Display apparatus and display apparatus control method

摘要

A display apparatus includes a liquid crystal display (LCD) panel and a backlight coupled to the LCD panel. The LCD apparatus is capable of being operated in a plurality of modes. The gradation values of the image data is adjusted in accordance with gradation ranges, each gradation range having an upper limit gradation value and a lower limit gradation value. The first converted image data is then scaled by applying a scaling factor, followed by adjustment of backlight brightness. The frame rate of the LCD apparatus is also adjusted to implement the operation mode.

主权项

1. A method of controlling a display apparatus, the method comprising:
determining a screen mode in which at least one among maximum brightness value, color temperature value and contrast ratio value is adjusted in accordance with surface reflectance, color temperature and contrast ratio of a physical paper; determining gradation ranges for operating the display apparatus in the screen mode, each gradation range having an upper limit gradation value and a lower limit gradation value; adjusting gradation values of an image data associated with each sub-pixel in a frame to generate a first converted image data for the frame, wherein the gradation values of the image data are adjusted to be within a range between the upper limit gradation value and the lower limit gradation value of the corresponding gradation range; adjusting gradation values of the first converted image data associated with each sub-pixel in the frame by a scaling factor; adjusting the brightness of a backlight by an inverse proportion of the scaling factor; and adjusting a frame rate of the display apparatus.