CCIR System E is an
analog broadcast television system used in
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...
and
Monaco
Monaco (; ), officially the Principality of Monaco (french: Principauté de Monaco; Ligurian: ; oc, Principat de Mónegue), is a sovereign city-state and microstate on the French Riviera a few kilometres west of the Italian region of Lig ...
, associated with
monochrome
A monochrome or monochromatic image, object or palette is composed of one color (or values of one color). Images using only shades of grey are called grayscale (typically digital) or black-and-white (typically analog). In physics, monochrom ...
819-line
819-line was an analog monochrome TV system developed and used in France as television broadcast resumed after World War II. Transmissions started in 1949 and were active up to 1985, although limited to France, Belgium and Luxembourg. It is associa ...
high resolution broadcasts.
Transmissions started in 1949
and ended in 1985.
System E specifications
Some of the important specs are listed below.
[Reference Data for Radio Engineers, ITT Howard W.Sams Co., New York, 1977, section 30]
System E implementation provided very good (near
HDTV
High-definition television (HD or HDTV) describes a television system which provides a substantially higher image resolution than the previous generation of technologies. The term has been used since 1936; in more recent times, it refers to the g ...
) picture quality but with an uneconomical use of
bandwidth
Bandwidth commonly refers to:
* Bandwidth (signal processing) or ''analog bandwidth'', ''frequency bandwidth'', or ''radio bandwidth'', a measure of the width of a frequency range
* Bandwidth (computing), the rate of data transfer, bit rate or thr ...
. With the usual additions of
sound carrier and
vestigial sideband
In radio communications, single-sideband modulation (SSB) or single-sideband suppressed-carrier modulation (SSB-SC) is a type of modulation used to transmit information, such as an audio signal, by radio waves. A refinement of amplitude modul ...
the result was a combined signal that demanded approximately two to three times the bandwidth of more moderately specified standards, even when colour was added to them (as the
color subcarrier resides within the
Luma
Luma or LUMA may refer to:
Arts
* La Trobe University Museum of Art, Melbourne, Australia
* LUMA Projection Arts Festival, an annual event featuring building-scale projection mapping and light installations in Binghamton, NY
* LUMA Foundation, ...
signal space).
For this reason, France gradually abandoned it in favor of the
625-lines standard, implementing
System L with
SECAM
SECAM, also written SÉCAM (, ''Séquentiel de couleur à mémoire'', French for ''color sequential with memory''), is an analog color television system that was used in France, some parts of Europe and Africa, and Russia. It was one of th ...
color.
The final 819-line transmissions in Metropolitan France took place in
Paris
Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. S ...
, from the
Eiffel Tower
The Eiffel Tower ( ; french: links=yes, tour Eiffel ) is a wrought-iron lattice tower on the Champ de Mars in Paris, France. It is named after the engineer Gustave Eiffel, whose company designed and built the tower.
Locally nicknamed "'' ...
, on 19 July 1983.
TMC in Monaco were the last broadcasters to transmit 819-line television, closing down their System E transmitter in 1985.
Television channel
A television channel is a terrestrial frequency or virtual number over which a television station or television network is distributed. For example, in North America, "channel 2" refers to the terrestrial or cable band of 54 to 60 MHz, with ...
s were arranged as follows:
System F
CCIR System F was an adaptation of System E used in Belgium (1953, ''
RTB'') and Luxembourg (1955, ''
Télé Luxembourg''). With only half the vision bandwidth and approximately half the sound carrier offset, it allowed French 819-line programming to squeeze into the 7 MHz VHF broadcast channels used in those neighboring countries, albeit with a substantial loss of horizontal resolution. Use of System F was discontinued in Belgium in February 1968, and in Luxembourg in September 1971.
See also
*
Broadcast television systems
Broadcast television systems (or terrestrial television systems outside the US and Canada) are the encoding or formatting systems for the transmission and reception of terrestrial television signals.
Analog television systems were standardized by ...
*
Television transmitter
A television transmitter is a transmitter that is used for terrestrial (over-the-air) television broadcasting. It is an electronic device that radiates radio waves that carry a video signal representing moving images, along with a synchronized a ...
*
Transposer
In broadcasting, a transposer or translator is a device in or beyond the service area of a radio or television station transmitter that rebroadcasts signals to receivers which can’t properly receive the signals of the transmitter because of a p ...
Notes and references
External links
World Analogue Television Standards and Waveforms
{{Analogue TV transmitter topics
ITU-R recommendations
Television technology
E, System
F, System
Broadcast engineering
CCIR System