JP2012242486A - Display device, display method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an appropriate automatic brightness limiter (ABL) to be performed.SOLUTION: A display device includes: a display section composed of a plurality of self-luminous devices; and a plurality of power supply sections for supplying power for each color of the plurality of self-luminous devices or for each color combination thereof. Alternatively, a plurality of power supply sections is provided to supply power for each of a plurality of regions where the display section is divided. In addition, there are provided an average picture level (APL) calculation section for calculating an APL depending on the number of the plurality of power supply sections, and an ABL section for performing the ABL depending on the APL value calculated by the APL calculation section. This technique is applicable to a panel using a self-luminous device.

Description

  The present technology relates to a display device, a display method, and a program. Specifically, the present invention relates to a display device, a display method, and a program that can appropriately protect a panel for displaying video and the like and a power source.

  In a self-luminous display using a self-luminous display device such as an LED display, the display power consumption fluctuates generally due to fluctuations in the brightness of the displayed image. This is because when a bright image is displayed, the amount of current flowing through the display portion increases because it is necessary to emit light more strongly or more times. Conversely, when a dark image is displayed, the amount of current flowing through the display unit is reduced because the light is emitted weaker or a smaller number of times.

  A method for reducing power consumption in a self-luminous display has been proposed (see, for example, Patent Document 1). In Patent Document 1, one screen of a video signal is divided into a plurality of blocks, and the average value of the luminance of the video signal in each block is obtained to obtain the local contrast in the screen. This local contrast is given in advance. It has been proposed to obtain the current limit amount based on the reference value.

JP-A-10-215424

  In recent years, the size and size of displays have been increasing. As the display becomes larger and finer, power consumption tends to increase. Further reduction of power consumption is required, and finer power control is desired. In Patent Document 1, the current limit amount is obtained as described above. However, since the control is performed by controlling one power source, the load on the one power source may be concentrated.

  In the self-luminous display, as described above, since the power load on the power source depends on the display pattern, the power load fluctuates greatly. In order to protect the panel and the power supply from such fluctuations in the power load, a brightness limit is applied to the entire panel by an ABL (Automatic Brightness Limiter). However, if the load on one power supply is concentrated, there is a possibility that such a situation that the panel and the power supply cannot be properly protected can occur. Therefore, it is desired to provide a mechanism for protecting further panels and power supplies.

  The present technology has been made in view of such a situation, and is intended to suppress power consumption and perform control for protecting a panel and a power source.

  A first display device according to an aspect of the present technology includes a display unit including a plurality of self-light-emitting devices, and a plurality of powers that supply power for each color of the plurality of self-light-emitting devices or for each combination of colors. And a supply unit.

  The display unit may be divided into a plurality of regions, and the power supply unit may be further provided for each region.

  An APL calculation unit that calculates an APL (Average Picture Level) corresponding to the number of the plurality of power supply units, and an ABL unit that executes an automatic brightness limiter (ABL) according to the APL amount calculated by the APL calculation unit Can be further provided.

  A first display method according to an aspect of the present technology is a display method of a display device including a display unit including a plurality of self-light-emitting devices and a power source that supplies power to the display unit. And a step of controlling power supply from each power source, provided for each color or combination of colors.

  A first program according to an aspect of the present technology is provided in a display device including a display unit including a plurality of self-light-emitting devices and a power source that supplies power to the display unit, and the power source includes the plurality of self-light-emitting devices. The computer-readable program is provided for each color or each color combination, and causes a process including a step of controlling power supply from each power source to be executed.

  In the first display device, the display method, and the program according to an aspect of the present technology, a power source is provided for each color of the self-light-emitting device of the display unit including a plurality of self-light-emitting devices or for each combination of colors.

  A second display device according to an aspect of the present technology includes a display unit including a plurality of self-light-emitting devices, and a plurality of power supply units that divide the display unit into a plurality of regions and supply power to the regions. With.

  The power supply unit may be further provided for each color of the plurality of self-luminous devices or for each combination of colors.

  An APL calculation unit that calculates an APL (Average Picture Level) corresponding to the number of the plurality of power supply units, and an ABL unit that executes an automatic brightness limiter (ABL) according to the APL amount calculated by the APL calculation unit Can be further provided.

  A second display method according to an aspect of the present technology is a display method of a display device including a display unit including a plurality of self-light-emitting devices and a power source that supplies power to the display unit. And dividing the section into a plurality of regions, and including a step of controlling power supply from each power source provided for each region.

  A second program according to an aspect of the present technology includes a display unit including a display unit including a plurality of self-light-emitting devices and a power source that supplies power to the display unit, and the power source includes a plurality of the display units. A computer-readable program for executing a process that is divided into regions and provided for each of the regions and includes a step of controlling supply of power from each power source.

  In the second display device, the display method, and the program according to one aspect of the present technology, a display unit including a plurality of self-luminous devices is divided into a plurality of regions, and a power source is provided for each region.

  According to one aspect of the present technology, for example, power consumption in a display using a self-luminous device can be suppressed, and a panel and a power source can be protected.

It is a figure for demonstrating a self-light-emitting display. It is a figure for demonstrating a self-light-emitting display. It is a figure for demonstrating the part and power supply which perform ABL. It is a figure which shows arrangement | positioning of the power supply in 1st Embodiment. It is a figure which shows the structural example of the part which performs ABL in 1st Embodiment. It is a figure which shows arrangement | positioning of the power supply in 2nd Embodiment. It is a figure which shows the structural example of the part which performs ABL in 2nd Embodiment. It is a figure which shows arrangement | positioning of the power supply in 3rd Embodiment. It is a figure which shows the structural example of the part which performs ABL in 3rd Embodiment. It is a figure which shows arrangement | positioning of the power supply in 4th Embodiment. It is a figure which shows the structural example of the part which performs ABL in 4th Embodiment. It is a figure which shows arrangement | positioning of the power supply in 5th Embodiment. It is a figure which shows the structural example of the part which performs ABL in 5th Embodiment. It is a figure for demonstrating a recording medium.

