Test patterns for motion-induced chromatic shift
First Claim
1. One or more computer-readable memory or storage devices storing computer-executable instructions for causing a processor, when programmed thereby, to perform test pattern evaluation comprising:
- determining a test pattern that is based at least in part on a base pattern of pixels, wherein the base pattern is a textured pattern of grayscale values, each of the pixels in the base pattern including multiple sub-pixel sample values; and
testing for motion-induced chromatic shift in a display device having sub-pixel display elements by successively rendering the test pattern for display on the display device, including moving the base pattern by a number of pixels between successive rendering operations for the test pattern to facilitate evaluation of whether the motion of the base pattern induces chromatic shift in areas of the grayscale values of the base pattern, wherein the motion-induced chromatic shift is shift in displayed color values away from correct color values.
1 Assignment
0 Petitions
Accused Products
Abstract
Display of a test pattern on a liquid crystal display (“LCD”) device or other display device can expose a problem with control logic that causes perceptible shifting in color values away from correct color values. For example, a test pattern evaluation tool determines a test pattern that is based at least in part on a base pattern of pixels. The test pattern evaluation tool successively renders the test pattern for display on a display device. In doing so, the test pattern evaluation tool offsets the base pattern by a number of pixels (e.g., shifting by one pixel horizontally) between successive rendering operations at the native refresh rate of the display device, which facilitates evaluation of whether chromatic shift is induced among at least some sub-pixel display elements of the display device.
30 Citations
23 Claims
-
1. One or more computer-readable memory or storage devices storing computer-executable instructions for causing a processor, when programmed thereby, to perform test pattern evaluation comprising:
-
determining a test pattern that is based at least in part on a base pattern of pixels, wherein the base pattern is a textured pattern of grayscale values, each of the pixels in the base pattern including multiple sub-pixel sample values; and testing for motion-induced chromatic shift in a display device having sub-pixel display elements by successively rendering the test pattern for display on the display device, including moving the base pattern by a number of pixels between successive rendering operations for the test pattern to facilitate evaluation of whether the motion of the base pattern induces chromatic shift in areas of the grayscale values of the base pattern, wherein the motion-induced chromatic shift is shift in displayed color values away from correct color values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method comprising:
-
determining a test pattern that is based at least in part on a base pattern of pixels, wherein the base pattern is a textured pattern of grayscale values, each of the pixels in the base pattern including multiple sub-pixel sample values; and testing for motion-induced chromatic shift in a display device by successively rendering the test pattern for display on the display device, including moving the base pattern by a number of pixels between successive rendering operations for the test pattern, the base pattern and the moving being configured to trigger the motion-induced chromatic shift in areas of the grayscale values of the base pattern in response to imbalances introduced by control logic in overdrive adjustments among sub-pixel display elements of the display device, wherein the motion-induced chromatic shift is shift in displayed color values away from correct color values. - View Dependent Claims (17, 18, 19, 20, 21)
-
-
22. A computer system comprising:
-
a liquid crystal display (“
LCD”
) device; andan evaluation tool comprising at least one processor configured to execute logic to; determine a test pattern that is based at least in part on a base pattern of pixels, wherein the base pattern is a textured pattern of grayscale values, each of the pixels in the base pattern including multiple sub-pixel sample values; and test for motion-induced chromatic shift in the LCD device by successively rendering the test pattern for display on the LCD device, including moving the base pattern by a number of pixels between successive rendering operations for the test pattern, the base pattern and shifting the moving being configured to trigger the motion-induced chromatic shift in areas of the grayscale values of the base pattern in response to imbalances in transition times among sub-pixel display elements of the LCD device, wherein the motion-induced chromatic shift is shift in displayed color values away from correct color values. - View Dependent Claims (23)
-
Specification