CN1658060A - Controlling method and device for flash lamp of camera - Google Patents
Controlling method and device for flash lamp of camera Download PDFInfo
- Publication number
- CN1658060A CN1658060A CN2005100077428A CN200510007742A CN1658060A CN 1658060 A CN1658060 A CN 1658060A CN 2005100077428 A CN2005100077428 A CN 2005100077428A CN 200510007742 A CN200510007742 A CN 200510007742A CN 1658060 A CN1658060 A CN 1658060A
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- CN
- China
- Prior art keywords
- flashlamp
- flash lamp
- shutter
- luminous
- camera
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
- G03B15/0452—Electrical ignition means connected to the shutter
-
- 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
- G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
- G03B15/0405—Non-electronic flash apparatus incorporated in photographic apparatus
-
- 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
- G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
- G03B15/0442—Constructional details of the flash apparatus; Arrangement of lamps, reflectors, or the like
- G03B15/0447—Energy sources; Batteries; Capacitors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stroboscope Apparatuses (AREA)
- Studio Devices (AREA)
- Exposure Control For Cameras (AREA)
- Telephone Function (AREA)
Abstract
The invention relates to a control device for camera flash lamp and method thereof. The invention includes following structural members: voltage boosting portion which derives output power of the battery to drive the flash lamp; Control unit for controlling the flash lamp to illuminate for a certain period of time in low-light level thereby confirming whether user is pressing optical shutter, meanwhile, as well as lightening the flash lamp in a period of time before the optical shutter is pressed. The method includes following steps: Confirming whether using the flash lamp; After that the flash lamp is confirmed to be used, lightening the flash lamp in a relative low-light level, and measuring time length before the optical shutter is pressed down; If the time delayed before the optical shutter is pressed down is relative longer, implementing the step of boosting driving voltage for the flash lamp; when the shutter-pressing operation is identified, lightening the flash lamp in the flash lamp driving voltage determined by the said step.
Description
Technical field
The present invention relates to a kind of camera technique, more specifically, relate to a kind of camera flash lamp control device and method (CONTROLLING APPARATUS AND METHOD FOR CAMERAFLASH) of camera integrated-type mobile communication terminal.
Background technology
At present, in being in the mobile communication terminal of development phase (below abbreviate " mobile phone " as), the camera mobile phone type that has camera function demonstrates ever-increasing trend.
Particularly, in the multimedia type mobile phone of releasing recently, high resolving power camera and LED flashlamp (high brightness White LED) are installed mostly.
Be installed in the flash modules on the mobile phone, can be divided into externally positioned type and internally-arranged type according to the installation site, the general module of flashlamp has possessed 3-4 low-light level white light-emitting diode (white LED) in parallel, when photography, utilize the booster power of DC-DC charge pump (charge pump) IC, open LED.
Therefore, utilize mobile phone that camera is installed (below abbreviate " camera mobile phone " as) in the dark also can carry out the shooting of arbitrary objects.But, when in the dark utilizing flashlamp to take under the environment,, utilize fixing power drives flashlamp because existing camera mobile phone is not subjected to the influence of surrounding brightness always, increase unnecessary current drain, thereby may cause to receive the problem of session services.
And, because the flashlamp that is installed on the existing camera mobile phone has adopted low-light level LED, when under the dark surrounds of almost being beyond recognition contour of object, taking,, cause the problem that can't get a distinct image easily because of the illuminance of flashlamp is abundant inadequately.
Moreover, because existing camera mobile phone only could start flashlamp pressing under the state of shutter, therefore, when surrounding environment is crossed secretly and can't recognition object the time, the user can only regulate the focal length of subject with consciousness, can't the shooting clear picture or problem such as composition is wrong thereby cause easily.
Summary of the invention
Therefore, in order to solve the problem of above existence, the technical problem to be solved in the present invention is: device for controlling flashlight and method that a kind of camera integrated mobile communication terminal is provided, make it in camera integrated mobile communication terminal, to be provided with after the drive pattern of flashlamp, adjust the illuminance of flashlamp according to the brightness of periphery, make flashlamp produce light with optimum condition, thus image that not only can shooting clear, but also can reduce unnecessary power consumption.
