CN102508517A - Method and device for realizing sight line distance measurement and luminance automatic control on laptop - Google Patents
Method and device for realizing sight line distance measurement and luminance automatic control on laptop Download PDFInfo
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- CN102508517A CN102508517A CN2011103270545A CN201110327054A CN102508517A CN 102508517 A CN102508517 A CN 102508517A CN 2011103270545 A CN2011103270545 A CN 2011103270545A CN 201110327054 A CN201110327054 A CN 201110327054A CN 102508517 A CN102508517 A CN 102508517A
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Abstract
The invention relates to a method and a device for realizing sight line distance measurement and luminance automatic control on a laptop. The method is characterized by comprising the following steps: providing a detection signal processing unit connected with a central processing unit (CPU) of the laptop; providing a distance-measurement sensing module, wherein the module collects the distance information of a user and the laptop; when the distance is less than a guarding distance set by the user, controlling a loudspeaker of the laptop by the CPU, and reminding the user in a menu display mode; providing a photoelectric sensing module, wherein the module collects the luminance information of the environment; comparing the luminance information with a luminance value set by the user; automatically controlling a backlight driving circuit of the laptop by the CPU; and controlling the luminance of a display screen. According to the method and the device, a sound is given out to remind and warn the user when the user is too close to the computer to use the computer. Meanwhile, automatic detection can be carried out with the method according to the environment variation to enter an optimal mode luminance range so as to roundly protect the eyesight of the human body. The device has the advantages of simple structure and better practical value.
Description
Technical field
The present invention relates to the notebook computer technical field, realize method and device that the brightness automatic control is held concurrently in the sight line range finding on particularly a kind of laptop computer.
Background technology
Notebook computer is to use more at present, and popularization is very high.User's age bracket is cross over old age from teenager.And teenager user crowd trend is very high, and it is also very long that they stared at the screen time in one day.If the user is too near to screen, the long-term use down can cause eye fatigue, even myopia.In addition, notebook computer is because of causing screen too bright or too during dark background under the ambient brightness changing condition, also can have a strong impact on user's eyesight and healthy.
Summary of the invention
In view of this; The present invention provides method and the device of realizing on a kind of laptop computer that the brightness automatic control is held concurrently in the sight line range finding, can realize the warning value according to user's setting, reminds user and laptop computer to keep at a distance; And can regulate brightness of display screen automatically according to ambient brightness, protection user's eyesight.
Method of the present invention adopts following scheme to realize: realize the method for the double brightness automatic control of sight line range finding on a kind of laptop computer, it is characterized in that, comprising:
Provide a detection signal processing unit to be connected with the CPU of said laptop computer;
One range finding induction module is provided, and this module is gathered the range information of user and said laptop computer, and when the warning distance that this distance is set less than the user, said CPU then controls the loudspeaker of this laptop computer and reminds the user with the mode that menu shows;
One optoelectronic induction module is provided, and this module is gathered the monochrome information of environment, and compares with brightness value that the user sets, controls the backlight drive circuit of this laptop computer, the brightness of control display screen automatically by said CPU.
Further, said range finding induction module adopts the ultrasonic ranging sensor, by said CPU this ultrasound wave is received the used Time Calculation user's head and the distance of laptop computer screen from being transmitted into reflection.
Device of the present invention adopts following scheme to realize: a kind of have a sight protectio notebook computer that the brightness automatic control is held concurrently in the sight line range finding, comprises the CPU of notebook computer and by control circuit in the periphery of this CPU control; It is characterized in that: described CPU is connected with the detection signal processing unit, and described detection signal processing unit is connected with range finding induction module and optoelectronic induction module.
Further, described detection signal processing unit comprises:
One compares amplifying circuit, and its output terminal is connected with said CPU;
One photoelectric switching circuit, its input end is connected with described optoelectronic induction module, and output terminal is connected with described relatively amplifying circuit; One range finding change-over circuit, its input end is connected with described range finding induction module, and output terminal is connected with described relatively amplifying circuit; And
One sample circuit, the input end of this sample circuit is connected with said CPU, and output terminal is connected with described relatively amplifying circuit.
Further, said range finding induction module is a ultrasonic ranging sensor.
The present invention can lean on when too closely using computer the user; The sound prompting warning users, it can also detect and get into optimal mode brightness range, the eye eyesight of general protection human body automatically according to environmental change simultaneously; Circuit structure is simple, has good practical values.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the embodiment of the invention.
Fig. 2 is the schematic block circuit diagram of another embodiment of the present invention.
Embodiment
Present embodiment provides the method that realizes the double brightness automatic control of sight line range finding on a kind of laptop computer, comprising: provide a detection signal processing unit to be connected with the CPU of said laptop computer; One range finding induction module is provided, and this module is gathered the range information of user and said laptop computer, and when the warning distance that this distance is set less than the user, said CPU then controls the loudspeaker of this laptop computer and reminds the user with the mode that menu shows; One optoelectronic induction module is provided, and this module is gathered the monochrome information of environment, and compares with brightness value that the user sets, controls the backlight drive circuit of this laptop computer, the brightness of control display screen automatically by said CPU.Said range finding induction module adopts the ultrasonic ranging sensor, by said CPU this ultrasound wave is received the used Time Calculation user's head and the distance of laptop computer screen from being transmitted into reflection.
In order to let those skilled in the art better understand the present invention, the present invention is further specified below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, present embodiment provides a kind of sight protectio notebook computer that the brightness automatic control is held concurrently in sight line range finding that has, and comprises the CPU of notebook computer and by control circuit in the periphery of this CPU control; Described CPU is connected with the detection signal processing unit, and described detection signal processing unit is connected with range finding induction module and optoelectronic induction module.
