发明名称 |
Programmable portable electronic device |
摘要 |
According to a portable medium (IC card) of this invention, a memory area is divided into a system program area and a user program area. A text transmitted between the IC card and a host system connected thereto includes a command text and a response text. The command or response text includes a flag indicating that the text is written in the user program area or the system program area. The memory area has a conversion table for a function code and the start address of a program corresponding to the function code. The conversion table is looked up using the given function code as a parameter, thereby obtaining the start address of the corresponding program. The memory area has a correspondence table between a newly added function code and the start address of an added function program. The added function program is selectively executed.
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申请公布号 |
US4827512(A) |
申请公布日期 |
1989.05.02 |
申请号 |
US19860915514 |
申请日期 |
1986.10.06 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
HIROKAWA, KATSUHISA;IIJIMA, YASUO |
分类号 |
G06F3/00;G06F11/277;G07F7/10;(IPC1-7):H04L9/00 |
主分类号 |
G06F3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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