JP2006195313A - Printing information storing method and, printing information recovery method, printing information storing device, printing information recovery device, natural light-emitting device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that nonvolatile memory devices are too costly to mount in less expensive models of the natural light-emitting device. <P>SOLUTION: This printing information storing device used in a natural light-emitting device having of natural light-emitting elements arranged in a matrix on a substrate has (a) a maximum value detector to find out the maximum value of the printing information for every pixel in the volatile memory when the power is turned off, (b) a numeric calculator to obtain the number for converting the maximum value of the printing information into the maximum value expressible in the bit width of the nonvolatile memory, (c) an information converter to convert the printing information of each pixel into the printing information for storing by the calculation using numeric values, and (d) a storing section to store the printing information for storing and the numeric values used for this calculation in the nonvolatile memory. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

One embodiment of the present invention relates to a burn-in information storage method and a stored burn-in information restoration method used in correction processing for a burn-in phenomenon that occurs in a self-luminous device.
One embodiment of the present invention relates to a burn-in information storage device and a burn-in information restoration device. One embodiment of the present invention relates to a self-luminous device equipped with these devices.
One embodiment of the present invention relates to a program for causing a computer mounted on a self-luminous device to execute a burn-in information storage process and a restoration process.

Flat panel displays are widely used in products such as computer displays, portable terminals, and televisions. Currently, liquid crystal display panels are mainly used, but the narrow viewing angle and slow response speed continue to be pointed out.
On the other hand, an organic EL display formed of a self-luminous element can overcome the above-mentioned problems of viewing angle and responsiveness, and can achieve a thin form, high brightness, and high contrast that do not require a backlight. Therefore, it is expected as a next-generation display device that replaces the liquid crystal display.

Incidentally, it is generally known that organic EL elements and other self-light-emitting elements have characteristics that deteriorate in proportion to the light emission amount and the light emission time.
On the other hand, the content of the image displayed on the display is not uniform. For this reason, the deterioration of the self-luminous element is likely to proceed partially. For example, the self-light-emitting element in the time display area (fixed display area) progresses more rapidly than the self-light-emitting elements in other display areas (moving image display areas).

The luminance of the self-luminous element that has deteriorated is relatively lowered as compared with the luminance of other display areas. In general, this phenomenon is called “burn-in”. Hereinafter, partial deterioration of the self-luminous element is referred to as “burn-in”.
In the case of a display device equipped with multiple types of self-luminous elements with different emission colors or a display device equipped with self-luminous elements capable of generating multiple types of colors, white balance caused by the progress of deterioration characteristics Misalignment may occur. This deviation is visually recognized as a coloring phenomenon. In this specification, these phenomena are also treated as “burn-in” phenomena.

Conventionally, it has been considered most preferable to suppress the “burn-in” phenomenon by improving the light emission lifetime of the material constituting the self-luminous element.
However, no matter how long the light emission lifetime becomes, it is inevitable that the “burn-in” phenomenon will be visually recognized. In addition, there is a case where only a pattern that easily causes the “burn-in” phenomenon is displayed. In such a case, it cannot be dealt with only by improving the light emission life.
In addition, this approach to the “burn-in” phenomenon has a problem that the improvement effect depends on the improvement of the light emission lifetime.

Currently, as a method other than improving the light emission lifetime of a material, for example, techniques of the following documents are proposed.
In this document, the time during which data is displayed on a display device is measured, and the brightness of the light-emitting element is reduced according to the measured value (that is, the deterioration rate of the self-light-emitting element is reduced). And a technique for making the variation in the degree of deterioration inconspicuous.

In this document, input data for each pixel constituting the display panel is integrated for each pixel at a constant period, and the integrated value of each pixel is subtracted from the maximum value of each pixel. A method for setting the correction amount is disclosed. Also disclosed is a method for aligning the display characteristics of each pixel by emitting each pixel with a constant luminance for a time proportional to the amount of correction in a non-use state.

Japanese Patent Laid-Open No. 2000-132139 discloses a method of integrating input data for each pixel and converting the integrated value into a correction amount using a correction table. In addition, a method is disclosed in which input data of each pixel is corrected with the obtained correction amount to make it difficult to visually recognize the burn-in phenomenon. JP-A-2001-175221 discloses a correction method for lowering the luminance data of other pixels so as to match the pixel in which the luminance deterioration is most advanced among the pixels. In addition, a method is disclosed in which luminance data of each pixel is converted with the obtained correction amount to make it difficult to visually recognize the burn-in phenomenon.

In order to correct the burn-in phenomenon over a long period of time, it is necessary to store a different deterioration amount for each pixel for a long period of time or even when the power is turned off.
However, enormous storage capacity is required for long-term storage of the deterioration amount. For example, if 32-bit data per pixel is required, the resolution of the self-luminous device is XGA (eXtended Graphics).
In the case of (Array), a storage area of about 10 Mbytes (= 1024 × 768 × 3 (color) × 4294967295 (32-bit wide data maximum value)) is required even for storing data for one screen.
However, a large-capacity, high-speed readable / writable nonvolatile storage device is very expensive at the present time, and is difficult to mount on an actual product.

The inventors pay attention to the above technical problems and propose the following technical methods.
First, as a method for storing burn-in information in a self-light-emitting device in which a plurality of self-light-emitting elements are arranged in a matrix,
(A) a process of detecting a maximum value of burn-in information corresponding to each pixel from a volatile storage device when detecting a power-off operation;
(B) a process of calculating a numerical value for calculation for converting the maximum value of the burn-in information into a maximum value that can be expressed by the bit width of the nonvolatile storage device;
(C) A process of converting burn-in information of each pixel into burn-in information for storage by an arithmetic process using the calculated numerical value;
(D) It is proposed to have a process for storing the burn-in information for storage and the numerical value used for the calculation in a nonvolatile storage device.

In addition, as a method for restoring burn-in information in a self-light-emitting device in which a plurality of self-light-emitting elements are arranged in a matrix,
(A) When detecting a power-on operation, a process of reading burn-in information converted for storage and a numerical value for restoration from a nonvolatile storage device;
(B) processing for restoring burn-in information corresponding to each pixel using burn-in information corresponding to each pixel and a numerical value for restoration;
(C) Proposing a process having a process of storing the restored burn-in information in a volatile storage device.
The self-luminous device here includes an organic EL (electroluminescence) panel, a PDP (plasma display panel), a CRT (cathode ray tube), an FED (field emission display) panel, an LED panel, and a projector.

By using the storage method according to the invention, it is possible to store all burn-in information even when using a nonvolatile storage device having a very small storage capacity compared to a volatile storage device. As a result, burn-in information can be stored for a long period of time or during power-off.
Further, by using the restoration method according to the invention, the burn-in information when the power is turned off can be restored to the volatile storage device even when the power is turned on again. As a result, even after the power is turned on again, management of the burn-in phenomenon can be resumed from the power-off state. Thereby, the calculation accuracy of the correction value is improved, and the burn-in phenomenon can be corrected accurately over a long period.

Hereinafter, an embodiment example of a burn-in phenomenon correction technique that employs the technical technique according to the invention will be described.
In addition, the well-known or well-known technique of the said technical field is applied to the part which is not illustrated or described in particular in this specification.
The embodiment described below is one embodiment of the present invention and is not limited thereto.

(A) Burn-in phenomenon correction device FIG. 1 shows an example of a burn-in phenomenon correction device (hereinafter referred to as “correction device”).
The correction apparatus 1 includes a burn-in information calculation unit 3, a burn-in information storage unit (volatile storage device) 5, a correction amount calculation unit 7, a burn-in correction unit 9, a burn-in information storage unit (nonvolatile storage device) 11, and storage / restoration control. The unit 13 is configured.
The burn-in information calculation unit 3 is a processing device that calculates burn-in information for each pixel based on an input signal.
The burn-in information refers to, for example, information indicating or estimating a deterioration amount, a difference in deterioration amount, or other luminance reduction of the self-luminous element. The deterioration amount difference is a difference between the deterioration amount of each pixel and the deterioration amount of the reference pixel. In the case of the method of storing the deterioration amount difference, the storage capacity required for the storage is much smaller than storing the deterioration amount.

In this embodiment, the burn-in information calculation method is arbitrary. Therefore, not only a well-known technical method but also various calculation methods that will be developed in the future can be applied. For example, a method of adding input signals for each frame for each pixel can be applied.
In addition, if an input signal is a signal regarding the drive condition of a self-light-emitting element, any signal can be applied according to the burn-in information calculation method. For example, the gradation value corresponding to each self-luminous element (pixel), the cumulative value of the gradation value, the deterioration rate derived from the gradation value, the driving current value, and the driving voltage value applied between the anode and cathode of the self-luminous element Measured values of drive current and drive voltage can be applied.

The burn-in information storage unit (volatile storage device) 5 is a storage device that stores the burn-in information calculated by the burn-in information calculation unit 3 for each pixel. This volatile storage device is required to have a large capacity and high-speed accessibility. Of course, economic efficiency is also required. For example, a semiconductor storage device, a hard disk device or other storage device is used.
The correction amount calculation unit 7 is a processing device that calculates a correction amount corresponding to each pixel (self-emitting element) based on the read burn-in information. For example, the correction amount is set so that the burn-in information difference between pixels becomes zero within a certain correction period. However, the calculation method and the correction principle of the correction amount are arbitrary.

  The burn-in correction unit 9 is a processing device that corrects a corresponding input signal with a calculated correction amount. For example, it comprises a correction amount memory and a correction calculation unit. The correction amount memory is a storage device that holds a correction amount for correction calculation. The correction calculation unit is a processing device that executes correction processing. The specific content of the correction process is determined according to the correction principle to be adopted and the content of the correction amount. For example, processing for adding / subtracting the correction amount to / from the input signal is performed. Further, for example, a process for increasing or decreasing the gain (gain) for the input signal according to the correction amount is executed.

The burn-in information storage unit (nonvolatile storage device) 11 is a storage device that saves burn-in information held in the volatile burn-in information storage unit 5 when the power is turned off. This nonvolatile storage device gives priority to economy from the viewpoint of mounting on a product. For example, the current mainstream flash memory is used. Of course, MRAM (Magnetoresistive Random Access Memory), FRAM (Ferroelectric Random Access Memory), etc. can be used if the product unit price decreases.
In the case of this embodiment, the burn-in information storage unit (nonvolatile storage device) 11 stores information obtained by greatly compressing the data amount of the burn-in information. Accordingly, the storage capacity of the burn-in information storage unit (nonvolatile storage device) 11 can be significantly reduced as compared with the storage capacity of the burn-in information storage unit (volatile storage device) 5. As a result, an inexpensive storage device can be used.

The save / restore control unit 13 saves the burn-in information from the volatile storage device to the nonvolatile storage device when the power is turned off, and stores the burn-in information from the nonvolatile storage device to the volatile storage device when the power is turned on. It is a processing device that controls processing to be restored.
FIG. 2 shows the components of the save / restore control unit 13 that correspond to the save function for saving burn-in information. The save function is realized by the maximum value detection unit 131, the conversion numerical value calculation unit 132, the information conversion unit 133, and the storage processing unit 134.
In the case of this embodiment, the storage function shown in FIG. 2 is executed by inputting a power-off signal generated due to the power-off operation. Of course, the maximum value detection and the conversion numerical value calculation processing may be executed constantly in preparation for power-off.

The maximum value detection unit 131 is a processing device that detects the maximum value of the burn-in information corresponding to each pixel from the burn-in information storage unit (volatile storage device) 5. For example, the maximum value of the deterioration amount or the deterioration amount difference is detected.
The detected maximum value is used to determine the relationship between the burn-in information to be saved and the storage capacity of the nonvolatile storage device.
The conversion numerical value calculation unit 132 is a processing device that calculates a conversion numerical value necessary for the conversion process executed in the comparative storage process.
When the maximum value detected by the maximum value detection unit 131 is smaller than the numerical value that can be stored by the burn-in information storage unit (nonvolatile storage device) 11, “1” is used as the numerical value for conversion.

However, when the self-light-emitting device is used for a long time, the numerical value giving burn-in information is larger than the numerical value that can be stored in the burn-in information storage unit (nonvolatile storage device) 11.
Therefore, the conversion numerical value calculation unit 132 calculates a numerical value (conversion numerical value) necessary to compress the maximum value of the burn-in information to the maximum value that can be stored in the burn-in information storage unit (nonvolatile storage device) 11. To do. That is, the conversion numerical value calculation unit 132 calculates a numerical value for calculation for converting the maximum value of the burn-in information into the maximum value that can be expressed by the bit width of the nonvolatile storage device.
In the case of this embodiment, since the optimum conversion numerical value is calculated according to the maximum value of the burn-in information, the storage area of the non-volatile storage device that is the save destination can be utilized to the maximum. Also, the conversion error can be kept to the minimum necessary, unlike the case where the conversion numerical value is fixed.
In the calculation process, the compression conversion used in the information conversion unit 133 is considered. For compression conversion, for example, division operation, logarithmic conversion, or the like is used.

The information conversion unit 133 is a processing device that converts all burn-in information stored in the volatile storage device into burn-in information for storage by arithmetic processing using the conversion numerical values. By this arithmetic processing, all the burn-in information stored in the volatile storage device is converted into numerical values that can be stored in the nonvolatile storage device.
The storage processing unit 134 is a processing device that stores the burn-in information for storage generated by the arithmetic processing and the conversion numerical value used for the calculation in a nonvolatile storage device. Thus, not only the burn-in information after compression conversion but also the conversion numerical values used for the conversion process can be stored together to restore the state before the conversion.

FIG. 3 shows components corresponding to the burn-in information restoration function in the save / restore control unit 13.
This restoration function is realized by the information reading unit 135, the information restoration unit 136, and the storage processing unit 137. In the case of this embodiment, the restoration function shown in FIG. 3 is executed by the input of a power-on signal generated due to the power-on operation.
The information reading unit 135 is a processing device that reads the burn-in information converted for storage and the restoration numerical value (conversion numerical value) from the burn-in information holding unit (nonvolatile storage device) 11.

The information restoration unit 136 is a processing device that restores burn-in information corresponding to each pixel using burn-in information corresponding to each pixel and a numerical value for restoration. Specifically, a conversion process opposite to that at the time of compression conversion is executed. By this processing, the burn-in information before compression conversion is restored.
The storage processing unit 137 is a processing device that stores the restored burn-in information in the burn-in information storage unit (volatile storage device) 5.
Note that after the burn-in information is restored to the volatile storage device by the power-on operation, the correction process based on the restored burn-in information is resumed.

(B) Correction Process and Saving / Restoring Process Next, a correction operation and a burn-in information saving / restoring operation by the correction apparatus 1 will be described.
(B-1) Before power-off During the use of the self-light-emitting device, the correction device 1 executes the same processing as the existing correction operation. That is, the correction amount is determined based on the burn-in information calculated based on the input signal, and the correction operation is executed so as to match the degree of deterioration between pixels.

(B-2) Burn-in information saving process When a power-off operation is executed, a burn-in information saving process is executed.
FIG. 4 shows an example of processing executed by the save / restore control unit 13. FIG. 4 shows the case where the bit width of the burn-in information storage unit (nonvolatile storage device) 11 is “8” (when the maximum value that can be stored for each pixel is “255”) and information is obtained by division calculation. The example of operation in the case of compressing quantity is shown.

