| 主权项 |
1. A gamma curve compensating circuit used in a display system, comprising:
an image generating circuit, generating an original output image signal according to an input image signal received by the display system; a grey-scale insertion determining circuit, determining a plurality of grey-scale luminance of a grey-scale image to be inserted according to the input image signal and outputting the grey-scale image; a multiplexer, having a first input terminal electrically coupled to the grey-scale insertion determining circuit and a second input terminal electrically coupled to the image generating circuit, and the multiplexer being used for providing an original display signal comprising the grey-scale image and the original output image signal; and a looking up and compensating circuit, electrically coupled to the multiplexer for receiving the original display signal, the looking up and compensating circuit providing a plurality of look-up tables, selecting a specific look-up table from the look-up tables according to the grey-scale luminance of the grey-scale image, and performing a gamma-curve compensating on the original display signal based on the specific look-up table; wherein, the grey-scale image comprises a plurality of divisions, each one of the divisions corresponds to one of the plurality of grey-scale luminance, and the grey-scale luminance of each one of the divisions is determined according to the grey-scale luminance of another adjacent division of the plurality of divisions. |
