CN100483504C - Video display device - Google Patents
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- CN100483504C CN100483504C CNB2005800342328A CN200580034232A CN100483504C CN 100483504 C CN100483504 C CN 100483504C CN B2005800342328 A CNB2005800342328 A CN B2005800342328A CN 200580034232 A CN200580034232 A CN 200580034232A CN 100483504 C CN100483504 C CN 100483504C
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Abstract
Information on an emergent warning is received to decide whether or not it is in an emergent warning state, on the basis of that information. A display power mode is determined on the basis of the selection of a viewer, in case the warning state is not emergent, but is displayed as it is as the original video information by omitting or modifying a portion of the video information, in the case of the emergent warning state. The power mode is automatically switched to an ultra-low consumption mode, in which the consumed power is reduced. In case a disaster such as an earthquake occur so that the state is to reduce the consumed power, the screen display is automatically lowered in the minimum state capable of acquiring the information, so that the consumed power of the video display can be minimized.
Description
Technical field
The present invention relates to cut down the video display devices of the power that picture shows.
Background technology
General is that the video display devices of representative can provide a large amount of information with the method that so-called picture shows is instantaneous with the television receiver.But because picture show to need big power, so compare with the radio receiver of output sound only etc., its power consumption is big.Therefore a kind of video display devices that possesses the function of the power consumption in the time of reducing audiovisual had been proposed in the past.
The spy opens to disclose in the 2000-10068 communique a kind ofly to be possessed to cut down the example of prior art of video display devices that power consumption is the function of purpose.Propose a kind ofly to adjust the display brightness of video automatically, thereby cut down power consumption and the display device of the display quality of the best is provided according to lightness around detected with the mechanism of detecting outer light quantity.
And then, open the spy and to disclose a kind of display device in the 2003-345297 communique, it is by according to moving towards to reduce brightness from picture mediad picture periphery, and then will reduce characteristic in the brightness that the picture periphery has a constant zone of brightness value and incoming video signal multiplies each other, thereby make brightness not have the mode of inharmonious sense to reduce brightness, to reduce power consumption with original relatively video.
Have, open in the clear 56-24880 communique the spy and proposed a kind of control device, it is the voltage of circuit by changing deflection in the display device of cathode-ray tube (CRT), changes the size of picture, thereby reduces the power consumption of receiver.
And, real opening in the clear 62-30482 communique a kind of display device having been proposed, it is by showing 1 look in red bluish-green three kinds of color signals or the color signal of 2 looks, thereby reduces power consumption.
Also have, the television receiver that a kind of prior art relates to is disclosed in the Te Kaiping 11-196342 communique, it is each when receiving emergency alarm broadcasting, and the power consumption when cutting down the standby of receiving terminal of digital television broadcasting is even and also can receive emergency alarm broadcasting when standby.
Utilize Figure 16, the prior art is described.Figure 16 is the block diagram of the formation of the video display devices that relates to of expression prior art.Among Figure 16, generate in the carrying device 901, be provided with the method beyond the broadcast routes such as satellite ripple and directly notify the program change or the initiating signal unloading part 913 of urgent broadcast etc. is arranged at the programme information of digital television broadcastings such as satellite broadcasting.The initiating signal input part 924 of accepting this notice is set in receiving terminal 902.According to initiating signal, via power control section 925 starting input parts 921.Input part 921 monitors the information of being imported, and receives the modification information or the urgent broadcast of the program in the reservation.If there is the content that should upgrade in the programme information that has been recorded in the programme information storage part 923, then upgrade this information.If obtaining and upgrade end of information needed then stops to supply with to the electric power of input part.If have the information of notice urgent broadcast, then begin the urgent broadcast content to be presented on the display device to the display part supply capability.Like this, cut down the power consumption of terminal, and corresponding with displaying predetermined programme change constantly etc., carry out the automatic renewal of terminal program etc.
Video display devices such as television receiver are owing to can and providing a lot of information instantaneous by the picture demonstration, so exploit one's power as information gathering mechanism when disasters such as earthquake or typhoon take place.Yet the supply that electric power etc. is arranged when disaster takes place is cut may.In this case, promptly use power supply if possess self power generation system etc., then electrical equipment can use, but requires power saving more with comparing usually.Perhaps, even be not cut off in the supply of disaster site electric power, owing to supply with instability, so in this region strong request economize on electricity.
But it is the reduction power consumption of purpose that above-mentioned prior art provides the mode display video that can not reduce than common audiovisual state substantially with image quality.That is to say and since on earth usually the visual identity down of audiovisual state all be to be reduced to purpose with the power consumption under the state of the level of guaranteeing to appreciate program, so desired mandatory and significantly power reduction when not wishing urgent disaster.Therefore, when electric power is cut off when urgent disaster such as earthquake takes place, in house or facility, consumed store power in advance, be difficult to fully guarantee to carry out the time of information gathering with self power generation system such as solar cell.
Have again, the video display devices that prior art relates to can receive emergency alarm broadcasting, even it is useful aspect information gathering, but the related power conservation techniques of this technology only rests on the power aspect of cutting down holding state, and the power reduction aspect in the information gathering can't be applied to urgent disaster and take place the time.
Summary of the invention
In order to solve above-mentioned problem, video display devices of the present invention comprises: show the power mode selection portion, its output is based on the indicator signal of the demonstration power mode of the selection behavior of looking the hearer; The emergency alarm judging part, it has the mechanism that receives the information relevant with emergency alarm and be judged as the emergency alarm state according to this information; Show the power mode judging part, it accepts to show the output signal of power mode selection portion and emergency alarm judging part, under the situation that is not the emergency alarm state, determine to show power mode according to the output that shows the power mode selection portion, under the situation of emergency alarm state, send indication to display control unit, make by irrespectively switching to the super low consumption power mode with the output that shows the power mode selection portion, the part of this super low consumption power mode vacancy or change video information, thus be in a ratio of the pattern that reduces power consumption with the former video information of direct demonstration; Display part, its display video; And display control unit, it controls display part, makes to show with the demonstration power mode based on the indicator signal that shows the power judging part, is used for the control that vision signal is shown as practical video; Described super low consumption power mode reduces power consumption by described display control unit according to video information being changed into monochrome and being made in monochromatic and the black color of little power consumption account for picture mode over half.
Video display devices of the present invention according to above-mentioned such formation, in that taking place, disaster such as earthquake becomes under the situation of the emergency alarm state that should reduce power consumption, picture is shown be reduced to automatically till the MIN state of the information that can obtain, the power consumption that video shows can be suppressed to Min..According to the present invention, even a kind of video display devices that also can guarantee information gathering when urgent disaster for a long time can be provided.
Description of drawings
Fig. 1 is the block diagram of formation of the video display devices of expression embodiments of the present invention 1.
Fig. 2 A is the figure of the example that shows of the super low consumption power mode of expression embodiments of the present invention 1.
Fig. 2 B is the figure of the example that shows of the super low consumption power mode of expression embodiments of the present invention 1.
Fig. 3 A is the figure of another example of the super low consumption power mode of expression embodiments of the present invention 1.
Fig. 3 B is the figure of another example of the super low consumption power mode of expression embodiments of the present invention 1.
Fig. 4 A is the figure of another example of the super low consumption power mode of expression embodiments of the present invention 1.
Fig. 4 B is the figure of another example of the super low consumption power mode of expression embodiments of the present invention 1.
Fig. 5 is the figure that the super low consumption power mode of expression embodiments of the present invention 1 is selected an example of picture.
Fig. 6 is the block diagram of formation of the video display devices of expression embodiments of the present invention 2.
Fig. 7 A is the figure of the example that shows of the super low consumption power mode of expression embodiments of the present invention 2.
Fig. 7 B is the figure of the example that shows of the super low consumption power mode of expression embodiments of the present invention 2.
Fig. 8 is the block diagram of formation of the video display devices of expression embodiments of the present invention 3.
Fig. 9 is the cut-open view of formation of the display part of expression embodiments of the present invention 4.
Figure 10 is the figure of an example of control of the super low consumption power mode of expression embodiments of the present invention 4.
Figure 11 is the figure of an example of the super low consumption power mode of expression embodiments of the present invention 4.
Figure 12 is the figure of an example of the super low consumption power mode of expression embodiments of the present invention 4.
Figure 13 is the block diagram of formation of the video display devices of expression embodiments of the present invention 5.
Figure 14 is the block diagram of formation of the video display devices of expression embodiments of the present invention 6.
Figure 15 is the circuit diagram of an example of formation of the power failure test section of expression embodiments of the present invention 6.
Figure 16 is the block diagram of the formation of the video display devices that relates to of expression prior art.
Among the figure: 101,201,301,501,601-video display devices, 102-television antenna, 103-tuner/demodulation section, 104-TS code translator, 105-MPEG code translator, 106,206-display control unit, 107-display part, 108-captions extraction unit, 109-additional information extraction unit, 110-emergency alarm analysis portion, 111,311-demonstration power mode judging part, 112,612-demonstration power mode selection portion, 113-emergency alarm acceptance division, 115,315,515,615-emergency alarm judging part, 131a, 131b-indication range, 132-telop, 143-backlight, 144-light guide plate, 145-small-sized backlight, 146-diffuser plate, 147-liquid crystal panel, 148-framework, 157-light-storing material, 161-promptly use supply unit, 162-power failure test section, 163-promptly use power supply action notice portion, 164-source power supply, 165-power failure test section, 166-promptly use power supply motion detection portion, 171-bistable multivibrator, 176-CR integrating circuit.
Embodiment
(embodiment 1)
With reference to accompanying drawing, the embodiment 1 of video display devices of the present invention is described.
Fig. 1 is the block diagram of the formation of expression embodiments of the present invention 1.In the present embodiment, be envisioned for the video display devices (digital television receiver) of receiving digital broadcast.In addition, as video display devices of the present invention, so long as it is just passable to possess the mechanism of the mechanism of the video information of obtaining and display video information, for example have numeral of receiving or simulation satellite broadcasting, terrestrial broadcasting television receiver or receive electrophone CATV or by networks such as the Internet wire obtain information and can be on picture the personal computer etc. of display message.
In Fig. 1, television antenna 102 receiving digital broadcasts.The signal transformation that tuner/demodulation section 103 will receive with television antenna 102 is transport stream (below be designated as " TS ").104 couples of TS from 103 outputs of tuner/demodulation section of TS code translator decipher the back as video or sound stream output.105 pairs of video flowings from TS code translator 104 of MPEG code translator carry out MPEG decoding.Display control unit 106 control display parts 107 carry out video flowing is shown as the control of practical video.
Additional information extraction unit 109 is extracted the information beyond the stream of video such as additional information in the TS or control information or sound.Emergency alarm analysis portion 110 judges whether to have sent emergency alarm broadcasting such as disaster generation from the additional information that is extracted.In present embodiment 1, constitute emergency alarm judging part 115 by additional information extraction unit 109 and emergency alarm analysis portion 110, it receives the information relevant with emergency alarm, and is judged as the emergency alarm state according to this information.Show the indicator signal of power mode selection portion 112 outputs based on the demonstration power mode of the selection behavior of looking the hearer.Demonstration power mode judging part 111 is determined to show power mode according to the output signal of emergency alarm analysis portion 110 or demonstration power mode selection portion 112, and is sent indication to display control unit 106.