First, the storage / restoration control unit 13 reads the burn-in information from the burn-in information storage unit 5 which is a volatile storage device (S1).
Next, the storage / restoration control unit 13 compares the burn-in information for each pixel and detects the maximum value among them.
In the case of FIG. 5A, the burn-in information of the pixel located at the upper left corner gives the maximum value (S2). Here, the maximum value is “5233256”. Of course, the burn-in information storage unit 5 which is a volatile storage device has a storage capacity capable of storing numerical values sufficiently larger than this.

Next, the storage / restoration control unit 13 converts the detected maximum value into the maximum value “255” that can be stored in the burn-in information storage unit 11, which is a non-volatile storage device. Is calculated (S3).
In this example, a division operation is adopted for the compression conversion. Therefore, the conversion numerical value C255 can be obtained by dividing the maximum value “5233256” of the detected burn-in information by the maximum value “255” that can be stored. . In the case of FIG. 5, the conversion numerical value C255 is “20442”.

Next, the storage / restoration control unit 13 divides all burn-in information stored in the burn-in information storage unit 5 which is a volatile storage device by the conversion numerical value C255 (S4). By this division operation, burn-in information converted into an 8-bit width is obtained. FIG. 5B shows the result of the division operation.
The storage / restoration control unit 13 stores the burn-in information after the compression conversion and the conversion numerical value C255 in the burn-in information storage unit 11 which is a nonvolatile storage device (S5).
In this way, if the save / restore control unit 13 is used, burn-in information having a width of several tens of bits can be saved as burn-in information having an 8-bit width. That is, the data amount can be greatly reduced.

(B-3) Burn-in information restoration process (at power-on)
Next, an operation when a power-on operation is performed will be described. That is, the burn-in information restoration process will be described.
FIG. 6 shows an example of processing executed by the save / restore control unit 13. FIG. 6 also shows that when the bit width of the burn-in information storage unit (nonvolatile storage device) 11 is “8” (when the maximum storable value is “255”), the amount of information is compressed by the division operation. This is a case where burn-in information is stored.

First, the storage / restoration control unit 13 reads the burn-in information and the conversion numerical value C255 from the burn-in information storage unit 11 which is a nonvolatile storage device (S11).
When the reading is finished, the storage / restoration control unit 13 multiplies the burn-in information of each pixel by the conversion numerical value C255 to restore the burn-in information before compression conversion (S12).
Thereafter, the storage / restoration control unit 13 stores the restored burn-in information in the burn-in information storage unit 5 which is a volatile storage device (S13).
As a result, the burn-in information storage unit 5 that is a volatile storage device restores the burn-in information before power-off.

(B-4) After restoration of burn-in information After this, the existing correction operation is continuously resumed from the burn-in information when the power is turned off. That is, the burn-in information stored in the burn-in information storage unit 5 is updated by a newly input signal. Further, the correction of the burn-in information difference generated between the pixels is continuously executed from the burn-in information when the power is turned off.

(C) Burn-in information calculation example Burn-in information can be calculated using an existing method. Here, the calculation method proposed by the inventors is shown as an example. This calculation method is a very effective processing method when the deterioration of the light emission characteristic does not proceed in proportion to the input signal value.
Here, a case where burn-in information is given as a deterioration amount will be described. The inventors propose a method of using a parameter called “deterioration rate” for the calculation of the deterioration amount.
The deterioration rate refers to a value obtained by converting a decrease in light emission amount per unit time, and is obtained from an actual measurement value of light emission characteristics. For example, it is given as a value obtained by converting the actually measured amount of decrease in luminance when light emission by individual gradation values continues for a certain period.

FIG. 7 shows an example of a look-up table for converting the input signal into a deterioration rate when the input signal is given as a gradation value. FIG. 7 shows an example in which the gradation value is given by 8 bits. Since FIG. 7 shows a case of 8 bits, the gradation value is given as a value from 0 to 255.
The table information stored in the lookup table is set based on the correspondence relationship between the gradation value and the deterioration rate acquired in the previous experiment. The inventors propose the following method as an example of an experiment for determining table information.

