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本文叙述了一种付诸实际应用的光笔控制的数字式电视跟踪窗。萧先说明了电视跟踪窗在电视跟踪测量系统中的作用,电视跟踪窗的种类及其比较,自动窗与手动窗的区别,以及带边框的数字式跟踪窗的结构原理。然后叙述数字式电视跟踪窗的光笔控制,其中包括光笔的结构和定位原理,光笔控制跟踪窗位置的电路结构及工作原理,使用光笔中要注意的问题。
This article describes a practical application of light pen control digital TV tracking window. Xiao first explained the role of TV tracking windows in TV tracking and measurement systems, the types of TV tracking windows and their comparison, the difference between automatic windows and manual windows, and the structural principles of digital tracking windows with borders. And then describes the digital television tracking window light pen control, including the light pen structure and positioning principle, the light pen control tracking window position of the circuit structure and working principle, the use of light pen to pay attention to.