JPH03162191A - Rainbow color generating device - Google Patents

Abstract

PURPOSE:To generate a rainbow color in which a luminance component varies as well by providing a color control signal generation circuit to generate a color control signal by which a chrominance component and the luminance component are changed at the same time. CONSTITUTION:The color control signal generation circuit 1 is constituted by using a ROM manufactured so that the luminance component is changed continuously in accordance with each chrominance signal so as to correspond to the change of the values of B-Y, R-Y of the chrominance components or the ROM manufactured so that three chrominance signals of R, G, B are changed. By inputting the color control signal generated in this way, a chrominance signal variable circuit 2 generates the chrominance signals varying continuously, and outputs them to an output terminal 3. Thus, the luminance component can be changed together with the chrominance component, and yellow and blue can be made clear.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rainbow color generating device, and particularly to a rainbow color generating device in a television studio device. [Prior Art] Conventionally, this type of rainbow color generating device has been comprised of input terminals 11, 12, 13, a color signal variable circuit 14, and an output terminal 15, as shown in FIG. In the device configured in this way, hue (HUE) is input to the input terminal 11.
), saturation (SAT) is input to the input terminal 12, lightness (LUM) is input to the input terminal 13, and rainbow colors are generated at the output terminal 15 by making only the hue (HUE) variable.

[Problem to be solved by the invention]

The conventional rainbow color generator described above can change the color component, but cannot change the brightness component at the same time, so it can only output colors with constant brightness, and yellow and blue will not be vivid. There are drawbacks. [Means for Solving the Problems] A rainbow color generation device of the present invention includes a color control signal generation circuit that generates a color control signal that simultaneously changes a color component and a luminance component, and a color control signal generation circuit that inputs the color control signal and generates a color signal. It is equipped with a color signal variable circuit that continuously changes and outputs the color signal.

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the rainbow color generating device of the present invention. In FIG. 1, 1 is a color control signal generation circuit, 2 is a color signal variable circuit, and 3 is an output terminal. Next, the operation of the embodiment shown in FIG. 1 will be explained. As shown in FIG. 2, the color control signal generation circuit 1 generates the luminance components shown in FIG. ROM made to change continuously according to the R, G, B
By using a ROM etc. that is made to change the three color signals as shown in Figure 4, the ellipse can be improved. The color control signal created as described above is input, and the color signal variable circuit 2 generates a continuously changing color signal and outputs it to the output terminal 3. [Effects of the Invention] As explained above, the present invention generates rainbow colors in which the luminance component also changes by providing a color control signal generation circuit that generates a color control signal in which the color component and the luminance change together to some extent. There is an effect that can be done.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the rainbow color generating device of the present invention, FIG. 2 is a hue color component characteristic diagram, and FIG.
The figure is a color relative luminance characteristic diagram of the first color control signal in the embodiment of FIG. 1, FIG. 4 is a color relative color signal characteristic diagram of the second color control signal in the first embodiment, and FIG. FIG. 1 is a block diagram of a conventional rainbow color generating device. DESCRIPTION OF SYMBOLS 1... Color control signal generation circuit, 2, 14... Color signal variable circuit, 3, 15... Output terminal, 11-13... Input terminal.

Claims (1)

[Claims] A color control signal generating circuit that generates a color control signal that simultaneously changes a color component and a luminance component, and a color signal variable circuit that inputs the color control signal and outputs a color signal that changes continuously. A rainbow color generator featuring: