Test card
id:
test-card-178-17922628
title:
Test card
text:
A test card, also known as a test pattern or start-up/closedown test, is a television test signal, typically broadcast at times when the transmitter is active but no program is being broadcast. Used since the earliest TV broadcasts, test cards were originally physical cards at which a television camera was pointed, allowing for simple adjustments of picture quality. Such cards are still often used for calibration, alignment, and matching of cameras and camcorders. From the 1950s, test card image
brand slug:
wiki
category slug:
encyclopedia
description:
Test signal in television broadcasting
original url:
https://en.wikipedia.org/wiki/Test_card
date created:
2003-02-25T14:57:50Z
date modified:
2024-09-04T17:29:38Z
main entity:
{"identifier":"Q1653619","url":"https://www.wikidata.org/entity/Q1653619"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/6/66/SMPTE_Color_Bars.svg","width":672,"height":504}
fields total:
13
integrity:
16