CN102194411A - Picture adjusting method, device and system - Google Patents
Picture adjusting method, device and system Download PDFInfo
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- CN102194411A CN102194411A CN2010101218284A CN201010121828A CN102194411A CN 102194411 A CN102194411 A CN 102194411A CN 2010101218284 A CN2010101218284 A CN 2010101218284A CN 201010121828 A CN201010121828 A CN 201010121828A CN 102194411 A CN102194411 A CN 102194411A
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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 LCD 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 make the field in LCD application more and more widely.Wherein, the LED-backlit source is made up of LED.In the process that display frame is adjusted, normally LED is carried out the brightness adjustment and view data is adjusted, to reach the purpose of adjusting the display frame effect.
In the prior art,, 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, promptly the overall dynamics adjustment is carried out in display frame for reaching the purpose of adjusting the display frame effect.
Though adopt the method for overall dynamics adjustment can reach the purpose of adjusting the display frame effect,, therefore cause the power consumption of backlight bigger because this kind of employing method need be opened all LED on the backlight.
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;
From the illuminometer that sets in advance, inquire the electric signal of the brightness data of described appointment LED backlight when being in described appointment opening degree and the described appointment LED brightness data correspondence of backlight when being in described appointment opening degree, the electric signal of the brightness data correspondence 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;
The 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 to be provided with illuminometer, the electric signal of the brightness data correspondence 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 is used for inquiring from described illuminometer the electric signal of the brightness data of described appointment LED backlight when being in described appointment opening degree and the described appointment LED brightness data correspondence of backlight when being in described appointment opening degree;
Generation module is used for being in according to described appointment LED the 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; From the illuminometer that sets in advance, inquire the electric signal of the brightness data of described appointment LED backlight when being in described appointment opening degree and the described appointment LED brightness data correspondence of backlight when being in described appointment opening degree, the electric signal of the brightness data correspondence 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; The 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 of the brightness data correspondence of backlight was 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 of the brightness data correspondence of backlight when being used to receive described appointment LED and being in described appointment opening degree, and the electric signal of the brightness data correspondence of backlight drives backlight when specifying LED to be in described appointment opening degree;
Described liquid crystal display circuit is used to receive 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 the electric signal that this appointment LED is in the brightness data correspondence of backlight when specifying opening degree, the 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 purpose of energy saving.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
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 for specifying a kind of synoptic diagram of the control area of LED on the backlight of the present invention;
Fig. 3 b is for specifying the another kind of synoptic diagram of 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 is obtained 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, this method comprises:
Step 101, 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 comprises the LED of the need unlatching in the backlight;
Backlight in the present embodiment can be the side light type LED back light source, and this side light type LED back light 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 bigger pixel of pixel gray level value is corresponding to the bigger 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 the opening degree of the LED that LED that needs open and this need open in the present embodiment according to the current frame original image data, 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 Flame 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 the current frame original image data are carried out Flame Image Process, so the present frame GTG threshold value of each frame current frame original image data correspondence all is different.
With Fig. 1 b is example, and 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 the LED of the pixel correspondence with specified pixel GTG value from the location map table, this location map table comprises the LED that pixel is corresponding with this pixel, and this LED of pixel correspondence with specified pixel GTG value is 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 bigger GTG value, so the pixel of this specified pixel GTG value is corresponding to the bigger brightness data of brightness value.In the present embodiment,, need to open the LED of pixel correspondence with specified pixel GTG value for reaching the required brightness data of pixel of specified pixel GTG value.
Shown in Fig. 1 b, the LED of the pixel correspondence 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.The brightness data of big more this GTG value correspondence of GTG value is big more.Therefore the ratio of the GTG value that neighbor pixel can be gathered and maximum gray value is promptly specified the GTG value/maximum gray value of opening degree=neighbor pixel set as this appointment opening degree of specifying LED.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.
Step 102, from the illuminometer that sets in advance, inquire the electric signal of this appointment LED brightness data correspondence of backlight when being in the brightness data of backlight when specifying opening degree and this appointments LED and being in the appointment opening degree, the electric signal of the brightness data correspondence of backlight when this illuminometer comprises 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, then can be in advance test out the brightness data of one or more backlight when specifying LED to be in different opening degrees by optical test equipment, and illuminometer is set, comprise the corresponding electric signal of brightness data of backlight when the brightness data of backlight when specifying LED to be in different opening degrees with 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 the electric signal that this appointment LED is in the brightness data correspondence of backlight when specifying opening degree from illuminometer.