In addition, the technical problem to be solved in the present invention also is, after having started flashlamp, make it within the regular hour section, to move very light, thereby even if run into the situation that is difficult to discern object in the dark surrounds, also accurately composition and focusing.
For this reason, camera flash driving lamp of the present invention comprises following structural member: boosting section drives flashlamp by drawing (Pumping) working power; Control module, by controlling described boosting section, finish following operating process, that is to say, when the operation flashlamp, flashlamp is driven with low illuminance, and confirm whether the user will press shutter, simultaneously along with the increase of this time period before pressing shutter, increase the grade of boosting of the output voltage of described boosting section, and after having confirmed the pressing of shutter, drive flashlamp.
Simultaneously, camera flash driving lamp of the present invention comprises following structural member: boosting section by drawing working power, is described flashlamp drive division power supply; The brightness test section after recognizing the flashlamp operation, detects surrounding enviroment brightness; Control module, implement control by described flashlamp drive division being finished following operation, that is to say, when the operation flashlamp, consider the detected surrounding enviroment brightness of described brightness test section, change the output voltage of described boosting section, and drive flashlamp with low illuminance, after having confirmed the situation of pressing of shutter release button, utilize above determined booster tension to drive flashlamp.
Wherein, described luminance detection portion is made of the optical sensor of adjusting resistance value according to the irradiation light quantity.
Wherein, described flashlamp has adopted the high brightness LED (LED) that links with the camera operation.
On the other hand, whether the affirmation that comprises the steps: of camera flash lamp driving method of the present invention moves flashlamp; After confirming the flashlamp operation, make flashlamp luminous, and measure and press the time of being experienced before the shutter with low illuminance; Along with the increase of pressing the time of being experienced before the shutter, increase the step of the grade of boosting of flashlamp driving voltage.
Wherein, camera flash lamp driving method of the present invention comprises the steps: to confirm whether to move flashlamp; After confirming the flashlamp operation, the brightness of detecting surrounding enviroment; Determine the flashlamp driving voltage according to the above brightness that detects, make flashlamp luminous with low illuminance; Detecting after shutter presses,, make flashlamp luminous by above definite flashlamp driving voltage.
As mentioned above, advantage of the present invention and technique effect: when needs utilize the taking photos by using flashlights photo, can make flashlamp send the light of low illuminance in advance, with the identification object, and then carry out best brightness of flash lamp adjustment, even if make the user in dark part that can't recognition object, also can finish focusing and composition exactly, and carry out filming image.
And, in the present invention, owing to can adjust the illuminance of flashlamp according to ambient brightness, thus saved unnecessary current drain, compare with the general camera mobile phone, can reach the prolongation battery effect of service time.
Description of drawings
Fig. 1 is the camera flash lamp control device calcspar according to the embodiment of the invention;
Fig. 2 is the block diagram of camera flash lamp control device in accordance with another embodiment of the present invention;
Fig. 3 is the flashlamp control procedure workflow diagram according to the embodiment of the invention;
Fig. 4 be corresponding with Fig. 2, shown the oscillogram with the corresponding optical sensor change in voltage of surrounding enviroment brightness;
Fig. 5 be corresponding with Fig. 2, shown the oscillogram with the corresponding flashlamp drive current variations of surrounding enviroment brightness.
Main identification division explanation in the accompanying drawing:
110, boosting section 120,220, flashlamp 130, battery
140,210, control module 150, key input part 230, luminance detection portion
Embodiment
Below, in conjunction with accompanying drawing provided by the invention, carry out following detailed description.
In embodiments of the present invention, suppose to adopt camera integrated mobile communication terminal (below abbreviate " camera mobile phone " as), and be precondition, describe with internally-arranged type or externally positioned type flashlamp.
