| 基于两级索引的IC卡终端设备状态定位方法 |
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| 引用本文： | 周书民,刘自强,曹俊武. 基于两级索引的IC卡终端设备状态定位方法[J]. 微计算机信息, 2007, 23(29): 296-297 |
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| 作者姓名： | 周书民 刘自强 曹俊武 |
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| 作者单位： | 东华理工学院,核资源与环境教育部重点实验室,南昌,330013 |
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| 基金项目： | 教育部核资源与环境重点实验室开放基金 |
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| 摘 要： | 针对由不同类型的IC卡终端设备组成的一卡通系统，下位机的状态对于系统至关重要。论文在建立终端设备状态表的基础上，提出了基于两级索引机制的终端设备状态定位算法。算法使用设备编号作为关键字，用压缩BCD码表示四位的设备编号被分成两部分，前两位与后两位分别形成索引，根据状态表中的索引值来快速定位相应设备状态信息，从而得到相应的设备状态信息。
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| 关 键 词： | 两级索引 压缩BCD码 状态 IC卡 终端设备 |
| 文章编号： | 1008-0570（2007）10-2-0296-02 |
| 修稿时间： | 2007-09-23 |
The State Location of IC Card Terminal Device Based on Two Stage Index |
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| ZHOU SHUMIN,LIU ZIQIANG,CAO JUNWU. The State Location of IC Card Terminal Device Based on Two Stage Index[J]. Control & Automation, 2007, 23(29): 296-297 |
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| Authors: | ZHOU SHUMIN LIU ZIQIANG CAO JUNWU |
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| Abstract: | The state of terminal device is critical to IC card system which consists of different kinds of terminal device.The paper introduce the structure of terminal device table and present a state location of IC Card terminal device based on two stage index strategy. As a keyword , the device number is a four bit compressed BCD code. The device number is divided two parts, the previous two-bit and last two-bit correspond two index.The device state information can be located according to the index information is a fast way. |
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| Keywords: | two stage index compressed code state IC card terminal device |
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