CN101217621A - Camera module, electronic apparatus having the same and method of manufacturing the same - Google Patents

Camera module, electronic apparatus having the same and method of manufacturing the same Download PDF

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Publication number
CN101217621A
CN101217621A CNA2008100015266A CN200810001526A CN101217621A CN 101217621 A CN101217621 A CN 101217621A CN A2008100015266 A CNA2008100015266 A CN A2008100015266A CN 200810001526 A CN200810001526 A CN 200810001526A CN 101217621 A CN101217621 A CN 101217621A
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CN
China
Prior art keywords
camera module
data
electronic equipment
end value
image
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CNA2008100015266A
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Chinese (zh)
Inventor
增田孝
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Acutelogic Corp
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Acutelogic Corp
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Publication of CN101217621A publication Critical patent/CN101217621A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/765Interface circuits between an apparatus for recording and another apparatus
    • H04N5/77Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
    • H04N5/772Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera the recording apparatus and the television camera being placed in the same enclosure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80Camera processing pipelines; Components thereof
    • H04N23/84Camera processing pipelines; Components thereof for processing colour signals
    • H04N23/88Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2101/00Still video cameras
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/907Television signal recording using static stores, e.g. storage tubes or semiconductor memories

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

A camera module (1) is provided with a camera body (21), an image picking-up element (8), which is detachably set at the camera body (21), carries out a photoelectric conversion of an object image and outputs an image signal, a variable gain amplifier (11) that corrects gain of the image signal, an A/D converter (12) that carries out an A/D conversion of the image signal and output a digital image signal, a memory medium (18), etc. The camera body (21) is provided with an image processing unit (22) that adjusts a digital image signal to predetermined image data (P) and outputs them. The camera module (1) is mounted on a predetermined electronic apparatus before it is set to the camera body (21), so that the memory medium (18) stores an adjusted result value (Q) of a digital image signal (C) corresponding to the predetermined image data (P) after adjustment.

Description

Camera module, the electronic equipment that possesses this module, and their manufacture method
Technical field
The present invention relates to constitute camera module that can on the electronic equipment main body, freely load and unload and the electronic equipment that possesses this module.
Background technology
In recent years, high performance and miniaturization along with digital camera, continually develop to be installed in portable telephone or PHS (Personal Handyhone System by the camera module that imaging apparatus and camera lens constitute with freely loading and unloading, personnel hand system), the electronic equipment in the PDA mobile devices such as (Personal DigitalAssistant, personal digital assistants).
And after camera module was assembled in the mobile device main body, for the image quality deterioration that the characteristic deviation that reduces by camera module causes, what have adjusted at the mobile device main body side.
In addition, in order to alleviate the adjustment burden of mobile device main body side, have following camera module, it has flash memory, and has stored straggling parameter and camera module control program that camera is adjusted in be used to corresponding with final products.
For example, in the manufacturing step of camera module, data adjusted by camera that will be corresponding with final products and control is arrived flash memory with procedure stores, then, adjust data and camera module control program based on these cameras, automatically adjust camera module and dispatch from the factory (for example, with reference to patent documentation 1).
Specifically, in camera module, has CCD (the ChargeCoupled Devices that takes by the shooting thing, charge coupled device), the output signal of these CCD is carried out DSP (the Digital Signal Processor of image processing, digital signal processor), stored the required camera of image processing that this DSP carries out and adjusted parameter and module controls flash memory with program, in the manufacturing step of camera module, data adjusted by camera that will be corresponding with final products and module controls arrives flash memory with procedure stores.Then, adjust data and module controls program, adjust camera module automatically and dispatch from the factory based on these cameras
Patent documentation 1: TOHKEMY 2005-33691 communique
But, in recent years, the application of electronic equipments such as mobile device is high performance and variation, according to as the existing example, adjust data and camera module control program based on the camera that is stored in the flash memory, the automatic structure of adjusting camera module and dispatching from the factory, can not get the result after the camera module actual installation is in the mobile device main body, so between mobile device main body and module controls are with program, produce when not matching a little, also might damage picture quality, may be difficult to take some countermeasures simultaneously.
Summary of the invention
Therefore, the present invention tackles the high performance and the variation of electronic equipment, its purpose is to provide a kind of can omit the adjustment that the deviation by camera module causes at the electronic equipment main body side, the camera module of the graphics processing unit that can mate electronic equipment accurately simultaneously and had.
The invention of the first aspect of finishing in order to reach such purpose is a kind of camera module, and it can freely load and unload on the electronic equipment main body, and this camera module comprises: camera lens, its guiding body image that is taken; Imaging apparatus, it is set side by side with a plurality of components of photo-electric conversion, the body image that is taken by described camera lens guiding is carried out light-to-current inversion, thereby export the picture signal of multiple color; Variable gain amplifier, it proofreaies and correct the gain of described picture signal; The A/D converter, it will carry out the A/D conversion from the picture signal of described variable gain amplifier output, thus the output digital image signal; And storage medium, it is characterized in that, in described electronic equipment main body, have described data image signal is adjusted into the image processing part of exporting after the view data of regulation, before this camera module being installed on the described electronic equipment main body, attach it on the electronic equipment of regulation storage and the view data of described adjusted regulation adjustment end value corresponding, described data image signal in described storage medium in advance.
Camera module according to the invention of first aspect, before being installed to this camera module on the electronic equipment main body, attach it in advance on the electronic equipment of regulation, stored the adjustment end value of the data image signal corresponding in the storage medium with the view data of adjusted regulation, so after camera module being installed in the electronic equipment main body, can save the step of the adjusted value of obtaining the manufacture deviation that is used to proofread and correct camera module, and can mate accurately with the image processing part of electronic equipment main body, thereby can access high-quality and high-precision image, and then also can be applicable to the high performance of electronic equipment, high precision int.
In other words, after camera module being installed in the electronic equipment main body, when the adjustment of the manufacture deviation that is used to eliminate camera module, use the adjustment end value in the storage medium that is stored in camera module to get final product, so can omit the step of obtaining adjusted value.In addition, at this moment, as long as in the electronic equipment of regulation, have the identical image processing part of image processing part with the electronic equipment main body of camera module actual installation.Thus, camera module can mate with the electronic equipment main body of installing accurately.
In addition, the camera module of first aspect is as the invention of second aspect, described adjustment end value is the data that any the action adjustment at least in following each action is obtained: be used to adjust the exposure to the light quantity of described imaging apparatus guiding, be used for the automatic focusing of automatic focusing, be used to adjust the white balance of the white of described view data, the color reproduction that is used to make the tone of described view data and regulation to conform to, photoflash lamp (strobo) action etc. of shining the body that is taken with the shutter interlock, thereby after camera module being installed on the electronic equipment main body, can omit and obtain exposure, automatically focusing, white balance, color reproduction, the step of the adjusted value of photoflash lamp action etc., thereby can improve convenience, can obtain high-quality and high-precision image simultaneously.In addition, " strobo " is the trade mark of photoflash lamp research company, also can replace " strobo " and uses " flash " or " speed light " etc.
In addition, the camera module of first aspect is as the invention of the third aspect, comprise in the described adjustment end value adjustment to the exposure of the light quantity of described imaging apparatus guiding, be used for automatic focusing automatic focusing, be used to adjust the white balance of the white of described view data, the values that are used to make color reproduction that described view data conforms to the tone of regulation etc. all to move, thereby can further omit the step of the adjusted value of obtaining the electronic equipment main body side, and obtain high-quality and high-precision image.
