Mitsubishi Electric Corporation

Tomoaki Gyoda

Keisuke Uemura

Takamitsu Yamada

Yunqing Fan

A control apparatus includes a RAM, a non-volatile storage device, and a computing device. The RAM stores an object file including an unresolved symbol. The non-volatile storage device stores a control program that can be updated. The computing device controls reception of the object file, generates a symbol-resolved object file by resolving the unresolved symbol, and updates the control program by using the symbol-resolved object file. The non-volatile storage device stores a symbol table in which only a function and a global variable that are accessed by the computing device executing a program described in the object file and that are allowed to be referred to during a process of updating the control program are defined. The computing device resolves the unresolved symbol by using the symbol table.

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Tokyo, Japan

Tomoaki Gyoda