CN201063938Y - Brightness control circuit and display device provided with the circuit - Google Patents

Brightness control circuit and display device provided with the circuit Download PDF

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Publication number
CN201063938Y
CN201063938Y CNU2007200248375U CN200720024837U CN201063938Y CN 201063938 Y CN201063938 Y CN 201063938Y CN U2007200248375 U CNU2007200248375 U CN U2007200248375U CN 200720024837 U CN200720024837 U CN 200720024837U CN 201063938 Y CN201063938 Y CN 201063938Y
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value
module
brightness
display device
light intensity
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陈益军
李宾
刘影疏
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Qingdao Hisense Electronics Co Ltd
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Qingdao Hisense Electronics Co Ltd
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Abstract

The utility model discloses a brightness regulating circuit and a display device provided with the brightness regulating circuit, comprising an ambient light induction module, a computation module and a regulating module, wherein, the ambient light induction module induces current ambient light intensity which is then converted into corresponding intensity value; the computation module receives current ambient light intensity value outputted by an ambient light induction unit and generates target brightness value of the display device according to the current ambient light intensity value; the regulating module receives the target brightness value outputted by the computation module and regulates brightness of the display device into the target brightness value. By adoption of a regulating circuit structure of the utility model, automatic regulation of the display brightness of the display device according to the ambient light intensity is realized and complication of manual regulation of users is left out.

Description

Brightness regulating circuit and have the display device of described brightness regulating circuit
Technical field
The utility model belongs to the display control technology field, specifically, relates to a kind of display brightness and adjusts circuit structure.
Background technology
The quality of display device display image and people feel that close getting in touch arranged, and surround lighting is very big to people's sensation influence.Under the situation as outdoor environment light intensity by day, display device needs very bright display effect could allow the user recognize to know its displaying contents; And the very dark situation of surround lighting at night, if the display device display brightness will make the people feel very dazzling too by force.Therefore, regulating that display device is operated in the appropriate display brightness is very important for its user.
The method that existing display device is adjusted its display brightness is by artificial the adjusting of user mostly.For example, the user adjusts to suitable display brightness with display device at noon the time, and to night, can think that just the display brightness of display device is very bright, very dazzling, at this moment the user must manual dim it, and to second day high noon, can feel that again its demonstration is unclear, promptly very dark, at this moment need again it is lightened, so repeatedly, well imagine it is quite loaded down with trivial details.Simultaneously, in user's adjustment process, need constantly to carry out experimental increase again or reduce brightness, its adjustment process also bothers concerning the user very much.
In order to address the above problem, many production firms are provided with some luminance patterns in its display device, as long as the user selects corresponding luminance patterns according to concrete external environment.But, there is a problem so again, the residing environment of user sometimes can not with production firm's built-in luminance patterns coupling in its equipment, that is to say this method built-in luminance patterns be limited after all, might not satisfy user's actual demand.In addition, even the luminance patterns that the residing environment of user can be built-in with it coupling is tabulated but the user still needs to access in person the adjustment mode, searching one by one is to select suitable pattern then, so also be cumbersome, also lose time simultaneously.
Therefore, demand urgently occurring a kind of can be according to the solution of adjusting the display device display brightness a little less than the environmental light intensity automatically.
The utility model content
Technical problem to be solved in the utility model be to provide a kind of can be according to the circuit structure of adjusting the display brightness of display device a little less than the environmental light intensity automatically.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of brightness regulating circuit and have the display device of described brightness regulating circuit comprises:
The surround lighting induction module, induction current environment luminous intensity also changes into the corresponding strength value;
Computing module receives the current environment light intensity value of described surround lighting sensing unit output, and generates the target brightness value of display device according to described current environment light intensity value;
Adjusting module receives the target brightness value that described computing module is exported, and the brightness of display device is adjusted to target brightness value.
Wherein a kind of enforcement structure as described surround lighting induction module includes a sampling module and a comparison module in described surround lighting induction module, described sampling module sampling current environment luminous intensity also changes into the corresponding strength value; Described comparison module to described sampling module continuously the ambient light intensity value of the pre-determined number of output compare, and select to export described computing module in the intensity level of a certain value to as the brightness value of current environment light with certain number of times continous-stable.