Concrete, seeing also Fig. 2, described detection signal processing unit comprises: one compares amplifying circuit, and its output terminal is connected with said CPU; One photoelectric switching circuit, its input end is connected with described optoelectronic induction module, and output terminal is connected with described relatively amplifying circuit; One range finding change-over circuit, its input end is connected with described range finding induction module, and output terminal is connected with described relatively amplifying circuit; And a sample circuit, the input end of this sample circuit is connected with said CPU, and output terminal is connected with described relatively amplifying circuit.
In order to let those skilled in the art better understand present embodiment; Do further introduction in the face of the principle of work of present embodiment down: the optoelectronic induction module changes according to ambient brightness gathers light signal; And convert light signal to electrical signal transfer and carry out electric signal to the detection signal processing unit and relatively amplify; The CPU of notebook computer controls the backlight drive circuit of back level according to the signal of relatively amplifying circuit output, thereby realizes the automatic brightness adjustment of notebook computer display screen.
And the range finding induction module mainly obtains user's positional information relative with notebook computer; The information such as position distance whether user and user are arranged like notebook computer the place ahead; And this information is sent to the CPU of notebook computer through the detection signal processing unit processes; The fiducial value that this CPU is provided with according to system, control loudspeaker give a warning sound and on display screen the display alarm user be on the alert at present.The user is in the middle of long-time the use, and the range sensor of range finding induction module can uninterruptedly be gathered range data.
Here be noted that control circuit is the data message amount that special disposal CPU transmits in the notebook of the present invention periphery, its effect comprises conversion of signals, network communication, voice output, image Presentation Function, and also promising CPU provides clock signal etc.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (5)
1. realize the hold concurrently method of brightness automatic control of sight line range finding on the laptop computer, it is characterized in that, comprising:
Provide a detection signal processing unit to be connected with the CPU of said laptop computer;
One range finding induction module is provided, and this module is gathered the range information of user and said laptop computer, and when the warning distance that this distance is set less than the user, said CPU then controls the loudspeaker of this laptop computer and reminds the user with the mode that menu shows;
One optoelectronic induction module is provided, and this module is gathered the monochrome information of environment, and compares with brightness value that the user sets, controls the backlight drive circuit of this laptop computer, the brightness of control display screen automatically by said CPU.
2. realize the method for the double brightness automatic control of sight line range finding on the laptop computer according to claim 1; It is characterized in that: said range finding induction module adopts the ultrasonic ranging sensor, by said CPU this ultrasound wave is received the used Time Calculation user's head and the distance of laptop computer screen from being transmitted into reflection.
3. one kind has the sight protectio notebook computer that the brightness automatic control is held concurrently in sight line range finding, comprises the CPU of notebook computer and by control circuit in the periphery of this CPU control; It is characterized in that: described CPU is connected with the detection signal processing unit, and described detection signal processing unit is connected with range finding induction module and optoelectronic induction module.
4. the sight protectio notebook computer with the double brightness automatic control of sight line range finding according to claim 1, it is characterized in that: described detection signal processing unit comprises:
One compares amplifying circuit, and its output terminal is connected with said CPU;
One photoelectric switching circuit, its input end is connected with described optoelectronic induction module, and output terminal is connected with described relatively amplifying circuit; One range finding change-over circuit, its input end is connected with described range finding induction module, and output terminal is connected with described relatively amplifying circuit; And
One sample circuit, the input end of this sample circuit is connected with said CPU, and output terminal is connected with described relatively amplifying circuit.
5. according to claim 3 or 4 described sight protectio notebook computers with the double brightness automatic control of sight line range finding, it is characterized in that: said range finding induction module is a ultrasonic ranging sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011103270545A CN102508517A (en) | 2011-10-25 | 2011-10-25 | Method and device for realizing sight line distance measurement and luminance automatic control on laptop |
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| CN2011103270545A CN102508517A (en) | 2011-10-25 | 2011-10-25 | Method and device for realizing sight line distance measurement and luminance automatic control on laptop |
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Cited By (7)
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| CN103516875A (en) * | 2012-06-25 | 2014-01-15 | 百度在线网络技术（北京）有限公司 | Method for remising user of mobile terminal and mobile terminal |
| CN105047178A (en) * | 2015-08-19 | 2015-11-11 | 山东大学 | Device and method for saving electricity of display screen based on ultrasonic detection and brightness synchronization tracking |
| CN105072470A (en) * | 2015-09-10 | 2015-11-18 | 湖南科技大学 | Ultrasonic ranging-based television screen intelligent dimming device and method |
| WO2016041450A1 (en) * | 2014-09-19 | 2016-03-24 | 阿里巴巴集团控股有限公司 | Screen control method and apparatus |
| CN106454516A (en) * | 2016-10-24 | 2017-02-22 | 惠科股份有限公司 | Circuit capable of automatically adjusting television brightness and television |
| CN108283491A (en) * | 2018-01-24 | 2018-07-17 | 京东方科技集团股份有限公司 | Display panel and display device |
| WO2021208114A1 (en) * | 2020-04-13 | 2021-10-21 | 深圳市融纳海川科技有限公司 | Electronic display apparatus capable of protecting eyesight |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103516875A (en) * | 2012-06-25 | 2014-01-15 | 百度在线网络技术（北京）有限公司 | Method for remising user of mobile terminal and mobile terminal |
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| CN105072470A (en) * | 2015-09-10 | 2015-11-18 | 湖南科技大学 | Ultrasonic ranging-based television screen intelligent dimming device and method |
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Application publication date: 20120620 |