CN110531564B - Flash lamp drive circuit and intelligent terminal - Google Patents
Flash lamp drive circuit and intelligent terminal Download PDFInfo
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- CN110531564B CN110531564B CN201910695321.0A CN201910695321A CN110531564B CN 110531564 B CN110531564 B CN 110531564B CN 201910695321 A CN201910695321 A CN 201910695321A CN 110531564 B CN110531564 B CN 110531564B
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
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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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- General Physics & Mathematics (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Stroboscope Apparatuses (AREA)
Abstract
The application discloses flash light drive circuit and intelligent terminal. The flash drive circuit includes: the driving circuit comprises a driving circuit, a first flash lamp circuit, a second flash lamp circuit and a central processing unit, wherein the input end of the first flash lamp circuit and the input end of the second flash lamp circuit are coupled with the first output end of the driving circuit, and the first flash lamp circuit emits light when the central processing unit provides a first control signal and a second control signal to the control ends of the first flash lamp circuit and the driving circuit respectively; when the central processing unit provides a third control signal and a second control signal to the second flash circuit and the control end of the driving circuit respectively, the second flash circuit emits light. Through the mode, the use of electronic components can be reduced, the circuit is simplified, and the design space of the printed circuit board can be saved.
Description
Technical Field
The application relates to the technical field of communication, in particular to a flash lamp driving circuit and an intelligent terminal.
Background
The mobile phone on the market at present generally disposes rearmounted camera flash light and leading camera flash light simultaneously, and two kinds of light sources all adopt emitting diode luminous. The rear camera flash drive circuit and the front camera flash drive circuit are different in working current, so that different drive circuits are adopted for the rear camera flash drive circuit and the front camera flash drive circuit, different electronic components need to be carried in the rear camera flash drive circuit and the front camera flash drive circuit, and the cost is high.
Disclosure of Invention
The main technical problem who solves of this application provides a flash light drive circuit and intelligent terminal, can reduce electronic components's use, saves printed circuit board's design space to reach the purpose of practicing thrift the cost.
In order to solve the technical problem, the application adopts a technical scheme that: there is provided a flash drive circuit including: the driving circuit is provided with a first output end; the input end of the first flash lamp circuit and the input end of the second flash lamp circuit are coupled with the first output end, and the output end of the first flash lamp circuit and the output end of the second flash lamp circuit are grounded; the central processing unit is coupled with the control end of the driving circuit, the control end of the first flash lamp circuit and the control end of the second flash lamp circuit; when the central processing unit respectively provides a first control signal and a second control signal to the control ends of the first flash lamp circuit and the driving circuit, the first flash lamp circuit emits light; when the central processing unit provides a third control signal and a second control signal to the second flash circuit and the control end of the driving circuit respectively, the second flash circuit emits light.
The first flash lamp circuit comprises a first switch and a first light emitting diode, the input end of the first switch is coupled with a first output end, the control end of the first switch is coupled with the central processing unit, the output end of the first switch is connected with the anode of the first light emitting diode, and the cathode of the first light emitting diode is grounded; the second flash lamp circuit comprises a second switch and a second light emitting diode, wherein the input end of the second switch is coupled with the first output end, the control end of the second switch is coupled with the central processing unit, the output end of the second switch is connected with the anode of the second light emitting diode, and the cathode of the second light emitting diode is grounded.
The first switch is a first N-MOS tube, the source electrode of the first N-MOS tube is connected with the anode of the first light-emitting diode, the drain electrode of the first N-MOS tube is connected with the first output end, and the grid electrode of the first N-MOS tube is coupled with the central processing unit; the second switch is a second N-MOS tube, the source electrode of the second N-MOS tube is connected with the anode of the second light-emitting diode, the drain electrode of the second N-MOS tube is connected with the first output end, and the grid electrode of the second N-MOS tube is coupled with the central processing unit.
The driving circuit is further provided with a first input end, and the central processing unit is coupled with the first input end and inputs a pulse width modulation wave to the first input end so as to adjust the current of the first flash lamp circuit or the second flash lamp circuit.
