CN1039694A - Used as television illuminating lamp automatic light modulating method and device thereof - Google Patents
Used as television illuminating lamp automatic light modulating method and device thereof Download PDFInfo
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- CN1039694A CN1039694A CN88105548A CN88105548A CN1039694A CN 1039694 A CN1039694 A CN 1039694A CN 88105548 A CN88105548 A CN 88105548A CN 88105548 A CN88105548 A CN 88105548A CN 1039694 A CN1039694 A CN 1039694A
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Abstract
Used as television illuminating lamp automatic light modulating method and device thereof are applicable to the light modulation of doing indoor environment (machine rear backdrop) illumination when watching TV.It is characterized in that: with the curtage relevant with the TV image mean flow rate as the ambient lighting brightness control signal; make the illuminating lamp luminous intensity follow image averaging brightness and change automatically; indoor environment when watching TV (machine rear backdrop) lighting problem with solution; make human eye vision be adapted to image brightness, the protection eye health.
Description
The present invention relates to a kind of illuminating lamp automatic light modulating method and device thereof, it can make the luminous intensity of illuminating lamp change automatically with the mean flow rate of TV image.
The people always watches TV under certain environment, common ambient lighting will reduce image contrast, influenced serious be the low-light level part and the details in a play not acted out on stage, but told through dialogues scene of image.Watch TV in dim environment, though the unlikely reduction of image contrast, feeling of the visual shade of grey is very poor, and viewing effect is also bad, and the eye retina part is subjected to overstimulation and very uncomfortable, impairs eye health.Present improvement method is with there being the cover desk lamp to make the localized lighting of machine rear backdrop at the TV pusher side, and it is little that eye pupil is received to some extent, and alleviating the local suffered overstimulation of retina, and phosphor screen is not subjected to the direct sunshine photograph, unlikely obvious reduction image contrast.But this does not solve the vision adaptive problem of human eye to image brightness.
When human eye was watched actual scenery, by adjustings such as pupils, visual adaptation was in certain mean flow rate in the eyes visual field.1～10
3In the photopic vision scope of nit brightness, the relative visual limen of visual characteristic has minimum at the mean flow rate place be 0.02, i.e. brightness differs 2% just can feel to differentiate the shade of grey; Brightness is little or big, locates for 3 times in mean flow rate, and it is 0.04～0.05 that threshold value raises; Locating at 10 times, is 0.08～0.12.After surpassing 20～30 times, greatly do not think brighter more yet, still feel it is black forr a short time, lose the sensation of the shade of grey.
At present, the suitable distance of watching TV is 4～6 times of phosphor screen height, and in 4 times, phosphor screen is to the subtended angle of human eye, vertical direction is 15 °, and horizontal direction is 20 °, and the visual field of human eye, vertical direction is 120 °, and horizontal direction is 160 ° and is ellipse garden shape that promptly phosphor screen only accounts for 2% of the visual field.Like this, under full dark situation, the mean flow rate in the visual field is 2% of image averaging brightness, and human eye vision is far from suitable in image brightness.Adjust appropriate television set, image averaging brightness is 100nit to the maximum, and minimum is 1nit, and 100 times variation is promptly arranged, and the contrast of image also can reach 50～100.Under constant background illumination, this mean flow rate to the visual field changes very little, and human eye vision adapts to almost invariable.When the visual field mean flow rate that adapts to human eye vision when the brightness of image differs too much, will obviously influence the sensation of the shade of grey, reduce even lose the situation of shade of grey sense, especially bright field scene and details in a play not acted out on stage, but told through dialogues scene.
So, on the representation image, make people obtain the identical sensation of subjective and former scenery, the i.e. sense of reality, except that television system keeps the contrast of former scenery, human eye is adapted to draw the visual field mean flow rate of feeling as the shade of grey of watching former scenery.Though it is with there being some difference at random between the image averaging brightness, but they equate to work as is most probable, difference between them usually can be very not big, so visual field mean flow rate is close with image averaging brightness, still can take into account various situations, image all will provide the very abundant shade of grey sensation, especially bright field scene and details in a play not acted out on stage, but told through dialogues scene.As the scene at night, the shade of grey of most of dim scenery sensation increases, and no longer is black blackened or grey mush a slice, and the light emitting source in the scene is then more apparent bright and glittering.
The objective of the invention is to make that this illuminating lamp is followed the TV image mean flow rate and the used as television illuminating lamp automatic light modulation device that changes luminous intensity automatically, indoor environment when watching TV (machine rear backdrop) lighting problem with solution, make human eye vision be adapted to TV image brightness, the shade of grey sensation of abundant image, improve the sense of reality, the viewing effect of particularly details in a play not acted out on stage, but told through dialogues scene.
Feature of the present invention is with voltage or the electric current relevant with TV image brightness, obtain the signal of image averaging brightness as kinescope electron beam electric current or picture tube cathode current, controlling signal as environment (background) brightness of illumination, be used for regulating the power of environment (background) illuminating lamp, make its luminous intensity follow image averaging brightness and change automatically, and human eye field range intraoral illumination mean flow rate approach image averaging brightness.
Fig. 1 is the block diagram of used as television illuminating lamp light modulating device of the present invention
Fig. 2 is the kinescope electron beam electric current I of image averaging brightness of the present invention
BSignal takes out circuit
Fig. 3 is the picture tube cathode current I of image averaging brightness of the present invention
KSignal takes out circuit
Fig. 4 is signal power controlling regulating circuit of the present invention and incandescent lamp
Fig. 5 is low-powered incandescent lamp of the present invention and signal power controlling regulating circuit
As everyone knows, the electric signal of image averaging brightness can use optical-electrical converter on appropriate location, television screen front, will change electric flux into from the light energy that phosphor screen is accepted and obtains.In addition, TV image is to be modulated the luminous of teletron screen and shown by the cloudy gate voltage of full television signal-video channel luminance signal (not considering chrominance signal)-picture tube (also be subjected to television set " brightness regulation " and change).Their flip-flop is relevant with image averaging brightness, and wherein cloudy gate voltage then has fixed relationship.The characteristics of luminescence of teletron screen, not too generally big in electron beam density, the same electron beam current of image averaging brightness (on average) is directly proportional, and same cathode current (on average) is directly proportional.Thereby the image averaging luminance signal also can obtain from television set inside.Obtain the image averaging luminance signal from television set inside, more convenient in the use, and wherein good person is kinescope electron beam electric current and picture tube cathode current.The present invention as ambient lighting brilliance control signal, again by the power conditioning circuitry by signal control, regulates the power of illuminating lamp with the signal of above-mentioned image averaging brightness, makes its luminous intensity follow image averaging brightness and change automatically.The device that the present invention designs according to this, structure such as Fig. 1.
Among Fig. 1,1 is that ambient lighting brilliance control signal (image averaging luminance signal) takes out circuit, and 2 is signal power controlling regulating circuit, and 3 is lighting lamp circuit.
Operation principle of the present invention is as follows: ambient lighting brilliance control signal takes out circuit 1 and obtains voltage relevant with image brightness or electric current, and wherein good person is the kinescope electron beam electric current return loop taking-up electron beam current I from the horizontal equilibrium flyback transformer high-tension coil
BSignal, or from picture tube cathode return circuit taking-up cathode current I
KSignal; Average, remove its picture frequency composition, get its direct current (comprising gradual) composition, suitably amplify, output is proportional to the signal of image averaging brightness, as the brightness of illumination controlling signal.It regulates the illuminating lamp power of lighting lamp circuit 3 by signal power controlling regulating circuit 2.Thereby the illuminating lamp luminous intensity is followed image averaging brightness and change automatically.Suitable adjustment makes human eye environment within the vision (background) illumination mean flow rate approach image averaging brightness.
Below in conjunction with accompanying drawing, further specify embodiments of the invention.
Fig. 2 is the kinescope electron beam electric current I as circuit 1
BSignal takes out circuit.It is by filter capacitor, transistor T
1And base resistance R
BWith compensation diode and emitter resistance R
EForm.End 5 is connected to the beam electronic current return terminal of horizontal equilibrium flyback transformer high-tension coil, and end 6 is connected to positive source (V
CC〉=12V).In the return current of high-tension coil, its line frequency composition is extremely after filter capacitor returns the horizontal equilibrium flyback transformer high-tension coil; Its direct current and the composition that slowly changes are electron beam average current I
BFor being proportional to the current signal of image averaging brightness, it is divided into two tunnel, one road resistance R of flowing through through power supply to the ground after holding 6 inputs
BReturn high-tension coil, the one tunnel flows through resistance R
EBecome transistor T
1Base current return high-tension coil.Back one tunnel is through transistor T
1Cascode amplifies, and the gained collected current for flowing to earth terminal, is proportional to the brightness of illumination controlling signal of image averaging brightness from holding 7 outputs.With resistance R
BOr resistance R
EOne of use adjustable resistance W
B, just can pass through adjustable resistance W
BSize of current to the output controlling signal is adjusted.