Then, the camera module of first aspect is as the invention of fourth aspect, described adjustment end value is the data that are used to proofread and correct the aberration that is caused by described camera lens, thereby after camera module being installed on the electronic equipment main body, can omit the step of obtaining the adjusted value that is used to proofread and correct the distorton aberration that causes by camera lens and chromatic aberration, use is stored in the adjustment end value in the storage medium, thereby can obtain high-quality and high-precision image, the machining accuracy of camera lens is relaxed, thereby can improve productivity.
Then, the camera module of first aspect is as the invention of the 5th aspect, described adjustment end value is to have reduced the uneven and data that obtain of sensitivity between the adjacent same color pixel, thereby after camera module being installed on the electronic equipment main body, can omit the step of obtaining the adjusted value that is used for the desensitization inequality, and can improve convenience, obtain high-quality and high-precision image simultaneously.
In addition, the camera module of first aspect is as the invention of the 6th aspect, described adjustment end value is to have adjusted the data that obtain by the effective pixel area in the pixel region of described imaging apparatus output, thereby after camera module being installed on the electronic equipment main body, can omit the step of adjusting effective pixel area, and can improve convenience, obtain high-quality and high-precision image simultaneously.
In other words, owing to easily find normally to carry out the pixel region (below be called the inactive pixels zone) of image transform, so the preferred effective pixel area of having removed after this inactive pixels zone of adjusting in advance of imaging apparatus at periphery.In addition, set the inactive pixels zone that is known as optical black (optical black) (rayed less than pixel region) when removing dark current noise at the peripheral part of imaging apparatus, also adjust the inactive pixels zone in advance, and it is stored in the storage medium as adjusting end value, thereby can improve convenience.In addition, in effective pixel area, increase shadow (shading) as required and preferably and proofread and correct.Thus, can reduce the light and shade distortion of effective pixel area accurately.
In addition, the camera module of first aspect is as the invention of the 7th aspect, described adjustment end value is to be used for data that the dark current of described imaging apparatus is setovered, thereby after camera module being installed on the electronic equipment main body, can omit the step of the bias of obtaining dark current, and can improve convenience, obtain high-quality and high-precision image simultaneously.
In other words, owing to finding in each of a plurality of components of photo-electric conversion that generally exist in imaging apparatus that dark current diminishes the possibility of image quality, so by in advance in storage medium storage be used for the data of dark current being setovered at each pixel, thereby can generate accurately with incide imaging apparatus in the corresponding image of light quantity.
Then, the camera module of second aspect is as the invention of eight aspect, the adjustment end value of described exposure is the data that the either party at least in exposure sensitivity, aperture, the shutter speed etc. is adjusted, thereby after camera module being installed on the electronic equipment main body, can omit the step of obtaining the adjusted value that is used to reduce exposure bias, convenience be can improve, high-quality and high-precision image obtained simultaneously.
Then, the camera module of second aspect is as the invention of the 9th aspect, the adjustment end value of described automatic focusing is the original position to described camera lens, the fiducial value that focusing is estimated, with the shooting multiplying power or with the mobile and position of the corresponding described camera lens of distance of the described body image that is taken, the zoom track (tracking) that the described camera lens corresponding with the zoom action moves, followability for the shift action of the described body that is taken, the gain of the described picture signal corresponding with shutter speed, starting to the secondary light source of the described body irradiation light that is taken, either party at least in the track of the described lens location corresponding with F value (F number) (parameter of brightness of expression camera lens) etc. adjusts and the data that obtain, thereby after camera module being installed on the electronic equipment main body, can omit the step of obtaining the adjusted value that is used to focus, convenience be can improve, high-quality and high-precision image obtained simultaneously.
Then, the camera module of second aspect or the 9th aspect is as the invention of the tenth aspect, the adjustment end value of described automatic focusing is to be used for carrying out data focal adjustments, that adjust to the size of window (window) number set at check image, this window, to the either party at least in the weighting weights of the focal adjustments of each window of these a plurality of windows etc. at each the shooting multiplying power in a plurality of shooting multiplying powers, thereby can suitably adjust the contrast of image according to the shooting multiplying power, can access high-quality image.
Then, the camera module of second aspect is as the invention of the tenth one side, the adjustment end value of described white balance is that the light source colour based on the picture signal of exporting from described imaging apparatus is estimated, with the corresponding white balance gains of described light source colour estimated value, to be red by the image signal transformation of described capturing element output, green, the data that either party at least in the colour switching matrix coefficient of the color data of blue reference colour etc. adjusts, thereby after camera module being installed on the electronic equipment main body, can omit and obtain the step that is used to make the adjusted value that white balance conforms to, convenience be can improve, high-quality and high-precision image obtained simultaneously.
Then, the camera module of first aspect is as the invention of the 12 aspect, possesses the image quality adjustment part in the described electronic equipment main body, this image quality adjustment part is based on described data image signal, carry out color interpolation, false colour suppresses, noise suppressed, the edge strengthens, colourity inhibition etc., described color interpolation is the processing that each pixel from described imaging apparatus output is generated the color component of RGB three looks, the adjustment end value that is stored in the described storage medium is to described color interpolation, false colour suppresses, noise suppressed, the edge strengthens, either party at least in the colourity inhibition etc. adjust and data, thereby after camera module being installed on the electronic equipment main body, can be omitted in the electronic equipment main body side and obtain color interpolation, false colour suppresses, noise suppressed, the edge strengthens, the step of the adjusted value of colourity inhibition etc., use is stored in the adjustment end value in the storage medium, can be accurately and the image processing part coupling of electronic equipment main body, and can access high-quality, high-precision image.
Then, the camera module of first aspect is as the invention of the 13 aspect, described adjustment end value is the data of the brightness coupling that is adjusted to and stipulates, thereby after camera module being installed on the electronic equipment main body, can omit and obtain the step that is used to make the adjusted value that brightness conforms to, use is stored in the adjustment end value in the storage medium, can reproduce the brightness of the body that is taken smoothly, and can access high-quality, high-precision image.
Then, the camera module of first aspect is as the camera module of the 14 aspect, described adjustment end value is the corresponding gamma transformation value of color display characteristic with the display that shows described view data, thereby after camera module being installed on the electronic equipment main body, can omit the step of the adjusted value of obtaining the gamma transformation value, use is stored in the adjustment end value in the storage medium, can access the high-quality of the color display characteristic that meets display, high-precision image.
Then, the camera module of second aspect is as the invention of the 15 aspect, the adjustment end value of described photoflash lamp action is the data that the fluorescent lifetime of this photoflash lamp corresponding with guide number (strobo guide number) is adjusted, thereby after camera module being installed on the electronic equipment main body, can omit the step of the adjusted value of obtaining the fluorescent lifetime corresponding with guide number, use is stored in the adjustment end value in the storage medium, the suitable exposure corresponding can be accessed, high-quality can be accessed with guide number, high-precision image.
Then, any one camera module of putting down in writing of first aspect to the 15 aspects is as the invention of the 16 aspect, described adjustment end value corresponds respectively to predefined a plurality of shooting scene, thereby can further improve the surcharge of this camera module.
Then, the invention of the 17 aspect is a kind of electronic equipment, described electronic equipment comprises that the data image signal that will import by camera module is transformed to the image processing part of exporting after the view data of regulation, it is characterized in that described camera module is the camera module of any one record in first aspect to the 16 aspects.
