Image display system and method of driving the same

Abstract

An image display system includes a camera part and an image display part. The image display part includes a user analyzer, a gamma corrector, a gamma voltage generator, and a display panel. The camera part takes a picture of a user and generates a user image signal. The user analyzer calculates the user's viewing direction based on the user image signal. The gamma corrector generates a correction gamma value based on the viewing direction. The gamma voltage generator generates a gamma voltage based on the correction gamma value, and the display panel displays an image corresponding to the gamma voltage. Accordingly, the image display system provides the image having an optimized gamma curve to the user in real time even without a separate input from the user.

What is claimed is: 
     
         1 . An image display system comprising:
 a camera part configured to take a picture of a user and configured to generate a user image signal;   a user analyzer configured to receive the user image signal and configured to calculate a viewing direction and a viewing distance of the user based on the user image signal;   a gamma corrector configured to generate a correction gamma value based on the viewing direction and the viewing distance;   a gamma voltage generator configured to generate a gamma voltage based on the correction gamma value;   a display panel configured to display an image corresponding to the gamma voltage; and   a speaker module configured to output a sound synchronized with the image.   
     
     
         2 . The image display system of  claim 1 , wherein the user analyzer comprises:
 a facial recognizer configured to receive the user image signal and configured to recognize a face of the user; and   a viewing distance calculator configured to calculates the viewing distance based on a size of the face; and   a viewing direction calculator configured to calculate the viewing direction of the user based on the viewing distance and a position of the face.   
     
     
         3 . The image display system of  claim 1 , wherein the speaker module comprises:
 a sound corrector configured to receive sound data and generate corrected sound data based on the viewing distance and the viewing direction; and   a speaker configured to receive the corrected sound data and configured to output the sound.   
     
     
         4 . The image display system of  claim 3 , wherein the sound corrector is configured to correct an output level and an output timing of the sound data and configured to generate the corrected sound data. 
     
     
         5 . An image display system comprising:
 a camera part configured to take a picture of a user and configured to generate a user image signal;   a user analyzer configured to receive the user image signal and configured to calculate a viewing direction of the user based on the user image signal;   a timing controller configured to receive image data and correct the image data based on the viewing direction; and   a display panel configured to display an image corresponding to the corrected image data.   
     
     
         6 . The image display system of  claim 5 , further comprising a look-up table configured to store a correction data value corresponding to the viewing direction. 
     
     
         7 . A method of driving an image display system, the method comprising:
 taking a picture of a user and generating a user image signal;   calculating a viewing direction of the user based on the user image signal;   correcting image data based on the viewing direction of the user; and   displaying an image corresponding to the corrected image data,   
     
     
         8 . An image display system comprising:
 a camera configured to generate an image signal of a user;   a user analyzer configured to generate positional information of the user from the image signal; and   a gamma corrector configured to correct a first gamma value into a second gamma value corresponding to the positional information.   
     
     
         9 . The image display system of  claim 8 , further comprising a speaker module configured to output a sound whose magnitude corresponds to the positional information. 
     
     
         10 . The image display system of  claim 8 , further comprising a light source controller configured to adjust brightness of a light source according to the positional information. 
     
     
         11 . The image display system of  claim 8 , further comprising a data corrector configured to change a data format of an image corresponding to the image signal of the user into another data format.