CN2554718Y - Screen device with electric-saving and eye protection device - Google Patents
Screen device with electric-saving and eye protection device Download PDFInfo
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- CN2554718Y CN2554718Y CN 02239351 CN02239351U CN2554718Y CN 2554718 Y CN2554718 Y CN 2554718Y CN 02239351 CN02239351 CN 02239351 CN 02239351 U CN02239351 U CN 02239351U CN 2554718 Y CN2554718 Y CN 2554718Y
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- photoresistance
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Abstract
The utility model provides a screen device of a power saving and eye protecting device, and is mainly a screen device with a liquid crystal display (LCD). The device can be applied to hand held devices such as a personal digital assistant, a wed pad and so on. A controlling circuit is arranged in the screen device, the controlling circuit is electrically connected with the display and is used to control the brightness of the display, a light sensitive resistor is arranged adjacent to the display, the resistance value of the light sensitive resistor can change with the relative strength of a light ray, thereby, the environmental brightness can be identified, and the light sensitive resistor is connected to the controlling circuit, and the controlling circuit is formed by at least one analog/digital converter being connected with a central processing unit; the resistance value of the light sensitive resistor can change with the difference of the adjacent environmental brightness through the components, the brightness of the display is controlled through the controlling circuit, so as to obtain better display effect, and the power saving and eye protecting function is realized.
Description
Technical field
The utility model relates to a kind of screen apparatus with electric-saving and eye protection device, particularly relates to a kind of device of adjusting screen-picture by photoresistance automatically.
Background technology
LCD belongs to a kind of plane display technique, it is widely used in various portable computers such as notebook, personal digital assistant, or even the networking plate (web pad) that develops recently, make on market, almost to replace traditional cathode ray tube (CRT) display soon.The LCD biggest advantage is that its volume and weight decline to a great extent, and relatively because of must not the electron gun acceleration mechanism, so the extension, rear is very short, display mirror be not thick yet, has considerable advantage really.
But, its shortcoming is to be that display effect is relatively poor, comprise and show that contrast is lower, aspects such as the visual angle is narrower, therefore some part is still difficult reaches the display effect that similar cathode-ray tube display possesses, particularly when the operation of LCD environment is in high brightness, the easier inferior position that shows on the contrast that highlights, promptly, the display effect of LCD and operating environment have great relevance, though, many LCD all have the function of automatic adjustment brightness and contrast, but they are to adjust according to picture displayed mostly, and must start this function by button, therefore the user is in order to reach preferable display effect, often must flexibly adjust the setup parameter of LCD with the operating environment of different brightness, when ambient brightness is higher, then heighten it and show contrast or brightness, so that obtain better visual effect, when ambient brightness is dark, then turn down it and show contrast or brightness, so that saving power consumption has obviously caused the trouble in user's practical operation.
Summary of the invention
Fundamental purpose of the present utility model is to provide a kind of screen apparatus with electric-saving and eye protection device, by the technology that imports photoresistance, can adjust the display brightness of LCD automatically according to the variation of screen apparatus surrounding environment brightness.
Another purpose of the present utility model is to provide a kind of screen apparatus with electric-saving and eye protection device, has solved under the environment of Different Light, and screen apparatus is crossed bright or dark excessively power wastage that causes and eye injury, and reaches the effect of power saving and protection eyes.
Above-mentioned purpose of the present utility model is achieved in that a kind of screen apparatus with electric-saving and eye protection device, has a display; Wherein also comprise an electric-saving and eye protection device, described electric-saving and eye protection device comprises:
At least one photoresistance is adjacent to the screen of described display; And
One control circuit, in be located at described screen apparatus, be to connect to form, and described analog/digital converter is connected in described photoresistance by an at least one analog/digital converter and a central processing unit, described central processing unit is connected to described display;
Whereby, during near the described screen apparatus light grow, the resistance of described photoresistance can diminish, make the voltage that inputs to analog/digital converter uprise, and notify described central processing unit, the data of described analog/digital converter output and the default value of internal memory are compared, send brighter picture to control described display; When near the light the described screen apparatus dies down; it is big that the resistance of described photoresistance can become; the feasible voltage step-down that inputs to analog/digital converter; and notify described central processing unit; the data of described analog/digital converter output and the default value of internal memory are compared; send darker picture to control described display, and reach the effect of power saving and protection eyes.
Screen apparatus with electric-saving and eye protection device described in the utility model, wherein said electric-saving and eye protection device has a plurality of photoresistance, be adjacent to the screen of described display respectively, described control circuit has a plurality of analog/digital converters, and described a plurality of analog/digital converter respectively correspondence be connected in described a plurality of photoresistance;
Whereby, during near the described screen apparatus light grow, the resistance of described photoresistance can diminish, make the voltage that inputs to analog/digital converter uprise, open and know described central processing unit, a plurality of data of this analog/digital converter output are compared, send brighter picture to control described display; When near the light the described screen apparatus dies down; it is big that the resistance of described photoresistance can become; the feasible voltage step-down that inputs to analog/digital converter; and notify described central processing unit; a plurality of data of this analog/digital converter output are compared; send darker picture to control described display, and reach the effect of power saving and protection eyes.