Another enforcement structure as described surround lighting induction module includes a sampling module, memory and calculator in described surround lighting induction module, described sampling module sampling current environment luminous intensity also changes into the corresponding strength value; The ambient light intensity value of the described sampling module output of described memory stores; Calculator is asked on average all ambient light intensity values that sampling in cycle time obtains, and exports described mean value to described computing module as current environment light intensity value.
Wherein, in order to simplify circuit structure, described surround lighting induction module can adopt a light sensation integrated chip to realize.
Preferably, described display device is liquid crystal display, for example liquid crystal TV set.
Automatically adjust a little less than adopting display brightness that adjustment circuit structure of the present utility model can realize display device according to environmental light intensity, saved the loaded down with trivial details of user's manual adjustment.
Description of drawings
Fig. 1 is the structured flowchart of an embodiment of display device brightness regulating circuit in the utility model;
Fig. 2 is the structured flowchart of another embodiment of display device brightness regulating circuit in the utility model;
Fig. 3 is the flow chart of an embodiment of display device luminance regulating method in the utility model;
Fig. 4 is the detailed process flow chart of a step of flow process shown in Figure 3;
Fig. 5 is the detailed process flow chart of another step of flow process shown in Figure 3;
Fig. 6 is the detailed process flow chart of another step of flow process shown in Figure 3.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is done explanation in further detail.
With reference to figure 1, Fig. 2, illustrate the structured flowchart of two kinds of embodiment of the display device brightness regulating circuit that the utility model proposes.As shown in Figure 1 and Figure 2, display device brightness regulating circuit 1 comprises:
Surround lighting induction module 10, current environment luminous intensity and obtain the current environment light intensity value is used to sample.Can adopt circuit structure as shown in Figure 1 in described surround lighting induction module 10, comprise a sampling module 101 and a comparison module 102, described sampling module 101 sampling current environment luminous intensities also change into the corresponding strength value; 102 pairs of described sampling modules 101 of described comparison module ambient light intensity value of the pre-determined number of output continuously compare, and select to export as the brightness value of current environment light in the intensity level of a certain value with certain number of times continous-stable; Can also adopt circuit structure as shown in Figure 2, comprise a sampling module 101 and a memory, calculator 103, described sampling module 101 sampling current environment luminous intensities also change into the corresponding strength value; Described memory, calculator 103 are stored the ambient light intensity value of described sampling module 101 outputs, and all ambient light intensity values that sampling in cycle time obtains are asked on average, and described mean value is exported as current environment light intensity value.Wherein, described surround lighting induction module 10 can be the sensitization integrated chip, and for example model is the realizations such as sensitization integrated chip of ISL29001, the photosensitive circuit that can certainly form by discrete component etc., and the utility model is not limited thereto.
Computing unit 11, be used for obtaining the display device target brightness value according to the external environment light intensity value of described surround lighting induction module 10 outputs, it is undertaken correspondingly by resulting stable ambient light intensity value in the described surround lighting induction module 10 and brightness being adjusted mapping relations, so just obtains a target brightness value; The brightness of the current demonstration of described target brightness value and described display device is compared, if equate, then expression need not be adjusted brightness, at this moment, continues to wait for that surround lighting induction module 10 sends stable ambient light intensity value; If unequal, then described target brightness value is sent to following adjustment unit 12.It can be to adjust curve by the brightness that the level and smooth simulation to some definite state points obtains that mapping relations are adjusted in the brightness here, and the one-to-one relationship by ambient light intensity value and target brightness value obtains target brightness value; Perhaps, described brightness is adjusted curve and is adjusted curve for the segmented brightness that obtains by some definite state points, be positioned at certain interval that curve is adjusted in described brightness by determining the current environment light intensity value, thereby correspondence obtains target brightness value.And described brightness adjustment curve all can be followed the variation of described definite state point and be changed.Certainly, also can be to carry out the corresponding target brightness value etc. that obtains here, as long as can be mapped to a target brightness value by stable ambient light intensity value all in protection range of the present utility model with a corresponding form.Wherein, described level and smooth formula or segmented brightness are adjusted curve and can be embodied with the form of function, and described definite state point is predefined have the ambient light intensity value of occurrence and the corresponding points of target brightness value.