The driving circuit is also provided with a second input end, the central processing unit is coupled with the second input end, and the second flash lamp circuit is in a flashlight flash mode when the central processing unit inputs high potential to the second input end.
The flash lamp driving circuit is also provided with a first ceramic capacitor; the first end of the first ceramic capacitor is coupled to a power supply and connected to a power input end of the driving circuit, and the second end of the first ceramic capacitor is grounded.
The flash lamp driving circuit is also provided with a second ceramic capacitor; the first end of the second ceramic capacitor is connected with the first end of the first ceramic capacitor and the power input end of the driving circuit, and the second end of the second ceramic capacitor is grounded.
Wherein, the power supply is a direct current power supply, the capacitance value of the first ceramic capacitor is 0.5-1.5uF, and the capacitance value of the second ceramic capacitor is 30-35 pF.
The central processing unit is coupled to the driving circuit, the first flash lamp circuit and the second flash lamp circuit through the general input/output interface.
In order to solve the above technical problem, another technical solution adopted by the present application is: the utility model provides an intelligent terminal, this intelligent terminal include flash lamp drive circuit, flash lamp drive circuit includes: the driving circuit is provided with a first output end; the input end of the first flash lamp circuit and the input end of the second flash lamp circuit are coupled with the first output end, and the output end of the first flash lamp circuit and the output end of the second flash lamp circuit are grounded; the central processing unit is coupled with the control end of the driving circuit, the control end of the first flash lamp circuit and the control end of the second flash lamp circuit; when the central processing unit respectively provides a first control signal and a second control signal to the control ends of the first flash lamp circuit and the driving circuit, the first flash lamp circuit emits light; when the central processing unit provides a third control signal and a second control signal to the second flash circuit and the control end of the driving circuit respectively, the second flash circuit emits light.
The beneficial effect of this application is: the utility model provides a flash lamp drive circuit includes drive circuit, first flash lamp circuit and second flash lamp circuit, central processing unit, and the first output through letting the input of first flash lamp circuit and second flash lamp circuit couple drive circuit for a drive circuit is shared to first flash lamp circuit and second flash lamp circuit, reduces electronic components's use, also can save printed circuit board's design space. The central processing unit is coupled with the control end of the driving circuit, the control end of the first flash lamp circuit and the control end of the second flash lamp circuit to respectively control the first flash lamp circuit and the second flash lamp circuit to emit light, so that the effect of driving the first flash lamp circuit and the second flash lamp circuit can be realized, and the design cost can be further saved.
Drawings
FIG. 1 is a schematic diagram of a flash driving circuit according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of an embodiment of a flash driver circuit according to the present application;
fig. 3 is a schematic structural diagram of an embodiment of an intelligent terminal according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
With the continuous improvement of requirements of people on photographing effects, some mobile terminals are provided with front and rear cameras, in order to improve the quality of photos, each camera is provided with a flash lamp, the design of the front and rear flash lamps appears on some high-end mobile phones, the driving modes of the front and rear flash lamps are generally independently driven, and the realization method on a mobile phone mainboard is to use one set of driving circuit for each of the front and rear flash lamps.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a flash lamp driving circuit according to an embodiment of the present application, the flash lamp driving circuit including: a driving circuit 11, a first flash circuit 12, a second flash circuit 13 and a central processing unit 14.
The driving circuit 11 is provided with a first output terminal for outputting a control signal. An input of the first flash circuit 12 and an input of the second flash circuit 13 are coupled to a first output of the driver circuit 11. The output terminal of the first flash circuit 12 and the output terminal of the second flash circuit 13 are grounded. Namely, the first flash circuit 12 and the second flash circuit 13 share one driving circuit 11, so that the circuit structure is simplified, the area of the mainboard is saved, and certain cost of the mainboard is saved. In a specific embodiment, the driving circuit 11 is a light emitting diode flash driver.
