Systems and methods of reduced memory bandwidth compensation
First Claim
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1. A method for compensating an image produced by an emissive display system having pixels, each pixel having a light-emitting device, the method comprising:
- measuring characteristics of substantially all of the pixels generating the full measurement data for use in compensation of the display system;
storing the full measurement data in the memory;
retrieving characteristic measurement data from a memory only for a selected subset of pixels of the display;
interpolating the measurement data from the selected subset of pixels for generating full interpolated measurement data for each pixel of the display other than selected subset of pixels;
accessing an error table including interpolation correction data for problematic pixels in which a predicted pixel interpolation error exceeds a threshold, wherein the predicted pixel interpolation error is generated from a comparison of interpolated pixel data of said full interpolated measurement data with corresponding actual pixel data of the full measurement data; and
compensating the display with use of absolute measurement data, comprising the full interpolated measurement data and the interpolation correction data.
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Abstract
What is disclosed are systems and methods of compensation of images produced by active matrix light emitting diode device (AMOLED) and other emissive displays. Sub-sampling of pixel measurement data utilized in compensation of the display is utilized to reduce the data bandwidth between memory and a compensation module where the data is locally interpolated.
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Citations
18 Claims
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1. A method for compensating an image produced by an emissive display system having pixels, each pixel having a light-emitting device, the method comprising:
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measuring characteristics of substantially all of the pixels generating the full measurement data for use in compensation of the display system; storing the full measurement data in the memory; retrieving characteristic measurement data from a memory only for a selected subset of pixels of the display; interpolating the measurement data from the selected subset of pixels for generating full interpolated measurement data for each pixel of the display other than selected subset of pixels; accessing an error table including interpolation correction data for problematic pixels in which a predicted pixel interpolation error exceeds a threshold, wherein the predicted pixel interpolation error is generated from a comparison of interpolated pixel data of said full interpolated measurement data with corresponding actual pixel data of the full measurement data; and compensating the display with use of absolute measurement data, comprising the full interpolated measurement data and the interpolation correction data. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for compensating an image produced by an emissive display system having pixels, each pixel having a light-emitting device, the system comprising:
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a display comprising said pixels; a monitoring system coupled to said pixels of said display and for measuring characteristics of substantially all of said pixels generating full measurement data for use in compensation of the display; a memory for storing the full measurement data; an interpolation module capable of retrieving selected measurement data from only a selected subset of pixels of the display stored in the memory, and interpolating the selected measurement data generating full interpolated measurement data; a compensation module for compensating the display with use of the full resolution interpolated measurement data; and a sub-sampling module for determining the selected pixels of the display so as to reduce an error between the full interpolated resolution measurement data and the full resolution measurement data. - View Dependent Claims (8, 9, 10, 11)
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12. A method for compensating an image produced by an emissive display system having pixels, each pixel having a light-emitting device, the method comprising:
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retrieving characteristic measurement data from a memory only for a selected subset of pixels of the display; interpolating the measurement data from the selected subset of pixels for generating full interpolated measurement data for each pixel of the display other than selected subset of pixels; accessing an error table including interpolation correction data for problematic pixels in which a predicted pixel interpolation error exceeds a threshold, wherein the predicted pixel interpolation error is generated from a comparison of a corresponding interpolated pixel data of said interpolated measurement data with a corresponding actual pixel data of full measurement data; and compensating the display with use of absolute measurement data, comprising the full interpolated measurement data and the interpolation correction data. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification