CN100381933C - Flash lamp strength regulation system and method - Google Patents
Flash lamp strength regulation system and method Download PDFInfo
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- CN100381933C CN100381933C CNB200310119403XA CN200310119403A CN100381933C CN 100381933 C CN100381933 C CN 100381933C CN B200310119403X A CNB200310119403X A CN B200310119403XA CN 200310119403 A CN200310119403 A CN 200310119403A CN 100381933 C CN100381933 C CN 100381933C
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Abstract
The present invention relates to a flash lamp intensity regulating system used in an image pick-up device. The flash lamp intensity regulating system comprises a control module and an intensity calculating module, wherein the control module generates a first image sensing signal to a sensitizing element after a focusing module completes the regulation of focus length so as to trigger the sensitizing element to sense external images for generating first sensitizing information. Afterwards, the control module generates a pre-flashing signal to a flash lamp to make the flash lamp emit flashing according to first fixed power, and after the action is completed, the control module generates a second image sensing signal to the sensitizing element to trigger the sensitizing element to sense the external images under the flashing caused by the first power for generating second sensitizing information. The intensity calculating module carries out intensity calculation of the flash lamp according to the first sensitizing information and the second sensitizing information to obtain second power. The flash lamp emits flashing according to the second power to make the image pick-up device obtain an external image with optimized exposure of a main flash lamp by picking up the flashing caused by the second power.
Description
Technical field
The present invention relates to a kind of flash light intensity Adjustment System and method, particularly can carry out the System and method for that flash light intensity is adjusted at the focusing main body about a kind of.
Background technology
Known image capture unit can utilize flashlamp to carry out the brightness reinforcement when carrying out the darker image capture of environment light source.But the light intensity that early stage flashlamp is exported is for fixing, no matter light source is strong or weak promptly, the distance of image or near, all sends the light of certain intensity.Therefore, the flash of light of constant intensity makes that the lightness of pick-up image and contrast often are not as the good flash effect that has as user's expection.
Along with the development of technology, develop out flash unit with intensity adjustment.The early strength adjusting gear is before the shutter of image capture unit is pressed, and utilizes flashlamp to carry out preflashing one time earlier.Then capture the preflashing light intensity of image feedback at that time, cooperate inner logical circuit to calculate suitable flash light intensity again by a photo-coupler.Flashlamp then flashes according to the intensity that calculates.Photo-coupler feedback and pre flashing of flash lamp are to carry out at one time, flashlamp must continue luminous in photo-coupler stored charge (being proportional to light quantity) reach a fixed amount.Thus, the flash of light that the power of light source was sent varying strength arround flashlamp just can cooperate makes that the effect of pick-up image is more many than before not having a flashlamp progress of photo-coupler.But above-mentioned flash light intensity adjusting gear is to cooperate expensive photo-coupler, so price is high.In addition, photo-coupler is to carry out the flash intensity analysis at whole environment of finding a view, and whether the flash effect of analyzing that focuses on the center that integral body finds a view is correct.Therefore when the main body (back claims the main body of focusing) of acquisition during in pick-up image for non-when being positioned at the central point that integral body finds a view, the flash effect that main body obtained of then focusing is still undesirable.
Own evolution of epoch at present owing to have a photo-sensitive cell in the digital image pick-up, itself promptly has sensing by the function of the light intensity of pick-up image to the epoch of digital image pick-up.Therefore in the epoch of digital image acquiring, the photo-coupler in the known flash light intensity adjusting gear just need not exist.And the system and method that the flash light intensity that is adopted in digital image pick-up is adjusted has two United States Patent (USP)s to be disclosed, first United States Patent (USP) the 6th, 151 at present, No. 073 (then be called for short, 073 patent), it two is United States Patent (USP)s the 5th, 345, No. 203 (be called for short the back, 203 patents).
See also Fig. 1, Fig. 1 is known method for adjusting intensity of flash lamp process flow diagram.In the design of known image capture unit, comprise a capture button 50 usually.It is that no pressed state, S1 then are the total head state for pushing half state, S2 that 50 designs of capture button have three pressing positions, S0.When capture button 50 was in the S0 position, representing image capture unit was holding state, does not carry out any action.When capture button 50 is pressed into the S1 position, then known image capture unit will be focused.When being pressed into the S2 position, known image capture unit will flash (required according to circumstances) and the while pick-up image.Known method for adjusting intensity of flash lamp then is to utilize the main body of will focusing when being pressed into the S1 position to focus earlier.After focusing finishes, then find a view once more again according to circumstances or keep former scape, and press the capture button fully to the S2 position after finishing in finding a view.At this moment, flashlamp begins to carry out the intensity adjustment of flashlamp, and carries out image capture when flashing after the adjustment.Comprehensively the above can put known method for adjusting intensity of flash lamp in order following listed step;
Step S10: beginning.
Step S12: push of the focusing action of capture button 50 to S1 positions with the main body of focusing.
Step S14: find a view again (or keeping former scape), and push capture button 50 to S2 positions.
Step S18: carry out the flash light intensity adjustment.
Step S20: send adjusted flash of light and pick-up image.
Aspect the flash light intensity set-up procedure, 073 patent is to carry out pre flashing of flash lamp twice by flashlamp earlier.Photo-sensitive cell then respectively in twice preflashing sensing at that time by the light intensity of pick-up image, and analyze according to this and must be on predetermined strength the luminous intensity of the corresponding needs of flashlamp.203 patents then be with twice preflashing be revised as preflashing, once under flash of light not direct sensing by pick-up image.Above-mentioned two disclosed technology of patent, improved and do not had problems such as flash light intensity Adjustment System and photo-coupler costliness, but just carried out the flash intensity adjustment by pick-up image at whole owing to be still before pick-up image, therefore the focusing main body is not when being positioned at the center when finding a view, and the flash effect that main body obtained is still not good.For instance, when desire was taken a portrait, the main body of then focusing was a human body, therefore can focus to human body earlier.But attractive in appearance for integral body acquisition influence, may not be the focusing of putting when focusing with human body, and skew to some extent.At this moment, because known flash light intensity adjustment is to carry out the intensity adjustment at whole finding a view, therefore, adjusted flash intensity may be the scenery around being suitable for, and the flash effect that human body obtained not is the best.
Summary of the invention
Therefore, a purpose of the present invention provides a kind of flash light intensity Adjustment System, can be suitable at by pick-up image and arround light source adjust the intensity of flashlamp, improve known techniques and only have the fixedly problem of flash intensity.
Another object of the present invention provides a kind of flash light intensity Adjustment System, is applied in the digital image pick-up, to replace the known techniques of using photo-coupler, effectively reduces cost.
Another object of the present invention provides a kind of flash light intensity Adjustment System, can be suitable at by the focusing main body of pick-up image and arround light source adjust the intensity of flashlamp, improve known techniques and only carry out the problem that intensity is adjusted, make the flash effect optimization of focusing main body at whole pick-up image.
Above-mentioned purpose of the present invention is realized by following technical scheme.
A kind of flash light intensity Adjustment System that is applied in the image capture unit, this image capture unit comprises a flashlamp, a photo-sensitive cell and a focusing module, this flashlamp is in order to send the flash of light of multiple intensity, this photo-sensitive cell is in order to the sensitization intensity of sensing one external image, this Focusing module is in order to carry out the focal length adjustment to a focusing main body in this external image, and the feature of this flash light intensity Adjustment System is to comprise:
One control module in order to finish the focal length adjustment at this Focusing module after, produces one first image sensing signal to this photo-sensitive cell and produces one first sensitization data to trigger this external image of this photosensitive elements sense;
Produce a pre-glitch to this flashlamp, this flashlamp is flashed with one first power; And
Produce one second image sensing signal to this photo-sensitive cell with trigger this photosensitive elements sense under the flash of light that this first power causes this external image and produce one second sensitization data; And
One intensity computing module in order to according to this first sensitization data, this second sensitization data and this first power, carries out a flash light intensity calculation procedure and obtains the one second required power of flash of light that flashlamp sends a desirable strength;
Wherein when this image capture unit captured this external image, this flashlamp flashed according to this second power.