  Hereinafter, embodiments of the present technology will be described with reference to the drawings.

  The present technology described below can be applied to a self-luminous display including self-luminous devices. Examples of the self-luminous display include CRT (Cathode Ray Tube), plasma display, LED (Light Emitting Diode) display, field emission display, and organic EL display. Here, a panel using an organic EL device (hereinafter referred to as an EL panel) will be described as an example. First, the basic configuration and operation of the EL panel will be described.

[Configuration of self-luminous display]
FIG. 1 is a block diagram illustrating a configuration example of a basic EL panel. The EL panel 100 in FIG. 1 drives a pixel array unit 102 in which N × M pixels (pixel circuits) 101- (1,1) to 101- (N, M) are arranged in a matrix form. It comprises a horizontal selector (HSEL) 103, a write scanner (WSCN) 104, and a power supply scanner (DSCN) 105, which are driving units. In order to simplify the description, N and M will be described as being a predetermined even number below, but the present invention is not limited to this.

  The EL panel 100 also includes M scanning lines WSL10-1 to 10-M, M power supply lines DSL10-1 to 10-M, and N video signal lines DTL10-1 to 10-N. In the following description, scanning lines WSL10-1 to 10-M, video signal lines DTL10-1 to 10-N, pixels 101- (1,1) to 101- (N, M), or power supply lines DSL10-1 to DSL10-1 When there is no need to particularly distinguish each of 10-M, they are simply referred to as a scanning line WSL10, a video signal line DTL10, a pixel 101, or a power supply line DSL10.

  Among the pixels 101- (1,1) to 101- (N, M), the pixels 101- (1,1) to 101- (N, 1) in the first row are scanned by the scanning line WSL10-1. 104 and the power supply scanner 105 are connected to the power supply line DSL10-1. Among the pixels 101- (1,1) to 101- (N, M), the pixels 101- (1, M) to 101- (N, M) in the Mth row are the scanning lines WSL10-M. The light scanner 104 is connected to the power supply scanner 105 via the power supply line DSL10-M. The same applies to the other pixels 101 arranged in the row direction of the pixels 101- (1, 1) to 101- (N, M).

  Among the pixels 101- (1,1) to 101- (N, M), the pixels 101- (1,1) to 101- (1, M) in the first column are video signal lines DTL10-1. Is connected to the horizontal selector 103. Among the pixels 101- (1,1) to 101- (N, M), the pixels 101- (N, 1) to 101- (N, M) in the Nth column are horizontal by the video signal line DTL10-N. The selector 103 is connected. The same applies to the other pixels 101 arranged in the column direction of the pixels 101- (1, 1) to 101- (N, M).

  The write scanner 104 sequentially supplies control signals to the scanning lines WSL10-1 to 10-M in a horizontal cycle (1H) to scan the pixels 101 line by line. The power supply scanner 105 supplies a power supply voltage of the first potential (Vcc described later) or the second potential (Vss described later) to the power supply lines DSL10-1 to 10-M in accordance with the line sequential scanning. The horizontal selector 103 switches the signal potential Vsig that becomes a video signal and the reference potential Vofs within each horizontal period (1H) in accordance with the line sequential scanning, and supplies them to the columnar video signal lines DTLs 10-1 to 10-M. .

  A panel module is configured by adding a driver IC (Integrated Circuit) composed of a source driver and a gate driver to the EL panel 100 configured as shown in FIG. 1, and further, the panel module includes a power supply circuit, an image LSI ( Large scale integration) is added to the display device. The display device including the EL panel 100 can be used as a display unit of, for example, a mobile phone, a digital still camera, a digital video camera, a television receiver, or a printer.

  FIG. 2 shows a detailed configuration of the pixel 101a by enlarging one pixel 101 (referred to as a pixel 101a) among the N × M pixels 101 included in the EL panel 100 shown in FIG. It is a block diagram. 2, the scanning line WSL10, the video signal line DTL10, and the power supply line DSL10 connected to the pixel 101a are pixels 101- (n, m) (n = 1, 2, .., N, m = 1, 2,..., M), the scanning line WSL10- (n, m), the video signal line DTL10- (n, m), and the power line DSL10- (n , M).

  A pixel 101a illustrated in FIG. 2 includes a sampling transistor 21, a driving transistor 22, a storage capacitor 23, and a light emitting element 24 which is an organic EL element. Here, the sampling transistor 21 is an N-channel transistor, and the driving transistor 22 is a P-channel transistor. The gate of the sampling transistor 21 is connected to the scanning line WSL10, the drain of the sampling transistor 21 is connected to the video signal line DTL10, and the source is connected to the gate g of the driving transistor 22.

  The source s of the driving transistor 22 is connected to the power supply line DSL10, and the drain d is connected to the anode of the light emitting element 24. The storage capacitor 23 is connected between the source s and the gate g of the driving transistor 22. Further, the cathode of the light emitting element 24 is grounded.

  Since the organic EL device is a current light emitting element, by controlling the value of the current flowing through the light emitting element 24, it is possible to obtain color gradation. In the pixel 101 a of FIG. 2, the value of the current flowing through the light emitting element 24 is controlled by changing the gate application voltage of the driving transistor 22.

  As described above, the color gradation in the pixel 101a is changed by changing the gate application voltage of the driving transistor 22. By changing the gate applied voltage for each of N × M pixels 101a included in the EL panel 100, the color gradation of the image displayed on the EL panel 100 is controlled. Therefore, in a panel using a self-luminous device, the power load on the power supply depends on the pattern displayed on the panel. Therefore, depending on the variation of the pattern, it is assumed that the variation of the power load becomes severe. In order to protect the panel and the power supply from the influence of such fluctuation, the entire panel is subjected to a luminance limit by ABL.

