CN106303487A - Gamma Gamma bearing calibration, Gamma correcting unit and TV - Google Patents
Gamma Gamma bearing calibration, Gamma correcting unit and TV Download PDFInfo
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- CN106303487A CN106303487A CN201610915396.1A CN201610915396A CN106303487A CN 106303487 A CN106303487 A CN 106303487A CN 201610915396 A CN201610915396 A CN 201610915396A CN 106303487 A CN106303487 A CN 106303487A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
- H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
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Abstract
The present invention provides a kind of Gamma bearing calibration, Gamma correcting unit and TV.The Gamma bearing calibration of the present invention includes: respectively the video layer signal in picture signal and graph layer signal are carried out Gamma correction；Described video layer signal after Gamma corrects and the described graph layer signal after Gamma corrects are mixed into unified signal, so that display screen shows according to described unified signal.The present invention is capable of preferable menu display effect.
Description
Technical field
The present invention relates to household appliance technical field, particularly relate to a kind of gamma Gamma bearing calibration, Gamma correcting unit and
TV.
Background technology
At present, TV has become requisite consumer electronics in family, thus TV image quality seems and more attaches most importance to
Want, and wherein, gamma curve is owing to can be used for adjusting the colour brightness of output picture, thus gamma curve is entered
Row correction, becomes the important measures improving picture quality of television.
Currently, the picture signal of TV can be divided into two parts, i.e. video layer (video layer) and graph layer (On Screen
Display, is called for short OSD layer), wherein, video layer is mainly used in realizing the process of picture signal and display, and graph layer is for real
The drafting of existing menu and display.Common, Gamma correction is carried out for TV and is typically at System on Chip/SoC (System on
Chip, is called for short SOC) in, wherein gamma curve is acted on video layer, then the video layer after Gamma correction process is believed
Number it is mixed into unified signal with without the graph layer signal of Gamma correction process, and transmits to display screen side, be positioned at display screen one
The screen of end drives plate (Timer Control Register is called for short TCON), and recycling gamma curve is to this unified signal again
Secondary process is once.And currently in order to strengthen the integrated level of TV chip, also screen can drive plate be integrated in System on Chip/SoC, this
Time only rely on that System on Chip/SoC is unified to carry out a gamma curve and process.
But, screen is driven the mode that plate is integrated in System on Chip/SoC, the video layer letter after Gamma correction process
Number mixing with without the graph layer signal of Gamma correction process and export to display screen, such graph layer signal does not pass through
Gamma correction process, thus the display effect of menu is poor.
Summary of the invention
The present invention provides a kind of Gamma bearing calibration, Gamma correcting unit and TV, the display of menu in display image
Effect is preferable.
First aspect, the present invention provides a kind of Gamma bearing calibration, including:
Respectively the video layer signal in picture signal and graph layer signal are carried out Gamma correction；
Video layer signal after Gamma corrects and the graph layer signal after Gamma corrects are mixed into unification
Signal, so that display screen shows according to unified signal.
Second aspect, the present invention provides a kind of gamma Gamma correcting unit, including:
Correction module, for carrying out Gamma correction to the video layer signal in picture signal and graph layer signal respectively；
Signal synthesizing module, for by the video layer signal after Gamma corrects and the figure after Gamma corrects
Layer signal is mixed into unified signal, so that display screen shows according to unified signal.
The third aspect, the present invention provides a kind of gamma Gamma correcting unit, including:
Communication interface, is used for obtaining picture signal；
Memorizer, is used for storing program；
Processor, for performing the program of memorizer storage, with respectively to the video layer signal in picture signal and figure
Layer signal carries out Gamma correction；
Processor is additionally operable to: by the video layer signal after Gamma corrects and the letter of the graph layer after Gamma corrects
Number it is mixed into unified signal, so that display screen shows according to unified signal.
Fourth aspect, the present invention provides a kind of TV, including display screen and Gamma correcting unit as above, Gamma
Correcting unit and display screen connect, to export through the corrected picture signal of Gamma to display screen.
