back porch

English

back porch (plural back porches)

A porch at the rear of a building.
(television) The portion of each scan line between the end (rising edge) of the horizontal sync pulse and the start of active video, used to restore the black level reference in analog video.

单词	back porch
释义	back porch English Noun back porch (plural back porches) A porch at the rear of a building. (television) The portion of each scan line between the end (rising edge) of the horizontal sync pulse and the start of active video, used to restore the black level reference in analog video.
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