such as a cellular phone or a PDA. Background technique [0002] In a portable terminal, the memory (such as flash memory) is divided into a plurality of storage areas, and each area stores, for example, a boot program for starting the portable terminal from the initial state, various system programs, text fonts, color descriptions, and other items. kinds of data. Furthermore, these programs and data are read out to the main memory for use according to instructions from the CPU. [0003] Flash memory, which is a type of memory, is a medium in which data is electronically stored in semiconductor elements, and the method of exchanging data is the same as RAM, which is the main memory of a personal computer. However, RAM loses its contents when the power is cut off, while flash mem...

AI Technical Summary

Problems solved by technology

And, by the remaining battery power detecting device in the portable terminal, the remaining battery power is only known roughly, and it is impossible to fully grasp how much battery remaining power is needed when rewriting. waste

If the data rewriting ends halfway, the portable terminal may not work at all, or even if the battery is charged after writing the boot program on the way, it will not work properly due to the mismatch between the data and the program.

[0011] In this way, even if the remaining battery power is considered to be sufficient, the data rewriting process itself may be aborted halfway due to insufficient battery power during actual data rewriting.

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