Patent ID: 8325238

Claim:
A test pattern signal generator for outputting a video signal adapted to display, on a display device, a test pattern of a color chart, the test pattern signal generator comprising: a color chart recording section configured to record color chart information of a standard for a first color gamut and color chart information of a standard for a second color gamut; and a test pattern signal generation section configured to generate, based on the information recorded in the color chart recording section, a video signal adapted to display test patterns in which the color charts according to the respective standards are arranged in a predetermined layout on a same screen of the display device, the standard for the first color gamut is a sRGB standard and the standard for the second color gamut is a xvYCC standard, in which a color chart of a test pattern for the xvYCC standard has a wider color range than that of the sRGB standard, and the test patterns are displayed in a matrix manner for each color on the same screen of the display device and include first, second and third regions, in which a color chart associated with the sRGB standard is displayed in the first region, a color chart associated with the xvYCC standard which is expanded in the positive direction of the sRGB standard is displayed in the second region, and a color chart associated with the xvYCC standard which is expanded in the negative direction of the sRGB standard is displayed in the third region.