TEA1002

The TEA1002 is a PAL video encoder chip[1] produced by Mullard in 1982 and used on the Mattel Aquarius computer, the AlphaTantel Prestel adapter and the Microvector 256 color graphics display interface for Nascom and Gemini computers.

[2][3][4][5][6] It was also used on teletext decoders and color bar generators associated with video test equipment.

There are three bits for the RGB components (generating 8 primary colors at full saturation but 75% luminance - similar to the EBU colour bars) and an inverter logic input bit that controls a variation of the base color (a 75% Luminance decrease for white; a 50% Chroma saturation decrease for all colors).

The following table lists the internal signals and shows an approximation of the generated colors, as seen on a web standard sRGB monitor.

An alternate configuration of the chip allows it to output 95% luminance color bars - similar to BBC colour bars, more suited for usage in teletext decoders.