| 摘要 |
<p>A display device suitably used when a screen is divided into a plurality of areas and display comprising images having different image qualities in divided areas is effected, a marker signal forming method, a marker signal detection circuit and a control signal generation circuit. A predetermined signal pattern serving as a marker signal is provided to an image signal in an arbitrary designated area. The marker signals are disposed at both end portions in a horizontal direction in such a manner as to continue in a vertical direction, for example. The display device detects an area by detecting a marker signal and controls sharpness, contract, etc., for each detected area. In this way, image quality of the images such as a photo, a moving image, etc., can be improved without making information such as characters, numerals etc., more difficult to watch. <IMAGE></p> |
