CN101572072A - Image display device and power-saving control method thereof - Google Patents
Image display device and power-saving control method thereof Download PDFInfo
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- CN101572072A CN101572072A CNA2008100887096A CN200810088709A CN101572072A CN 101572072 A CN101572072 A CN 101572072A CN A2008100887096 A CNA2008100887096 A CN A2008100887096A CN 200810088709 A CN200810088709 A CN 200810088709A CN 101572072 A CN101572072 A CN 101572072A
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Abstract
The invention discloses an image display device and a power-saving control method thereof. The image display device comprises a signal input module, a display module, a light-emitting module and a control module, wherein the signal input module is used for receiving an image signal; the display module is used for displaying an image according to the image signal; the light-emitting module is provided with a plurality of light sources and used for providing rays of the display module; and the control module selectively lightens or turns off the part of light sources according to the property of the image signal and enters the power-saving mode, therefore, the invention can achieve the efficacy of prolonging the service life of a backlight source and saving the power consumption of the display device.
Description
Technical field
The present invention relates to image display device and electricity-saving control method thereof, particularly can be according to the image display device and the electricity-saving control method thereof of the part light source of image display area closing image display device.
Background technology
Because the environmental protection subject under discussion is more and more paid attention to, therefore how allowing electronic installation can save power consumption is the technical field of being noted most at present.At present existing many technology are not still almost effectively economized electric energy in order to save the power consumption of computing machine on traditional display device, can only rely on user's manual-lock screen when not using.But close screen if the user neglected when leaving, then screen can continue to show and consumed power.
The present automatic arbitration functions relevant with screen; screen saver function only; when the user does not have the operational computations machine in a period of time; then for protect screen avoid because of show identical image cross cause for a long time aging; computing machine can be carried out screen protection program; some screen protection program can allow the zones of different of screen take turns display image, and other zone shows black.In addition, United States Patent (USP) 20080036753, different renewal frequencies is used in its effective coverage and non-effective coverage for image display device, and wherein the renewal frequency of non-effective coverage is lower than the effective coverage, reduces the power consumption of image display device with this.Yet, in above-mentioned prior art, only be the power consumption that reduces display panel, and backlight module remain at the state of lighting, very limited for the power consumption that reduces image display device.
In the prior art, as TaiWan, China patent 00400972 or TaiWan, China patent 00411700, it discloses sets up interruptible sensor or video camera on image display device, judge with light processing mode or Flame Image Process mode whether image display device the place ahead has the user, if there is not the user, then image display device shuts down automatically, reaches less electricity consumption with this.But these prior aries need the extra device that increases on image display device, and this measure also increases the cost of image display device.
In addition, at present flat type image display device is very general, and the shared volume of this flat type image display device is less and can hang on the wall, and therefore when not using, image display device also is supposed to provide decoration functions or shows simple information.
Summary of the invention
The object of the present invention is to provide a kind of image display device and electricity-saving control method thereof, reach serviceable life that prolongs backlight and the effect of saving display device power consumption to take into account.
To achieve these goals, according to image display device provided by the present invention, comprise: signal input module is used to receive picture signal; Display module, be used for according to the picture signal display image; Light emitting module, it has a plurality of light sources, is used to provide display module light; And control module, its characteristic selectivity according to picture signal is lighted or the described light source of closed portion, to enter battery saving mode.
Wherein, the characteristic of described picture signal comprises the ratio of width to height of effective coverage (active area) or picture signal is detected no significant change in the Preset Time section feature.
Wherein, described control module determines the position of at least one non-effective coverage according to the ratio of width to height of effective coverage, and closes the light source of corresponding non-effective coverage.
In addition, to achieve these goals, according to electricity-saving control method provided by the present invention, be used to have the image display device of a plurality of light sources, this electricity-saving control method comprises:
I) described image display device receives picture signal; And
Ii) light or the described light source of closed portion according to the characteristic selectivity of described picture signal, with control chart as display device entering electricity-saving mode.
Wherein, the characteristic of described picture signal comprises the ratio of width to height of effective coverage (active area) or picture signal is detected no significant change in the Preset Time section feature.
