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在电视播控部门,普遍使用的录像机有BetacamSX、Betacam SP、MII、DVCPRO、Digital-S等机型。自动播控需要通过计算机对录像机的Play、Stop、Preroll、Eject、REC等动作进行控制。自行开发自动播控软件首先必须熟记录像机通讯控制协议的各种命令,而这些命令非常繁杂且难以记忆,其次还需要在软件中逐个编制各个控制动作的代码模块,花费大量的时间进行简单重复劳动。为了提高程序的集成度,减少代码错误,作者在开发VB应用程序的过程中,将录像机常用的一些操作编译成ActiveX控件。使用者只需简单地调用这些控件,即可完成录像机控制编程。从而极大地简化自动播控软件编程,提高软件开发人员的工作效率。
In the television broadcasting sector, commonly used video recorders have BetacamSX, Betacam SP, MII, DVCPRO, Digital-S and other models. Automatic broadcast control through the computer on the VCR Play, Stop, Preroll, Eject, REC and other actions to control. Self-developed automatic broadcast control software must first familiarize themselves with the various commands of the VCR communication control protocol, and these commands are very complicated and difficult to remember, and secondly need to compile code modules for each control action one by one in the software, spending a lot of time for simple repetition labor. In order to improve program integration and reduce code errors, the author compiles some commonly used video recorders into ActiveX controls in the process of developing VB applications. Users simply call these controls to complete VTR control programming. Which greatly simplifies the programming of automatic broadcast control software to improve the efficiency of software developers.