视频字符叠加技术的新颖实现方案

New Method of Superposing Characters on Video Map

分析了视频字符叠加的作用和发展现状,介绍基于中小规模集成电路、FPGA、单片机和专用芯片等的实现方案,并对它们各自的特点简要地作了分析和比较。开发出一种适用于任何场合的字符叠加方案,该方案最大的特点是字符复杂程度和数量不受限制。

After introducing several methods on realization of superposing characters on video map,the article proposes a new method of superposing characters on video map which the amount and contents of characters to be superposed are not confined.