Wherein, described electricity-saving control method also comprises the position that determines at least one non-effective coverage according to the ratio of width to height of effective coverage, and closes the light source of corresponding non-effective coverage.
Image display device of the present invention as mentioned above and electricity-saving control method thereof have the following advantages:
(1) this image display device and electricity-saving control method thereof can be issued to less electricity consumption in the prerequisite that does not influence user's viewing quality according to the characteristic closed portion light source of display image.
(2) this image display device can initiatively carry out electricity-saving mechanism, does not need to be driven or controlled by computing machine, can allow the more effectively amount of saving energy of image display device.
(3) this image display device can provide decoration functions and show essential information under battery saving mode, can improve the surcharge of image display device.
Description of drawings
Fig. 1 is an embodiment synoptic diagram of image display device of the present invention;
Fig. 2 uses synoptic diagram for an embodiment of image display device of the present invention;
Fig. 3 is another embodiment synoptic diagram of image display device of the present invention;
Fig. 4 uses synoptic diagram for the another embodiment of image display device of the present invention;
Fig. 5 uses synoptic diagram for the another embodiment of image display device of the present invention;
Fig. 6 uses synoptic diagram for the another embodiment of image display device of the present invention;
Fig. 7 is an embodiment flow chart of steps of electricity-saving control method of the present invention; And
Fig. 8 is another embodiment flow chart of steps of electricity-saving control method of the present invention.
* symbol description *
1,3,6: image display device; 11: signal input module;
111: picture signal; 12: display module;
121,321,431,432,521: the effective coverage;
122,322,433,434,522: non-effective coverage;
131～138,331～336,631～634: fluorescent tube;
14: control module; 141: controller;
142: switch; 591: default picture;
592: presupposed information; The 68:LED module;
71～74,81～85: steps flow chart.
Embodiment
Below, describe the embodiment of image display device of the present invention and electricity-saving control method thereof in detail with reference to accompanying drawing.Be convenient to understand for making, same components indicates with same-sign and illustrates among the following embodiment.
Fig. 1 is an embodiment synoptic diagram of image display device of the present invention.As shown in Figure 1, image display device 1 comprises signal input module 11, display module 12, light emitting module (not shown) and control module 14.Described signal input module 11 is used to receive picture signal 111, for example from the picture signal of computing machine, or from TV signal of TV set-top box or the like.And signal input module 11 can comprise the joint of multiple signaling interface, for example VGA joint, AV terminal or DVI joint or the like.
Light emitting module is in order to provide display module 12 light, and display module 12 provides the viewing area and according to picture signal 111 display image on the viewing area, for example display module 12 can be liquid crystal panel module, it comprises a plurality of pixels and forms the viewing area in the arranged mode, do corresponding variation respectively according to picture signal 111 these pixels of control again, cooperate light emitting module to produce light again, allow the beholder can see the image that these pixels are made up with this.And light emitting module has a plurality of light sources, the part of the corresponding display module of each light source 12 viewing areas.Light source can be in fluorescent tube, the led module one or both and mixes use.In Fig. 1, light emitting module comprises 8 fluorescent tubes 131～138, and it is with eight zones from top to bottom, the corresponding viewing area of transversely arranged difference.
Light source is lighted or closed to control module 14 in order to the characteristic selectivity according to picture signal 111.Control module 14 can comprise controller 141 and a plurality of switch 142, switch 142 can be arranged at the high pressure side (as shown in Figure 1) of transformer or low pressure side (being with respect to the opposite side of high pressure side on the transformer) or transformer two side ends or be arranged at the light source earth terminal, all can reach the effect that the control light source opens and closes.Fluorescent tube is lighted or closed to the state of controller 141 gauge tap 142.In one embodiment, as shown in Figure 2, the ratio of width to height of the display module 12 whole viewing areas of image display device 1 is 4: 3 o'clock, if the user is set at 16: 9 with the ratio of width to height of watching effective coverage 121, for example watch the DVD film, then the both sides up and down of viewing area are non-effective coverage 122, can display image on this non-effective coverage 122, therefore control module 14 just the may command fluorescent tube 131 and 138 that is positioned at non-effective coverage 122 close, thus control module 14 just may command fluorescent tube 131 and 138 close, only light fluorescent tube 132～137, up to the user the ratio of width to height of watching effective coverage (active area) is set at 4: 3, control module 14 is just lighted fluorescent tube 131 and 138.With this, during the image of user in watching effective coverage 121, can save the power consumption of fluorescent tube 131 and 138, in the present embodiment, can allow light emitting module save 25% power consumption.
