CN104580745B - Shooting light fill-in method and device of mobile terminal - Google Patents
Shooting light fill-in method and device of mobile terminal Download PDFInfo
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- CN104580745B CN104580745B CN201510047656.3A CN201510047656A CN104580745B CN 104580745 B CN104580745 B CN 104580745B CN 201510047656 A CN201510047656 A CN 201510047656A CN 104580745 B CN104580745 B CN 104580745B
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Abstract
The invention is applicable to the technical field of mobile terminals and provides a shooting light fill-in method and device of a mobile terminal. The shooting light fill-in method includes steps of triggering a photosensitive diode; driving a light fill-in lamp of the mobile terminal on the basis of output voltage of the photosensitive diode; shooting on the basis of real-time luminance of the light fill-in lamp. The photosensitive diode is arranged in the mobile terminal and controls input current of the light fill-in lamp, so that luminance of the light fill-in lamp is controlled. When the photosensitive diode senses strong light, luminance of the light fill-in lamp is lowered; when the photosensitive diode senses weak light, the luminance of the light fill-in lamp is improved so as to realize self-adaptive adjustment of the light fill-in lamp, and camera imaging effect of the mobile terminal is improved.
Description
Technical field
The invention belongs to technical field of mobile terminals, more particularly to a kind of mobile terminal take pictures light compensation method and device.
Background technology
In dim environment or when being taken pictures using mobile terminal at night, due to insufficient light, the effect taken pictures
Fruit can be short of, and cause the unintelligible or noise of imaging many, and current solution is to set to mend on mobile terminal panel
Light lamp, light requirement when being taken pictures to meet with this, reaches the effect of light filling.
However, there is following technical problem in present light filling scheme of taking pictures：The ambient light intensity of scene of no matter currently taking pictures
How, the brightness that light compensating lamp can be generated all is changeless, that is to say, that either the cloudy day, dusk, night or
Under any light scene, light compensating lamp can only all produce the light of constant brightness, and cannot according to the actual strength of ambient light come
Light filling is carried out, it is excessively bright or excessively dark to may result in the lightness shot, influence imaging effect.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of take pictures light compensation method and the device of mobile terminal, it is intended to solve mesh
The brightness that can be generated of light compensating lamp set in preceding mobile terminal is immobilized, and influence is taken pictures the problem of imaging effect.
The embodiment of the present invention is achieved in that a kind of light compensation method of taking pictures of mobile terminal, including：
Triggering photodiode work；
Voltage based on photodiode output drives the light compensating lamp work of the mobile terminal；
The real-time luminosity produced based on the light compensating lamp is taken pictures.
The another object of the embodiment of the present invention is to provide a kind of light compensating apparatus of taking pictures of mobile terminal, including：
Trigger element, for triggering photodiode work；
Light filling unit, the voltage for being exported based on the photodiode drives the light compensating lamp work of the mobile terminal
Make；
Photographing unit, the real-time luminosity for being produced based on the light compensating lamp is taken pictures.
The embodiment of the present invention controls light filling by setting photodiode inside mobile terminal using photodiode
The input current of lamp, so as to control the brightness of light compensating lamp, when photodiode senses high light, then the brightness of light compensating lamp is dropped
It is low；When photodiode senses dim light, then the brightness enhancing of light compensating lamp realizes that the self adaptation of light compensating lamp brightness is adjusted with a bit
Section, improves the camera imaging effect of mobile terminal.
Brief description of the drawings
Fig. 1 is that the light compensation method of taking pictures of mobile terminal provided in an embodiment of the present invention realizes flow chart；
Fig. 2 is that the light compensation method S102 that takes pictures of mobile terminal provided in an embodiment of the present invention implements flow chart；
Fig. 3 is the position view of light compensating lamp provided in an embodiment of the present invention；
Fig. 4 is that the light compensation method of taking pictures of the mobile terminal that another embodiment of the present invention is provided realizes flow chart；
Fig. 5 is that the light compensation method of taking pictures of the mobile terminal that another embodiment of the present invention is provided realizes flow chart；
Fig. 6 is the structured flowchart of the light compensating apparatus of taking pictures of mobile terminal provided in an embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
What Fig. 1 showed the light compensation method of taking pictures of mobile terminal provided in an embodiment of the present invention realizes flow, and details are as follows：
In S101, triggering photodiode work.
