Systems and methods for generating an overdrive look-up table (LUT) for response time compensation of a display device
Systems and methods are provided for generating an overdrive look-up table (LUT) for response time compensation of a display device are described. In some embodiments, an Information Handling System (IHS) may include a controller and a memory coupled to the controller, the memory having program instructions stored thereon that, upon execution, cause the controller to generate a Look-up Table (LUT) of alternate grey levels selected to implement Response Time Compensation (RTC) in a Liquid Crystal Display (LCD), where at least one of the alternate grey levels is calculated, at least in part, by taking into account a frame rate of a video stream.
1. An Information Handling System (IHS), comprising:
a controller; and
a memory coupled to the controller, the memory having program instructions stored thereon that, upon execution, cause the controller to generate a Look-up Table (LUT) of alternate grey levels selected to implement Response Time Compensation (RTC) in a Liquid Crystal Display (LCD), wherein calculation of at least one of the alternate grey levels takes into account a frame rate of a video stream, and wherein to generate the LUT, the program instructions, upon execution, further cause the controller to:
set an offset margin value;
calculate the LUT using the offset margin value; and
at least one of:
(a) in response to application of the LUT meeting or exceeding a Grey Level Response Time (GLRT) target, record the LUT; or
(b) in response to application of the LUT not meeting the GLRT target, increment the offset margin value and recalculate the LUT using the incremented offset margin value.
2. IHS of claim 1 , wherein calculation of the at least one of the alternate grey levels takes into account a quantified measure of image motion artifacts.
3. The IHS of claim 1 , wherein to generate the LUT, the program instructions, upon execution, further cause the controller to use: (i) a numerical integration technique, or (ii) a definite integration technique.
4. The IHS of claim 1 , wherein to generate the LUT, the program instructions, upon execution, further cause the controller to calculate each grey-to-grey transition native response time.
5. The IHS of claim 1 , wherein to generate the LUT, the program instructions, upon execution, further cause the controller to calculate: (i) a luminance for each gray scale level, and (ii) an equivalent grey scale level at the end of a first frame following each grey-to-grey transition.
6. A memory storage device having program instructions stored thereon that, upon execution by a controller of a Liquid Crystal Display (LCD), cause the LCD to:
receive a video stream; and
generate a Look-up Table (LUT) of alternate grey levels selected to implement Response Time Compensation (RTC), wherein at least one of the alternate grey levels is calculated, at least in part, by taking into account a quantified measure of image motion artifacts, and wherein to generate the LUT, the program instructions, upon execution, further cause the LCD to:
set an offset margin value;
calculate the LUT using the offset margin value; and
at least one of:
(a) in response to application of the LUT meeting or exceeding a Grey Level Response Time (GLRT) target, record the LUT; or
(b) in response to application of the LUT not meeting the GLRT target, increment the offset margin value and recalculate the LUT using the incremented offset margin value.
7. The memory storage device of claim 6 , wherein calculation of the at least one of the alternate grey levels takes into account a frame rate of a video stream.
8. The memory storage device of claim 6 , wherein to generate the LUT, the program instructions, upon execution, further cause the controller to use: (i) a numerical integration technique, or (ii) a definite integration technique.
9. The memory storage device of claim 6 , wherein to generate the LUT, the program instructions, upon execution, further cause the controller to calculate each grey-to-grey transition native response time.
10. The memory storage device of claim 6 , wherein to generate the LUT, the program instructions, upon execution, further cause the controller to calculate: (i) a luminance for each gray scale level, and (ii) an equivalent grey scale level at the end of a first frame following each grey-to-grey transition.
11. In a Liquid Crystal Display (LCD), a method comprising:
receiving a video stream; and
generating a Look-up Table (LUT) of alternate grey levels selected to implement Response Time Compensation (RTC), wherein at least one of the alternate grey levels is calculated, at least in part, by taking into account: (i) a frame rate of a video stream, or (ii) a measure of image motion artifacts, and wherein the LUT is generated, at least in part, by: (i) setting an offset margin value; (ii) calculating the LUT using the offset margin value; and at least one of: (iii) in response to application of the LUT meeting or exceeding a Grey Level Response Time (GLRT) target, recording the LUT; or (iv) in response to application of the LUT not meeting the GLRT target, incrementing the offset margin value and recalculating the LUT using the incremented offset margin value.
12. The method of claim 11 , wherein the LUT is generated, at least in part, using: (i) a numerical integration technique, or (ii) a definite integration technique.
13. The method of claim 11 , wherein the LUT is generated, at least in part, by calculating each grey-to-grey transition native response time.
14. The method of claim 11 , wherein the LUT is generated, at least in part, by calculating: (i) a luminance for each gray scale level, and (ii) an equivalent grey scale level at the end of a first frame following each grey-to-grey transition.