Have again, in the video display devices 101 of present embodiment 1,, following three kinds of patterns are arranged as showing power mode.First is the common power mode that consumes common power in common picture shows; Second is to reduce power consumption by reducing feasible the hanging down than common power mode of brightness, but can not be short of the energy-saving mode of image information or change image information; The 3rd is the super low consumption power mode than the further reduction power consumption of energy-saving mode.Particularly, so-called super low consumption power mode is the part by shortcoming or change video information, thereby shows that relatively directly former video information reduces the pattern of power consumption.In addition, in this super low consumption power mode, do not comprise the method that the merely only whole display brightness that reduces video equably reduces power consumption.
Action to the video display devices that the present invention relates to 101 of above such formation describes below.
Usually, look the hearer by showing that power mode selection portion 112 is set at common power mode or energy-saving mode is come audiovisual material.Under this situation, display control unit 106 is accepted the indicator signal from the demonstration power mode that shows power mode judging part 111 based on the selection result that shows power mode selection portion 112, if selected common power mode, then be controlled to be the data that do not change the video flowing after the decoding, and display part 107 carries out video with common brightness and shows.Under the situation of having selected energy-saving mode, be controlled to be the data that do not change the video flowing after the decoding equally, but carrying out video with the brightness lower than common brightness, display part 107 shows.Under these situations, though the different brightness existence height that make of hobby because of looking the hearer can be appreciated under the intact state of video of the program that keeps sending here from the broadcasting station.
Then, imagination generation such as disaster is also sent the situation of emergency alarm from the broadcasting station, the action of video display devices 101 of the present invention is described.
At first the information among the TS that is multiplexed into MPEG is described.Except the data of video or sound, caption information, digital broadcasting etc. to looking the information that the hearer provides, as control information multiplexed PSI (Program Specific Information), carry out program as the user and select the interface message of usefulness and multiplexed SI (Service Information).The information that PSI comprised is reduced various forms, and the PMT (Program Map Table) that describes the information that constitutes the ingredient (component) that is contained in the programme in the TS is wherein arranged, and as the information of describing arbitrarily, the emergence message descriptor is arranged at this.When the emergence message descriptor was broadcasted in the emergency alarm that earthquake takes place or it guards against declaration or seismic sea wave warning etc., the sign in the descriptor was defined as ON, has described the details relevant with emergency alarm such as area code or alert level.
For example imagine that video display devices 101 has received that earthquake produces and the sign of emergence message descriptor is changed to the situation of the digital broadcasting wave behind the ON.In Fig. 1, the digital broadcasting that is received by television antenna 102 is transformed to TS in tuner/demodulation section 103.104 couples of TS from 103 outputs of tuner/demodulation section of TS code translator decipher, as video or sound stream output.
At this, additional information extraction unit 109 is extracted video flowing or sound stream information in addition such as interior additional information of TS or control information, checks the emergence message descriptor in the PMT that is extracted.If the emergence message descriptor be masked as OFF, then represent not have the output of the meaning of emergence message.Under the situation that is masked as ON of emergence message descriptor, then extract the information of area code and alert level, represent current the be signal of the meaning in the emergency alarm broadcasting and the output of the information of the area code that is extracted, alert level.
Emergency alarm analysis portion 110 by additional information extraction unit 109 obtain whether be in the emergency alarm broadcasting signal, for emergency alarm broadcast in the time this area code and alert level information, judge whether to be the emergency alarm state.Be made as the state that might disaster take place and should limit power consumption in this application at this so-called emergency alarm state.
Specifically be if not in the emergency alarm broadcasting, then to be judged as and not to be the emergency alarm state.If in the emergency alarm broadcasting, then at first check area code.Store the area code in this video display devices 101 places of living in the emergency alarm analysis portion 110 in advance, this area code and the area code that is extracted are compared.The emergency alarm state is other regions under different situations, and being judged as this video display devices 101 residing places is not the emergency alarm state.Under the situation of two area code unanimities, judge that whether alert level is more than the grade of regulation, if more than the grade of regulation, then be judged as the emergency alarm state,, then be judged as and be not the emergency alarm state if below the grade of regulation.
Show that whether power mode judging part 111 is obtained by emergency alarm analysis portion 110 is the information of emergency alarm state, determines to show power mode.Under the situation that is not the emergency alarm state, be common state certainly, therefore determine according to the output that shows power mode selection portion 112 as mentioned above.But under the situation of emergency alarm state, will show irrespectively that with the output that shows power mode selection portion 112 power mode switches to the super low consumption power mode.
The demonstration example of the super low consumption power mode of present embodiment 1 then is described.
Be under the situation of plasm display device at display part 107 for example, area and intensity thereof with luminescence unit in video shows show variable power accordingly.Certain display area is more little or the luminescence unit number is few more, and then power consumption is few more, has luminous intensity low more again, and promptly Zheng Ti mean flow rate is low more, and power consumption is few more.
Fig. 2 A, Fig. 2 B are that one of the super low consumption power mode that relates to of embodiment of the present invention 1 shows example.The data conversion that at first will answer video signal displayed is a white and black displays.And the display area ratio of calculating white and black (having added the part of mesh lines), in occupying under the big situation of ratio of white by white and black are reversed, thereby can reduce white display area and show, compare with common audiovisual state and can cut down power consumption significantly.Also have, this moment, so for example luminescence unit only is made as green, then if luminous with monochrome, the luminescence unit number was 1/3, can further cut down power consumption significantly because display video is monochromatic.
Perhaps, shown in Fig. 3 A, Fig. 3 B, the following part of regulation brightness all turns to the black of minimum brightness, thereby the power consumption of the part below the regulation brightness disappears.And then,, thereby can further cut down power consumption significantly by the grey (having added the part of oblique line) that is made as the regulation brightness that sets for the part more than the regulation brightness.
Perhaps, shown in Fig. 4 A, Fig. 4 B, by being counted, demonstration is extracted as 1/2 or 1/3 at interval, or demonstration is counted be reduced to 1/2 or 1/3 by generating interpolation data, thereby the video indication range 131a of Fig. 4 A is reduced into the video indication range 131b of Fig. 4 B, can reduce light-emitting area thus, and reduce power consumption significantly.
