JP4534548B2 - Burn-in correction device, display device, image processing device, program, and recording medium - Google Patents

Description

  One aspect of the present invention relates to a burn-in correction device for a self-luminous display device. Another invention relates to a display device and an image processing device equipped with the burn-in correction device. Another invention relates to a program for executing the burn-in correction function and a recording medium on which the program is recorded.

  A light-emitting body constituting a self-luminous display device has a characteristic that it deteriorates in proportion to the amount of light emission and time. By the way, the content of the displayed image is not uniform. For this reason, the deterioration of the light emitter does not proceed uniformly.

  For example, the light emitting body in the time display area is more rapidly deteriorated than the light emitting bodies in the other display areas. For this reason, the brightness | luminance of the light-emitting body of a time display area falls relatively compared with the brightness | luminance of another display area. In general, this phenomenon is called “burn-in”. Hereinafter, partial deterioration of the light emitter is referred to as “burn-in”.

  Currently, various methods are being studied as measures for improving “burn-in”. Some of them are listed below. For example, Patent Document 1 below discloses a method of detecting a change amount of a drive voltage of a light emitting element and controlling a constant current drive signal according to the change amount.

  For example, Patent Document 2 below discloses a method of applying a reverse bias so that an EL element does not deteriorate while an electroluminescent element (hereinafter referred to as “EL element”) does not emit light.

  Further, for example, Patent Document 3 below discloses a method of actively discharging a storage capacitor of a pixel and suppressing unnecessary light emission time. Also, for example, Patent Document 4 below discloses a technique for reducing burn-in by devising how to use a screen saver or the like.

  Further, for example, Patent Document 5 below discloses a method for preventing the lighting of the same portion for a long time by shifting the display position of the image little by little. Further, for example, Patent Document 6 below discloses a technique for calculating the amount of deterioration from the usage time of the display device, reducing the luminance of all the display elements, and slowing down the deterioration rate of the display elements.

Further, for example, Patent Document 7 below discloses a technique for reducing the brightness of all display elements when an image that does not change is input to the screen for a certain period of time.
JP-A-7-36410 Japanese Patent Laid-Open No. 2003-150110 Japanese Patent Laid-Open No. 2002-169509 JP 2002-207475 A JP-A-8-248934 JP 2000-356981 A Japanese Patent Laid-Open No. 5-61426

  Such a technique is effective in delaying the appearance of “burn-in” or preventing an increase in the appearing luminance difference. However, it is inevitable that “burn-in” appears or the brightness difference increases as time elapses.

The inventor pays attention to the above technical problem and proposes the following technical technique. That is, a method of controlling the accumulated light emission amount for each pixel or each sub-pixel is adopted.
More specifically, the cumulative light emission amount of the pixel having the smallest cumulative light emission amount among all the pixels constituting the self-light-emitting display device is set as a reference value, and the pixel having a larger degree of deviation of the cumulative light emission amount from the reference value, A method for subtracting a large correction value from the corresponding original input pixel data is proposed.

  Similarly, for each color constituting the subpixel, the cumulative light emission amount of the subpixel having the smallest cumulative light emission amount among all the subpixels corresponding to each color is used as a reference value, and the degree of deviation of the cumulative light emission amount from the reference value is large. We propose a method of subtracting a larger correction value from the corresponding original input subpixel data for subpixels.

  In this case, the smaller the deterioration of the light emitter (the smaller the accumulated light emission amount), the same or close value as the original input data is given, while the larger the deterioration of the light emitter (the larger the accumulated light emission amount), A value smaller than the input data is given. That is, the deterioration rate after the start of correction can be made slower than the original deterioration rate for pixels or sub-pixels where the deterioration of the light emitter is large.

  By adopting such a correction technique, it is possible to correct the deterioration degree (life) of the illuminant corresponding to each pixel or subpixel so as to be equal for each pixel or subpixel (color unit). That is, it is possible to recover the partial deterioration of the light emission ability and eliminate the image sticking phenomenon.

  Hereinafter, exemplary embodiments of a correction device that corrects burn-in of a self-luminous display device and an electronic apparatus equipped with the correction device 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.