In another embodiment, as shown in Figure 3, the light emitting module of image display device 3 comprises 20 fluorescent tubes of vertical arrangement and the ratio of width to height of display module 12 whole viewing areas is 16: 9 o'clock, if the user is set at 4: 3 with the ratio of width to height of watching effective coverage 321, for example watch VCD or general TV, then zone, the left and right sides of viewing area is non-effective coverage 322, this non-effective coverage 322 can display image, therefore control module 14 just the may command fluorescent tube 331～333 and the fluorescent tube 334～336 that are positioned at non-effective coverage 322 close, only light other 14 fluorescent tubes, up to the user the ratio of width to height of watching effective coverage 321 is set at 16: 9, control module 14 is just lighted fluorescent tube 331～333 and fluorescent tube 334～336.With this, during the image of user in watching effective coverage 321, can save the power consumption of 6 fluorescent tubes, in this embodiment, can allow light emitting module save 30% power consumption.
Wherein, the user can use a teleswitch, button on the image display device, or the operational computations machine is initiatively set the ratio of width to height of display module effective coverage, can be set at widescreen mode when for example watching DVD, the ratio of width to height of its effective coverage is 16: 9, can be set at the conventional screen pattern when watching VCD or general TV, the ratio of width to height of its effective coverage is 4: 3, control module 14 can receive these setting signals and close corresponding fluorescent tube according to setting signal again, but or also the ratio of width to height of 111 li effective coverages of active detecting picture signal of control module 14, close corresponding fluorescent tube according to detected the ratio of width to height again, for example control module 14 can be judged the ratio of width to height of effective coverage according to the image resolution ratio of picture signal 111.In addition, as shown in Figure 4, if image display device uses as digital frame or billboard, and dividing into a plurality of effective coverages 431 and 432 with the viewing area, the user Shows Picture, then control module 14 can be closed fluorescent tube according to the position of non-effective coverage 433 and 434, and control module 14 also can change and dynamically control the switching of all fluorescent tubes along with the position of non-effective coverage or size, to reach less electricity consumption.
In another embodiment, as shown in Figure 5, when control module 14 detects institute's received image signal 111 in a period of time during no significant change, if picture signal 111 is the picture signal 111 from computing machine, represent that promptly the user is not at the operational computations machine, if picture signal 111 is a TV signal, i.e. expression is no normal tv signal at present, then control module 14 begins to carry out battery saving mode, the control light source is lighted in turn and is closed, only allow the part display image of display module viewing area, for example image is originally dwindled, only be presented at the first half or the Lower Half of display device.Perhaps, image display device also can show out of Memory, as time, date and default picture or the like.So, image display device also can provide decoration functions and show essential information under battery saving mode.
In Fig. 5, present embodiment with image display device 1 shown in Figure 1 as an example, when control module 14 begins to carry out electricity-saving mechanism, control module 14 is closed fluorescent tube 133～138 and is made 522 deepenings of non-effective coverage, and only light fluorescent tube 131 and 132 to illuminate effective coverage 521, and on effective coverage 521, show default picture 591 and time, date and climatic information 592, can save the power consumption of 6 fluorescent tubes successively.Image display device 1 as Fig. 5 below is illustrated used of a specified duration and accelerated deterioration for fear of fluorescent tube, just control module 14 is closed fluorescent tube 131 and 132 and light fluorescent tube 133～135 behind Preset Time, and the position of the effective coverage 521 of change display message.Then, control module 14 is closed fluorescent tube 133～135 again and is lighted fluorescent tube 136～138 behind Preset Time, and changes the position of the effective coverage 521 of display message.Close and put bright light source so in turn, can take into account display message and reduce power consumption, and further can prolong the serviceable life of light source.And also can comprising storage element, control module 14 stores these information 592 and picture 591.
