CN102194411B - Picture adjusting method, device and system - Google Patents
Picture adjusting method, device and system Download PDFInfo
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- CN102194411B CN102194411B CN 201010121828 CN201010121828A CN102194411B CN 102194411 B CN102194411 B CN 102194411B CN 201010121828 CN201010121828 CN 201010121828 CN 201010121828 A CN201010121828 A CN 201010121828A CN 102194411 B CN102194411 B CN 102194411B
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Abstract
The invention discloses a picture adjusting method, device and system. The method comprises the following steps: determining appointed LEDs (Light-Emitting Diodes) in a backlight source and the appointed turn-on degree of the appointed LEDs according to received original image data of a current frame, wherein the appointed LEDs comprise LEDs to be turned on in the backlight source; inquiring brightness data of the backlight source when the appointed LEDs are at the appointed turn-on degree and electric signals corresponding to the brightness data of the backlight source when the appointed LEDs are at the appointed turn-on degree from a preset brightness table; and generating output image data of the current frame according to the brightness data of the backlight source when the appointed LEDs are at the appointed turn-on degree and the original image data of the current frame. According to the technical scheme provided by the embodiment, the adjustment of a displayed picture can be realized by simply turning on the appointed LEDs in the backlight source at the appointed turn-on degree without turning on all the LEDs in the backlight source, thereby reducing the power consumption of the backlight source and achieving the purpose of energy saving.
Description
Technical field
The embodiment of the invention relates to liquid crystal display and makes field, particularly a kind of picture adjusting method, device and system.
Background technology
Light emitting diode (Light Emitting Diode, hereinafter to be referred as: LED) backlight is more and more extensive in the application in liquid crystal display manufacturing field.Wherein, the LED-backlit source is comprised of LED.In the process that display frame is adjusted, normally LED is carried out brightness adjustment and view data is adjusted, to reach the purpose of adjusting the display frame effect.
In the prior art, for reaching the purpose of adjusting the display frame effect, normally on the whole all LED are carried out the brightness adjustment of same ratio and view data is carried out the adjustment of same adjustment amount, namely the overall dynamics adjustment is carried out in display frame.
Although adopt the method for overall dynamics adjustment can reach the purpose of adjusting the display frame effect, because this kind of employing method need to be opened all LED on the backlight, therefore cause the power consumption of backlight larger.
Summary of the invention
The invention provides a kind of picture adjusting method, device and system, in order to solving defective of the prior art, thereby reduce the power consumption of backlight.
The embodiment of the invention provides a kind of picture adjusting method, comprising:
Determine appointment LED in the backlight and the appointment opening degree of described appointment LED according to the current frame original image data that receive, described appointment LED comprises the LED that the need in the backlight are opened;
The electric signal corresponding to brightness data of backlight when the electric signal corresponding to brightness data of backlight when the brightness data of backlight and described appointment LED are in described appointment opening degree when inquiring described appointment LED being in described appointment opening degree from the illuminometer that sets in advance, described illuminometer comprise described appointment LED, the brightness data of backlight and described appointment LED were in different opening degrees when described appointment LED was in different opening degrees;
Brightness data and the described current frame original image data of backlight generate the present frame output image data when being in the appointment opening degree according to described appointment LED.
The embodiment of the invention provides a kind of picture regulator, comprising:
Module is set, be used for arranging illuminometer, the electric signal corresponding to brightness data of backlight when described illuminometer comprises described appointment LED, the brightness data of backlight and described appointment LED were in different opening degrees when described appointment LED was in different opening degrees;
Determination module is used for determining the appointment LED of backlight and the appointment opening degree of described appointment LED according to the current frame original image data that receive, and described appointment LED comprises the LED that the need in the backlight are opened;
Enquiry module, the electric signal corresponding to brightness data of backlight when being used for the brightness data of backlight when inquiring described appointment LED and be in described appointment opening degree from described illuminometer and described appointment LED and being in described appointment opening degree;
Generation module is used for being in according to described appointment LED brightness data and the described current frame original image data of backlight when specifying opening degree, generates the present frame output image data.
