Test card
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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, and ma
First RTF test card (1953) for the French 819-line TV system. Also used in French Algeria, with modifications also used by TMC in Monaco, Telesaar in the Saar Protectorate, and TVN in Chile
A 1952 Philips TD1410U television set showing the optical monochrome Telefunken T05 test card.
A monoscope
Close-up of the test-card image from a monoscope
Television
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Television is a telecommunication medium for transmitting moving images and sound. Additionally, the term can refer to a physical television set rather than the medium of transmission. Television is a
Test card
…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 (often at sign-on and sign-off), and may be…
Flat-screen television receivers on display for sale at a consumer electronics store in May 2008
Ferdinand Braun
Vladimir Zworykin demonstrates electronic television (1929).
Manfred von Ardenne in 1933