Described flash light intensity Adjustment System is characterized in that: this Focusing module is that at least one pair of focus is set.
Described flash light intensity Adjustment System is characterized in that: when carrying out the focal length adjustment, this focusing main body is positioned at this focusing of this Focusing module, when this image capture unit acquisition external image, and then non-this focusing that is positioned at of this focusing main body.
Described flash light intensity Adjustment System is characterized in that: this photo-sensitive cell is to comprise a plurality of picture elements, the light intensity of being experienced with this external image of sensing.
Described flash light intensity Adjustment System, it is characterized in that: this first sensitization data is this focusing main body when preflashing not by the light intensity of this photo-sensitive cell institute sensing, this second sensitization data be this focusing main body after preflashing by the light intensity of this photo-sensitive cell institute sensing.
Described flash light intensity Adjustment System is characterized in that: this intensity computing module is relatively this first sensitization data and this second sensitization data and obtain a ratio.
Described flash light intensity Adjustment System is characterized in that: this intensity computing module is this required when calculating the flash of light that this flashlamp sends an ideal tensile strength by this ratio second power.
Described flash light intensity Adjustment System is characterized in that: this photo-sensitive cell adopts an element that is selected from the group of being made up of a charge coupled device, a complementary metal oxide semiconductor (CMOS) and a photo-coupler.
The present invention also provides a kind of method for adjusting intensity of flash lamp that is applied in the image capture unit, this image capture unit comprises a flashlamp, a photo-sensitive cell and a focusing module, this flashlamp is in order to send the flash of light of multiple intensity, this photo-sensitive cell is in order to the sensitization intensity of sensing one external image, this external image comprises a focusing main body, this Focusing module is in order to carry out the focal length adjustment to this focusing main body, and the feature of this method for adjusting intensity of flash lamp is to comprise:
After finishing focal length and adjusting, this external image of sensing and produce one first sensitization data;
Flash with one first power;
Sensing this external image under the flash of light that this first power causes, and then produce one second sensitization data: and
According to this first sensitization data and this second sensitization data, carry out a flash light intensity calculation procedure and obtain the one second required power of flash of light that flashlamp sends a desirable strength; And
Flash according to this second power, and acquisition this external image under the flash of light that this second power causes.
Described method for adjusting intensity of flash lamp is characterized in that: when carrying out the focal length adjustment, this focusing main body is positioned at a focusing of this Focusing module, when this image capture unit acquisition external image, and then non-this focusing that is positioned at of this focusing main body.
Described method for adjusting intensity of flash lamp is characterized in that: this photo-sensitive cell comprises the light intensity that a plurality of picture elements are experienced with this external image of sensing.
Described method for adjusting intensity of flash lamp, it is characterized in that: this first sensitization data is this focusing main body when preflashing not by the light intensity of this photo-sensitive cell institute sensing, this second sensitization data be this focusing main body after preflashing by the light intensity of this photo-sensitive cell institute sensing.
Described method for adjusting intensity of flash lamp is characterized in that: this flash light intensity calculation procedure is relatively this first sensitization data and this second sensitization data and obtain a ratio.
Described method for adjusting intensity of flash lamp is characterized in that: this flash light intensity calculation procedure is this required when calculating the flash of light that this flashlamp sends an ideal tensile strength by this ratio second power.
The invention has the advantages that:
The present invention be directed in focusing and the time carry out the control of flash light intensity, so the intensity of flashlamp can be adjusted to the most suitable focusing subjective situation, be to carry out flash light intensity control when the pick-up image compared to known techniques, obviously has preferable flash effect.