More than the processing of the part of shortcoming or change video information is the processing that impairs original video information.Therefore, be not suitable in common video, appreciating program.Yet under the emergency alarm state from video information obtain various information aspect fully play effect.And reach with the former video information of direct demonstration and compare the effect that can reduce power consumption significantly.
In addition,, also can synthesize plural processing and be used as the super low consumption power mode, can further cut down power consumption significantly under this situation though the processing of above-mentioned super low consumption power mode can be set as function of the present invention separately respectively.
The function that realizes multiple super low consumption power mode perhaps also can be set, select by looking the hearer.This moment as shown in Figure 5, as selecting picture, become which kind of picture after the processing of a part of having carried out shortcoming or change video information, in fact prompting has changed the picture after the common broadcasting, and expression power consumption this moment becomes the ratio of which kind of degree with respect to common state.Also the hobby of looking the hearer can be reflected thus, and the ultralow power consumption under the emergency alarm state can be realized.
Have, the releasing of super low consumption power mode is by looking the hearer via showing that the demonstration power mode beyond the power mode selection portion 112 selection super low consumption power modes carries out again.That is to say, looking the hearer has selected under the situation of common power mode or energy-saving mode in showing power mode selection portion 112, selected demonstration power mode is communicated to and shows power mode judging part 111, passes on the indication that switches to this preference pattern to display control unit 106.
In addition, continue to export under the situation of the judgement that continues the emergency alarm state in the emergency alarm analysis portion, demonstration power mode judging part 111 does not accept to look hearer's selection, and is judged as continuation with super low consumption power mode display video.Have again, under the situation that is the super low consumption power mode,, also can append the directory entry of removing the super low consumption power mode as the options that shows power mode.At this moment, the demonstration power mode of before switching to after the releasing, selecting.
As mentioned above, the video display devices that relates to according to embodiment of the present invention 1, take place and should reduce under the situation of emergency alarm state of power consumption becoming disaster such as earthquake, picture is shown be reduced to automatically till the MIN state of the information that can obtain, the power consumption that video shows can be suppressed to Min..
(embodiment 2)
Then utilize accompanying drawing that the embodiment 2 of video display devices of the present invention is described.In addition, give identical mark to the position identical, and suitably omit its explanation with above-mentioned embodiment 1.
Fig. 6 is the block diagram of formation of the embodiment 2 of expression video display devices 201 of the present invention.In Fig. 6, because television antenna 102, tuner/demodulation section 103, TS code translator 104, MPEG code translator 105, display part 107, additional information extraction unit 109, emergency alarm analysis portion 110, demonstration power mode selection portion 112 and demonstration power mode judging part 111 have the function same with the module shown in Figure 1 of embodiment 1, the Therefore, omited is about the explanation of these parts.
In Fig. 6, different with Fig. 1 is: a part that possesses captions extraction unit 108, display control unit 206 is different.Captions extraction unit 108 is extracted caption information in the information that is multiplexed in TS or the Word message in the digital broadcasting from the output of TS code translator 104, be configured for the information that picture shows.This Word message that is used for the picture demonstration is sent to display control unit 206, usually as shown in Figure 7, shows as (telop) 132 of the telop on the screen or Word message on display part 107.
Generally, for example under the situation that disasters such as earthquake take place, do not have a lot of information after just disaster taking place, true or its region or scale that earthquake will take place as first newspaper are shown as telop (caption information).Information gathering after taking place as disaster thus, it is very useful obtaining caption information.
Then, the action of the video display devices that present embodiment 2 is related to describes.Judge whether to be the emergency alarm state according to the additional information in the TS, if emergency alarm state, then according to the indication that shows power mode judging part 111, the action of display control unit 206 till with the display frame of super low consumption power mode change display part 107, the embodiment 1 that illustrates with the above-mentioned Fig. 1 of utilization is identical, therefore omits explanation.
Here, be that when the Word message that will be sent here by captions extraction unit 108 showed as telop, display control unit 206 changed data as follows and shows under the situation of emergency alarm state.
Fig. 7 B is an example that shows in the super low consumption power mode of present embodiment 2.Display control unit 206 is at first only discerned the telop 132 of input signal, change the video of display part 107, make when making dynamic image data be non-demonstration, the back side to be made as black (having added the part of mesh lines), only show telop 132 with the color beyond white or the black.As a result, shown in Fig. 7 B, can on all not luminous picture, only show the telop (caption information) relevant with emergence message.
Like this, show after can reducing display message significantly, and can be presented at reliably and want the information that obtains under the emergency alarm state, and can cut down power consumption significantly than common audiovisual state.
In addition, above-mentioned action is only carried out under the situation of having only this caption information in the descriptor in PMT as the content of emergency alarm broadcasting, at the whole broadcasted content that is judged as video flowing is under the situation of emergency alarm broadcasting, can show with embodiment 1 described other super low consumption power modes captions are synthesized picture on screen.Like this, Yi Bian can show reliably and want the information that obtains, Yi Bian according to the kind of this information and cut down power consumption significantly.
Have again, though the synthetic back of caption information that will be relevant with emergency alarm and video sends sometimes, but in this case, as long as from video, extract caption information, shown in Fig. 7 B like that so that the video section beyond the captions becomes the mode of complete non-luminous black video information is processed and shown gets final product.
As mentioned above, the video display devices that relates to according to embodiment of the present invention 2, disasters such as earthquake are taking place and becoming under the situation of the emergency alarm state that should reduce power consumption, picture is shown be reduced to automatically till the bottom line state of the information that can obtain, the power consumption that video shows can be suppressed to Min..
(embodiment 3)
In above-mentioned embodiment 1 and embodiment 2, described according to multichannel and be additional to the example that emergency alarm descriptor in the broadcast wave is judged the emergency alarm state when disasters such as earthquake have taken place, but independent notice emergency alarm sometimes.As notice mechanism, the mechanism of transmitting by wireless is arranged, perhaps so that every family transmission of alignment this area to be arranged.