Wherein, photodiode (also referred to as photodiode) is a kind of optical detection that can convert the light to voltage signal
Device, its tube core is often using a PN junction with photosensitive feature, and the change to light is very sensitive, with unmarried electric conductivity, and
Light intensity can change electrology characteristic when different.Meanwhile, photodiode has dark current small, and low-light (level) response, sensitivity is high,
The characteristic that electric current strengthens with intensity of illumination and linearly changes, therefore, can perceive photographed scene environment using photodiode
The power of light, so as to be corresponding electrology characteristic by the intensity-conversion of ambient light.
In embodiments of the present invention, on-off circuit can be set in the light compensating lamp internal circuit configuration of mobile terminal, with
Control photodiode is in idle or working condition, so as to reach the technique effect of the working condition of control light compensating lamp.
Used as one embodiment of the present of invention, S101 is specially：
When the camera for detecting the mobile terminal runs, the photodiode work is triggered.
In the present embodiment, watcher thread can be opened on the operating system backstage of mobile terminal, monitors mobile terminal
Whether camera is in running status, once the camera for listening to mobile terminal is in running status, then begins to open accordingly
Powered-down road, so as to trigger photodiode work.
The present embodiment can realize the automatic work of light compensating lamp, manually operated without user, and mobile terminal is improved with this
Efficiency of taking pictures.
Used as another embodiment of the present invention, S101 is specially：
When default light filling instruction input is detected, the photodiode work is triggered.
In the present embodiment, light filling can be pre-set and instructs corresponding input mode, corresponding to the benefit for pre-setting
The input mode of light instruction, user can be by the physical button of mobile terminal, virtual key or by touch gestures come defeated
Enter light filling instruction, with the corresponding on-off circuit of the energy that begins, so as to trigger photodiode work.
The present embodiment can be intended to control light compensating lamp to work according to the true shooting of user, for example, the true bat of user
Take the photograph and be intended to shoot rather dark photo, then need not be input into light filling instruction, be not detected by the input of light filling instruction, photosensitive two
Level manages the work that just will not be triggered, then light compensating lamp also would not be in running order.
In S102, the voltage based on photodiode output drives the light compensating lamp work of the mobile terminal.
Because when ambient light increases, the output voltage of photodiode strengthens, and the brightness of light compensating lamp needs to weaken, because
This, the input current of light compensating lamp needs to weaken；When ambient light weakens, the output voltage of photodiode reduces, and light compensating lamp
Brightness need to increase, therefore, the input current of light compensating lamp needs to increase.Pass based on above-mentioned electrology characteristic Yu light compensating lamp brightness
System, can drive mobile terminal with the voltage of photodiode output as driving source by setting certain circuit structure
Light compensating lamp works.
As a kind of implementation example of circuit structure of the embodiment of the present invention, the circuit structure can by photodiode,
Triode and resistance are constituted, wherein：Triode is come as the late-class circuit of photodiode by the voltage of photodiode output
It is controlled to switch, when ambient light increases, the output voltage enhancing of photodiode, and the output of the inverted triode of rear class is electric
Pressure will weaken；When ambient light weakens, the output voltage of photodiode reduces, and the output voltage of the inverted triode of rear class
Will enhancing.
After the voltage for getting triode output, by setting a resistance on the circuit of light compensating lamp, by three
The magnitude of voltage of pole pipe output is removed in the resistance of the resistance, so as to get the electric current for controlling light compensating lamp brightness.
Wherein, the resistance of resistance could be arranged to less than 10 ohm, for example, the resistance for setting resistance is 4.7 ohm.
Based on foregoing circuit structure, Fig. 2 shows that S102's implements flow：
In S201, the photodiode induced environment light simultaneously exports first voltage.
In S202, control rear class to be inverted triode by the first voltage and export second voltage.
In S203, the second voltage is added on preset resistance, produce electric current.
In S204, the light compensating lamp for driving the mobile terminal using the electric current works.
In S103, the real-time luminosity produced based on the light compensating lamp is taken pictures.