(1) Configuration Example of Burn-in Correction Device Hereinafter, an embodiment example of a burn-in correction device will be described. Note that sub-pixels of the minimum display unit are arranged in a matrix on the display panel to be corrected. Each sub-pixel corresponds to each color of R (red), G (green), and B (blue). One picture element (pixel) is composed of three sub-pixels corresponding to these colors.

  Accordingly, the display color of each pixel (pixel) is expressed by a combination of R (red), G (green), and B (blue). In this specification, data giving the luminance of a subpixel is referred to as subpixel data.

  The sub pixel data corresponding to R (red) is R sub pixel data, the sub pixel data corresponding to G (green) is G sub pixel data, and the sub pixel data corresponding to B (blue) is B sub. This is called pixel data.

  Also, data that gives luminance in units corresponding to each pixel (pixel) is called pixel data. The calculation of the accumulated light emission amount is performed for values calculated from the R subpixel data, the G subpixel data, and the B subpixel data. For example, the process is performed for luminance values in units of pixels (pixels) calculated from three subpixel data.

  Each embodiment to be described later can be similarly applied to the case where the cumulative light emission amount is aligned in units of pixels and the case where the cumulative light emission amount is aligned in units of subpixels. Here, when the accumulated light emission amounts are made uniform in pixel units, the corresponding light emission amounts are considered in pixel units. On the other hand, when the accumulated light emission amounts are made uniform in subpixel units, the corresponding light emission amounts are considered in subpixel units corresponding to the respective colors.

  Below, in order to avoid duplication description, the case where the accumulation light-emission amount is arrange | equalized in a sub pixel unit (color unit) is demonstrated. However, as described above, each embodiment can be similarly applied to the case where the accumulated light emission amounts are aligned in units of pixels. Each embodiment will be described without specifying a color, but can be applied to each color constituting one pixel.

(1-1) Embodiment 1
FIG. 1 shows a conceptual configuration example of a burn-in correction apparatus. The correction processing circuit 1 constituting the burn-in correction device is realized as a part of a semiconductor integrated circuit and a part of an image processing board.

  The correction processing circuit 1 executes the next correction operation using the cumulative light emission amount of the subpixel having the smallest cumulative light emission amount among all the subpixels corresponding to the color to be processed as a reference value. That is, the correction processing circuit 1 executes a process of subtracting a large correction value from the corresponding original input subpixel data as the subpixel has a larger degree of divergence of the accumulated light emission amount with respect to the reference value.

  FIG. 2 shows the processing image. FIG. 2 shows a transition example of the accumulated light emission amount for each subpixel when the self-luminous display device is lit for a certain period. In addition, the horizontal axis of FIG. 2 represents lighting time. In this example, the lighting time is 200 frames.

  Also, the vertical axis in FIG. 2 corresponds to the cumulative light emission amount for each subpixel. In the case of FIG. 2, the cumulative light emission amount is given as a cumulative addition value of input subpixel data corresponding to each subpixel. Incidentally, the cumulative added value (count value) of subpixel 2 after lighting 200 frames is 2500, and the cumulative added value (count value) of subpixel 1 is 50.

  Here, the sub-pixel 1 is a sub-pixel that provides a reference value for the accumulated light emission amount. That is, the subpixel 1 is a subpixel that gives the minimum cumulative addition value among all the subpixels. In other words, the subpixel 1 corresponds to the subpixel with the least deterioration in the color to be processed.

  On the other hand, the subpixel 2 is a subpixel corresponding to other than the reference value. That is, the sub-pixel 2 is a sub-pixel that has a larger cumulative addition value than the sub-pixel 1 and is more deteriorated. In the case of FIG. 2, the difference between the cumulative addition values is 2450. If this difference is eliminated in the 200 frame period, the correction value per frame is 12.25 (= 2450 ÷ 200).

  Therefore, the correction processing circuit 1 subtracts the correction value from the input subpixel data of the subpixel 2. Incidentally, the correction value of the input subpixel data for the subpixel 1 is zero. The input / output characteristics after the start of correction are shown in FIG.

  In FIG. 3, the input / output characteristics corresponding to the sub-pixel 1 are represented by thin lines. Further, the input / output characteristics before correction corresponding to the sub-pixel 2 are represented by broken lines. In addition, the input / output characteristics after the start of correction corresponding to the sub-pixel 2 are represented by bold lines.

