Data processing method and display apparatus for performing the same
View Patent ↗A data processing method compensates a color of input data for a present frame of a display panel of a display apparatus to generate color compensating data. Dimming levels of a plurality of light emitting blocks included in a light source module for the display panel are determined using the color compensating data. Compensating data of the present frame is generated using the color compensating data and compensating coefficient data including the dimming levels.
1. A data processing method comprising:
compensating a color of input data of a present frame for a display panel of a display apparatus to generate color compensating data;
determining dimming levels of a plurality of light emitting blocks included in a light source module for the display panel using the color compensating data; and
generating compensating data for the present frame using the color compensating data, and compensating coefficient data including the dimming levels and a duty ratio of the light emitting blocks,
wherein the input data is m-bit data, the color compensating data is n-bit data, m and n are natural numbers, and n is greater than m, and
wherein determining the dimming levels comprises determining the dimming levels using upper k-bits of the n-bit color compensating data, wherein k is a natural number less than n and equal to or greater than m.
2. The method of claim 1 , wherein generating the compensating data comprises:
receiving the n-bit color compensating data and the compensating coefficient data; and
generating t-bit sub compensating data using the n-bit color compensating data and the compensating coefficient data, wherein, t is a natural number and greater than n.
3. The method of claim 2 , wherein the compensating coefficient data comprises a luminance coefficient corresponding to the dimming levels and the light emitting blocks.
4. The method of claim 2 , wherein generating the compensating data comprises: dithering the t-bit sub compensating data to generate the m-bit compensating data.
5. The method of claim 2 , further comprising: comparing the m-bit compensating data of the present frame with frame compensating data of a previous frame to generate frame compensating data of the present frame.
6. The data processing method of claim 1 , wherein a pulse width modulation calculator determines the dimming levels.
7. A display apparatus comprising:
a display panel including a plurality of pixels;
a light source module including a plurality of light emitting blocks and providing the display panel with light;
a color compensator compensating a color of input data of a present frame for the display panel to generate color compensating data;
a pulse width modulation (PWM) calculator determining dimming levels of the light emitting blocks using the color compensating data; and
a pixel compensator generating compensating data of the present frame using the color compensating data, and compensating coefficient data including the dimming levels and a duty of the light emitting blocks,
wherein the input data is m-bit data, the color compensating data is n-bit data, m and n are natural numbers, and n is greater than m, and
wherein the PWM calculator determines the dimming levels using upper k-bits of the n-bit color compensating data, wherein k is a natural number less than n and equal to or greater than m.
8. The display apparatus of claim 7 , further comprising: a light source driver driving the light emitting blocks using the dimming levels.
9. The display apparatus of claim 7 , wherein the PWM calculator generates the compensating coefficient data including a luminance coefficient corresponding to the dimming levels and the light emitting blocks.
10. The display apparatus of claim 7 , wherein the pixel compensator generates t-bit sub compensating data using the n-bit color compensating data received from the color compensator and the compensating coefficient data received from the PWM calculator, wherein t is a natural number and greater than n.
11. The display apparatus of claim 10 , further comprising: a dithering unit dithering the t-bit sub compensating data to generate m-bit compensating data.
12. The display apparatus of claim 10 , further comprising:
a dithering unit dithering the t-bit sub compensating data to generate m-bit compensating data for the present frame; and
a frame compensator comparing the m-bit compensating data for the present frame with frame compensating data of a previous frame to generate frame compensating data of the present frame.
13. The display apparatus of claim 12 , wherein the frame compensator comprises a memory storing the frame compensating data of the previous frame.
14. The display apparatus of claim 7 , wherein the color compensator, the PWM calculator and the pixel compensator are integrally formed in one driving chip.
15. The display apparatus of claim 7 , wherein the light source module comprises:
a light guiding plate disposed on a rear surface of the display panel; and
a light emitting module disposed adjacent a longest side of the light guiding plate, and including the light emitting blocks arranged in a line.
16. The display apparatus of claim 7 , wherein the light source module comprises:
a light guiding plate disposed on a rear surface of the display panel; and
a light emitting module disposed adjacent a shortest side of the light guiding plate, and including the light emitting blocks arranged in a line.
17. The display apparatus of claim 7 , wherein the light source module is disposed on a rear surface of the display panel, and includes the light emitting blocks arranged in a plurality of lines.