CN101162348A - Digital cameras with automatically retracting lens and automatically retracting method thereof - Google Patents
Digital cameras with automatically retracting lens and automatically retracting method thereof Download PDFInfo
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- CN101162348A CN101162348A CNA2006101499027A CN200610149902A CN101162348A CN 101162348 A CN101162348 A CN 101162348A CN A2006101499027 A CNA2006101499027 A CN A2006101499027A CN 200610149902 A CN200610149902 A CN 200610149902A CN 101162348 A CN101162348 A CN 101162348A
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Abstract
The invention relates to a digital camera capable of automatically retracting lens and a method of automatically retracting the lens, comprising the following steps: a lens unit is extended out a lens when a switch unit is turned on; a control unit demands a sensing unit pick up a first image and convert the first image into a first image characteristic value for temporary storage; a timing unit starts timing and sends a detecting signal to the control unit when a preset interval is reached; the control unit demands the sensing unit pick up a second image and convert the second image into a second image characteristic value; the second image characteristic value and the first image characteristic value are compared to confirm whether preset difference is achieved, and if the preset difference achieved, the lens unit is enabled to retract the lens and the switch unit is turned off. The invention can solve the problem that the lens of the prior digital camera can not be well protected after the camera is turned on and the lens extends out, thereby having the function of reducing lens damages caused by the falling off or shaking of the camera.
Description
Technical field
The present invention relates to a kind of digital camera and camera lens automatic drawing back method thereof, particularly relate to a kind of front and back image feature value contrast that utilizes, decide camera lens whether to need the digital camera and the camera lens automatic recovery method thereof of automatic drawing back.
Background technology
Agitation along with fashion, the digital camera of nearly all amateur type is more and more compact in the volume development at present, appearance design is also more and more exquisite beautiful, it is same near high-quality digital picture that the common characteristic of these digital cameras can allow the user shoot with shirtsleeve operation exactly, and therefore these digital cameras of person are also arranged is idiot camera.
In order to simplify the operation, the camera lens that the digital camera of nearly all this type of amateur type all can be arranged in pairs or groups and can stretch out automatically/regain, just can stretch out camera lens automatically when user's push switch is opened digital camera fortunately allows the user take pictures immediately, the user only needs once more the push switch just can be with the camera lens automatic drawing back, simultaneously with the digital camera power-off when digital camera is finished using.Yet under the digital camera opening; camera lens is understood the normality maintenance usually and is stretched out the digital camera fuselage and present the state that exposes; though can and close digital camera with the camera lens automatic drawing back when some digital camera can provide so-called automatic stand-by function not take pictures in the user starts shooting back a period of time with convenience; but but do not reach automatic stand-by before the time after digital camera is opened, the camera lens that exposes to digital camera still is under the height risk that suffers damage easily.
It is improper to the gripping of digital camera that this height risk comes from the user, and make digital camera produce the situation that drops or rock, these situations all will make the camera lens of digital camera because bump or rub ground or other hard article, damage and can't use or the photographic images quality is affected and cause.In fact, the camera lens of digital camera is like the eyes that are the people, if there is any damage almost will make whole digital camera near the state that can't use, so camera lens often also is a part the most expensive in the digital camera.
Therefore; to how after the digital camera start, can keep protection at any time to camera lens; reduce digital camera after start because drop because of carelessness or improper rocking and cause damage to camera lens, should be that present digital camera intelligent mechanism development the next item up is badly in need of the important topic of making great efforts to overcome.
Summary of the invention
In view of above problem, but fundamental purpose of the present invention is to provide a kind of method of digital camera and automatic drawing back thereof of camera lens automatic drawing back.Can be after camera lens be stretched out in digital camera start, keep monitoring that the digital camera external environment is changed at any time, with when judging that digital camera lens is being under the high situation of damaging risk, can the automatic drawing back camera lens.
For reaching above-mentioned purpose, but the method for a kind of digital camera camera lens automatic drawing back disclosed in this invention comprises the following steps:
(a) when the switch element conducting, make lens unit stretch out camera lens;
(b) control module requires sensing unit to capture first image, and it is temporary to be converted to first image feature value;
(c) timing unit starts timing, and when reaching predetermined space, timing unit sends detection signal to control module;
(d) control module requires sensing unit to capture second image, and is converted to second image feature value; And
(e) contrast confirms whether described second image feature value and described first image feature value reach the predetermined difference amount, if reach, makes lens unit withdrawal camera lens and described switch element is turn-offed.
When contrast confirms that second image feature value and first image feature value do not reach the predetermined difference amount in the described step (e), also comprise execution the following step:
(f1) temporary second image feature value becomes first image feature value to replace former first image feature value; And
(f2) timing unit reclocking, and come back to step (c) execution.
Described first image feature value and described second image feature value are at least one of them of distribution characteristics of object in the distribution characteristics of distribution characteristics, brightness of image of color of image or the image.
Described first image feature value and second image feature value are at least one of them of sharpness feature of the sharpness feature of general image or image object.
Described predetermined difference amount is described second image feature value with respect to the distributional difference amount of object in the distributional difference amount of the distributional difference amount of color of image in described first image feature value, brightness of image or the image.
Described predetermined difference amount is second image feature value with respect to the sharpness difference amount of object in the sharpness difference amount of general image in first image feature value or the image.
But the invention also discloses a kind of digital camera of camera lens automatic drawing back, comprise at least:
One lens unit, stretching out/regaining in order to controls lens;
One sensing unit couples with lens unit, in order to the image in the acquisition lens unit;
One switch element couples with lens unit, can send signal when conducting and make lens unit stretch out camera lens;
One timing unit sends detection signal in order to timing and when reaching predetermined space; And
One control module, be coupled to aforementioned each unit, send the semaphore request sensing unit when being used to the switch element conducting and capture first image, and it is temporary to be converted to first image feature value, send the semaphore request timing unit after temporary and start timing, and when receiving detection signal, require sensing unit to capture second image, and be converted to second image feature value, when contrast confirms that second image feature value and first image feature value reach the predetermined difference amount, send signal to switch element requirement send signal and make lens unit regain camera lens and make the switch element shutoff.
Described digital camera also comprises a storage element that is coupled to described control module, is static memory or flash memory, in order to store in the described control module first image and second image from described sensing unit.
Described digital camera also comprises a power supply unit that is coupled to described switch element, when described switch element conducting, power to digital camera in each unit operate.
Described digital camera also comprises a voice unit that is coupled to described control module, and described voice unit is a loudspeaker, in order to the signal controlling that receives described control module to send voice messaging.
Described control module also comprises a buffer, in order to temporary first image feature value for contrast.
When described digital camera, contrast confirm that second image feature value and first image feature value do not reach the predetermined difference amount, become first image feature value to replace former first image feature value by temporary second image feature value of described control module.
Described digital camera comprises that also sending signal by described control module makes the timing unit reclocking.
Described digital camera, first image feature value and second image feature value are at least one of them of distribution characteristics of object in the distribution characteristics of distribution characteristics, brightness of image of color of image or the image.
Described digital camera, first image feature value and second image feature value are at least one of them of sharpness feature of the sharpness feature of general image or image object.
Described predetermined difference amount is second image feature value with respect to the distributional difference amount of object in the distributional difference amount of the distributional difference amount of color of image in first image feature value, brightness of image or the image.
Described predetermined difference amount is second image feature value with respect to the sharpness difference amount of object in the sharpness difference amount of general image in first image feature value or the image.
The present invention can solve digital camera can't be improved protection after camera lens is stretched out in start problem really, can reach to reduce because digital camera drops or rocks and the effect that causes camera lens to damage.
Description of drawings
But Fig. 1 is the running block schematic diagram of the digital camera of camera lens automatic drawing back of the present invention;
But Fig. 2 is the operation workflow figure of the method for digital camera camera lens automatic drawing back of the present invention.