  As shown in FIG. 3, the input / output characteristics for the subpixel 1 do not change before and after the start of correction. However, the input / output characteristics for the sub-pixel 2 shift downward before and after the start of correction. This is because the value of the input sub-pixel data is converted to a value smaller by the correction value by the correction. For example, even if the input subpixel data before the start of correction has a gradation value of 255, the gradation value after the start of correction is 242.75 (= 255−12.25).

  In the first place, even if the input subpixel data having the same value as the subpixel 1 is given, the subpixel 2 cannot obtain the same luminance as the subpixel 1 due to the deterioration of the light emitting element. That is, a difference in light emission ability indicated by a broken line and a thin line is recognized. In addition, after the start of correction, the output luminance of the sub-pixel 2 further decreases. This means that the contrast difference becomes large.

  However, as a result of such correction processing, the progress speed of the deterioration in the subpixel 2 is surely slower than that of the subpixel 1. For this reason, by continuing the correction process, the deterioration degree (remaining life) of the subpixel 2 can be made to be the same as or nearly the same as the deterioration degree (remaining life) of the subpixel 1.

  FIG. 4 shows the situation. At the correction start time t1, a life difference between the subpixel 1 and the subpixel 2 is recognized. However, at the correction end time t2, the difference in life between the subpixel 1 and the subpixel 2 is ideally eliminated. That is, during the correction period, the degree of deterioration of all the subpixels matches the degree of deterioration of the subpixel 1 that has not progressed the most.

  This means that the input / output characteristics of the subpixel 1 and the input / output characteristics of the subpixel 2 match as shown in FIG. Therefore, when the same gradation value is given as the input subpixel data, the same output luminance can be obtained. If the output luminance is the same, the burn-in phenomenon is not perceived. This is the principle of correction.

  Incidentally, if the burn-in phenomenon is eliminated in one correction period, in order to eliminate the occurrence of a new life difference during the correction period, input sub-pixel data (for example, blue back) having the same gradation value in all the sub-pixels is excluded. ) Is desirable.

  On the other hand, when the correction is performed using the normal screen, it is unavoidable that a new life difference occurs during the correction period, and thus it is necessary to repeatedly execute the correction process. It should be noted that the lifetime difference can be converged to substantially the same range by repeatedly executing the correction process. The burn-in phenomenon is not perceived when the difference in life is almost the same (the input / output characteristics are the same).

  As described above, the correction processing circuit 1 determines the correction value of the sub-pixel corresponding to each color based on the information of the input sub-pixel data actually used for displaying the image. Burn-in can be corrected regardless of the image.

  Further, in the case of the correction processing circuit 1, since burn-in is corrected in units of subpixels, precise correction is possible. If the correction period is shortened, the correction process can be executed in real time. By correcting the burn-in in real time, it is possible to prevent a difference in life (a difference in input / output characteristics) from occurring for a long time.

  The correction period can be set freely. That is, optimization can be performed according to the screen size and system configuration of the display device to be applied. Further, in the correction method described above, a method of eliminating the life difference by reducing the luminance of the deteriorated sub-pixel is adopted.

(1-2) Embodiment 2
FIG. 6 shows a specific example of the burn-in correction device. This burn-in correction device includes a cumulative addition circuit 11, a cumulative addition value memory 12, a difference value calculation circuit 13, a correction value calculation circuit 14, and a correction processing circuit 15.

  The cumulative addition circuit 11 is a processing circuit that calculates a cumulative addition value of input subpixel data for each subpixel corresponding to each color. Each time input subpixel data of the current frame is input, the cumulative addition circuit 11 adds each input subpixel data to the cumulative addition value up to the previous frame, and updates the cumulative addition value. Such an operation can be realized using an internal memory and an adder. The internal memory is reset after the cumulative addition value is written to the cumulative addition value memory 12.

  The cumulative addition value memory 12 is a frame memory that holds the cumulative addition value calculated by the cumulative addition circuit 11 during the accumulation period. This cumulative addition value is used in the difference value calculation circuit 13. The storage capacity of the cumulative added value memory 12 needs to be large enough to cope with the case where the maximum gradation value is continuously input during the cumulative period. If the accumulation period is short, the storage capacity of the accumulated addition value memory 12 can be reduced accordingly.