  ABL is an abbreviation for Automatic Brightness Limiter, and is a function for controlling the luminance signal of a video signal. For example, as shown in FIG. 3, the ABL is configured to input a video signal and output a signal obtained by executing limit processing on the video signal to the panel. That is, a video signal received by an antenna (not shown) and subjected to processing such as decoding is input to ABL 201 and APL 202.

  APL is an abbreviation for Average Picture Level and represents an average picture level. In APL 202, the average image level of one screen based on the video signal is calculated, and in accordance with the value of the level, ABL 201 executes a luminance signal limit process on the video signal. The video signal subjected to the limit processing is supplied to the panel 203, and a video (image) based on the video signal is displayed on the panel 203. The panel 203 can be composed of the EL panel 100 described above.

  The power source 204 supplies power to the panel 203. As described above, the power supplied to the panel 203 varies depending on the picture displayed on the panel 203, but the panel 203 and the power source 204 are protected by limiting the video signal in the ABL 201. The

  In this case, since the power supply 204 that supplies power to the panel 203 is one system for the pixels on the entire screen as shown in FIG. 3, the APL measurement result on the entire screen is used to multiply the ABL. It is done. Therefore, the load tends to concentrate on the single power supply 204. If the panel 203 has a large screen or becomes finer, the load tends to concentrate on the power supply 204 of one system, and the panel 203 and the power supply 204 may not be properly protected. Therefore, as will be described below, by providing a plurality of power supply systems, it is possible to further reduce power consumption and to perform finer power control.

[About the first embodiment]
FIG. 4 is a diagram for explaining the first embodiment. An area that is the same as the display area of the panel 301 is referred to as an area 302. Three power supplies are connected to the panel 301, and power is supplied to predetermined pixels from the respective power supplies. The R power source 311 supplies power to all the R pixels in the region 302, the G power source 312 supplies power to all the G pixels in the region 302, and the B power source 313 includes: Power is supplied to all the B pixels in the region 302.

  Here, R, G, and B represent the three primary colors of red, green, and blue, respectively, and the image is created using additive color mixing that reproduces a wide range of colors by mixing these three primary colors. The case of displaying will be described as an example. However, this is not a description indicating that the present technology is limited to the case of three primary colors. The present technology can be used when displaying an image in a plurality of colors.

  As shown in FIG. 4, R pixels, G pixels, and B pixels are provided by independently providing power to each of the R pixels, G pixels, and B pixels constituting the panel 301 (providing three power sources). It is possible to prevent the load from being concentrated on one power source and to distribute the load, rather than providing a single power source for supplying power collectively.

  In the first embodiment, as described above, a plurality of self-light-emitting devices are provided, and a plurality of power supplies that supply power for each color of the plurality of self-light-emitting devices on the panel 301 that displays images and videos are provided. It has been.

  When a plurality of power supplies are provided in this way, FIG. 5 shows a system for calculating ABL, which is a function for controlling the luminance signal of the video signal, and an average image level (APL) for the ABL to control. System. The system shown in FIG. 5 includes an ABL 331 and an APL calculation unit 332. The ABL 331 has a function of controlling the luminance signal of the input video signal as in the case described above. Specifically, the ABL amount corresponding to the panel luminance (current amount) is determined from the average image level value supplied from the APL calculation unit 332 for the input video signal, and correction is performed.

  The ABL 331 includes an R correction unit 341, a G correction unit 342, and a B correction unit 343. The R correction unit 341 corrects a signal related to R (red) (hereinafter referred to as an R signal) among the input signals. The G correction unit 342 corrects a signal related to G (green) (hereinafter referred to as a G signal) among the input signals. The B correction unit 343 corrects a signal related to B (blue) (hereinafter referred to as a B signal) among the input signals.

  The APL calculation unit 332 calculates an average image level. The APL calculation unit 332 includes an RGB level full screen average calculation unit 351, an R level full screen average calculation unit 352, a G level full screen average calculation unit 353, a B level full screen average calculation unit 354, a selection circuit 355, and a selection circuit 356. It is set as the structure containing.

  The RGB level full-screen average calculation unit 351 calculates an average value of the levels of all R pixels, G pixels, and B pixels in the region 302 (hereinafter referred to as RGB levels). The R level full screen average calculation unit 352 calculates an average value of the levels of all R pixels in the region 302 (hereinafter referred to as R level). The G level full screen average calculation unit 353 calculates an average value of the levels of all G pixels in the region 302 (hereinafter referred to as G level). The B level full screen average calculation unit 354 calculates the average value of the levels of all the B pixels in the region 302 (hereinafter referred to as B level).

  As described above, when three power sources of R pixel, G pixel, and B pixel are provided, an R level full screen average calculation unit 352 and a G level full screen average calculation unit that calculate the average value of the level in each pixel. 353 and a B level full screen average calculation unit 354 are provided. Also, an RGB level full-screen average calculation unit 351 that calculates an average value of levels in each of the R pixel, the G pixel, and the B pixel is provided.

  The average value of the R level calculated in the R level full screen average calculation unit 352, the average value of the G level full screen calculated in the G level full screen average calculation unit 353, and the B level full screen average calculation unit The average value of the entire B level screen calculated in 354 is supplied to the selection circuit 355. In the selection circuit 355, the average value of the maximum values is selected from the input average values, and the average value is output to the selection circuit 356.

  The selection circuit 356 also receives the average value of the RGB levels in the entire screen calculated by the RGB level full screen average calculation unit 351. The selection circuit 356 outputs the average value of the average value from the RGB level full screen average calculation unit 351 and the average value from the selection circuit 355 to the ABL 331 as the APL amount as the APL amount. The ABL 331 determines the ABL amount according to the panel luminance (current amount) from the supplied APL amount, and with respect to the signals input by the R correction unit 341, the G correction unit 342, and the B correction unit 343. Apply correction.

