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Some argued that France's primary motivation for Sikam's development was to protect French television equipment makers. [5] However, there was a contradiction with the unusual decision before accepting positive video modulation for French broadcasting signals. Previous systems were the only system on system and 819-line system to use positive video modulation. In addition, SECAM development forecasted flows. The NTSC was considered unsuccessful in Europe because its Titan issue needed additional control, which resolved SECAM and PAL. [Note 1] However, Sikam was partially developed due to national pride. Henry de France's personal charisma and ambition can be a contributing factor. Pallet was developed by a German company Telefuken and there was a lot of political resistance to exclude a French-developed system during the post-war era and accepting the German-modified one. [Citation needed]

Compared to some other manufacturers, where Sikam was discovered, Technikar (known as Thomson until 2010) still sells TV sets under various brands worldwide; This may be part of the SECAM's legacy for this reason. Thomson Pall bought telefuken company and today also helped RCA brand-RCA as the creator of NTSC. Thomson is also co-authored with ATSC standards used for American High-Definition Television.

SECAM's expansion
SECAC acceptance in Eastern Europe has been identified as political warfare. According to this explanation, the East German political authority was aware of the popularity of West Germany television and Sikam accepted instead of the Pal Encoding used in West Germany. It does not interfere with the reception of black and white, because the underlying TV standard was certainly essential in both parts of Germany. However, East Germans responded by purchasing PAL decoders for their Sikam sets. Eventually, the East Berlin Government "refuses to be reprinted through so-called Farensen", or "Isolation through Television" prevented so-called attention. Later on in the East German-produced TV sets, even the dual-standard PAL / Sikam decoder was included.

Another interpretation of the takeover of the Eastern Europeans led by the Soviet Union is that there was a long distribution line between the Russian broadcasting stations and transmitters. [6] Long co-axial wire or microwave links can be the reason for the width and phase change, which does not affect SECAM signals.

However, PAL and SECAM are the only color sub-carrier values, associated with the old values ​​for basic unit signals. The names of these monochrome values ​​are M, B / G, D / K, and L. See CCIR, OIRT and FCC (quality agency).

This signal color is much more important for compatibility than sub-carriers. They differ by relative frequencies between AM or FM sound modulation, signal polarization, channel, bandwidth etc. For example, a PAL D / TV set will be able to get a Sikam D / signal (though black and white), it will not be able to decode a PAL B / G signal. So even before Sikam came to Eastern European countries, most visitors (except East Germany and Yugoslavia) could not achieve Western programs. It means, with language problems, the exclusive reception in most countries has not created important problems for the authorities.

Technical details

A system G (band IV and V) spectrum with television channel PAL color subcarrier
Like other color standards adopted for the use of global broadcast, Sikam is a criterion that predicts its role in continuing to run existing television receivers as monitrom televisions. Due to the compatibility requirements, the color values ​​add the second signal to the basic monochrome signal, which carries color information. The color information is considered chrominas or the city is small, when the black-white data is called a loomin or Y is short. Monochrome television receivers display only illumination when color receiver processes both signals.

In addition, for compatibility, alone monocrrom signals need to be used bandwidth; Color signals were somehow inserted into the monochrome signal, without inserting it. This can be inserted because there is not a continuous spectrum of multiple TV signal (for most common video content), so there is space that can be used. This general lack of synthesis is the result of isolated nature of the signal, which is divided into frames and lines. (Strictly speaking, multiple video and full alphabets and issues and / or cameras allow multiple video to be used in full spectrum, so these color systems adjust the loom value in exchange for color sharing. These color signals are somewhat bad or color signals If absent, otherwise looks bad.) How analog color systems react to signal frequency The places used are differently different from those used differently