CN102572121A - Mobile phone of automatically adjusting screen brightness along with sunlight intensity and implementation method thereof - Google Patents
Mobile phone of automatically adjusting screen brightness along with sunlight intensity and implementation method thereof Download PDFInfo
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- CN102572121A CN102572121A CN2012100065026A CN201210006502A CN102572121A CN 102572121 A CN102572121 A CN 102572121A CN 2012100065026 A CN2012100065026 A CN 2012100065026A CN 201210006502 A CN201210006502 A CN 201210006502A CN 102572121 A CN102572121 A CN 102572121A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides a mobile phone of automatically adjusting screen brightness along with sunlight intensity and an implementation method thereof. The mobile phone of automatically adjusting the screen brightness along with the sunlight intensity is mainly and technically characterized in that a non-function zone on the surface of the mobile phone is provided with a mini-type solar panel connected with an original control circuit for a display of a mobile phone screen; when the backlight of the mobile phone screen is set to be in an automatic brightness adjusting state, the current value of the solar panel is judged by a control unit of the mobile phone, and the strength of the injection current of the mobile phone screen is adjusted according to a judged result to adjust the brightness of the mobile phone screen. According to the mobile phone of automatically adjusting the screen brightness along with the sunlight intensity, the brightness of the mobile phone screen can be automatically controlled by the strength of the current generated by the solar panel, and the current generated by the solar panel is output to the mobile phone screen, and thereby, not only can the brightness of the mobile phone screen be ensured but also the electric quantity of a cell of the mobile phone can be saved.
Description
Technical field
The invention belongs to the communication terminal technical field, relate in particular to the mobile phone of adjusting screen intensity with sunlight intensity automatically.The invention still further relates to the method for this kind mobile phone screen automatic brightness adjustment.
Background technology
At present, the used mobile phone screen electric power system of user generally is through the battery of mobile phone power supply, but battery of mobile phone is very fast with regard to power consumption, and the cell phone standby time is short, the charging that causes the user not stop.In order to save the power consumption of battery of mobile phone, a lot of effort have also been done in the prior art.
In Chinese patent 01142699.3, disclose: self-regulating method of poor light lamp for fitting environmental light strength and circuit, utilize light-sensitive device to realize sensitization, through the analysis and Control screen intensity.Its shortcoming is that screen intensity is turned down when high light, lightens during the low light level, makes the excessive waste electric weight of low light level sub-screen like this, cannot see screen display during high light.Disclosed mobile phone can be adjusted the method for screen intensity automatically in Chinese patent 01120659.4, utilizes sensor devices to obtain extraneous light intensity, makes mobile phone screen adjust to corresponding brightness.More than two kinds of methods all do not relate to solar panel, and use light-sensitive device to realize sensitization, production cost also can increase accordingly.
In addition, Chinese patent 200620148418.8 with in 200620148417.3 disclosed be to utilize solar energy to realize mobile phone power supply or charging, but do not use solar energy that the mobile phone screen intensity is controlled.
Summary of the invention
The object of the invention is intended to overcome the shortcoming of above-mentioned prior art; A kind of mobile phone and its implementation of adjusting screen intensity with sunlight intensity automatically is provided; The current strength that solar panel of the present invention produces can be controlled the mobile phone screen intensity automatically; The electric current that solar panel produces is exported to mobile phone screen, can guarantee that mobile phone screen brightness can save cell-phone battery electric-charge quantity again.
The present invention realizes through following technical scheme:
The present invention provides a kind of mobile phone of adjusting screen intensity with sunlight intensity automatically; It is characterized in that in the no functional areas on said mobile phone surface a small-sized solar cell panel of being made up of several parallelly connected solar cells being installed, said small-sized circuit that too can cell panel shows that with mobile phone screen original control circuit is connected; In that mobile phone screen is backlight when being set to adjust luminance state automatically, the mobile phone control unit is judged the current value size of solar panel, and adjusts the brightness of mobile phone screen according to the injection current size that the result who judges regulates this mobile phone screen.
The said small-sized electric current that produces of solar cell that too can cell panel is supplied with mobile phone screen by direct current through thyristor through filter circuit filtering alternating current component; Between filter circuit and thyristor, also be connected with a comparator; The input of said comparator is respectively to connect the VCC V2 of the original electric power system of mobile phone screen and the direct current V1 that solar cell produces, and according to comparator V2 and the big or small relatively judgement of V1 is divided into following situation:
If V1＜and during V2, comparator output reverse current, thyristor is closed, and solar cell does not provide electric current, and screen backlight LED is only by the original electric current power supply of mobile phone screen;
If V1＞and during V2, comparator output forward current, thyristor is opened, and the solar panel output current is parallelly connected with the original power supply of mobile phone screen: supply power to screen backlight LED behind two current summations; At this moment,
The electric current that the electric current that solar cell provides adds the original battery power supply system of mobile phone when being lower than the brightest required current threshold 20mA of screen, the increase of the electric current that provides along with solar cell, screen brightens gradually;
The electric current that solar cell provides adds when the electric current of original battery power supply system reaches the brightest required current threshold 20mA of screen; It is the brightest that screen reaches; The electric current that provides along with solar energy increases; The mobile phone control unit is controlled the supply that original battery reduces electric weight, is no more than the threshold values of mobile phone screen with the electric current that guarantees aggregate supply, and screen is normally shown.
Said mobile phone control unit judges that the current value size of solar panel is meant: under the situation that mobile phone screen is lighted, the mobile phone control unit is controlled mobile phone screen brightness automatically according to solar panel two ends current value and is changed; Five stages of said solar panel are:
First stage 0～4mA, adjusting said mobile phone screen is the little bright state of first grade;
Second stage 4～8mA, adjusting said mobile phone screen is second bright slightly state of grade;
Three phases 8～12mA, adjusting said mobile phone screen is the bright state of Three Estate;
Four-stage 12～16mA, adjusting said mobile phone screen is the 4th brighter grade state;
The 5th stage is 16～20mA, and adjusting said mobile phone screen is the 5th the brightest grade state.
The present invention also provides a kind of and adjusts the implementation method of the mobile phone of screen intensity automatically with sunlight intensity, said mobile phone control unit when mobile phone is in open state according to the brightness of following step adjustment mobile phone screen:
1) carry out the whole state of mobile phone screen brightness behaviour wage adjustment backlight, the user selects this brightness backlight arbitrarily in can revising the brightness option of mobile phone;
2) do you judge that the project of adjustment brightness is selected automatically? If then carry out step 3); If not, then proceed step 1);
3) read the current value size of this solar panel;
4) according to said too can the cell panel current value size, the output of adjustment battery electric quantity is the brightness of corresponding grade with the screen backlight brightness of adjustment mobile phone.
The present invention compared with prior art possesses following outstanding substantive distinguishing features and obvious improvement:
It is to raise through solar panel electric current under the environment of strong illumination that the present invention saves cell-phone battery electric-charge quantity; And electric current reduces under the environment of dark; The mobile phone control unit can be adjusted to low-light level according to the brightness that this mobile phone is backlight of the current value of this reduction; And be adjusted to high brightness, thereby reach the purpose that reduces battery power consumption in any environment according to the brightness that this mobile phone is backlight of the current value of this rising.
Description of drawings
Fig. 1 is that solar battery suppling circuit is connected sketch map with the original power supply circuits of mobile phone screen.
Fig. 2 is the control of mobile phone control unit to electric current.
Fig. 3 is a mobile phone screen electric current supply flow process.
Fig. 4 is a mobile phone screen automatic control flow chart backlight.
Through embodiment of the present invention given below, and accompanying drawings can further be well understood to the present invention.But they are not to qualification of the present invention.
Embodiment
As shown in Figure 1; A kind of mobile phone of adjusting screen intensity with sunlight intensity automatically; Install one by P1, P2 in the no functional areas on mobile phone surface ... The small-sized solar cell panel that several parallelly connected solar cells are formed, small-sized circuit that too can cell panel shows that with mobile phone screen original control circuit is connected; The small-sized electric current that produces of solar cell that too can cell panel is supplied with mobile phone screen by direct current through thyristor Q1 through filter circuit Rc filtering alternating current component, and thyristor Q1 can prevent to form reverse charging circuit, causes solar panel is charged.
Between filter circuit Rc and thyristor Q1, also be connected with a comparator M1, the input of said comparator M1 is respectively to connect the VCC V2 of the original electric power system of mobile phone screen and the direct current V1 of solar cell generation, and according to the characteristic curve of solar panel: maximum is output as 1.5V; 20mA; During output current 10mA, voltage 1V, this is a prior art; Can obtain V2 thus is 1V; Can confirm the size of resistance R 1 and R3 thus, R1 and C1 constitute filter circuit, and resistance will be confirmed according to actual filtering parameter.R3 can confirm according to VCC * R5/ (R3+R5)=1V, joins with the concrete parameter correlation of circuit system; According to comparator V2 and the big or small relatively judgement of V1 are divided into following situation:
If V1＜and during V2, comparator M1 export reverse current, and thyristor Q1 closes, and solar cell does not provide electric current, and screen backlight LED is only supplied power by the original electric current of mobile phone screen;
If V1＞and during V2, comparator M1 export forward current, and thyristor Q1 opens, and the solar panel output current is parallelly connected with the original power supply of mobile phone screen: supply power to screen backlight LED behind two current summations; At this moment,
The electric current that the electric current that solar cell provides adds the original battery power supply system of mobile phone when being lower than the brightest required current threshold 20mA of screen, the increase of the electric current that provides along with solar cell, screen brightens gradually;
The electric current that solar cell provides adds when the electric current of original battery power supply system reaches the brightest required current threshold 20mA of screen; It is the brightest that screen reaches; The electric current that provides along with solar energy increases; The mobile phone control unit is controlled the supply that original battery reduces electric weight, is no more than the threshold values of mobile phone screen with the electric current that guarantees aggregate supply, and screen is normally shown.
That is: when sun light intensity increases; The output current of solar panel further increases, and the supply current of screen backlight LED is also along with increase, when supply current reaches the brightness of screen high-high brightness needs; The electric current that produces along with solar panel strengthens; The battery of mobile phone amount of power supply reduces, and has therefore just formed a kind of cell-phone battery electric-charge quantity that under high light, do not use, and relies on environment (solar energy) to regulate the regulative mode of screen display brightness.
As shown in Figure 3, under low light level situation, supplying with the mobile phone screen minimum current is 10mA, and this electric current is provided by battery of mobile phone.Along with light strengthens, the solar panel power supply increases, when the electric current of supplying with mobile phone screen reaches 20mA, and at this moment if the solar panel power supply continues to increase, the supply of then corresponding minimizing cell-phone battery electric-charge quantity, the electric current that mobile phone screen is supplied with in assurance remains on 20mA.So can save cell-phone battery electric-charge quantity.Can basis when practical application, the concrete parameter of mobile phone is carried out the part adjustment, more controls effect to reach.
As shown in Figure 2, in that mobile phone screen is backlight when being set to adjust luminance state automatically, the mobile phone control unit is judged the current value size of solar panel, and adjusts the brightness of mobile phone screen according to the injection current size that the result who judges regulates this mobile phone screen.
As shown in Figure 4, adjust the implementation method of the mobile phone of screen intensity automatically with sunlight intensity, said mobile phone control unit when mobile phone is in open state according to the brightness of following step adjustment mobile phone screen:
Are step 2, the judgement project of adjustment brightness automatically selected? If then carry out step 3; If not, then proceed step 1;
Step 3, read the current value size of this solar panel;
Step 4, according to said too can the cell panel current value size, the output of adjustment battery electric quantity is the brightness of corresponding grade with the screen backlight brightness of adjustment mobile phone.
The brightness of corresponding grade is meant: under the situation that mobile phone screen is lighted; The mobile phone control unit is controlled mobile phone screen brightness automatically according to solar panel two ends current value and is changed; Mobile phone screen brightness is set to 5 grades; The current value at solar panel two ends raises under the high light, and mobile phone screen brightness increases; The current value at solar panel two ends reduces under the low light level, and mobile phone screen brightness reduces, and five stages of solar panel current value are:
First stage 0～4mA, adjusting said mobile phone screen is the little bright state of first grade;
Second stage 4～8mA, adjusting said mobile phone screen is second bright slightly state of grade;
Three phases 8～12mA, adjusting said mobile phone screen is the bright state of Three Estate;
Four-stage 12～16mA, adjusting said mobile phone screen is the 4th brighter grade state;
The 5th stage is 16～20mA, and adjusting said mobile phone screen is the 5th the brightest grade state.
So; Under the situation that mobile phone screen is lighted, can control mobile phone screen brightness automatically according to the current value at solar panel two ends and change, mobile phone screen brightness is under the more weak situation of light intensity; Brightness reduces; Under the stronger situation of light intensity, brightness increases, thereby realizes that mobile phone screen brightness is controlled automatically and the purpose of saving cell-phone battery electric-charge quantity.
The above is merely the best specific embodiment of the present invention, but structural feature of the present invention is not limited thereto, and anyly is familiar with this art in field of the present invention, can think easily and variation or modification, all can contain and cover in claim of the present invention.
Claims (4)
1. mobile phone of adjusting screen intensity with sunlight intensity automatically; It is characterized in that: a small-sized solar cell panel of being made up of several parallelly connected solar cells is installed in the no functional areas on said mobile phone surface, and said small-sized circuit that too can cell panel shows that with mobile phone screen original control circuit is connected; In that mobile phone screen is backlight when being set to adjust luminance state automatically, the mobile phone control unit is judged the current value size of solar panel, and adjusts the brightness of mobile phone screen according to the injection current size that the result who judges regulates this mobile phone screen.
2. the mobile phone of adjusting screen intensity with sunlight intensity automatically according to claim 1; It is characterized in that: the said small-sized electric current that produces of solar cell that too can cell panel is supplied with mobile phone screen by direct current through thyristor through filter circuit filtering alternating current component; Between filter circuit and thyristor, also be connected with a comparator; The input of said comparator is respectively to connect the VCCV2 of the original electric power system of mobile phone screen and the direct current V1 that solar cell produces, and according to comparator V2 and the big or small relatively judgement of V1 is divided into following situation:
If V1＜and during V2, comparator output reverse current, thyristor is closed, and solar cell does not provide electric current, and screen backlight LED is only by the original electric current power supply of mobile phone screen;
If V1＞and during V2, comparator output forward current, thyristor is opened, and the solar panel output current is parallelly connected with the original power supply of mobile phone screen: supply power to screen backlight LED behind two current summations; At this moment,
The electric current that the electric current that solar cell provides adds the original battery power supply system of mobile phone when being lower than the brightest required current threshold 20mA of screen, the increase of the electric current that provides along with solar cell, screen brightens gradually;
The electric current that solar cell provides adds when the electric current of original battery power supply system reaches the brightest required current threshold 20mA of screen; It is the brightest that screen reaches; The electric current that provides along with solar energy increases; The mobile phone control unit is controlled the supply that original battery reduces electric weight, is no more than the threshold values of mobile phone screen with the electric current that guarantees aggregate supply, and screen is normally shown.
3. the mobile phone of adjusting screen intensity with sunlight intensity automatically according to claim 1; It is characterized in that: said mobile phone control unit judges that the current value size of solar panel is meant: under the situation that mobile phone screen is lighted, the mobile phone control unit is controlled mobile phone screen brightness automatically according to solar panel two ends current value and is changed; Five stages of said solar panel are:
First stage 0～4mA, adjusting said mobile phone screen is the little bright state of first grade;
Second stage 4～8mA, adjusting said mobile phone screen is second bright slightly state of grade;
Three phases 8～12mA, adjusting said mobile phone screen is the bright state of Three Estate;
Four-stage 12～16mA, adjusting said mobile phone screen is the 4th brighter grade state;
The 5th stage is 16～20mA, and adjusting said mobile phone screen is the 5th the brightest grade state.
4. adjust the method for the mobile phone of screen intensity automatically with sunlight intensity for one kind, it is characterized in that: said mobile phone control unit when mobile phone is in open state according to the brightness of following step adjustment mobile phone screen:
1) carry out the whole state of mobile phone screen brightness behaviour wage adjustment backlight, the user selects this brightness backlight arbitrarily in can revising the brightness option of mobile phone;
2) do you judge that the project of adjustment brightness is selected automatically? If then carry out step 3); If not, then proceed step 1);
3) read the current value size of this solar panel;
4) according to said too can the cell panel current value size, the output of adjustment battery electric quantity is the brightness of corresponding grade with the screen backlight brightness of adjustment mobile phone.
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| CN2012100065026A CN102572121A (en) | 2012-01-10 | 2012-01-10 | Mobile phone of automatically adjusting screen brightness along with sunlight intensity and implementation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684216A (en) * | 2012-09-18 | 2014-03-26 | 仁宝电脑工业股份有限公司 | Electronic device and control method thereof |
| EP2829961A1 (en) | 2013-06-18 | 2015-01-28 | Spreadtrum Communications (Shanghai) Co., Ltd. | Display interface converting system and method thereof |
| CN105071476A (en) * | 2015-08-14 | 2015-11-18 | 惠州Tcl移动通信有限公司 | Electronic device based on solar energy charging and method for regulating brightness of screen |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841580A (en) * | 2009-03-19 | 2010-09-22 | Lg电子株式会社 | Portable terminal and display controlliing method of the same |
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- 2012-01-10 CN CN2012100065026A patent/CN102572121A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841580A (en) * | 2009-03-19 | 2010-09-22 | Lg电子株式会社 | Portable terminal and display controlliing method of the same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684216A (en) * | 2012-09-18 | 2014-03-26 | 仁宝电脑工业股份有限公司 | Electronic device and control method thereof |
| EP2829961A1 (en) | 2013-06-18 | 2015-01-28 | Spreadtrum Communications (Shanghai) Co., Ltd. | Display interface converting system and method thereof |
| CN105071476A (en) * | 2015-08-14 | 2015-11-18 | 惠州Tcl移动通信有限公司 | Electronic device based on solar energy charging and method for regulating brightness of screen |
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Application publication date: 20120711 |