Transmission principle of color TV At the sending end, the captured one color image is decomposed into three primary color image signals, and then the three primary color signals are combined to a channel to the receiving end, and the received three primary color image signals are restored to the original color at the receiving end image. 1. Color image capture Figure 3-7 Decomposition and synthesis of color pictures The color separation optical system and three camera tubes can decompose a color image to be transmitted into three primary color images of red, green, and blue, thereby obtaining three primary color signal voltages R, G, and B.
Fahold family of 40-240W drivers provides leading edge technology for high efficiency, application flexibility and reliability in rugged environments. With their tunable outputs, this family is customizable for specific fixture and module applications. Universal's Everline LED Drivers can be configured to set their current output down to 50% of their maximum rated design level. This function is called tuning, or also, programmable LED drivers. Tuning provides the ability to set a tunable driver`s output current at levels lower than its full output rating. After a driver is tuned, it can still be dimmed to lower output currents with standard 0-10V controls. Tuning the driver based on the LED module used not only makes each fixture more efficient, it also increases the life of the LED module. Tuning assignments are stored in driver memory and are not lost when power is removed. Most factory produced drivers are tuned to maximum output unless otherwise noted on the label.
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The dichroic optical system includes an objective lens, a dichroic prism, a mirror, and so on. The camera principle of the three camera tubes is exactly the same as that of the black and white camera. They are responsible for capturing the three primary color signals of red, green and blue respectively. 