In the present embodiment, the electric signal that this appointment LED is in the brightness data correspondence of backlight when specifying opening degree is used for backlight is driven.Particularly, the electric signal that this appointment LED that inquires can be in the brightness data correspondence of backlight when specifying opening degree sends to backlight source driving circuit, and the electric signal of the brightness data correspondence 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 open to specify opening degree.
Step 103, when specifying LED to be in to specify opening degree the brightness data and the current frame original image data of backlight, generate the present frame output image data;
In the present embodiment, the 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 the brightness value of this pixel correspondence carry out computing, generate the present frame output image data.The aforementioned calculation processing procedure can be heightened the pixel gray level value of each pixel in the current frame original image data, thereby reaches the effect that the present frame output image data is strengthened.For example: can adopt the brightness value of this pixel correspondence in the brightness data of Gauss algorithm backlight and when specifying LED to be in to specify opening degree to carry out computing to the pixel gray level value of the pixel in the current frame original image data.
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 of present frame output image data correspondence to by the liquid crystal display circuit, and according to electric signal display frame on liquid crystal display of present frame output image data correspondence.
In the present embodiment, the electric signal of the brightness data correspondence of backlight and the present frame output image data of generation have been realized the adjustment to display frame when being in the appointment opening degree by this appointment LED.
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 the electric signal that this appointment LED is in the brightness data correspondence of backlight when specifying opening degree, the 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 purpose of energy saving.
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, this 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; On backlight, 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 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 for specifying a kind of synoptic diagram of the control area of LED on the backlight of the present invention.With Fig. 3 a is example, and 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 the brightness value of each pixel correspondence 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 according to formula M=B*T through the light of liquid crystal display, 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 by formula M=B*T through the light of liquid crystal display.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 intensity of variation difference for the brightness value of different liquid crystal display light, therefore need calculate brightness changing value 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 through the light of liquid crystal display.For example: when M=200nits, Rc=5% and T=4%, calculate brightness cut off value I=250nits according to formula I=M*Rc/T.
On backlight, 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 according to this brightness cut off value.Particularly, can be with control area, the zone formed more than or equal to the pixel of the brightness value correspondence of brightness cut off value in the brightness data of backlight as the appointment LED that is in this arbitrary opening degree, with territory, noncontrolled area, the zone formed less than the pixel of the brightness value correspondence of brightness cut off value in the brightness data of backlight as appointment LED.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 of the brightness data correspondence 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 the liquid crystal display of this control area correspondence, 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 the liquid crystal display of this territory, noncontrolled area correspondence.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 for specifying the another kind of synoptic diagram of 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 appointment LED 22 on being positioned at LED lamp bar 200 and appointment LED 23 open simultaneously, can measure the brightness data of backlight when specifying LED 22 and specifying LED 23 to be in arbitrary opening degree by optical test equipment, each pixel that the brightness data of backlight comprises liquid crystal display when specifying LED 22 and specifying LED 23 to be in arbitrary opening degree corresponding brightness value on backlight.
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 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.
On backlight, 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 according to this brightness cut off value.Particularly, can be with control area, the zone formed more than or equal to the pixel of the brightness value correspondence of brightness cut off value in the brightness data of backlight as the appointment LED that is in arbitrary opening degree, with in the brightness data of backlight less than territory, noncontrolled area, the zone of the pixel composition of the brightness value correspondence of brightness cut off value as the appointment LED that is in this opening degree.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 shown in Fig. 3 b 22 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 of the brightness data correspondence 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.
Particularly, can carry out computing to the brightness value in the current frame original image data corresponding to this pixel correspondence 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, and can carry out computing, generation present frame output image data to the brightness value in the current frame original image data corresponding to this pixel correspondence 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.
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 the electric signal that this appointment LED is in the brightness data correspondence of backlight when specifying opening degree, the 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 purpose of energy saving.By backlight being divided into the control area and the territory, noncontrolled area of specifying LED, and respectively the raw image data of control area and territory, noncontrolled area correspondence is handled, 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 handled and generate the present frame output image data, can effectively improve the contrast of 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 be provided with 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.
Further, in the present embodiment, module 111 is set can also be used to be provided with described location map table, described location map table comprises the LED that pixel is corresponding with described pixel.
Processing sub is used for described current frame original image data are carried out Flame Image Process, 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 from the location map table LED of the pixel correspondence with specified pixel GTG value, and described LED with pixel correspondence of 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; Be provided with that submodule is used for the GTG value of described neighbor pixel set and the ratio of maximum gray value is set to described appointment opening degree.
Further, when picture regulator 11 adopts FPGA or CPLD to realize, can with picture regulator 11 and machine core board is integrated in FPGA jointly 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 the electric signal that this appointment LED is in the brightness data correspondence of backlight when specifying opening degree, the 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 purpose of energy saving.