Can be further understood by the following detailed description and accompanying drawings about the advantages and spirit of the present invention.
Description of drawings
Fig. 1 is known method for adjusting intensity of flash lamp process flow diagram.
Fig. 2 is the synoptic diagram of image capture unit of the present invention and external image.
Fig. 3 is the histogram analysis synoptic diagram of the first sensitization data and the second sensitization data.
Fig. 4 is the process flow diagram of flash intensity method of adjustment of the present invention.
Embodiment
See also Fig. 2, Fig. 2 is the synoptic diagram of image capture unit 10 of the present invention and external image 20.The present invention discloses a kind of image capture unit 10, in order to capture an external image 20.External image 20 comprises a focusing main body 210, and 10 of image capture units comprise a photo-sensitive cell 102, a flashlamp 104, a focusing module 106, a capture button 108 (not showing among Fig. 2) and a flash light intensity Adjustment System 110.
Photo-sensitive cell 102, as charge coupled device (Charge Couple Device, CCD), complementary metal oxide semiconductor (CMOS) (Complementary Metal Oxide Semiconductor, CMOS) etc., be ability with the extraneous light of sensing, so fechtable external image 20.As the application in the traditional analog image capture unit, then photo-sensitive cell is to adopt aforesaid photo-coupler.Flashlamp 104 is when external light source is not enough, in order to the flash of light of sending multiple intensity with the reinforcement external light source.
Focusing module 106, in order to carry out the focal length adjustment, smudgy after image capture unit 10 acquisitions to avoid external image 20 at focusing main body 210.108 of capture buttons are provided with S0, S1, three pressing positions of S2, and S0 is that no pressed state, S1 then are the total head state for pushing half state, S2.When this capture button was in the S0 position, representing image capture unit was holding state, does not carry out any action.When this capture button is pressed into the S1 position, then image capture unit will be focused.When being pressed into the S2 position, digital image pick-up will flash (required according to circumstances) and the while pick-up image.The focal modes that Focusing module 106 adopted of image capture unit 10 has various modes such as central point focusing and multi-spot.The central point focusing promptly is to utilize whole central point of finding a view to focus; If be multi-spot, then be in integral body is found a view, to list many focusings, select by the user to focus again behind the point of desire focusing.Following examples are to adopt central point focusing mode.
Emphasis of the present invention then is the intensity Adjustment System 110 of flashlamp 104, and it has comprised a control module 112 and an intensity computing module 114.A difference of the present invention and known techniques, be that known techniques is to carry out the intensity adjustment of flashlamp (the capture button is to be in the S2 position) when pick-up image, the present invention then is when focusing, and carries out the intensity adjustment (the capture button is in the S1 position) of flashlamp.Therefore, the present invention is when the user utilizes 10 pairs of image capture units focusing main body to take the focusing action, is just carried out to focusing main body 210 (or claiming focal length adjustment) time of focusing by Focusing module 106.Control module 112 produces one first image sensing signal to photo-sensitive cell 102 and produces one first sensitization data to trigger photo-sensitive cell 102 sensing external images 20 after Focusing module 106 is finished the focal length adjustment.Because photo-sensitive cell 102 is can be further divided into a plurality of picture elements with sensing external image 20, therefore just can be sent to intensity computing module 114, through obtaining the histogram analysis (Histogram) of each picture element light intensity of external image 20 when not glistening after the statistical study at the light intensity data (i.e. the first sensitization data) of each picture element institute sensing.
Then control module 112 produces a pre-glitch to flashlamp 104, and flashlamp 104 is flashed with one first power.This first power is default flash intensity, can be designed to the lower flash of light of power to reduce the power consumption of digital image pick-up 10.When producing pre-glitch, also produce one second image sensing signal to photo-sensitive cell 102 to trigger the external image 20 of photo-sensitive cell 102 sensings under the flash of light that first power is caused.In like manner, the light intensity data of each picture element institute sensing in the photo-sensitive cell 102, i.e. one second sensitization data will be delivered to the histogram analysis that 114 statistical study of intensity computing module become the light intensity of each picture element when the preflashing.
