CN101655723A - Notebook computer capable of adjusting and controlling backlight brightness of keyboard and method for adjusting and controlling same - Google Patents
Notebook computer capable of adjusting and controlling backlight brightness of keyboard and method for adjusting and controlling same Download PDFInfo
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- CN101655723A CN101655723A CN200910190056A CN200910190056A CN101655723A CN 101655723 A CN101655723 A CN 101655723A CN 200910190056 A CN200910190056 A CN 200910190056A CN 200910190056 A CN200910190056 A CN 200910190056A CN 101655723 A CN101655723 A CN 101655723A
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Abstract
The invention relates to a notebook computer capable of adjusting and controlling backlight brightness of a keyboard and a method for adjusting and controlling same. The adjust and control method comprises the following steps: firstly, a photosensor generates a current command value based on the intensity of light around the notebook computer and transmits the current command value to a pulse width modulation generator; secondly, the pulse width modulation generator adjusts a pulse width modulation signal generated by the pulse width modulation generator according to the current command value;thirdly, the current is supplied to a plurality of LED lamps according to the adjusted pulse width modulation signal so that the plurality of LED lamps emit light. By sensing the intensity of light around the notebook computer by the photosensor, the invention achieves the purpose of adjusting the brightness of the LED lamps so that the LED lamps paved below the keyboard automatically adjust thebrightness along with the intensity of light outside. The invention is convenient for users to use the keyboard of the notebook computer conveniently in various lighting environments. The adjustment and control method is not only simple and effective but also reduces electric energy loss to a certain extend, thereby being environment friendly.
Description
Technical field
The present invention relates to a kind of notebook computer, relate in particular to a kind of notebook computer and regulate and control method thereof of adjustable keyboard back light brightness.
Background technology
Along with the fast development of information industry and improving constantly of people's living standard, the application of computer is universal day by day, and particularly notebook computer enjoys the consumer to favor by its distinctive compact, portable characteristics.More and more universal along with notebook computer, people use the probability of notebook computer to increase more under various environment thereupon.When using notebook computer in the environment at insufficient light,, cause inconvenience for the use of notebook computer, so just there is illuminated keyboard to arise at the historic moment often owing to the marking keys symbol that does not see on its keyboard is difficult to accurately knock keyboard.
The illuminated keyboard of existing notebook computer mainly illuminates button by light emitting diode is set as back light in keyboard, people also can be removed in the insufficient light environment distinguish each button, satisfies people's user demand.But, the backlight illumination of the illuminated keyboard of existing notebook computer is generally fixed, can't make corresponding adjusting according to actual needs, even the backlight illumination of illuminated keyboard is also with the same in the environment of its insufficient light in the environment of light, cause power supply energy needn't to waste, be unfavorable for environmental protection, and shorten the service time of cells in notebook computer to a certain extent, make troubles for the use of notebook computer.
This shows that the illuminated keyboard of existing notebook computer still has defective, can't satisfy people's user demand fully, and demand urgently further being improved.In order to solve the problem of the illuminated keyboard that has notebook computer now, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product can not solve the above problems, this obviously is the problem that the anxious desire of relevant dealer solves.
Summary of the invention
The objective of the invention is to, a kind of notebook computer of adjustable keyboard back light brightness is provided, it utilizes pulse-width signal to regulate the brightness of LED lamp, and is simple to operate, can effectively reduce electric energy loss, helps environmental protection.
Another purpose of the present invention is, a kind of regulate and control method of notebook computer of adjustable keyboard back light brightness is provided, and these method regulation and control are simple, effective.
For achieving the above object, the invention provides a kind of notebook computer of adjustable keyboard back light brightness, it comprises: width modulation maker, the light sensor that is connected with the width modulation maker, and several LED lamps of being connected with the width modulation maker.
Also comprise a gauge tap, this gauge tap is connected with this pulsewidth maker.
This width modulation maker is the embedded controller in the notebook computer.
These several LED lamps are layed in the below of keyboard of notebook computer, and this keyboard of notebook computer is provided with the screen printing pattern of light transmissive material.
This light sensor is photoresistance.
This light sensor is a phototriode.
The present invention also provides a kind of regulate and control method of notebook computer of adjustable keyboard back light brightness, and it comprises the steps:
Step 1, light sensor produce current command value based on the light intensity of notebook computer surrounding environment, and this current command value are passed to the width modulation maker;
Step 2, described width modulation maker are regulated the pulse-width signal of its generation according to current command value;
This width modulation maker is the embedded controller in the notebook computer.
This light sensor is photoresistance.
This light sensor is a phototriode.