Adjustment unit 12 is used for display device brightness is adjusted to target brightness value, and it is by reaching target brightness value to display device brightness with a fixed step size and frequency adjustment.Wherein, described step-length and frequency are preset value, also can be to calculate step-length by adjustment unit 12 by fixedly step number and frequency, promptly step-length=| (target brightness value-current display brightness value) |/fixing step number.More detailed is described below: the target brightness value that adjustment unit 12 obtains the computing unit 11 that receives and the current display brightness value of display device compare, if target brightness value is greater than current brightness value, then increase the display brightness of display device, up to reaching target brightness value with default step-length and frequency.If target brightness value less than current brightness value, then reduces the display brightness value of display device, up to reaching described target brightness value with default step-length and frequency.
Wherein, adjustment unit 12 can be by the backlight adjustment pin of output the PWM waveform with particular duty cycle corresponding with described step-length to liquid crystal display with a certain step-length and frequency to the brightness adjustment of display device, realizes the adjusting of liquid crystal display screen backlight illumination.Certainly, can adopt other any appropriate control signals corresponding with described step-length to come the brightness of other display equipment is regulated, the utility model is not limited to by this yet.
For example, if the display brightness of current display device is 60, object brightness is 80, then can be with default step-length 2, time interval 50ms (being equivalent to provide frequency) refreshes display brightness, promptly increase the display brightness value of display device, up to arriving 80 with this step-length and frequency; Perhaps, by calculating described step-length, suppose that default fixedly step number is 10, then calculate according to described formula: step-length=| (80-60) |/10=2, promptly adjusting step-length is 2, with this step-length 2 and the time interval 50ms display brightness of display device is adjusted then.
It should be noted that described step-length and frequency except adopting described fixed step size and frequency, perhaps calculate outside the method for step-length that can also adopt method of fixed step size calculated rate or the like, the utility model is not limited thereto by fixing step number.
With reference to figure 3, illustrate the workflow of an embodiment of a kind of display device luminance regulating method of the utility model.As shown in the figure, may further comprise the steps:
Step 21, sampling current environment luminous intensity, and obtain the current environment light intensity value; Can adopt repeatedly sampling to get the method for stationary value, promptly when sampled value with certain number of times continous-stable during in a certain value, then this is worth and is stationary value, and with this stationary value as the current environment light intensity value.
Step 22 obtains the display device target brightness value according to the current environment light intensity value described in the step 21; Promptly, adjust the target brightness value that mapping relations obtain display device by corresponding brightness according to the resulting ambient light intensity value of step 21.It is that curve is adjusted in the brightness that level and smooth simulation obtains to some definite state points that mapping relations are adjusted in described brightness, and the one-to-one relationship by ambient light intensity value and target brightness value obtains target brightness value; Perhaps, it also can be to adjust curve by the segmented brightness that some definite state points obtain that mapping relations are adjusted in described brightness, be positioned at certain interval that curve is adjusted in described brightness by determining the current environment light intensity value, thereby correspondence obtains target brightness value.And described brightness adjustment curve all can be followed the variation of described definite state point and be changed.
Step 23, the brightness of adjusting display device is to target brightness value; Its adjustment process seamlessly transits process for repeatedly adjusting, and can be that display device reaches target brightness value with a fixed step size and frequency adjustment.Wherein, described step-length and frequency are preset value, also can be to obtain step-length by fixedly step number and frequency computation part, promptly step-length=| (target brightness value-current display brightness value) |/fixing step number.
With reference to figure 4, illustrate the concrete workflow of an embodiment of detailed process of the step 21 of flow process shown in Figure 3.As shown in the figure, may further comprise the steps:
Step 2100, surround lighting is sampled to external world, obtains sampled value, is made as M; Here can adopt the intensity level of the surround lighting of photosensitive circuit sampling current sampling point, and this intensity level is stored among the variable M; Wherein, described photosensitive circuit can be integrated sensitive chip, also the photosensitive circuit that can be made up of discrete component etc.
Step 2101, surround lighting is sampled to external world, obtains sampled value, is made as N; Equally, identical with step 2100, also can adopt the intensity level of the surround lighting of photosensitive circuit sampling current sampling point in this step, and this brightness value is stored among the variable N; Wherein, described photosensitive circuit can be integrated sensitive chip, also the photosensitive circuit that can be made up of discrete component etc.
Step 2102 judges whether M equates with N, if unequal, then execution in step 2103, otherwise execution in step 2104;
Step 2103, variable M is set to the value among the variable N, and turns to step 2101; The value that is about among the variable N is composed to M, turns to step 2101 to carry out then, just continues to receive the external environment light intensity value of next sampled point sampling and continues to carry out subsequent step;
Step 2104, the number of times that the M that adds up equates with N; Here can realize by a counter variable is set, all described counter variable be added up after judging M at every turn and N equating;
Step 2105 judges that whether the number of times that described M equates with N has reached default value, if do not reach preset value, then turns to step 2106 to carry out, otherwise turns to step 2107 to carry out; That is, can be by described counter variable intermediate value and described default value are compared, if the value of counter variable equals described preset value, then execution in step 2107, if the value of counter variable is less than described preset value, then execution in step 2106; Wherein, described preset value is the constant that defines in the program, promptly powers up the back program and loads initialization, a constant will be set as preset value in this process;
Step 2106, variable M is set to the value among the variable N, and turns to step 2101; The value that is about among the variable N is composed to M, turns to step 2101 to carry out then, just continues to receive next external environment luminous intensity sampled value and continues to carry out subsequent step;
Step 2107, the number of times zero clearing that the M that this flow process is added up equates with N; That is to say, can be with described counter variable zero clearing;
Step 2108, the value among this variations per hour M or the variable N is stable external environment light intensity value, and establishes it for S; Because M has reached preset value with the number of times that N equates continuously, therefore just represent that external environment light is stable, at this moment equate with N owing to M, so, wherein any one value of storing is the stable intensity level of external environment light, and preserves this stable external environment light intensity value with variable S;
Step 2109 enters the processing procedure of step 22 among Fig. 3; Promptly, after obtaining stablizing the external environment light intensity value, just entered into that Fig. 3 step 22 is described to obtain the computational process of target brightness value according to this stationary value, the detailed description that its follow-up concrete process can refer step 22, for example following embodiment shown in Figure 5.
With reference to figure 5, illustrate the concrete workflow of an embodiment of detailed process of the step 22 of flow process shown in Figure 3.As shown in the figure, in the present embodiment, the detailed process of just described step 2109 may further comprise the steps:
Step 2200, stable external environment light intensity value in the receiving step 21; Be resulting stable external environment light intensity value, the just value of being stored among the variable S in the receiving step 2108;
Step 2201 is adjusted mapping relations according to described S value corresponding brightness and is obtained target brightness value; Wherein, it can be to adjust curve by the brightness that the level and smooth simulation of some state points of determining obtains that mapping relations are adjusted in described brightness, by with the corresponding target brightness value that obtains of described S value with this curve, the state point of determining described here is meant that described brightness adjusts the point that transverse axis value (external environment light intensity value) on the curve and corresponding longitudinal axis value (target brightness value) all have concrete numerical value, for example state point one is external environment light intensity value under the darkroom and corresponding target brightness value thereof, and state point two be external environment light intensity value under the light on indoor daytime and target brightness value of correspondence thereof or the like; It also can be to adjust curve by the segmentation brightness that some state point of determining simulations obtain that mapping relations are adjusted in described brightness, by determining the S value is positioned at which interval that curve is adjusted in described segmentation brightness, thereby correspondence obtains target brightness value, here said definite state point and the above-mentioned state point same meaning of determining, no longer repeat specification; It can also be a form that mapping relations are adjusted in described brightness, obtains target brightness value according to the S value by lookup table.Here curve is adjusted in said level and smooth brightness or segmentation brightness adjustment curve can embody with the form of function, adjust curve or segmentation brightness and adjust the method for curve and can adopt interpolation or fitting method and try to achieve described level and smooth brightness according to described definite state point, for example utilize least square method to come described two curves of match (function) etc., because method multisample utility model emphasis does not lie in this yet, therefore no longer further be illustrated.In addition, described level and smooth brightness is adjusted curve or segmentation brightness and is adjusted curve and change according to the change of described definite state point, this is because the value of in use can the manual amendment described definite state point of user, after these values change like this, simulate according to these values and to obtain curve (function) and also be certain to change thereupon;