Embodiments of the present invention 3 are provided with the emergency alarm acceptance division at this situation in video display devices of the present invention, with the mechanism that takes place as the detection disaster.In addition, in present embodiment 3, for giving identical mark and suitably omit explanation with the same parts of above-mentioned embodiment.
The formation of the video display devices that present embodiment shown in Fig. 83 relates to.In Fig. 8, to compare following aspect different with formation shown in Figure 6: possess and receive Emergency Alert Message and to showing that power mode judging part 311 passes on the aspect of emergency alarm acceptance division 113 of the meaning that is the emergency alarm state; Show power judging part 311 when determining to show power mode, also consider emergency alarm acceptance division 113 output aspect.In present embodiment 3, by additional information extraction unit 109 and the both sides of emergency alarm analysis portion 110 or emergency alarm acceptance division 113 or a side wherein, constitute emergency alarm judging part 315, it receives the information relevant with emergency alarm, and is judged as the emergency alarm state according to this information.
Action to the video display devices 301 of above such formation is described.Additional information in the TS that is extracted by additional information extraction unit 109 about emergency alarm analysis portion 110 judges whether to be the emergency alarm state, and it is identical with embodiment 2 to be communicated to the action that shows power mode judging part 311, therefore omission explanation.
, under the situation of independent notice Emergency Alert Message is input in the emergency alarm acceptance division 113 the emergency alarm multichannel not being attached in the broadcast wave.Emergency alarm acceptance division 113 is judged as the emergency alarm state by having imported Emergency Alert Message, and conveys to demonstration power mode judging part 311.Show that whether power mode judging part 311 is obtained from emergency alarm analysis portion 110 and emergency alarm acceptance division 113 is the information of emergency alarm state, determines to show power mode.When the output of two modules all is not the emergency alarm state, is common state certainly, thereby determines according to the output that shows power mode selection portion 112.But, when the meaning that transmits from least one side of urgent alarm analysis portion 110 or emergency alarm acceptance division 113 to the emergency alarm state, will show irrespectively that with the output that shows power mode selection portion 112 power mode switches to the super low consumption power mode.
As mentioned above, the video display devices that relates to according to embodiment of the present invention 3, disasters such as earthquake are taking place and becoming under the situation of the emergency alarm state that should reduce power consumption, picture is shown be reduced to automatically till the bottom line state of the information that can obtain, the power consumption that video shows can be suppressed to Min..
In addition, in present embodiment 3, show as the situation that judges whether to possess emergency alarm analysis portion 110 and emergency alarm acceptance division 113 both sides for the mechanism of emergency alarm state, but also can only possess emergency alarm acceptance division 113, become the super low consumption power mode behind the reception Emergency Alert Message.
Have again, as video display devices of the present invention, television receiver with the receiving digital broadcast ripple is that example is illustrated, but so long as receive the video display devices that is made as the super low consumption power mode behind the Emergency Alert Message, then also can be the television receiver that receives the analog broadcasting ripple.
Also have, also can set the holding state of the mechanism that only is judged as the emergency alarm state part supply power relevant with the mechanism that receives Emergency Alert Message to from the additional information of TS, extracting the emergency alarm descriptor.Under this situation, even audiovisual video display devices of the present invention not also can judge whether become the emergency alarm state at holding state.Look on the bright side of things in this state when beginning audiovisual, begin with super low consumption power mode display video by audiovisual.Thus, can prevent under emergency alarm states such as disaster generation, to consume big demonstration power.
(embodiment 4)
In present embodiment 4, the difference of the super low consumption power mode when the description display part is liquid crystal indicator shows an example of control.The block diagram that expression constitutes and Fig. 1, Fig. 6 or Fig. 8 are same, and the actions such as judgement of emergency alarm state are identical with embodiment 1～3.
Generally in liquid crystal indicator, display video is not only determined by the signal that drives liquid crystal panel, is also determined brightness or color matching by backlight.Therefore shown vision signal is also determined by backlight or light guide plate.Have, the influence that the demonstration power of liquid crystal indicator is subjected to video data is few again, and the power that backlight consumed accounts for the overwhelming majority.Thus, reducing in the energy-saving mode of power consumption, realizing that by the brightness that reduces backlight power reduces by reducing brightness.Under this situation, though whole brightness reduces, video information is kept intact, and can appreciate program as usually.
Relative therewith, the example of demonstration control of the super low consumption power mode of the video display devices that embodiment of the present invention 4 relates to is described.Its formation at first is described.
In Fig. 9, a plurality of backlights 143 are set in the framework 148 of the video display devices that embodiment of the present invention 4 relates to.The light transmission light guide plate 144 of backlight, via diffuser plate 146 from the back side as even rayed liquid crystal panel 147.Have again, in advance with the backlight small-sized backlight 145 that was arranged in 143 minutes.The display part of present embodiment 4 is made of these backlights 143, light guide plate 144, diffuser plate 146, liquid crystal panel 147, small-sized backlight 145.
In the display part that constitutes like this, under the situation that is made as the super low consumption power mode, as shown in figure 10, only light backlight 143, and extinguish backlight 143 with black circle (having added the part of mesh lines) expression with white circle expression.Usually only light whole backlight 143, the image quality that is suitable for common audiovisual that just obtains being speckless, but this video information of only lighting a part and showing becomes and is subjected to the spotted video that backlight is lighted the influence of position.Though be not the image quality of appreciating audiovisual usually certainly, but count the over half of reduction sum by the lighting of backlight 143 that will be arranged on the display device back side, thereby can reduce the power relevant, can cut down power consumption significantly than common audiovisual state with lighting of backlight 143.