The electronic equipment of the 17 aspect possesses the camera module as any one record of the first to the 16 aspect, so it is same with the invention of any one record of the first to the 16 aspect, after camera module being installed on the electronic equipment main body, can omit the step of the adjusted value of obtaining the manufacture deviation that is used to proofread and correct camera module, and the image processing part of camera module and electronic equipment main body is mated accurately, obtain high-quality, high-precision image, and can adapt to high performance, the high precision int of electronic equipment.
Then, the invention of the tenth eight aspect is a kind of manufacture method of camera module, and described camera module can freely load and unload on the electronic equipment main body, and described camera module has used: camera lens, its guiding body image that is taken; Image unit, it carries out light-to-current inversion to the body image that is taken by described camera lens guiding, thereby exports the picture signal of multiple color; The variable gain amplifying unit, it proofreaies and correct the gain of described picture signal; The A/D converter unit, it will carry out the A/D conversion from the picture signal of described variable gain amplifying unit output, and the output digital image signal; And memory cell, it is characterized in that, in described electronic equipment main body, use described digital signal is adjusted into the graphics processing unit of exporting after the view data of regulation, before this camera module being installed on the described electronic equipment main body, attach it on the electronic equipment of regulation storage and the view data of described adjusted regulation adjustment end value corresponding, described data image signal in described memory cell in advance.
The invention that the manufacture method of the camera module of the tenth eight aspect and the first to the 16 aspect are put down in writing is same, because this camera module is installed in the electronic equipment of regulation in advance, and has memory cell, this cell stores the adjustment end value of the data image signal corresponding in the image processing part of this electronic equipment main body with adjusted specified image data, so after camera module being installed on the electronic equipment main body, can omit the step of the adjusted value of obtaining the manufacture deviation that is used to proofread and correct camera module, and the image processing part of camera module and electronic equipment main body is mated accurately, and obtain high-quality, high-precision image, and can adapt to the high performance of electronic equipment, high precision int.
In addition, the manufacture method of the camera module of the tenth eight aspect is as the invention that the 19 aspect is put down in writing, described adjustment end value is the data that any action at least in following each action is adjusted: be used to adjust the exposure to the light quantity of described imaging apparatus guiding, be used for the automatic focusing of automatic focusing, be used to adjust the white balance of the white of described view data, the color reproduction that is used to make the tone of described view data and regulation to conform to, photoflash lamp action etc., thereby the invention as second aspect is same, after camera module being installed on the electronic equipment main body, can omit and obtain exposure, automatically focusing, white balance, color reproduction, the step of the adjusted value of photoflash lamp action etc., convenience can be improved, high-quality and high-precision image can be obtained simultaneously.
In addition, the manufacture method of the camera module of the tenth eight aspect is as the invention of the 20 aspect, comprise in the described adjustment end value adjustment to the exposure of the light quantity of described imaging apparatus guiding, be used for automatic focusing automatic focusing, be used to adjust the white balance of the white of described view data, the numerical value that are used to make color reproduction that described view data conforms to the tone of regulation etc. all to move, thereby it is same with the invention of the third aspect, the step of the adjusted value of obtaining the electronic equipment main body side be can further omit, and high-quality and high-precision image obtained.
In addition, the manufacture method of any one camera module of putting down in writing of the tenth eight aspect to the 20 aspect kinds is as the invention of the 20 one side, described adjustment end value corresponds respectively to predefined a plurality of shooting scene, thereby can further improve the surcharge of camera module.
Then, the invention of the 22 aspect is a kind of manufacture method of electronic equipment, described electronic equipment uses and will be adjusted into the graphics processing unit of exporting after the view data of regulation by the data image signal of camera module input, and can freely load and unload described camera module, it is characterized in that the manufacture method of described camera module is any one in the tenth eight aspect to the 20 one side.
Because the manufacture method of the electronic equipment of the 22 aspect is used the manufacture method of the camera module of any one record in the tenth eight aspect to the 20 one side, so it is same with the invention of record in the tenth eight aspect to the 20 one side, after camera module being installed on the electronic equipment main body, can omit the step of the adjusted value of obtaining the manufacture deviation that is used to proofread and correct camera module, and the image processing part of camera module and electronic equipment main body is mated accurately, thereby obtain high-quality, high-precision image, and can adapt to the high performance of electronic equipment, high precision int.
Camera module of the present invention and electronic equipment and their manufacture method are after being installed to camera module on the electronic equipment main body, can omit the step of the adjusted value of obtaining the manufacture deviation that is used to proofread and correct camera module, and the image processing part of camera module and electronic equipment main body is mated accurately, and obtain high-quality, high-precision image, and can adapt to high performance, the high precision int of electronic equipment.
In addition, camera module of the present invention and electronic equipment and their manufacture method are after being installed to camera module on the electronic equipment main body, can omit the step of the adjusted value of obtaining exposure, focusing automatically, white balance, color reproduction, photoflash lamp action etc., convenience can be improved, high-quality and high-precision image can be obtained simultaneously.
In addition, in the camera module of the present invention, because adjusting end value is following data etc.: the data that are used to proofread and correct the aberration that is caused by camera lens, be used to reduce the data of the sensitivity inequality between the adjacent same color pixel, be used for data that effective pixel area is adjusted, be used for data that the dark current of imaging apparatus is setovered, be adjusted to the data that conform to the brightness of stipulating, the corresponding gamma transformation value of color display characteristic with the display of display image, the data corresponding etc. with predefined a plurality of shooting scenes, so after camera module being installed on the electronic equipment main body, can omit the step of obtaining these adjusted values, can improve convenience, obtain high-quality image quality simultaneously.
In addition, camera module of the present invention is after being installed to camera module on the electronic equipment main body, can omit the step of the adjusted value of obtaining color interpolation, false colour inhibition, noise suppressed, edge enhancing, colourity inhibition etc. at the electronic equipment main body side, use is stored in the adjustment end value in the storage medium, can be accurately and the image processing part coupling of electronic equipment main body, can access high-quality, high-precision image.
Description of drawings
Fig. 1 is the block diagram of structure of the portable digital camera 100 of expression present embodiment.
Fig. 2 is the block diagram of the structure of the image processing part 22 that had of camera body 21 sides in the digital camera 100 of the same embodiment of expression.
Fig. 3 is the key diagram that the exposure of same embodiment is adjusted.
Fig. 4 is the key diagram that the automatic focusing of same embodiment is adjusted.
Fig. 5 is the key diagram that the color reproduction of same embodiment is adjusted.
Fig. 6 is the key diagram that the color reproduction of same embodiment is adjusted.
