TV system: According to the system used by users, PAL system and NTSC system could be selected or select the auto and let the system to automatically select.
电视系统：依照用户使用系统，可以选择PAL系统、NTSC系统或者选择自动，让系统自动选择。
In this paper, a design method of interface extended card of microcomputer im-age collecting on PAL system color TV signal is introduced.
本文主要介绍一种针对PAL制彩色电视信号的微机图象采集接口扩展卡的设计方法。
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