  The difference value calculation circuit 13 is a processing circuit that searches for the minimum value in the cumulative addition value memory 12 and calculates a difference value between the searched minimum value and the cumulative addition value corresponding to each subpixel. FIG. 7A shows an example of storing the difference value corresponding to each subpixel. The figure is a part of the frame memory. One grid corresponds to one subpixel.

  In the case of FIG. 7A, the sub-pixel in the upper left corner represents that the gradation difference from the minimum cumulative addition value is 3256. Similarly, the subpixel on the right side represents that the gradation difference from the minimum cumulative addition value is 136.

  The correction value calculation circuit 14 is a processing circuit that calculates a correction value to be given within the correction period. The correction value calculation circuit 14 divides the difference value corresponding to each subpixel by the number of frames in the correction period, and sets the value as the correction value corresponding to each subpixel.

  FIG. 7B shows correction values per frame when the number of frames in the correction period is 131. In FIG. 7B, the result of the division operation is rounded off and expressed as an integer value. For example, the correction value of the subpixel in the upper left corner is 25. Also, the correction value of the right subpixel is 1.

  The correction processing circuit 15 is a processing circuit that subtracts the corresponding correction value from the input subpixel data of the current frame. This subtraction process is executed for the correction period (131 frames in the case of FIG. 7). Note that after the correction period ends, the input sub-pixel data is output as it is until a new correction period starts.

  The calculation required for the burn-in correction apparatus is very simple as described above. Therefore, it does not require complicated calculation and memory unlike the conventional apparatus. Further, unlike a conventional apparatus, a high-performance CPU (central processing unit) and a large-scale logic circuit are not required.

  Incidentally, as a result of simple circuit configuration, even when this burn-in correction device is mounted on an existing substrate, it can be mounted on a part of a semiconductor integrated circuit such as a timing generator. That is, it can be mounted without requiring a special peripheral circuit.

(1-3) Embodiment 3
FIG. 8 shows another embodiment of the burn-in correction apparatus. Here, a burn-in correction apparatus having a function of executing the above-described correction processing only on a still image portion will be described. For the sake of simplicity, FIG. 8 shows parts corresponding to those in FIG.

  What is newly added is a still area recognition circuit 16. The still area recognition circuit 16 is a processing circuit that recognizes a still image portion from the current frame and supplies it to the cumulative addition circuit 11. For this reason, the still region recognition circuit 16 is arranged in the preceding stage of the cumulative addition circuit 11. The input subpixel data is input to the correction processing circuit 15 and the still area recognition circuit 16.

  A known motion vector recognition technique can be diverted for determining the still image area. However, the configuration shown in FIG. 9 is adopted here. The still area recognition circuit 16 includes frame memories 17 and 18, a motion determination circuit 19, and a data conversion circuit 20. The frame memory 17 is a storage device that stores image data (input subpixel data) one frame before. On the other hand, the frame memory 18 is a storage device that stores image data (input subpixel data) of the current frame.

  The motion determination circuit 19 is a processing circuit that compares the previous frame stored in the frame memory 17 with the current frame stored in the frame memory 18 and classifies the still image region and the moving image region. Specifically, as shown in FIG. 10A, the motion determination circuit 19 compares the previous frame and the current frame, and determines whether or not the input subpixel data of the corresponding subpixel is the same.

  In this example, the motion determination circuit 19 determines a subpixel having the same input subpixel data in the previous and subsequent frames as a still image region. On the other hand, the motion determination circuit 19 determines subpixels having different input subpixel data in the preceding and following frames as moving image areas.

  The data conversion circuit 20 is a processing circuit that selectively rewrites input subpixel data based on the determination result of the motion determination circuit 19. Here, as shown in FIG. 10B, the input subpixel data of the subpixel corresponding to the moving image area is rewritten to zero. For the still image area, the input sub-pixel data as it is input is output to the cumulative addition circuit 11.