Beneficial effect of the present invention: the present invention is by the light intensity of light sensor sensing notebook computer surrounding environment, produce current command value and produce relevant pulse width modulation signals with the control pwm generator, thereby reach the purpose of regulating the brightness of LED lamp, make and to be layed in LED lamp below the keyboard along with the intensity of extraneous light is regulated himself brightness automatically, be convenient to the user is convenient to use notebook computer in various photoenvironments keyboard operation, the regulate and control method of this invention is simply effective, and can reduce electric energy loss to a certain extent, help environmental protection.
In order further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the present invention is limited.
Description of drawings
Below in conjunction with accompanying drawing,, will make technical scheme of the present invention and other beneficial effect apparent by the specific embodiment of the present invention is described in detail.
In the accompanying drawing,
Fig. 1 is the structural representation of the notebook computer of the adjustable keyboard back light brightness of the present invention;
Fig. 2 is the process flow diagram of the regulate and control method of the notebook computer of the adjustable keyboard back light brightness of the present invention.
Embodiment
Technological means and the effect thereof taked for further setting forth the present invention are described in detail below in conjunction with the preferred embodiments of the present invention and accompanying drawing thereof.
As shown in Figure 1, for the structural representation of the notebook computer of the adjustable keyboard back light brightness of the present invention, only list part related to the present invention for convenience of explanation.The notebook computer of keyboard back light brightness that this is adjustable, it comprises: width modulation maker 2, light sensor 3, and several LED lamps 4, wherein this light sensor 3 is connected with modulation maker 2, several LED lamps 4 with modulate maker 2 and be connected.
In this example, width modulation maker 2 is the embedded controller (EC) of notebook computer, the pulse-width signal that utilizes embedded controller to produce is regulated control to several LED lamps 4, and product structure is simplified, rationally more, can effectively reduce cost.The dutycycle of the pulse-width signal by regulating 2 outputs of width modulation maker, thus reach the purpose of regulating the brightness of LED lamp with the dutycycle of regulating the conducting of LED lamp, and when the dutycycle of pulse-width signal is big more, the brightness of LED lamp is high more; When the dutycycle of pulse-width signal was 0, the LED lamp extinguished.
3 pairs of light intensities on every side of this light sensor are surveyed, and according to ambient light strength control width modulation maker 2.Light sensor 3 is photoresistance in the present embodiment, photoresistance has when being subjected to the light of proper wavelength irradiation, its electric current will become big characteristic with the increase of light intensity, therefore can be used for surveying notebook computer light intensity on every side, regulate the pulse-width signal of width modulation maker 2 to produce current command value.
These several LED lamps 4 are layed in the below of keyboard of notebook computer, this keyboard of notebook computer is provided with the screen printing pattern (not shown) of light transmissive material, the light that these several LED lamps 4 send sees through light transmissive material and provides backlight for keyboard of notebook computer, be convenient to the user and under various light condition, can know the character pattern of recognizing accurately on the computor-keyboard, be convenient to use notebook computer.
Use for convenience, the notebook computer of keyboard back light brightness that the present invention is adjustable also comprises a gauge tap 5, the unlatching that this gauge tap 5 can be used for supervisory keyboard backlight illumination regulatory function whether, under the comparatively sufficient situation of ambient light, the function of closing this keyboard back light brightness regulation that can be artificial, can not cause waste of electric energy, help energy savings.
As shown in Figure 2, be the regulate and control method of the notebook computer of the adjustable keyboard back light brightness of the present invention, it comprises the steps:
Step 1, light sensor produce current command value based on the light intensity of notebook computer surrounding environment, and this current command value are passed to the width modulation maker.This light sensor can be responded to the different light rays intensity under the different situations, and produces different current command values, to transfer the different isolychn intensity degree of controlled LED lamp.In embodiments of the present invention, described light sensor is photoresistance, this photoresistance has when being subjected to the light of proper wavelength irradiation, its current command value becomes big characteristic along with the increase of light intensity, therefore can be used for surveying notebook computer light intensity on every side, regulate the pulse-width signal of width modulation makers to produce different current command values.In other embodiments, light sensor can also be phototriode.
Step 2, described width modulation maker are regulated the pulse-width signal of its generation according to current command value.In embodiments of the present invention, this width modulation maker is the embedded controller in the notebook computer, the dutycycle of the pulse-width signal by regulating the output of this width modulation maker, thereby reach the purpose of regulating the brightness of LED lamp with the dutycycle of regulating the conducting of LED lamp, make the LED lamp under different light intensities, regulate automatically and produce different lamplight brightness, not only be convenient for people in various light environments, use notebook computer, and saved electric energy loss to a certain extent.
In sum, the present invention is by the light intensity of light sensor sensing notebook computer surrounding environment, produce current command value and produce relevant pulse width modulation signals with the control pwm generator, thereby reach the purpose of regulating the brightness of LED lamp, make and to be layed in LED lamp below the keyboard along with the intensity of extraneous light is regulated himself brightness automatically, be convenient to the user is convenient to use notebook computer in various photoenvironments keyboard operation, the regulate and control method of this invention is simply effective, and can reduce electric energy loss to a certain extent, help environmental protection.
