CN102800285A - Display device capable of controlling external lamp source and external lamp source control method - Google Patents
Display device capable of controlling external lamp source and external lamp source control method Download PDFInfo
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- CN102800285A CN102800285A CN201110148158XA CN201110148158A CN102800285A CN 102800285 A CN102800285 A CN 102800285A CN 201110148158X A CN201110148158X A CN 201110148158XA CN 201110148158 A CN201110148158 A CN 201110148158A CN 102800285 A CN102800285 A CN 102800285A
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Abstract
The invention discloses a display device capable of controlling an external lamp source and an external lamp source control method. According to the external lamp source control method, the picture display of the display device and the external lamp source can be controlled synchronously by a synchronizing signal provided by the display device. The synchronizing signal is generated by a control module arranged in the display device, the control module generates a first lamp source control signal in the first period of the synchronizing signal and generates a second lamp source control signal in the second period of the synchronizing signal, the first lamp source control signal is used for controlling the operation of the external lamp source to be in a first operation state, and the second lamp source control signal is used for controlling the operation of the external lamp source to be in a second operation state. According to the technical measure that the external lamp source is controlled by the display device, the luminance of the external lamp source is darkened or reduced every other particular period, so that the influence of the external lamp source on the contrast of the display device can be relieved; and besides the contrast of the display device is improved, and the reflection is relieved, the external lamp source can further achieve a power saving effect.
Description
Technical field
The present invention relates to a kind of display device, the display device and the control method thereof in particularly a kind of may command external modulation source.
Background technology
LCD TV and plasma-screen television are being held under the arm gently, are being approached, large-sized advantage, the first-selection when having become many people and buying more TV.Selecting a critical specifications of TV or display at present is to be correlative value.Contrast is meant the brightness of the brightness of display white divided by black, and numerical value is high more, represents display just in sharp contrast more, and image quality is relatively good naturally, can show more rich stereovision.What hereat the display dealer pursued is that correlative value is high more good more.
All be to be defined in the darkroom that brightness is lower than 1lux to measure at present for the contrast specification of display, however such definition and not exclusively gearing to actual circumstances.Chief reason has the ambient light source when being actual use display usually, but the specification of correlative value is not under the situation that the ambient light source is arranged, to measure.When seeing TV usually, can keep a bright environment to the indoor lamp standard-sized sheet traditionally; Therefore for the requirement of correlative value; Only see that the darkroom contrast is not enough, also take advantage of contribution, be only the effect that the human eye concept of reality is seen through adding of external modulation source brightness in bright indoor contrast.
Because, therefore improving correlative value divided by the brightness of black, the brightness that is defined as display white of correlative value can reach through increasing white image brilliance or reducing black image brightness.But improve the brightness of white image, one is subject to backlight technology and the relevant optical module material of leaded light now, significantly increases and can't have, and two will certainly increase the consumption of backlight module power.Reduce black image brightness from another direction and but can obtain effect clearly; For instance; Original display white image brilliance and black image brightness are respectively 500nits and 1nits; Then correlative value is 500nits/l nits=500, promotes white image brilliance to 600nits, and then correlative value can promote and be 600nits/1nits=600.If to reduce black image brightness is 0.5nits, then correlative value can show to promote and is being 500nits/0.5nits=1000.
Though have the technology of dynamic contrast can solve the problem of contrast, still can increase the cost of display device and still receive the influence in external modulation source.Therefore, the ambient light source is needed a kind of technical scheme that need not increase the contrast effect of too many cost when improving the actual use of display badly to the influence of display device contrast when considering actual environment for use.
Summary of the invention
Because the problem that prior art met with; The present invention discloses a kind of control method and system that is applied to display; Switch or bright dark degree with the extraneous external modulation of synchro control source; Reaching the power saving effect in extraneous external modulation source, and further promote the display contrast effect or reduce reflex, use the problem that prior art met with that solves.
The display device in a kind of according to an embodiment of the invention may command external modulation source, it includes an image display module, a control module and a signal transmission module; Wherein the image display module is in order to show a multimedia image; Control module then responds a synchronous signal to produce one first lamp source control signal or one second lamp source control signal; Wherein this synchronizing signal produced during a plurality of period 1 that replace and a plurality of second rounds; When those period 1; Control module produces this first lamp source control signal respectively and comes from operation under one first mode of operation to control an external modulation; When those second rounds, control module produces this second lamp source control signal respectively and comes from operation under one second mode of operation to control this external modulation; Signal transmission module is then in order to transmit the first lamp source control signal and/or the second lamp source control signal.