  In this way, when multiple power supplies are provided, the number of power supplies provided and the APL calculation conditions are linked so that the ABL operation is appropriately realized without concentrating the load on one power supply. It becomes possible to do.

  In the case of the first embodiment, an R level full-screen average is provided, in which three power sources, that is, an R power source 311, a G power source 312, and a B power source 313, are indirectly measured. A calculation unit 352, a G level full screen average calculation unit 353, and a B level full screen average calculation unit 354 are provided.

  With such a configuration, the load of power can be measured for each color, so that it is possible to control power more finely. In addition, it is possible to protect the power supply by distributing the power supply, and furthermore, it is possible to measure the load of each power supply and apply an appropriate ABL, so that more appropriate power supply and panel protection can be performed It becomes possible.

[Second Embodiment]
FIG. 6 is a diagram for explaining the second embodiment. An area that is the same as the display area of the panel 401 is referred to as an area 402. Two power sources are connected to the panel 401, and power is supplied to predetermined pixels from the respective power sources. The R power source 411 supplies power to all the R pixels in the region 402, and the GB power source 412 supplies power to all the G pixels and B pixels in the region 402. Yes.

  As shown in FIG. 6, power is supplied to the R pixel, the G pixel, and the B pixel collectively by providing two power sources for the R pixel that constitutes the panel 401 and the power source for the G pixel and the B pixel. Rather than providing one power supply to supply, it is possible to prevent the load from being concentrated on one power supply and to distribute the load.

  In the second embodiment, as described above, a plurality of power sources configured to include a plurality of self-light-emitting devices and supply power for each color combination of the plurality of self-light-emitting devices on the panel 401 that displays images and videos. Is provided.

  When two power sources are provided in this way, ABL, which is a function for controlling the luminance signal of the video signal, and a system for calculating an average image level (APL) for the ABL to control are shown in FIG. The system will be as shown. Since the basic configuration is the same as that of the first embodiment, description thereof will be omitted as appropriate.

  The system shown in FIG. 7 includes an ABL 431 and an APL calculation unit 432. The ABL 431 determines the ABL amount corresponding to the panel luminance (current amount) from the average value of the level supplied from the APL calculation unit 432 and applies correction to the input video signal. The ABL 431 includes an R correction unit 441, a G correction unit 442, and a B correction unit 443. The R correction unit 441 corrects the input R signal, the G correction unit 442 corrects the input G signal, and the B correction unit 443 corrects the input B signal.

  The APL calculation unit 432 calculates an average image level. The APL calculation unit 432 includes an RGB level full screen average calculation unit 451, an R level full screen average calculation unit 452, a GB level full screen average calculation unit 453, a selection circuit 454, and a selection circuit 455.

  The RGB level full-screen average calculation unit 451 calculates an average value of the levels of all R pixels, G pixels, and B pixels in the region 402. The R level full screen average calculation unit 452 calculates the average value of the levels of all the R pixels in the region 402. The GB level full screen average calculation unit 453 calculates the average value of the levels of all G pixels and B pixels in the region 402.

  In this way, when two power sources for the R pixel and the G pixel and the B pixel power source are provided, the R level full-screen average calculation unit 452 that calculates the average value of the R pixel level, the G pixel And a GB level full screen average calculation unit 453 for calculating an average value of the levels of the B pixels. Further, an RGB level full-screen average calculation unit 451 that calculates an average value of levels in each of the R pixel, the G pixel, and the B pixel is provided.

  The average value for the R level full screen calculated by the R level full screen average calculation unit 452 and the average value for the G level and B level full screen calculated by the GB level full screen average calculation unit 453 are sent to the selection circuit 454. Supplied. In the selection circuit 454, the average value of the maximum values is selected from the input average values, and the average value is output to the selection circuit 455.

  The selection circuit 455 also receives the average value of the levels on the entire screen calculated by the RGB level full-screen average calculation unit 451. The selection circuit 455 outputs, to the ABL 431, the average value of the larger value among the average value from the RGB level full screen average calculation unit 451 and the average value from the selection circuit 455 as the APL amount. The ABL 431 determines the ABL amount according to the panel luminance (current amount) from the supplied APL amount, and with respect to the signals input by the R correction unit 441, the G correction unit 442, and the B correction unit 444. Apply correction.

  As described above, when a plurality of power supplies are provided, the operation of ABL can be realized without concentrating the load on one power supply by linking the number of power supplies provided and the APL calculation conditions. Is possible.

  In the case of the second embodiment, two power sources, an R power source 411 and a GB power source 412, are provided, and an R level full-screen average calculating unit 452 for indirectly measuring the load applied to each of these power sources and GB A level full screen average calculation unit 453 is provided.

  With such a configuration, the load of power can be measured for each color combination, so that it is possible to perform more detailed power control. In addition, it is possible to protect the power supply by distributing the power supply, and furthermore, it is possible to measure the load of each power supply and apply an appropriate ABL, so that more appropriate power supply and panel protection can be performed It becomes possible.

[About the third embodiment]
FIG. 8 is a diagram for explaining the third embodiment. The left half area of the display area of the panel 501 is an area 502 and the right half area is an area 503. Two power supplies are connected to the panel 501, and power is supplied to predetermined pixels from the respective power supplies. The left screen power supply 511 supplies power to all R pixels, G pixels, and B pixels in the region 502, and the right screen power supply 512 supplies all R pixels, G pixels, And it is set as the structure which supplies electric power with respect to B pixel.

  As shown in FIG. 8, by providing two power sources for the pixel located on the left side of the panel 501 and the power source for the pixel located on the right side, power is supplied to the pixels of the entire panel 1 Rather than providing a system power supply, it is possible to prevent the load from being concentrated on one power supply and to distribute the load.

  In the third embodiment, as described above, the panel 501 configured to include a plurality of self-light-emitting devices, which displays an image or video, is divided into a plurality of regions, and power is supplied to each self-light-emitting device in each region. There are a plurality of power supplies for supplying.