Screen apparatus with electric-saving and eye protection device described in the utility model, wherein said screen apparatus are the screen apparatus of personal digital assistant or networking plate.
Screen apparatus with electric-saving and eye protection device described in the utility model, wherein said display is a LCD.
A kind of electric-saving and eye protection device, be arranged at screen apparatus, wherein, comprise at least one photoresistance, at least one analog/digital converter and a central processing unit, described photoresistance is connected to described analog/digital converter, and the output terminal of described analog/digital converter is connected to described central processing unit, and described photoresistance is adjacent to the screen of described screen apparatus, and described central processing unit also is electrically connected to described screen apparatus; Whereby, during near the described screen light grow, the resistance of described photoresistance can diminish, make the voltage that inputs to analog/digital converter uprise, and notify described central processing unit, the data of described analog/digital converter output and the default value of internal memory are compared, send brighter picture to control described screen; When near the light the described screen dies down; it is big that the resistance of described photoresistance can become; the feasible voltage step-down that inputs to analog/digital converter; and notify described central processing unit; the data of described analog/digital converter output and the default value of internal memory are compared; send darker picture to control this screen, and reach the effect of power saving and protection eyes.
Electric-saving and eye protection device described in the utility model, wherein, described electric-saving and eye protection device has a plurality of photoresistance and a plurality of analog/digital converter, described a plurality of photoresistance correspondence respectively is connected to described a plurality of analog/digital converter, and the output terminal of described a plurality of analog/digital converters is connected to described central processing unit respectively, and described a plurality of photoresistance is adjacent to the screen of described screen apparatus respectively; Whereby, during near the described screen light grow, the resistance of described photoresistance can diminish, make the voltage that inputs to analog/digital converter uprise, and notify described central processing unit, a plurality of data of this analog/digital converter output are compared, send brighter picture to control described screen; When near the light the described screen dies down; it is big that the resistance of described photoresistance can become; the feasible voltage step-down that inputs to analog/digital converter; and notify described central processing unit; a plurality of data of this analog/digital converter output are compared; send darker picture to control this screen, and reach the effect of power saving and protection eyes.
Electric-saving and eye protection device described in the utility model, wherein, described screen apparatus is the screen apparatus with LCD of personal digital assistant or networking plate.
According to the screen apparatus with electric-saving and eye protection device described in the utility model, comprise a display, at least one photoresistance and a control circuit, wherein, this photoresistance is adjacent to this display, be built in this screen apparatus in this control circuit, be to be connected to form by an at least one analog/digital converter and a central processing unit, and this analog/digital converter is connected to this photoresistance, this central processing unit is connected to this display; Whereby, during near this screen apparatus light grow, the resistance of this photoresistance can diminish, make this voltage that inputs to analog/digital converter uprise, and notify this central processing unit, the data of this analog/digital converter output and the default value of internal memory are compared, send brighter picture to control this display; When near the light this screen apparatus dies down; it is big that the resistance of this photoresistance can become; make this input to the voltage step-down of analog/digital converter; and notify this central processing unit; the data of this analog/digital converter output and the default value of internal memory are compared; perhaps a plurality of data with this analog/digital converter output compare, and send darker picture to control this display, and reach the effect of power saving and protection eyes.
Description of drawings
Fig. 1 is the outside drawing of the utility model first embodiment;
Fig. 2 is the internal circuit synoptic diagram of the utility model first embodiment;
Fig. 3 is the outside drawing of the utility model second embodiment;
Fig. 4 is the internal circuit synoptic diagram of the utility model second embodiment.
Embodiment
For enabling further to understand the utility model is to reach technology, means and the effect that predetermined purpose is taked, see also following about detailed description of the present utility model and accompanying drawing, believe the purpose of this utility model, feature and characteristics, go deep into and concrete understanding when getting one thus, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited.
Seeing also shown in Figure 1ly, is the outside drawing of the utility model first embodiment.The utility model is a kind of screen apparatus with electric-saving and eye protection device, is mainly a screen apparatus 1 with LCD 10, and it can be applicable to personal digital assistant, and networking plate handheld apparatus such as (web pad), icon are for being used in the embodiment of networking plate.This screen apparatus 1 inside also is provided with a control circuit 11 (comparatively detailed introduction is arranged among Fig. 2), the brightness that it is electrically connected on this display 10 and is used for controlling this display 10, contiguous these display 10 upper end middle bodies also are embedded with a slotted eye (figure slightly), for the photosensory assembly of placing photoresistance 12 grades, also can be arranged on the appropriate location of this screen apparatus 1 one side relative with the user, the resistance of this photoresistance 12 can change with light is strong and weak, so but the identification surrounding brightness, it is connected to this control circuit 11 order; Other, these photoresistance 12 peripheries are the printing opacity body of cover cap one protective effect (figure slightly) in addition.