Gamma antidote, Gamma correcting unit and the TV that the present invention provides, Gamma bearing calibration specifically includes elder generation
Respectively the video layer signal in picture signal and graph layer signal are carried out Gamma correction；Again by regarding after Gamma corrects
Frequently layer signal and the graph layer signal after Gamma corrects are mixed into unified signal, so that display screen enters according to unified signal
Row display.So by video layer signal in picture signal and graph layer signal are carried out Gamma correction respectively, it can be ensured that figure
Shape layer signal obtains Gamma correction, thus ensures image quality and the effect of the graph layer signals such as the menu in output picture.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is this
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Figure 1A is the schematic flow sheet of the Gamma bearing calibration that the embodiment of the present invention one provides；
Figure 1B is the schematic flow sheet of the another kind of Gamma antidote that the embodiment of the present invention one provides；
Fig. 1 C is the schematic flow sheet of another Gamma bearing calibration that the embodiment of the present invention one provides；
Fig. 1 D is the schematic flow sheet of the 4th kind of Gamma bearing calibration that the embodiment of the present invention one provides；
Fig. 2 A is the structural representation of the Gamma correcting unit that the embodiment of the present invention two provides；
Fig. 2 B is the structural representation of the another kind of Gamma correcting unit that the embodiment of the present invention one provides；
Fig. 3 is the structural representation of the Gamma correcting unit that the embodiment of the present invention three provides；
Fig. 4 is the structural representation of the TV that the embodiment of the present invention four provides.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
Figure 1A is the schematic flow sheet of the Gamma bearing calibration that the embodiment of the present invention one provides.As shown in Figure 1A, this enforcement
The Gamma bearing calibration that example provides, specifically can comprise the steps:
S101, respectively the video layer signal in picture signal and graph layer signal are carried out Gamma correction；
S102, by through Gamma correct after video layer signal and through Gamma correct after graph layer signal be mixed into
Unified signal, so that display screen shows according to unified signal.
General, the display terminal such as TV is when showing, due to the attribute that display terminal itself is intrinsic, as shown
The photoelectric characteristic etc. of screen, can cause exporting image and produce distortion relative to input signal.It is embodied in each ash of display screen
The color distortion on rank is relatively big, brightness disproportionation weighing apparatus etc..In order to avoid the distortion between display screen output image and input signal, need
Through Gamma trimming process, adjust the response curve between display terminal input and output, to improve the bright journey of display picture
The image quality effects such as degree and contrast.
Concrete, the picture signal that the display terminal such as TV is received includes video layer signal and graph layer signal,
Video layer (i.e. video layer) signal is mainly used in showing the main contents of video pictures, i.e. video and image；And graph layer (OSD
Layer) signal is then mainly used in carrying out drafting and the display of menu screen, such as the every menu etc. for regulating display screen parameter.For
Reach optimal picture display effect, respectively video layer signal and graph layer signal can be carried out Gamma correction respectively
Process.Concrete, carry out Gamma correction process process and generally carry out in System on Chip/SoC, System on Chip/SoC includes one or
Multiple processors and relevant memorizer, it is possible to perform video decoding by built-in command, video format is changed, audio frequency and video
The multiple difference in functionalitys such as signal synchronization and video pictures correction.In order to respectively video layer signal and graph layer signal be entered respectively
Row Gamma trimming process, is provided with the Gamma correction mechanism of two-way independence in System on Chip/SoC, can be respectively to regarding of receiving
Frequently layer signal and graph layer signal carry out Gamma correction.
When video layer signal and graph layer signal are all after Gamma corrects, two paths of signals can be mixed into unification
Signal, and this unified signal is exported to display screen side, so that display screen carries out video figure according to this mixed unified signal
The display of picture.Now, owing to the video layer in unified signal and audio layer have passed through Gamma correction the most, its gray-scale colors
Uniformity and overall lightness, contrast are all improved, so can reach optimal picture display effect.