  As a result, the following processing is executed in the subsequent processing circuit. First, the cumulative addition circuit 11 calculates the cumulative addition value only for the still image area. Next, the difference value calculation circuit 13 calculates the difference value of each sub-pixel using the sub-pixel with the least deterioration in the still image region as a reference value. Then, the correction value calculation circuit 14 calculates a correction value necessary for eliminating the difference value within the correction period.

  The correction processing circuit 15 subtracts each correction value from the input sub-pixel data so that the degree of deterioration of each area matches the sub-pixel that has not deteriorated most only in the still image area. Note that the still image area in one frame is not necessarily limited to the portion where the time display or other fixed display appears.

  In addition, this still image area appears at an unspecified position according to the content of the input image data. Therefore, there is a high possibility that the still image area other than the fixed display becomes the reference value.

  Normally, the degree of deterioration outside the fixed display area is considerably smaller than that of the fixed display area. Therefore, the burn-in phenomenon can be reduced or eliminated by matching the degree of deterioration of the fixed display area to the one having the smallest degree of deterioration among the still image areas arbitrarily specified by the still area recognition circuit 16.

(1-4) Embodiment 4
As described above, the three exemplary embodiments have described the case where the burn-in correction apparatus is realized as a part of a semiconductor integrated circuit or a part of an image processing board. However, a function equivalent to the above-described embodiment can be realized by software processing. Here, a case where functions equivalent to those of the second embodiment are realized by software processing will be described.

A well-known circuit configuration is used for a computer on which the burn-in correction process is executed. That is, a central processing unit (CPU) that executes arithmetic processing, a random access memory (RAM) and a ROM (read) as main storage devices
only memory) and I / O devices.

  The burn-in correction processing is usually executed as a part of the image processing function. The burn-in correction program is stored in the main storage device together with other image processing programs. Whether the function is installed as a part of the operation system, firmware, or application software is determined according to the use environment.

  FIG. 11 shows a processing procedure of software corresponding to the processing function. First, a cumulative addition process for calculating a cumulative added value of input sub-pixel data for each sub-pixel constituting the self-luminous display device is executed (process P1). Of course, this calculation is executed for a predetermined accumulation period. The accumulated addition value is stored in a frame memory or other storage device.

  Next, the minimum value among the calculated cumulative addition values is searched, and a difference value between the searched minimum value and the cumulative addition value corresponding to each subpixel is calculated (process P2). Thereafter, the difference value calculated for each sub-pixel is divided by the number of processes within the correction period to calculate a correction value per process (process P3). After that, the correction value calculated for each subpixel is subtracted from the corresponding input subpixel data (process P4).

  This correction process is executed for a predetermined correction period. Thus, in the correction period, input subpixel data having a smaller correction value is output for a subpixel that has deteriorated more and a subpixel that has not deteriorated.

  Of course, functions equivalent to those of the third embodiment can be realized by software processing. In that case, before each of these processes, a process for determining whether the sub-pixel to be processed is a still image region or a moving image region is executed. Then, a non-zero correction value is calculated only for the still image area. Of course, the correction value of the moving image area is zero.

(2) System Example Next, an implementation example of the above-described burn-in correction apparatus and burn-in correction program will be described. Here, a case where a self-luminous display device and an image processing device that generates an image signal are separate housings will be described. Needless to say, it can also be mounted on an electronic device in which a self-luminous display device and an image processing device are mounted in one housing.

(2-1) Display Device Mounted Type FIG. 12 shows a system example in which the burn-in correction device 21 is mounted on the display device 22. The self-luminous display device 22 and the image processing device 23 are connected via a wired communication path or a wireless communication path. The connection form may be direct connection or LAN connection.

  FIG. 13 shows a functional block configuration of the self-luminous display device 22. Examples of this type of display device 22 include a cathode ray tube (CRT), a plasma display panel (PDP), an electroluminescence display (EL), and a field emission display (FED).

  The display device 22 includes a display device 22A corresponding to these various display methods, a drive circuit 22B, and a burn-in correction device 21. As the drive circuit 22B, one corresponding to the display device 22A to be driven is used. The image processing device 23 may have a known circuit configuration.