Figure 11 is the figure of another example of the super low consumption power mode that relates to of expression embodiment of the present invention 4.In Figure 11, by in any part on every side up and down of light guide plate 144 small-sized backlight 145 being set dividually with normally used backlight 143, thereby when the super low consumption power mode, light small-sized backlight 145 by backlight 143 is all extinguished, thereby the further super low consumption power mode that has reduced power consumption can be provided.
In addition, realize under the situation of super low consumption power mode in the control of lighting by above-mentioned backlight, and show with caption information under the situation of emergence message, for example also can carry out following control: only light the backlight corresponding and extinguish other backlight with the position that shows caption information.Under this situation, necessary caption information is display message more clearly, can cut down significantly with respect to this its demonstration power.
Perhaps, to show that in advance the place of caption information is defined as the top or the following either party of picture, if small-sized backlight 145 is set in the mode corresponding with the position of captions demonstration, even on top show, small-sized backlight 145 then is set, if show that in bottom then the bottom in light guide plate 144 is provided with small-sized backlight 145 in the top of light guide plate 144, thereby can cut down power consumption significantly, and the visuognosis decline that captions are shown.
Figure 12 is the figure of the another example of the super low consumption power mode that relates to of expression embodiment of the present invention 4.In formation shown in Figure 12, make light-storing material 157 be dispersed in a side or both sides in light guide plate 144 and the diffuser plate 146.As light-storing material 157, as long as also send the material of fluorescence after selective excitation light disappears more longways.
The action of the display part that constitutes like this is described.Under the common audiovisual state that backlight 143 is all lighted, light-storing material 157 is by the light activated state of backlight.And, take under the situation of super low consumption power mode becoming the emergency alarm state, though display control unit 106 extinguishes whole backlights 143, the driving of liquid crystal panel 147 is carried out as usual.As a result, even backlight 143 is all extinguished, also light-storing material 157 autoluminescences by light guide plate 144 or diffuser plate 146 are contained, thus the video during carrying out necessarily shows.
Though can not appreciate program with common image quality like this, under emergency alarm states such as disaster, can be used as the video acquired information, can cut down power significantly.
(embodiment 5)
In present embodiment 5, be described in an example that adopts the formation of different institutions in the judgement of emergency alarm state.In addition, give identical mark about the position identical, and also suitably omit its explanation with embodiment 1～4.
Figure 13 is the block diagram of formation of an example of expression embodiment of the present invention 5.In the environment that is provided with video display devices 501 of the present invention, be provided with the urgent supply unit 161 of using of work when having a power failure because of source power supplies such as disasters.The urgent supply unit 161 of using can be the electric power storage mode, can utilize fuel cell, can utilize solar cell, perhaps also can be the generator with fuel works such as gasoline.
Promptly with the power failure test section 162 that has the supply that monitors source power supply 164 in the supply unit 161.Power failure test section 162 stops its supply at source power supply 164 and reaches and make promptly with supply unit 161 work under the situation more than the stipulated time, replaces source power supply 164 and supplies with urgent output with supply unit 161.Have again,, then promptly represent the signal of this meaning with 163 outputs of power supply action notice portion if urgent with supply unit 161 work.
Video display devices 501 of the present invention is possessed promptly is the emergency alarm state with power supply motion detection portion 166 accepting urgent judging with the output of power supply action notice portion 163, the situation of promptly moving with supply unit 161.In addition, have a power failure, promptly be that certain accident takes place and possibility that disaster takes place is very high and strong request reduces the state of power consumption at least with the situation of supply unit action, therefore the information that can promptly move with supply unit be made as the information relevant with emergency alarm.Thus, in present embodiment 5, promptly constitute emergency alarm judging part 515 with power supply motion detection portion 166, it receives the information relevant with emergency alarm, and is judged as the emergency alarm state according to this information.
Be judged as action later under the situation of emergency alarm state and embodiment 1～4 is same, show that whether the urgent urgently needed power supply motion detection of power mode judging part 111 portion 166 obtains is the information of emergency alarm state, determines to show power mode.At this moment, because be the emergency alarm state, so will show irrespectively that with the output that shows power mode selection portion 112 power mode switches to the super low consumption power mode.
As mentioned above, video display devices according to embodiment of the present invention 5, disasters such as earthquake are taking place and becoming under the situation of the emergency alarm state that should reduce power consumption, picture is shown be reduced to automatically till the MIN state of the information that can obtain, the power consumption that video shows can be suppressed to Min..Thus, even a kind of video display devices that also can guarantee information gathering when urgent disaster for a long time can be provided.
In addition, because the Video processing of super low consumption power mode or demonstration control are same with embodiment 1～4, its explanation of Therefore, omited.
(embodiment 6)
The formation of being put down in writing with embodiment 5 is different, also the power failure test section can be arranged on the video display devices side.One example of the embodiment 6 of this formation is described.
In Figure 14, power failure test section 165 monitors the power supply supply that offers video display devices 601, supplies with under the situation about having stopped at the power supply that exceeds schedule time and exports failure detection signal, also keeps after power supply is supplied with recovery.When making the failure detection signal counter-rotating, remove pulses from showing that power mode selection portion 612 is exported.
Figure 15 is the circuit diagram of an example of the formation of the power failure test section 165 that relates to of expression embodiment of the present invention 6.As shown in figure 15, can realize with the bistable multivibrator with CR integrating circuit 176 (multi-vibrator) 171.Low outgoing side input 173 at bistable multivibrator 171 connects the CR integrating circuit 176 of storage from the electric charge of the power supply of being supplied with in advance.Like this, discharge the electric charge of CR integrating circuit 176 when having a power failure, even owing to restart the power supply supply, the voltage of CR integrating circuit 176 recovers also to need the time, so the output 174 of bistable multivibrator 171 is fixed to low value.When counter-rotating output, provide pulse as long as import 172 to high outgoing side.
Below, the action of the video display devices 601 of the embodiment of the present invention 6 of such formation is described.
