Patent ID: 9292942
Filing Date: 2016-03-22
CPC Classification: G06T,G09G

Claim Text:
1. An image signal compensation apparatus, comprising: a memory configured to store a lookup table (LUT) comprising reference data that corresponds to each combination of first reference gray levels and second reference gray levels; and a processor configured to receive a first image signal, a second image signal, and the reference data corresponding to the first image signal and the second image signal from the LUT, and to compensate the second image signal using the reference data, wherein the first reference gray levels and the second reference gray levels comprise normal gray levels and at least one shift gray level, the normal gray levels being arranged at a same interval, and the at least one shift gray level being arranged between neighboring normal gray levels, wherein a difference between the at least one shift gray level and a neighboring normal gray level of the neighboring normal gray levels is less than the same interval, wherein the reference data comprises first reference data and second reference data, wherein the first reference data corresponds to combination of the normal gray levels from the first reference gray levels and the second reference gray levels, and wherein the second reference data corresponds to combination of the at least one shift gray level and at least some of the normal gray levels from the first reference gray levels and the second reference gray levels.