The control method in a kind of according to an embodiment of the invention may command external modulation source, including periodically provides a synchronous signal, and this synchronizing signal produced during a plurality of period 1 that replace and a plurality of second rounds; When those a plurality of period 1, produce one first lamp source control signal respectively, this first control signal comes from operation under one first mode of operation in order to control an external modulation; Transmit this first lamp source and control signal to this external modulation source; When those a plurality of second rounds, produce one second lamp source control signal respectively, this second control signal comes from operation under one second mode of operation in order to control this external modulation; And transmit this second lamp source and control signal to this external modulation source.
The display device in may command external modulation source and control method according to an embodiment of the invention; But the switch or the bright dark degree in the extraneous external modulation of synchro control source are with power saving effect and lifting display contrast effect or the reduction reflex that reaches extraneous external modulation source.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 is the system architecture diagram of the display device in the may command external modulation source that the present invention disclosed;
First embodiment of the process flow diagram of the ambient light operated control method that Fig. 2 the present invention is disclosed;
The operation chart of first embodiment of the ambient light operated control method that Fig. 3 the present invention is disclosed;
Second embodiment of the process flow diagram of the ambient light operated control method that Fig. 4 the present invention is disclosed;
The operation chart of second embodiment of the ambient light operated control method that Fig. 5 the present invention is disclosed;
The 3rd embodiment of the process flow diagram of the ambient light operated control method that Fig. 6 the present invention is disclosed;
The operation chart of the 3rd embodiment of the ambient light operated control method that Fig. 7 the present invention is disclosed.
Wherein, Reference numeral
100 display device
110 display modules
120 backlight modules
130 control modules
140 signal transmission modules
200 ambient light sources
210 signal transmission modules
Embodiment
Below in embodiment, be described in detail detailed features of the present invention and advantage; Its content is enough to make any those skilled in the art to understand technology contents of the present invention and implements according to this; And according to content, claim scope and the accompanying drawing that this instructions disclosed, any those skilled in the art can understand purpose and the advantage that the present invention is correlated with easily.Following embodiment is a further explain viewpoint of the present invention, but non-to limit category of the present invention anyways.
Please refer to 1 figure, be the may command external modulation source that discloses for the present invention display device be the system Organization Chart.According to embodiments of the invention, the brightness of illumination in display device 100 may command external modulation sources 200 through this mode, further improves the contrast of display device.What the external modulation source 200 here referred generally to is the non-light source that is arranged in the display device, the for example lighting source in parlor.
When display device 100 is when adopting liquid crystal as display mode, to need collocation one backlight module (Backlight module) 120.Because liquid crystal itself is not luminous, so the function of backlight module promptly is according to the size of liquid crystal panel the area source that is evenly distributed to be provided, so that LCD screen can normal video picture.Backlight module is to adopt cold cathode fluorescent tube (CCFL) or light emitting diode (LED) as light source, but and non-limitingly only can be these two kinds of light sources.
The driving principle simple declaration of typical liquid crystal indicator is following.When the control circuit (perhaps aforesaid image display module 110) of liquid crystal indicator receives horizontal-drive signal (HorizontalSynchronization) and vertical synchronizing signal (Vertical Synchronization); Control circuit can produce corresponding control signal and input to data line signal output circuit and scanning-line signal output circuit respectively; Data line signal output circuit and scanning-line signal output circuit can produce input signal to different data lines and sweep trace according to this control signal then; Thereby control conducting and the potential difference (PD) at equivalent capacity two ends of the thin film transistor (TFT) of each pixel; And change the arrangement and the corresponding light penetration amount of liquid crystal molecule further, so that video data is shown on the panel.Because the control of thin portion running is not the technological category of institute of the present invention desire protection, therefore the driving principle of liquid crystal indicator only is described with the mode of general introduction at this.