For example, when the self-luminous device is turned on for a certain period at a certain fixed gradation value, how much the actually measured luminance is reduced with respect to the initial luminance of the maximum gradation value (255 for 8-bit) The operation of actually measuring (that is, the luminance reduction rate) is repeated for all gradation values.
When the number of gradations is large, a method of sampling an appropriate gradation value and calculating using a relational expression obtained from the result is also conceivable.
The amount of deterioration can be derived by multiplying the deterioration rate by the light emission time t. For example, when the deterioration rate corresponding to the gradation value of a certain pixel is given by α, the deterioration amount of the certain pixel can be calculated as α × t.
Since the deterioration amount calculated in this manner reflects the actual light emission characteristics of each pixel (self-emitting element), an accurate correction amount can be calculated.

(D) Effect of Embodiment Using the correction apparatus according to this embodiment, it is possible to dramatically reduce the storage capacity of the nonvolatile storage device necessary for storing burn-in information when the power is turned off. For example, as described above, it is possible to save with a storage capacity of 8 bits per pixel.
This means that the burn-in phenomenon correction apparatus can be realized on a realistic system scale no matter how much the image resolution will increase in the future. That is, no matter how much the resolution of the self-luminous device will increase in the future, this means that the burn-in phenomenon correcting device can be mounted at a practical cost.
In particular, when a division operation is used for compression conversion, the calculation load required for compression conversion can be reduced, and the required circuit scale can be greatly reduced.

(E) Example of mounting on self-luminous device FIG. 8 shows an example of mounting the burn-in phenomenon correcting device on the self-luminous device.
The self-light-emitting device 21 includes a burn-in phenomenon correction device 25 and a display device 27 mounted on a housing 23.
Here, the burn-in phenomenon correction device 25 inputs a video signal generated at an external terminal or inside, and executes a gradation value correction operation so that no deterioration amount difference occurs between the correction target pixel and the reference pixel. To do.

The display device 27 is assumed to be composed of a display device and its drive circuit. As the display device, an organic EL (electroluminescence) panel, a PDP (plasma display panel), an FED (field emission display) panel, an LED panel, or a CRT is used.
In the case of FIG. 8, the self-light-emitting device 21 is illustrated as having a burn-in phenomenon correction device 25 that is a processing device dedicated to correction of the burn-in phenomenon. However, when all the functions are executed in software. These functions are realized by a computer mounted on the self-luminous device.

(F) Other Embodiments Various modifications can be considered for the above-described embodiments within the scope of the gist of the invention. Various modifications and application examples created based on the description of the present specification are also conceivable.

It is a figure which shows the example of a form of the burn-in phenomenon correction apparatus. 6 is a configuration example corresponding to a burn-in information storage function. It is a structural example corresponding to the restoration function of burn-in information. It is a figure which shows the preservation | save processing operation | movement of burn-in information. It is a figure which shows the example of conversion of the burn-in information. It is a figure which shows restoration processing operation | movement of the burn-in information. It is a figure which shows the example of a table holding the correspondence of a gradation value and a deterioration rate. It is a figure which shows the structural example of a self-light-emitting device.

Explanation of symbols

1 Burn-in phenomenon correction device 3 Burn-in information calculation unit 5 Burn-in information storage unit (volatile storage device)
7 Correction amount calculation unit 9 Burn-in correction unit 11 Burn-in information storage unit (nonvolatile storage device)
13 Save / Restore Control Unit

Claims (10)

