The 567-line television system was an experimental late 1940s proposal by
Philips
Koninklijke Philips N.V. (), commonly shortened to Philips, is a Dutch multinational conglomerate corporation that was founded in Eindhoven in 1891. Since 1997, it has been mostly headquartered in Amsterdam, though the Benelux headquarters is ...
of the
Netherlands
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for a European
television
Television, sometimes shortened to TV, is a telecommunication Media (communication), medium for transmitting moving images and sound. The term can refer to a television set, or the medium of Transmission (telecommunications), television tra ...
system, with some test transmissions being made from
Eindhoven
Eindhoven () is a city and municipality in the Netherlands, located in the southern province of North Brabant of which it is its largest. With a population of 238,326 on 1 January 2022,525-lines system, the difference being the reduction of horizontal scan frequency from 15,750 to 14,175 Hz. This would have meant that the American sound
carrier frequency
In telecommunications, a carrier wave, carrier signal, or just carrier, is a waveform (usually sinusoidal) that is modulated (modified) with an information-bearing signal for the purpose of conveying information. This carrier wave usually has ...
of 4.5 MHz above the picture carrier would have also been the standard for Europe, and hence a lot more common worldwide.
By 1950 some 567-line television sets were built and distributed to Philips employees for home testing.
The 567-line system was proposed for international use but never adopted.
Russian
Russian(s) refers to anything related to Russia, including:
*Russians (, ''russkiye''), an ethnic group of the East Slavic peoples, primarily living in Russia and neighboring countries
*Rossiyane (), Russian language term for all citizens and peo ...
engineers had already shown how 525-lines could be easily adapted to a higher resolution by breaking with American 6 Mhz channel bandwidth restrictions and moving the sound carrier up from 4.5 to 6.5 MHz, along with
625-line 625-lines is a standard-definition television resolution used mainly in the context of analog systems. It was first demonstrated by Mark Iosifovich Krivosheev in 1948.
Analog broadcast television standards
The following International Telecommunic ...
scanning. This 625-line system was eventually approved as
CCIR System D
CCIR System D is an analog broadcast television system used in the Commonwealth of Independent States, parts of Eastern Europe and People's Republic of China.
Initially known as the I.B.T.O. 625-line system this was the first 625-line system, de ...