Wherein, Reference numeral:
50 images, 100 digital cameras
110 switch elements, 120 power supply units
130 timing units, 140 lens units
150 control modules, 160 sensing units
170 storage elements, 180 voice units
Embodiment
But the present invention proposes a kind of digital camera of camera lens automatic drawing back, as shown in Figure 1, comprises following component units at least in the main body of digital camera 100:
Switch element 110 couples with lens unit 140, can send signal and make lens unit 140 stretch out camera lens when conducting; And can before turn-offing, send signal and make lens unit 140 regain camera lenses.Therefore, switch element 110 is responsible for lens unit 140 being controlled by signal according on off state.Conducting/the shutoff of switch element 100, can when being subjected to pushing for the first time, form conducting state by mechanical switch, and when being subjected to pushing once more, form off state, switch element 100 also can trigger by the electronic signal in the digital camera 100, carries out the conducting/shutoff control to switch element 100.In the present invention, switch element 100 is to trigger by pushing of mechanical switch to produce conducting, and the electronic signal that the part of turn-offing is then sent by digital camera 100 internal control unit 150 triggers controls shutoff.
Timing unit 130 starts timing in order to the signal controlling that receives control module 150, when reaching predetermined space, sends detection signal and gives control module 150.Timing unit 130 described here is timers, can set a time interval therein, for example: uniformly-spaced can send detection signal when reaching the time interval of this setting in 1/2 second, 1 second.
(1) when switch element 110 conductings (digital camera 100 start power supply backs) send semaphore request sensing unit 160 by lens unit 140 acquisitions first image, and it are temporary to be converted to first image feature value.First image feature value mainly is temporarily stored in the buffer (not shown) in the control module 150, prepare to wait for when capturing second image and obtaining second image feature value, can be used as the contrast basic basis and be read out, carry out the difference contrast with second image feature value.
(2) when the detection signal that receives from timing unit 130, require sensing unit 160 acquisitions second image, and be converted to second image feature value, carry out the contrast of first image feature value and second image feature value then, when contrast confirms that second image feature value and first image feature value difference between the two reach the predetermined difference amount, then send signal and make lens unit 140 withdrawal camera lenses and switch element 110 is turn-offed to switch element 110.
When (3) finding that after control module 150 carries out the contrast of first image feature value and second image feature value both comparing results do not reach the predetermined difference amount, control module 150 can be kept in second image feature value to buffer and be replaced to fall original first temporary image feature value, and become the first new image feature value, as contrasting basic basis next time.
When (4) finding that after control module 150 carries out the contrast of first image feature value and second image feature value both comparing results do not reach the predetermined difference amount, control module 150 also can send 130 reclockings of semaphore request timing unit simultaneously except the control of carrying out (3).
Aforesaid switch element 110, other is coupled to power supply unit 120, can send signal when conducting requires power supply unit 120 power supplies to each unit in the digital camera 100 for power supply unit 120, each unit is operated, and the part of relevant power supply unit 120 power supplies belongs to prior art therefore diagram is more and is illustrated in this and do not give unnecessary details.
Drop or rock excessive and regain camera lens because run in order to allow the user can know digital camera 100, the present invention can further be coupled to voice unit 180 on the control module 150, so that when control module 150 sends signal and requires switch element 110 to make lens unit 140 regain camera lenses for switch element 110, can send signal simultaneously and require to play predefined voice messaging for voice unit 180, to reach the effect of informing the user.This voice unit 180 can take loudspeaker to realize usually.
The How It Works that the present invention is detailed, but be the method for digital camera 100 camera lens automatic drawing backs, to be described in detail by Fig. 2: at first, the user makes switch element 110 present conducting state by push switch unit 110, therefore switch element 110 will send semaphore request power supply unit 120 and start each unit that begins to power in the digital camera 100, make each cell operation and make digital camera 100 by shutdown (Turn Off) state then become start (Turn On) state, 110 the time, make lens unit 140 stretch out camera lens (step 210) in the actuating switch unit by signal controlling.After camera lens stretches out, control module 150 initiatively sends semaphore request sensing unit 160 by lens unit 140 acquisitions first image, control module 150 also is converted into first image feature value and is temporary in the buffer of control module 150 (step 220) after receiving first image, with as follow-up contrast basic basis.Timing unit 130 is finished the signal controlling startup timing that the temporary back of first image feature value is received control module 150 in control module 150, when reaching predetermined space (as: 1/2 second, this predetermined space can be set by the software in other digital camera 100), timing unit 130 can send detection signal to control module 150 (step 230).When receiving detection signal, just sends control module 150 semaphore request sensing unit 160 acquisitions second image, and by being converted into second image feature value (step 240) after control module 150 receptions.Then, control module 150 just can contrast the otherness of confirming between second image feature value and first image feature value in real time and whether reach predetermined difference amount (step 250), and this predetermined difference amount can be carried out the setting of numerical value according to different image feature value contrast projects by other software that is provided in the digital camera 100.When reaching the predetermined difference amount, just sending signal requires switch element 110 to send signal for switch element 110 to give lens unit 140 to regain camera lens, and switch element 110 automatically shuts down (step 260) after regaining camera lens, makes digital camera 100 by start (Turn On) state then become shutdown (Turn Off) state.