Fig. 1 is the camera flash lamp control device calcspar according to the embodiment of the invention, shows that as this accompanying drawing the camera flash lamp control device has comprised following architectural feature: boosting section 110 by drawing battery 130 as working power, drives flashlamp 120; Control module 140, finish following operating process by controlling described boosting section 110, that is to say, when being judged as Flash Mode, by controlling described boosting section 110, make described flashlamp 120 with the low luminous certain hour of illuminance, confirm whether the user is pressing shutter,, increase the output voltage of described boosting section 110 interimly simultaneously along with the increase of this time before pressing shutter, and after having pressed shutter release button, make flashlamp 120 glittering by key input part 150.
Described control module 140 can be by installing hardware or software is realized being built on the MSM of camera mobile phone (Mobile StationModem) chip.
Workflow diagram shown in 3 in conjunction with the accompanying drawings, the enforcement and the action effect of the embodiment of the invention of structure carry out following explanation to having as above.
In the ordinary course of things, keep the closed condition of camera mobile phone flashlamp function by control module 140, after having started camera function, whether the lighting function that waits flashlamp 120 is activated.
After this, the user is after having started flashlamp, and control module 140 will wait the shutter of key input part 150 and press operation, receive the boosting section 110 of power supply supply simultaneously from battery 130 by control, make flashlamp 120 the certain hour section (for example, 0.5s) within, luminous with low illuminance.
At this moment, even if the situation of recognition object occurs being difficult to, the user also can be by flashlamp 120 to hang down the light that illuminance is sent, and the easy adjustment focus is finished composition.
After this, by the voltage of control module 140 definite flashlamp 120 luminous required liftings,, and when the shutter of acknowledgement key input part 150 is pressed operation, measure the time of being experienced with control boosting section 110.
At this moment, confirm by control module 140 whether the shutter time interval of being measured before of pressing (has for example reached certain period of time, 1.5s), when if measured value is no more than special time period, the certain minute of then every increase promotes all interimly and drives the luminous required voltage grade of flashlamp 120.
After minute has reached the regular hour, determine that by control module 140 voltage promotes grade, makes the glittering illuminance of flashlamp 120 reach maximal value.
According to these steps, control module 140 will wait shutter and press operation, and make boosting section 110 carry out boost operations for satisfying the determined grade of boosting, and when shutter operation occurring, described control module 140 will make flashlamp 120 luminous by the described boosting section 110 of control.
Therefore, even if the user not only can also can regulate focus and finish composition in the difficult place that object is discerned, and, can adjust flashlamp 120 flash luminances, thereby can obtain photographs clearly waiting within the time period that shutter presses.
In another embodiment, device for controlling flashlight has the structure of block diagram as accompanying drawing 2.Wherein, comprised following structural member: flashlamp 220; Luminance detection portion 230 receives working power from LCDs (LCD) (not shown), the brightness of detecting surrounding enviroment; Control module 210, after the system of being judged is in the flashlamp operational mode, determine that the surrounding enviroment brightness of being detected with luminance detection portion 230 is corresponding luminous following, the booster tension that described flashlamp 220 is required, then, within the regular hour section, make described flashlamp 220 luminous with low illuminance, and the voltage at its two ends promoted be determined magnitude of voltage, improve the output voltage of battery (not shown), when having confirmed the pressing after the operation of shutter, utilize boosted voltage, make flashlamp luminous.
Described luminance detection portion 230 is equipped with the optical sensor that can change resistance value according to the irradiation light quantity.
That is to say, in another embodiment of the present invention, control module 210 has possessed the function etc. that boost function, flashlamp drive function and read brightness, and identical with first embodiment, also can be by hardware being installed or software is realized being built on the MSM of camera mobile phone (the Mobile Station Modem) chip.
The oscillogram that shows in 4 and 5 in conjunction with the accompanying drawings, the enforcement and the action effect of another embodiment of the present invention of structure carry out following explanation to having as above.
In the ordinary course of things, keep the closed condition of camera mobile phone flashlamp function by control module 210, after having started camera function, whether the lighting function that waits flashlamp 220 is activated.
After this, after the user has started flashlamp (Flash_en), control module 210 will receive the luminance signal of surrounding enviroment from luminance detection portion 230, and with reference to this luminance signal, determine the driving voltage of flashlamp 220.