Label declaration
1... camera module, 2... anterior camera lens, 3... zoom lens, (4...Iris aperture), use camera lens 5... proofread and correct, 6... focus lens, 7... filter, 8... imaging apparatus, 9...AFE (AnalogFront End, AFE (analog front end)), 10... correlated double sampling circuit, 11... variable gain amplifier (AGC:Automatic Gain Control), 12...A/D converter, 13...Iris drive division, 14,15a, 19a... transducer, 15... focusing test section, 16... focusing drive division, 17...TG (TimingGenerator, timing generator), 18... storage medium (EEPROM:Electrically ErasableProgrammable Read-only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)), 19... zoom test section, 20... zoom drive portion, 21... camera body, 22... image processing part, 23...ROM (Read Only Memory), 24...CPU (Central Processing Unit, central processing unit), 25... pretreatment portion (IFP:Image Front Processor), 25... pretreatment portion, 26... exposure-processed portion, 27... automatic focusing process portion, 27a... high pass filter, 27b...AF evaluation portion, 28... white balance handling part, 29... color reproduction handling part, 29a... color interpolation portion, 29b...CC (ColorCorrection, color correction) matrix portion, 29c... image quality correction unit, 29d... gamma transformation portion, 30... color reproduction coefficient settings portion, 30a... piece accumulated unit, 30b... light source estimation unit, 30c... the color reproduction coefficient calculation unit, 30d... reference light source selected cell, 30e... reference light source data storage cell, 41... photoflash lamp, 42... secondary light source, 43... mechanical shutter, 50... interface, 50a... shooting scene selected cell, 100... digital camera (electronic equipment).
Embodiment
Then, based on an embodiment of description of drawings camera module of the present invention and electronic equipment.Fig. 1 is the block diagram of structure of the portable digital camera 100 of expression present embodiment, Fig. 2 is the block diagram of the structure of the image processing part 22 that had of camera body 21 sides in the digital camera 100 of the same embodiment of expression, Fig. 3 is the key diagram that the exposure of same embodiment is adjusted, Fig. 4 is the key diagram that the automatic focusing of same embodiment is adjusted, and Fig. 5 and Fig. 6 are the key diagrams that the color reproduction of same embodiment is adjusted.
As shown in Figure 1, digital camera 100 is portable digital camera (so-called electronic equipment of the present invention) that the image that will take and external host communicate, it is made of camera body (so-called electronic equipment main body of the present invention) 21 and the camera module 1 that can freely load and unload on camera body 21, to be transformed to the view data P of regulation by the image processing part 22 that camera body 21 is had by the image pickup signal S (body image is taken) that camera module 1 is taken, and output to not shown image processing part or monitor etc.In addition, graphics processing unit of the present invention is realized its function by image processing part 22.
Comprise in the camera module 1: anterior camera lens 2; Zoom lens 3; Proofread and correct with camera lens 5; Focus lens 6; Iris (aperture) 4; The filter (infrared ray is removed filter or optical filter) 7 of the reverberation of removing harmful infrared ray and being harmful to etc.; Carry out blocking and remove the mechanical shutter 43 that blocks to the incident light of imaging apparatus 8; Image pickup signal S carried out light-to-current inversion and export the imaging apparatus (CCD:Digital Signal Processor, digital signal processor) 8 of the analog picture signal of RGB three looks; To be transformed to the AFE (Analog Front End, AFE (analog front end)) 9 that exports behind the data image signal from the analog picture signal of imaging apparatus 8 outputs; With the periodic Control imaging apparatus 8 of regulation and the TG (Timing Generator) 17 of AFE 9; Stored with the storage medium (EEPROM:ElectricallyErasable Programmable Read-only Memory) 18 of the adjustment end value of image processing part 22 coupling of camera body 21 etc.In addition, image unit of the present invention, memory cell realize its function by imaging apparatus 8, storage medium 18 respectively.
And then, comprise in the camera module 1: the Iris drive division 13 that carries out the driving of Iris (aperture) 4; Detect the transducer 14 of the driving amount of Iris 4; Carry out the focusing drive division 16 of the axial slip driving of focus lens 6; Detect the focusing test section 15 of the slippage of focus lens 6; Carry out the zoom drive portion 20 of the axial slip driving of zoom lens 3; Detect the zoom test section 19 of the driving amount of zoom lens 3; Photoflash lamp 41; Be used to improve the secondary light source 42 of focusing precision in the dark etc.
Shown in Fig. 5 (a), imaging apparatus 8 is arranged the colour filter that constitutes with the Bayer that pixel is provided with accordingly by R (red) G (green) B (indigo plant) three looks, exports after will being transformed to the signal of telecommunication by the light quantity of versicolor color filter portions.
In addition, as shown in Figure 1, AFE 9 comprises remove the correlated double sampling circuit (CDS:Corelated Double Sampling) 10 of noise by the analog picture signal of imaging apparatus 8 outputs, to carry out the variable gain amplifier (AGC:Automatic Gain Control) 11 of the picture signal amplification of correlated-double-sampling by correlated double sampling circuit 10, to be transformed to the A/D converter 12 of data image signal etc. via the analog picture signal from imaging apparatus 8 of variable gain amplifier 11 inputs, to be data image signal with the sampling frequency conversion of stipulating from the picture signal of imaging apparatus 8 outputs, output to electronic equipment main body 21.In addition, the variable gain amplifying unit among the present invention, A/D converter unit are realized its function by variable gain amplifier 11, A/D converter 12 respectively.
In addition, camera module 1 also can use CMOS (Complementary Metal OxideSemiconductor Sensor, complementary metal oxide semiconductors (CMOS)) to replace imaging apparatus 8, correlated double sampling circuit 10, A/D converter 11 etc.
Then, before being installed to this camera module 1 on the electronic equipment main body 21, attach it on the electronic equipment of not shown regulation storage and the view data P adjustment end value Q corresponding, data image signal C that stipulates in storage medium 18 in advance.
Specifically, in the storage medium 18, as adjusting end value Q, stored the exposure, the automatic focusing that is used for automatic focusing that are used to adjust to the light quantity of imaging apparatus 8 guiding, being used to adjust white balance, the data that are used to the color reproduction that view data P is conformed to the tone of regulation, the action of adjusting photoflash lamp 41 etc. and other data that are used for the image quality adjustment etc. of the white of view data P.
In addition, in the storage medium 18, as adjust end value Q, stored the data that are used for proofreading and correct the aberration that causes by camera lens 2,3,5,6 etc., be used to reduce the sensitivity inequality between the adjacent same color pixel of the picture signal by imaging apparatus 8 outputs data, be used to adjust data, be used for data that the dark current of imaging apparatus 8 is setovered etc. via the effective pixel area in the pixel region of imaging apparatus 8 outputs.
Then, Image Signal Processing) 22, ROM (Read Only Memory camera body 21 comprises: the vision that cooperates the people will be the image processing part exported after the view data of prescribed form (image processing processor: from the digital signal conversion of camera module 1 output, read-only memory) 23, CPU (Central Processing Unit) 24 etc., CPU 24 come control figure camera 100 with program according to the control that is stored among the ROM 23 each handle.
As shown in Figure 2, image processing part 22 comprises: pretreatment portion (IFP:Image FrontProcessor) 25, set the exposure-processed portion 26 of exposure, focusing automatically automatic focusing process portion 27, adjust the white of view data P white balance handling part 28, be used to make color reproduction handling part 29 that view data P conforms to the tone of regulation etc.
Pretreatment portion 25 carries out the biasing of dark current part based on the adjustment end value of the dark current of storage in storage medium 18 to each picture element signal from camera module output.Specifically,, will be stored in the storage medium 18 from the data image signal amount of A/D converter 12 outputs in the timing of imaging apparatus not being injected light quantity, and with the bias of this storing value as dark current.At this moment, in storage medium 18, stored the bias of the dark current corresponding with each pixel in a plurality of pixels.
In addition, pretreatment portion 25 uses the adjustment end value of the valid pixel scope in the storage medium 18 that is stored in, and sets the valid pixel scope of the imaging apparatus 18 in whole pixel regions.Specifically, in whole pixel regions, detect the light and shade of image of output or the degree of distortion, and with the zone of allowed band as effective pixel area.In addition, at this moment, the valid pixel scope be shaped as the corresponding rectangle of picture with display unit (monitor or television receiver).