Fig. 3 is the picture tube cathode current I as circuit 1
KSignal takes out circuit.It is by transistor T
2, transistor T
3And base resistance R
BWith compensation diode and emitter resistance R
EAnd filter capacitor is formed.It is connected with television set, and as to put direct-coupled situation be example to look, end 8 is connected to look puts output, and end 9 is connected to the picture tube negative electrode, and end 10 is connected to positive source (V
CC〉=12V).Transistor T
2Effect to videl signal is an emitter follower.Picture tube cathode current input transistors T
2Emitter-base bandgap grading, again from collecting utmost point output (transistor the effect here is the cobasis amplifying stage), wherein to ground, its direct current and the composition that slowly changes are negative electrode average current I through the filter capacitor bypass for field frequency and above frequency content
K,, be proportional to the current signal of image averaging brightness for flowing to earth terminal.It is again through transistor T
3Amplify, hold 11 outputs certainly,, be proportional to the brightness of illumination controlling signal of image averaging brightness for flowing to earth terminal.Work as resistance R
BOr resistance R
EOne of use adjustable resistance W
B, just can pass through adjustable resistance W
BSize of current to the output controlling signal is adjusted.Enough big as the negative electrode average current, can omit transistor T
3And signal is directly held 12 outputs, then resistance R certainly
BWith the compensation diode, and resistance R
ECan be arranged at transistor T
2Base stage and emitter-base bandgap grading, and same, and one of them uses adjustable resistance W
BAnd adjust.Chromoscope has a plurality of negative electrodes, then with transistor T arranged side by side
2, T '
2, T "
2... obtain its cathode current from each cathode return circuit respectively, or their additions or be weight and the summation of addition all can be used as the image averaging luminance signal with the luminous efficiency of its pairing luminescent material.The adjustment of weight can be at each transistor T
2, T '
2, T "
2... base resistance R is set respectively
BWith compensation diode and emitter resistance R
E, and resistance R
BOr resistance R
EOne of adjust with adjustable resistance respectively.
Fig. 4 is a kind of incandescent lamp and signal power controlling regulating circuit 2.They are by transistor T
4, rectifier bridge and two input series resistances thereof, energy storage electric energy C triggers element (using silicon bidirection switch SBS among the figure), pulse transformer, bidirectional triode thyristor, the interference capacitors that disappears, incandescent lamp (being not limited to) and brightness of illumination photoelectricity negative-feedback circuit are formed.End 13 is connected to the end 11(of the end 7 of Fig. 2 or Fig. 3 or holds 12), end 14 and end 15 are connected to power frequency.Controlling signal electric current and quiet bias current from end 13 inputs become transistor T
4The source of collected current, transistor T
4Base current is the power frequency full-wave electric current of rectifier bridge output, transistor T
4Operating state for ending, amplify and saturated, and the most of the time is in saturation condition.Transistor T
4Collected current is subjected to base stage copped wave, becomes continuous trapezoidal wave, and its amplitude is input controlling signal electric current and quiet bias current sum, and its frequency is two times of power frequencies.Transistor T
4Emitter current (approaching collected current) charges to storage capacitor C, voltage reaches and triggers element conductive voltage (representative value of silicon bidirection switch SBS is 8V) on it, trigger element conductive, storage capacitor C is through the discharge of pulse primary, at secondary generation trigger impulse.The pilot angle of trigger impulse is inversely proportional to charging current, so with this pulse-triggered controllable silicon, image averaging brightness is big more, charging current is big more, the trigger impulse pilot angle is more little, and thyristor operating angle is big more, controllable silicon do series voltage regulate the effective voltage of exporting and power big more, the incandescent lamp luminous intensity is big more, and promptly the illuminating lamp luminous intensity changes automatically with image averaging brightness.But the characteristics of luminescence of silicon controlled control characteristic and incandescent lamp all has bigger non-linear, and the ghyristor circuit of linear regulation is normally very complicated.The present invention reduces non-linear between illuminating lamp luminous intensity and image averaging brightness relationship with brightness of illumination photoelectricity negative-feedback circuit.The photoelectricity negative-feedback circuit is by photodiode (photoelectric cell) and amplifier (transistor T
5And base resistance R
BWith compensation diode and emitter resistance R
E) form.Photoelectric cell picks up illumination, transistor T
5Output is connected to end 13(or other can become degenerative place, as the end 12 of Fig. 2, and the end 17 of Fig. 5 etc.).Photoelectric cell is accepted illumination, produces the photoelectricity signal that is proportional to illumination, as photogenerated current input transistors T
5Base stage, through amplifying, its emitter current or collected current and photogenerated current reduce transistor T to controlling signal electric current and quiet bias current shunting action from end 13 inputs
4Collected current and constitute negative feedback.Leave certain proportional relation as illumination like this and bigger than normal, transistor T
5Shunting action also bigger than normal, so reduce transistor T
4Collected current reduces the controllable silicon output voltage; Less than normal as the illumination relation, then increase the controllable silicon output voltage, the deviation of leaving proportional relation between illumination and image averaging brightness is reduced.As resistance R
BOr resistance R
EOne of use adjustable resistance W
B, just can pass through adjustable resistance W
BSize to amount of negative feedback is adjusted.
Adjustable resistance W in the above circuit
BAdjustment to controlling signal size of current or photoelectricity amount of negative feedback size, setting illuminating lamp full power is put pairing image averaging brightness to play a major role, make the visual field mean flow rate and the image averaging brightness of illumination approaching in middle and high brightness range, promptly " bright " adjusted.
In addition, for adapting to the characteristics of luminescence of silicon controlled operating characteristic and incandescent lamp, take out in circuit or the signal power controlling regulating circuit in the brightness of illumination controlling signal biasing resistance R is set
D, as at transistor T
1Between base stage and the earth terminal, transistor T
3Between base stage and the positive source, the end 7, the end 11 or hold 13 and positive source between, make transistor T
4Have suitable quiet bias current, be no more than 180 ° with the maximum pilot angle that limits SCR trigger pulse.Work as resistance R
DUse adjustable resistance W
DThe time, just can pass through adjustable resistance W
DSize to quiet bias current is adjusted, and sets the minimum angle of flow of silicon controlled, makes to add minimum voltage on the illuminating lamp and be in the power that illuminating lamp just begins " luminous ".This adjusts and plays a major role to setting illuminating lamp " luminous " starting point, makes the visual field mean flow rate of illumination and image averaging brightness approaching in low intensity range, i.e. " secretly " adjustment.
If also comprise other electric currents in the horizontal equilibrium flyback transformer high-tension coil return current, as the focus loop electric current, will be by electron beam I
BSignal takes out circuit quiet bias current is produced contribution, and this electric current is adjusted as influencing " secretly " too greatly, then transistor T
1Base stage can be omitted the compensation diode, or again at transistor T
1Penetrate knot two end spaies and connect a resistance R
BEReduce it with bypass.
Fig. 5 is another kind of low-powered incandescent lamp and signal power controlling regulating circuit 2.It is by transistor T
6And base resistance and compensation diode, and emitter resistance, transistor T
7And base resistance and low-powered incandescent lamp are formed.End 16 is connected to the end 7 of Fig. 2 or the end 11 of Fig. 3, input brightness of illumination controlling signal electric current, and end 18 is connected to the input of power regulator in the television set, and end 17 is connected to its output, the transistor T of incandescent lamp and series connection thereof
7The input and the output of cross-over connection power regulator in television set are obtained shunting from voltage stabilization power adjusting pipe.Input controlling signal electric current is through transistor T
6Amplify, again through transistor T
7Amplify transistor T
7Output current (emitter-base bandgap grading is low-resistance output) becomes the electric current of incandescent lamp.Thereby the power of incandescent lamp is subjected to transistor T
7Regulate, its luminous intensity is followed image and is automatically changed.Wherein, transistor T
7Quiet bias current also can be from a biasing resistance R is set
DAnd obtain (being arranged on transistor T
6Base stage or can omit the compensation diode again during the front), work as resistance R
DUse adjustable resistance W
D, the size that just can contrast quiet biasing is adjusted, the power that illuminating lamp is in just begin " luminous ".This device is fit to be installed in the television set that adopts the buck stabilized voltage power supply, not extra power consumption.Incandescent lamp electric current maximum can be 80% of stabilized voltage power supply output current, can obtain 5W power as common medium and small screen black and white machine (12V voltage) with 6V incandescent lamp maximum.