The embodiment of the invention provides a kind of image regulating system, comprising:
Picture regulator is used for determining the appointment LED of backlight and the appointment opening degree of described appointment LED according to the current frame original image data that receive, and described appointment LED comprises the LED that the need in the backlight are opened; The electric signal corresponding to brightness data of backlight when the electric signal corresponding to brightness data of backlight when the brightness data of backlight and described appointment LED are in described appointment opening degree when inquiring described appointment LED being in described appointment opening degree from the illuminometer that sets in advance, described illuminometer comprise described appointment LED, the brightness data of backlight and described appointment LED were in different opening degrees when described appointment LED was in different opening degrees; Brightness data and the described current frame original image data of backlight generate the present frame output image data when being in the appointment opening degree according to described appointment LED; The electric signal corresponding to brightness data of backlight exported to backlight source driving circuit when described appointment LED was in described appointment opening degree, and described present frame output image data is exported to the liquid crystal display circuit;
Described backlight source driving circuit, the electric signal corresponding to brightness data of backlight when being used for receiving described appointment LED and being in described appointment opening degree, and the electric signal corresponding to brightness data of backlight drives backlight when specifying LED to be in described appointment opening degree;
Described liquid crystal display circuit is used for receiving described present frame output image data, and according to the display frame on liquid crystal display of described present frame output image data.
In the technical scheme of present embodiment, determine appointment LED in the backlight and the appointment opening degree of this appointment LED according to the current frame original image data that receive, this appointment LED is the LED that needs unlatching in the backlight, from the illuminometer that sets in advance, inquire this appointment LED and be in the brightness data of backlight when specifying opening degree and electric signal corresponding to brightness data that this appointment LED is in backlight when specifying opening degree, brightness data and the current frame original image data of backlight when being in the appointment opening degree according to appointment LED, generate the present frame output image data, by only realizing adjustment to display frame to specify opening degree to open appointment LED in the backlight, need not to open all LED in the backlight, thereby reduced the power consumption of backlight, reached energy-conservation purpose.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do one to the accompanying drawing of required use in embodiment or the description of the Prior Art and introduce simply, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The process flow diagram of a kind of picture adjusting method that Fig. 1 a provides for the embodiment of the invention one;
Fig. 1 b is the synoptic diagram of current frame original image in the embodiment of the invention;
The process flow diagram of a kind of picture adjusting method that Fig. 2 provides for the embodiment of the invention two;
Fig. 3 a is a kind of synoptic diagram of specifying the control area of LED on the backlight of the present invention;
Fig. 3 b is the another kind of synoptic diagram of specifying the control area of LED on the backlight of the present invention;
The structural representation of a kind of picture regulator that Fig. 4 provides for the embodiment of the invention four;
The structural representation of a kind of image regulating system that Fig. 5 provides for the embodiment of the invention five;
The structural representation of a kind of image regulating system that Fig. 6 provides for the embodiment of the invention six;
The structural representation of a kind of image regulating system that Fig. 7 provides for the embodiment of the invention seven.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The process flow diagram of a kind of picture adjusting method that Fig. 1 a provides for the embodiment of the invention one, as shown in Figure 1a, the method comprises:
Backlight in the present embodiment can be side light type LED backlight source, and this side light type LED backlight source can comprise at least one LED lamp bar, comprises a plurality of LED in this LED lamp bar.Particularly, LED lamp bar can be a side, two sides, three sides or four sides that are positioned at backlight.
In the present embodiment, because the pixel gray level value of the different pixels point in the frame raw image data is different, the larger pixel of pixel gray level value is corresponding to the larger brightness data of brightness value, the less pixel of pixel gray level value is corresponding to the less brightness data of brightness value, therefore can determine according to the current frame original image data opening degree of the LED that LED that needs open and this need open in the present embodiment, i.e. appointment LED in the backlight and the opening degree that is somebody's turn to do appointment LED.Particularly, specify LED can be one or more, when to specify LED be a plurality of, specify LED can be positioned at a side or many sides of backlight.
This step specifically can comprise:
Step 1011, the current frame original image data are carried out image process, determine the neighbor pixel set of current frame original image data, this neighbor pixel set comprises the set of a plurality of adjacent pixels with specified pixel GTG value in the current frame original image data.
Wherein, specified pixel GTG value can be the pixel gray level value more than or equal to present frame GTG threshold value, this present frame GTG threshold value can be for calculating when image is processed in that the current frame original image data are carried out, so present frame GTG threshold value corresponding to each frame current frame original image data all is different.
Take Fig. 1 b as example, Fig. 1 b is the synoptic diagram of current frame original image in the embodiment of the invention, and the neighbor pixel set of determining can be as shown in Fig. 1 b.
Step 1012, inquire LED corresponding to pixel with specified pixel GTG value from the mapping table of position, this position mapping table comprises the LED that pixel is corresponding with this pixel, and this has LED corresponding to the pixel of specified pixel GTG value for specifying LED.
Because specified pixel GTG value is in the pixel gray level value greater than the pixel gray level value of present frame GTG threshold value, this specified pixel GTG value is larger GTG value, so the pixel of this specified pixel GTG value is corresponding to the larger brightness data of brightness value.In the present embodiment, for reaching the required brightness data of pixel of specified pixel GTG value, need to open LED corresponding to pixel with specified pixel GTG value.
