本发明仅需在现有手机上增设光敏接收窗和光敏感应电路，软件上增添防盗模块的设计，成本低廉，使用方便。
The invention is only need to add light sensitive reception window and light sensitive induced circuit, and add module of guarding against theft to software.
同直流信号直接耦合处理相比，交流信号耦合虽然要增设调制解调装置，但对后级信号处理电路的器件要求更低，信噪比更高。
Compared with DC coupling signal processing, it need lower requirement of signal processing circuit and have the merit of high signal-to-noise performance although it require the device of modem.
克服了传统数字电路倍增设备只能点对(多)点传输的局限，可方便的组成EDCM网。
The limitation of traditional DCME (only point to (multi -) point transmission) is overcome by the new one. EDCM network can be easily formed.
本建议包括国际交换中心(isc)和其有关的电路倍增设备之间的信令原则和示例。
This Recommendation contains the principles and examples of Signalling between the International Switching Centres (ISC) and their associated circuit multiplication equipments.
本建议包括国际交换中心(isc)和其有关的电路倍增设备之间的信令原则和示例。
This Recommendation contains the principles and examples of Signalling between the International Switching Centres (ISC) and their associated circuit multiplication equipments.
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