Luminance

Luminous signal

Luminous signal
  1. What is luminous signal?
  2. What is luminance signal used for?
  3. How the luminance signal is generated?
  4. What is luminance in consumer electronics?

What is luminous signal?

The luminance signal can be obtained by adding together the signals representing the three primaries, R, G and B. However, the three voltages contributing the luminance signal must be taken in different amounts because the human eye responds to each of the three primaries differently.

What is luminance signal used for?

The color television signal that is intended to have exclusive control of the luminance of the picture. Also known as Y signal.

How the luminance signal is generated?

The luminance signal is formed by combining a proportion of 30% red, 59% green and 11% blue from the colour signal. This combined output becomes the luminance (brightness/ monochrome) signal. It is written as Y. In TV usually derived from the RGB signals originating from a camera or telecine, by a matrix or summation.

What is luminance in consumer electronics?

Luminance Information

As with NTSC, the luminance signal occupies the entire video bandwidth. PAL has several variations, depending on the video bandwidth and placement of the audio subcarrier. The composite video signal has a bandwidth of 4.2, 5.0, 5.5, or 6.0 MHz, depending on the specific PAL standard.

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