  In the case of this system example, the image processing device 23 outputs an image signal corresponding to the display device connected to. The image signal may be analog or digital. When the image signal is input from the image processing device 23, the display device 22 performs the above-described burn-in correction processing on the input subpixel data corresponding to each subpixel. The input subpixel data after this correction processing is given to the drive circuit 22B, and the display device 22A is driven. Thus, an image is displayed.

(2-2) Image Processing Device Mounted Type FIG. 14 shows a system example in which the burn-in correction device 24 is mounted on the image processing device 25. Also in this case, the connection between the image processing device 25 and the self-luminous display device 26 may be a wired connection or a wireless connection. Of course, the connection form may be direct connection or LAN connection.

  FIG. 15 shows a functional block configuration of the image processing device 25 connected to the self-luminous display device 26. In general, the image processing device 25 can be connected to a non-self-luminous display device (for example, a liquid crystal display device). Therefore, the functional block configuration in FIG. 15 is a configuration in the case where a self-luminous display device 26 is connected as an image signal output device.

  The image processing device 25 includes an image processing circuit 25A and a burn-in correction device 24. In FIG. 15, a well-known circuit configuration is omitted. The image processing circuit 25A executes image processing according to the form of the electronic device (image processing device 25) to be mounted. For example, image capturing, reproduction, editing, and other processes are executed.

  In the case of this system example, the burn-in correction process is executed in the housing of the image processing device 25. That is, the image signal output from the image processing circuit 25A is input to the burn-in correction circuit 24 arranged between the output interface.

  The burn-in correction circuit 24 performs the burn-in correction process described above for each input subpixel data of the image signal. In the case of this system example, the display device 26 displays the input image signal on a display device through known signal processing.

  Examples of this type of image processing device 25 include an image pickup device (including not only a camera unit but also one integrated with a recording device), a computer (including a server), various information processing terminals ( Mobile phones, electronic notebooks, etc.), playback devices for various recording media, image editing devices, and game machines can be applied.

1 is a block diagram illustrating an embodiment of a burn-in correction apparatus. It is a figure which shows transition of the accumulated light emission amount. It is a figure which shows the input / output characteristic at the time of a correction | amendment start. It is a figure which shows the lifetime transition of a light-emitting body. It is a figure which shows the ideal input-output characteristic after completion | finish of correction | amendment. 1 is a block diagram illustrating an embodiment of a burn-in correction apparatus. It is a figure which shows the outline | summary of a difference value calculation process and a correction value calculation process. 1 is a block diagram illustrating an embodiment of a burn-in correction apparatus. It is a figure which shows the circuit structural example of a still area | region recognition circuit. It is a figure which shows the outline | summary of a motion determination process and a data conversion process. It is a flowchart which shows the process sequence of a burn-in correction function. It is a figure which shows the system example which combined the display apparatus and image processing apparatus which mount a burn-in correction apparatus. It is a figure which shows the structural example of the display apparatus which mounts a burn-in correction apparatus. It is a figure which shows the example of a system which combined the image processing apparatus which mounts the burn-in correction apparatus, and a self-luminous type display apparatus. It is a figure which shows the structural example of the image processing apparatus which mounts the burn-in correction apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Correction processing circuit 11 Cumulative addition circuit 12 Cumulative addition value memory 13 Difference value calculation circuit 14 Correction value calculation circuit 15 Correction processing circuit 16 Still area recognition circuit 17, 18 Frame memory 19 Motion determination circuit 20 Data conversion circuit

Claims (14)