At this moment because luminance detection portion 230 has possessed the optical sensor by the operation of LCDs (LCD) driving voltage, therefore, after camera function starts, just begin surrounding enviroment brightness detect right.Described optical sensor has then possessed as the oscillogram characteristic that shows among Fig. 4, and therefore, periphery is dark more, and internal resistance value is just big more, and periphery is bright more, and internal resistance value is just more little, thereby will send control module 210 corresponding to the voltage of this resistance value to.
Thereby control module 210 is with reference to peripheral luminance signal and determine flashlamp 220 driving voltages.
Afterwards, within the certain hour section, hang down the illuminance illumination, cross dark and situation can't recognition object also can make the user finish neatly and focus and the composition operation even if surrounding environment occurs by control module 210 control flashlamp 220.In this case, the condition that makes flashlamp 220 send low illuminance light is exactly: have only the brightness of the surrounding enviroment that affirmation detects by luminance detection portion 230 to be lower than under the situation of brightness of prior setting, and could be with the illumination of low illuminance certain time section.
At this moment, when control module 210 throws light on flashlamp 220 low illuminances,, carry out boost operations, make voltage satisfy determined flashlamp driving voltage with reference to surrounding enviroment brightness.At this moment, shown in oscillogram among Fig. 5, by the control of control module 210, surrounding enviroment are bright more, and the electric current that provides for flashlamp 220 is more little, and surrounding enviroment are dark more, and the electric current that provides for flashlamp 220 is big more.
Then, when the user has pressed shutter release button, control module 210 will be given flashlamp 220 according to the voltage that surrounding enviroment brightness is boosted, and make flashlamp 220 luminous, shoot photographs clearly.
Claims (7)
1, a kind of camera flash lamp control device, it is characterized in that: flash lamp driving device comprises following structural member: boosting section by drawing working power, drives flashlamp; Control module, by controlling described boosting section, finish following operating process, that is to say, when driving flashlamp work, at first make flashlamp luminous with low illuminance, and wait for whether the user will press shutter, the while is along with the increase of this time before pressing shutter, increase the grade of described booster tension, and after having confirmed the pressing of shutter, utilize the above booster tension of determining, make flashlamp luminous.
2, a kind of camera flash lamp control device according to claim 1, it is characterized in that: this flashlamp has adopted high brightness LED.
3, a kind of camera flash lamp control device, it is characterized in that: flash lamp driving device comprises following structural member: boosting section, for the luminous voltage of carrying out of flashlamp draws step; Luminance detection portion, after recognizing flashlamp work, the brightness of detecting surrounding enviroment; Control module, when the operation flashlamp, the surrounding enviroment brightness that is detected according to described luminance detection portion, to determine the voltage that draws of described boosting section, and to hang down the work of drawing of controlling above-mentioned boosting section when illuminance drives flashlamp, after having confirmed the situation of pressing of shutter release button, utilize the voltage that draws of above-mentioned lifting, make flashlamp luminous.
4, a kind of camera flash lamp control device according to claim 2, it is characterized in that: this flashlamp has adopted high brightness LED.
5, a kind of camera flash lamp control method is characterized in that: the flashlamp driving method comprises the steps: to confirm whether to move flashlamp; After confirming the flashlamp operation, make flashlamp luminous, and measure and press the time of being experienced before the shutter with low illuminance; Along with the increase of pressing the time of being experienced before the shutter, increase the step of the grade of boosting of flashlamp driving voltage; Press when operation when recognizing shutter,, make flashlamp luminous by above-mentioned definite flashlamp driving voltage.
6, a kind of camera flash lamp control method according to claim 5 is characterized in that: this method further comprises the steps: when surpass the time value of setting in advance the time delay that shutter is pressed the flashlamp driving voltage to be defined as maximal value.