Previous embodiment is compared with the display device of prior art, but whether the display device active detecting of previous embodiment should start electricity-saving mechanism, rather than control by computing machine, also need not to set up again interruptible sensor or video camera and judge that whether the user is still at the operational computations machine.
In addition, the foregoing description with the fluorescent tube be light source as an example, yet light emitting module can comprise fluorescent tube and led module.With reference to Fig. 6, the synoptic diagram of the embodiment when it uses hybrid light source for image display device of the present invention.Among the figure, image display device 6 is that with the difference of previous embodiment light emitting module comprises a plurality of fluorescent tubes 631～634 and at least one led module 68.When image display device 6 display images, control module 14 is lighted fluorescent tube 631～634 and is closed led module 68.When image display device 6 begins to enter battery saving mode, for example detecting image does not have significant change or user and pushes programmable button or receive power saving trigger pip that computing machine transmits or the like in a period of time, just close fluorescent tube 631～634 and light led module 68, and on the viewing area of corresponding led module 68 demonstration time, date and default picture, be illustrated in the image display device of top as Fig. 5.Because the power consumption of led module 68 is low than fluorescent tube, so only use led module 68 information of showing date can reach less electricity consumption.
When image display device 1 is a televisor, picture signal 111 is during from the TV signal of TV set-top box, if can know in advance that the user can not watch the period of picture signal 111, just at this moment in the section closed portion light source by the picture deepening, to reach less electricity consumption.For example, if have listing in the picture signal 111, the TELTEXT of digital television signal for example, its record program time-interval and ad break, then control module 14 can open whole light sources the brightness that recovers script again at ad break closed portion light source by the picture deepening at program time-interval.With this, reduce the power consumption of light emitting module.
In addition, in the above-described embodiments, except the closed portion light source, also can reduce the drive current of other bright light source again, further reduce the brightness and the power consumption of image display device 1 with this.And by using closed portion light source and the means that reduce drive current, resolution is adjusted in the brightness that can increase image display device 1.For example, in the prior art, image display device is only adjusted drive current and is changed brightness, if the variable quantity of drive current has 100%, 80%, 60%, 40% and 20% etc. 5 kinds, the presentation video display device can show 5 kinds of brightness; If again in conjunction with the means of closed portion light source provided by the present invention, when image display device of the present invention had 10 fluorescent tubes, image display device then of the present invention can show 50 kinds of brightness, and it is high than prior art that resolution is adjusted in its brightness.
With reference to Fig. 7, it shows the synoptic diagram of the embodiment of electricity-saving control method of the present invention.Among the figure, the method is applied to have the image display device of a plurality of light sources, mixes use and light source can be in fluorescent tube, the led module one or both.In step 71, image display device receives picture signal, then in step 72, judges the ratio of width to height of effective coverage in picture signal, and determines the position and the size of non-effective coverage.For example, if the ratio of width to height of the whole viewing area of image display device is 4: 3, and the user is set at 16: 9 o'clock with the ratio of width to height of watching effective coverage, and then non-effective coverage is positioned at the both sides up and down of effective coverage.If the ratio of width to height of the whole viewing area of image display device is 16: 9, and the user is set at 4: 3 o'clock with the ratio of width to height of watching effective coverage, and then non-effective coverage is positioned at the left and right sides of effective coverage.Then in step 73, select the light source of corresponding non-effective coverage, for example in Fig. 2, the light source of corresponding non-effective coverage is fluorescent tube 131 and 138, and in Fig. 3, the light source of corresponding non-effective coverage is fluorescent tube 331～333 and fluorescent tube 334～336.At last, in step 74, close selected light source, image display device can be saved the power consumption that is closed light source like this, the impression in the time of can not influencing the user again and watch.