The cpu 14 is coupled to the control terminal of the driving circuit 11, the control terminal of the first flash circuit 12, and the control terminal of the second flash circuit 13. When the flash lamp works, the central processing unit 14 provides a first control signal to the control end of the first flash lamp circuit 12, and meanwhile, the central processing unit 14 provides a second control signal to the control end of the driving circuit 11, so that the first flash lamp circuit 12 emits light; the central processing unit 14 provides a third control signal to the control terminal of the second flash circuit 13, and the second flash circuit 13 emits light when the central processing unit 14 provides the second control signal to the driving circuit 11. The driving of the first flash circuit 12 and the second flash circuit 13 is controlled by the central processing unit 14. In the present embodiment, the first flash circuit 12 and the second flash circuit 13 do not emit light at the same time.
Optionally, the central processing unit 14 is coupled to the control terminal of the driving circuit 11, the control terminal of the first flash circuit 12, and the control terminal of the second flash circuit 13 through a general-purpose input/output interface. The central processor 14 may be an intelligent terminal platform chip.
The application provides a flash drive circuit is through letting the first output of the input coupling drive circuit 11 of first flash circuit 12 and second flash circuit 13 for drive circuit 11 is shared to first flash circuit 12 and second flash circuit 13, reduces electronic components's use, also can save printed circuit board's design space. The central processing unit 14 is coupled to the control terminal of the driving circuit 11, the control terminal of the first flash circuit 12, and the control terminal of the second flash circuit 13 to control the first flash circuit 12 and the second flash circuit 13 to emit light, so as to achieve the effect of driving the first flash circuit 12 and the second flash circuit 13 and further save the design cost.
Referring to fig. 2, fig. 2 is a schematic circuit diagram of a flash driving circuit according to an embodiment of the present invention, the flash driving circuit includes a driving circuit 21, a first flash circuit 22, a second flash circuit 23, and a central processing unit (not shown). The cpu is coupled to the control terminal of the driving circuit 21, the control terminal of the first flash circuit 22, and the control terminal of the second flash circuit 23 through the general-purpose input/output interface.
The central processing unit is coupled to the control terminal of the driving circuit 21 through the general input/output interface GPIO1, and provides a second control signal to the driving circuit 21, so that the driving circuit 21 performs constant current output. The driving circuit 21 is provided with a first output terminal, an input terminal of the first flash circuit 22 is coupled to the first output terminal, and an output terminal of the first flash circuit 22 is grounded. Specifically, the first flash circuit 22 includes a first switch Q1 and a first light emitting diode LED1, an input terminal of the first switch Q1 is coupled to a first output terminal of the driving circuit 21, and the central processing unit is coupled to a control terminal of the first switch Q1 through an input/output interface GPIO5 to provide a first control signal to the control terminal of the first switch Q1 to control the on/off of the first switch Q1. The output terminal of the first switch Q1 is connected to the anode of the first light emitting diode LED1, and the cathode of the first light emitting diode LED1 is grounded. In this embodiment, the central controller provides the second control signal to the driving circuit 21 to enable the driving circuit 21 to output a constant current to the first flash circuit 22, and provides the first control signal to the first switch Q1 to enable the first switch Q1 to be turned on, so as to drive the first light emitting diode LED1 to emit light.
In this embodiment, the first switch Q1 is a first N-MOS transistor, a source of the first N-MOS transistor is connected to an anode of the first light emitting diode LED1, a drain of the first N-MOS transistor is connected to the first output terminal, and a gate of the first N-MOS transistor is coupled to the cpu through the GPIO 5. When the central processing unit configures the general input/output interface GPIO1 to a high potential, the driving circuit 21 outputs a constant current to the first flash lamp circuit 22, and when the central processing unit configures the general input/output interface GPIO5 to a high potential, the first N-MOS transistor is turned on, and at this time, the first light emitting diode LED1 emits light.
In a specific embodiment, the maximum power of the first N-MOS transistor is 400mW, and the maximum passing current is 500 mA. The first LED1 may be a white LED with a voltage drop of 2.3-3V. In other alternative embodiments, the first LED1 may also be a red LED, a blue LED, etc. and the user may set the first LED specifically according to the actual use requirement.