Owing to disaster etc. takes place, though cause temporary transient the power failure, returns to the past by emergency power sometimes and recover the electric power supply.Under this situation,,, power failure test section 165 exports counter-rotating, to showing power mode judging part 311 output failure detection signal thereby making by temporarily stopping the supply of source power supply 164.Show that power mode judging part 311 moves the signal of failure detection signal as expression emergency alarm state.In addition, thus think that the situation that take place to have a power failure is that the state that the very high and strong request of possibility that certain accident disaster takes place reduces power consumption takes place at least.Therefore, the information of expression power failure can be the information relevant with emergency alarm.In present embodiment 6, power failure test section 165 constitutes the emergency alarm judging part 615 that receives the information relevant with emergency alarm and be judged as the emergency alarm state according to this information thus.
It is same to be judged as later action of emergency alarm state and embodiment 1～5, will show irrespectively that with the output that shows power mode selection portion 612 power mode switches to the super low consumption power mode.Thus, carry out video stream data, under the state that shows certain information, transfer to minimum power consumption state in the power modes that is possessed to setting control as the change of the regulation displaying contents of super low consumption power mode or to the display part of regulation.In addition, because the Video processing of super low consumption power mode or demonstration control are same with embodiment 1～5, its explanation of Therefore, omited.
In addition, be judged as when not being the emergency alarm state looking the hearer, look the hearer if use demonstration power mode selection portion 612 to select other demonstration power mode, perhaps remove the operation of super low consumption power mode, then from showing the 612 output releasing pulses of power mode selection portion, the failure detection signal counter-rotating, the super low consumption power mode is disengaged.
As mentioned above, video display devices according to embodiment of the present invention 6, disasters such as earthquake are taking place and becoming under the situation of the emergency alarm state that should reduce power consumption, picture is shown be reduced to automatically till the bottom line state of the information that can obtain, the power consumption that video shows can be suppressed to Min..Thus, even a kind of video display devices that also can guarantee information gathering when urgent disaster for a long time can be provided.
(industrial utilizability)
Can be automatic under the emergency alarm state of video display devices of the present invention when disaster takes place etc. Reduce power consumption, as television receiver or CATV, maybe can be by network acquired information and information is aobvious Be shown in that personal computer on the picture etc. is obtained video information and the video display devices that shows is Useful.
Claims (17)
1. video display devices comprises:
Show the power mode selection portion, its output and the corresponding indicator signal of demonstration power mode based on the selection behavior;
The emergency alarm judging part, it receives the information relevant with emergency alarm, and is judged as the emergency alarm state according to described information;
Show the power mode judging part, it accepts the output signal of described demonstration power mode selection portion and described emergency alarm judging part, under the situation that is not the emergency alarm state, determine to show power mode according to the output of described demonstration power mode selection portion, under the situation of emergency alarm state, send indication to display control unit, feasible output with described demonstration power mode selection portion irrespectively switches to the super low consumption power mode;
Display part, its display video; With
Display control unit, it controls described display part according to the mode that shows with the demonstration power mode based on the indicator signal of described demonstration power mode judging part, is used for the control that video information is shown as practical video;
Described super low consumption power mode reduces power consumption by described display control unit according to video information being changed into monochrome and being made in monochromatic and the black color of little power consumption account for picture mode over half.
2. video display devices according to claim 1, wherein,
Described emergency alarm judging part comprises:
Additional information extraction unit, its extraction are additional to the additional information of obtained video acoustic information; With
The emergency alarm analysis portion, it judges whether to be the emergency alarm state according to the information relevant with emergency alarm in the described additional information.
3. video display devices according to claim 2, wherein,
Described emergency alarm analysis portion obtains the sign of the emergence message descriptor that described additional information comprises and the information of area code, judges whether to be the emergency alarm state.
4. video display devices according to claim 1, wherein,
Described emergency alarm judging part comprises the emergency alarm acceptance division, and it receives the Emergency Alert Message by external notification, is judged as the emergency alarm state by the input Emergency Alert Message, and passes on to described demonstration power mode judging part.
5. video display devices according to claim 1, wherein,
Described emergency alarm judging part comprises urgent with power supply motion detection portion, and it informs that being arranged on the outside situation that has promptly begun the signal that moves with supply unit judges and be the emergency alarm state having received.
6. video display devices according to claim 1, wherein,
Described emergency alarm judging part comprises the power failure test section, and its supervision supplies to the power supply of video display devices and supplies with, and supplies with under the situation about having stopped at the power supply that exceeds schedule time, and the output failure detection signal is also kept described output after power supply is supplied with recovery.
7. according to each described video display devices in the claim 1～6, wherein,
Described super low consumption power mode accounts for picture mode over half with demonstration counter-rotating monochromatic and black by described display control unit according to the color that makes little power consumption in monochromatic and the black, thereby reduces power consumption.
8. according to each described video display devices in the claim 1～6, wherein,
Described super low consumption power mode by described display control unit according to only controlling with the mode that shows of the same colour in the output color of described display part, thereby reduce power consumption.
9. according to each described video display devices in the claim 1～6, wherein,
Described super low consumption power mode by described display control unit according to making the part lower mode not luminous, that make the part higher be shown as described regulation brightness change video information than regulation brightness than regulation brightness, thereby reduce power consumption.
10. according to each described video display devices in the claim 1～6, wherein,
Described super low consumption power mode is changed into the area of indication range according to video information being carried out at interval extraction or interpolation by described display control unit and is narrowed down to 1/2 below and the non-luminous mode of part beyond the indication range is controlled, thus the reduction power consumption.
11. according to each described video display devices in the claim 1～6, wherein,
Also comprise the captions extraction unit, it extracts caption information, constitutes the information that picture shows usefulness,
Described super low consumption power mode is that non-demonstration and to make the back side be black, the mode that only described caption information shown with the color beyond white or the black changes described display part video show by described display control unit according to making dynamic image data, thereby reduces power consumption.