In addition, pretreatment portion 25 uses the adjustment end value between the neighbor that is stored in the storage medium 18, proofreaies and correct the sensitivity inequality between adjacent homochromy in the valid pixel scope.About the adjustment end value between the neighbor, at the appointed time the valid pixel scope is injected the regulation light quantity, detection is from the output valve of each pixel, carrying out each handles with the equalization of the output valve of color pixel, then, obtain deviation based on handle the mean value obtain by equalization, the reciprocal value of this deviation as adjusting end value, and is stored among the EEPROM 18 with respect to the mean value of each pixel.
Then, exposure-processed portion 26 uses the adjustment end value of the exposure sensitivity that is stored in the storage medium 18, aperture, shutter etc. to set conditions of exposure.In addition, CPU 24 obtains to be stored in and adjusts relevant adjustment end value with exposure in the recording medium 18, and cooperate with exposure-processed portion 26, obtain the optimum value of Iris 4, mechanical shutter 43, variable gain amplifier 11 etc., control drive division (not shown), variable gain amplifier 11 of Iris drive division 20, mechanical shutter 43 etc.
Shown in Fig. 3 (a), the adjustment end value of aperture is associated with the position 0~3 of Iris 4, is configured to eliminate the theoretical value of aperture AV and poor (error) of measured value.Promptly, Iris position 0,1,2,3 is set respectively Open (opening), AV4.0, AV5.0, the Close (closing) corresponding to aperture AV for, in order to eliminate the error of f-number of this moment, in storage medium 18, stored the adjustment end value of the command signal that is used to proofread and correct f-number.
And then, shown in Fig. 3 (b), in each Iris 4 position 0~3, based on light quantity from imaging apparatus 8 outputs, ask error amount, in order to eliminate this error, the command signal of the speed of correction mechanical shutter 43 or the gain of variable gain amplifier 11 with respect to predetermined regulation light quantity.Then, this corrected value is stored in the storage medium 18 as adjusting end value.
Specifically, in Iris position 0, Iris 4 is open, obtains the exposure AVo based on aperture 4, set shutter speed Tvref so that the exposure by Iris 4 and 43 outputs of mechanical type aperture becomes setting Vref, with the exposure Vref of this moment and shutter speed Tvref as fiducial value.Then, at Iris position 1~3, the exposure AVa when obtaining the f-number that is set at each regulation~AVc, and set the speed of mechanical shutter 43 or the gain (gain) of variable gain amplifier 11, so that eliminate the changing unit of the exposure of AV.
Then, based on the speed of the mechanical shutter of setting 43 or the gain (gain) of variable gain amplifier 11, measure exposure Va, Vb, Vc, and obtain difference with benchmark exposure Vref as AV error (adjustment end value) by Iris 4 and 43 outputs of mechanical type aperture.In addition, among Fig. 4, AV is an aperture, the exposure of the Iris 4 when Avo~Avc is each Iris position, and TV is a shutter, (AVo~AVC) is the theoretical value of the shutter speed that calculates of the changing unit for the exposure of eliminating AV to Tvref~Tvref+.
In addition,, measure the sequential chart of response starting order signal and the exposure that obtains this moment in advance,, proofread and correct timing via the initiating signal of CPU 24 outputs in order to eliminate the error of exposure for the starting action of mechanical shutter 43.Then, Ci Shi corrected value is stored in the storage medium 18 as adjusting end value.
In addition, shown in Fig. 3 (c), (d), for from the saturated output of the signal of imaging apparatus 8 output (accept the light quantity of regulation and when reaching capacity from the output voltage of imaging apparatus 8 outputs) along with effluxion, the bit number of the data processing when carrying out digital conversion in A/D converter 12 is set the Min.Gain of the gain (gain) in the variable gain amplifier 11 by the formula of G=20 * Log10 (Vadc/Vccd).
In addition, (obtain by the formula of Lsat * T) by I=120 * A2/ for iso sensitivity I when having used Min.Gain, corresponding to this iso sensitivity I, the Min.S of exposure sensitivity obtains by the formula of S=Log2 (ISO/3.125), and they are stored in the storage medium 18 as adjusting end value.In addition, Lsat is the exposure of the output of imaging apparatus 8 when saturated, and A is the F value, and T is a shutter speed.
In addition, in storage medium 18, the fluorescent lifetime corresponding with the index of photoflash lamp 41 is used as adjusts the end value storage.
Then, as shown in Figure 1, automatically focusing process portion 27 comprises the focusing control part that focus lens 6 is moved focus, and the zoom control part that zoom lens 3 is moved carry out the zoom action.
The focusing control part makes focus lens 6 go up at axial (directions X among the figure) by focusing drive division 16 and moves, and focusing test section 15 is controlled the position of focus lens 6 by the position of transducer 15a detection focus lens 6 based on this detection architecture.
On the other hand, in image processing part 22, as shown in Figure 2, the output from the data image signal C of camera module 1 output is being applied on the basis of preliminary treatment (processing the pretreatment portion 25), the part of data image signal C is being outputed to the AF evaluation 27b of portion via high pass filter 27a.At this moment, extract the signal component of high frequency by high pass filter 27a, and by the size detection contrast tolerance of the AF evaluation 27b of portion according to signal component, this contrasting signal is output to automatic focusing process portion 27 via CPU 24.
Then, automatically focusing process portion 27 is based on the command signal from CPU 24, adjust end value with reference to the output of focusing test section 15 and the AF of storage in storage medium 18, calculate the position of the focus lens 6 of contrast the best, and control focusing drive division 16 by CPU 24.In addition, CPU 24 obtains to be stored in and adjusts relevant adjustment end value with AF in the storage medium 18, and cooperate with automatic focusing process portion 27 and to obtain the optimum position of focus lens 6, and the control drive division 16 of focusing.
In addition, it is corresponding with the regulation zone of imaging apparatus 8 to constitute the contrasting signal that is output to the AF evaluation 27b of portion this moment, makes the operator come the zone of stipulating by interface 50a setting according to the shooting scene.
In addition, at each shooting multiplying power, in storage medium 18, stored the adjustment end value of having adjusted following equivalence: the weighting weight of the focal adjustments of each window of window (window) number that the check image that is used for carrying out focal adjustments is set, the size of this window, these a plurality of windows etc.
Then, the zoom control part makes zoom lens 3 go up at axial (directions X among the figure) by zoom drive portion 20 and moves, and zoom test section 19 is controlled the position of zoom lens 3 by the position of transducer 19a detection zoom lens 3 based on this detection architecture.
In addition, automatically focusing process portion 27 uses the following adjustment end value of storage in storage medium 18 to set automatic focusing: the metewand value of the original position of focus lens 6, focusing, corresponding to the shooting multiplying power or with the camera lens of the distance of the body image that is taken move and the position, corresponding to the zoom track of the camera lens shift action of zoom action, to the followability of the shift action of the body that is taken, corresponding to the gain of the picture signal of shutter speed, to the starting of the secondary light source 42 of the body irradiation light that is taken, with the adjustment end value of the track of the corresponding lens location of F value etc.