An input terminal of the second flash circuit 23 is coupled to the first output terminal of the driving circuit 21, and an output terminal of the second flash circuit 23 is grounded. Specifically, the second flash circuit 23 includes a second switch Q2 and a second light emitting diode LED2, an input terminal of the second switch Q2 is coupled to the first output terminal, the cpu is coupled to a control terminal of the second switch Q2 through an input/output interface GPIO4 to provide a third control signal to the control terminal of the second switch Q2 to control the on/off of the second switch Q2, an output terminal of the second switch Q2 is connected to an anode of the second light emitting diode LED2, and a cathode of the second light emitting diode LED2 is grounded. In this embodiment, the central controller drives the second light emitting diode LED2 to emit light by supplying the second control signal to the driving circuit 21 to make the driving circuit 21 perform a constant current output to the second flash circuit 23, and by supplying the third control signal to the second switch Q2 to make the second switch Q2 be turned on.
In this embodiment, the second switch Q2 is a second N-MOS transistor, a source of the second N-MOS transistor is connected to an anode of the second light emitting diode LED2, a drain of the second N-MOS transistor is connected to the first output terminal, and a gate of the second N-MOS transistor is coupled to the cpu through the GPIO 4. When the central processing unit configures the general input/output interface GPIO1 to be at a high potential, the driving circuit 21 outputs a constant current to the second flash circuit 23, and when the central processing unit configures the general input/output interface GPIO4 to be at a high potential, the second N-MOS transistor is turned on, and at this time, the second light emitting diode LED2 emits light.
In a specific embodiment, the maximum power of the second N-MOS transistor is 400mW, and the maximum passing current is 500 mA. The second LED2 may be a white LED with a voltage drop of 3-3.6V. In other alternative embodiments, the second LED2 may also be a red LED, a blue LED, etc. and the user may set the second LED specifically according to the actual use requirement.
The first N-MOS tube and the second N-MOS tube can be N-MOS tubes of the same type or N-MOS tubes of different types. Preferably, the first N-MOS tube and the second N-MOS tube can be different N-MOS tubes so as to save the cost of components.
Further, the driving circuit 21 is further provided with a first input terminal, the central processing unit is coupled to the first input terminal through the general purpose input/output interface GPIO3, and inputs the pulse width modulation wave to the first input terminal, and determines the output current according to the pulse number of the input pulse width modulation wave, thereby adjusting the current magnitude of the first flash circuit 22 or the second flash circuit 23.
Preferably, the driving circuit 21 is further provided with a second input terminal, the central processing unit is coupled to the second input terminal through the general purpose input/output interface GPIO2, and when the central processing unit inputs a high voltage to the second input terminal, the second flash circuit 23 is in a flashlight flash mode.
The driving circuit 21 may be provided with a first ceramic capacitor C1, a first terminal of the first ceramic capacitor C1 is used for coupling to a power supply and is connected to a power input terminal in the driving circuit 21, and a second terminal of the first ceramic capacitor C1 is grounded. The first ceramic capacitor C1 is used for voltage stabilizing and filtering, and the capacitance value of the first ceramic capacitor C1 is 0.5-1.5uF, preferably 1 uF.
The driving circuit 21 may further include a second ceramic capacitor C2, a first terminal of the second ceramic capacitor C2 is connected to the first terminal of the first ceramic capacitor C1 and a power input terminal of the driving circuit 21, and a second terminal of the second ceramic capacitor C2 is grounded. The second ceramic capacitor C2 is used for filtering radio frequency interference, and the capacitance value of the second ceramic capacitor C2 is 30-35pF, preferably 33 pF.