Shown in Fig. 1 b, LED corresponding to the pixel with specified pixel GTG value that inquires is LED21.
Step 1013, the specified pixel GTG value of the pixel in the neighbor pixel set is carried out computing, generate the GTG value of neighbor pixel set;
For example: can calculate the average of the specified pixel GTG value of the pixel in the neighbor pixel set, then the GTG value of neighbor pixel set is the average of this specified pixel GTG value.
Step 1014, the GTG value of calculating the neighbor pixel set and the ratio of maximum gray value, and the ratio of the GTG value of this neighbor pixel set and maximum gray value is set to the appointment opening degree of this appointment LED;
In the present embodiment, because different GTG values is corresponding to different brightness datas.Brightness data corresponding to larger this GTG value of GTG value is larger.Therefore can be with the ratio of the GTG value of neighbor pixel set and maximum gray value as this appointment opening degree of specifying LED, namely specify the GTG value of opening degree=neighbor pixel set/maximum gray value.Wherein, the maximum gray value is 255.
For example: when the ratio of the GTG value of the neighbor pixel that calculates set and maximum gray value was 80%, specifying opening degree also was 80%, and this shows specifies each LED that comprises among the LED all to open 80% brightness.
The electric signal corresponding to brightness data of backlight when step 102, the electric signal corresponding to brightness data of backlight when inquiring this appointment LED being in the brightness data of backlight when specifying opening degree and this appointments LED and being in the appointment opening degree from the illuminometer that sets in advance, this illuminometer comprise appointment LED, the brightness data of backlight and this appointment LED were in different opening degrees when this appointment LED was in different opening degrees;
In the present embodiment, specify LED can be one or more, the brightness data of backlight when then can be in advance testing out one or more and specify LED to be in different opening degrees by optical test equipment, and illuminometer is set, comprise the electric signal corresponding to brightness data of backlight when the brightness data of backlight when specifying LED to be in different opening degrees from this appointment LED and this appointment LED are in different opening degrees in the illuminometer of this setting.For example: opening degree can be for 10%, 20% ... 90% or 100%.
This step specifically comprises: inquire the brightness data that this appointment LED is in backlight when specifying opening degree from illuminometer, and inquire electric signal corresponding to brightness data that this appointment LED is in backlight when specifying opening degree from illuminometer.
In the present embodiment, electric signal corresponding to brightness data that this appointment LED is in backlight when specifying opening degree is used for backlight is driven.Particularly, the electric signal corresponding to brightness data that this appointment LED that inquires can be in backlight when specifying opening degree sends to backlight source driving circuit, and the electric signal corresponding to brightness data of backlight drives backlight when being in the appointment opening degree by backlight source driving circuit according to this appointment LED.After backlight driven, make and specify LED to specify opening degree to open.
Step 103, when specifying LED to be in to specify opening degree brightness data and the current frame original image data of backlight, generate the present frame output image data;
In the present embodiment, brightness data and the current frame original image data of backlight are carried out computing in the time of can being in the appointment opening degree to appointment LED, generate the present frame output image data.Particularly, can be to the pixel gray level value of the pixel in the current frame original image data and when specifying LED be in to specify opening degree in the brightness data of backlight brightness value corresponding to this pixel carry out computing, generate the present frame output image data.The pixel gray level value of each pixel in the above-mentioned calculation processes adjustable height current frame original image data, thus reach the effect that the present frame output image data is strengthened.For example: can adopt Gauss algorithm to the pixel gray level value of the pixel in the current frame original image data and specify LED to be in that brightness value corresponding to this pixel carries out computing in the brightness data of backlight when specifying opening degree.
In the present embodiment, the present frame output image data is used on the liquid crystal display and shows.For example: this present frame output image data can be sent to the liquid crystal display circuit, convert the present frame output image data electric signal corresponding to present frame output image data to by the liquid crystal display circuit, and electric signal on liquid crystal display the display frame corresponding according to the present frame output image data.
In the present embodiment, the electric signal that the brightness data of backlight is corresponding when being in the appointment opening degree by this appointment LED and the present frame output image data of generation have been realized the adjustment to display frame.
In the technical scheme of present embodiment, determine appointment LED in the backlight and the appointment opening degree of this appointment LED according to the current frame original image data that receive, this appointment LED is the LED that needs unlatching in the backlight, from the illuminometer that sets in advance, inquire this appointment LED and be in the brightness data of backlight when specifying opening degree and electric signal corresponding to brightness data that this appointment LED is in backlight when specifying opening degree, brightness data and the current frame original image data of backlight when being in the appointment opening degree according to appointment LED, generate the present frame output image data, by only realizing adjustment to display frame to specify opening degree to open appointment LED in the backlight, need not to open all LED in the backlight, thereby reduced the power consumption of backlight, reached energy-conservation purpose.