Specifically, control module 130 response synchronizing signals are to produce one first lamp source control signal or one second lamp source control signal, and wherein synchronizing signal produced during a plurality of period 1 that replace and a plurality of second rounds.In one embodiment; In the time of during a plurality of period 1; Control module 130 produces the first lamp source control signal respectively and comes from operation under one first mode of operation to control an external modulation; In the time of during a plurality of second rounds, this control module produces this second lamp source control signal respectively and comes from operation under one second mode of operation to control this external modulation.
In one embodiment, here first mode of operation and second mode of operation is to be defined as the unlatching in external modulation source or to close.When the first lamp source control signal was expression desire unlatching external modulation source, then first mode of operation was the opening for the external modulation source, and second mode of operation is the closed condition in external modulation source just, and therefore the second lamp source control signal is that expression desires to close the external modulation source.Though this embodiment is defined as the opening in external modulation source and the closed condition in external modulation source respectively with first mode of operation and second mode of operation, also can be defined as closed condition and opening respectively on the contrary certainly.And among another embodiment, also can one first brightness that the external modulation source shows be defined as first mode of operation, one second brightness that the external modulation source shows is defined as second mode of operation.
Therefore, in other words, embodiments of the invention, except the open and close in synchro control ambient light source, the brightness in the lamp source that also can control environment.
The synchronizing signal of in the above embodiments, mentioning can be used vertical synchronizing signal (V-sync) in general television system.Vertical synchronizing signal is one of two basic synchronizing signals of display; Another is a horizontal-drive signal; Horizontal-drive signal has determined display to draw a time of crossing the screen line; Vertical synchronizing signal has determined display to sign in the bottom from the top of screen, return the time in original position again, so vertical synchronizing signal is also represented the renewal frequency of display.
In another embodiment, also can produce a synchronizing signal in addition certainly by control module 130 or other circuit.The purpose that is defined as synchronizing signal here is because this signal will cause display frame and ambient light source or back that the lamp of the backlight module of mentioning is controlled or the black plug picture carries out synchronously.Therefore; In another embodiment; Lamp source in the aforesaid backlight module also can respond this synchronous signal and make the lamp source operate in first mode of operation and second mode of operation, and first mode of operation and second mode of operation in first mode of operation here and the definition of second mode of operation and aforesaid external modulation source are similar.
In another embodiment, 130 a plurality of period 1 of response of control module or a plurality of second round are to produce a black plug picture.This embodiment can arrange in pairs or groups with the unlatching of aforementioned control backlight module or the embodiment that closes each other, and cooperates the control in external modulation source, to produce various correlative value.For example; Executing in the example for the moment; Control module 130 in a plurality of period 1 to produce one first backlight module control signal; The first backlight module control signal operates in one first mode of operation in order to control a backlight module, in a plurality of second rounds to produce one second backlight module control signal, the second backlight module control signal operates in one second mode of operation in order to control a backlight module.In another embodiment, control module 130 in a plurality of period 1 to produce one second backlight module control signal, the second backlight module control signal operates in second mode of operation in order to control a backlight module; Control module 130 in a plurality of second rounds to produce one first backlight module control signal, the first backlight module control signal operates in one first mode of operation in order to control a backlight module.The running details of this part will be described in detail in follow-up method flow.Certainly here the mode of operation of backlight module also is similar to mode of operation previously discussed, and also promptly this first mode of operation is the opening for backlight module, and second mode of operation is the closed condition for backlight module.And among another embodiment, also can one first brightness that backlight module shows be defined as first mode of operation, one second brightness that shows is defined as second mode of operation.
The technology that cooperates this display device 100, ambient light source 200 also is provided with signal transmission module 210, in order to receive the first lamp source control signal and the second lamp source control signal of above stated specification.Ambient light source 200 also can be provided with corresponding treatment circuit; To handle the first lamp source control signal and the second lamp source control signal, make ambient light source 200 can respond the first lamp source control signal and the second lamp source control signal and operate in first mode of operation and second mode of operation.
Among the aforesaid embodiment; Though use signal transmission module 140 and signal transmission module 210; Signal only is sent to ambient light source 200 by display device 100 and receives; Therefore unidirectional transmission and reception are only arranged, display device 100 can't further receive the signal that is transmitted by ambient light source 200.But in fact; But the signal that display device 100 can be designed to transmit in reception environment lamp source 200 to be to carry out different operation or control, therefore, though present embodiment signal is unidirectional transmission; Certainly signal transmission module also can be two-way transmission and reception have simultaneously and transmit and receiving function.
Below the collocation process flow diagram and aforesaid different embodiment of schematic view illustrating and technique effect.
Please refer to Fig. 2, is first embodiment of the process flow diagram of the ambient light operated control method that discloses for the present invention, arranges in pairs or groups in the lump with reference to figure 3, is the operation chart of the ambient light operated control method that discloses for the present invention.
At first, display device 100 periodically provides a synchronous signal (step 300), and this synchronizing signal produced during a plurality of period 1 that replace and a plurality of second rounds.In general television system, can use vertical synchronizing signal, certainly also can extra generation one synchronous signal.
Then, control module 130 produces one first lamp source control signal (step 310) respectively when a plurality of period 1, and this first control signal operates in one first state in order to control an external modulation source.Control module 130 produces one second lamp source control signal (step 320) respectively when a plurality of second round, this second lamp source control signal operates in one second state in order to control this external modulation source.
The step here is to be general description, and is in fact, as shown in Figure 3; In the period 1 (odd cycle T1, T3); Ambient light source 200 is to operate in first mode of operation, also is opening, in second round (even cycle T2, T4); Ambient light source 200 is to operate in second mode of operation, also is closed condition.Certainly; Though here opening is defined as first mode of operation and closed condition is defined as second mode of operation; Also can one first brightness that the ambient light source shows be defined as first mode of operation in another embodiment, one second brightness that the ambient light source shows is defined as second mode of operation.
And after the control module 130 generations first lamp source control signal; Just send the first lamp source control signal to ambient light source 200 (step 311), so that ambient light source 200 responds the first lamp source control signals and operates in first mode of operation (unlatching) or first brightness (step 312) with wired or wireless mode.
Likewise; After control module 130 produces the second lamp source control signal; Just send the second lamp source control signal to ambient light source 200 (step 321), so that ambient light source 200 operates in second mode of operation (closing) or second brightness (step 322) with wired or wireless mode.
Generally speaking, the external modulation source can add the brightness value of taking advantage of display show white image and black image simultaneously, supposes that this adds the value of taking advantage of and is λ, then actual measurement correlative value CR
λBe shown below:
CR
λ=(white image brilliance+λ)/(black image brightness+λ)
Because the brightness value of black image is very low numerical value, even less than 1 candle-meter square (cd/m
2Ornits) brightness so that the external modulation source adds the right variable effect of the brightness value λ that takes advantage of is very important, takes advantage of brightness value λ that 1 candle-meter square is only arranged even if add, and adds result after taking advantage of and can make CR
λCompare almost to appear significantly with ideal value and reduce.For instance, white image brilliance is 500nits, and black image brightness is 1nits, λ=1nits; The influence measured correlative value CR=500/1=500 that comes out in no external modulation source in the laboratory then, and the correlative value CR λ when considering ambient light effects=(500+1)/(1+1)=250.5.
According to aforesaid embodiment, the brightness in external modulation source is closed or reduced to every separated specific period, and the external modulation source that can reduce certain ratio adds the value of taking advantage of, and hereat can obtain higher time average correlative value.For instance; Each odd cycle, open in display device notice external modulation source, and even cycle is then notified the external modulation source of closing; The contrast of contrast when then opening when closing respectively accounts for the half the time cycle, can obviously promote average correlative value with not using to compare before this technology.
Because the cycle of general vertical synchronizing signal is more than the 60Hz, thus the switching frequency in external modulation source and be not easy the person of being used and discover, and can reach the effect of saving external modulation source power consumption simultaneously.Aforesaid embodiment can reach the effect that reduces display surface reflection extraneous light (Reflection) simultaneously; Especially showing further for the display that uses minute surface (Glare-type) panel; When open in the external modulation source; Part light can and then influence the quality that the user views and admires via panel reflection, so the present invention can reduce the influence of reflection through periodically closing the external modulation source.
Please refer to Fig. 4, is second embodiment of the process flow diagram of the ambient light operated control method that discloses for the present invention, arranges in pairs or groups in the lump with reference to figure 5 and Fig. 6, is the operation chart of the ambient light operated control method that discloses for the present invention.
At first, display device 100 periodically provides a synchronous signal (step 400), and this synchronizing signal produced during a plurality of period 1 that replace and a plurality of second rounds.In general television system, can use vertical synchronizing signal, certainly also can extra generation one synchronous signal.
Then; Control module 130 produces one first lamp source control signal (step 410) respectively when a plurality of period 1; This first control signal operates in one first mode of operation in order to control an external modulation source, and the first backlight module control signal operates in one first mode of operation in order to control a backlight module.Control module 130 produces one second lamp source control signal (step 420) respectively when a plurality of second round; This second lamp source control signal operates in one second mode of operation in order to control this external modulation source, and the second backlight module control signal operates in one second mode of operation in order to control a backlight module.In addition, control module 130 also can respond and produce an activation signal these a plurality of second rounds, produces a black plug picture (step 430) in order to activation image display module (perhaps wherein interlock circuit), and makes the image display module show a black picture.
In this embodiment, first mode of operation in external modulation source and second mode of operation and aforesaid embodiment are similar, and first mode of operation is defined as the opening or first brightness, and second mode of operation is defined as the closed condition or second brightness.And the definition of first mode of operation in first mode of operation of backlight module and second mode of operation and external modulation source and second mode of operation is similar; First mode of operation is defined as to be opened or first brightness, and second mode of operation is defined as closes or second brightness.
And after the control module 130 generations first lamp source control signal; Just send the first lamp source control signal to ambient light source 200 (step 411), so that ambient light source 200 responds the first lamp source control signals and operates in first mode of operation (unlatching) or show first brightness (step 412) with wired or wireless mode.Likewise; After control module 130 produces the first backlight module control signal; Then send backlight module (step 413) to, operate in first mode of operation (unlatching) so that backlight module responds the first backlight module control signal or show first brightness (step 414).Though what specify is here the step that transmits to be described with step 411 and step 413, is not in order to limit the sequencing of its transmission.
Likewise; After control module 130 produces the second lamp source control signal; Just send the second lamp source control signal to ambient light source 200 (step 421), so that ambient light source 200 operates in second mode of operation (closing) or shows second brightness (step 422) with wired or wireless mode.Likewise; After control module 130 produces the second backlight module control signal; Then send backlight module (step 423) to, operate in second mode of operation (closing) so that backlight module responds the second backlight module control signal or show second brightness (step 424).
With reference to figure 5 are the enforcement aspects for the embodiment of Fig. 4.In the period 1 (odd cycle T1, T3); Ambient light source 200 is to operate in first mode of operation with backlight module, also is opening, in second round (even cycle T2, T4); Ambient light source 200 is to operate in second mode of operation with backlight module, also is closed condition.In addition, in second round (even cycle T2, T4), the image display module can produce a black plug picture.Certainly, though here to open definition first mode of operation and to close definition second mode of operation, also can first mode of operation be defined as first brightness in another embodiment, second mode of operation is defined as second brightness.
In this embodiment, when the black plug picture, close display backlight and external modulation source, panel was difficult for producing the reflection in external modulation source when showed the black plug picture this moment; In comparison, the external modulation source is difficult for the puzzlement user via the reflection of panel when showing general picture, so this embodiment is fit to not like the user of panel reflection.
Please refer to Fig. 6, is the 3rd embodiment of the process flow diagram of the ambient light operated control method that discloses for the present invention, arranges in pairs or groups in the lump with reference to figure 7, is the operation chart of the ambient light operated control method that discloses for the present invention.
At first, display device 100 periodically provides a synchronous signal (step 500), and synchronizing signal produced during a plurality of period 1 that replace and a plurality of second rounds.In general television system, can use vertical synchronizing signal, certainly also can extra generation one synchronous signal.
Then; Control module 130 produces one second lamp source control signal and one first backlight module control signal (step 510) respectively when a plurality of period 1; This second lamp source control signal operates in one second mode of operation in order to control an external modulation source, and the first backlight module control signal operates in one first mode of operation in order to control a backlight module.Control module 130 produces the one first lamp source control signal and the second backlight module control signal (step 520) respectively when a plurality of second round; This first lamp source control signal operates in one first mode of operation in order to control this external modulation source, and the second backlight module control signal operates in one second mode of operation in order to control a backlight module.In addition, control module 130 also can respond and produce an activation signal these a plurality of second rounds, produces a black plug picture (step 530) in order to activation image display module (perhaps wherein interlock circuit), and makes the image display module show a black picture.