Wherein, described definite state point and various brightness are adjusted profile memory in EEPROM (Electrically Erasable Programmable Read-Only Memory, Electrically Erasable Read Only Memory) in, after the user revises the value of state point by menu, described amended value and corresponding change curve write among the described EEPROM by variable, treat to use when start shooting next time;
Step 2202 judges whether the current display brightness value of described target brightness value and display device equates, if equate that then execution in step 2203, if unequal, then execution in step 2204; The starting point of this step is: if the display brightness value of target brightness value that we obtain and current display device equates, so also just there is no need to have adjusted its brightness, say so in a certain sense and can raise the efficiency, also prevented from simultaneously to bring unknown adverse effect for follow-up processing procedure; The current display brightness of described display device can be directly obtained from the demonstration control of display device or memory cell, perhaps in brightness last time adjustment process, store adjusted brightness value, be readily appreciated that, the adjustment brightness value of last time is the current brightness of this display device, and the adjustment brightness value of described last time can be stored among the EEPROM equally;
Step 2203, the initial step that goes to step 21 among Fig. 3 is carried out; In the present embodiment, that is to say that the step 2100 that turns to the described embodiment of Fig. 3 carries out, that is, by judge there is no need to carry out brightness and adjust after, so just, continue from bringing into operation most, just continue sampling external environment light intensity value and then judgement or the like process;
Step 2204 turns to step 23 processing among Fig. 3; That is to say, after judging that target brightness value and current display brightness value are unequal, will enter the process of brightness adjustment so, what detailed process can refer step 23 elaborates for example following embodiment shown in Figure 6.
With reference to figure 6, illustrate the concrete workflow of an embodiment of detailed process of the step 23 of flow process shown in Figure 3.As shown in the figure, in the present embodiment, the detailed process of just described step 2204 may further comprise the steps:
Step 2300 receives the target brightness value in Fig. 3 step 22; In the present embodiment, just receive the target brightness value that obtains embodiment illustrated in fig. 4;
Whether step 2301 judges the current display brightness value of display device greater than described target brightness value, if greater than, then execution in step 2302, otherwise then execution in step 2304;
Step 2302 reduces the display brightness value with default step-length and frequency; For example, default step-length is 4, and object brightness is 60, the current display brightness value of display device is 100, and adjustment cycle 50ms serves as to reduce display brightness at interval with 50ms with step-length 4 then, like this, the display brightness that reduces after 10 times just display device is reduced to target brightness value 60; In addition, described step-length and frequency also can be unfixed, promptly calculate step-length by fixing step number, be step-length=| (target brightness value-current display brightness value) |/fixing step number, for example Yu She fixedly step number is 8, then calculates according to described formula: step-length=| (60-100) |/8=5, promptly adjusting step-length is 5, with this step-length 5 and the time interval (being equivalent to frequency, can be that fix or variable) display brightness of display device is adjusted then; Like this, when adopting default step-length and frequency to reduce the display brightness value, described each preset value can be stored among the EEPROM; Equally, when adopting the scheme of fixing step number, described fixedly step number also can be stored among the EEPROM; These values of storing are in advance all imported setting by the technical staff when the display device brightness adjusting device dispatches from the factory;
Wherein, to adjust can be by output the PWM waveform with particular duty cycle corresponding with described step-length in brightness to display device, this PWM waveform can directly export the brilliance control interface of display device to, perhaps is converted to the brilliance control interface that voltage signal exports display device to by integrating circuit.Described PWM waveform can be by the chip with the controlled PWM waveform of output, and for example MCU generates, and we come the control waveform shape by the value of the related register of change chip; Certainly, can adopt other any appropriate control signals corresponding with described step-length, the utility model is not limited to by this yet;
