Patent ID: 7529406

Claim:
An image adjusting method for receiving a set of input signals comprising a test image transmitted from a video interface, which is used for receiving a plurality of sets of input signals, said image adjusting method being further used for automatically adjusting the set of input signals to generate a set of output signals, said method comprising the steps of: (a) generating a plurality of adjusting signals, according to a first original gray level value Gl, a second original gray level value Gh, a first changed gray level value gl, and a second changed gray level value gh, wherein the test image comprises a first region and a second region, the first region has the first original gray level value Gl and the second region has the second original gray level value Gh before the test image is transmitted via the video interface; the first region has the first changed gray level value gl and the second region has the second changed gray level value gh after the test image is transmitted via the video interface; (b) storing the plurality of adjusting signals; (c) according to the plurality of adjusting signals, transforming the set of input signals into a set of temporary signals; and (d) according to the plurality of adjusting signals, transforming the set of temporary signals into a set of output signals; wherein the set of input signals is adjusted by the following formulas: Gray ⁢ ⁢ Level ′ = [ Gray ⁢ ⁢ Level - Offset ⁢ ⁢ 3 - Gl ⁡ ( 1 - 1 Gain ) ] × Gain , ⁢ ⁢ Gain = Gh - Gl gh - gl , wherein “Gray level” represents an original gray level value of one of the input signals, “Gray level” represents an adjusted gray level value of one of the output signals, and Offset3 represents that the first changed gray level value gl minus the first original gray level value Gl.