The process flow diagram of a kind of picture adjusting method that Fig. 2 provides for the embodiment of the invention two, as shown in Figure 2, the method comprises:
In the present embodiment, can at first determine the control area and the territory, noncontrolled area that is in the appointment LED of this opening degree of the appointment LED that is in arbitrary opening degree.Specifically comprise: the brightness data of measuring backlight when specifying LED to be in arbitrary opening degree; The brightness data of backlight generates the brightness cut off value when being in this opening degree according to appointment LED; Mark off the control area and the territory, noncontrolled area that is in the appointment LED of this opening degree of the appointment LED that is in this opening degree at backlight according to this brightness cut off value.Wherein, the territory, noncontrolled area that is in the appointment LED of this opening degree is the zone that is on the backlight outside the control area of appointment LED of this opening degree.
Particularly, shown in Fig. 3 a, Fig. 3 a is a kind of synoptic diagram of specifying the control area of LED on the backlight of the present invention.Take Fig. 3 a as example, the process of the control area of determining the appointment LED that is in arbitrary opening degree is elaborated.Be provided with the situation of LED lamp bar 200 among Fig. 3 a for a side of backlight 1, when the appointment LED 21 on being positioned at LED lamp bar 200 opens, measure the brightness data of backlight when specifying LED 21 to be in arbitrary opening degree by optical test equipment, each pixel that the brightness data of backlight can comprise liquid crystal display when specifying LED 21 to be in arbitrary opening degree corresponding brightness value on backlight.
The brightness data of backlight generates the brightness cut off value when being in arbitrary opening degree according to appointment LED.Particularly, calculate the mean value of brightness value corresponding to each pixel of brightness data of this backlight when specifying LED to be in arbitrary opening degree, with the brightness value B of this mean value as backlight; Calculate brightness value M through the light of liquid crystal display according to formula M=B*T, wherein, T is the transmitance of liquid crystal display since the light that sends of backlight only some can see through liquid crystal display, so can calculate brightness value M through the light of liquid crystal display by formula M=B*T.Calculate brightness cut off value I according to formula I=M*Rc/T again, wherein, Rc is screen brightness rate of change, because the brightness value in light transmission liquid crystal display time can change, and the intensity of variation for the brightness value of different liquid crystal display light is different, therefore need to calculate brightness changing value through the light of liquid crystal display according to formula I=M*Rc/T, and the brightness changing value of light that will see through liquid crystal display is as brightness cut off value I.For example: when M=200nits, Rc=5% and T=4%, calculate brightness cut off value I=250nits according to formula I=M*Rc/T.
Mark off the control area and the territory, noncontrolled area that is in the appointment LED of this opening degree of the appointment LED that is in this opening degree at backlight according to this brightness cut off value.Particularly, can be with the control area as the appointment LED that is in this arbitrary opening degree, the zone that forms more than or equal to pixel corresponding to the brightness value of brightness cut off value in the brightness data of backlight, with the territory, noncontrolled area as appointment LED, the zone that forms less than pixel corresponding to the brightness value of brightness cut off value in the brightness data of backlight.Particularly can be referring to the control area of the appointment LED 21 shown in Fig. 3 a and the territory, noncontrolled area of specifying LED 21.
Behind the territory, noncontrolled area of the control area of determining the appointment LED that is in arbitrary opening degree and the appointment LED that is in this opening degree, to be in the brightness data of control area of appointment LED of arbitrary opening degree and the brightness data in territory, noncontrolled area that is in the appointment LED of this opening degree and write illuminometer, and the electric signal corresponding to brightness data of backlight writes illuminometer will specify LED to be in arbitrary opening degree the time.In the present embodiment, the brightness data of control area that is in the appointment LED of arbitrary opening degree can be the corresponding brightness value on this control area of each pixel on liquid crystal display corresponding to this control area, and the brightness data in territory, noncontrolled area that is in the appointment LED of arbitrary opening degree can be the mean value of the corresponding brightness value on this territory, noncontrolled area of each pixel on liquid crystal display corresponding to this territory, noncontrolled area.That is to say that the brightness value that is in the each point in the territory, noncontrolled area of appointment LED of arbitrary opening degree can be identical, does not consider that brightness changes.