Step 2303 judges whether the current display brightness of display device has reached described target brightness value, if reached, then execution in step 2306, otherwise execution in step 2302;
Step 2304 increases the display brightness value with default step-length and frequency; For example, default step-length is 4, and object brightness is 100, the current display brightness of display device is 60, and adjustment cycle is 50ms, serves as to increase the display brightness value at interval with 50ms with step-length 4 then, like this, the display brightness value that increases after 10 times just display device increases to target brightness value 100; In addition, as said in the step 2302, described step-length and frequency also can be unfixed, promptly calculate step-length by fixing step number, be step-length=| (target brightness value-current display brightness value) |/fixing step number, relevant for example can analogy refer step 2302 described in;
Like this, when adopting default step-length and frequency to increase the display brightness value, described each preset value can be stored among the EEPROM; Equally, when adopting the scheme of fixing step number, described fixedly step number also can be stored among the EEPROM; These values of storing are in advance all imported setting by the technical staff when the display device brightness adjusting device dispatches from the factory.In addition, to adjust can be by output the PWM waveform with particular duty cycle corresponding with described step-length in brightness to display device, this PWM waveform can directly export the brilliance control interface of display device to, perhaps is converted to the brilliance control interface that voltage signal exports display device to by integrating circuit.Described PWM waveform can be by the chip with the controlled PWM waveform of output, and for example MCU generates, and we come the control waveform shape by the value of the related register of change chip.Certainly, can adopt other any appropriate control signals corresponding with described step-length, the utility model is not limited to by this yet, but relevant for example described in the also analogy refer step 2302.
It should be noted that, step-length described in step 2302 and the step 2304 and frequency are except adopting described fixed step size and frequency, perhaps calculate outside the method for step-length by fixing step number, can also adopt method of fixed step size calculated rate or the like, the utility model is not limited thereto.
Step 2305 judges whether the current display brightness value of display device has reached described target brightness value, if reached, then execution in step 2306, otherwise execution in step 2304;
Step 2306 turns to step 21 execution among Fig. 3; That is, after the display brightness adjustment of display device finished, continuing to external world surround lighting, to carry out monitoring rate right, and each above-mentioned flow process is carried out in circulation.
It should be noted that, only having enumerated the sampled value of external environment luminous intensity in this embodiment only denys stable judgement target as external environment, also can be only to deny stable judgement target as external environment in fact with the periodicity read value of all sampled values of external environment luminous intensity, be that 60ms reads according to the cycle for example to all sampled values, and judge by obtained value of this cycle whether equate continuously with certain number of times, its process is identical with the acquisition process to the stationary value of sampled value described in this embodiment, those of ordinary skills can obtain by this embodiment is carried out simple analogy, therefore no longer are explained in detail.
Need to prove in addition, said display device can be a television set in the utility model, and for example LCD TV etc. also can be computer display (comprising CRT type or liquid crystal type), perhaps display screen of mobile phone, PDA etc. or the like, the utility model is not limited thereto.
Above disclosed only is a kind of preferred embodiment of the utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.

Claims (10)

1. a brightness regulating circuit is characterized in that: comprise
The surround lighting induction module, induction current environment luminous intensity also changes into the corresponding strength value;
Computing module receives the current environment light intensity value of described surround lighting sensing unit output, and generates the target brightness value of display device according to described current environment light intensity value;
Adjusting module receives the target brightness value that described computing module is exported, and the brightness of display device is adjusted to target brightness value.
2. brightness regulating circuit according to claim 1 is characterized in that: include a sampling module and a comparison module in described surround lighting induction module, described sampling module sampling current environment luminous intensity also changes into the corresponding strength value; Described comparison module to described sampling module continuously the ambient light intensity value of the pre-determined number of output compare, and select to export described computing module in the intensity level of a certain value to as the brightness value of current environment light with certain number of times continous-stable.
