Method of estimating heat distribution of image display unit, device for estimating heat distribution of image display unit, image display device, electronic apparatus including image display device, and program for performing method of estimating heat distribution of image display unit

A control circuit comprising:

• memory configured to store a first heat distribution table of an image display unit;
• and
• processing circuitry configured to
• calculate an average electrical current value of a pixel area in a display surface based on image data, the pixel area including at least one pixel in the image display unit, the image display unit including a plurality of pixels arranged therein,
• calculate heat generation amount data by multiplying the average electrical current value with a predetermined electrical current-heat conversion coefficient to convert the average electrical current value into a value corresponding to an amount of heat generation,
• add the heat generation amount data to a value of the first heat distribution table stored in the memory to update the first heat distribution table,
• generate a new first heat distribution table of the image display unit by
• processing the first heat distribution table that is updated with a two-dimensional low pass filter process, and
• multiplying, at every predetermined period, a value of the first heat distribution table that is processed with a predetermined heat dissipation coefficient and
• generate at least one of a corrected brightness signal or a corrected image signal based at least in part on the new first heat distribution table, wherein the at least one of the corrected brightness signal or the corrected image signal reduces a screen burn-in of the image display unit.

An image display device comprising:

• an image display unit including a plurality of pixels;
• and
• a control circuit including
• a memory configured to store a first heat distribution table of the image display unit, and
• processing circuitry configured to
• calculate an average electrical current value of a pixel area in a display surface based on image data, the pixel area including at least one pixel of the plurality of pixels of the image display unit,
• calculate heat generation amount data by multiplying the average electrical current value with a predetermined electrical current-heat conversion coefficient to convert the average electrical current value into a value corresponding to an amount of heat generation,
• add the heat generation amount data to a value of the first heat distribution table stored in the memory to update the first heat distribution table,
• generate a new first heat distribution table of the image display unit by
• processing the first heat distribution table that is updated with a two-dimensional low pass filter process, and
• multiplying, at every predetermined period, a value of the first heat distribution table that is processed with a predetermined heat dissipation coefficient, and
• generate at least one of a corrected brightness signal or a corrected image signal based at least in part on the new first heat distribution table, wherein the at least one of the corrected brightness signal or the corrected image signal reduces a screen burn-in of the image display unit.

An electronic apparatus comprising:

• an image display device including
• an image display unit including a plurality of pixels, and
• a control circuit including
• a memory configured to store a first heat distribution table of the image display unit, and
• processing circuitry configured to
• determine an average electrical current value of a pixel area in a display surface, the pixel area including at least one pixel of the plurality of pixels of the image display unit,
• calculate heat generation amount data by multiplying the average electrical current value with a predetermined electrical current-heat conversion coefficient to convert the average electrical current value into a value corresponding to an amount of heat generation,
• add the heat generation amount data to a value of the first heat distribution table stored in the memory to update the first heat distribution table,
• generate a new first heat distribution table by
• processing the first heat distribution table that is updated with a two-dimensional low pass filter process, and
• multiplying, at every predetermined period, a value of the first heat distribution table that is processed with a predetermined heat dissipation coefficient, and
• generate at least one of a corrected brightness signal or a corrected image signal based at least in part on the new first heat distribution table, wherein the at least one of the corrected brightness signal or the corrected image signal reduces a screen burn-in of the image display unit.

A non-transitory computer-readable medium that, when executed by a computing device, causes the computing device to perform a set of operations, the set of operations comprising:

• calculating an average electrical current value of a pixel area in a display surface based on image data, the pixel area including at least one pixel in an image display unit, the image display unit including a plurality of pixels arranged therein;
• calculating heat generation amount data by multiplying the average electrical current value with a predetermined electrical current-heat conversion coefficient to convert the average electrical current value into a value corresponding to an amount of heat generation;
• adding the heat generation amount data to a value of a first heat distribution table of the image display unit to update the first heat distribution table;
• generating a new first heat distribution table of the image display unit by
• processing the first heat distribution table that is updated with a two-dimensional low pass filter process, and
• multiplying, at every predetermined period, a value of the first heat distribution table that is processed with a predetermined heat dissipation coefficient and
• generating at least one of a corrected brightness signal or a corrected image signal based at least in part on the new first heat distribution table, wherein the at least one of the corrected brightness signal or the corrected image signal reduces a screen burn-in of the image display unit.