See also Fig. 3, Fig. 3 is the histogram analysis synoptic diagram of the first sensitization data and the second sensitization data.Intensity computing module 114 then according to this first sensitization data, this second sensitization data and this first power, carries out the flash light intensity calculation procedure and obtains second power.Only be to lift a simulated data to explain the present invention among Fig. 3, wherein transverse axis is represented the sensitization intensity of picture element, and the longitudinal axis is then for having the picture element quantity of identical sensitization intensity.In histogram analysis, because the present invention carries out preflashing when focusing at the focusing main body earlier, so picture element maximum intensity that distributes promptly is the light intensity that the focusing main body is experienced.Intensity calculation procedure of the present invention is an ideal zone that preestablishes flash light intensity, and sets an ideal tensile strength in this ideal zone.Relatively behind the histogram and ideal tensile strength of the first sensitization data, the second sensitization data, first power that is consumed when sending preflashing according to flashlamp 104 again, the sensitization intensity before the preflashing and the sensitization intensity after preflashing ratio A and sensitization intensity after the preflashing and ideal tensile strength ratio B between the two between the two, required second power when promptly extrapolating draws the flash of light that flashlamp 104 sends this second intensity.Flashlamp will be according to this second power, and when the user presses soon behind the door fully, flashlamp promptly sends the flash of light of corresponding second power.Because the flash of light that this power is sent will make the focusing main body have desirable sensitization intensity, even therefore the focusing main body is not the position that is positioned at focusing at this moment, in the image capture unit institute picked image, focusing main body 210 still can obtain desirable flash effect.
Because the user utilizes image capture unit to carry out defocused to carry out between image capture may be through after a while, so the present invention can add a storer, to write down this second power.With when the user as long as do not focus again, second power that then can this record flashes before image capture, makes the focusing main body still can obtain best flash effect.In addition, control module and intensity computing module can be the outer logical circuits that is added in the image capture unit, also logical circuit existing in the image capture unit can be reequiped, and make it have the function of above-mentioned control module and intensity computing module.
Emphasize a bit that at this above-mentioned histogram analysis is a best specific embodiment of the present invention, right intensity computing module account form will not limit by this.In other specific embodiments of the present invention, also can use the light intensity that the direct sensing focusing is fed back, analyze, and the light intensity of the most suitable focusing main body of acquisition.
In addition, the foregoing description is set forth in the mode of central point focusing.If Focusing module is the mode that adopts multi-spot, then step is also identical.What the present invention emphasized focuses on: utilize the focus focusing action of main body of the set focusing of Focusing module, in this simultaneously, the focusing main body is carried out the intensity adjustment of flashlamp.Therefore when pick-up image, no matter whether the focusing main body is positioned at the position of original focusing, the focusing main body all can obtain best flash effect.
The present invention then is described in detail in detail in whole pick-up image process, carries out flash intensity control when focusing simultaneously, obviously separate to do one with known techniques.See also Fig. 4, Fig. 4 is the process flow diagram of flash intensity method of adjustment of the present invention.Comprehensive the above, can step arrangement of the present invention is as follows:
Step S30: the focusing main body 210 to external image 20 focus (capture button 108 presses on the S1 position).
Step S32: photo-sensitive cell 102 sensing external images 20 and produce one first sensitization data.
Step S34; Flashlamp 104 flashes with one first intensity.
Step S36: photo-sensitive cell 102 sensings under first intensity flash of light external image 20 and produce one second sensitization data.
Step S38: intensity computing module 114 is according to this first sensitization data and this second sensitization data, carries out a flash light intensity calculation procedure and obtains one second intensity.
Step S39: find a view again or keep former scape, and push the capture button to the S2 position.
