| 1. | First , the basic principle of rfid is introduced
首先，本文介绍了射频识别系统的基本原理。 |
| 2. | This kind of rfid system has been widely used in some developed countries
在国外，射频识别系统已被广泛的应用。 |
| 3. | So it is very necessary to develop our own technology of cantactless ic cards and driver ic of read / write device
这就要求我们能够自主开发射频识别系统读写器的专用芯片。 |
| 4. | Second , based on reading radio frequency card module of em corporation , the design of a rfid system is given
其次，根据em公司提供的读头芯片，设计研制了一种射频识别系统。 |
| 5. | With the maturity of lsi technology , the volume of rfid system decrease a lot and become practical
由于大规模集成电路技术的成熟,射频识别系统的体积大大缩小,从而进入实用化阶段。 |
| 6. | 4 , a solution of realization of driver ic in read / write device is presented and some test are also performed
4 、提出了一种射频识别系统读写器driver的解决方案，并进行了初步的调试和验证。 |
| 7. | The new patrol system depends on rfid . relatively little weight , low price and convenience make it has a broad market and good capability
该巡更机采用基于射频识别技术的射频识别系统，轻巧方便、成本低廉，有着广阔的市场前景和较强的市场竞争力。 |
| 8. | When multiple tags are transmitting data simultaneity within reader ' s scope , that will occurs a collision . in order to resole this problem , we must use multiple access protocols
在射频识别系统中的阅读器作用范围内，有多个应答器应答要求通信而发生碰撞问题。 |
| 9. | However there is still not mature rfid system including contactless ic cards and read / write devices in our country . almost all these kinds of device should be imported
而在国内，自主开发的成熟的射频识别系统包括非接触ic卡和相应的读写器的专用芯片还没有，绝大部分都要依靠进口。 |
| 10. | Some research about using means of asic to realize read / write device and security ability of data communication is made on the basis of well knowing of the whole rfid systems
本文在深入了解了射频识别系统的基础上，按照asic的正向设计流程，对射频识别系统读写器设计的专用芯片化及其数据通信安全性方面进行了一定的研究。 |
