CN102902197B - A kind of clock display control device of mobile terminal - Google Patents
A kind of clock display control device of mobile terminal Download PDFInfo
- Publication number
- CN102902197B CN102902197B CN201210412209.XA CN201210412209A CN102902197B CN 102902197 B CN102902197 B CN 102902197B CN 201210412209 A CN201210412209 A CN 201210412209A CN 102902197 B CN102902197 B CN 102902197B
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- control module
- switch control
- mobile terminal
- triode
- resistance
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- 238000004146 energy storage Methods 0.000 claims description 16
- 230000003213 activating effect Effects 0.000 abstract description 4
- 230000004913 activation Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Classifications
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention discloses a kind of clock display control device of mobile terminal, comprise battery, the first switch control module, second switch control module, power management chip, LED, the first resistance, the second resistance and central processing unit; The connecting the 1st end of GPIO_122 mouth and first switch control module of central processing unit by the first resistance, be also connected the VCOIN end of the 2nd end of the first switch control module, the positive pole of LED and power management chip by the second resistance of battery; 3rd end of the first switch control module connects the 1st end of second switch control module; 2nd end of second switch control module connects the negative pole of LED, the 3rd end ground connection of second switch control module.Mobile terminal, when state of activation, by lighting backlight displaying time and the date of the LCD of mobile terminal, when holding state, coming displaying time and date by lightening LED lamp, now without the need to activating mobile terminal, saving battery electric quantity.
Description
Technical field
The present invention relates to mobile communication technology field, particularly a kind of clock display control device of mobile terminal.
Background technology
At present, most of smart mobile phone all needs, by the on and off using key to control mobile phone screen, namely to control enable mode and the standby mode of mobile phone with key.In stand-by mode, mobile phone screen can not displaying time and date for mobile phone, now needs mobile phone to activate, lights mobile phone screen and just can see time and date.If often like this operation, the key of mobile phone easily damages, and finally there will be the situation that key is malfunctioning, and often Activates Phone and can increase the power consumption of mobile phone, shortens the stand-by time of mobile phone.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of clock display control device of mobile terminal, can when standby status of mobile phone displaying time and date, to cause power consumption large and damage the problem of mobile phone key by Activating Phone to solve prior art.
In order to achieve the above object, this invention takes following technical scheme:
A clock display control device for mobile terminal, it comprises battery, the first switch control module, second switch control module, power management chip, LED, the first resistance, the second resistance and the central processing unit for the duty that controls the first switch control module; The positive pole of described battery is connected 1st end of GPIO_122 mouth with the first switch control module of central processing unit by the first resistance, is also connected the VCOIN end of the 2nd end of the first switch control module, the positive pole of LED and power management chip by the second resistance, the minus earth of described battery; 3rd end ground connection of described first switch control module, also connects the 1st end of second switch control module; 2nd end of described second switch control module connects the negative pole of LED, the 3rd end ground connection of second switch control module; The VSS end of described central processing unit and the VSS of power management chip hold equal ground connection.
The clock display control device of described mobile terminal, also comprises reserve battery and energy-storage module, and one end of described energy-storage module connects the VCOIN end of the positive pole of battery, the positive pole of reserve battery and power management chip, the other end ground connection of described energy-storage module; The minus earth of reserve battery.
The clock display control device of described mobile terminal, also comprises diode, and the positive pole of described diode connects the positive pole of battery, and the negative pole of diode connects the VCOIN end of one end of energy-storage module, the positive pole of reserve battery and power management chip.
In the clock display control device of described mobile terminal, described energy-storage module comprises electric capacity, and one end of described electric capacity connects the negative pole of diode, the VCOIN end of power management chip and the positive pole of reserve battery, the other end ground connection of electric capacity.
The clock display control device of described mobile terminal, also comprises the 3rd resistance, and one end of described 3rd resistance connects the negative pole of diode, the VCOIN end of power management chip and the positive pole of reserve battery, and the other end of the 3rd resistance connects the positive pole of LED.
In the clock display control device of described mobile terminal, described first switch control module comprises the first triode, the base stage of described first triode connect central processing unit GPIO_122 mouth, also connect the positive pole of battery and the positive pole of diode by the first resistance, the emitter of described first triode connects the positive pole of battery and the positive pole of diode by the second resistance, the 1st end of the grounded collector of the first triode, also connection second switch control module.
In the clock display control device of described mobile terminal, described second switch control module comprises the second triode, the base stage of described second triode connects the collector of the first triode, and the collector of the second triode connects the negative pole of LED, the grounded emitter of the second triode.
The clock display control device of described mobile terminal, also comprises the 4th resistance, and one end of described 4th resistance connects the collector of the first triode, the other end ground connection of the 4th resistance.
In the clock display control device of described mobile terminal, described first triode is PNP triode, and the second triode is NPN triode.
Compared to prior art, the clock display control device of mobile terminal provided by the invention, mobile terminal is when state of activation, by lighting backlight displaying time and the date of the LCD of mobile terminal, and by central processing unit output high level, LED is extinguished, when holding state, central processing unit output low level, first switch control module and second switch control module are opened, lightening LED lamp comes displaying time and date, now without the need to activating mobile terminal, save battery electric quantity, extend the stand-by time of mobile terminal, and do not need the button pressing mobile terminal, extend the serviceable life of button.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the clock display control device preferred embodiment of mobile terminal of the present invention.
Embodiment
The invention provides a kind of clock display control device of mobile terminal, for making object of the present invention, technical scheme and effect clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1, the clock display control device of mobile terminal provided by the invention, for when mobile terminal activating, provide brightness by LCD backlight to time and date, when mobile terminal standby, light LED and provide brightness to time and date.As shown in Figure 1, it comprises battery BAT, the first switch control module 101, second switch control module 102, power management chip U1, LED D1, the first resistance R1, the second resistance R2 and the central processing unit U2 for the duty that controls the first switch control module 101.In the present embodiment, the model of described power management chip U1 is PM8029, and the model of central processing unit U2 is MSM8225.Described first resistance R1 and the second resistance R2 is pull-up resistor.
The positive pole of described battery BAT is connected 1st end of GPIO_122 mouth (i.e. the AJ1 pin of central processing unit U2) with the first switch control module 101 of central processing unit U2 by the first resistance R1, is also connected VCOIN end (i.e. the P14 pin of power management chip U1) of the 2nd end of the first switch control module 101, the positive pole of LED D1 and power management chip U1 by the second resistance R2, the minus earth of described battery BAT; 3rd end ground connection of described first switch control module 101, also connects the 1st end of second switch control module 102; 2nd end of described second switch control module 102 connects the negative pole of LED D1, the 3rd end ground connection of second switch control module 102; The VSS end of described central processing unit U2 and the VSS of power management chip U1 hold equal ground connection.
Described mobile terminal is preferably the mobile phone of android operating system, and the electricity of described battery BAT is greater than 3.3V, can give mobile terminal normal power supply.When mobile terminal is in state of activation, the enable signal that central processing unit U2 exports is high level, and the first switch control module 101 is closed, and now second switch control module 102 is also closed, LED D1 does not work, now by LCD backlight lightening displaying time and the date of mobile terminal; When mobile terminal is in holding state, the enable signal that central processing unit U2 exports is low level, and the first switch control module 101 is opened, and now second switch control module 102 is also opened, LED D1 is lighted, now can displaying time and date without the need to lighting display screen.
Please continue to refer to Fig. 1, the clock display control device of mobile terminal provided by the invention also comprises reserve battery C1 and energy-storage module 103.One end of described energy-storage module 103 connects the VCOIN end of the positive pole of battery BAT, the positive pole of reserve battery C1 and power management chip U1, the other end ground connection of described energy-storage module 103; The minus earth of reserve battery C1.
Described reserve battery C1 is used for when battery BAT departs from, and powers to the reference clock of mobile terminal, and such mobile terminal is when changing battery BAT, and original time and date can not change within a certain period of time, guarantees the accuracy of the clock of mobile terminal.
When mobile terminal normal power supply, this reserve battery C1 does not work, and is powered to reserve battery C1 by power management chip U1, and now reserve battery C1 is in charged state, and its charging current is 100uA, and charging voltage is no more than 3.2V.When charging, central processing unit U2 reads the voltage of reserve battery C1 by the VCOIN end of power management chip U1, monitors the charged state of reserve battery C1.
In order to when reserve battery C1 charges, prevent the discharge current of energy-storage module 103 from refluxing, the clock display control device of mobile terminal provided by the invention also comprises diode D2, the positive pole of described diode D2 connects the positive pole of battery BAT, and the negative pole of diode D2 connects the VCOIN end of one end of energy-storage module 103, the positive pole of reserve battery C1 and power management chip U1.
In the embodiment of the present invention, described energy-storage module 103 comprises electric capacity C2, and one end of described electric capacity C2 connects the negative pole of diode D2, the VCOIN end of power management chip U1 and the positive pole of reserve battery C1, the other end ground connection of electric capacity C2.
Be burned to prevent LED D1, the clock display control device of mobile terminal provided by the invention also comprises the 3rd resistance R3, described 3rd resistance R3 is current-limiting resistance, its one end connects the positive pole of the negative pole of diode D2, the VCOIN end of power management chip U1 and reserve battery C1, and the other end of the 3rd resistance R3 connects the positive pole of LED D1.
Please again consult Fig. 1, in the specific implementation, described first switch control module 101 comprises the first triode Q1, and described first triode Q1 is PNP triode.Wherein, the base stage (i.e. the 1st end of the first switch control module 101) of described first triode Q1 connect central processing unit U2 GPIO_122 mouth, also connect the positive pole of battery BAT and the positive pole of diode D2 by the first resistance R1, the emitter (i.e. the 2nd end of the first switch control module 101) of described first triode Q1 connects the positive pole of battery BAT and the positive pole of diode D2 by the second resistance R2, the 1st end of collector (i.e. the 3rd end of the first switch control module 101) ground connection of the first triode Q1, also connection second switch control module 102.
Described second switch control module 102 comprises the second triode Q2, and the second triode Q2 is NPN triode.Wherein, the base stage (i.e. the 1st end of second switch control module 102) of described second triode Q2 connects the collector of the first triode Q1, the collector (i.e. the 2nd end of second switch control module 102) of the second triode Q2 connects the negative pole of LED D1, emitter (i.e. the 3rd end of the second switch control module 102) ground connection of the second triode Q2.
Further, the clock display control device of mobile terminal provided by the invention also comprises the 4th resistance R4, and one end of described 4th resistance R4 connects the collector of the first triode Q1, the other end ground connection of the 4th resistance R4.
For the ease of better understanding the present invention, below in conjunction with Fig. 1, the principle of work of the clock display control device of mobile terminal provided by the invention is described in detail:
When mobile terminal is activated, its LCD backlight lightening, the enable signal EN that now central processing unit U2 exports is configured to high level state, and by the first resistance R1 pull-up, now the first triode Q1 ends, the base stage of the second triode Q2 inputs owing to not having high level, and end, now LED D1 does not work yet.Because the display screen of at this moment mobile terminal is illuminating state, so do not need the display section of the time and date driving mobile terminal, this is the display mode of the time and date of existing mobile terminal.
When mobile terminal is in holding state, the LCD backlight of mobile terminal is extinguished, the enable signal EN that central processing unit U2 exports is low level, make the first triode Q1 conducting, now the base stage of the second triode Q2 inputs and conducting owing to there being the enable signal of high level, lightening LED lamp D1, thus the time and date driving mobile terminal is bright state.
When battery BAT takes out from mobile terminal, central processing unit U2 does not work, now the first triode Q1 and the second triode Q2 all ends, now electric capacity C2 starts electric discharge, charge to reserve battery C1, simultaneously reserve battery C1 discharges and to power to the reference clock of mobile terminal, ensures that the time and date of mobile terminal can not disappear, guarantee the accuracy of clock, now mobile terminal cannot displaying time and date.
For battery of mobile terminal capacity for 1500mA, when the LCD screen of mobile terminal is lighted always, battery can only use 7.5 hours, when mobile terminal is converted to state of activation from holding state, press the electric current that key needs to consume more than 200mA, battery also can only use 7.5 hours.But the working current of LED is 20mA, LED needs work battery electric quantity could have been consumed for 75 hours, so mobile terminal is on holding state lightening LED lamp displaying time and date, needs the electricity of consumption very little, extends the stand-by time of mobile phone.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection domain that all should belong to the claim appended by the present invention.
Claims (8)
1. the clock display control device of a mobile terminal, it is characterized in that, comprise battery, the first switch control module, second switch control module, power management chip, LED, the first resistance, the second resistance and the central processing unit for the duty that controls the first switch control module; The positive pole of described battery is connected 1st end of GPIO_122 mouth with the first switch control module of central processing unit by the first resistance, is also connected the VCOIN end of the 2nd end of the first switch control module, the positive pole of LED and power management chip by the second resistance, the minus earth of described battery; 3rd end ground connection of described first switch control module, also connects the 1st end of second switch control module; 2nd end of described second switch control module connects the negative pole of LED, the 3rd end ground connection of second switch control module; The VSS end of described central processing unit and the VSS of power management chip hold equal ground connection;
The clock display control device of described mobile terminal also comprises reserve battery and energy-storage module, and one end of described energy-storage module connects the VCOIN end of the positive pole of battery, the positive pole of reserve battery and power management chip, the other end ground connection of described energy-storage module; The minus earth of reserve battery.
2. the clock display control device of mobile terminal according to claim 1, it is characterized in that, also comprise diode, the positive pole of described diode connects the positive pole of battery, and the negative pole of diode connects the VCOIN end of one end of energy-storage module, the positive pole of reserve battery and power management chip.
3. the clock display control device of mobile terminal according to claim 2, it is characterized in that, described energy-storage module comprises electric capacity, and one end of described electric capacity connects the negative pole of diode, the VCOIN end of power management chip and the positive pole of reserve battery, the other end ground connection of electric capacity.
4. the clock display control device of mobile terminal according to claim 2, it is characterized in that, also comprise the 3rd resistance, one end of described 3rd resistance connects the positive pole of the negative pole of diode, the VCOIN end of power management chip and reserve battery, and the other end of the 3rd resistance connects the positive pole of LED.
5. the clock display control device of mobile terminal according to claim 2, it is characterized in that, described first switch control module comprises the first triode, the base stage of described first triode connect central processing unit GPIO_122 mouth, also connect the positive pole of battery and the positive pole of diode by the first resistance, the emitter of described first triode connects the positive pole of battery and the positive pole of diode by the second resistance, the 1st end of the grounded collector of the first triode, also connection second switch control module.
6. the clock display control device of mobile terminal according to claim 5, it is characterized in that, described second switch control module comprises the second triode, the base stage of described second triode connects the collector of the first triode, the collector of the second triode connects the negative pole of LED, the grounded emitter of the second triode.
7. the clock display control device of mobile terminal according to claim 5, is characterized in that, also comprises the 4th resistance, and one end of described 4th resistance connects the collector of the first triode, the other end ground connection of the 4th resistance.
8. the clock display control device of mobile terminal according to claim 6, is characterized in that, described first triode is PNP triode, and the second triode is NPN triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210412209.XA CN102902197B (en) | 2012-10-25 | 2012-10-25 | A kind of clock display control device of mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210412209.XA CN102902197B (en) | 2012-10-25 | 2012-10-25 | A kind of clock display control device of mobile terminal |
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| Publication Number | Publication Date |
|---|---|
| CN102902197A CN102902197A (en) | 2013-01-30 |
| CN102902197B true CN102902197B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210412209.XA Expired - Fee Related CN102902197B (en) | 2012-10-25 | 2012-10-25 | A kind of clock display control device of mobile terminal |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2457636Y (en) * | 2001-01-04 | 2001-10-31 | 朱胜才 | Calendar clock |
| CN2891022Y (en) * | 2005-11-20 | 2007-04-18 | 厦门鸿光电子有限公司 | LED clock |
| CN201066445Y (en) * | 2007-08-28 | 2008-05-28 | 杭州电子科技大学 | An electronic clock for classroom or teacher |
| EP2410821A2 (en) * | 2010-07-20 | 2012-01-25 | Panasonic Electric Works Co., Ltd. | Lighting device of semiconductor light-emitting element and illumination fixture using the same |
| CN102710849A (en) * | 2012-05-14 | 2012-10-03 | 惠州Tcl移动通信有限公司 | Mobile terminal prompting relatively low electric quantity of battery through flash lamp |
-
2012
- 2012-10-25 CN CN201210412209.XA patent/CN102902197B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2457636Y (en) * | 2001-01-04 | 2001-10-31 | 朱胜才 | Calendar clock |
| CN2891022Y (en) * | 2005-11-20 | 2007-04-18 | 厦门鸿光电子有限公司 | LED clock |
| CN201066445Y (en) * | 2007-08-28 | 2008-05-28 | 杭州电子科技大学 | An electronic clock for classroom or teacher |
| EP2410821A2 (en) * | 2010-07-20 | 2012-01-25 | Panasonic Electric Works Co., Ltd. | Lighting device of semiconductor light-emitting element and illumination fixture using the same |
| CN102710849A (en) * | 2012-05-14 | 2012-10-03 | 惠州Tcl移动通信有限公司 | Mobile terminal prompting relatively low electric quantity of battery through flash lamp |
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| Publication number | Publication date |
|---|---|
| CN102902197A (en) | 2013-01-30 |
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