3. brightness regulating circuit according to claim 1 is characterized in that: include a sampling module, memory and calculator in described surround lighting induction module, described sampling module sampling current environment luminous intensity also changes into the corresponding strength value; The ambient light intensity value of the described sampling module output of described memory stores; Calculator is asked on average all ambient light intensity values that sampling in cycle time obtains, and exports described mean value to described computing module as current environment light intensity value.
4. according to claim 2 or 3 described brightness regulating circuits, it is characterized in that: described surround lighting induction module is a light sensation integrated chip.
5. brightness regulating circuit according to claim 1 is characterized in that: described display device is a LCD.
6. the display device with brightness regulating circuit is characterized in that: comprise
The surround lighting induction module, induction current environment luminous intensity also changes into the corresponding strength value;
Computing module receives the current environment light intensity value of described surround lighting sensing unit output, and generates the target brightness value of display device according to described current environment light intensity value;
Adjusting module receives the target brightness value that described computing module is exported, and the brightness of display device is adjusted to target brightness value.
7. display device according to claim 6 is characterized in that: include a sampling module and a comparison module in described surround lighting induction module, described sampling module sampling current environment luminous intensity also changes into the corresponding strength value; Described comparison module to described sampling module continuously the ambient light intensity value of the pre-determined number of output compare, and select to export described computing module in the intensity level of a certain value to as the brightness value of current environment light with certain number of times continous-stable.
8. display device according to claim 6 is characterized in that: include a sampling module, memory and calculator in described surround lighting induction module, described sampling module sampling current environment luminous intensity also changes into the corresponding strength value; The ambient light intensity value of the described sampling module output of described memory stores; Calculator is asked on average all ambient light intensity values that sampling in cycle time obtains, and exports described mean value to described computing module as current environment light intensity value.
9. according to claim 7 or 8 described display devices, it is characterized in that: described surround lighting induction module is a light sensation integrated chip.
10. display device according to claim 6 is characterized in that: described display device is a liquid crystal TV set.
CNU2007200248375U 2007-07-09 2007-07-09 Brightness control circuit and display device provided with the circuit Expired - Fee Related CN201063938Y (en)

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CN102404440A (en) * 2010-09-17 2012-04-04 联芯科技有限公司 Method and device automatically adjusting backlight luminance
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CN104715731A (en) * 2015-03-11 2015-06-17 青岛海信电器股份有限公司 Screen brightness adjustment method and device and liquid crystal display device
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CN105719618A (en) * 2016-03-30 2016-06-29 深圳市蓝视界科技有限公司 Method for saving energy by means of automatically adjusting brightness of mobile phone screen
CN105845099A (en) * 2015-01-15 2016-08-10 深圳市科曼医疗设备有限公司 Screen brightness display method and device
CN106814520A (en) * 2015-12-01 2017-06-09 上海傲蕊光电科技有限公司 A kind of lamp light control method for image documentation equipment
CN106851007A (en) * 2017-02-28 2017-06-13 惠州Tcl移动通信有限公司 A kind of method and system for adjusting screen backlight
WO2017143858A1 (en) * 2016-02-25 2017-08-31 广州视源电子科技股份有限公司 Dynamic backlight adjustment method and apparatus