Please refer to shown in Figure 2, it is the internal circuit synoptic diagram of the utility model first embodiment, has photoresistance 12 (assembly is numbered CDS1), and current-limiting resistance R1, analog/digital converter ADC1, the control circuit 11 that assemblies such as central processing unit U1 connect to form, and the end of photoresistance CDS1 is connected to fixed voltage source Vcc, the other end then is connected with current-limiting resistance R1 one end and analog/digital converter ADC1 input end respectively by lead, and current-limiting resistance R1 other end ground connection, analog/digital converter ADC1 output terminal then is connected to central processing unit U1, and the central processing unit U1 other end also is connected to this display 10 via circuit.
Composition by above-mentioned member, can receive near this screen apparatus 1 ambient light by photoresistance CDS1, when the light grow, the resistance of photoresistance CDS1 can diminish, thereby allow the voltage that inputs to analog/digital converter ADC1 uprise, relend and help analog/digital converter ADC1 notice central processing unit U1, allow central processing unit U1 that the data of analog/digital converter ADC1 output and the default value of internal memory are compared, after judging these display 10 palpus blasts how much, progressively strengthen the brightness in lamp source in this display 10 again, and reach the effect of protection eyes; When light dies down; it is big that the resistance of photoresistance CDS1 can become; allow the voltage step-down that is input to analog/digital converter ADC1 input end; relend and help analog/digital converter ADC1 notice central processing unit U1; allow central processing unit U1 that the data of analog/digital converter ADC1 output and the default value of internal memory are compared; to judge that how much brightness these display 10 palpuses reduce, and progressively reduce the brightness in lamp sources in this display 10 again, and reach the effect of power saving and protection eyes.
In view of the above, can change the brightness of display 10,, and allow the user under preferable visual condition, watch the shown content of this display 10 with service time of effective raising battery and protection eyes according to ambient brightness.
Previous embodiment is to adopt single photoresistance 12 to come the light power of sensitive context, also can utilize a plurality of photoresistance 12 to detect the ambient light power of diverse location, so as to obtaining mean flow rate.As shown in Figure 3, it is the outside drawing of the utility model second embodiment, it is screen apparatus 1 with a LCD 10 patterns, except that still being provided with a control circuit 11, inside is electrically connected on this display 10, contiguous these both sides, display 10 upper end respectively are embedded with a slotted eye, for the photosensory assembly of placing photoresistance 12 ' etc., thus two photoresistance 12 ' had in order to the light intensity on the induction diverse location, and be connected to this control circuit 11 respectively; In addition, this photoresistance 12 ' the peripheral printing opacity body (figure slightly) that also can distinguish cover cap one protective effect.
Continuous is the internal circuit synoptic diagram of the utility model second embodiment with reference to shown in Figure 4, has photoresistance 12 ' (assembly is numbered CDS1, CDS2), and current-limiting resistance R1, R2, analog/digital converter ADC1, ADC2.The control circuit 11 ' that assemblies such as central processing unit U1 connect to form, and the end of photoresistance CDS1 is connected to fixed voltage source Vcc, the other end then is connected with current-limiting resistance R1 one end and analog/digital converter ADC1 input end respectively by lead, and current-limiting resistance R1 other end ground connection, analog/digital converter ADC1 output terminal then is connected to central processing unit U1, simultaneously, the end of photoresistance CDS2 is connected to fixed voltage source Vcc, the other end then is connected with current-limiting resistance R2 one end and analog/digital converter ADC2 input end respectively by lead, and current-limiting resistance R2 other end ground connection, analog/digital converter ADC2 output terminal also is connected to central processing unit U1, and this central processing unit U1 other end then is connected to this display 10 via circuit.
Composition by above-mentioned member, can be respectively by photoresistance CDS1, CDS2 receives near the ambient light this screen apparatus 1, when the light grow, this two photoresistance CDS1, the resistance of CDS2 can diminish, thereby allow and input to analog/digital converter ADC1, the voltage of ADC2 uprises, relend and help analog/digital converter ADC1, ADC2 notice central processing unit U1, allow central processing unit U1 with analog/digital converter ADC1, two groups of data of ADC2 output compare, after judging these display 10 palpus blasts how much, progressively strengthen the brightness in lamp source in this display 10 again, and reach the effect of protection eyes; When light dies down; it is big that the resistance of photoresistance CDS1, CDS2 can become; allow the voltage step-down that is input to analog/digital converter ADC1, ADC2 input end; relend and help analog/digital converter ADC1, ADC2 notice central processing unit U1; allow central processing unit U1 that two groups of data of analog/digital converter ADC1, ADC2 output are compared; to judge that how much brightness these display 10 palpuses reduce, and progressively reduce the brightness in lamp sources in this display 10 again, and reach the effect of power saving and protection eyes.