Compare with the existing mode that only video layer signal is carried out Gamma correction process, the Gamma correction side of the present invention
Method, no matter whether screen logic plate is integrated on System on Chip/SoC, all can be to graph layer signal through once individually Gamma correction
Process, even if thus after video layer signal and graph layer signal are mixed into unified signal without Gamma correction and directly export,
Owing to video layer signal and graph layer signal correct through a Gamma the most, so also being able to ensure that graph layer signal has
Good chroma-luminance uniformity, image quality is protected.
In the present embodiment, Gamma bearing calibration specifically includes the most respectively to the video layer signal in picture signal and figure
Layer signal carries out Gamma correction；Again by the video layer signal after Gamma corrects and the graph layer after Gamma corrects
Signal is mixed into unified signal, so that display screen shows according to unified signal.So by by video layer in picture signal
Signal and graph layer signal carry out Gamma correction respectively, it can be ensured that graph layer signal obtains Gamma correction, thus ensures defeated
The image quality of the graph layer signals such as the menu in frame out and effect.
On the basis of above-described embodiment, each concrete steps for Gamma bearing calibration are carried out in detail individually below
Explanation.
Concrete, respectively the video layer signal in picture signal and graph layer signal are being carried out Gamma timing, specifically
Can utilize different gamma curve that unlike signal is individually corrected.Figure 1B is the another of the embodiment of the present invention one offer
A kind of schematic flow sheet of Gamma antidote.As shown in Figure 1B, now step S101 specifically can include following content:
S1011, utilize the first gamma curve that the video layer signal in picture signal is carried out Gamma correction, utilize second
Gamma curve carries out Gamma correction to the graph layer signal in picture signal.
Wherein, the first gamma curve has an optimal calibration result to video layer signal, and the second gamma curve for
Graph layer signal has optimal calibration result.So carry out Gamma timing at needs, utilize a Gamma bent independently
Video layer signal is corrected by line, and utilizes the second gamma curve to be corrected graph layer signal.Thus, video layer
What signal and graph layer signal all energy were independent obtains Gamma correction process, and the image quality that display screen is exported can be had
Effect is improved.
Wherein, the Gamma being respectively used to be corrected for video layer signal in picture signal and graph layer signal is bent
Line and the second gamma curve, can preset be stored in the software of TV or other display terminal, and the first gamma curve
Can be identical or different curves with the second gamma curve, as long as each to video layer signal or graph layer signal
Calibration result is most preferably.
So, by arranging different gamma curve, with respectively to video layer signal in picture signal and graph layer signal
Carry out Gamma correction, it is ensured that video layer signal and graph layer signal all can obtain optimal Gamma calibration result, thus
Ensure that the image quality of display screen output image.
Optionally, owing to TV or display terminal have certain individual difference, institute is for carrying out Gamma correction
Gamma curve be difficult to be universally applied to each TV or display terminal；Furthermore, it is also possible to there is other factor,
Gamma curve preset in making TV or display terminal is difficult to reach optimal calibration result.Now, should for each not
Same TV, is adjusted the most preset gamma curve, to guarantee that this TV or this display terminal can reach optimal
Picture display effect.Fig. 1 C is the schematic flow sheet of another Gamma bearing calibration that the embodiment of the present invention one provides.Such as figure
Shown in 1C, concrete, utilize the first gamma curve that the video layer signal in picture signal is carried out Gamma correction, utilize
Before two gamma curve carry out Gamma correction to the graph layer signal in picture signal, this Gamma bearing calibration can also be wrapped
Include following steps:
S103, adjustment are used for carrying out the gamma curve of Gamma correction, and by the real image shown by display screen
Gamma curve when video layer signal reaches predetermined threshold value is as the first gamma curve；And/or
Adjust for carrying out the gamma curve of Gamma correction, and Gamma when graph layer signal is reached predetermined threshold value
Curve is as the second gamma curve.
In above-mentioned steps, adjust gamma curve and typically can carry out during the assembling of TV and display terminal, adjust
Synchronizing can be the most manual carrying out suddenly, it is also possible to is automatically adjusted by instrument or equipment.
When carrying out gamma curve and adjusting, need video layer signal and figure in the real image shown by display screen
Layer signal individually judges.When gamma curve adjusts to real image the contrast of video layer signal or color is bright
When dark uniformity has reached a default threshold value, show that now video layer signal reaches optimal display result, at this moment, can remember
Record and store gamma curve now, and as the first gamma curve；And when gamma curve adjusts to real image figure
Layer signal reaches predetermined threshold value, namely during optimal display result, and record storage gamma curve now, and as second
Gamma curve.So can ensure that the first gamma curve and the second gamma curve are respectively video layer signal and graph layer letter
Number optimal calibration trace.Afterwards, System on Chip/SoC and related software can be bent according to this first gamma curve and the 2nd Gamma
Line carries out corresponding Gamma correction to the video layer signal in picture signal and graph layer signal.
After the different layers in picture signal is carried out Gamma correction, can be by the video layer signal after correction and figure
Layer signal mixes, to synthesize unified signal.This unified signal can export to screen side, defeated to carry out corresponding image
Go out.
Owing to, in the display terminals such as TV, the screen logic plate for driving display screen to carry out exporting both can be integrated in and be
In system chip, it is also possible to be independently arranged, and screen logic plate can independently carry out Gamma correction process.Fig. 1 D is that the present invention is real
Execute the schematic flow sheet of the 4th kind of Gamma bearing calibration that example one provides.As shown in figure ip, accordingly, corresponding screen logic plate
The System on Chip/SoC framework being independently arranged, by the video layer signal after Gamma corrects and the figure after Gamma corrects
After layer signal is mixed into unified signal, Gamma bearing calibration can also comprise the steps:
S104, unified signal is carried out Gamma correction.
Concrete, the video layer signal after Gamma corrects and graph layer signal, be mixed into unified signal, need through
Cross the screen logic plate being independently arranged, and changed to show on a display screen by screen logic plate.At this point it is possible to utilize
Screen drives plate that unified signal carries out Gamma correction again.So there is the TV of the screen logic plate being independently arranged and show
Show terminal, again unified signal can be carried out Gamma correction.
Fig. 2 A is the structural representation of the Gamma correcting unit that the embodiment of the present invention two provides.As in figure 2 it is shown, this enforcement
The Gamma correcting unit 200 that example provides specifically may include that
Correction module 21, for carrying out Gamma correction to the video layer signal in picture signal and graph layer signal respectively；
Signal synthesizing module 22, for by the described video layer signal after Gamma corrects with after Gamma corrects
Described graph layer signal be mixed into unified signal, so that display screen shows according to described unified signal.
Concrete, Gamma correcting unit both can be that an independent device exists, it is also possible to is integrated in the displays such as TV
Terminal inner.At present, TV constantly develops towards intelligent, the direction of high image quality, typically has Full-open platform, and self takes
It is loaded with operating system, it is possible to achieve the application of radio TV signals receiving, third party's program and the several functions such as surf the web.Thus,
TV as complete machine equally utilizes the disposal ability of self, it is achieved the function of Gamma correcting unit and execution step.Its
In, the picture signal as picture output both can be the digital high-definition television signal that television reception arrives, it is also possible to lead to for TV
Cross the Online Video acquired in network connection, or come from video or the picture file etc. of this locality.
Wherein, the correction module 21 in Gamma correcting unit can receive the picture signal from front end, due in TV
Picture signal superposition for showing the video layer of video pictures and for showing the graph layer controlling menu, so, correction
Module 21 can carry out Gamma correction to video layer signal and graph layer signal, respectively to respectively reach the optimal of video layer signal
The best picture display effect of picture display effect and graph layer signal.
After video layer signal and the most corrected module of graph layer signal 21 carry out Gamma correction, can pass through
Two paths of signals is mixed into unified signal by signal synthesizing module 22, and exports this unified signal to display screen side, so that display
Screen carries out the display of video image according to this mixed unified signal.Now, due to the video layer in unified signal and audio frequency
Layer have passed through Gamma correction the most, and the uniformity of its gray-scale colors and overall lightness, contrast are all improved, institute
Can reach optimal picture display effect.
Concrete, as one preferred embodiment, correction module 21 specifically for:
Utilize the first gamma curve that the video layer signal in picture signal is carried out Gamma correction, utilize the 2nd Gamma
Curve carries out Gamma correction to the graph layer signal in picture signal.
Wherein, video layer signal and graph layer signal are had most preferably by the first gamma curve and the second gamma curve respectively
Calibration result, so carry out Gamma timing at needs, the first gamma curve can be utilized independently to video layer signal
It is corrected, and utilizes the second gamma curve that graph layer signal is corrected, so that video layer signal and graph layer signal are equal
Can independently obtain Gamma correction process, the image quality allowing display screen be exported can be effectively improved.Oneth Gamma is bent
Line and the second gamma curve, can preset be stored in the software of TV or other display terminal, is carrying out Gamma correction
Time, correction module 21 can call voluntarily.
So, by arranging different gamma curve, with respectively to video layer signal in picture signal and graph layer signal
Carry out Gamma correction, it is ensured that video layer signal and graph layer signal all can obtain optimal Gamma calibration result, thus
Ensure that the image quality of display screen output image.
Fig. 2 B is the structural representation of the another kind of Gamma correcting unit that the embodiment of the present invention one provides.As shown in Figure 2 B,
Optimal picture display effect all can be reached in order to ensure each TV or display terminal.Gamma correcting unit 300 has
Body can also include curve adjusting module 23, and curve adjusting module 23 is utilizing the first gamma curve to regarding in picture signal
Frequently layer signal carries out Gamma correction, utilizes the second gamma curve that the graph layer signal in picture signal is carried out Gamma correction
Before, it is additionally operable to the gamma curve adjusted for carrying out Gamma correction, and by regarding in the real image shown by display screen
Frequently gamma curve when layer signal reaches predetermined threshold value is as the first gamma curve；And/or adjustment is used for carrying out Gamma correction
Gamma curve, and gamma curve when graph layer signal reaches predetermined threshold value is as the second gamma curve.
Wherein, the contrast of video layer signal or the uniform of color shade are adjusted to real image when gamma curve
When property has reached a default threshold value, show that now video layer signal reaches optimal display result, at this moment, can be by now
Gamma curve is as the first gamma curve；And reach to preset threshold when gamma curve adjusts to real image graph layer signal
Value, namely during optimal display result, gamma curve now is as the second gamma curve.So can ensure first
Gamma curve and the second gamma curve are respectively the optimal calibration trace of video layer signal and graph layer signal.
Additionally, for adapting to different system architectures, signal synthesizing module 22 is by the video layer letter after Gamma corrects
Number and through Gamma correct after graph layer signal be mixed into unified signal after, be additionally operable to unified signal is carried out Gamma school
Just.
Concrete, it is possible to use independent screen drives plate that unified signal carries out Gamma correction again.Screen drives plate
Separate with System on Chip/SoC, and it is able to receive that the unified signal that System on Chip/SoC spreads out of, and unified signal is being included
Gamma corrects after interior a series of process, then exports to display screen and show.So there is the screen logic being independently arranged
The TV of plate and display terminal, can carry out Gamma correction to unified signal again.
Technical scheme based on above-described embodiment, no matter whether screen logic plate is integrated in system core to Gamma correcting unit
On sheet, all can be to graph layer signal through once single Gamma trimming process, even if thus by video layer signal and graph layer
Signal directly exports, due to video layer signal and graph layer signal the most without Gamma correction after being mixed into unified signal
Crossing a Gamma correction, so also being able to ensure that graph layer signal has good chroma-luminance uniformity, image quality obtains
Ensure.
