CN105407610B - A kind of method and device for controlling double flashing light - Google Patents
A kind of method and device for controlling double flashing light Download PDFInfo
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- CN105407610B CN105407610B CN201510915087.XA CN201510915087A CN105407610B CN 105407610 B CN105407610 B CN 105407610B CN 201510915087 A CN201510915087 A CN 201510915087A CN 105407610 B CN105407610 B CN 105407610B
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Abstract
The invention discloses a kind of method and devices for controlling double flashing light.The device includes：First control module, for generating first control signal and second control signal；Drive module, for generating drive signal under the control of the first control signal；Second control module, for the drive signal to be controlled to export to the first light emitting diode or the second light emitting diode under the control of the second control signal, to realize double flashing light function.By the above-mentioned means, the present invention can realize double flashing light function at lower cost, and then reduce the production cost of mobile terminal.
Description
Technical field
The present invention relates to field of mobile terminals, more particularly to a kind of method and device for controlling double flashing light.
Background technology
With the development of camera function, more and more mobile terminals use forward and backward double flashing light designing scheme.For reality
Existing forward and backward double flashing light function in terms of circuit design, uses a two-way flash lamp driving chip or two lists more at present
Road flash lamp driving chip realizes double flashing light function.
Wherein, it using two-way flash lamp driving chip, since two-way flash lamp driving chip cost is very high, and then can improve
The production cost of mobile terminal.And two single channel flash lamp driving chips are used, it can accordingly increase the printed circuit of mobile terminal
The usable floor area of plate, and then can also improve the production cost of mobile terminal.
Invention content
The invention mainly solves the technical problem of providing a kind of method and devices for controlling double flashing light, can be with relatively low
Cost realizes double flashing light function, and then reduces the production cost of mobile terminal.
In order to solve the above technical problems, one aspect of the present invention is：A kind of control double flashing light is provided
Device, the device include：First control module, for generating first control signal and second control signal；Drive module is used for
Drive signal is generated under the control of first control signal；Second control module, for being controlled under the control of second control signal
Drive signal processed is exported to the first light emitting diode or the second light emitting diode, to realize double flashing light function.
Wherein, the second control module includes digital triode, the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, the input of digital triode
The grid of end and the second metal-oxide-semiconductor receives second control signal, and the output terminal of digital triode is connect with the grid of the first metal-oxide-semiconductor,
The source electrode of first metal-oxide-semiconductor is connect with the anode of the first light emitting diode, the sun of the source electrode of the second metal-oxide-semiconductor and the second light emitting diode
Pole connects, and the drain electrode of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor receives drive signal, first switch diode and second switch diode
Minus earth.
Wherein, drive module includes driving chip, and driving chip includes enabled pin, driving pin, enables pin and receive
First control signal drives pin output drive signal；Wherein, when first control signal is effective, if second control signal is
Low level signal, drive signal are sent to the first light emitting diode to control the first light-emitting diode flash, if the second control letter
Number for high level signal, drive signal exports to the second light emitting diode to control the second light-emitting diode flash.
Wherein, driving chip supports PWM or I2C adjustable currents, so that drive signal of the output to the first light emitting diode
Electric current be different from output to the second light emitting diode drive signal electric current.
Wherein, when first control signal is high level signal, first control signal is effective.
Wherein, in sequential, second control signal is generated prior to first control signal.
Wherein, the first control module is the general I/O port of base band control chip.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of side of double flashing light is provided
Method, this method include：Open any one camera on mobile phone；The mark of camera opened is obtained, is controlled according to mark
It makes the first control module and generates second control signal, so that the second control module connects driving under the control of second control signal
The access of module light emitting diode corresponding with the camera opened；Flash lamp operation mode instruction is obtained, according to flash lamp
Operating mode instruction controls the first control module to generate first control signal, so that control of the drive module in first control signal
It is lower to generate drive signal and export to the corresponding light emitting diode of camera opened.
