Systems and methods of reduced memory bandwidth compensation
First Claim
Patent Images
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 a plurality of pixels generating measurement data for use in compensation of the display;
storing the measurement data in a memory;
retrieving partial resolution measurement data from the measurement data stored in the memory, the partial resolution measurement data comprises measurement data only for a selected subset of pixels of the display;
interpolating the measurement data generating full resolution interpolated measurement data;
wherein for each pixel of the display other than pixels of said selected subset of pixels of the display;
predicting a corresponding interpolated pixel data portion of said full resolution interpolated measurement data;
comparing said corresponding interpolated pixel data portion with a corresponding pixel data portion of said full resolution measurement data generating a predicted pixel interpolation error, andfor pixels where said predicted pixel interpolation error exceeds a threshold, storing interpolation correction data for said pixels in an error table, and performing said generation of said full resolution interpolated measurement data comprises determining absolute measurement data for said pixels with use of said interpolation correction data; and
compensating the display with use of the full resolution interpolated measurement data.
2 Assignments
0 Petitions
Accused Products
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.
581 Citations
20 Claims
-
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 a plurality of pixels generating measurement data for use in compensation of the display; storing the measurement data in a memory; retrieving partial resolution measurement data from the measurement data stored in the memory, the partial resolution measurement data comprises measurement data only for a selected subset of pixels of the display; interpolating the measurement data generating full resolution interpolated measurement data;
wherein for each pixel of the display other than pixels of said selected subset of pixels of the display;predicting a corresponding interpolated pixel data portion of said full resolution interpolated measurement data; comparing said corresponding interpolated pixel data portion with a corresponding pixel data portion of said full resolution measurement data generating a predicted pixel interpolation error, and for pixels where said predicted pixel interpolation error exceeds a threshold, storing interpolation correction data for said pixels in an error table, and performing said generation of said full resolution interpolated measurement data comprises determining absolute measurement data for said pixels with use of said interpolation correction data; and compensating the display with use of the full resolution interpolated measurement data. - View Dependent Claims (2, 3, 4, 5)
-
-
6. 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 a plurality of pixels generating measurement data for use in compensation of the display; storing the measurement data in a memory; retrieving partial resolution measurement data from the measurement data stored in the memory; interpolating the measurement data generating full resolution interpolated measurement data; and compensating the display with use of the full resolution interpolated measurement data, wherein measuring characteristics of a plurality of pixels generating measurement data comprises generating low spatial frequency measurement data and high spatial frequency measurement data, wherein storing the measurement data in the memory comprises storing the low spatial frequency measurement data and high spatial frequency measurement data in the memory, wherein retrieving partial resolution measurement data from the measurement data stored in the memory comprises retrieving low spatial frequency partial resolution measurement data from the low spatial frequency measurement data stored in the memory and retrieving high spatial frequency partial resolution measurement data from the high spatial frequency measurement data stored in the memory, and wherein interpolating the measurement data generating full resolution interpolated measurement data comprises interpolating the low spatial frequency measurement data and interpolating the high spatial frequency measurement data and combining the interpolated low spatial frequency measurement data and the interpolated high spatial frequency measurement data together generating full resolution interpolated measurement data. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A system for compensating an image produced by an emissive display system having pixels, each pixel having a light-emitting device, the system comprising:
-
a display comprising said pixels; a monitoring system coupled to said pixels of said display and for measuring characteristics of a plurality of said pixels generating measurement data for use in compensation of the display; a memory for storing the measurement data; an interpolation module for retrieving partial resolution measurement data from the measurement data stored in the memory and interpolating the measurement data generating full resolution interpolated measurement data, wherein the partial resolution measurement data comprises measurement data only for a selected subset of pixels of the display; and a compensation module for compensating the display with use of the full resolution interpolated measurement data; wherein the interpolation module is further for, for each pixel of the display other than pixels of said selected subset of pixels of the display;
predicting a corresponding interpolated pixel data portion of said full resolution interpolated measurement data;
comparing said corresponding interpolated pixel data portion with a corresponding pixel data portion of said full resolution measurement data generating a predicted pixel interpolation error; andfor pixels where said predicted pixel interpolation error exceeds a threshold, for storing interpolation correction data for said pixel in an error table and performing said generation of said full resolution interpolated measurement data comprises determining absolute measurement data for said pixel with use of said interpolation correction data. - View Dependent Claims (12, 13, 14, 15)
-
-
16. A system for compensating an image produced by an emissive display system having pixels, each pixel having a light-emitting device, the system comprising:
-
a display comprising said pixels; a monitoring system coupled to said pixels of said display and for measuring characteristics of a plurality of said pixels generating measurement data for use in compensation of the display; a memory for storing the measurement data; an interpolation module for retrieving partial resolution measurement data from the measurement data stored in the memory and interpolating the measurement data generating full resolution interpolated measurement data; and a compensation module for compensating the display with use of the full resolution interpolated measurement data; wherein measuring characteristics of a plurality of pixels generating measurement data comprises generating low spatial frequency measurement data and high spatial frequency measurement data, wherein storing the measurement data in the memory comprises storing the low spatial frequency measurement data and high spatial frequency measurement data in the memory, wherein retrieving partial resolution measurement data from the measurement data stored in the memory comprises retrieving low spatial frequency partial resolution measurement data from the low spatial frequency measurement data stored in the memory and retrieving high spatial frequency partial resolution measurement data from the high spatial frequency measurement data stored in the memory, and wherein interpolating the measurement data generating full resolution interpolated measurement data comprises interpolating the low spatial frequency measurement data and interpolating the high spatial frequency measurement data and combining the interpolated low spatial frequency measurement data and the interpolated high spatial frequency measurement data together generating full resolution interpolated measurement data. - View Dependent Claims (17, 18, 19, 20)
-
Specification