Above-mentioned Fig. 3 a shows and comprises a situation of specifying LED on the backlight, specifies the quantity of LED all right a plurality of in the present embodiment.Fig. 3 b is the another kind of synoptic diagram of specifying the control area of LED on the backlight of the present invention, shown in Fig. 3 b, be provided with the situation of LED lamp bar 200 among Fig. 3 b for a side of backlight 1, when the appointment LED 22 on being positioned at LED lamp bar 200 and appointment LED 23 open simultaneously, the brightness data of backlight in the time of can measuring appointment LED 22 and specify LED 23 to be in arbitrary opening degree by optical test equipment, the brightness data of backlight comprises the brightness value of each pixel correspondence on backlight of liquid crystal display when specifying LED 22 and appointment LED 23 to be in arbitrary opening degree.
Specify the brightness cut off value of LED 22 and be in this opening degree and specify the brightness cut off value of LED 23 to generate the appointment LED 22 that is in arbitrary opening degree and brightness cut off value when specifying LED 23 to open according to being in arbitrary opening degree again.For example, the brightness cut off value that is in the appointment LED 22 of arbitrary opening degree can be drawn the appointment LED 22 that is in this opening degree and the brightness cut off value of specifying LED 23 with the brightness cut off value addition that is in the appointment LED 23 of this opening degree.
Mark off the control area and the territory, noncontrolled area that is in the appointment LED of this opening degree of the appointment LED that is in arbitrary opening degree at backlight according to this brightness cut off value.Particularly, can be with the control area as the appointment LED that is in arbitrary opening degree, the zone that forms more than or equal to pixel corresponding to the brightness value of brightness cut off value in the brightness data of backlight, with in the brightness data of backlight less than the territory, noncontrolled area as the appointment LED that is in this opening degree, the zone of pixel composition corresponding to the brightness value of brightness cut off value.Can and specify the control area of LED 23 and be in the appointment LED 22 of this opening degree and the territory, noncontrolled area of specifying LED 23 referring to the appointment LED that is in arbitrary opening degree 22 shown in Fig. 3 b particularly.In the control area of determining the appointment LED that is in arbitrary opening degree with after specifying the territory, noncontrolled area of LED, to be in the brightness data of control area of appointment LED of arbitrary opening degree and the brightness data in territory, noncontrolled area that is in the appointment LED of this opening degree and write illuminometer, and the electric signal corresponding to brightness data of backlight writes illuminometer will specify LED to be in arbitrary opening degree the time.
For example, for the situation shown in Fig. 3 a, the appointment LED that determines is for specifying LED 21; For the situation shown in Fig. 3 b, the appointment LED that determines is for specifying LED 22 and specifying LED 23.
Step 206, according to this be in the control area of the appointment LED that specifies opening degree brightness data, this is in brightness data and the current frame original image data in the territory, noncontrolled area of the appointment LED that specifies opening degree, generates the present frame output image data;
Particularly, can be to carrying out computing corresponding to brightness value corresponding to this pixel in the brightness data of the control area of the pixel value of the pixel of the control area of specifying LED and this appointment LED in the current frame original image data, and can be to carrying out computing, generation present frame output image data corresponding to brightness value corresponding to this pixel in the brightness data in the territory, noncontrolled area of the pixel value of the pixel in the territory, noncontrolled area of specifying LED and this appointments LED in the current frame original image data.
The execution sequence of each step only is a kind of example in the present embodiment, can change in actual applications, and for example: step 205 can be positioned at after the step 206.
In the technical scheme of present embodiment, determine appointment LED in the backlight and the appointment opening degree of this appointment LED according to the current frame original image data that receive, this appointment LED is the LED that needs unlatching in the backlight, from the illuminometer that sets in advance, inquire this appointment LED and be in the brightness data of backlight when specifying opening degree and electric signal corresponding to brightness data that this appointment LED is in backlight when specifying opening degree, brightness data and the current frame original image data of backlight when being in the appointment opening degree according to appointment LED, generate the present frame output image data, by only realizing adjustment to display frame to specify opening degree to open appointment LED in the backlight, need not to open all LED in the backlight, thereby reduced the power consumption of backlight, reached energy-conservation purpose.By backlight being divided into control area and the territory, noncontrolled area of specifying LED, and respectively raw image data corresponding to control area and territory, noncontrolled area processed, thereby further improved energy-conservation effect.Adopt the brightness data of specifying LED to be in backlight when specifying opening degree that the current frame original image data are processed and generate the present frame output image data, but the contrast of Effective Raise display frame.
Specify on Fig. 3 a in the embodiment of the invention two and the backlight shown in Fig. 3 b and all indicated the situation that LED lamp bar is positioned at backlight one side in the control area synoptic diagram of LED, LED lamp bar can also be positioned at two sides, three sides or four sides of backlight in actual applications, the position of LED lamp bar can arrange according to actual needs, the appointment LED that determines can be positioned on a LED lamp bar or a plurality of LED lamp bar, specifically enumerates no longer one by one.
