CN104754235A - Electronic black card device for video recording equipment and imaging method thereof - Google Patents
Electronic black card device for video recording equipment and imaging method thereof Download PDFInfo
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- CN104754235A CN104754235A CN201310739810.4A CN201310739810A CN104754235A CN 104754235 A CN104754235 A CN 104754235A CN 201310739810 A CN201310739810 A CN 201310739810A CN 104754235 A CN104754235 A CN 104754235A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 45
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract 2
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- 230000015572 biosynthetic process Effects 0.000 description 2
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Abstract
Provided is an electronic black card device for video recording equipment. The video recording equipment comprises a photosensitive element and an imaging processor which are connected with each other. The device comprises a monochromatic reversed electronic screen and a single-phase reversed processor used for controlling on-off of the monochromatic reversed electronic screen. The monochromatic reversed electronic screen is stacked in front of the photosensitive element. The single-phase reversed processor is connected with the photosensitive element and the monochromatic reversed electronic screen. The imaging method comprises the following steps: firstly, initial imaging is carried out; secondly, initial imaging data is acquired and analyzed; thirdly, the monochromatic reversed electronic screen blocks an optical path and synchronously reverses secondary imaging; fourthly, secondary imaging data is revised; and fifthly, an output picture is imaged. According to the invention, the optical path is blocked from entering an over-exposed area of the photosensitive element, so that exposure of less-exposed and over-exposed areas of the whole imaged picture can be controlled accurately, and the video recording equipment can obtain an image of truly consistent exposure. The monochromatic reversed electronic screen can be used as a mechanical shutter to make the power consumption of the video recording equipment lower, and is more suitable for image shutters with high anti-shake requirement.
Description
Technical field
The present invention relates to a kind of electronics black card device and formation method thereof of camera-shooting and recording device.
Background technology
Chinese patent literature CN101651785B has announced a kind of imaging device on November 21st, 2012, and it comprises an image sensor and the black card of an electronics.Described image sensor comprises photosurface and the microprocessor that is provided with multiple photosensitive unit.Described microprocessor comprises Luminance Analysis module and judge module.Described Luminance Analysis module is carried out analysis to ambient brightness and is drawn optimum exposure time.Described judge module judges whether image has over-exposed region.The black photosurface side being positioned in image sensor of described electronics, it comprises the multiple switch element corresponding with photosensitive unit and a control unit.Described control unit for calculating the opening time of each switch element, and controls the opening and closing of each switch element according to the opening time of each switch element.It is said that the imaging device of this invention, by the sensitive time of each photosensitive unit of each switch element open and close controlling of the black card of electronics, just can prevent image overexposure before video generation.
But the black of this device is positioned on multiple photosensitive unit faces of photosurface side, and each unit will be analyzed and control the step realizations such as each unit, step is comparatively loaded down with trivial details, if equal as computing under sharp weapon, must affect arithmetic speed, the use of high-speed shutter can not be adapted to, cannot support B door, more not support dynamically to shoot with video-corder (i.e. video), and picture is excessively unnatural yet, noise is also more, and R&D costs are also high simultaneously.
Summary of the invention
Object of the present invention aims to provide a kind of electronics black card device.
The electronics black card device of a kind of camera-shooting and recording device designed by this object, described camera-shooting and recording device comprises interconnective photo-sensitive cell and imaging processor, and its architectural feature is that described electronics black card device comprises monochromatic anti-phase electrical screen and the single-phase anti-phase processor for controlling monochromatic anti-phase electrical screen switch; Monochromatic anti-phase electrical screen is layered in before photo-sensitive cell, and single-phase anti-phase processor is connected with photo-sensitive cell, monochromatic anti-phase electrical screen.
Region-wide when the anti-phase electrical screen of described monochrome is closed is transparent, is region-wide or regional area is anti-phase black when monochromatic anti-phase electrical screen is opened.
An imaging mode for the electronics black card device of camera-shooting and recording device, it comprises the following steps:
One, monochromatic anti-phase electrical screen is closed, and photo-sensitive cell carries out initial imaging;
Two, single-phase anti-phase processor obtains initial imaging data; If there is overexposure region and owe region of exposing to the sun, then control monochromatic anti-phase electrical screen and open, the scope of described opened areas is consistent with the overexposure region of corresponding the data obtained; If without overexposure region, then direct imaging exports picture;
Three, monochromatic anti-phase electrical screen blocks the synchronous anti-phase secondary imaging of light path; Utilize the opened areas of monochromatic anti-phase electrical screen first to block overexposure region light path, allow and owe to expose to the sun after region first exposes certain hour, monochromatic anti-phase electrical screen is just closed, and now, owe to expose to the sun region and overexposure region expose simultaneously, and photo-sensitive cell obtains secondary imaging;
Four, imaging processor correction secondary imaging data;
Five, imaging exports picture.