  When two power sources are provided in this way, ABL, which is a function for controlling the luminance signal of the video signal, and a system for calculating the average image level (APL) for the ABL to control are shown in FIG. The system will be as shown. Since the basic configuration is the same as that in the first or second embodiment, the description thereof will be omitted as appropriate.

  The system shown in FIG. 9 includes an ABL 531 and an APL calculation unit 532. The ABL 531 determines the ABL amount corresponding to the panel luminance (current amount) from the average value of the level supplied from the APL calculation unit 532 and applies correction to the input video signal. The ABL 531 includes an R correction unit 541, a G correction unit 542, and a B correction unit 543. The R correction unit 541 corrects the input R signal, the G correction unit 542 corrects the input G signal, and the B correction unit 543 corrects the input B signal.

  The APL calculation unit 532 calculates an average image level. The APL calculation unit 532 includes an RGB level full screen average calculation unit 551, an RGB level left screen average calculation unit 552, an RGB level right screen average calculation unit 553, a selection circuit 554, and a selection circuit 555.

  The RGB level full-screen average calculation unit 551 calculates the average value of the levels of all R pixels, G pixels, and B pixels in the region 502. The RGB level right screen average calculation unit 552 calculates the average value of the levels of all R pixels, G pixels, and B pixels in the left region 502 of the panel 501. The RGB level right screen average calculation unit 553 calculates an average value of the levels of all R pixels, G pixels, and B pixels in the right region 503 of the panel 501.

  In order to determine whether the pixel is in the left region 502 or the right region 503 of the panel 501, the APL calculation unit 532 receives the input pixel (level) together with the video signal. Position information is also input. Based on this position information, the RGB level left screen average calculation unit 552 and the RGB level right screen average calculation unit 553 determine whether or not they are pixels to be processed, and when determining that they are pixels to be processed Only process (add).

  A switch is provided in front of the RGB level left screen average calculation unit 552 and the RGB level right screen average calculation unit 553, and the switches are switched based on position information, so that the RGB level left screen average calculation unit 552 and the RGB level right screen The average calculation unit 553 may be supplied with pixels (levels) processed in the respective units.

  As described above, when two power sources, ie, a left screen power source and a right screen power source are provided, an RGB level left screen average calculating unit 552 that calculates an average value of pixel levels in the left screen, and a right screen An RGB level right screen average calculation unit 553 is provided for calculating an average value of the pixel levels. In addition, an RGB level full screen average calculation unit 551 is provided that calculates an average value of pixel levels on the full screen.

  The average value of the R level, G level, and B level calculated in the RGB level left screen average calculation unit 552 and the right value of the R level, G level, and B level calculated in the RGB level right screen average calculation unit 553 The average value on the screen is supplied to the selection circuit 554. In the selection circuit 554, the average value having a larger value is selected from the input average values and is output to the selection circuit 555.

  The selection circuit 555 also receives the average value of the levels on the entire screen calculated by the RGB level full-screen average calculation unit 551. The selection circuit 555 outputs the average value of the larger value among the average value from the RGB level full screen average calculation unit 551 and the average value from the selection circuit 554 to the ABL 531 as the APL amount. The ABL 531 determines the ABL amount corresponding to the panel luminance (current amount) from the supplied APL amount, and the signal inputted in each part of the R correction unit 541, the G correction unit 542, and the B correction unit 543 Apply correction.

  As described above, when a plurality of power supplies are provided, the operation of ABL can be realized without concentrating the load on one power supply by linking the number of power supplies provided and the APL calculation conditions. Is possible.

  In the case of the third embodiment, an RGB level left screen average calculation unit 552 that provides two power sources, a left screen power source 511 and a right screen power source 512, and indirectly measures the load applied to each power source. And an RGB level right screen average calculation unit 553 are provided.

  With such a configuration, the load of power can be measured for each region, so that it is possible to control power more finely. In addition, it is possible to protect the power supply by distributing the power supply, and furthermore, it is possible to measure the load of each power supply and apply an appropriate ABL, so that more appropriate power supply and panel protection can be performed It becomes possible.

[About the fourth embodiment]
FIG. 10 is a diagram for explaining the fourth embodiment. An upper half area of the display area of the panel 601 is an area 602, and a lower half area is an area 603. Two power supplies are connected to the panel 601, and power is supplied to predetermined pixels from the respective power supplies. The upper screen power source 611 supplies power to all the R pixels, G pixels, and B pixels in the region 602, and the lower screen power source 612 includes all the R pixels, G pixels, And it is set as the structure which supplies electric power with respect to B pixel.

  As shown in FIG. 10, by providing two power sources for the pixels located on the upper side of the panel 601 and the power sources for the pixels located on the lower side, power is collectively supplied to the pixels of the entire panel. Rather than providing a single power supply, it is possible to prevent the load from being concentrated on one power supply and to distribute the load.

  In the fourth embodiment, as described above, the panel 601 that includes a plurality of self-luminous devices, displays an image or video, is divided into a plurality of areas, and the power for each self-luminous device in each of these areas. There are a plurality of power supplies for supplying.

  When two power sources are provided in this way, ABL, which is a function for controlling the luminance signal of the video signal, and a system for calculating the average image level (APL) for the ABL to control are shown in FIG. The system will be as shown. Since the basic configuration is the same as that of the first to third embodiments, the description thereof will be omitted as appropriate.

  The system shown in FIG. 11 includes an ABL 631 and an APL calculation unit 632. The ABL 631 determines the ABL amount corresponding to the panel luminance (current amount) from the average level supplied from the APL calculation unit 632 and applies correction to the input video signal. The ABL 631 includes an R correction unit 641, a G correction unit 642, and a B correction unit 643. The R correction unit 641 corrects the input R signal, the G correction unit 642 corrects the input G signal, and the B correction unit 643 corrects the input B signal.