Specifically, the original position of focus lens 6 and predetermined position and the difference by transducer 15a and test section 15 detected positions are stored in the storage medium 18.In addition, the original position of zoom lens 3 and predetermined position and the difference by transducer 19a and test section 19 detected positions are stored in the storage medium 18.
In addition, shown in Fig. 4 (a), be stored in the storage medium 18 based on the position (allowed band R) of the focus lens 6 of zoom action.In addition, in Fig. 4 (a), the original position (HP) of expression focus lens 6 in the longitudinal axis, the allowed band R of the position of focus lens 6 is associated with the original position HP of focus lens 6.
In addition, shown in Fig. 4 (b), be stored in the storage medium 18 based on the shooting multiplying power with the position of the zoom lens 3 of the distance of the body that is taken and the position of focus lens 6.
In addition, shown in Fig. 4 (c), the threshold value of the gain of the picture signal in the variable gain amplifier 11 and AF evaluation of estimate is stored in (the so-called followability that moves to the body that is taken is stored in the storage medium 18) in the storage medium 18 by being mapped.
In addition, the position of the metewand value of focusing and focus lens 6 is stored in the storage medium 18 accordingly.
In addition, shown in Fig. 4 (d), corresponding to shutter speed, the gain of the picture signal in the variable gain amplifier 11 is stored in the storage medium 18.
In addition, shown in Fig. 4 (e), set starting accordingly with the f-number (SV) of aperture 4, and be stored in the storage medium 18 secondary light source of the body irradiation light that is taken.
In addition, shown in Fig. 4 (f), the track A~D and the F value of the position of zoom lens 3 and focus lens 6 are stored in the storage medium 18 accordingly.
Then, as shown in Figure 2, white balance handling part 28 is cooperated with color reproduction coefficient settings portion 30, and correcting digital image signal C is so that white looks like white.In other words, white balance handling part 28 is adjusted the signal level of RGB, so that R=G=B having taken being taken during body of netrual colour.
Color reproduction coefficient settings portion 30 comprises piece accumulated unit 30a, light source estimation unit 30b, color reproduction coefficient calculation unit 30c, reference light source selected cell 30d, reference light source data storage cell 30e etc.
Piece accumulated unit 30a will be divided into a plurality of from the effective pixel area that camera module 1 provides, each color of all kinds according to the RGB of data image signal C adds up computing, obtain ∑ R, ∑ G, ∑ B, and be sent to light source estimation unit 30b.At this moment, using the complementary color filter to replace under the situation of RGB colour filter to imaging apparatus 8, the color signal that also color signal of CMYG can be transformed to RGB is obtained ∑ R, ∑ G, ∑ B.
Light source estimation unit 30b is at each piece, to be transformed to the XYZ signal from ∑ R, ∑ G, the ∑ B of piece arithmetic element 30a input by the XYZ transformation matrix computing that constitutes by triplex row three row, and obtain the xy chromaticity coordinate in the formula with the XYZ signal substitution x=X/ (X+Y+Z), the y=Y/ (X+Y+Z) that obtain, and the RGB color signal is transformed to the xy chromaticity coordinate in two-dimensional space.
At this moment, the chromaticity coordinate of using measuring instrument such as color colorimeter to survey for the value of the matrix coefficient of will be in the computing of XYZ transformation matrix employed triplex row three row and the RGB color signal that is provided by camera module during body that is taken of having taken the netrual colour under the reference light source with to the body that is taken of netrual colour is mapped, and in advance camera module 1 is installed to the matrix coefficient that calculates employed triplex row three row in the computing of XYZ transformation matrix on the electronic equipment of regulation, and be stored in the storage medium 18.
In addition, the xy chromaticity coordinate that light source estimation unit 30b will calculate at each piece and the light source mapping graph of regulation are mapped, judge that the xy chromaticity coordinate is whether in light source is selected the zone, select the xy chromaticity coordinate in the zone to add up phase adduction calculating mean value light source, output to reference light source selected cell 30d and color reproduction coefficient calculation unit 30c.
Reference light source selected cell 30d is with reference to the reference light source data storage cell 30e that has preestablished and stored the coefficient that the reference light source computing uses, and 3 interpolation reference coordinate of usefulness is calculated in the interpolation of obtaining the light source estimated coordinates.
In reference light source data storage cell 30e, stored the corresponding xy chromaticity coordinate of a plurality of and a plurality of reference light sources, white balance gains COEFFICIENT K r, Kg, Kb, be listed as the color reproduction matrix that constitutes by triplex row three.
In addition, before being installed to this camera module 1 on the electronic equipment main body 21, be installed in advance on the electronic equipment of regulation, according to the actual photographed data of using this camera module 1 under a plurality of reference light sources, to take, adjust for the color reproduction matrix that is stored in the xy chromaticity coordinate corresponding among the reference light source data storage cell 30e, white balance gains Kr, Kg, Kb, constitute by triplex row three row, and be stored in the storage medium 18 with a plurality of reference light sources.
Color reproduction coefficient calculation unit 30c will be associated with light source estimated coordinates at the interpolation coordinate to the white balance gains coefficient of each interpolation setting coordinate and color reproduction matrix coefficient, set white balance gains coefficient corresponding and color reproduction matrix (Fig. 5 (d)), and output to white balance handling part 28 and the CC matrix 29b of portion with the light source estimated coordinates.
In addition, for coefficient of white balance gains coefficient in the interpolation coordinate and color reproduction matrix etc., before being installed to this camera module 1 on the electronic equipment main body 21, attach it in advance on the electronic equipment of regulation, in order to reduce error,, it is stored in the storage medium 18 and being adjusted end value.
Then, the white balance gains coefficient is imported into white balance handling part 28 from color reproduction coefficient calculation unit 30c, and the color reproduction matrix coefficient of triplex row three row is imported into the CC matrix 29b of portion.
Then, white balance handling part 28 uses the white balance gains coefficients that the level from the RGB data image signal of exposure-processed portion 26 outputs is adjusted, and is input to color reproduction handling part 29.
Then, color reproduction handling part 29 is made of the 29a of color interpolation portion, the CC matrix 29b of portion, image quality correction unit 29c, the 29d of gamma transformation portion.
As mentioned above, imaging apparatus 8 is corresponding with pixel, arrange the colour filter that constitutes and have by the Bayer (Bayer) of R (red) G (green) B (indigo plant) three looks, only has information from the signal of each pixel output by a color behind the colour filter of all kinds, so carry out interpolation operation by signal to each pixel at the 29a of color interpolation portion, thereby determine the component of RGB three looks of each pixel, and generate view data.
At this moment, before being installed to this camera module 1 on the electronic equipment main body 21, attach it in advance on the electronic equipment of regulation, and the dichroism of mensuration colour filter, corresponding with this measurement result with the picture element signal of the pixel periphery of wanting interpolation, in recording medium 18, stored the color interpolation table that each pixel of wanting interpolation is generated the color component of three looks.In addition, the color component of each the color of pixel component after the interpolation with the body that is taken compared, and the color interpolation table is adjusted for both are mated.
The CC matrix 29b of portion uses the color reproduction matrix coefficient that is calculated by color reproduction coefficient calculation unit 30c, and will proofread and correct by the RGB data image signal of white balance handling part 28 inputs is the signal level of regulation.Specifically, carry out the computing of the matrix form shown in Fig. 5 (d), the data image signal of RGB is transformed to the picture signal of R ', G ', B '.