The structural representation of a kind of picture regulator that Fig. 4 provides for the embodiment of the invention four, as shown in Figure 4, this device comprises: module 111, determination module 112, enquiry module 113 and generation module 114 are set.
The electric signal corresponding to brightness data of backlight when the brightness data of backlight and described appointment LED were in described appointment opening degree when enquiry module 113 was used for inquiring described appointment LED and being in described appointment opening degree from described illuminometer;
Further, in the present embodiment, module 111 is set can also be used for described position mapping table is set, described position mapping table comprises the LED that pixel is corresponding with described pixel.
Processing submodule is used for described current frame original image data are carried out the image processing, determine the neighbor pixel set of described current frame original image data, described neighbor pixel set comprises the set of a plurality of adjacent pixels with specified pixel GTG value in the current frame original image data; The inquiry submodule is used for inquiring LED corresponding to pixel with specified pixel GTG value from the position mapping table, and described LED corresponding to pixel with specified pixel GTG value is appointment LED; Calculating sub module is used for the specified pixel GTG value of the pixel of neighbor pixel set is carried out the GTG value that computing generates the neighbor pixel set, and calculates the GTG value of neighbor pixel set and the ratio of maximum gray value; Submodule is set is set to described appointment opening degree for the GTG value of described neighbor pixel set and the ratio of maximum gray value.
Further, when picture regulator 11 adopts FPGA or CPLD to realize, can with picture regulator 11 and machine core board jointly is integrated in FPGA or CPLD realizes.
The picture regulator of present embodiment can be determined appointment LED in the backlight and the appointment opening degree of this appointment LED according to the current frame original image data that receive, this appointment LED is the LED that needs unlatching in the backlight, from the illuminometer that sets in advance, inquire this appointment LED and be in the brightness data of backlight when specifying opening degree and electric signal corresponding to brightness data that this appointment LED is in backlight when specifying opening degree, brightness data and the current frame original image data of backlight when being in the appointment opening degree according to appointment LED, generate the present frame output image data, by only realizing adjustment to display frame to specify opening degree to open appointment LED in the backlight, need not to open all LED in the backlight, thereby reduced the power consumption of backlight, reached energy-conservation purpose.
The structural representation of a kind of image regulating system that Fig. 5 provides for the embodiment of the invention five, as shown in Figure 5, this system comprises: picture regulator 11, backlight source driving circuit 2 and liquid crystal display circuit 3.
The electric signal corresponding to brightness data of backlight when backlight source driving circuit 2 is used for receiving described appointment LED and is in described appointment opening degree, and the electric signal corresponding to brightness data of backlight drives backlight when specifying LED to be in described appointment opening degree;
Liquid crystal display circuit 3 is used for receiving described present frame output image data, convert the present frame output image data electric signal corresponding to this present frame output image data to, and electric signal on liquid crystal display the display frame corresponding according to described present frame output image data.
In the present embodiment, picture regulator 11 can arrange separately, and this moment, picture regulator 11 can be connected with machine core board, and the current frame original image data that picture regulator 11 receives are sent by machine core board.
The structural representation of a kind of image regulating system that Fig. 6 provides for the embodiment of the invention six, as shown in Figure 6, the difference of present embodiment and above-described embodiment five is: picture regulator 11 is arranged on the machine core board 100.
The structural representation of a kind of image regulating system that Fig. 7 provides for the embodiment of the invention seven, as shown in Figure 7, the difference of present embodiment and above-described embodiment five is: picture regulator 11 is arranged in the liquid crystal display circuit 3, and the current frame original image data that this moment, picture regulator 11 received can be sent by machine core board 100.