A method for storing burn-in information in a self-light-emitting device in which a plurality of self-light-emitting elements are arranged in a matrix,
A process for detecting the maximum value of burn-in information corresponding to each pixel from the volatile storage device when detecting a power-off operation;
A process of calculating a numerical value for calculation for converting the maximum value of the burn-in information into a maximum value that can be expressed by a bit width of a nonvolatile storage device;
A process of converting burn-in information of each pixel into burn-in information for storage by an arithmetic process using the numerical values;
A burn-in information storage method comprising: storing the burn-in information for storage and the numerical value used for the calculation in a nonvolatile storage device. The burn-in information storage method according to claim 1,
The burn-in information is a deterioration amount. The burn-in information storage method, wherein the burn-in information is a deterioration amount. The burn-in information storage method according to claim 1,
The burn-in information storage method, wherein the burn-in information is a deterioration amount difference. A method for restoring burn-in information in a self-light-emitting device in which a plurality of self-light-emitting elements are arranged in a matrix,
A process of reading burn-in information converted for storage and a numerical value for restoration when detecting a power-on operation;
Using the burn-in information corresponding to each pixel and the numerical value for restoration, a process for restoring the burn-in information corresponding to each pixel;
And a process for saving the restored burn-in information in a volatile storage device. A device for storing burn-in information in a self-light-emitting device in which a plurality of self-light-emitting elements are arranged in a matrix,
A maximum value detection unit that detects a maximum value of burn-in information corresponding to each pixel from a volatile storage device when detecting a power-off operation;
A conversion numerical value calculation unit for calculating a numerical value for calculation for converting the maximum value of the burn-in information into a maximum value that can be expressed by the bit width of the nonvolatile storage device;
An information conversion unit that converts burn-in information of each pixel into burn-in information for storage by arithmetic processing using the numerical values;
A burn-in information storage device comprising: a storage processing unit that stores the burn-in information for storage and the numerical value used for the calculation in a nonvolatile storage device. An apparatus for restoring burn-in information in a self-light-emitting device in which a plurality of self-light-emitting elements are arranged in a matrix,
An information reading unit that reads out burn-in information converted for storage and a numerical value for restoration when detecting a power-on operation;
Using the burn-in information corresponding to each pixel and the numerical value for restoration, an information restoration unit for restoring the burn-in information corresponding to each pixel;
A burn-in information restoration device, comprising: a storage processing unit that saves the restored burn-in information in a volatile storage device. A self-light-emitting device in which a plurality of self-light-emitting elements are arranged in a matrix,
A volatile storage device for correction processing that stores burn-in information calculated sequentially;
A non-volatile storage device for storing burn-in information;
A maximum value detection unit that detects a maximum value of burn-in information corresponding to each pixel from the volatile storage device when detecting a power-off operation;
A conversion numerical value calculation unit that calculates a numerical value for calculation for converting the maximum value of the burn-in information into a maximum value that can be expressed by the bit width of the nonvolatile storage device;
An information conversion unit that converts burn-in information of each pixel into burn-in information for storage by arithmetic processing using the numerical values;
A self-luminous device comprising: a storage processing unit that stores the burn-in information for storage and the numerical value used for the calculation in a nonvolatile storage device. A self-light-emitting device in which a plurality of self-light-emitting elements are arranged in a matrix,
A volatile storage device for correction processing that stores burn-in information calculated sequentially;
A non-volatile storage device for storing burn-in information;
An information reading unit that reads out burn-in information converted for storage and a numerical value for restoration when detecting a power-on operation;
Using the burn-in information corresponding to each pixel and the numerical value for restoration, an information restoration unit for restoring the burn-in information corresponding to each pixel;
A self-luminous device comprising: a storage processing unit for storing the restored burn-in information in the volatile storage device. In a computer mounted on a self-luminous device in which a plurality of self-luminous elements are arranged in a matrix,
A process for detecting the maximum value of burn-in information corresponding to each pixel from the volatile storage device when detecting a power-off operation;
A process of calculating a numerical value for calculation for converting the maximum value of the burn-in information into a maximum value that can be expressed by a bit width of a nonvolatile storage device;
A process of converting burn-in information of each pixel into burn-in information for storage by an arithmetic process using the numerical values;
A program for executing a process of storing the burn-in information for storage and the numerical value used for the calculation in a nonvolatile storage device. In a computer mounted on a self-luminous device in which a plurality of self-luminous elements are arranged in a matrix,
A process of reading burn-in information converted for storage and a numerical value for restoration when detecting a power-on operation;
Using the burn-in information corresponding to each pixel and the numerical value for restoration, a process for restoring the burn-in information corresponding to each pixel;
A program for causing the restored burn-in information to be stored in a volatile storage device.

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