Generating corrected gray scale data to improve display quality
View Patent ↗A method of displaying image data, which can mitigate a double-boundary problem and improve MPRT, includes the steps of: receiving a plurality of frame data of a pixel; correcting subframe data of two of the plurality frame data; and sequentially displaying each of the subframe data of the plurality frame data.
1. A circuit to drive signals in a display device, comprising:
an image signal generator to generate a first frame signal and a second frame signal in successive time periods;
a frame buffer register for storing the first frame signal;
a first look-up table, electrically coupled to the frame buffer register, to generate a first over-drive voltage and a second over-drive voltage according to the first frame signal and the second frame signal, respectively;
a comparator, electrically coupled to the first look-up table, to compare the first over-drive voltage with the second over-drive voltage to determine whether the first over-drive voltage and the second over-drive voltage are substantially the same; and
a look-up data structure, electrically coupled to the comparator, to respectively determine a corrected first over-drive voltage corresponding to the first over-drive voltage and a corrected second over-drive voltage corresponding to the second over-drive voltage according to a result of the comparison by the comparator.
2. The circuit according to claim 1 , wherein the look-up data structure comprises a second look-up table and a third look-up table, wherein the second look-up table is to produce the corrected first over-drive voltage, and wherein the third look-up table is to produce the corrected second over-drive voltage.
3. The circuit according to claim 1 , wherein the comparator is to determine whether the first and second over-drive voltages are substantially the same by determining whether the first and second over-drive voltages are within a predefined threshold.
4. The circuit according to claim 3 , wherein production of the corrected first over-drive voltage and the corrected second over-drive voltage is performed in response to the comparison result indicating that the first and second over-drive voltages are within the predefined threshold.
5. The circuit according to claim 4 , wherein production of the corrected first over-drive voltage and the corrected second over-drive voltage is bypassed in response to the comparison result indicating that the first and second over-drive voltages are not within the predefined threshold.
6. A display apparatus comprising:
a liquid crystal display panel;
a backlight module; and
a timing controller comprising a circuit to drive signals in a display device, the circuit comprising:
an image signal generator to generate a first frame signal and a second frame signal in successive time periods;
a frame buffer register for storing the first frame signal;
a first look-up table, electrically coupled to the frame buffer register, to generate a first over-drive voltage and a second over-drive voltage according to the first frame signal and the second frame signal, respectively;
a comparator, electrically coupled to the first look-up table, to compare the first over-drive voltage with the second over-drive voltage to determine whether the first over-drive voltage and the second over-drive voltage are substantially the same; and
a look-up data structure, electrically coupled to the comparator, to respectively determine a corrected first over-drive voltage corresponding to the first over-drive voltage and a corrected second over-drive voltage corresponding to the second over-drive voltage according to a result of the comparison by the comparator.
7. The display apparatus according to claim 6 , wherein the look-up data structure comprises a second look-up table and a third look-up table, wherein the second look-up table is to produce the corrected first over-drive voltage, and wherein the third look-up table is to produce the corrected second over-drive voltage.
8. The display apparatus according to claim 6 , wherein the comparator is to determine whether the first and second over-drive voltages are substantially the same by determining whether the first and second over-drive voltages are within a predefined threshold.
9. The display apparatus according to claim 8 , wherein production of the corrected first over-drive voltage and the corrected second over-drive voltage is performed in response to the comparison result indicating that the first and second over-drive voltages are within the predefined threshold.
10. The display apparatus according to claim 9 , wherein production of the corrected first over-drive voltage and the corrected second over-drive voltage is bypassed in response to the comparison result indicating that the first and second over-drive voltages are not within the predefined threshold.
11. A method of driving signals in a display device, comprising:
generating, by an image signal generator, a first frame signal and a second frame signal in successive time periods;
storing, by a frame buffer register, the first frame signal;
generating, by a first look-up table, a first over-drive voltage and a second over-drive voltage according to the first frame signal and the second frame signal, respectively;
comparing, by a comparator, the first over-drive voltage with the second over-drive voltage to determine whether the first over-drive voltage and the second over-drive voltage are substantially the same; and
determining, by a look-up data structure, a corrected first over-drive voltage corresponding to the first over-drive voltage and a corrected second over-drive voltage corresponding to the second over-drive voltage according to a result of the comparison by the comparator.
12. The method according to claim 11 , wherein the look-up data structure comprises a second look-up table and a third look-up table, wherein the second look-up table produces the corrected first over-drive voltage, and wherein the third look-up table produces the corrected second over-drive voltage.
13. The method according to claim 11 , wherein the comparator determines whether the first and second over-drive voltages are substantially the same by determining whether the first and second over-drive voltages are within a predefined threshold.
14. The method according to claim 13 , wherein production of the corrected first over-drive voltage and the corrected second over-drive voltage is performed in response to the comparison result indicating that the first and second over-drive voltages are within the predefined threshold.
15. The method according to claim 14 , wherein production of the corrected first over-drive voltage and the corrected second over-drive voltage is bypassed in response to the comparison result indicating that the first and second over-drive voltages are not within the predefined threshold.