  The APL calculation unit 632 calculates an average image level. The APL calculation unit 632 includes an RGB level full screen average calculation unit 651, an RGB level upper screen average calculation unit 652, an RGB level lower screen average calculation unit 653, a selection circuit 654, and a selection circuit 655.

  The RGB level full screen average calculation unit 651 calculates the average value of the levels of all R pixels, G pixels, and B pixels in the region 602. The RGB level upper screen average calculation unit 652 calculates an average value of the levels of all R pixels, G pixels, and B pixels in the upper region 602 of the panel 601. An RGB level lower screen average calculation unit 653 calculates an average value of the levels of all R pixels, G pixels, and B pixels in the lower region 603 of the panel 601.

  In order to determine whether the pixel is in the upper region 602 or the lower region 603 of the panel 601, the APL calculation unit 632 receives a pixel (level) input together with the video signal. The position information where is located is also input. Based on this position information, the RGB level upper screen average calculation unit 652 and the RGB level lower screen average calculation unit 653 determine whether or not the pixel is a pixel to be processed. Only process (add).

  In the case of the fourth embodiment as well, as in the third embodiment, a switch may be provided before the RGB level upper screen average calculation unit 652 and the RGB level lower screen average calculation unit 653. Then, by switching the switch based on the position information, the RGB level upper screen average calculation unit 652 and the RGB level lower screen average calculation unit 653 may be supplied with pixels to be processed in the respective units. good.

  As described above, when two power sources, ie, an upper screen power source and a lower screen power source are provided, an RGB level upper screen average calculating unit 652 that calculates an average value of pixel levels in the upper screen, and a lower screen An RGB level lower screen average calculation unit 653 for calculating an average value of the pixel levels is provided. Further, an RGB level full screen average calculation unit 651 for calculating an average value of pixel levels on the full screen is provided.

  The average values in the upper screen of the R level, G level, and B level calculated in the RGB level upper screen average calculation unit 652 and the lower values of the R level, G level, and B level calculated in the RGB level lower screen average calculation unit 653 The average value on the screen is supplied to the selection circuit 654. In the selection circuit 654, the average value of the larger values is selected from the input average values and is output to the selection circuit 655.

  The selection circuit 655 also receives the average value of the levels on the entire screen calculated by the RGB level full-screen average calculation unit 651. The selection circuit 655 outputs, to the ABL 631, the average value of the larger value among the average value from the RGB level full screen average calculation unit 651 and the average value from the selection circuit 654 as the APL amount. The ABL 631 determines the ABL amount according to the panel luminance (current amount) from the supplied APL amount, and with respect to the signals input in the R correction unit 641, the G correction unit 642, and the B correction unit 643. Apply correction.

  As described above, when a plurality of power supplies are provided, the operation of ABL can be realized without concentrating the load on one power supply by linking the number of power supplies provided and the APL calculation conditions. Is possible.

  In the case of the fourth embodiment, an RGB screen upper screen average calculation unit 652 that provides two power sources, an upper screen power source 611 and a lower screen power source 612, and indirectly measures the load applied to each power source. And an RGB level lower screen average calculation unit 653 is provided.

  With such a configuration, the load of power can be measured for each color combination, so that it is possible to perform more detailed power control. In addition, it is possible to protect the power supply by distributing the power supply, and furthermore, it is possible to measure the load of each power supply and apply an appropriate ABL, so that more appropriate power supply and panel protection can be performed It becomes possible.

[About the fifth embodiment]
FIG. 12 is a diagram for explaining the fifth embodiment. An area having the same size as the display area of the panel 701 is an area 702, an area on the left half of the panel 701 is an area 703, and an area on the right half of the panel 701 is an area 704. Three power supplies are connected to the panel 701, and power is supplied to predetermined pixels from the respective power supplies. The R full screen power supply 711 supplies power to all R pixels in the region 702, and the GB left screen power supply 712 supplies power to all G pixels and B pixels in the region 703. The GB right screen power supply 713 is configured to supply power to all the G pixels and B pixels in the region 704.

  As shown in FIG. 12, a power source is provided independently for each of the R pixel, the G pixel and B pixel located on the left side, and the G pixel and B pixel located on the right side of the panel 701 (three systems). By providing a power supply, it is possible to prevent a load from being concentrated on one power supply, rather than providing a single power supply that collectively supplies power to all of the R pixels, G pixels, and B pixels on one screen. The load can be distributed.

  In the fifth embodiment, as described above, a panel 701 that is composed of a plurality of self-light-emitting devices, displays an image or video, is divided into a plurality of regions, and power is supplied to each self-light-emitting device in each region. There are a plurality of power supplies for supplying. Further, in the fifth embodiment, a power source is provided for each color combination of the panel 701.

  When a plurality of power supplies are provided in this manner, FIG. 13 shows an ABL that is a function for controlling the luminance signal of a video signal and a system for calculating an average image level (APL) for the ABL to control. System. The system shown in FIG. 13 includes an ABL 731 and an APL calculation unit 732. The ABL 731 determines the ABL amount corresponding to the panel luminance (current amount) from the average image level value supplied from the APL calculation unit 732 and applies correction to the input video signal.

  The ABL 731 includes an R correction unit 741, a G correction unit 742, and a B correction unit 743. The R correction unit 741 corrects the R signal in the input signal, the G correction unit 742 corrects the G signal in the input signal, and the B correction unit 743 inputs the input signal. The B signal is corrected.

  The APL calculation unit 732 calculates an average image level. The APL calculation unit 732 includes an RGB level full screen average calculation unit 751, an R level full screen average calculation unit 752, a GB level left screen average calculation unit 753, a GB level right screen average calculation unit 754, a selection circuit 755, and a selection circuit 756. It is set as the structure containing.