In the present embodiment, Gamma correcting unit specifically includes correction module, for respectively to the video layer in picture signal
Signal and graph layer signal carry out the correction module of Gamma correction；And for by the described video layer after Gamma corrects
Signal and the described graph layer signal after Gamma corrects are mixed into unified signal, so that display screen is according to described unified letter
Number carry out the signal synthesizing module shown.So by video layer signal in picture signal and graph layer signal are carried out respectively
Gamma corrects, it can be ensured that graph layer signal obtains Gamma correction, thus ensures that the graph layers such as the menu exporting in picture are believed
Number image quality and effect.
Fig. 3 is the structural representation of the Gamma correcting unit that the embodiment of the present invention three provides.As it is shown on figure 3, the present embodiment
The Gamma correcting unit 400 provided, specifically includes:
Communication interface 31, is used for obtaining picture signal；
Memorizer 32, is used for storing program；
Processor 33, for performing the program of memorizer storage, with respectively to the video layer signal in picture signal and figure
Shape layer signal carries out Gamma correction；
Processor 33 is additionally operable to: by the video layer signal after Gamma corrects and the graph layer after Gamma corrects
Signal is mixed into unified signal, so that display screen shows according to unified signal.
Wherein, communication interface 31 and TV or other display terminals are attached, and are used for obtaining and export various data
And instruction.Memorizer 32 can comprise various RAM memory or nonvolatile memory (non-volatile memory).
And the form of processor 33 may be central processing unit (Central Processing Unit, referred to as CPU) or special
Determine integrated circuit (Application Specific Integrated Circuit, referred to as ASIC), then or be configured
Become to implement one or more integrated circuits of the embodiment of the present invention.Processor 33 is the control centre of Gamma correcting unit, utilizes
Various interfaces and the various piece of the whole device of connection, be stored in the software program in memorizer 32 by running or performing
And/or module, and call the data being stored in memorizer 32, and perform the various functions of device and process data, thus real
Existing Gamma calibration function.
Concrete, Gamma correcting unit 300 both can be that an independent device exists, it is also possible to is integrated in TV etc.
Inside display terminal, such as on System on Chip/SoC.At present, TV constantly develops towards intelligent, the direction of high image quality, typically has
Full-open platform, and self it is equipped with operating system, it is possible to achieve the application of radio TV signals receiving, third party's program and online punching
The several functions such as wave.Thus, equally utilize the disposal ability of self as the TV of complete machine, it is achieved Gamma correcting unit
The function of 300 and execution step.Wherein, the picture signal as picture output both can be the digital high-definition electricity that television reception arrives
Depending on signal, it is also possible to for TV by network connect acquired in Online Video, or come from this locality video or picture
File etc..
Optionally, processor 33 specifically may be used for:
Utilize the first gamma curve that the video layer signal in picture signal is carried out Gamma correction, utilize the 2nd Gamma
Curve carries out Gamma correction to the graph layer signal in picture signal.
Optionally, as the optional embodiment of another kind, processor 33 specifically can be also used for utilizing a Gamma
Curve carries out Gamma correction to the video layer signal in picture signal, utilizes the second gamma curve to the figure in picture signal
Before layer signal carries out Gamma correction, adjust the gamma curve for carrying out Gamma correction, and by the reality shown by display screen
Gamma curve when video layer signal in the image of border reaches predetermined threshold value is as the first gamma curve；And/or adjustment is used for
Carry out the gamma curve of Gamma correction, and gamma curve when graph layer signal reaches predetermined threshold value is as the 2nd Gamma
Curve.So can ensure that the first gamma curve and the second gamma curve are respectively video layer signal and graph layer signal
Good calibration trace.
Optionally, processor 33 specifically can be also used for by the video layer signal after Gamma corrects and process
After graph layer signal after Gamma correction is mixed into unified signal, unified signal is carried out Gamma correction.
Further, processor 33 may be used for utilizing screen to drive plate that unified signal is carried out Gamma correction.