12. according to each described video display devices in the claim 1～6, wherein,
Described display part is the liquid crystal indicator that possesses liquid crystal panel and backlight,
Described super low consumption power mode makes the control 1/2 below when the audiovisual usually of number that described backlight lights by described display control unit, thus the reduction power consumption.
13. according to each described video display devices in the claim 1～6, wherein,
Described display part be possess liquid crystal panel, backlight, the described backlight of conduction light light guide plate and be arranged on the liquid crystal indicator of the illuminating part of described light guide plate side,
The control that described super low consumption power mode is extinguished described backlight, lighted described illuminating part by described display control unit, thus power consumption reduced.
14. according to each described video display devices in the claim 1～6, wherein,
Described display part is a liquid crystal indicator, it comprise liquid crystal panel, backlight and conduct the light guide plate of light of described backlight at least and diffusion by the diffuser plate of the light of the described light guide plate transmission at least one side in the two,
This liquid crystal indicator makes light-storing material be distributed at least one side in described light guide plate and the described diffuser plate, and this light-storing material is by the optical excitation of backlight and also luminous after exciting light extinguishes,
Described super low consumption power mode is controlled by the described display control unit mode that the driving of described liquid crystal panel is carried out as usual according to extinguishing described backlight, thereby reduces power consumption.
15. a video display devices comprises:
Show the power mode selection portion, its output and the corresponding indicator signal of demonstration power mode based on the selection behavior;
The emergency alarm judging part, it receives the information relevant with emergency alarm, and is judged as the emergency alarm state according to described information;
Show the power mode judging part, it accepts the output signal of described demonstration power mode selection portion and described emergency alarm judging part, under the situation that is not the emergency alarm state, determine to show power mode according to the output of described demonstration power mode selection portion, under the situation of emergency alarm state, send indication to display control unit, feasible output with described demonstration power mode selection portion irrespectively switches to the super low consumption power mode;
Display part, its display video; With
Display control unit, it controls described display part according to the mode that shows with the demonstration power mode based on the indicator signal of described demonstration power mode judging part, is used for the control that video information is shown as practical video;
Described emergency alarm judging part comprises the power failure test section, and its supervision supplies to the power supply of video display devices and supplies with, and supplies with under the situation about having stopped at the power supply that exceeds schedule time, and the output failure detection signal is also kept described output after power supply is supplied with recovery.
16. a video display devices comprises:
Show the power mode selection portion, its output and the corresponding indicator signal of demonstration power mode based on the selection behavior;
The emergency alarm judging part, it receives the information relevant with emergency alarm, and is judged as the emergency alarm state according to described information;
Show the power mode judging part, it accepts the output signal of described demonstration power mode selection portion and described emergency alarm judging part, under the situation that is not the emergency alarm state, determine to show power mode according to the output of described demonstration power mode selection portion, under the situation of emergency alarm state, send indication to display control unit, feasible output with described demonstration power mode selection portion irrespectively switches to the super low consumption power mode;
Display part, its display video;
Display control unit, it controls described display part according to the mode that shows with the demonstration power mode based on the indicator signal of described demonstration power mode judging part, is used for the control that video information is shown as practical video; With
The captions extraction unit, it extracts caption information, constitutes the information that picture shows usefulness;
Described display part be possess liquid crystal panel, backlight, the described backlight of conduction light light guide plate and be arranged on the liquid crystal indicator of the illuminating part of described light guide plate side,
The control that described super low consumption power mode is extinguished described backlight, lighted described illuminating part by described display control unit, thus power consumption reduced.
17. a video display devices comprises:
Show the power mode selection portion, its output and the corresponding indicator signal of demonstration power mode based on the selection behavior;
The emergency alarm judging part, it receives the information relevant with emergency alarm, and is judged as the emergency alarm state according to described information;
Show the power mode judging part, it accepts the output signal of described demonstration power mode selection portion and described emergency alarm judging part, under the situation that is not the emergency alarm state, determine to show power mode according to the output of described demonstration power mode selection portion, under the situation of emergency alarm state, send indication to display control unit, feasible output with described demonstration power mode selection portion irrespectively switches to the super low consumption power mode;
Display part, its display video; With
Display control unit, it controls described display part according to the mode that shows with the demonstration power mode based on the indicator signal of described demonstration power mode judging part, is used for the control that video information is shown as practical video;
Described display part is a liquid crystal indicator, it comprise liquid crystal panel, backlight and conduct the light guide plate of light of described backlight at least and diffusion by the diffuser plate of the light of the described light guide plate transmission at least one side in the two,
This liquid crystal indicator makes light-storing material be distributed at least one side in described light guide plate and the described diffuser plate, and this light-storing material is by the optical excitation of backlight and also luminous after exciting light extinguishes,
Described super low consumption power mode is controlled by the described display control unit mode that the driving of described liquid crystal panel is carried out as usual according to extinguishing described backlight, thereby reduces power consumption.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP295920/2004 | 2004-10-08 | ||
| JP2004295920 | 2004-10-08 | ||
| JP275698/2005 | 2005-09-22 |
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| Publication Number | Publication Date |
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| CN101036181A CN101036181A (en) | 2007-09-12 |
| CN100483504C true CN100483504C (en) | 2009-04-29 |
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| CNB2005800342328A Expired - Fee Related CN100483504C (en) | 2004-10-08 | 2005-10-06 | Video display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8902149B2 (en) | 2009-06-17 | 2014-12-02 | Sharp Laboratories Of America, Inc. | Methods and systems for power control event responsive display devices |
| JP2012195739A (en) * | 2011-03-16 | 2012-10-11 | Toshiba Corp | Display device |
| CN113838270A (en) * | 2021-09-29 | 2021-12-24 | 成都市美幻科技有限公司 | Earthquake early warning method and device, electronic equipment and storage medium |
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