7, a kind of camera flash lamp control method is characterized in that: the method for this driving flashlamp comprises the steps: after confirming the flashlamp operation, the brightness of detecting surrounding enviroment; Determine the flashlamp driving voltage according to the above-mentioned brightness that detects, flashlamp is driven with low illuminance; Detecting after shutter presses,, make flashlamp luminous by above definite flashlamp driving voltage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040010085A KR20050081722A (en) | 2004-02-16 | 2004-02-16 | Controlling apparatus and method for camera flash |
| KR1020040010085 | 2004-02-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1658060A true CN1658060A (en) | 2005-08-24 |
| CN100465766C CN100465766C (en) | 2009-03-04 |
Family
ID=35007631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100077428A Expired - Fee Related CN100465766C (en) | 2004-02-16 | 2005-02-16 | Controlling method and device for flash lamp of camera |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20050081722A (en) |
| CN (1) | CN100465766C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101911672A (en) * | 2008-01-18 | 2010-12-08 | 株式会社尼康 | Illumination device for imaging and camera |
| CN103856722A (en) * | 2014-02-07 | 2014-06-11 | 宇龙计算机通信科技(深圳)有限公司 | Photo taking method and system |
| CN103957363A (en) * | 2014-05-16 | 2014-07-30 | 深圳市中兴移动通信有限公司 | Flash camera shooting method and camera shooting device |
| CN110213422A (en) * | 2019-05-14 | 2019-09-06 | 惠州Tcl移动通信有限公司 | Mobile terminal flash lamp enables control method, mobile terminal and storage medium |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970006278B1 (en) * | 1993-04-14 | 1997-04-25 | 삼성항공산업 주식회사 | Automatic camera flash and control method of the same |
| JP2000350090A (en) * | 1999-06-07 | 2000-12-15 | Fuji Photo Optical Co Ltd | Camera |
| JP2003174587A (en) * | 2001-12-07 | 2003-06-20 | Seiko Precision Inc | Image pickup device and portable electronic appliance |
| JP4040358B2 (en) * | 2002-03-15 | 2008-01-30 | シャープ株式会社 | Mobile phone with shooting function |
| JP2004153571A (en) * | 2002-10-30 | 2004-05-27 | Nec Access Technica Ltd | Portable telephone with lighting, lighting control method therefor, and lighting control program |
| KR20050004608A (en) * | 2003-07-03 | 2005-01-12 | 삼성테크윈 주식회사 | Method for controlling digital camera wherein adaptive light-emitting is performed |
-
2004
- 2004-02-16 KR KR1020040010085A patent/KR20050081722A/en not_active Application Discontinuation
-
2005
- 2005-02-16 CN CNB2005100077428A patent/CN100465766C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101911672A (en) * | 2008-01-18 | 2010-12-08 | 株式会社尼康 | Illumination device for imaging and camera |
| CN103856722A (en) * | 2014-02-07 | 2014-06-11 | 宇龙计算机通信科技(深圳)有限公司 | Photo taking method and system |
| CN103856722B (en) * | 2014-02-07 | 2018-10-30 | 宇龙计算机通信科技(深圳)有限公司 | A kind of method and system taken pictures |
| CN103957363A (en) * | 2014-05-16 | 2014-07-30 | 深圳市中兴移动通信有限公司 | Flash camera shooting method and camera shooting device |
| CN110213422A (en) * | 2019-05-14 | 2019-09-06 | 惠州Tcl移动通信有限公司 | Mobile terminal flash lamp enables control method, mobile terminal and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100465766C (en) | 2009-03-04 |
| KR20050081722A (en) | 2005-08-19 |
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Owner name: LANGCHAO LEJIN DIGITAL MOBILE COMMUNICATION CO., L Free format text: FORMER OWNER: LG ELECTRONIC (CHINA) RESEARCH + DEVELOPMENT CENTRE CO., LTD. Effective date: 20120309 |
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Free format text: CORRECT: ADDRESS; FROM: 100102 CHAOYANG, BEIJING TO: 264006 YANTAI, SHANDONG PROVINCE |
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Effective date of registration: 20120309 Address after: 264006 No. 228 Changjiang Road, Yantai Economic Development Zone, Shandong, China Patentee after: Langchao Lejin Digital Mobile Communication Co., Ltd. Address before: Two Beijing 100102 Chaoyang District city in Wangjing Lize Park No. 203 Petrova building block B Patentee before: LG Electronic (China) Research and Development Center Co., Ltd. |
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