In view of the above; can utilize two photoresistance CDS1, CDS2 to reach the purpose of the present ambient brightness of reporting system; allow system can adjust the brightness of this display 10 automatically; replace traditional passive adjustment mode; and the picture of this display 10 can be with the variation of ambient light; automatically be adjusted to comparatively harmonious gradually and can protect the brightness of eyes, no matter promptly indoor environment is dark or bright, screen all can adjust appropriate brightness and contrast automatically.
In addition, the user is when if the setting program that utilizes system itself to provide is selected manual light modulation, and then this central processing unit U1 will ignore the numerical value that this analog/digital converter ADC1 and/or ADC2 send, and only accept the brightness value that the user manually sets.
The above, only be the detailed description and the accompanying drawing of the specific embodiment of one of the utility model the best, and feature of the present utility model is not limited thereto, be not in order to restriction the utility model, all scopes of the present utility model should be as the criterion with claim, all closing in the embodiment of the spirit variation similar of the utility model claim with it, all should be contained in the category of the present utility model, anyly be familiar with this skill person in field of the present utility model, can think easily and variation or modify and all be encompassed in claim of the present utility model.
Claims (7)
1, a kind of screen apparatus with electric-saving and eye protection device has a display; It is characterized in that also comprise an electric-saving and eye protection device, described electric-saving and eye protection device comprises:
At least one photoresistance is adjacent to the screen of described display; And
One control circuit, in be located at described screen apparatus, be to connect to form, and described analog/digital converter is connected in described photoresistance by an at least one analog/digital converter and a central processing unit, described central processing unit is connected to described display.
2, the screen apparatus with electric-saving and eye protection device as claimed in claim 1, it is characterized in that, described electric-saving and eye protection device has a plurality of photoresistance, be adjacent to the screen of described display respectively, described control circuit has a plurality of analog/digital converters, and described a plurality of analog/digital converter respectively correspondence be connected in described a plurality of photoresistance.
3, the screen apparatus with electric-saving and eye protection device as claimed in claim 1 or 2 is characterized in that, described screen apparatus is the screen apparatus of personal digital assistant or networking plate.
4, the screen apparatus with electric-saving and eye protection device as claimed in claim 1 or 2 is characterized in that, described display is a LCD.
5, a kind of electric-saving and eye protection device, be arranged at screen apparatus, it is characterized in that, comprise at least one photoresistance, at least one analog/digital converter and a central processing unit, described photoresistance is connected to described analog/digital converter, and the output terminal of described analog/digital converter is connected to described central processing unit, and described photoresistance is adjacent to the screen of described screen apparatus, and described central processing unit also is electrically connected to described screen apparatus.
6, electric-saving and eye protection device as claimed in claim 5, it is characterized in that, described electric-saving and eye protection device has a plurality of photoresistance and a plurality of analog/digital converter, described a plurality of photoresistance correspondence respectively is connected to described a plurality of analog/digital converter, and the output terminal of described a plurality of analog/digital converters is connected to described central processing unit respectively, and described a plurality of photoresistance is adjacent to the screen of described screen apparatus respectively.
As claim 5 or 6 described electric-saving and eye protection device, it is characterized in that 7, described screen apparatus is the screen apparatus with LCD of personal digital assistant or networking plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02239351 CN2554718Y (en) | 2002-06-21 | 2002-06-21 | Screen device with electric-saving and eye protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02239351 CN2554718Y (en) | 2002-06-21 | 2002-06-21 | Screen device with electric-saving and eye protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2554718Y true CN2554718Y (en) | 2003-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02239351 Expired - Fee Related CN2554718Y (en) | 2002-06-21 | 2002-06-21 | Screen device with electric-saving and eye protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2554718Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104851414A (en) * | 2015-05-05 | 2015-08-19 | 成都上生活网络科技有限公司 | Screen brightness adjustment method |
| CN106356022A (en) * | 2016-10-20 | 2017-01-25 | 南京东恒计量实业有限公司 | Control device and method used for display screen |
-
2002
- 2002-06-21 CN CN 02239351 patent/CN2554718Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104851414A (en) * | 2015-05-05 | 2015-08-19 | 成都上生活网络科技有限公司 | Screen brightness adjustment method |
| CN106356022A (en) * | 2016-10-20 | 2017-01-25 | 南京东恒计量实业有限公司 | Control device and method used for display screen |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |