Editing SCART (section)

=== Non-standard extensions ===
[[File:SCART gold plate peritel.jpg|thumb|RGB-capable SCART ([[gold plated]])]]
[[File:Fake-scart-brkn.jpg|thumb|Non-RGB SCART male connector. Only 10 pins (2, 6, 7, 8, 11, 15, 16, 17, 18, 20) are available. Some cheap cables or devices (DVD players, TVs) have a 21-pin SCART connector or socket that actually have 10 wires connected and are thus not RGB / S-Video capable, but only [[CVBS]].]]

The use of the data pins was not standardised in the original SCART specification, resulting in the use of several different protocols, both proprietary protocols and semi-proprietary protocols based on standards such as [[D²B]].

Some of the most creative usages appeared in analogue satellite receivers. The function of decoding hybrid, time-compressed analogue-digital MAC transmissions into RGB and analogue audio was akin to making a digital receiver out of an analogue one. The D²B pins (10 and 12) were used for communicating with [[satellite dish]] positioners and for driving magnetic [[polarizer|polarisers]], before these became incorporated into [[Low-noise block converter|LNB]]s. The daisy-chaining features were used to connect both a Pay TV decoder and a dish positioner/polariser to a single ''Decoder'' socket on the receiver.<ref>Based on a [[Pace Micro Technology]] Prima analogue receiver manual and a DATCOM AP-500/AP-700 dish positioner manual.</ref>

CENELEC EN 50157-1 introduced [[AV.link]] as a standardised protocol to carry advanced control information between devices. It is a single-wire serial data [[Bus (computing)|bus]] and allows carrying remote control information and to negotiate analogue signal types (e.g. RGB). AV.link is also known as nexTViewLink or trade names such as SmartLink, Q-Link or EasyLink. It appears as the [[Consumer Electronics Control]] channel in HDMI.

The data pins, 10, 12, 14, were used by some manufacturers for [[Dolby Pro Logic]], surround and multichannel on their TV sets (some high end models with built in Dolby decoders, and external surround speakers, both CRT, LCD and  plasma sets, and only in Europe - and European versions of Japanese TV Sets and DVD players -, and mainly on S/PDIF), in order to connect a DVD player to the TV set and stream the Dolby and DTS to the surround of the TV set {{Citation needed|date=April 2023}}. However, this protocol was rarely used, as it was limited only to a certain manufacturer, and the connections were different from a manufacturer to another, and in some cases, it was only commanded by the pin 8. In this case, it was unusable with RCA to SCART adapters. Also, if a Compatible TV with such connection and a compatible DVD with such connection, but from different manufacturers were interconnected, the surround might not work, and only the stereo sound from the DVD player was available to the TV, because some manufacturers did not use SPDIF, but an own protocol. Also, this connection might be also lost, if the connection of the DVD with the TV was made indirectly (through a VCR in daisy chaining mode, for example), however, some VCR allowed the pass-through of these signals. Some DVD player manufacturers on some models offered SPDIF only on SCART, and an adapter in order to extract the digital audio signal to send it to a home cinema. To the present day this connection remains rare, as HDMI, S/PDIF, and TOSLINK can provide multichannel audio, also some TV sets with Surround built in may have an Optical or S/PDIF INPUT, beside Output {{Citation needed|date=April 2023}}.