Before shutdown, control module 150 also can send signal to sending signal in the switch element 110 to voice unit 180, make voice unit send the predetermined voice (not shown),, regained and present off-mode so that inform user's digital camera 100 camera lenses as " serge " sound.
The image that aforementioned relevant sensing unit 160 is captured, as: the action whether first image or second image can will store in addition according to user's requirements set, store if set, then can when control module 150 is obtained image, directly dump to as: on the storage element 170 of static memory (SRAM) or flash memory (FLASH Memory), usually can provide the user to carry out storage by mode built-in or the extrapolation memory card on the digital camera 100 to image.
About comparing the part of second image feature value and first image feature value in the step 250; the intensity of variation that image feature value was produced in predetermined space before and after it mainly utilized; judge whether digital camera 100 may suffer from and drop or rock excessive situation, reach len and reduce the purpose effect of damaging so that camera lens regained.On contrast difference's feature, roughly can divide into: (1) image distribution difference; And (2) image definition difference two generous differences of always judging the front and back image feature value, be described as follows:
(1) image distribution difference.Whether image changed before and after position that image feature value distributed before and after main utilization the and situation were judged, these image feature values can be the distribution of color of image, the distribution of brightness of image, the distribution of image object etc., the contrast project of corresponding different images eigenwert can be by known or following may the generation at present, belongs to technology that those skilled in the art can know or understand and is applied to the present invention image feature value is captured conversion.The example that is distributed as with image object: suppose the main image object (as: people) in the image, in predetermined interval, be converted to and be distributed in (even not appearing in second image feature value) above second image feature value by originally being distributed in the first image feature value central authorities, so that the distributional difference amount of image object reaches the predetermined difference amount between second image feature value and first image feature value, analyze possible number camera 100 this moment and drop or rock excessive situation, therefore needs be regained camera lens automatically.
(2) image definition difference.Whether image changed before and after the sharpness of image feature value was judged before and after main the utilization, the object of judgement sharpness can be judged with the sharpness of individual objects in general image or the image, the acquisition conversion of same relevant image resolution ratio also can be by known or following may the generation at present, belongs to technology that those skilled in the art can know or understand and is applied to the present invention image feature value is handled.Sharpness with individual objects in the image is an example: suppose the main image object (as: people) in the image, in predetermined interval by original sharpness 98% in first image feature value, the sharpness that changes in second image feature value only is left 4%, so that the sharpness difference amount between second image feature value and first image feature value reaches the predetermined difference amount, analyze possible number camera 100 this moment and drop or rock excessive situation, therefore needs be regained camera lens automatically.
And described predetermined difference amount promptly is described second image feature value with respect to the distributional difference amount of object in the distributional difference amount of the distributional difference amount of color of image in described first image feature value, brightness of image or the image.The predetermined difference amount can also be second image feature value with respect to the sharpness difference amount of object in the sharpness difference amount of general image in first image feature value or the image.
Described image feature value difference is judged even so, but the present invention is limited, in fact in order to reach more accurate judgement, can judge that this can do suitable improvement based on technological concept of the present invention by the technician who is familiar with the characteristics of image contrast simultaneously in conjunction with the difference contrast project more than.