Step S40: flashlamp 104 flashes according to this second intensity, and image capture unit then captures the external image 20 under this second intensity flash of light.
Because known techniques is to carry out the intensity adjustment of flashlamp when the capture button is positioned at the S2 position, all know and have the knack of this skill person, the acquisition of the photo-sensitive cell of known techniques be the photosensitive profile of the whole external image when taking pictures, it is therefore corresponding that what adjust will be whole external image.If focusing main body (that is the shooting body) is not in centre of finding a view or above-mentioned focusing, the flash effect that the main body of then focusing obtains not is the best.
At this shortcoming, the present invention is when the focusing main body is focused, carries out the intensity adjustment of flashlamp, finds a view afterwards again.Therefore, flash effect at whole external image adjustment, will have flash effect preferably than known techniques at the adjustment of focusing main body.
By the above detailed description of preferred embodiments, be to wish to know more to describe feature of the present invention and spirit, and be not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category of claim of being arranged in of various changes and tool equality institute of the present invention desire application.
Claims (14)
1. flash light intensity Adjustment System that is applied in the image capture unit, this image capture unit comprises a flashlamp, a photo-sensitive cell and a focusing module, this flashlamp is in order to send the flash of light of multiple intensity, this photo-sensitive cell is in order to the sensitization intensity of sensing one external image, this Focusing module is in order to carry out the focal length adjustment to a focusing main body in this external image, and the feature of this flash light intensity Adjustment System is to comprise:
One control module in order to finish the focal length adjustment at this Focusing module after, produces one first image sensing signal to this photo-sensitive cell and produces one first sensitization data to trigger this external image of this photosensitive elements sense;
Produce a pre-glitch to this flashlamp, this flashlamp is flashed with one first power; And
Produce one second image sensing signal to this photo-sensitive cell with trigger this photosensitive elements sense under the flash of light that this first power causes this external image and produce one second sensitization data; And
One intensity computing module in order to according to this first sensitization data, this second sensitization data and this first power, carries out a flash light intensity calculation procedure and obtains the one second required power of flash of light that this flashlamp sends a desirable strength;
Wherein when this image capture unit captured this external image, this flashlamp flashed according to this second power.
2. flash light intensity Adjustment System according to claim 1 is characterized in that: this Focusing module is that at least one pair of focus is set.
3. flash light intensity Adjustment System according to claim 2, it is characterized in that: when carrying out the focal length adjustment, this focusing main body is positioned at this focusing of this Focusing module, when this image capture unit acquisition external image, and then non-this focusing that is positioned at of this focusing main body.
4. flash light intensity Adjustment System according to claim 1 is characterized in that: this photo-sensitive cell is to comprise a plurality of picture elements, the light intensity of being experienced with this external image of sensing.
5. flash light intensity Adjustment System according to claim 4, it is characterized in that: this first sensitization data is this focusing main body when preflashing not by the light intensity of this photo-sensitive cell institute sensing, this second sensitization data be this focusing main body after preflashing by the light intensity of this photo-sensitive cell institute sensing.
6. flash light intensity Adjustment System according to claim 3 is characterized in that: this intensity computing module is relatively this first sensitization data and this second sensitization data and obtain a ratio.
7. flash light intensity Adjustment System according to claim 6 is characterized in that: this intensity computing module is this required when calculating the flash of light that this flashlamp sends an ideal tensile strength by this ratio second power.
8. flash light intensity Adjustment System according to claim 1 is characterized in that: this photo-sensitive cell adopts an element that is selected from the group of being made up of a charge coupled device, a complementary metal oxide semiconductor (CMOS) and a photo-coupler.
