Patent ID: 8736631

Claim:
A facility operation display device having a display unit that displays information related to facilities to be operated, comprising: an interface that receives commands for the facilities; a converter for converting a first palette value corresponding to the color information of respective pixels in an image displayed by the display unit into a second palette value corresponding to the color information of respective pixels in an image displayed by the display unit in response to commands input into the interface; a display controller for determining the color information on the basis of the second palette value, and controlling the display unit so as to display the image composed of pixels with the determined color information; and one or a plurality of conversion tables that indicate correspondences between the first palette value and the second palette value, wherein the converter converts the first palette value into the second palette value by referencing the one or plurality of conversion tables, wherein the converter includes a buffer that stores at least a part of the conversion tables, and wherein the first palette value is converted into the second palette value on the basis of information stored in the buffer in the case where information related to the second palette value corresponding to the first palette value is being stored in the buffer.