  The RGB level full-screen average calculation unit 751 calculates the average value of the levels of all R pixels, G pixels, and B pixels in the region 702. The R level full screen average calculation unit 752 calculates an average value of all the R levels in the region 702. The GB level left screen average calculation unit 753 calculates the average value of the G level and the G level in the region 703. The GB level right screen average calculation unit 754 calculates the average value of the G level and the B level in the area 704.

  As described above, the power supply for all the R pixels in the panel 701, the power supply for the G pixel and the B pixel located on the left side in the panel 701, and the power supply for the G pixel and the B pixel located on the right side in the panel 701 are provided. When a power supply is provided, an R level full screen average calculating unit 752, a GB level left screen average calculating unit 753, and a GB level right screen average calculating unit 754 are provided to calculate an average value of levels in each pixel. In addition, an RGB level full screen average calculation unit 751 that calculates an average value of the levels of the R pixel, the G pixel, and the B pixel is provided.

  The average value of the R level in the entire screen calculated by the R level full screen average calculator 752, the average value of the G level and the B level in the left screen calculated by the GB level left screen average calculator 753, and the GB level right screen The average values of the G level and B level calculated on the average calculation unit 754 in the right screen are supplied to the selection circuit 755. In the selection circuit 755, the average value of the maximum values is selected from the input average values, and the average value is output to the selection circuit 756.

  The selection circuit 756 also receives the average value of the levels in the entire screen calculated by the RGB level full screen average calculation unit 751. The selection circuit 756 outputs the average value of the larger value among the average value from the RGB level full screen average calculation unit 751 and the average value from the selection circuit 755 to the ABL 731 as the APL amount. The ABL 731 determines the ABL amount according to the panel luminance (current amount) from the supplied APL amount, and with respect to the signal input in each part of the R correction unit 741, the G correction unit 742, and the B correction unit 743 Apply correction.

  As described above, when a plurality of power supplies are provided, the operation of ABL can be realized without concentrating the load on one power supply by linking the number of power supplies provided and the APL calculation conditions. Is possible.

  In the case of the fifth embodiment, there are provided three power sources, ie, an R full screen power source 711, a GB left screen power source 712, and a GB right screen power source 713, and the load applied to each of these power sources is indirectly measured. An R level full screen average calculator 752, a GB level left screen average calculator 753, and a GB level right screen average calculator 754 are provided.

  With such a configuration, the load of power can be measured for each color combination and for each region, so that it is possible to perform more detailed power control. In addition, it is possible to protect the power supply by distributing the power supply, and furthermore, it is possible to measure the load of each power supply and apply an appropriate ABL, so that more appropriate power supply and panel protection can be performed It becomes possible.

  As described above, in this embodiment, it is possible to prevent a load from being concentrated on one power source by providing a plurality of power sources that supply power to the pixels (self-luminous devices) constituting the panel. Become. In addition to providing a plurality of power supplies, a plurality of power supplies are provided by providing a function (APL calculation function) that indirectly measures the load related to each power supply and corresponding to each of the plurality of power supplies. It is possible to appropriately perform the ABL operation at that time.

  In the above-described embodiment, the case where two or three power supplies are provided has been described as an example, but it is needless to say that three or more power supplies may be provided. Further, when three or more power supplies are provided, a function for calculating APL corresponding to the number is also provided.

  In the above-described embodiment, the case where the panel is divided in the vertical direction or the case where the panel is divided in the left-right direction has been described as an example. However, the present technology can be applied to other panel divisions. For example, the present technology can also be applied to a case where the upper part, the central part, and the lower part are divided into three parts, or further finely divided. In such a case, a power source is provided in accordance with the division, and a function for calculating APL is also provided.

  In the above-described embodiment, the example of dividing the panel in the vertical direction and the horizontal direction has been described when dividing the panel. However, the panel may be divided for each driver. When the driver is divided for each driver, one power supply may be connected to one driver, but one power supply may be connected to a plurality of drivers. Is possible.

[About recording media]
The series of processes described above can be executed by hardware or can be executed by software. When a series of processing is executed by software, a program constituting the software is installed in the computer. Here, the computer includes, for example, a general-purpose personal computer capable of executing various functions by installing various programs by installing a computer incorporated in dedicated hardware.

  FIG. 14 is a block diagram illustrating an example of a hardware configuration of a computer that executes the above-described series of processes using a program. In a computer, a CPU (Central Processing Unit) 1001, a ROM (Read Only Memory) 1002, and a RAM (Random Access Memory) 1003 are connected to each other by a bus 1004. An input / output interface 1005 is further connected to the bus 1004. An input unit 1006, an output unit 1007, a storage unit 1008, a communication unit 1009, and a drive 1010 are connected to the input / output interface 1005.

  The input unit 1006 includes a keyboard, a mouse, a microphone, and the like. The output unit 1007 includes a display, a speaker, and the like. The storage unit 1008 includes a hard disk, a nonvolatile memory, and the like. The communication unit 1009 includes a network interface. The drive 1010 drives a removable medium 1011 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.

  In the computer configured as described above, the CPU 1001 loads the program stored in the storage unit 1008 into the RAM 1003 via the input / output interface 1005 and the bus 1004 and executes the program, for example. Is performed.

  The program executed by the computer (CPU 1001) can be provided by being recorded on the removable medium 1011 as a package medium, for example. The program can be provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting.

  In the computer, the program can be installed in the storage unit 1008 via the input / output interface 1005 by attaching the removable medium 1011 to the drive 1010. Further, the program can be received by the communication unit 1009 via a wired or wireless transmission medium and installed in the storage unit 1008. In addition, the program can be installed in advance in the ROM 1002 or the storage unit 1008.

  The program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.

  Further, in this specification, the system represents the entire apparatus constituted by a plurality of apparatuses.

  The embodiments of the present technology are not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present technology.

  In addition, this technique can also take the following structures.

(1)
A display unit composed of a plurality of self-luminous devices;
A display apparatus comprising: a plurality of power supply units that supply power for each color of the plurality of self-luminous devices or for each combination of colors.

