ppt

Compatible color TV formats, encoding and decoding

  • 2013-09-22
  • 1.6MB
  • Points it Requires : 2

4.1 Possibility of compatibility between black and white and color television 4.2 Compatible color television system 4.3 PAL color television encoding and decoding principle 4.4 Comb filter decoding principle 4.1.1 Relationship between brightness and three primary color signals; From the previous discussion, we can know that the brightness signal EY can be captured by a single camera tube, just like a black and white TV camera. However, the current color camera is usually composed of three camera tubes, which capture the color scene and obtain the three primary color electrical signals ER, EG, EB respectively, which reflect the change information of the brightness, hue and color saturation of each pixel of the scene. If the three primary color signals control the three electron beams of the picture tube respectively, then the brightness, hue and color saturation of the scene will be reproduced at the corresponding position of the color picture tube. The reproduced brightness conforms to the brightness equation.

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