Input signal DC restoration is accomplished with an internal sync tip clamp.

输入信号的直流恢复是完成了与内部同步头钳位。

youdao

Pulse synchronizing signal: input device sync pulse commonly used empty contact way.

脉冲同步信号：装置的同步脉冲常用空接点方式输入。

youdao

No sync correction is performed, so a low-quality input with horizontal or vertical jitter will still appear jittery after this filter.

因为没有校正同步，所以低质量视频中的横向和纵向抖动经过过滤器后仍然存在。

youdao

Starting with the base, the back side features inputs for power, a 3.5mm line-in jack (sadly, you can't bleed in your PMP with the TOSlink feed), an optical input and a sync button.

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Apps can simply ask if you want to sync with Dropbox now and the act of creating and maintaining a folder won't necessitate any further user input (though, it still can if the dev so chooses).

ENGADGET: Dropbox announces Sync API for Android and iOS