Image display apparatus and operating method thereof

An image display apparatus comprising:

• a generator to generate a thumbnail image based on an input signal;
• a detector to detect an error in the thumbnail image;
• and
• a display to display the thumbnail image if no error is detected in the thumbnail image.

An operating method of an image display apparatus, comprising:

• generating a thumbnail image based on an input signal;
• detecting an error in the thumbnail image;
• and
• if an error is detected in the thumbnail image, displaying the thumbnail image on a display or acquiring a new thumbnail image.

A method of operating an image display apparatus comprising:

• generating a thumbnail image based on an input signal;
• displaying the thumbnail image;
• determining whether an error exists for the input signal;
• and
• if no error exists, updating the thumbnail image based on the input signal.

An image display apparatus comprising:

• a generator to generate a thumbnail image based on an input signal;
• a display to display the thumbnail image;
• and
• a detector to detect whether an error exists for the input signal,
• wherein the thumbnail image is updated based on the input signal if no error is detected.