The present invention has following beneficial effect:
1, monochromatic anti-phase electrical screen accurately can be blocked light path and be entered overexposure region on photo-sensitive cell, thus deficiently exposing to the sun and the exposure in overexposure region of accurately controlling whole picture of getting married, make camera-shooting and recording device can obtain the consistent image (picture) of real exposure.
2, monochromatic anti-phase electrical screen can serve as mechanical shutter, makes camera-shooting and recording device power consumption lower, is more suitable for for needing stabilization to require high image (picture) shutter.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the schematic diagram of an embodiment.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
See Fig. 1-Fig. 2, the electronics black card device of this kind of electronics black card device camera-shooting and recording device, described camera-shooting and recording device comprises interconnective photo-sensitive cell 1 and imaging processor 3, and its electronics black card device comprises monochromatic anti-phase electrical screen 2 and the single-phase anti-phase processor 4 for controlling monochromatic anti-phase electrical screen 2 switch; Monochromatic anti-phase electrical screen 2 is layered in before photo-sensitive cell 1, and single-phase anti-phase processor 4 is connected with photo-sensitive cell 1, monochromatic anti-phase electrical screen 2.
Region-wide for transparent when monochromatic anti-phase electrical screen 2 is closed, be region-wide when monochromatic anti-phase electrical screen 2 is opened or regional area is anti-phase black.
An imaging mode for the electronics black card device of camera-shooting and recording device, it comprises the following steps:
One, monochromatic anti-phase electrical screen 2 is closed, and now monochromatic anti-phase electrical screen 2 is completely transparent, does not affect light path and enters photo-sensitive cell 1, and photo-sensitive cell 1 carries out initial imaging;
Two, single-phase anti-phase processor 4 obtains initial imaging data; If there is overexposure region and owe region of exposing to the sun, then control monochromatic anti-phase electrical screen 2 to open, the scope of opened areas is consistent with the overexposure region of corresponding the data obtained, makes monochromatic anti-phase region and overexposure region overlapping, block the light path of this part, suitable its temporarily cannot imaging on photo-sensitive cell 1; If without overexposure region, then direct imaging exports picture;
Three, monochromatic anti-phase electrical screen 2 blocks the synchronous anti-phase secondary imaging of light path; Utilize the opened areas of monochromatic anti-phase electrical screen 2 first to block overexposure region light path, allow and owe to expose to the sun after region first exposes certain hour, monochromatic anti-phase electrical screen 2 is just closed, and now, owe to expose to the sun region and overexposure region expose simultaneously, and photo-sensitive cell 1 obtains secondary imaging;
Four, imaging processor 3 revises secondary imaging data, comprises and revises exposure, noise reduction, contrast, threshold value etc.;
Five, imaging exports picture.
This electronics black card device operation principle: monochromatic anti-phase electrical screen 2 is close to and is fixed on the photosurface of photo-sensitive cell 1, when monochromatic anti-phase electrical screen 2 does not open work, it is a transparent electrical screen, light path can be passed through smoothly and arrive on photo-sensitive cell 1, camera-shooting and recording device (camera, video tape recorder etc.) to after the initial imaging of light path, single-phase anti-phase processor 4 can detect the overexposure region of this imaging picture and owe region of exposing to the sun, and drive the relative position in the corresponding overexposure region of monochromatic anti-phase electrical screen 2 to open, its opened areas scope and imaging aspect ratio in the same size, real-time synchronization is anti-phase.During secondary imaging, region of owing to expose to the sun first obtains Correct exposure, and then then overexposure region just exposes owing to being blocked at the beginning, namely through relatively pressing dark process, make overexposure region also obtain Correct exposure, so export all balanced picture of whole picture exposure, be also conducive to the noise reduction realizing picture.This electronics black card device can combine with the photo-sensitive cell of camera-shooting and recording device imaging, by the optimization of software, multiple art pattern effect can be synthesized further, as the process of transparency, color range, emergence, contrast, threshold value, linear, soft light, for user's post-processed reduces many time, increase the playability of camera-shooting and recording device.In addition, this electronics black card device also supports real-time anti-phase generation dynamic menu, and go back easily extensible shutter support, B door etc., the excessive remarkable fluency of image quality, noise reduction are good.
Claims (3)
1. the electronics black card device of a camera-shooting and recording device, described camera-shooting and recording device comprises interconnective photo-sensitive cell (1) and imaging processor (3), it is characterized in that described electronics black card device comprises monochromatic anti-phase electrical screen (2) and the single-phase anti-phase processor (4) for controlling monochromatic anti-phase electrical screen (2) switch; Monochromatic anti-phase electrical screen (2) is layered in before photo-sensitive cell (1), and single-phase anti-phase processor (4) is connected with photo-sensitive cell (1), monochromatic anti-phase electrical screen (2).
