Similar to sync-on-green, but combines sync with the luminance signal (Y) of a color system such as YPbPr.

Dot crawl can be greatly reduced by using a good comb filter in the receiver to separate the encoded chrominance signal from the luminance signal.

The luminance signal closely matched the existing black and white broadcasts, and would display properly on existing sets.

The signal was decoded by filtering out the color portion of the signal and sending the left-over luminance signal to all three tubes evenly.

The luminance (Y; grey-scale) signal and chrominance (C; color) information are carried on separate, synchronised signal and ground pairs.

In a color picture it supplies fine detail and brightness information (see also,luminance signal).

1 V limit is for luminance signal.

Like S-VHS, Hi8 used improved recorder electronics and media formulation to increase the recorded bandwidth of the luminance signal.

The timing of the luminance signal must allow for this.

In a monochrome receiver the luminance signal is amplified to drive the control grid in the electron gun of the CRT.