During concrete enforcement, consider the convenience of use, light modulating device of the present invention can be additional in the television set and the controlled source joint chair that will connect illuminating lamp is arranged on the television cabin; This device also can partly be additional in the television set, and part or major part are additional in the lighting (or adorn an independence in addition and close for a short time), and the controlled source socket is set on it again.The photoelectric cell of photoelectricity negative-feedback circuit can be arranged on the television cabin or on the light fixture.Low-power lighting also can be with television set attaching one.
The available common small desk lamp of illuminating lamp (being not limited to) is placed near the television set, or hangs on the television cabin, makes the localized lighting of machine rear backdrop.Its lampshade will lack printing opacity or light tight, and the most handy little reflection shield (hemisphere or half garden cylindricality) is dazzle the eyes to avoid illuminating lamp itself, and increases brightness of illumination, reduces power consumption.The rated power of incandescent lamp reaches 20%～50% of visual maximum mean flow rate 100nit with the visual field mean flow rate of its illumination, and promptly 20～50nit gets final product.With light background, distance is 4 times of phosphor screen height between people and phosphor screen, and distance is 5 times of meters between people and background, as the 37cm television set, is roughly 15～50W(gross power), the 51cm machine is roughly got 30～100W.The rated power of incandescent lamp and number can according to circumstances oneself be selected by the user.
Common full room illumination lamp is subjected to the light modulation of this device, to the details in a play not acted out on stage, but told through dialogues scene of visual low-light level, also produces certain effect of improving, if but only use full room illumination lamp, human eye vision adaptation in the high scope then requires bigger illuminating lamp power in the brightness of consideration image averaging.
Advantage of the present invention:
1. improve the television-viewing effect. Be used as indoor environment (machine rear backdrop) illumination when watching TV, do not reduce the contrast of TV image, make human eye vision be adapted to image brightness, enrich visual shade of grey sensation, improve the sense of reality, the viewing effect of particularly details in a play not acted out on stage, but told through dialogues scene, and increase artistic feeling. Machine rear backdrop brightness of illumination is followed image averaging brightness, produces the sensation of being in the action in brightness.
2. electricity consumption saves lighting.Make the localized lighting of machine rear backdrop when watching TV, and reduce power consumption because of power adjustments.So electricity consumption will more full chamber constant illumination, save and effectively.
3. protect eyes and eyesight.Avoid since image with respect to crossing bright on every side eye pupil shrink and cause the retina part to be subjected to overstimulation inadequately.Though avoid image and surrounding brightness harmonious and watch desired brightness not enough as watching attentively, cause the eyeball nutrient consumption too much, cause the ciliary muscle atrophy, hypocyclosis and myopia.
Claims (9)
1, used as television illuminating lamp method and apparatus with an automatic light meter, be applicable to the light modulation of making environment (machine rear backdrop) illuminating lamp when watching TV, it is characterized in that with the curtage relevant as ambient lighting brilliance control signal with the TV image mean flow rate, make the illuminating lamp luminous intensity follow image averaging brightness and change automatically, and by ambient lighting brilliance control signal (image averaging luminance signal) taking-up circuit 1, signal power controlling regulating circuit 2 and lighting lamp circuit 3 are formed.
2, according to the method and apparatus of claim 1, it is characterized in that ambient lighting brilliance control signal takes out circuit 1 and obtains kinescope electron beam average current signal from the kinescope electron beam electric current return loop of horizontal equilibrium flyback transformer high-tension coil, as the image averaging luminance signal, after it suitably amplifies, output brightness of illumination controlling signal.
3, according to the method and apparatus of claim 1, it is characterized in that ambient lighting brilliance control signal takes out circuit 1 and obtains picture tube negative electrode average current signal from the picture tube cathode return circuit, as the image averaging luminance signal, or again after suitably amplifying, output brightness of illumination controlling signal.
4, according to the device of claim 3, it is characterized in that it is to obtain its cathode current from each cathode return circuit of picture tube respectively by its a plurality of amplifying stages arranged side by side that ambient lighting brilliance control signal takes out circuit 1, their additions or with its luminous efficiency of corresponding luminescent material be weight and the summation of addition, as the image averaging luminance signal.
5,, it is characterized in that ambient lighting brilliance control signal takes out circuit 1 or signal power controlling regulating circuit 2 is connected to brightness of illumination electro-optical feedback circuit according to the method and apparatus of claim 1.