2. the electronics black card device of camera-shooting and recording device according to claim 1, is characterized in that: region-wide for transparent when the anti-phase electrical screen of described monochrome (2) is closed, and is region-wide or regional area is anti-phase black when monochromatic anti-phase electrical screen (2) is opened.
3. an imaging mode for the electronics black card device of camera-shooting and recording device as claimed in claim 1, is characterized in that: comprise the following steps:
One, monochromatic anti-phase electrical screen (2) is closed, and photo-sensitive cell (1) carries out initial imaging;
Two, single-phase anti-phase processor (4) obtains initial imaging data; If there is overexposure region and owe region of exposing to the sun, then control monochromatic anti-phase electrical screen (2) and open, the scope of described opened areas is consistent with the overexposure region of corresponding the data obtained; If without overexposure region, then direct imaging exports picture;
Three, monochromatic anti-phase electrical screen (2) blocks the synchronous anti-phase secondary imaging of light path; The opened areas of monochromatic anti-phase electrical screen (2) is utilized first to block overexposure region light path, allow and owe to expose to the sun after region first exposes certain hour, monochromatic anti-phase electrical screen (2) is just closed, now, owe to expose to the sun region and overexposure region exposes simultaneously, and photo-sensitive cell (1) obtains secondary imaging;
Four, imaging processor (3) revises secondary imaging data;
Five, imaging exports picture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739810.4A CN104754235B (en) | 2013-12-27 | 2013-12-27 | The electronics black card device and its imaging method of a kind of camera-shooting and recording device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739810.4A CN104754235B (en) | 2013-12-27 | 2013-12-27 | The electronics black card device and its imaging method of a kind of camera-shooting and recording device |
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| CN104754235A true CN104754235A (en) | 2015-07-01 |
| CN104754235B CN104754235B (en) | 2018-02-16 |
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| CN201310739810.4A Expired - Fee Related CN104754235B (en) | 2013-12-27 | 2013-12-27 | The electronics black card device and its imaging method of a kind of camera-shooting and recording device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105872401A (en) * | 2016-04-29 | 2016-08-17 | 努比亚技术有限公司 | Light reduction device for adjusting transmittance and terminal thereof and transmittance control method |
| WO2017206658A1 (en) * | 2016-05-30 | 2017-12-07 | 努比亚技术有限公司 | Mobile terminal and method for exposure thereof, and computer storage medium |
| CN111385486A (en) * | 2018-12-29 | 2020-07-07 | 北京小米移动软件有限公司 | Control method and device of image acquisition equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020140841A1 (en) * | 2001-03-28 | 2002-10-03 | Tadashi Sasaki | Apparatus for detecting focusing status of taking lens |
| CN1787613A (en) * | 2004-12-06 | 2006-06-14 | 索尼株式会社 | Imaging apparatus, imaging method and imaging processing program |
| CN101420522A (en) * | 2007-10-22 | 2009-04-29 | 华晶科技股份有限公司 | Black card controlling method and electronic device applying the method |
| CN101651785A (en) * | 2008-08-15 | 2010-02-17 | 鸿富锦精密工业（深圳）有限公司 | Imaging device and imaging method |
-
2013
- 2013-12-27 CN CN201310739810.4A patent/CN104754235B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020140841A1 (en) * | 2001-03-28 | 2002-10-03 | Tadashi Sasaki | Apparatus for detecting focusing status of taking lens |
| CN1787613A (en) * | 2004-12-06 | 2006-06-14 | 索尼株式会社 | Imaging apparatus, imaging method and imaging processing program |
| CN101420522A (en) * | 2007-10-22 | 2009-04-29 | 华晶科技股份有限公司 | Black card controlling method and electronic device applying the method |
| CN101651785A (en) * | 2008-08-15 | 2010-02-17 | 鸿富锦精密工业（深圳）有限公司 | Imaging device and imaging method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105872401A (en) * | 2016-04-29 | 2016-08-17 | 努比亚技术有限公司 | Light reduction device for adjusting transmittance and terminal thereof and transmittance control method |
| WO2017185787A1 (en) * | 2016-04-29 | 2017-11-02 | 努比亚技术有限公司 | Dimming device for adjusting light transmittance and terminal thereof, and light transmittance control method |
| WO2017206658A1 (en) * | 2016-05-30 | 2017-12-07 | 努比亚技术有限公司 | Mobile terminal and method for exposure thereof, and computer storage medium |
| CN111385486A (en) * | 2018-12-29 | 2020-07-07 | 北京小米移动软件有限公司 | Control method and device of image acquisition equipment |
| CN111385486B (en) * | 2018-12-29 | 2022-04-08 | 北京小米移动软件有限公司 | Control method and device of image acquisition equipment |
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| Publication number | Publication date |
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| CN104754235B (en) | 2018-02-16 |
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