Concrete, the video layer signal after Gamma corrects and graph layer signal, be mixed into unified signal, need through
Cross the screen logic plate being independently arranged, and changed to show on a display screen by screen logic plate.At this point it is possible to utilize
Screen drives plate that unified signal carries out Gamma correction again.So there is the TV of the screen logic plate being independently arranged and show
Show terminal, again unified signal can be carried out Gamma correction.
In the present embodiment, Gamma correcting unit includes the communication interface for obtaining picture signal；For storing program
Memorizer；And for performing the program of memorizer storage, respectively the video layer signal in picture signal and graph layer are believed
Number carry out Gamma correction, and by the video layer signal after Gamma corrects and the graph layer signal after Gamma corrects
It is mixed into unified signal, so that display screen carries out the processor shown according to unified signal.So by will picture signal regard
Frequently layer signal and graph layer signal carry out Gamma correction respectively, it can be ensured that graph layer signal obtains Gamma correction, thus protects
The image quality of the graph layer signals such as the menu in card output picture and effect.
Fig. 4 is the structural representation of the TV that the embodiment of the present invention four provides.As shown in Figure 4, the electricity that the present embodiment provides
Display screen 42 and the Gamma correcting unit 41 as described in above-described embodiment three, Gamma correcting unit 41 He is specifically included depending on 500
Display screen 42 connects, to export through the corrected picture signal of Gamma to display screen 42.
Wherein, the structure of Gamma correcting unit 41 is similar with previous embodiment with function, and is able to carry out aforementioned enforcement
All Gamma antidotes provided in example one, therefore here is omitted.Meanwhile, the Gamma correcting unit 41 of TV 400
Structure all similar with existing intelligent television with function, such as Gamma correcting unit 41 specifically can be integrated in system core
In sheet, and include corresponding process circuit etc., therefore Gamma correcting unit 41 can be applied to existing by those skilled in the art
TV on, with realize graph layer is carried out Gamma calibration function.
In the present embodiment, TV includes that display screen and Gamma correcting unit, Gamma correcting unit and display screen connect, with
Export through the corrected picture signal of Gamma to display screen.So Gamma correcting unit in TV can be by by image
In signal, video layer signal and graph layer signal carry out Gamma correction respectively, it can be ensured that graph layer signal obtains Gamma school
Just, thus ensure image quality and the effect of the graph layer signals such as menu in display screen output picture.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each method embodiment can be led to
The hardware crossing programmed instruction relevant completes.Aforesaid program can be stored in a computer read/write memory medium.This journey
Sequence upon execution, performs to include the step of above-mentioned each method embodiment；And aforesaid storage medium includes: ROM, RAM, magnetic disc or
The various media that can store program code such as person's CD.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (11)
1. a gamma Gamma bearing calibration, it is characterised in that including:
Respectively the video layer signal in picture signal and graph layer signal are carried out Gamma correction；
Described video layer signal after Gamma corrects and the described graph layer signal after Gamma corrects are mixed into
Unified signal, so that display screen shows according to described unified signal.
Gamma bearing calibration the most according to claim 1, it is characterised in that described respectively to the video in picture signal
Layer signal and graph layer signal carry out Gamma correction, specifically include:
Utilize the first gamma curve that the described video layer signal in described picture signal is carried out Gamma correction, utilize second
Gamma curve carries out Gamma correction to the described graph layer signal in described picture signal.
Gamma bearing calibration the most according to claim 2, it is characterised in that described utilize the first gamma curve to described
Described video layer signal in picture signal carries out Gamma correction, utilizes the second gamma curve to the institute in described picture signal
State before graph layer signal carries out Gamma correction, also include:
Adjust the gamma curve for carrying out Gamma correction, and by the video layer in the real image shown by described display screen
Gamma curve when signal reaches predetermined threshold value is as described first gamma curve；And/or
Adjust for carrying out the gamma curve of Gamma correction, and Gamma when described graph layer signal is reached predetermined threshold value
Curve is as described second gamma curve.