Then, image quality correction unit 29c carries out the image quality correction based on the adjustment end value of the camera lens aberration of storage in storage medium 18.Specifically, for the camera lens aberration, as Fig. 5 (b) (c) shown in, with distorton aberration and chromatic aberration as the function of image height on the imaging surface and aberration and obtain.Then, each pixel is obtained this aberration characteristic, the corrected value that is used for eliminating this aberration is stored in storage medium 18 as adjusting end value.
In addition, because the variation of exposure or environment temperature for a long time, may in the output of each pixel, produce noise and damage image quality, so image quality correction unit 29c is at each pixel, based on the output level of pre-set threshold and picture element signal on every side suppresses the noise that comprises in each pixel in order to carry out noise to judge.
Specifically, shown in Fig. 6 (a), for the noise suppressed among the pixel Loo, obtain 8 pixels (Lmm, Lom, Lpm on every side, Lmo, Lpo, Lmp, Lop, the maximum of output valve Lpp) and minimum value, the value that obtains deduct pixel Loo from minimum value are that predetermined threshold value M is when above, the level of Loo is replaced into minimum value, on the other hand, the value that obtains deduct maximum from Loo is predetermined threshold value P when above, and the level of Loo is replaced into maximum.
At this moment, shown in Fig. 6 (b), in advance camera module 1 is installed on the electronic equipment of regulation, obtains threshold value M, P for the image quality that obtains stipulating, and be stored in the storage medium 18.
In addition, when generating coloured image in the color interpolation processing of carrying out data image signal C, false colour might take place and damage image quality owing to turning back of sampling, so image quality correction unit 29b carries out the correction of false colour.In other words, the transmitance of the colour filter in the imaging apparatus 8 is different for each color, the signal value difference that each color is saturated.Therefore, in the image of shooting, the signal value of each color is not simultaneously that its result may produce at hi-lite and add the original phenomenon that is called false colour in the non-existent color of this part but saturated successively.
Therefore, the appropriate value (the so-called end value of adjusting) that is associated with the inhibition of false colour in advance and obtains sample frequency, and be stored in the storage medium 18.
And then for example by the edge of detected image such as Laplacian (Laplacian) circuit, the corrected value that will proofread and correct near the signal level the edge for its border is strengthened (the so-called end value of adjusting) is stored in the storage medium 18.
In addition, because the data image signal C that exports from camera module 1 is the gray scale (for example, 2 with regulation 8=256 gray scales) data are so image quality correction unit 29c carries out from the greyscale transformation of the data image signal of the CC matrix 29b of portion output.
At this moment, being benchmark, the table of greyscale transformation is stored in the storage medium 18 the predetermined correct exposure amount of view data P.In addition, in advance camera module 1 is installed on the electronic equipment of regulation, the table of greyscale transformation is adjusted (the so-called end value of adjusting), so that the light and shade of view data P conforms to Benchmark brightness.
And then the 29d of gamma transformation portion will be mapped by the color display characteristic that image quality correction unit 29c has carried out the display of the data image signal of greyscale transformation and display image data P, carries out gamma transformation.At this moment, in advance camera module 1 is installed on the electronic equipment of regulation, obtains the gamma transformation coefficient for the image quality that obtains stipulating and be stored in the storage medium 18.
Then, color reproduction handling part 29 for example can change the gain (cHroma gain) of Cr, Cb according to the gray scale of brightness signal Y after the RGB image digital signal of the gamma transformation that will be through with is transformed to brightness Y, aberration Cb, Cr, suppresses and carry out colourity.That is, little at the little dash area of brightness Y by the ratio of gains setting that makes Cr, Cb, thus carrier chrominance signal Cr, the Cb of inhibition dash area.
And, in advance camera module 1 is installed on the electronic equipment of regulation, obtain the cHroma gain corresponding for the image quality that obtains stipulating, and the adjustment end value that suppresses as colourity is stored in the storage medium 18 with the gray scale of brightness Y.
In addition, have in the recording medium 18 when camera module 1 being installed on the camera body 2 via CPU 24 and respectively adjust the program that end value is input to camera body 21 sides described.
As above, according to camera module of putting down in writing among the embodiment 1 and electronic equipment 100, because camera module 1 is installed on the electronic equipment of regulation in advance, and the storage medium 18 that possesses the adjustment end value of the corresponding data image signal C of adjusted view data P in the image processing part of having stored with electronic equipment 100 22, so after being installed to camera module 1 on the electronic equipment main body 21, can omit the step of the adjusted value of obtaining the manufacture deviation that is used to proofread and correct camera module 1, and can mate accurately with the image processing part 22 of electronic equipment main body 21, and obtain high-quality, high-precision image, and can adapt to the high performance of electronic equipment 100, high precision int.
In addition, according to camera module of putting down in writing among the embodiment 1 and electronic equipment 100, owing in recording medium 18, have the exposure that the light quantity that is used for subtend imaging apparatus 8 guiding is adjusted, be used for the automatic focusing of automatic focusing, be used to adjust the white balance of the white of view data P, be used to color reproduction that view data P is conformed to the tone of regulation, the adjustment end value of the action of photoflash lamp 41 etc., so after being installed to camera module 1 on the camera body 21, can omit and obtain exposure, automatically focusing, white balance, color reproduction, the step of the adjusted value of the action of photoflash lamp 41 etc., convenience can be improved, high-quality and high-precision image can be obtained simultaneously.
In addition, according to camera module of putting down in writing among the embodiment 1 and electronic equipment 100, owing in storage medium 18, having stored and be used for proofreading and correct by camera lens 2 as adjusting end value, 3,5, the data of 6 aberrations that cause, be used to reduce the data of the sensitivity inequality between the adjacent same color pixel, be used for data that effective pixel area is adjusted, be used for data that the dark current of imaging apparatus 8 is setovered, be carried out adjust in case with the data of the brightness coupling of regulation, the corresponding gamma transformation value of color display characteristic with the display of display image, the data corresponding etc. with a plurality of shooting scenes, so after being installed to camera module 1 on the electronic equipment main body 21, can omit the step of obtaining these adjusted values, can improve convenience and obtain high-quality image quality simultaneously.
More than, one embodiment of the present of invention have been described, but the present invention is not limited to described embodiment, can take variety of way.
For example, in storage medium 18, also can store adjustment end value Q at each shooting scenes such as indoor and outdoors.
In addition, also can in storage medium, store the pixel region that is used for imaging apparatus 8 and form the adjustment end value that shadow is handled (shading).Thus, can further reduce the distortion of light and shade accurately, obtain high-quality image quality.
In addition, also can before being installed to this camera module 1 on the camera body 21, attach it in advance on the electronic equipment of regulation, measure its variation in advance for data image signal C, and adjustment end value that will be corresponding with each environment temperature is stored in the storage medium 18 with respect to variations in temperature from camera module 1 output.Thus, can obtain the good image quality of temperature characterisitic.
In addition, also can before being installed to this camera module 1 on the camera body 21, attach it in advance on the electronic equipment of regulation, for the response for the command signal of CPU 24 such as transducer 14,15a, 19a, measure the error of response in advance, and in storage medium 18, store the adjustment end value that is used to eliminate this error.Thus, can further drive zoom lens 3, focus lens 6, IRIS 4 etc. accurately.
In addition, also can have mark (flag) in the camera module 1, so that can select respectively to adjust the having or not of use of end value according to operator's needs.In addition, also can have the limiting unit when adjusting end value and output to camera body 21 in the camera module 1, respectively adjust end value in the storage medium 18 so that only have specific operator (or specific camera body) to use to be stored in.