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 of the brightness data correspondence of backlight when backlight source driving circuit 2 is used to receive described appointment LED and is in described appointment opening degree, and the electric signal of the brightness data correspondence of backlight drives backlight when specifying LED to be in described appointment opening degree;
Liquid crystal display circuit 3 is used to receive described present frame output image data, convert the present frame output image data electric signal of this present frame output image data correspondence to, and according to electric signal display frame on liquid crystal display of described present frame output image data correspondence.
In the present embodiment, picture regulator 11 can be provided with 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 the foregoing description 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 the foregoing description 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 the electric signal that this appointment LED is in the brightness data correspondence of backlight when specifying opening degree, the 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 backlight is driven according to the electric signal that this appointment LED is in the brightness data correspondence of backlight when specifying opening degree by backlight source driving circuit, by of electric signal on liquid crystal display the display frame of liquid crystal display circuit according to present frame output image data correspondence.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 purpose of energy saving.
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 put 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 (11)
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;
From the illuminometer that sets in advance, inquire the electric signal of the brightness data of described appointment LED backlight when being in described appointment opening degree and the described appointment LED brightness data correspondence of backlight when being in described appointment opening degree, the electric signal of the brightness data correspondence 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;
The 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.
2. method according to claim 1 is characterized in that, the current frame original image data that described basis receives 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 Flame Image Process, 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 the LED of the pixel correspondence with specified pixel GTG value from the location map table, described location map table comprises the LED that pixel is corresponding with described pixel, and described LED with pixel correspondence of 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.
3. 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.
4. method according to claim 3 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 of the brightness data correspondence of backlight write described illuminometer when appointment LED was in arbitrary opening degree.
5. method according to claim 4 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;
On backlight, 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 according to described brightness cut off value.
6. method according to claim 5 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 on backlight comprises with the territory, noncontrolled area that is in the appointment LED of described opening degree:
With control area, the zone formed more than or equal to the pixel of the brightness value correspondence of described brightness cut off value in the brightness data of backlight as the appointment LED that is in arbitrary opening degree, and with in the brightness data of backlight less than territory, noncontrolled area, the zone of the pixel composition of the brightness value correspondence of described brightness cut off value as the appointment LED that is in described opening degree.
7. according to the arbitrary described method of claim 3 to 6, it is characterized in that the electric signal of the brightness data correspondence of backlight comprised when described brightness data that inquires described appointment LED backlight when being in described appointment opening degree from the illuminometer that sets in advance and described appointment LED were in described appointment opening degree:
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 from described illuminometer, inquire the electric signal of this appointment LED brightness data correspondence of backlight when being in this appointment opening degree.
8. method according to claim 7 is characterized in that, the 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.
9. a picture regulator is characterized in that, comprising:
Module is set, be used to be provided with illuminometer, the electric signal of the brightness data correspondence 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 is used for inquiring from described illuminometer the electric signal of the brightness data of described appointment LED backlight when being in described appointment opening degree and the described appointment LED brightness data correspondence of backlight when being in described appointment opening degree;
Generation module is used for being in according to described appointment LED the brightness data and the described current frame original image data of backlight when specifying opening degree, generates the present frame output image data.
10. device according to claim 9 is characterized in that,
The described module that is provided with also is used to be provided with described location map table, and described location map table comprises the LED that pixel is corresponding with described pixel;
Described determination module comprises:
Processing sub, be used for described current frame original image data are carried out Flame Image Process, 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 about submodule, be used for inquiring from the location map table LED of the pixel correspondence with specified pixel GTG value, described LED with pixel correspondence of 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.
11. 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; From the illuminometer that sets in advance, inquire the electric signal of the brightness data of described appointment LED backlight when being in described appointment opening degree and the described appointment LED brightness data correspondence of backlight when being in described appointment opening degree, the electric signal of the brightness data correspondence 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; The 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 of the brightness data correspondence of backlight was 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 of the brightness data correspondence of backlight when being used to receive described appointment LED and being in described appointment opening degree, and the electric signal of the brightness data correspondence of backlight drives backlight when specifying LED to be in described appointment opening degree;
Described liquid crystal display circuit, be used to receive described present frame output image data, convert this present frame output image data the electric signal of present frame output image data correspondence to, and according to electric signal display frame on liquid crystal display of described present frame output image data correspondence.
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| CN 201010121828 CN102194411B (en) | 2010-03-10 | 2010-03-10 | Picture adjusting method, device and system |
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| CN102194411B (en) | 2013-05-01 |
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