6,, it is characterized in that the power adjustments pipe T of illuminating lamp and series connection thereof according to the device of claim 1
7The input and the output of cross-over connection power regulator in television set, illuminating lamp electric current voltage stabilization power adjusting pipe in television set is shunted and is got.
7,, it is characterized in that brightness of illumination controlling signal taking-up circuit 1 has adjustable resistance W according to the device of claim 1
B, by adjustment, set the illuminating lamp full power and put pairing image averaging brightness the controlling signal size, do " bright " and adjust.
8,, it is characterized in that the brightness of illumination controlling signal is taken out circuit 1 or signal power controlling regulating circuit 2 has adjustable resistance W according to the device of claim 1
D, by adjusting, set " luminous " starting point of illuminating lamp to quiet biasing size, do " secretly " and adjust.
9,, it is characterized in that brightness of illumination electro-optical feedback circuit has adjustable resistance W according to the device of claim 5
B, by adjustment, set the illuminating lamp full power and put pairing image averaging brightness electro-optical feedback amount size, do " bright " and adjust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88105548A CN1039694A (en) | 1988-07-16 | 1988-07-16 | Used as television illuminating lamp automatic light modulating method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88105548A CN1039694A (en) | 1988-07-16 | 1988-07-16 | Used as television illuminating lamp automatic light modulating method and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1039694A true CN1039694A (en) | 1990-02-14 |
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ID=4833728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88105548A Pending CN1039694A (en) | 1988-07-16 | 1988-07-16 | Used as television illuminating lamp automatic light modulating method and device thereof |
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| Country | Link |
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| CN (1) | CN1039694A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100341383C (en) * | 2002-01-27 | 2007-10-03 | 海尔集团公司 | Intelligent control background lamp of TV set |
| CN100359932C (en) * | 2005-05-30 | 2008-01-02 | 海信集团有限公司 | Self-adapting method for adjusting brightness in liquid crystal TV set |
| CN102138132A (en) * | 2008-09-01 | 2011-07-27 | 三菱数字电子美国公司 | Systems and methods to enhance television viewing |
| CN102752661A (en) * | 2005-08-04 | 2012-10-24 | 三星电子株式会社 | Method and apparatus for displaying viewing time and TV ratings based on viewer grade |
| CN104267607A (en) * | 2014-09-10 | 2015-01-07 | 京东方科技集团股份有限公司 | Method and device for adjusting indoor light brightness and intelligent home control system |
| CN104936334A (en) * | 2014-03-20 | 2015-09-23 | 联想(北京)有限公司 | Light control method and device |
| CN110543191A (en) * | 2019-08-28 | 2019-12-06 | 华南理工大学 | Building lighting control device and method based on indoor visual image analysis |
-
1988
- 1988-07-16 CN CN88105548A patent/CN1039694A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100341383C (en) * | 2002-01-27 | 2007-10-03 | 海尔集团公司 | Intelligent control background lamp of TV set |
| CN100359932C (en) * | 2005-05-30 | 2008-01-02 | 海信集团有限公司 | Self-adapting method for adjusting brightness in liquid crystal TV set |
| CN102752661A (en) * | 2005-08-04 | 2012-10-24 | 三星电子株式会社 | Method and apparatus for displaying viewing time and TV ratings based on viewer grade |
| CN102752661B (en) * | 2005-08-04 | 2015-01-14 | 三星电子株式会社 | Method and apparatus for displaying viewing time and TV ratings based on viewer grade |
| CN102138132A (en) * | 2008-09-01 | 2011-07-27 | 三菱数字电子美国公司 | Systems and methods to enhance television viewing |
| CN104936334A (en) * | 2014-03-20 | 2015-09-23 | 联想(北京)有限公司 | Light control method and device |
| CN104936334B (en) * | 2014-03-20 | 2018-03-27 | 联想(北京)有限公司 | Lamp light control method and device |
| CN104267607A (en) * | 2014-09-10 | 2015-01-07 | 京东方科技集团股份有限公司 | Method and device for adjusting indoor light brightness and intelligent home control system |
| US9723690B2 (en) | 2014-09-10 | 2017-08-01 | Boe Technology Group Co., Ltd. | Method and device for adjusting indoor brightness and smart home control system |
| CN110543191A (en) * | 2019-08-28 | 2019-12-06 | 华南理工大学 | Building lighting control device and method based on indoor visual image analysis |
| CN110543191B (en) * | 2019-08-28 | 2020-06-19 | 华南理工大学 | Building lighting control device and method based on indoor visual image analysis |
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