CN108417168A (en) * 2018-02-07 2018-08-17 深圳市可可卓科科技有限公司 The method and car-mounted terminal taken over seamlessly based on ray machine auto brightness
CN108597456A (en) * 2018-04-03 2018-09-28 北京小米移动软件有限公司 Back light brightness regulating method and device
CN109862673A (en) * 2017-11-30 2019-06-07 深圳Tcl新技术有限公司 A kind of method, apparatus and storage medium of the standby lamp brightness of intelligent control
CN112885310A (en) * 2021-01-25 2021-06-01 北京欧铼德微电子技术有限公司 Driving method and device and electronic equipment
CN117938996A (en) * 2023-12-28 2024-04-26 荣耀终端有限公司 Method for detecting ambient light and electronic device

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CN101872597A (en) * 2010-07-21 2010-10-27 福建捷联电子有限公司 Intelligent luminance control induction method
CN102404440A (en) * 2010-09-17 2012-04-04 联芯科技有限公司 Method and device automatically adjusting backlight luminance
CN102404440B (en) * 2010-09-17 2014-01-15 联芯科技有限公司 Method and device automatically adjusting backlight luminance
CN102088630A (en) * 2011-01-20 2011-06-08 中山大学 System and method for changing visual effect of digital television
US9361822B2 (en) 2011-11-09 2016-06-07 Apple Inc. Color adjustment techniques for displays
CN103106887A (en) * 2011-11-09 2013-05-15 苹果公司 Color adjustment techniques for displays
CN103106887B (en) * 2011-11-09 2015-09-02 苹果公司 For the color adaptation technology of display
CN103077684A (en) * 2013-01-23 2013-05-01 京东方科技集团股份有限公司 Backlight adjusting method, device and display screen
CN103077684B (en) * 2013-01-23 2015-09-16 京东方科技集团股份有限公司 A kind of backlight adjusting method, device and display screen
CN104347036A (en) * 2013-08-08 2015-02-11 联想(北京)有限公司 Information processing method and electronic equipment
CN104347036B (en) * 2013-08-08 2017-12-26 联想(北京)有限公司 A kind of information processing method and electronic equipment
CN105845099A (en) * 2015-01-15 2016-08-10 深圳市科曼医疗设备有限公司 Screen brightness display method and device
CN105845099B (en) * 2015-01-15 2018-12-18 深圳市科曼医疗设备有限公司 Screen intensity display methods and device
CN104715731B (en) * 2015-03-11 2017-03-22 青岛海信电器股份有限公司 Screen brightness adjustment method and device and liquid crystal display device
CN104715731A (en) * 2015-03-11 2015-06-17 青岛海信电器股份有限公司 Screen brightness adjustment method and device and liquid crystal display device
CN104992692A (en) * 2015-08-05 2015-10-21 广东欧珀移动通信有限公司 Method and device for adjusting screen brightness of intelligent terminal and intelligent terminal
CN105355188A (en) * 2015-11-23 2016-02-24 广东欧珀移动通信有限公司 Method and system for adjusting screen brightness of mobile terminal and mobile terminal
CN106814520A (en) * 2015-12-01 2017-06-09 上海傲蕊光电科技有限公司 A kind of lamp light control method for image documentation equipment
CN105405429A (en) * 2015-12-11 2016-03-16 Tcl移动通信科技（宁波）有限公司 Mobile terminal, ambient light dynamic induction control method, ambient light dynamic induction control system
CN105405429B (en) * 2015-12-11 2019-03-26 Tcl移动通信科技（宁波）有限公司 A kind of mobile terminal and its environment photokinesis induction control method, system
WO2017143858A1 (en) * 2016-02-25 2017-08-31 广州视源电子科技股份有限公司 Dynamic backlight adjustment method and apparatus
CN105719618A (en) * 2016-03-30 2016-06-29 深圳市蓝视界科技有限公司 Method for saving energy by means of automatically adjusting brightness of mobile phone screen
CN106851007A (en) * 2017-02-28 2017-06-13 惠州Tcl移动通信有限公司 A kind of method and system for adjusting screen backlight
CN109862673A (en) * 2017-11-30 2019-06-07 深圳Tcl新技术有限公司 A kind of method, apparatus and storage medium of the standby lamp brightness of intelligent control
CN108417168A (en) * 2018-02-07 2018-08-17 深圳市可可卓科科技有限公司 The method and car-mounted terminal taken over seamlessly based on ray machine auto brightness
CN108597456A (en) * 2018-04-03 2018-09-28 北京小米移动软件有限公司 Back light brightness regulating method and device
CN112885310A (en) * 2021-01-25 2021-06-01 北京欧铼德微电子技术有限公司 Driving method and device and electronic equipment
CN112885310B (en) * 2021-01-25 2022-05-03 北京欧铼德微电子技术有限公司 Driving method and device and electronic equipment
CN117938996A (en) * 2023-12-28 2024-04-26 荣耀终端有限公司 Method for detecting ambient light and electronic device

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