Image display system and image display device

摘要

The present invention provides a technique for supplying appropriate image quality to a user. Upon executing an application, a PC1 outputs an automatic adjustment start signal s1 which is information relating to image quality required for the application, and on the basis of the automatic adjustment start signal s1, a display device 4 adjusts the image quality. Thus, it is possible to display an image with image quality suitable for each of the applications without causing any time-consuming manual operations by the user. Consequently, it is possible to provide appropriate image quality to the user.

主权项

1. An image display system comprising:
a computer configured to output a particular analog image signal for displaying a predetermined pattern in a particular frame, and subsequently output analog image signals corresponding to an executed application for displaying images in subsequent frames; and an image display device configured to display images corresponding to the application in the subsequent frames on the basis of said analog image signals corresponding to the application, the image display device further configured to display the predetermined pattern in the particular frame on the basis of the particular analog image signal, wherein said image display device includes:
an analog/digital converter which converts said analog image signals corresponding to the application to digital image signals corresponding to the application, after converting the particular analog image signal to a particular digital image signal;a display unit which displays the predetermined pattern in the particular frame on the basis of the particular digital image signal, and displays the images corresponding to the application in the subsequent frames on the basis of said digital image signals corresponding to the application; anda controller which carries out a gradation adjustment on the basis of the predetermined pattern by changing a signal level of the particular analog image signal or an analog input range in said analog/digital converter to make a range of signal levels of said predetermined analog image signal coincide with said analog input range, the gradation adjustment being completed before the images corresponding to the application are displayed in the subsequent frames, said particular image signal indicates the predetermined pattern to be displayed over a plurality of pixels for use in said gradation adjustment, and said computer also outputs information for instructing the start of said gradation adjustment to said controller, said information is provided to the image display device separate from the analog image signals corresponding to the application received by the image display device, upon receipt of said information, said controller makes a comparison between all the data of said particular digital image signal and a value included in a digital output range in said analog/digital converter, and carries out said gradation adjustment on the basis of the results of said comparison, and said images corresponding to the application in the subsequent frames are displayed in accordance with the gradation adjustment performed on the basis of the predetermined pattern, wherein the executed application is one of a plurality of applications installed in the computer, the computer outputting the same particular analog image signal regardless of whichever of the plurality of applications is executed.