4. according to the Gamma bearing calibration described in any one of claim 1-3, it is characterised in that described will correct through Gamma
After described video layer signal and through Gamma correct after described graph layer signal be mixed into unified signal after, also include:
Described unified signal is carried out Gamma correction.
Gamma bearing calibration the most according to claim 4, it is characterised in that described described unified signal is carried out Gamma
Correction, specifically includes: utilize screen to drive plate that described unified signal is carried out Gamma correction.
6. a gamma Gamma correcting unit, it is characterised in that including:
Correction module, for carrying out Gamma correction to the video layer signal in picture signal and graph layer signal respectively；
Signal synthesizing module, for by through Gamma correct after described video layer signal and through Gamma correct after described in
Graph layer signal is mixed into unified signal, so that display screen shows according to described unified signal.
Gamma correcting unit the most according to claim 6, it is characterised in that described correction module specifically for:
Utilize the first gamma curve that the described video layer signal in described picture signal is carried out Gamma correction, utilize second
Gamma curve carries out Gamma correction to the described graph layer signal in described picture signal.
Gamma correcting unit the most according to claim 7, it is characterised in that also include: curve adjusting module, described song
Line adjusting module is utilizing the first gamma curve that the described video layer signal in described picture signal is carried out Gamma correction, profit
Before the described graph layer signal in described picture signal being carried out Gamma correction by the second gamma curve, it is additionally operable to:
Adjust the gamma curve for carrying out Gamma correction, and by the video layer in the real image shown by described display screen
Gamma curve when signal reaches predetermined threshold value is as described first gamma curve；And/or
Adjust for carrying out the gamma curve of Gamma correction, and Gamma when described graph layer signal is reached predetermined threshold value
Curve is as described second gamma curve.
9. according to the Gamma correcting unit described in any one of claim 6-8, it is characterised in that described signal synthesizing module exists
Described video layer signal after Gamma corrects and the described graph layer signal after Gamma corrects are mixed into unification
After signal, it is additionally operable to described unified signal is carried out Gamma correction.
10. a gamma Gamma correcting unit, it is characterised in that including:
Communication interface, is used for obtaining picture signal；
Memorizer, is used for storing program；
Processor, for performing the program of described memorizer storage, with respectively to the video layer signal in described picture signal and
Graph layer signal carries out Gamma correction；
Described processor is additionally operable to: by through Gamma correct after described video layer signal and through Gamma correct after described in
Graph layer signal is mixed into unified signal, so that display screen shows according to described unified signal.
11. 1 kinds of TVs, it is characterised in that include display screen and Gamma correcting unit as claimed in claim 10, described
Gamma correcting unit and described display screen connect, to export through the corrected picture signal of Gamma to described display screen.
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| CN201610915396.1A CN106303487A (en) | 2016-10-20 | 2016-10-20 | Gamma Gamma bearing calibration, Gamma correcting unit and TV |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020011979A1 (en) * | 2000-07-27 | 2002-01-31 | Hiroyuki Nitta | Liquid crystal driving device for controlling a liquid crystal panel and liquid crystal display apparatus |
| CN1697010A (en) * | 2004-05-12 | 2005-11-16 | 索尼株式会社 | Drive circuit for flat display apparatus and flat display apparatus |
| CN100428031C (en) * | 2002-07-17 | 2008-10-22 | 三洋电机株式会社 | Display device and its gamma correcting method |
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2016
- 2016-10-20 CN CN201610915396.1A patent/CN106303487A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020011979A1 (en) * | 2000-07-27 | 2002-01-31 | Hiroyuki Nitta | Liquid crystal driving device for controlling a liquid crystal panel and liquid crystal display apparatus |
| CN100428031C (en) * | 2002-07-17 | 2008-10-22 | 三洋电机株式会社 | Display device and its gamma correcting method |
| CN1697010A (en) * | 2004-05-12 | 2005-11-16 | 索尼株式会社 | Drive circuit for flat display apparatus and flat display apparatus |
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