Color signal generating device

摘要

An object of the present invention is to provide a color signal generating device where the size of the operational circuit is small and the speed of signal processing is fast. The color signal generating device for converting signals from a first color signal for forming a number of input pixels to a second color signal for forming a number of output pixels is provided with: a signal gradient detecting means for detecting a gradient of color signals in a reference pixel within the number of input pixels; a signal distributing means for comparing the first color signal for the reference pixel where the gradient is detected and the second color signal for the reference pixel of the number of output pixels corresponding to the reference pixel and stored in advance in the case where the gradient is detected, and distributing a color signal to a periphery pixel adjacent to the reference pixel having the second color signal in the case where the first color signal has a color which the second color signal does not; and a signal modifying means for converting the first color signal for forming a number of input pixels to a second color signal on the basis of the distributed color signal.

主权项

1. A color signal generating device for converting signals from a first color signal for forming a number of input pixels representing a combination of colors to be displayed on a position of each pixel of a display device to a second color signal for forming a number of output pixels driving the display device, comprising:
storage for storing information of a combination of colors of sub-pixels included in said each pixel of the display device, a detector circuit for detecting a difference of signal values of colors of the first color signal, displayed on two adjacent pixels which are adjacent across a reference pixel, wherein a first one of the adjacent pixel has a higher signal value and a second one of the adjacent pixel has a lower signal value, and a distributor circuit for distributing a signal value of a color for the reference pixel, wherein the combination of the colors of the sub-pixels of the reference pixel does not have a first color of the first color signal, wherein said first color is in the combination of the colors of the sub-pixels of each of the two adjacent pixels and is displayed on the two adjacent pixels using the second color signal, wherein a value added to said higher signal value of the first one of the adjacent pixels is more than a value added to said lower signal value of the second one of the adjacent pixels; and wherein the value added to the higher signal value of the first one of the adjacent pixels and the value added to said lower signal value of the second one of the adjacent pixels add up to total a signal value of the reference pixel.