In the image regulating system of the embodiment of the invention, can determine appointment LED in the backlight and the appointment opening degree of this appointment LED according to the current frame original image data that receive by picture regulator, this appointment LED is the LED that needs unlatching in the backlight, from the illuminometer that sets in advance, inquire this appointment LED and be in the brightness data of backlight when specifying opening degree and electric signal corresponding to brightness data that this appointment LED is in backlight when specifying opening degree, brightness data and the current frame original image data of backlight when being in the appointment opening degree according to appointment LED, generate the present frame output image data, and be in according to this appointment LED by backlight source driving circuit that the electric signal corresponding to brightness data of backlight drives backlight when specifying opening degree, by electric signal on liquid crystal display the display frame corresponding according to the present frame output image data of liquid crystal display circuit.Present embodiment, need not to open all LED in the backlight, thereby has reduced the power consumption of backlight with the adjustment of the appointment LED realization in the appointment opening degree unlatching backlight to display frame by only, has reached energy-conservation purpose.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. a picture adjusting method is characterized in that, comprising:
Determine appointment LED in the backlight and the appointment opening degree of described appointment LED according to the current frame original image data that receive, described appointment LED comprises the LED that the need in the backlight are opened;
The electric signal corresponding to brightness data of backlight when the electric signal corresponding to brightness data of backlight when the brightness data of backlight and described appointment LED are in described appointment opening degree when inquiring described appointment LED being in described appointment opening degree from the illuminometer that sets in advance, described illuminometer comprise described appointment LED, the brightness data of backlight and described appointment LED were in different opening degrees when described appointment LED was in different opening degrees;
Brightness data and the described current frame original image data of backlight generate the present frame output image data when being in the appointment opening degree according to described appointment LED;
Wherein, the current frame original image data that receive of described basis are determined appointment LED in the backlight and the appointment opening degree of described appointment LED comprises:
Described current frame original image data are carried out image to be processed, determine the neighbor pixel set of described current frame original image data, described neighbor pixel set comprises the set of a plurality of adjacent pixels with specified pixel GTG value in the current frame original image data;
Inquire LED corresponding to pixel with specified pixel GTG value from the mapping table of position, described position mapping table comprises the LED that pixel is corresponding with described pixel, and described LED corresponding to pixel with specified pixel GTG value is appointment LED;
Specified pixel GTG value to the pixel in the neighbor pixel set is carried out computing, generates the GTG value of neighbor pixel set;
Calculate the GTG value of neighbor pixel set and the ratio of maximum gray value, and the GTG value of described neighbor pixel set and the ratio of maximum gray value are set to described appointment opening degree.
2. method according to claim 1, it is characterized in that the brightness data of backlight comprised when described appointment LED was in different opening degrees: be in arbitrary opening degree appointment LED the control area brightness data and be in the brightness data in territory, noncontrolled area of the appointment LED of described opening degree.
3. method according to claim 2 is characterized in that, also comprises: described illuminometer is set;
Describedly described illuminometer be set comprise:
Determine the described control area and the territory, noncontrolled area that is in the appointment LED of described opening degree that is in the appointment LED of arbitrary opening degree;
To be in the brightness data of control area of appointment LED of arbitrary opening degree and the brightness data in territory, noncontrolled area that is in the appointment LED of described opening degree and write described illuminometer;
The electric signal corresponding to brightness data of backlight write described illuminometer when appointment LED was in arbitrary opening degree.
4. method according to claim 3 is characterized in that, the described territory, noncontrolled area of determining the control area of the described appointment LED that is in arbitrary opening degree and being in the appointment LED of described opening degree comprises:
Measure the brightness data of backlight when specifying LED to be in arbitrary opening;
The brightness data of backlight generates the brightness cut off value when being in arbitrary opening degree according to described appointment LED;
Mark off the control area and the territory, noncontrolled area that is in the appointment LED of described opening degree of the appointment LED that is in described opening degree at backlight according to described brightness cut off value.
5. method according to claim 4 is characterized in that, the described control area that marks off the appointment LED that is in described opening degree according to described brightness cut off value at backlight comprises with the territory, noncontrolled area that is in the appointment LED of described opening degree:
With the control area as the appointment LED that is in arbitrary opening degree, the zone that forms more than or equal to pixel corresponding to the brightness value of described brightness cut off value in the brightness data of backlight, and with in the brightness data of backlight less than the territory, noncontrolled area as the appointment LED that is in described opening degree, the zone of pixel composition corresponding to the brightness value of described brightness cut off value.
6. according to claim 2 to 4 arbitrary described methods, it is characterized in that, described when the brightness data of backlight and described appointment LED are in described appointment opening degree when inquiring described appointment LED being in described appointment opening degree from the illuminometer that sets in advance the electric signal corresponding to brightness data of backlight comprise:
From described illuminometer, inquire the brightness data of the control area that is in this appointments LED that specifies opening degree and be in the brightness data in territory, noncontrolled area of this appointment LED of appointment opening degree, and the electric signal corresponding to brightness data of backlight when from described illuminometer, inquiring this appointment LED and being in this appointment opening degree.
7. method according to claim 6 is characterized in that, brightness data and the described current frame original image data of backlight when being in the appointment opening degree according to described appointment LED generate the present frame output image data and comprise:
According to the described brightness data of the control area of the appointment LED that specifies opening degree, described brightness data and the described current frame original image data that are in the territory, noncontrolled area of the appointment LED that specifies opening degree of being in, generate described present frame output image data.