Claims (22)

1. camera module, it can freely load and unload on the electronic equipment main body, and this camera module comprises:
Camera lens, its guiding body image that is taken;
Imaging apparatus, it is set side by side with a plurality of components of photo-electric conversion, the body image that is taken by described camera lens guiding is carried out light-to-current inversion, thereby export the picture signal of multiple color;
Variable gain amplifier, it proofreaies and correct the gain of described picture signal;
The A/D converter, it will carry out the A/D conversion from the picture signal of described variable gain amplifier output, thus the output digital image signal; And
Storage medium,
It is characterized in that in described electronic equipment main body, having described data image signal is adjusted into the image processing part of exporting after the view data of regulation,
Before this camera module being installed on the described electronic equipment main body, attach it on the electronic equipment of regulation storage and the view data of described adjusted regulation adjustment end value corresponding, described data image signal in described storage medium in advance.
2. camera module as claimed in claim 1 is characterized in that,
Described adjustment end value is to the data adjusted of any action at least in following each action: be used to adjust exposure to the light quantity of described imaging apparatus guiding, be used for the automatic focusing of automatic focusing, the white balance that is used to adjust the white of described view data, the color reproduction that is used to described view data is conformed to the tone of regulation, and the shutter interlock photoflash lamp action etc. of shining the body image that is taken.
3. camera module as claimed in claim 1 is characterized in that,
Comprise in the described adjustment end value adjustment to the exposure of the light quantity of described imaging apparatus guiding, be used for automatic focusing automatic focusing, be used to adjust the white balance of the white of described view data, the values that are used to make color reproduction that described view data conforms to the tone of regulation etc. all to move.
4. camera module as claimed in claim 1 is characterized in that,
Described adjustment end value is the data that are used to proofread and correct the aberration that is caused by described lens.
5. camera module as claimed in claim 1 is characterized in that,
Described adjustment end value is to reduce the data of the sensitivity inequality between the adjacent same color pixel.
6. camera module as claimed in claim 1 is characterized in that,
Described adjustment end value is the data of adjusting by the effective pixel area in the pixel region of described imaging apparatus output.
7. camera module as claimed in claim 1 is characterized in that,
Described adjustment end value is the data that the dark current of described imaging apparatus is setovered.
8. camera module as claimed in claim 2 is characterized in that,
The adjustment end value of described exposure is the data that the either party at least in exposure sensitivity, aperture, the shutter speed etc. is adjusted.
9. camera module as claimed in claim 2 is characterized in that,
The adjustment end value of described automatic focusing is the original position to described camera lens, the fiducial value that focusing is estimated, with the shooting multiplying power or with the mobile and position of the corresponding described camera lens of distance of the described body image that is taken, the zoom track that the described camera lens corresponding with the zoom action moves, the followability that moves for the described body that is taken, the gain of the described picture signal corresponding with shutter speed, to the described starting of body irradiation light that be taken with the secondary light source of auxiliary focusing, the data that either party at least in the track of the described lens location corresponding with the F value etc. adjusts.
10. as claim 2 or the described camera module of claim 9, it is characterized in that,
The adjustment end value of described automatic focusing is to be used for carrying out data focal adjustments, that adjust to the size of the window number set at check image, this window, to the either party at least in the weighting weights of the focal adjustments of each window of these a plurality of windows etc. at each the shooting multiplying power in a plurality of shooting multiplying powers.
11. camera module as claimed in claim 2 is characterized in that,
The adjustment end value of described white balance is to estimating based on the light source colour from the picture signal of described imaging apparatus output, estimating that with described light source colour corresponding white balance gains, the image signal transformation that will export by described capturing element be the data that the either party at least the colour switching matrix coefficient etc. of color data of reference colour of red, green, blue adjusts.
12. camera module as claimed in claim 1 is characterized in that,
Possesses the image quality adjustment part in the described electronic equipment main body, this image quality adjustment part is based on described data image signal, carry out color interpolation, false colour inhibition, noise suppressed, edge enhancing, colourity inhibition etc., described color interpolation is the processing that each pixel from described imaging apparatus output is generated multiple color component
Be stored in adjustment end value in the described storage medium and be to the either party at least in described color interpolation, false colour inhibition, noise suppressed, edge enhancing, the colourity inhibition etc. adjust and data.
13. camera module as claimed in claim 1 is characterized in that,
Described adjustment end value is the data of the brightness coupling that is adjusted to and stipulates.
14. camera module as claimed in claim 1 is characterized in that,
Described adjustment end value is the corresponding gamma transformation value of color display characteristic with the display that shows described view data.
15. camera module as claimed in claim 2 is characterized in that,
The adjustment end value of described photoflash lamp action is the data that the fluorescent lifetime of this photoflash lamp corresponding with guide number is adjusted.
16. as claim 1 any one described camera module, it is characterized in that to claim 15,
Described adjustment end value corresponds respectively to predefined a plurality of shooting scene.
17. an electronic equipment is characterized in that,
Described electronic equipment comprises image processing part, this image processing part will be exported after will being transformed to the view data of regulation by the data image signal of camera module input, each described camera module that described camera module is a claim 1 to the claim 16.
18. the manufacture method of a camera module, described camera module can freely load and unload on the electronic equipment main body, and described camera module has used: camera lens, its guiding body image that is taken; Image unit, it carries out light-to-current inversion to the body image that is taken by described camera lens guiding, and exports the picture signal of multiple color; The variable gain amplifying unit, it proofreaies and correct the gain of described picture signal; The A/D converter unit, it will carry out the A/D conversion from the picture signal of described variable gain amplifying unit output, and the output digital image signal; And memory cell, it is characterized in that,
In described electronic equipment main body, use described digital signal be adjusted into the graphics processing unit of exporting after the view data of regulation,
Before this camera module being installed on the described electronic equipment main body, attach it on the electronic equipment of regulation storage and the view data of described adjusted regulation adjustment end value corresponding, described data image signal in described memory cell in advance.
19. the manufacture method of camera module as claimed in claim 18 is characterized in that,
Described adjustment end value is to the data adjusted of any action at least in following each action: be used to adjust exposure to the light quantity of described imaging apparatus guiding, be used for the automatic focusing of automatic focusing, the white balance that is used to adjust the white of described view data, the color reproduction that is used to described view data is conformed to the tone of regulation, photoflash lamp action etc.
20. the manufacture method of camera module as claimed in claim 18 is characterized in that,
Comprise the exposure, the automatic focusing that is used for automatic focusing that are used to adjust to the light quantity of described imaging apparatus guiding in the described adjustment end value, be used to adjust the white balance of the white of described view data, the numerical value that are used to make color reproduction that described view data conforms to the tone of regulation etc. all to move.
21. the manufacture method as any one described camera module of claim 18 to 20 is characterized in that,
Described adjustment end value corresponds respectively to predefined a plurality of shooting scene.
To be adjusted into the graphics processing unit of exporting after the view data of regulation by the data image signal of camera module input 22. the manufacture method of an electronic equipment, described electronic equipment are used, and can freely load and unload described camera module, it is characterized in that,
The manufacture method of described camera module is claim 18 any one described manufacture method to claim 21.
CNA2008100015266A 2007-01-05 2008-01-04 Camera module, electronic apparatus having the same and method of manufacturing the same Pending CN101217621A (en)

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