Firstly, the dissertation compares Simulcrypt Technology with Multicrypt Technology after the introduction of some basic knowledge of CA system, and then analyses the communication protocol standard and the physical interface standard of Multicrypt Technology in detail.
首先,本文介绍了条件接收系统的相关知识,比较了同密技术和多密技术,并详细分析了多密技术的通信协议标准DVB-CI标准和多密技术的物理接口规范PC卡标准。
参考来源 - 数字电视条件接收系统多密技术的研究与实现·2,447,543篇论文数据，部分数据来源于NoteExpress
An example of a physical interface is a network adapter.
物理接口的一个示例是网络适配器。
Each of the ethernets being connected corresponds to one physical interface in the bridge.
目前的以太网连接各对应一个物理接口的桥梁。
The link layer provides the physical interface to the communication medium (such as an Ethernet device).
链路层(link layer)提供了通信介质的物理接口(例如以太网设备)。
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