8. a picture regulator is characterized in that, comprising:
Module is set, is used for arranging illuminometer, described illuminometer comprise specify LED, the electric signal corresponding to brightness data of backlight when the brightness data of backlight and described appointment LED were in different opening degrees when described appointment LED was in different opening degrees;
Determination module is used for determining the appointment LED of backlight and the appointment opening degree of described appointment LED according to the current frame original image data that receive, and described appointment LED comprises the LED that the need in the backlight are opened;
Enquiry module, the electric signal corresponding to brightness data of backlight when being used for the brightness data of backlight when inquiring described appointment LED and be in described appointment opening degree from described illuminometer and described appointment LED and being in described appointment opening degree;
Generation module is used for being in according to described appointment LED brightness data and the described current frame original image data of backlight when specifying opening degree, generates the present frame output image data;
The described module that arranges also is used for the setting position mapping table, and described position mapping table comprises the LED that pixel is corresponding with described pixel;
Described determination module comprises:
Process submodule, being used for that described current frame original image data are carried out image processes, determine the neighbor pixel set of described current frame original image data, described neighbor pixel set comprises the set of a plurality of adjacent pixels with specified pixel GTG value in the current frame original image data;
The inquiry submodule is used for inquiring LED corresponding to pixel with specified pixel GTG value from the position mapping table, and described LED corresponding to pixel with specified pixel GTG value is appointment LED;
Calculating sub module is used for the specified pixel GTG value of the pixel of neighbor pixel set is carried out the GTG value that computing generates the neighbor pixel set, and calculates the GTG value of neighbor pixel set and the ratio of maximum gray value;
Submodule is set, is used for the GTG value of described neighbor pixel set and the ratio of maximum gray value and is set to described appointment opening degree.
9. an image regulating system is characterized in that, comprising:
Picture regulator is used for determining the appointment LED of backlight and the appointment opening degree of described appointment LED according to the current frame original image data that receive, and described appointment LED comprises the LED that the need in the backlight are opened; The electric signal corresponding to brightness data of backlight when the electric signal corresponding to brightness data of backlight when the brightness data of backlight and described appointment LED are in described appointment opening degree when inquiring described appointment LED being in described appointment opening degree from the illuminometer that sets in advance, described illuminometer comprise described appointment LED, the brightness data of backlight and described appointment LED were in different opening degrees when described appointment LED was in different opening degrees; Brightness data and the described current frame original image data of backlight generate the present frame output image data when being in the appointment opening degree according to described appointment LED; The electric signal corresponding to brightness data of backlight exported to backlight source driving circuit when described appointment LED was in described appointment opening degree, and described present frame output image data is exported to the liquid crystal display circuit;
Described backlight source driving circuit, the electric signal corresponding to brightness data of backlight when being used for receiving described appointment LED and being in described appointment opening degree, and the electric signal corresponding to brightness data of backlight drives backlight when specifying LED to be in described appointment opening degree;
Described liquid crystal display circuit, be used for receiving described present frame output image data, convert this present frame output image data electric signal corresponding to present frame output image data to, and electric signal on liquid crystal display the display frame corresponding according to described present frame output image data;
Described picture regulator is used for that specifically described current frame original image data are carried out image to be processed, determine the neighbor pixel set of described current frame original image data, described neighbor pixel set comprises the set of a plurality of adjacent pixels with specified pixel GTG value in the current frame original image data;
Inquire LED corresponding to pixel with specified pixel GTG value from the mapping table of position, described position mapping table comprises the LED that pixel is corresponding with described pixel, and described LED corresponding to pixel with specified pixel GTG value is appointment LED;
Specified pixel GTG value to the pixel in the neighbor pixel set is carried out computing, generates the GTG value of neighbor pixel set;
Calculate the GTG value of neighbor pixel set and the ratio of maximum gray value, and the GTG value of described neighbor pixel set and the ratio of maximum gray value are set to described appointment opening degree.
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| CN103137074A (en) * | 2011-11-30 | 2013-06-05 | 天津三星电子有限公司 | Energy-saving method and device for displayer and displayer |
| CN104700788B (en) * | 2015-04-01 | 2017-12-08 | 京东方科技集团股份有限公司 | The drive device and display panel of a kind of display panel |
| CN105374340B (en) * | 2015-11-24 | 2018-01-09 | 青岛海信电器股份有限公司 | A kind of brightness correcting method, device and display device |
| CN105788539B (en) | 2016-05-20 | 2018-07-10 | 京东方科技集团股份有限公司 | Backlight adjusting method and system, backlight module and display device |
| WO2022134008A1 (en) * | 2020-12-25 | 2022-06-30 | 京东方科技集团股份有限公司 | Image display method, apparatus, electronic device and storage medium |
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| CN101382680A (en) * | 2007-09-07 | 2009-03-11 | 奇美电子股份有限公司 | Control method of backlight source and displaying framework thereof |
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| JP2007148059A (en) * | 2005-11-29 | 2007-06-14 | Fujifilm Corp | Image display device |
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