The above for the person of ordinary skill of the art, can make other various corresponding changes and distortion according to technical scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection domain of claim of the present invention.
Claims (10)
1, a kind of notebook computer of adjustable keyboard back light brightness is characterized in that, comprising: width modulation maker, the light sensor that is connected with the width modulation maker, and several LED lamps of being connected with the width modulation maker.
2, the notebook computer of adjustable keyboard back light brightness as claimed in claim 1 is characterized in that, also comprises a gauge tap, and this gauge tap is connected with this pulsewidth maker.
3, the notebook computer of adjustable keyboard back light brightness as claimed in claim 1 is characterized in that, this width modulation maker is the embedded controller in the notebook computer.
4, the notebook computer of adjustable keyboard back light brightness as claimed in claim 1 is characterized in that, these several LED lamps are layed in the below of keyboard of notebook computer, and this keyboard of notebook computer is provided with the screen printing pattern of light transmissive material.
5, the notebook computer of adjustable keyboard back light brightness as claimed in claim 1 is characterized in that, this light sensor is photoresistance.
6, the notebook computer of adjustable keyboard back light brightness as claimed in claim 1 is characterized in that, this light sensor is a phototriode.
7, a kind of regulate and control method of notebook computer of adjustable keyboard back light brightness is characterized in that, comprises the steps:
Step 1, light sensor produce current command value based on the light intensity of notebook computer surrounding environment, and this current command value are passed to the width modulation maker;
Step 2, described width modulation maker are regulated the pulse-width signal of its generation according to current command value;
Step 3, electric current is fed to several LED lamps, makes that these several LED lamps are shinny according to the pulse-width signal after regulating.
8, the notebook computer of adjustable keyboard back light brightness as claimed in claim 7 is characterized in that, this width modulation maker is the embedded controller in the notebook computer.
9, the notebook computer of adjustable keyboard back light brightness as claimed in claim 7 is characterized in that, this light sensor is photoresistance.
10, the notebook computer of adjustable keyboard back light brightness as claimed in claim 7 is characterized in that, this light sensor is a phototriode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910190056A CN101655723A (en) | 2009-09-11 | 2009-09-11 | Notebook computer capable of adjusting and controlling backlight brightness of keyboard and method for adjusting and controlling same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910190056A CN101655723A (en) | 2009-09-11 | 2009-09-11 | Notebook computer capable of adjusting and controlling backlight brightness of keyboard and method for adjusting and controlling same |
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| Publication Number | Publication Date |
|---|---|
| CN101655723A true CN101655723A (en) | 2010-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910190056A Pending CN101655723A (en) | 2009-09-11 | 2009-09-11 | Notebook computer capable of adjusting and controlling backlight brightness of keyboard and method for adjusting and controlling same |
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| Country | Link |
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| CN (1) | CN101655723A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946673A (en) * | 2012-11-20 | 2013-02-27 | 无锡商业职业技术学院 | Laptop keyboard light |
| CN103490113A (en) * | 2012-06-07 | 2014-01-01 | 苹果公司 | Battery structure and integration |
| CN104540289A (en) * | 2014-12-29 | 2015-04-22 | 联想(北京)有限公司 | Backlight display control method and electronic device |
| US9735528B2 (en) | 2012-06-07 | 2017-08-15 | Apple Inc. | Cableless battery integration |
| WO2017147857A1 (en) * | 2016-03-03 | 2017-09-08 | 邱琦 | Smart workstation desk lighting lamp |
-
2009
- 2009-09-11 CN CN200910190056A patent/CN101655723A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490113A (en) * | 2012-06-07 | 2014-01-01 | 苹果公司 | Battery structure and integration |
| US9705115B2 (en) | 2012-06-07 | 2017-07-11 | Apple Inc. | Battery structure and integration |
| US9735528B2 (en) | 2012-06-07 | 2017-08-15 | Apple Inc. | Cableless battery integration |
| US10673035B2 (en) | 2012-06-07 | 2020-06-02 | Apple Inc. | Battery structure and integration |
| CN102946673A (en) * | 2012-11-20 | 2013-02-27 | 无锡商业职业技术学院 | Laptop keyboard light |
| CN104540289A (en) * | 2014-12-29 | 2015-04-22 | 联想(北京)有限公司 | Backlight display control method and electronic device |
| CN104540289B (en) * | 2014-12-29 | 2017-08-29 | 联想(北京)有限公司 | A kind of backlight display control method and electronic equipment |
| WO2017147857A1 (en) * | 2016-03-03 | 2017-09-08 | 邱琦 | Smart workstation desk lighting lamp |
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Application publication date: 20100224 |