In this embodiment, first mode of operation in external modulation source and second mode of operation and aforesaid embodiment are similar, and first mode of operation is defined as to be opened or first brightness, and second mode of operation is defined as closes or second brightness.And the definition of first mode of operation in first mode of operation of backlight module and second mode of operation and external modulation source and second mode of operation is similar; First mode of operation is defined as to be opened or first brightness, and second mode of operation is defined as closes or second brightness.
And after the control module 130 generations second lamp source control signal; Just send the second lamp source control signal to ambient light source 200 (step 511), so that ambient light source 200 responds the second lamp source control signals and operates in second mode of operation (closed condition) or second brightness (step 512) with wired or wireless mode.Likewise, after control module 130 produces the first backlight module control signal, then send backlight module (step 513) to, operate in first mode of operation (unlatching) or first brightness (step 514) so that backlight module responds the first backlight module control signal.Though what specify is here the step that transmits to be described with step 511 and step 513, is not in order to limit the sequencing of its transmission.
Likewise; After control module 130 produces the first lamp source control signal; Just send the first lamp source control signal to ambient light source 200 (step 521), so that ambient light source 200 operates in first mode of operation (opening) or first brightness (step 522) with wired or wireless mode.Likewise; After control module 130 produces the second backlight module control signal; Then send backlight module (step 523) to, operate in second mode of operation (closed condition) or second brightness (step 524) so that backlight module responds the second backlight module control signal.
With reference to figure 7 are the enforcement aspects for the embodiment of Fig. 6.In the period 1 (odd cycle T1, T3), ambient light source 200 is to operate in second mode of operation, also is closed condition; Backlight module is to operate in first mode of operation, also is opening, in second round (even cycle T2, T4); Ambient light source 200 operates in first mode of operation; Also promptly open, backlight module is to operate in second mode of operation, also promptly closes.In addition, in second round (even cycle T2, T4), the image display module can produce a black plug picture.Certain mode of operation here also class is desired in mode of operation previously discussed.
In this embodiment, display backlight is opened and close synchronously or reduce the external modulation source when showing general picture, and the dark portion of general picture received lower external modulation source and influenced this moment, so can present preferable contrast display effect.When showing the black plug picture, to close backlight and open the external modulation source synchronously, be the black plug picture this moment, the demand of the bright dark contrast of no picture, so this embodiment is fit to like the user that shows that correlative value is high very much.
But the display device in the synchro control external modulation source that the present invention proposes, the periodic switch that can provide synchronizing signal to control the external modulation source module through wireless or wired transmission receiving trap reach the purpose that improves correlative value or reduce reflection.
But the display in the synchro control external modulation source that the present invention proposes; Using backlight closing under the situation that cooperates black insertion technology; Control module can provide synchronizing signal to control the periodic switch of external modulation source module through wireless or wired transmission receiving trap, makes switch and backlight module switch or the black plug picture synchronization of external modulation source module or reverse sync reach the purpose that improves correlative value or reduce reflection.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (19)
1. but the display device in a synchro control external modulation source is characterized in that, includes:
One image display module is in order to show a multimedia image;
One control module; Be electrically connected at this image display module; This control module response one synchronous signal is to produce one first lamp source control signal or one second lamp source control signal; Wherein this synchronizing signal produced during a plurality of period 1 that replace and a plurality of second rounds, and when those period 1, this control module produces this first lamp source control signal respectively and comes from operation under one first mode of operation to control an external modulation; When those second rounds, this control module produces this second lamp source control signal respectively and comes from operation under one second mode of operation to control this external modulation; And
One signal transmission module electrically connects this control module and in order to transmit this first lamp source control signal and/or this second lamp source control signal.
2. but the display device in synchro control external modulation according to claim 1 source is characterized in that this first mode of operation is the opening in this external modulation source, and this second mode of operation is the closed condition in this external modulation source.
3. but the display device in synchro control external modulation according to claim 1 source is characterized in that, this external modulation comes from and shows one first brightness under this first mode of operation, under this second mode of operation, shows one second brightness.