With reference to Fig. 8, it shows the synoptic diagram of another embodiment of electricity-saving control method of the present invention.Among the figure, the method is applied to have the image display device of a plurality of light sources, mixes use and light source can be in fluorescent tube, the led module one or both.In step 81, the power saving video data is provided, it can comprise date data, climatic data, time data and picture, picture 591 as shown in Figure 5 and information 592.In step 82, image display device receives picture signal, then in step 83, judge whether picture signal does not have significant change in a period of time, if no significant change, represent that present user is not watching image display device, then the closed portion light source and shows presupposed information in the viewing area of corresponding point bright light source entering battery saving mode in step 84.At last,, just change a bright light source and show the zone of presupposed information, as shown in Figure 5, close light source and some bright light source in turn, can effectively reduce the power consumption of image display device, and prolong the serviceable life of light source every preset period of time in step 85.
In addition, if above-mentioned a plurality of light sources comprise a plurality of fluorescent tubes and at least one led module, then in step 84, when entering battery saving mode, close the higher fluorescent tube of power consumption, and light the lower led module of power consumption, and presupposed information is presented at the pairing viewing area of led module.
The above only is an illustrative, and non-limiting.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the scope of claims its equivalent modifications of carrying out or change.
Claims (18)
1, a kind of image display device, it comprises:
Signal input module is used to receive picture signal;
Display module is used for according to described picture signal display image;
Light emitting module, it has a plurality of light sources, is used to provide described display module light; And
Control module is used for lighting or the described light source of closed portion according to the characteristic selectivity of described picture signal, to enter battery saving mode.
2, image display device according to claim 1 is characterized in that described light source is or both combination in fluorescent tube, the led module.
3, image display device according to claim 1 is characterized in that the characteristic of described picture signal comprises the ratio of width to height of effective coverage.
4, image display device according to claim 3 is characterized in that described control module determines the position of at least one non-effective coverage according to the ratio of width to height of described effective coverage, and closes light source that should non-effective coverage.
5, image display device according to claim 1 is characterized in that described control module receives trigger pip, and controls described image display device according to this trigger pip and enter described battery saving mode.
6, image display device according to claim 5 it is characterized in that described image display device comprises remote controller or key groups, and described trigger pip is produced by described telepilot, described key groups or external electronic.
7, image display device according to claim 1 is characterized in that the characteristic of described picture signal comprises described picture signal is detected no significant change in the Preset Time section feature.
8, image display device according to claim 7 is characterized in that the described light source of described control module closed portion, and shows presupposed information at corresponding these on by the viewing area of a bright light source.
9, image display device according to claim 8 is characterized in that described control module closes or light described light source in turn.
10, a kind of electricity-saving control method is used to have the image display device of a plurality of light sources, and this electricity-saving control method comprises:
I) described image display device receives picture signal; And
Ii) light or the described light source of closed portion, enter battery saving mode to control described image display device according to the characteristic selectivity of described picture signal.
11, electricity-saving control method according to claim 10 is characterized in that described light source is or both combination in fluorescent tube, the led module.
12, electricity-saving control method according to claim 10 is characterized in that the characteristic of described picture signal comprises the ratio of width to height of effective coverage.
13, electricity-saving control method according to claim 12 is characterized in that also comprising the position that determines at least one non-effective coverage according to the ratio of width to height of described effective coverage, and closes light source that should non-effective coverage.
14, electricity-saving control method according to claim 10 is characterized in that also comprising the reception trigger pip, and controls described image display device according to this trigger pip and enter described battery saving mode.
15, electricity-saving control method according to claim 14 is characterized in that described trigger pip is produced by telepilot or the key groups that described image display device comprised, or is produced by external electronic.
16, electricity-saving control method according to claim 10 is characterized in that the characteristic of described picture signal comprises described picture signal is detected no significant change in the Preset Time section feature.
17, electricity-saving control method according to claim 16 is characterized in that also comprising the described light source of closed portion, and shows presupposed information at corresponding these on by the viewing area of a bright light source.
18, electricity-saving control method according to claim 17 is characterized in that also comprising and closes or light described light source in turn.
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