For each pixel, a cumulative adder that calculates the cumulative emission amount of the input pixel data;
A difference value calculation unit that calculates a difference value between the minimum value of the cumulative light emission amount for all pixels and the cumulative light emission amount for each pixel;
A correction value calculation unit that calculates the correction value per process by dividing the difference value calculated for each pixel by the number of processes within the correction period;
It said correction value calculated for each pixel, have a correction processing section for subtracting the corresponding input pixel data,
The correction value calculation unit uses the cumulative light emission amount of a pixel that gives the smallest cumulative light emission amount among all the pixels as a reference value, and the correction value having a larger value as a pixel having a larger degree of deviation of the cumulative light emission amount from the reference value. burn-in correction system of the self-luminous display device for calculating. A cumulative addition unit that calculates a cumulative light emission amount of input subpixel data for a corresponding subpixel for each color constituting the subpixel;
A difference value calculation unit that calculates a difference value between the minimum value of the cumulative light emission amount for all subpixels corresponding to each color and the cumulative light emission amount for each subpixel;
A correction value calculation unit that calculates the correction value per process by dividing the difference value calculated for each sub-pixel by the number of processes within the correction period;
It said correction value calculated for each subpixel have a correction processing section for subtracting the corresponding input sub-pixel data,
The correction value calculation unit uses, for each color constituting the subpixel, a cumulative emission amount of the subpixel that gives the smallest cumulative emission amount among all the subpixels corresponding to each color as a reference value, and a cumulative emission amount with respect to the reference value A burn-in correction device for a self-luminous display device that calculates the correction value having a larger value as a sub-pixel has a larger degree of deviation . A motion determination unit that determines whether each input pixel data corresponds to a still image region or a moving image region;
2. The data conversion unit according to claim 1, further comprising: a data conversion unit that directly provides input pixel data corresponding to a still image region to the cumulative addition unit, corrects input pixel data corresponding to a moving image region to zero, and applies the data to the cumulative addition unit. Burn-in correction device. A motion determination unit that determines whether each input sub-pixel data corresponds to a still image region or a moving image region;
3. A data conversion unit that directly provides input subpixel data corresponding to a still image region to the cumulative addition unit, corrects input subpixel data corresponding to a moving image region to zero, and supplies the subpixel data to the cumulative addition unit. The burn-in correction device described . For each pixel, a cumulative adder that calculates the cumulative emission amount of the input pixel data;
A difference value calculation unit that calculates a difference value between the minimum value of the cumulative light emission amount for all pixels and the cumulative light emission amount for each pixel;
A correction value calculation unit that calculates the correction value per process by dividing the difference value calculated for each pixel by the number of processes within the correction period;
A correction processing unit that subtracts the correction value calculated for each pixel from the corresponding input pixel data;
Have a display device for displaying an image corresponding to the output pixel data of the correction processing unit,
The correction value calculation unit uses the cumulative light emission amount of a pixel that gives the smallest cumulative light emission amount among all the pixels as a reference value, and the correction value having a larger value as a pixel having a larger degree of deviation of the cumulative light emission amount from the reference value. A self-luminous display device to calculate . A cumulative addition unit that calculates a cumulative light emission amount of input subpixel data for a corresponding subpixel for each color constituting the subpixel;
A difference value calculation unit that calculates a difference value between the minimum value of the cumulative light emission amount for all subpixels corresponding to each color and the cumulative light emission amount for each subpixel;
A correction value calculation unit that calculates the correction value per process by dividing the difference value calculated for each sub-pixel by the number of processes within the correction period;
A correction processing unit that subtracts the correction value calculated for each subpixel from the corresponding input subpixel data;
Have a display device for displaying an image corresponding to the output sub-pixel data of the correction processing unit,
The correction value calculation unit uses, for each color constituting the subpixel, a cumulative emission amount of the subpixel that gives the smallest cumulative emission amount among all the subpixels corresponding to each color as a reference value, and a cumulative emission amount with respect to the reference value self-luminous display device for calculating the correction value of having a larger value deviance larger subpixels. For each pixel, a cumulative adder that calculates the cumulative emission amount of the input pixel data;
A difference value calculation unit that calculates a difference value between the minimum value of the cumulative light emission amount for all pixels and the cumulative light emission amount for each pixel;
A correction value calculation unit that calculates the correction value per process by dividing the difference value calculated for each pixel by the number of processes within the correction period;
A correction processing unit that subtracts the correction value calculated for each pixel from the corresponding input pixel data;
The output pixel data of the correction processing unit possess an output section for outputting the self-luminous display device,