Then go on to say the main operation workflow of the inventive method, if when step 250, judge when confirming that second image feature value and first image feature value do not reach the predetermined difference amount, expression digital camera 100 this moment is not under the risk that may cause the camera lens damage immediately, but this moment is because the residing external environment condition of digital camera 100 camera lenses changes, therefore must carry out program to the renewal of first image feature value, as described in step 270 among Fig. 2, temporary second image feature value of control module 150 meetings this moment become first image feature value to replace former first image feature value to buffer, as follow-up contrast basic basis.Certainly, because last time contrast was finished, will restart new contrast program, therefore control module 150 sends 130 reclockings of semaphore request timing unit simultaneously, and control whole flow process and come back to step 230 place, all the other processes are not given unnecessary details at this as previously mentioned.
By aforementioned description to digital camera, the present invention can solve digital camera can't be improved protection after camera lens is stretched out in start problem really, can reduce because digital camera drops or rocks and the camera lens that causes damages.
Though the present invention with aforesaid embodiment openly as above; but be not in order to limit the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; when can doing a little change and modification, therefore scope of patent protection of the present invention must be looked this instructions appending claims person of defining and is as the criterion.
Claims (17)
1. but the method for a digital camera camera lens automatic drawing back is characterized in that, comprises the following step at least:
(a) when the switch element conducting, make lens unit stretch out camera lens;
(b) control module requires sensing unit to capture first image, and it is temporary to be converted to first image feature value;
(c) timing unit starts timing, and when reaching predetermined space, timing unit sends detection signal to control module;
(d) control module requires sensing unit to capture second image, and is converted to second image feature value; And
(e) contrast confirms whether described second image feature value and described first image feature value reach the predetermined difference amount, if reach, makes lens unit withdrawal camera lens and described switch element is turn-offed.
2. but the method for digital camera camera lens automatic drawing back according to claim 1 is characterized in that, when contrast confirms that second image feature value and first image feature value do not reach the predetermined difference amount in the step (e), also comprises execution the following step:
(f1) temporary second image feature value becomes first image feature value to replace former first image feature value; And
(f2) timing unit reclocking, and come back to step (c) execution.
3. but the method for digital camera camera lens automatic drawing back according to claim 1, it is characterized in that described first image feature value and described the two or two image feature value are at least one of them of distribution characteristics of object in the distribution characteristics of distribution characteristics, brightness of image of color of image or the image.
4. but the method for digital camera camera lens automatic drawing back according to claim 1 is characterized in that, first image feature value and second image feature value are at least one of them of sharpness feature of the sharpness feature of general image or image object.
5. but the method for digital camera camera lens automatic drawing back according to claim 1, it is characterized in that described predetermined difference amount is described second image feature value with respect to the distributional difference amount of object in the distributional difference amount of the distributional difference amount of color of image in described first image feature value, brightness of image or the image.
6. but the method for digital camera camera lens automatic drawing back according to claim 1 is characterized in that, described predetermined difference amount is second image feature value with respect to the sharpness difference amount of object in the sharpness difference amount of general image in first image feature value or the image.
7. but the digital camera of a camera lens automatic drawing back is characterized in that, comprises at least:
One lens unit, stretching out/regaining in order to controls lens;
One sensing unit couples with lens unit, in order to the image in the acquisition lens unit;
One switch element couples with lens unit, can send signal when conducting and make lens unit stretch out camera lens;
One timing unit sends detection signal in order to timing and when reaching predetermined space; And
One control module, be coupled to aforementioned each unit, send the semaphore request sensing unit when being used to the switch element conducting and capture first image, and it is temporary to be converted to first image feature value, send the semaphore request timing unit after temporary and start timing, and when receiving detection signal, require sensing unit to capture second image, and be converted to second image feature value, when contrast confirms that second image feature value and first image feature value reach the predetermined difference amount, send signal to switch element requirement send signal and make lens unit regain camera lens and make the switch element shutoff.
8. but the digital camera of camera lens automatic drawing back as claimed in claim 7, it is characterized in that, also comprise a storage element that is coupled to described control module, be static memory or flash memory, in order to store in the described control module first image and second image from described sensing unit.
9. but the digital camera of camera lens automatic drawing back as claimed in claim 7 is characterized in that, also comprises a power supply unit that is coupled to described switch element, when described switch element conducting, power to digital camera in each unit operate.
10. but the digital camera of camera lens automatic drawing back as claimed in claim 7, it is characterized in that, also comprise a voice unit that is coupled to described control module, described voice unit is a loudspeaker, in order to the signal controlling that receives described control module to send voice messaging.