4. but the display device in synchro control external modulation according to claim 1 source; It is characterized in that; Also include a backlight module; This backlight module operates in one first mode of operation or response one second backlight module control signal and operate in one second mode of operation during those second rounds in response one first backlight module control signal during those period 1; Wherein this first backlight module control signal is to be produced in those period 1 by this control module, and this second backlight module control signal is to be produced those second rounds by this control module.
5. but the display device in synchro control external modulation according to claim 1 source; It is characterized in that; Also include a backlight module; This backlight module operates in one second mode of operation or response one first backlight module control signal and operate in one first mode of operation during those second rounds in response one second backlight module control signal during those period 1; Wherein this second backlight module control signal is to be produced in those period 1 by this control module, and this first backlight module control signal is to be produced those second rounds by this control module.
6. but according to the display device in claim 2 or 3 described synchro control external modulation sources, it is characterized in that this first mode of operation is the opening of this backlight module, this second mode of operation is the closed condition of this backlight module.
7. but according to the display device in claim 2 or 3 described synchro control external modulation sources, it is characterized in that this backlight module shows one first brightness under this first mode of operation, under this second mode of operation, show one second brightness.
8. but the display device in synchro control external modulation according to claim 1 source is characterized in that, this control module responds these a plurality of second rounds to produce a black plug picture, so that this image display module shows a black picture.
9. but the display device in synchro control external modulation according to claim 1 source is characterized in that, this signal transmission module for wirelessly or wiredly transmit this first lamp source control signal, this second lamp source controls signal to this external modulation source.
10. the control method in an external modulation source, this includes:
One synchronous signal periodically is provided, and this synchronizing signal produced during a plurality of period 1 that replace and a plurality of second rounds;
When this a plurality of period 1, produce one first lamp source control signal respectively, this first control signal comes from operation under one first mode of operation in order to control an external modulation;
Transmit this first lamp source and control signal to this external modulation source;
When this a plurality of second round, produce one second lamp source control signal respectively, this second control signal comes from operation under one second mode of operation in order to control this external modulation; And
Transmit this second lamp source and control signal to this external modulation source.
11. the control method in external modulation according to claim 10 source is characterized in that, this first mode of operation is the opening in this external modulation source, and this second mode of operation is the closed condition in this external modulation source.
12. the control method in external modulation according to claim 10 source is characterized in that, this external modulation comes from and shows one first brightness under this first mode of operation, under this second mode of operation, shows one second brightness.
13. the control method in external modulation according to claim 10 source is characterized in that, also includes:
Respond those period 1 to produce one first backlight module control signal respectively, this first backlight module control signal operates in one first mode of operation in order to control a backlight module;
Respond those second rounds to produce one second backlight module control signal respectively, this second backlight module control signal operates in one second mode of operation in order to control a backlight module;
Respond those second rounds to produce a black plug picture.
14. the control method in external modulation according to claim 13 source is characterized in that, this first mode of operation is the opening in this external modulation source, and this second mode of operation is the closed condition in this external modulation source.
15. the control method in external modulation according to claim 13 source is characterized in that, this external modulation comes from and shows one first brightness under this first mode of operation, under this second mode of operation, shows one second brightness.
16. the control method in external modulation according to claim 10 source is characterized in that, also includes:
Respond those period 1 to produce one second backlight module control signal respectively, this second backlight module control signal operates in one second mode of operation in order to control a backlight module;
Respond those second rounds to produce one first backlight module control signal respectively, this first backlight module control signal operates in one first mode of operation in order to control a backlight module; And
Respond those second rounds to produce a black plug picture.
17. the control method in external modulation according to claim 16 source is characterized in that, this first mode of operation is the opening in this external modulation source, and this second mode of operation is the closed condition in this external modulation source.
18. the control method in external modulation according to claim 16 source is characterized in that, this external modulation comes from and shows one first brightness under this first mode of operation, under this second mode of operation, shows one second brightness.
19. the control method in external modulation according to claim 10 source is characterized in that, this first lamp source control signal, the second lamp source control signal are for wirelessly or wiredly being sent to this external modulation source.
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| TWI514199B (en) * | 2014-02-26 | 2015-12-21 | Gunitech Corp | Method for controlling light source and computer program product thereof |
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