It should be noted that in the present embodiment, the light compensating lamp can be arranged on the front panel of mobile terminal, such as scheme
Shown in 3, six pores in Fig. 3 are the flexible light compensating lamp being arranged on mobile terminal front panel, and movement is used for working as
When the front camera of terminal is taken pictures, play a part of light filling of taking pictures；The light compensating lamp can also be arranged on mobile terminal
Rear board on, for when being taken pictures using the rear camera of mobile terminal, playing a part of light filling of taking pictures.
In embodiments of the present invention, can be arranged on after camera function is finished, light compensating lamp be closed in time, to save
The about energy consumption of mobile terminal.
As one embodiment of the present of invention, when photodiode be run by detecting the camera of mobile terminal and
During triggering work, as shown in figure 4, after S103, methods described also includes：
S104, when the camera for detecting the mobile terminal is closed, terminates the photodiode work.
In the present embodiment, again may be by opening watcher thread on the operating system backstage of mobile terminal, monitor and move
Whether the camera of dynamic terminal switches to closed mode by running status, once the camera of mobile terminal is listened to by operation shape
State switches to closed mode, then disconnect corresponding on-off circuit, so as to terminate photodiode work, closes light compensating lamp.
The present embodiment can realize automatic, the timely closing of light compensating lamp, manually operated without user, and movement is saved with this
The energy ezpenditure of terminal.
As one embodiment of the present of invention, when photodiode is touched by detecting default light filling instruction input
During hair work, as shown in figure 5, after S103, methods described also includes：
S105, when default command for stopping input is detected, terminates the photodiode work.
In the present embodiment, the corresponding input mode of command for stopping can be pre-set, corresponding to the end for pre-setting
The input mode for only instructing, user can be by the physical button of mobile terminal, virtual key or by touch gestures come defeated
Enter command for stopping, to disconnect corresponding on-off circuit, so as to terminate photodiode work, close light compensating lamp.
The present embodiment can be intended to control light compensating lamp to work according to the true shooting of user, for example, user is shooting
After one photo, in addition it is also necessary to continue to shoot photo under the assistance of light compensating lamp, then need not be input into command for stopping, do not detect
To the input of command for stopping, photodiode just will not terminate work, then light compensating lamp also may proceed to it is in running order so that
Avoid because frequently switch on light compensating lamp and caused by the bigger energy ezpenditure of mobile terminal.
The embodiment of the present invention controls light filling by setting photodiode inside mobile terminal using photodiode
The input current of lamp, so as to control the brightness of light compensating lamp, when photodiode senses high light, then the brightness of light compensating lamp is dropped
It is low；When photodiode senses dim light, then the brightness enhancing of light compensating lamp realizes that the self adaptation of light compensating lamp brightness is adjusted with a bit
Section, improves the camera imaging effect of mobile terminal.
Corresponding to the light compensation method of taking pictures of the mobile terminal described in foregoing embodiments, Fig. 6 shows that the embodiment of the present invention is carried
The structured flowchart of the light compensating apparatus of taking pictures of the mobile terminal of confession, the device may be located inside mobile terminal, for convenience of description,
Illustrate only part related to the present embodiment.
Reference picture 6, the device includes：
Trigger element 61, triggering photodiode work.
Light filling unit 62, the voltage based on photodiode output drives the light compensating lamp work of the mobile terminal.
Photographing unit 63, the real-time luminosity produced based on the light compensating lamp is taken pictures.
Alternatively, the light filling unit 62 includes：
First subelement, for the photodiode induced environment light and exports first voltage；
Second subelement, second voltage is exported for controlling rear class to be inverted triode by the first voltage；
3rd subelement, for the second voltage to be added on preset resistance, produces electric current；
4th subelement, the light compensating lamp work for driving the mobile terminal using the electric current.
Alternatively, the resistance of the preset resistance is less than 10 ohm.
Alternatively, the trigger element 61 specifically for：
When the camera for detecting the mobile terminal runs, the photodiode work is triggered；
Then described device also includes：
First terminates unit, when the camera for detecting the mobile terminal is closed, terminates the photodiode work
Make.
Alternatively, the trigger element 61 specifically for：
When default light filling instruction input is detected, the photodiode work is triggered；
Then described device also includes：
Second terminates unit, when default command for stopping input is detected, terminates the photodiode work.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. the light compensation method of taking pictures of a kind of mobile terminal, it is characterised in that including：
Triggering photodiode work；
Voltage based on photodiode output drives the light compensating lamp work of the mobile terminal；
The real-time luminosity produced based on the light compensating lamp is taken pictures；
The voltage based on photodiode output drives the light compensating lamp of the mobile terminal to work to be included：
The photodiode induced environment light simultaneously exports first voltage；
Control rear class to be inverted triode by the first voltage and export second voltage；
The second voltage is added on preset resistance, electric current is produced；
The light compensating lamp for driving the mobile terminal using the electric current works.
2. the method for claim 1, it is characterised in that the resistance of the preset resistance is less than 10 ohm.
3. method as claimed in claim 1 or 2, it is characterised in that the triggering photodiode work includes：
When the camera for detecting the mobile terminal runs, the photodiode work is triggered；
Then methods described also includes：
When the camera for detecting the mobile terminal is closed, terminate the photodiode work.
4. method as claimed in claim 1 or 2, it is characterised in that the triggering photodiode work includes：
When default light filling instruction input is detected, the photodiode work is triggered；
Then methods described also includes：
When default command for stopping input is detected, terminate the photodiode work.
5. light compensating apparatus of taking pictures of a kind of mobile terminal, it is characterised in that including：
Trigger element, for triggering photodiode work；
Light filling unit, the voltage for being exported based on the photodiode drives the light compensating lamp work of the mobile terminal；
Photographing unit, the real-time luminosity for being produced based on the light compensating lamp is taken pictures；
The light filling unit includes：
First subelement, for the photodiode induced environment light and exports first voltage；
Second subelement, second voltage is exported for controlling rear class to be inverted triode by the first voltage；
3rd subelement, for the second voltage to be added on preset resistance, produces electric current；
4th subelement, the light compensating lamp work for driving the mobile terminal using the electric current.
6. device as claimed in claim 5, it is characterised in that the resistance of the preset resistance is less than 10 ohm.
7. the device as described in claim 5 or 6, it is characterised in that the trigger element specifically for：
When the camera for detecting the mobile terminal runs, the photodiode work is triggered；
Then described device also includes：
First terminates unit, for when the camera for detecting the mobile terminal is closed, terminating the photodiode work
Make.
8. the device as described in claim 5 or 6, it is characterised in that the trigger element specifically for：
When default light filling instruction input is detected, the photodiode work is triggered；
Then described device also includes：
Second terminates unit, for when default command for stopping input is detected, terminating the photodiode work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047656.3A CN104580745B (en) | 2015-01-29 | 2015-01-29 | Shooting light fill-in method and device of mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047656.3A CN104580745B (en) | 2015-01-29 | 2015-01-29 | Shooting light fill-in method and device of mobile terminal |
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| CN104580745A CN104580745A (en) | 2015-04-29 |
| CN104580745B true CN104580745B (en) | 2017-05-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049737B (en) * | 2015-05-20 | 2018-02-23 | 广东欧珀移动通信有限公司 | A kind of light supplement control method, device and mobile terminal |
| CN106101569A (en) * | 2016-08-22 | 2016-11-09 | 维沃移动通信有限公司 | A kind of method of light filling of taking pictures and mobile terminal |
| CN108810420A (en) * | 2017-05-03 | 2018-11-13 | 迅驰（北京）视讯科技有限公司 | Control method, system and the Car license recognition instrument of light compensating lamp |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567966A (en) * | 2008-04-21 | 2009-10-28 | 敦煌天池股份有限公司 | Surveillance camera unit with light source |
| CN103068117A (en) * | 2012-12-11 | 2013-04-24 | 青岛联盟电子仪器有限公司 | Light-emitting diode (LED) driver with lighting brightness adjustable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200536438A (en) * | 2004-04-16 | 2005-11-01 | Leadtrend Tech Corp | Flashlight control circuit |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567966A (en) * | 2008-04-21 | 2009-10-28 | 敦煌天池股份有限公司 | Surveillance camera unit with light source |
| CN103068117A (en) * | 2012-12-11 | 2013-04-24 | 青岛联盟电子仪器有限公司 | Light-emitting diode (LED) driver with lighting brightness adjustable |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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