The correction value calculation unit uses the cumulative light emission amount of a pixel that gives the smallest cumulative light emission amount among all the pixels as a reference value, and the correction value having a larger value as a pixel having a larger degree of deviation of the cumulative light emission amount from the reference value. An image processing device to calculate . A cumulative addition unit that calculates a cumulative light emission amount of input subpixel data for a corresponding subpixel for each color constituting the subpixel;
A difference value calculation unit that calculates a difference value between the minimum value of the cumulative light emission amount for all subpixels corresponding to each color and the cumulative light emission amount for each subpixel;
A correction value calculation unit that calculates the correction value per process by dividing the difference value calculated for each sub-pixel by the number of processes within the correction period;
A correction processing unit that subtracts the correction value calculated for each subpixel from the corresponding input subpixel data;
An output unit that outputs the output subpixel data of the correction processing unit to a self-luminous display device;
The correction value calculation unit uses, for each color constituting the subpixel, a cumulative emission amount of the subpixel that gives the smallest cumulative emission amount among all the subpixels corresponding to each color as a reference value, and a cumulative emission amount with respect to the reference value An image processing apparatus that calculates the correction value having a larger value as a subpixel has a larger degree of deviation . For each pixel, a cumulative addition process for calculating the cumulative emission amount of the input pixel data,
A difference value calculation process for calculating a difference value between the minimum value of the cumulative light emission amount for all pixels and the cumulative light emission amount for each pixel;
A correction value calculation process for calculating the correction value per process by dividing the difference value calculated for each pixel by the number of processes within the correction period;
Correction processing for subtracting the correction value calculated for each pixel from the corresponding input sub-pixel data,
The correction value calculation processing uses the cumulative light emission amount of the pixel that gives the smallest cumulative light emission amount among all the pixels as a reference value, and the correction value having a larger value as a pixel having a larger degree of deviation of the cumulative light emission amount from the reference value. correction method burn of the self-luminous display device for calculating. For each color constituting the subpixel, a cumulative addition process for calculating a cumulative emission amount of the input subpixel data for the corresponding subpixel,
A difference value calculation process for calculating a difference value between the minimum value of the cumulative light emission amount for all subpixels corresponding to each color and the cumulative light emission amount for each subpixel;
A correction value calculation process for calculating the correction value per process by dividing the difference value calculated for each subpixel by the number of processes in the correction period;
It said correction value calculated for each subpixel have a correction process of subtracting from the corresponding input sub-pixel data,
The correction value calculation processing uses, for each color constituting the subpixel, a cumulative emission amount of the subpixel that gives the smallest cumulative emission amount among all the subpixels corresponding to each color as a reference value, and a cumulative emission amount with respect to the reference value A burn-in correction method for a self-luminous display device that calculates the correction value having a larger value for a sub-pixel having a larger degree of deviation . In a computer that processes pixel data that drives a self-luminous display device,
For each pixel, a cumulative addition process for calculating the cumulative emission amount of the input pixel data,
A difference value calculation process for calculating a difference value between the minimum value of the cumulative light emission amount for all pixels and the cumulative light emission amount for each pixel;
A correction value calculation process for calculating the correction value per process by dividing the difference value calculated for each pixel by the number of processes within the correction period;
A correction process for subtracting the correction value calculated for each pixel from the corresponding input sub-pixel data ,
In the correction value calculation process, for each color constituting the subpixel, the cumulative light emission amount of the subpixel that gives the smallest cumulative light emission amount among all the subpixels corresponding to each color is used as a reference value, and the cumulative light emission amount with respect to the reference value A program for calculating the correction value having a larger value for a sub-pixel having a larger degree of deviation . A cumulative addition process for calculating a cumulative light emission amount of input subpixel data for a corresponding subpixel for each color constituting the subpixel in a computer that processes subpixel data for driving a self-luminous display device; ,
A difference value calculation process for calculating a difference value between the minimum value of the cumulative light emission amount for all subpixels corresponding to each color and the cumulative light emission amount for each subpixel;
A correction value calculation process for calculating the correction value per process by dividing the difference value calculated for each subpixel by the number of processes in the correction period;
A correction process for subtracting the correction value calculated for each subpixel from the corresponding input subpixel data .
In the correction value calculation process, for each color constituting the subpixel, the cumulative light emission amount of the subpixel that gives the smallest cumulative light emission amount among all the subpixels corresponding to each color is used as a reference value, and the cumulative light emission amount with respect to the reference value A program for calculating the correction value having a larger value for a sub-pixel having a larger degree of deviation . The program according to claim 11 is recorded.
Computer readable recording medium. Recording a program according to claim 1 2
Computer readable recording medium.

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