9. method for adjusting intensity of flash lamp that is applied in the image capture unit, this image capture unit comprises a flashlamp, a photo-sensitive cell and a focusing module, this flashlamp is in order to send the flash of light of multiple intensity, this photo-sensitive cell is in order to the sensitization intensity of sensing one external image, this external image comprises a focusing main body, this Focusing module is in order to carry out the focal length adjustment to this focusing main body, and the feature of this method for adjusting intensity of flash lamp is to comprise:
After finishing focal length and adjusting, this external image of sensing and produce one first sensitization data;
Flash with one first power;
Sensing this external image under the flash of light that this first power causes, and then produce one second sensitization data: and
According to this first sensitization data and this second sensitization data, carry out a flash light intensity calculation procedure and obtain the one second required power of flash of light that this flashlamp sends a desirable strength; And
Flash according to this second power, and acquisition this external image under the flash of light that this second power causes.
10. method for adjusting intensity of flash lamp according to claim 9, it is characterized in that: when carrying out the focal length adjustment, this focusing main body is positioned at a focusing of this Focusing module, when this image capture unit acquisition external image, and then non-this focusing that is positioned at of this focusing main body.
11. method for adjusting intensity of flash lamp according to claim 9 is characterized in that: this photo-sensitive cell comprises the light intensity that a plurality of picture elements are experienced with this external image of sensing.
12. method for adjusting intensity of flash lamp according to claim 11, it is characterized in that: this first sensitization data is this focusing main body when preflashing not by the light intensity of this photo-sensitive cell institute sensing, this second sensitization data be this focusing main body after preflashing by the light intensity of this photo-sensitive cell institute sensing.
13. method for adjusting intensity of flash lamp according to claim 12 is characterized in that: this flash light intensity calculation procedure is relatively this first sensitization data and this second sensitization data and obtain a ratio.
14. method for adjusting intensity of flash lamp according to claim 13 is characterized in that: this flash light intensity calculation procedure is this required when calculating the flash of light that this flashlamp sends an ideal tensile strength by this ratio second power.
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| CN100414429C (en) * | 2005-12-19 | 2008-08-27 | 佛山普立华科技有限公司 | Method for regulating brightness of flash lamp |
| CN101441386B (en) * | 2007-11-20 | 2010-09-29 | 鸿富锦精密工业（深圳）有限公司 | Photographing method and device |
| CN101726964B (en) * | 2008-10-28 | 2012-01-18 | 亚洲光学股份有限公司 | Image acquiring device and method for shifting charging capacitance of flashlamp thereof |
| CN101695208B (en) * | 2009-06-08 | 2013-10-16 | 宁波金辉摄影器材有限公司 | Power-adjustable photoflood lamp device |
| US8547457B2 (en) * | 2009-06-22 | 2013-10-01 | Empire Technology Development Llc | Camera flash mitigation |
| CN103376620B (en) * | 2012-04-20 | 2016-08-03 | 华晶科技股份有限公司 | Flash unit |
| CN103685964B (en) * | 2012-09-11 | 2017-02-08 | 联想(北京)有限公司 | Control method and device and electronic equipment |
| CN108184047B (en) * | 2013-10-15 | 2020-12-01 | Oppo广东移动通信有限公司 | Intelligent AE algorithm for flash photography of mobile phone |
| US9237275B2 (en) * | 2013-12-20 | 2016-01-12 | International Business Machines Corporation | Flash photography |
| CN105025214B (en) * | 2014-04-15 | 2018-09-11 | 摩托罗拉移动通信软件（武汉）有限公司 | A kind of method, apparatus of focusing, system and terminal |
| CN104580927B (en) * | 2015-01-14 | 2017-08-18 | 广东欧珀移动通信有限公司 | Method for adjusting flash and device |
| CN113188775B (en) * | 2021-07-02 | 2022-02-01 | 成都康拓兴业科技有限责任公司 | Aviation anticollision lamp flash frequency tester |
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| CN1438536A (en) * | 2002-02-15 | 2003-08-27 | 株式会社尼康 | Auxiliary light-emitting control device and auxiliary flashing device |
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| CN1624566A (en) | 2005-06-08 |
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