捕获电视的精确调焦

An Accurate Control System of the Capture TV Zoom

介绍捕获电视调焦系统精确调焦的设计与实现 简要介绍了用于ST16 16 0变焦距镜头手动与电动调焦控制的两种方式 ,调焦系统的组成 着重分析了捕获电视调焦系统基于距离信息 ,利用软件补偿提高系统跟踪精度的思路及设计方法 该方法成功地应用于Askania电影经纬仪捕获电视调焦系统中 。

An applied zoom control system of a capture TV including its working principle and implement method is presented. A manual and electric circuit for ST16160 zoom are briefly introduced. The question on big field capturing when capturing TV switching to tracking TV is put convert. The zoom system design and software compensating for high-zoom-precision based on distance information are analyzed when capturing TV working in big field. Experiments show this design is suitable for improving tracking capability , which is successfully implemented in the target imaging zoom system.