11. but the digital camera of camera lens automatic drawing back as claimed in claim 7 is characterized in that described control module also comprises a buffer, in order to temporary first image feature value for contrast.
12. but the digital camera of camera lens automatic drawing back as claimed in claim 7, it is characterized in that, when contrast confirms that second image feature value and first image feature value do not reach the predetermined difference amount, become first image feature value to replace former first image feature value by temporary second image feature value of described control module.
But 13. the digital camera of camera lens automatic drawing back as claimed in claim 12 it is characterized in that, comprise that also sending signal by described control module makes the timing unit reclocking.
14. but the digital camera of camera lens automatic drawing back as claimed in claim 7, it is characterized in that first image feature value and second image feature value are at least one of them of distribution characteristics of object in the distribution characteristics of distribution characteristics, brightness of image of color of image or the image.
15. but the digital camera of camera lens automatic drawing back as claimed in claim 7 is characterized in that first image feature value and second image feature value are at least one of them of sharpness feature of the sharpness feature of general image or image object.
16. but the digital camera of camera lens automatic drawing back as claimed in claim 7, it is characterized in that described predetermined difference amount is second image feature value with respect to the distributional difference amount of object in the distributional difference amount of the distributional difference amount of color of image in first image feature value, brightness of image or the image.
17. but the digital camera of camera lens automatic drawing back as claimed in claim 7 is characterized in that described predetermined difference amount is second image feature value with respect to the sharpness difference amount of object in the sharpness difference amount of general image in first image feature value or the image.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101499027A CN100561324C (en) | 2006-10-12 | 2006-10-12 | But the digital camera of camera lens automatic drawing back and the method for automatic drawing back thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101499027A CN100561324C (en) | 2006-10-12 | 2006-10-12 | But the digital camera of camera lens automatic drawing back and the method for automatic drawing back thereof |
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| CN101162348A true CN101162348A (en) | 2008-04-16 |
| CN100561324C CN100561324C (en) | 2009-11-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102346535A (en) * | 2010-07-30 | 2012-02-08 | 鸿富锦精密工业（深圳）有限公司 | Electronic device with power-saving function and power-saving method thereof |
| CN103379259A (en) * | 2012-04-25 | 2013-10-30 | 华晶科技股份有限公司 | Shooting device and dustproof method thereof |
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| CN102346535A (en) * | 2010-07-30 | 2012-02-08 | 鸿富锦精密工业（深圳）有限公司 | Electronic device with power-saving function and power-saving method thereof |
| CN103379259A (en) * | 2012-04-25 | 2013-10-30 | 华晶科技股份有限公司 | Shooting device and dustproof method thereof |
| CN104965525A (en) * | 2015-06-23 | 2015-10-07 | 广东欧珀移动通信有限公司 | Electric rotating body protection method and device |
| CN106131265A (en) * | 2016-06-17 | 2016-11-16 | 武汉华星光电技术有限公司 | Prevent the method and device of stretchable screen screen scraping |
| CN109862227A (en) * | 2017-11-30 | 2019-06-07 | 广东欧珀移动通信有限公司 | A kind of control method of camera, electronic equipment and readable storage medium storing program for executing |
| CN109922249A (en) * | 2017-12-12 | 2019-06-21 | 北京小米移动软件有限公司 | Image acquisition units control method and device |
| CN109963055A (en) * | 2017-12-25 | 2019-07-02 | 宏碁股份有限公司 | Electronic device and its operating method |
| CN108924282A (en) * | 2018-06-08 | 2018-11-30 | Oppo广东移动通信有限公司 | Electronic device and fall protection control method |
| CN108924299A (en) * | 2018-07-02 | 2018-11-30 | 广州三星通信技术研究有限公司 | Electronic equipment |
| CN108924299B (en) * | 2018-07-02 | 2020-10-30 | 广州三星通信技术研究有限公司 | Electronic device |
| CN111083346A (en) * | 2018-10-19 | 2020-04-28 | 珠海格力电器股份有限公司 | Camera control method and device and terminal |
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| CN100561324C (en) | 2009-11-18 |
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