Patent ID: 11887549
Assignee: LX SEMICON CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 17:
18. The color gamut mapping device of claim 16, wherein the saturation controller is configured to:
when the saturation value of the first chrominance component is less than or equal to the first saturation control point, control the saturation of the first chrominance component by applying the first saturation gain to the first chrominance component;
when the saturation value of the first chrominance component is greater than the first saturation control point and is less than or equal to the second saturation control point, control the saturation of the first chrominance component by dividing the saturation value of the first chrominance component into a first saturation value and a second saturation value to respectively correspond to the first and second saturation control areas using the first saturation control point and by summing a value obtained by applying the first saturation gain to the first saturation value and a value obtained by applying the second saturation gain to the second saturation value;
when the saturation value of the first chrominance component is greater than the second saturation control point and is less than or equal to the third saturation control point, control the saturation of the first chrominance component by dividing the saturation value of the first chrominance component into a first saturation value, a second saturation value, and a third saturation value to respectively correspond to the first saturation control area, the second saturation control area, and the third saturation control area using the first and second saturation control points and by summing all of a value obtained by applying the first saturation gain to the first saturation value, a value obtained by applying the second saturation gain to the second saturation value, and a value obtained by applying the third saturation gain to the third saturation value; or
when the saturation value of the first chrominance component is greater than the third saturation control point, control the saturation of the first chrominance component by dividing the saturation value of the first chrominance component into a first saturation value, a second saturation value, a third saturation value, and a fourth saturation value to respectively correspond to the first saturation control area, the second saturation control area, the third saturation control area, and the fourth saturation control area using the first to third saturation control points and by summing all of a value obtained by applying the first saturation gain to the first saturation value, a value obtained by applying the second saturation gain to the second saturation value, a value obtained by applying the third saturation gain to the third saturation value, and a value obtained by applying the fourth saturation gain to the fourth saturation value.