Wherein, camera includes the first camera corresponding with the first light emitting diode and corresponding with the second light emitting diode
Second camera, drive module include driving chip；Wherein, when the camera opened is when being identified as the first camera,
Control second control signal is low level signal, to connect the access of driving chip and the first light emitting diode；When what is opened
When being identified as second camera of camera, control second control signal is high level signal, to connect driving chip and second
The access of light emitting diode.
Wherein, this method further comprises：When the camera opened is when being identified as the first camera, according to flash lamp
Operating mode instruction control drive module generates the drive signal that electric current is the first electric current；When being identified as the camera opened
During second camera, drive module is controlled to generate the drive signal that electric current is the second electric current according to flash lamp operation mode instruction；
Wherein, the first electric current is different from the second electric current.
The beneficial effects of the invention are as follows：It is different from the situation of the prior art, the method and dress of control flash lamp of the invention
It puts and first control signal and second control signal is generated by the first control module, drive module is in the control of first control signal
Lower generation drive signal, the second control module control drive signal to export to first luminous two under the control of second control signal
Pole pipe or the second light emitting diode, and then realize double flashing light function.By the above-mentioned means, the present invention can be real at lower cost
Existing double flashing light function, and then reduce the production cost of mobile terminal.
Description of the drawings
Fig. 1 is the structure diagram of the device of the control double flashing light of the embodiment of the present invention；
Fig. 2 is the circuit diagram of the device of control double flashing light shown in FIG. 1；
Fig. 3 is the flow chart of the method for the control double flashing light of the embodiment of the present invention.
Specific embodiment
The present invention is described in detail with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structure diagram of the device of the control double flashing light of the embodiment of the present invention.As shown in Figure 1, the device packet
Include the first control module 10, drive module 20, the second control module 30, the first light emitting diode 40 and the second light emitting diode
50。
First control module 10 is used to generate first control signal EN1 and second control signal EN2.
Drive module 20 is connect with the first control module 10, for generating driving under the control of first control signal EN1
Signal DV.
Second control module 30 is connect respectively with 20 and first control module 10 of drive module, in second control signal
Drive signal DV is controlled to export to the first light emitting diode 40 or the second light emitting diode 50, so as to fulfill double under the control of EN2
Flash lamp function.
Please also refer to Fig. 2, Fig. 2 is the circuit diagram of the device of control double flashing light shown in FIG. 1.As shown in Fig. 2,
First control module 10 is the general I/O port of base band control chip, including the first GPIO mouthfuls of GPIO1 and the 2nd GPIO
Mouth GPIO2.Drive module 20 includes driving chip U1, the first capacitance C1, the second capacitance C2, inductance H1, wherein, driving chip U1
Including enabled pin STROBE, pin LED, the first power input pin IN, second source input pin SW, power supply output are driven
Pin OUT.Second control module 30 includes digital triode U2, the first metal-oxide-semiconductor M1 and the second metal-oxide-semiconductor M2.
The enabled pin STROBE of driving chip U1 is connect with the first GPIO mouthfuls of GPIO1, for receiving first control signal
EN1.The drain D 2 of the 1 and second metal-oxide-semiconductor M2 of drain D of the driving pin LED and the first metal-oxide-semiconductor M1 of driving chip U1 are connect, and are used
In output drive signal DV.The power input pin IN of driving chip U1 receives DC power signal VIN, wherein, DC power supply
The voltage of signal VIN is in 2.5V between 5.5V；Meanwhile the first power input pin IN of driving chip U1 is electric with first respectively
The one end for holding C1 is connected with one end of inductance H1, the other end ground connection GND of the first capacitance C1.The second source of driving chip U1 is defeated
The other end for entering pin SW with inductance H1 is connect.One end of the power supply output pin OUT of the U1 of driving chip and the second capacitance C2
One end connection, the second capacitance C2 the other end ground connection GND.
Wherein, the first capacitance C1 is preferably 10 microfarads, and the second capacitance C2 is preferably 10 microfarads, and inductance H1 is preferably 1 microhenry.
The grid G 2 of the input terminal IN of digital triode U2 and the second metal-oxide-semiconductor M2 are connect with the 2nd GPIO mouthfuls of GPIO2, are used for
Receive second control signal EN2.The output terminal OUT of digital triode U2 is connect with the grid G 1 of the first metal-oxide-semiconductor M1, the first MOS
The source S 1 of pipe M1 is connect with the anode of the first light emitting diode 40,2 and second light emitting diode of source S of the second metal-oxide-semiconductor M2
50 anode connection, the drain D 2 of the 1 and second metal-oxide-semiconductor M2 of drain D of the first metal-oxide-semiconductor M1 receive drive signal DV, and first shines
The minus earth GND of 40 and second light emitting diode 50 of diode.
Wherein, when first control signal EN1 is effective, if second control signal EN2 is low level signal, the second metal-oxide-semiconductor
M2 ends；Meanwhile the output terminal OUT output high level signals of digital triode U2 are so that the first metal-oxide-semiconductor M1 is connected, so that first
The drain D 1 of metal-oxide-semiconductor M1 is connected with source S 1, so that drive signal DV is sent to first luminous two by the first metal-oxide-semiconductor M1
Pole pipe 40 is glistened with the first light emitting diode 40 of control.If second control signal EN2 is high level signal, digital triode U2's
Output terminal OUT exports low level signal so that the first metal-oxide-semiconductor M1 ends；Meanwhile second metal-oxide-semiconductor M2 conducting so that the second metal-oxide-semiconductor
The drain D 2 of M2 is connected with source S 2, so that drive signal DV is exported by the second metal-oxide-semiconductor M2 to the second light emitting diode
50 are glistened with the second light emitting diode 50 of control.In the present embodiment, when first control signal EN1 is high level signal, the
One control signal EN1 is effective.
When the first light emitting diode 40 is different from the second light emitting diode 50, with different operating currents, therefore,
Driving chip U1 is preferably the single channel flash lamp driving chip for supporting PWM or I2C adjustable currents, so as to export to first luminous two
The electric current of the drive signal DV of pole pipe 40 is different from output to the electric current of the drive signal DV of the second light emitting diode 50.
Specifically, in the present embodiment, driving chip U1 includes I2C interface, (not shown) even with ppu
It connects.Ppu is according to current control register of the flash lamp operation module instruction by I2C interface into driving chip U1
Corresponding command character is written to provide electric current as the drive signal DV of the first electric current or to second to the first light emitting diode 40
Light emitting diode 50 provides the drive signal DV that electric current is the second electric current, wherein, the maximum value of the first electric current and the second electric current is
1.5A, minimum value 93.75mA.In other embodiments, when driving chip U1 supports PWM adjustable currents, can also pass through
It adjusts PWM and obtains different electric currents.
Preferably due to which driving chip U1 can select the single channel flash lamp driving chip of different model, part single channel is dodged
The driving pin of light lamp driving chip has open circuit protecting function, and therefore, in sequential, second control signal EN2 is prior to first
Signal EN1 is controlled to generate.That is, second control signal EN2 first controls the second control module 30 to work so that driving chip
The driving pin of U1 is in normal operating conditions, and then first control signal EN1 controls driving chip U1 work to be driven to export again
Dynamic signal DV.
Fig. 3 is the flow chart of the method for the control double flashing light of the embodiment of the present invention, and the present invention is based on dresses shown in Fig. 2
It puts.As shown in figure 3, this method comprises the following steps：
Step S101：Open any one camera on mobile phone.
In step S101, camera include the first camera corresponding with the first light emitting diode and with second shine two
The corresponding second camera of pole pipe opens any one camera on mobile phone namely opens the first camera or unlatching second
Camera.
Step S102：The mark of camera opened is obtained, the second control is generated according to mark the first control module of control
Signal processed, so that drive module is connected under the control of second control signal is corresponding with the camera opened for the second control module
Light emitting diode access.
In step s 102, the mark of camera opened by operating system acquisition, when the mark for the camera opened
When knowing for the first camera, the first control module generates the second control signal of low level signal, to connect driving chip and the
The access of one light emitting diode, when the camera opened is when being identified as second camera, the first control module generates high electricity
The second control signal of ordinary mail number, to connect the access of driving chip and the second light emitting diode.Wherein, driving chip is arranged on
In drive module.
Step S103：Flash lamp operation mode instruction is obtained, according to flash lamp operation mode instruction control the first control mould
Block generates first control signal, is extremely opened so that drive module generates drive signal and exported under the control of first control signal
The corresponding light emitting diode of camera opened.
In step s 103, flash lamp operation mode instruction is obtained by operating system, the first control module is according to flash lamp
Operating mode instruction generates the first control signal of high level signal so that driving chip to be controlled to work, at this point, driving chip exports
The corresponding light emitting diode of camera that drive signal is extremely opened.
Preferably, in the present embodiment, when the first control module generates high level letter according to flash lamp operation mode instruction
Number first control signal after, ppu according to flash lamp operation module instruction by I2C interface into driving chip
Corresponding command character is written to provide the first electric current to the first light emitting diode in current control register drive signal or to
Second light emitting diode provides the drive signal of the second electric current.That is, when being identified as the camera that be opened first is taken the photograph
During as head, ppu controls drive module to generate driving letter of the electric current for the first electric current according to flash lamp operation mode instruction
Number and export to the first light emitting diode；When the camera opened is when being identified as second camera, according to flash lamp operation
Mode instruction control drive module generates electric current as the drive signal of the second electric current and exports to the second light emitting diode.Wherein,
First electric current is different from the second electric current.
The beneficial effects of the invention are as follows：It is different from the situation of the prior art, the method and dress of control flash lamp of the invention
It puts and first control signal and second control signal is generated by the first control module, drive module is in the control of first control signal
Lower generation drive signal, the second control module control drive signal to export to first luminous two under the control of second control signal
Pole pipe or the second light emitting diode are to realize double flashing light function.It is dodged by the above-mentioned means, a single channel is only used only in the present invention
Light lamp driving chip can realize double flashing light function, reduce the cost for realizing double flashing light function, thereby reduce movement
The production cost of terminal.
The foregoing is merely embodiments of the present invention, are not intended to limit the scope of the invention, every to utilize this
The equivalent structure or equivalent flow shift that description of the invention is made, is directly or indirectly used in other related technical areas,
It is included within the scope of the present invention.
Claims (10)
1. a kind of device for controlling double flashing light, which is characterized in that described device includes：
First control module, for generating first control signal and second control signal；
Drive module, for generating drive signal under the control of the first control signal；
Second control module shines for the drive signal to be controlled to export to first under the control of the second control signal
Diode or the second light emitting diode, to realize double flashing light function；
Wherein, after any one camera is opened, first control module generates institute according to the mark of the camera
Second control signal is stated, so that second control module connects the drive module under the control of the second control signal
The access of light emitting diode corresponding with the camera opened；
And first control module generates the first control signal according to flash lamp operation mode instruction, so that described
Drive module generates drive signal under the control of the first control signal and exports to the corresponding hair of camera opened
Optical diode；
Wherein, the light emitting diode includes first light emitting diode and second light emitting diode, the camera
Including the first camera corresponding with first light emitting diode and the second camera shooting corresponding with second light emitting diode
Head.
2. the apparatus according to claim 1, which is characterized in that second control module includes digital triode, and first
Metal-oxide-semiconductor and the second metal-oxide-semiconductor, the input terminal of the number triode and the grid of second metal-oxide-semiconductor receive second control
Signal, the output terminal of the number triode are connect with the grid of the first metal-oxide-semiconductor, the source electrode of first metal-oxide-semiconductor and the first hair
The anode connection of optical diode, the source electrode of second metal-oxide-semiconductor are connect with the anode of the second light emitting diode, the first MOS
The drain electrode of pipe and second metal-oxide-semiconductor receives the drive signal, first light emitting diode and second light-emitting diodes
The minus earth of pipe.
3. the apparatus of claim 2, which is characterized in that the drive module includes driving chip, the driving core
Piece includes enabled pin, driving pin, and the enabled pin receives the first control signal, described to drive described in pin output
Drive signal；
Wherein, when the first control signal is effective, if second control signal is low level signal, the drive signal is sent
To first light emitting diode to control first light-emitting diode flash, if second control signal is high level signal,
The drive signal exports to second light emitting diode to control second light-emitting diode flash.
4. device according to claim 3, which is characterized in that the driving chip supports PWM or I2C adjustable currents, with
The electric current for making output to the drive signal of first light emitting diode is different from output to second light emitting diode
The drive signal electric current.
5. device according to claim 3, which is characterized in that when the first control signal is high level signal, institute
It is effective to state first control signal.
6. the apparatus according to claim 1, which is characterized in that in sequential, the second control signal is prior to described
One control signal generates.
7. the apparatus according to claim 1, which is characterized in that first control module is general for base band control chip
I/O port.
A kind of 8. method for controlling double flashing light, which is characterized in that the method includes：
Open any one camera on mobile phone；
The mark of the camera opened is obtained, the first control module is controlled to generate the second control according to the mark and believed
Number, so that drive module is connected under the control of the second control signal is corresponding with the camera opened for the second control module
Light emitting diode access；
Flash lamp operation mode instruction is obtained, the first control module is controlled to generate the first control according to flash lamp operation mode instruction
Signal is taken the photograph so that the drive module generates drive signal under the control of the first control signal and exports to what is opened
As corresponding light emitting diode.
9. according to the method described in claim 8, it is characterized in that, the camera is including corresponding with the first light emitting diode
First camera and second camera corresponding with the second light emitting diode, the drive module include driving chip；
Wherein, when the camera opened is when being identified as first camera, it is low electricity to control the second control signal
Ordinary mail number, to connect the access of the driving chip and first light emitting diode；
When the camera opened is when being identified as the second camera, the second control signal is controlled to believe for high level
Number, to connect the access of the driving chip and second light emitting diode.
10. according to the method described in claim 9, it is characterized in that, the method further includes：
When the camera opened is when being identified as first camera, the drive is controlled according to flash lamp operation mode instruction
Dynamic model block generates the drive signal that electric current is the first electric current；
When the camera opened is when being identified as the second camera, the drive is controlled according to flash lamp operation mode instruction
Dynamic model block generates the drive signal that electric current is the second electric current；
Wherein, first electric current is different from second electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915087.XA CN105407610B (en) | 2015-12-09 | 2015-12-09 | A kind of method and device for controlling double flashing light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915087.XA CN105407610B (en) | 2015-12-09 | 2015-12-09 | A kind of method and device for controlling double flashing light |
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| Publication Number | Publication Date |
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| CN105407610A CN105407610A (en) | 2016-03-16 |
| CN105407610B true CN105407610B (en) | 2018-07-06 |
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| CN201510915087.XA Expired - Fee Related CN105407610B (en) | 2015-12-09 | 2015-12-09 | A kind of method and device for controlling double flashing light |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106163023B (en) * | 2015-03-23 | 2019-01-15 | 联想(北京)有限公司 | Electronic equipment |
| CN106412455A (en) * | 2016-11-24 | 2017-02-15 | 上海传英信息技术有限公司 | Photoflash lamp device and photographing apparatus |
| CN110191266B (en) * | 2018-04-28 | 2021-08-31 | Oppo广东移动通信有限公司 | Data processing method and device, electronic equipment and computer readable storage medium |
| WO2019206129A1 (en) * | 2018-04-28 | 2019-10-31 | Oppo广东移动通信有限公司 | Data processing method, apparatus, electronic device, and computer-readable storage medium |
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| KR101470091B1 (en) * | 2012-12-03 | 2014-12-10 | 김복만 | Warning light |
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| CN102630111A (en) * | 2011-02-07 | 2012-08-08 | 赛普拉斯半导体公司 | Mutli-string led current control system and method |
| CN103607822A (en) * | 2013-11-25 | 2014-02-26 | 广东欧珀移动通信有限公司 | Over-temperature protection method and device of flashlight of terminal |
| CN204031517U (en) * | 2014-06-10 | 2014-12-17 | 惠州市桑莱士光电有限公司 | A kind of camera module with double flashing light |
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