The application provides a flash drive circuit, including drive circuit 21, first flash circuit 22 and second flash circuit 23, central processing unit, through letting the first output that drive circuit 21 is coupled to first flash circuit 22 and the input of second flash circuit 23 for drive circuit 21 is shared to first flash circuit 22 and second flash circuit 23, reduces electronic components's use. The central processing unit is coupled to the control terminal of the driving circuit 21, the control terminal of the first flash circuit 22 and the control terminal of the second flash circuit 23 to control the first flash circuit 22 and the second flash circuit 23 to emit light, so that the effects of driving the first flash circuit 22 and the second flash circuit 23 can be achieved, and the design cost can be further saved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an intelligent terminal according to the present application, where the intelligent terminal includes a housing 31 and a flash driving circuit 32, the flash driving circuit 32 is located in the housing 31, and the flash driving circuit 32 is a flash driving circuit according to any of the above embodiments.
The intelligent terminal comprises intelligent equipment such as a PC (personal computer), a tablet personal computer and a smart phone.
Specifically, the flash drive circuit 32 includes: the driving circuit, the first flash lamp circuit, the second flash lamp circuit and the central processing unit.
The driving circuit is provided with a first output end for outputting a control signal. The input end of the first flash lamp circuit and the first end of the second flash lamp circuit are coupled with the first output end of the driving circuit. The first flash lamp circuit and the second flash lamp circuit share one driving circuit, so that the circuit is simplified, the area of a mainboard is saved, and certain mainboard cost is saved.
The input end of the first flash lamp circuit and the input end of the second flash lamp circuit are coupled with the first output end, and the output end of the first flash lamp circuit and the output end of the second flash lamp circuit are grounded.
The central processing unit is coupled with the control end of the driving circuit, the control end of the first flash lamp circuit and the control end of the second flash lamp circuit. When the flash lamp works, the central processing unit provides a first control signal to the control end of the first flash lamp circuit, and simultaneously provides a second control signal to the control end of the driving circuit, so that the first flash lamp circuit emits light; the central processing unit provides a third control signal to the control end of the second flash circuit, and the second flash circuit emits light when the central processing unit provides the second control signal to the driving circuit. In this embodiment, the first flash circuit and the second flash circuit do not emit light simultaneously.
The intelligent terminal comprises a flash lamp driving circuit 32, the flash lamp driving circuit 32 comprises a driving circuit, a first flash lamp circuit and a second flash lamp circuit, a central processing unit, and a first output end which is coupled with the input end of the first flash lamp circuit and the input end of the second flash lamp circuit and is connected with the driving circuit, so that the first flash lamp circuit and the second flash lamp circuit share one driving circuit, the use of electronic components is reduced, and the design space of a printed circuit board can be saved. The central processing unit is coupled with the control end of the driving circuit, the control end of the first flash lamp circuit and the control end of the second flash lamp circuit to respectively control the first flash lamp circuit and the second flash lamp circuit to emit light, so that the effect of driving the first flash lamp circuit and the second flash lamp circuit can be realized, and the design cost can be further saved.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (9)
1. A flash drive circuit, comprising:
a drive circuit provided with a first output terminal;
the input end of the first flash lamp circuit and the input end of the second flash lamp circuit are coupled with the first output end, and the output end of the first flash lamp circuit and the output end of the second flash lamp circuit are grounded;
the central processing unit is coupled with the control end of the driving circuit, the control end of the first flash lamp circuit and the control end of the second flash lamp circuit; when the central processing unit respectively provides a first control signal and a second control signal to the control ends of the first flash lamp circuit and the driving circuit, the first flash lamp circuit emits light; when the central processing unit respectively provides a third control signal and the second control signal to the second flash lamp circuit and the control end of the driving circuit, the second flash lamp circuit emits light;
the driving circuit is further provided with a first input end, and the central processing unit is coupled to the first input end and inputs a pulse width modulation wave to the first input end, so that the current of the first flash lamp circuit or the second flash lamp circuit is adjusted.
2. The flash driver circuit of claim 1,
the first flash lamp circuit comprises a first switch and a first light emitting diode, the input end of the first switch is coupled with the first output end, the control end of the first switch is coupled with the central processing unit, the output end of the first switch is connected with the anode of the first light emitting diode, and the cathode of the first light emitting diode is grounded;
the second flash lamp circuit comprises a second switch and a second light emitting diode, the input end of the second switch is coupled with the first output end, the control end of the second switch is coupled with the central processing unit, the output end of the second switch is connected with the anode of the second light emitting diode, and the cathode of the second light emitting diode is grounded.
