The timing of the luminance signal must allow for this.
2.
To achieve this, the luminance signal must be low-pass filtered, dulling the image.
3.
The luminance signal carries horizontal and vertical sync pulses in the same way as a composite video signal.
4.
The luminance signal closely matched the existing black and white broadcasts, and would display properly on existing sets.
5.
Shifting the red and blue sensors half a pixel in both the vertical and horizontal direction permits the recovery of a 1920x1080 luminance signal.
6.
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.
7.
In any case, NTSC, PAL, and SECAM all have chrominance bandwidth ( horizontal colour detail ) reduced greatly compared to the luminance signal.
8.
With this corrected luminance signal, the correct colour rendition is obtained, whilst still retaining the sharp luminance detail of a 4-tube camera.
9.
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.
10.
These sideband frequencies are within the luminance signal band, which is why they are called " subcarrier " sidebands instead of simply " carrier " sidebands.
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