View source for A-MAC

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[[Image:PAL and D2-MAC Transmission.png|thumb|300px|The simultaneous [[PAL]] transmission of all TV-picture elements and the multiplexed transmission of the TV picture elements with D2-MAC.]]
[[Image:Multiplexed Analogue Components transmission (simulation).jpg|thumb|300px|Simulated MAC signal. From left to right: digital data, chrominance and luminance]]
In [[television]] [[electronics]], '''A-MAC''' carries digital information: sound, and data-teletext on an [[Subcarrier multiplexing|FM subcarrier]] at 7&nbsp;MHz. Since the vision bandwidth of a standard MAC signal is 8.4&nbsp;MHz, the horizontal resolution on A-MAC has to be reduced to make room for the 7&nbsp;MHz carrier. ''A-MAC has not been used in service.''
== Technical details ==
MAC transmits luminance and chrominance data separately in time rather than separately in frequency (as other analog television formats do, such as composite video).
Audio and Scrambling (selective access)
* Audio, in a format similar to [[NICAM]] was transmitted digitally rather than as an FM subcarrier.
* The MAC standard included a standard scrambling system, EuroCrypt, a precursor to the standard DVB-CSA encryption system.
==TV transmission systems==
* [[Analog high-definition television system|Analog high-definition television systems]]
* [[PAL]], what MAC technology tried to replace
* [[SECAM]], what MAC technology tried to replace
* A-MAC
* [[B-MAC]]
* [[C-MAC]]
* [[D-MAC]]
* [[C-MAC#C-MAC variants : E-MAC|E-MAC]]
* [[S-MAC]]
* [[D2-MAC]]
* [[HD-MAC]], an early high-definition television standard allowing for 2048x1152 resolution.
* [[DVB-S]], MAC technology was replaced by this standard
* [[DVB-T]], MAC technology was replaced by this standard
==External links==
* [http://www.stjarnhimlen.se/tv/tv.html#MAC Multiplexed Analogue Components] in "Analog TV Broadcast Systems" by Paul Schlyter
[[Category:Video formats]]
[[Category:Television technology]]
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