3. The flash driver circuit of claim 2,
the first switch is a first N-MOS tube, the source electrode of the first N-MOS tube is connected with the anode of the first light-emitting diode, the drain electrode of the first N-MOS tube is connected with the first output end, and the grid electrode of the first N-MOS tube is coupled with the central processing unit;
the second switch is a second N-MOS tube, the source electrode of the second N-MOS tube is connected with the anode of the second light-emitting diode, the drain electrode of the second N-MOS tube is connected with the first output end, and the grid electrode of the second N-MOS tube is coupled with the central processing unit.
4. The flash driver circuit of claim 2,
the driving circuit is further provided with a second input end, the central processing unit is coupled with the second input end, and when the central processing unit inputs a high potential to the second input end, the second flash lamp circuit is in a flashlight flash mode.
5. The flash driver circuit of claim 2,
the flash lamp driving circuit is also provided with a first ceramic capacitor;
the first end of the first ceramic capacitor is coupled with a power supply and connected to a power input end in the driving circuit, and the second end of the first ceramic capacitor is grounded.
6. The flash driver circuit of claim 5,
the flash lamp driving circuit is also provided with a second ceramic capacitor;
the first end of the second ceramic capacitor is connected with the first end of the first ceramic capacitor and the power input end of the driving circuit, and the second end of the second ceramic capacitor is grounded.
7. The flash driver circuit of claim 6,
the power supply is a direct-current power supply, the capacitance value of the first ceramic capacitor is 0.5-1.5uF, and the capacitance value of the second ceramic capacitor is 30-35 pF.
8. The flash driver circuit of claim 3,
the central processing unit is coupled to the driving circuit, the first flash lamp circuit and the second flash lamp circuit through a general input/output interface.
9. The utility model provides an intelligent terminal, its characterized in that, intelligent terminal includes the flash drive circuit, the flash drive circuit includes:
a drive circuit provided with a first output terminal;
the input end of the first flash lamp circuit and the input end of the second flash lamp circuit are coupled with the first output end, and the output end of the first flash lamp circuit and the output end of the second flash lamp circuit are grounded;
the central processing unit is coupled with the control end of the driving circuit, the control end of the first flash lamp circuit and the control end of the second flash lamp circuit; when the central processing unit respectively provides a first control signal and a second control signal to the control ends of the first flash lamp circuit and the driving circuit, the first flash lamp circuit emits light; when the central processing unit respectively provides a third control signal and the second control signal to the second flash lamp circuit and the control end of the driving circuit, the second flash lamp circuit emits light; the driving circuit is further provided with a first input end, and the central processing unit is coupled to the first input end and inputs a pulse width modulation wave to the first input end, so that the current of the first flash lamp circuit or the second flash lamp circuit is adjusted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910695321.0A CN110531564B (en) | 2019-07-30 | 2019-07-30 | Flash lamp drive circuit and intelligent terminal |
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| CN201910695321.0A CN110531564B (en) | 2019-07-30 | 2019-07-30 | Flash lamp drive circuit and intelligent terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113973163A (en) | 2020-07-23 | 2022-01-25 | 北京小米移动软件有限公司 | Image acquisition module, electronic device, image acquisition method and storage medium |
| CN112034665B (en) * | 2020-09-15 | 2022-05-17 | Oppo（重庆）智能科技有限公司 | Flash lamp assembly and electronic equipment |
| CN113873122A (en) * | 2021-09-26 | 2021-12-31 | 广东天波信息技术股份有限公司 | Independent flash control method, system and device for double-flash camera and storage medium |
| CN114286467B (en) * | 2022-01-25 | 2023-12-22 | 维沃移动通信有限公司 | Flash lamp circuit, control method, electronic device, and readable storage medium |
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| CN110531564A (en) | 2019-12-03 |
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