(2)
The display device according to (1), wherein the display unit is divided into a plurality of regions, and the power supply unit is further provided for each region.

(3)
An APL calculating unit that calculates an APL (Average Picture Level) corresponding to the number of the plurality of power supply units;
The display device according to (1) or (2), further including: an ABL unit that executes an automatic brightness limiter (ABL) according to an APL amount calculated by the APL calculation unit.

(4)
In a display method including a display unit including a plurality of self-luminous devices and a power source that supplies power to the display unit,
A display method comprising the step of controlling the supply of electric power from each power source, wherein the power source is provided for each color or each color combination of the plurality of self-luminous devices.

(5)
In a display unit comprising a display unit composed of a plurality of self-luminous devices, and a power source for supplying power to the display unit,
A computer-readable program for executing processing including a step of controlling the supply of power from each power source, wherein the power source is provided for each color or combination of colors of the plurality of self-luminous devices.

(6)
A display unit composed of a plurality of self-luminous devices;
A display device comprising: a plurality of power supply units that divide the display unit into a plurality of regions and supply power for each region.

(7)
The display device according to (6), further including the power supply unit for each color of the plurality of self-luminous devices or for each combination of colors.

(8)
An APL calculating unit that calculates an APL (Average Picture Level) corresponding to the number of the plurality of power supply units;
The display device according to (7) or (8), further including: an ABL unit that executes an automatic brightness limiter (ABL) according to an APL amount calculated by the APL calculation unit.

(9)
In a display method including a display unit including a plurality of self-luminous devices and a power source that supplies power to the display unit,
A display method comprising: a step of dividing the display unit into a plurality of areas, and the power source is provided for each of the areas and controls the supply of power from each power source.

(10)
In a display unit comprising a display unit composed of a plurality of self-luminous devices, and a power source for supplying power to the display unit,
A computer-readable program for executing processing including the step of the power source dividing the display unit into a plurality of regions and controlling the supply of power from each power source.

  301 panel, 311 R power source, 312 G power source, 331 ABL, 332 APL calculation unit, 341 R correction unit, 342 G correction unit, 343 B correction unit, 351 RGB level full screen average calculation unit, 352 R level full screen Average calculation unit, 353 G level full screen average calculation unit, 354 B level full screen average calculation unit 355 selection circuit, 356 selection circuit, 401 panel, 411 R power supply, 412 GB power supply, 431 ABL, 432 APL calculation unit, 441 R correction unit, 442 G correction unit, 443 B correction unit, 451 RGB level full screen average calculation unit, 452 R level full screen average calculation unit, 453 GB level full screen average calculation unit, 454 selection circuit, 455 selection circuit, 501 panel, 511 power supply for left screen, 12 Power source for right screen, 531 ABL, 532 APL calculation unit, 541 R correction unit, 542 G correction unit, 543 B correction unit, 551 RGB level full screen average calculation unit, 552 RGB level left screen average calculation unit, 553 RGB level Right screen average calculation unit, 554 selection circuit, 555 selection circuit, 601 panel, 611 upper screen power supply, 612 lower screen power supply, 631 ABL, 632 APL calculation unit, 641 R correction unit, 642 G correction unit, 643 B correction , 651 RGB level full screen average calculation unit, 652 RGB level upper screen average calculation unit, 653 RGB level lower screen average calculation unit, 654 selection circuit, 655 selection circuit, 701 panel, 711 R full screen power supply, 712 GB left Screen power supply, 713 GB right screen Power, 731 ABL, 732 APL calculation unit, 741 R correction unit, 742 G correction unit, 743 B correction unit, 751 RGB level full screen average calculation unit, 752 R level full screen average calculation unit, 753 GB level left screen average calculation Part, 754 GB level right screen average calculation part 755 selection circuit, 756 selection circuit

Claims (10)

A display unit composed of a plurality of self-luminous devices;
A display apparatus comprising: a plurality of power supply units that supply power for each color of the plurality of self-luminous devices or for each combination of colors. The display device according to claim 1, wherein the display unit is divided into a plurality of regions, and the power supply unit is further provided for each region. An APL calculating unit that calculates an APL (Average Picture Level) corresponding to the number of the plurality of power supply units;
The display device according to claim 1, further comprising: an ABL unit that executes an automatic brightness limiter (ABL) according to an APL amount calculated by the APL calculation unit. In a display method including a display unit including a plurality of self-luminous devices and a power source that supplies power to the display unit,
A display method comprising the step of controlling the supply of electric power from each power source, wherein the power source is provided for each color or each color combination of the plurality of self-luminous devices. In a display unit comprising a display unit composed of a plurality of self-luminous devices, and a power source for supplying power to the display unit,
A computer-readable program for executing processing including a step of controlling the supply of power from each power source, wherein the power source is provided for each color or combination of colors of the plurality of self-luminous devices. A display unit composed of a plurality of self-luminous devices;
A display device comprising: a plurality of power supply units that divide the display unit into a plurality of regions and supply power for each region. The display apparatus according to claim 6, further comprising the power supply unit for each color of the plurality of self-luminous devices or for each combination of colors. An APL calculating unit that calculates an APL (Average Picture Level) corresponding to the number of the plurality of power supply units;
The display device according to claim 6, further comprising: an ABL unit that executes an automatic brightness limiter (ABL) according to an APL amount calculated by the APL calculation unit. In a display method including a display unit including a plurality of self-luminous devices and a power source that supplies power to the display unit,
A display method comprising: a step of dividing the display unit into a plurality of areas, and the power source is provided for each of the areas and controls the supply of power from each power source. In a display unit comprising a display unit composed of a plurality of self-luminous devices, and a power source for supplying power to the display unit,
A computer-readable program for executing processing including the step of the power source dividing the display unit into a plurality of regions and controlling the supply of power from each power source.

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