单线

This paper precisely conducts the special topic research in view of some important technologies of the digitized control module.(1) AC motor control circuit of PAN/TILT is designed ,which speed is controlled by AT89C51 MCU. DC motor control circuit of LENS is designed too.(2) The hardware and software of automatic temperature control is designed, which used in camera protect box without A/D IC. A kind of single wire communication IC is used in the circuit. So, the program is given.(3) A method of video switch without picture shock is discussed in this paper, and 16x8 video switch circuit is designed. AT89C51 can carry out time sequence logical control with the sync signals by request..(4) The module of real-time clock is designed, in which, LCM is used, a kind of three-wire communication IC is used too.

1给出了一种由89C51单片机控制的简单易行的交流云台转动变速控制电路，实现了云台及其电动三可变镜头的控制；(2)给出了无需外加A/D、单线通信的防护罩自动温度控制电路，完成了单片机温度控制软件的设计；(3)提出了"无抖动"视频切换的设计思想，给出了16×8的视频切换电路，利用单片机在视频信号的场消隐期控制切换，从而实现了"无抖动"切换；(4)给出了一种三线接口通信的液晶显示实时时钟电路，完成了程序设计；(5)提出了在视频监控系统数字控制模块中，用CAN总线取代传统的RS-485总线，实现PELCO-P协议传输的方案。

In this paper, the principle, the basic structure and the workflow of this system are analyzed. Aiming at the Snort system working in a single thread, a reform scheme based on the multithreading technique for developing its performance is put forward, including a queue between two function modules and a busy sign flag in every decoder and chain node. The workflow of the reformed system is described then.

为提高Snort系统的性能，针对其工作流程是单线程的特征，用处理模块间设置缓冲队列、各个协议解码器和链表节点设置忙闲标识等方法实现了对其的多线程改造，并详细描述了改造后系统的工作流程，最后结合简化模型模拟实验结果，分析了改造前后的系统各性能的变化。

Centrex is basically normal single line telephone service with "bells and whistles," added.

Centrex 基本上是一种常规单线路电话服务，附带了"额外的业务"。

Thinking, thinking like a single line, and emphasized a kind of circular thinking, thinking annular ring.

thinking，一种单线似的思考，而强调一种circular thinking，环状的圆环思考。

The new antenna has the advantages of sim ple structure, easy feeding and a wide frequency range, and circular polarized wave. The characteristics are m uch better than a bifilarbackfire helicalantenna, a shortbackfire antenna and a backfire...

它具有结构简单、馈电方便、遮挡小、频带宽、增益高且易于产生圆极化波等优点，性能远优于带相同接地板的螺旋天线、普通短背射天线以及单线背射螺旋作馈源的短背射天线。

Single wire junctionscould be formed using a constantan lead and the copper pipe being sensed.

使用康铜导线和铜管能形成单线结点。

Based on Advanced Public Transportation System, the paper studies the vehicle dynamic dispatching problem of singular bus line. A real-time operational control model is developed to deal with the problem, which proves to be a convex programming.

基于先进公共交通系统环境，研究了城市公共汽车单线路运行系统的动态调度问题，建立了公交车辆运行的实时控制模型，证明其为凸规划问题。

The icons of the leaves are also displayed in the edit box in the single line version of the control.

叶片的图标也显示在编辑控件的单线版本中。"/页"

Navigation system ; electronic map ; traffic rule ; single-line model ; double-line model

导航系统；电子地图；行车规则；单线模型；双线模型

The machine is suitable for large area operation of engraving craft such as single line,milling,3D embossment and cutting.

本机适用于大面积的单线体、铣底、3D浮雕、切割等雕刻工艺操作，是一种高中档次的大型木工机械设备。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。