CN102244722B - Image capture module and image capture method capable of avoiding shutter delay - Google Patents

Image capture module and image capture method capable of avoiding shutter delay Download PDF

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CN102244722B
CN102244722B CN 201010174399 CN201010174399A CN102244722B CN 102244722 B CN102244722 B CN 102244722B CN 201010174399 CN201010174399 CN 201010174399 CN 201010174399 A CN201010174399 A CN 201010174399A CN 102244722 B CN102244722 B CN 102244722B
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image
previewing
lattice
output
crossfire
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CN102244722A (en
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彭明辉
郑汉铭
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Xingchen Technology Co.,Ltd.
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Alpha Imaging Technology Corp
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Abstract

The invention provides an image capture module and an image capture method. The image capture module mainly comprises an image signal processing unit, a previewing interface module and an image temporary storage module, wherein, the image signal processing unit processes received image data stream so as to generate previewing image stream and output image stream and then respectively sends the previewing image stream and the output image stream to the previewing interface module for output and the image temporary storage module for temporary storage; the previewing image stream comprises a first previewing image visual grid; the output image stream comprises a first output image visual grid corresponding to the first previewing image visual grid; and when an image capture command is generated after the previewing interface module receives and outputs the first previewing image visual grid, the image temporary storage module outputs the first output image visual grid from a buffer memory unit.

Description

Avoid image acquisition module and the image acquisition method of fast gate delay
Technical field
The invention relates to the image acquisition method of a kind of image acquisition module and use thereof; Particularly, the invention relates to a kind of image acquisition module of fast gate delay and image acquisition method of use thereof avoided.
Background technology
There is significant growth in the range of application of digital image and field in recent years, the technology level also constantly promotes thereupon.For satisfying the user demand of user on digital image, the acquisition function of digital image all is provided on digital camera and other the various electronic installations, photograph in various occasion and opportunity with convenient.
Figure 1A is depicted as the schematic diagram of traditional digital image acquisition module.Traditional digital image acquisition module comprises image sensor 20, image processor 10, previewing interface device 30 and previewing display 60.When the previewing pattern before photography, image sensor 20 is converted into signal 21 with the light that receives and is sent to image processor 10.Image processor 10 is delivered to the previewing display 60 of previewing interface device 30 and its rear end connection to produce the previewing image after signal 21 is treated as signal of video signal 11.When the user sees the image that desire is taken by previewing display 60 in the previewing pattern, namely press shutter entering the image capture pattern, and self imaging processor 10 comes pick-up image.
As shown in Figure 1B, comprise a plurality of first, second, third images of arranging according to sequential in the signal of video signal 11 and look lattice 61,63,65.First, second, third image is looked lattice 61,63,65 and is image sensor 20 difference picked image in the continuous time.Look lattice 61 after previewing interface device 30 is sent to previewing display 60 fully when first image, previewing display 60 just can be looked lattice 61 with first image and show as the previewing image.The signal of video signal that outwards exported by image processor 10 this moment is that second image is looked lattice 63.In other words, when the user sees that first image of previewing is looked lattice 61 and when pressing shutter, can self imaging processor 10 picked image be not that first image of having been exported is fully looked lattice 61.Because the image of previewing is different with the image output of acquisition, therefore caused so-called shutter delay phenomenon.
In addition; look the lattice renewal frequency when promoting the previewing pattern; image sensor 20 can be exported lower but the signal of video signal that renewal frequency is higher of resolution usually when the previewing pattern, and is treated to through image processor 10 that first image is looked lattice 61 and second image is looked lattice 63.When the user presses soon behind the door, 20 of image sensors can be switched and change the complete resolution of output but the lower signal of video signal of renewal frequency, and for example the 3rd image is looked lattice 65.Yet image sensor 20 also needs elapsed time in the handoff procedure of this output specification, and then makes second image look lattice 63 and the 3rd image to look the empty window time that forms signal between the lattice 65.This empty window time will more be increased the weight of aforesaid shutter delay phenomenon, make the image of user's previewing and actual acquisition to image output between have bigger time and image drop.
Summary of the invention
The object of the present invention is to provide the image acquisition method of a kind of image acquisition module and use thereof, to solve the shutter delay issue.
Another object of the present invention is to provide the image acquisition method of a kind of image acquisition module and use thereof, the image the when image output that the user is captured is pressed shutter with previewing is identical.
Another object of the present invention is to provide the image acquisition method of a kind of image acquisition module and use thereof, can integrate with back-end system and other application apparatus easily.
Image acquisition module mainly comprises the temporary module of signal of video signal processing unit, previewing interface module and image.Image acquisition module is to be connected in image source, and receives the image data crossfire that image source provides.Image source is to receive extraneous light and be converted to electronic signal and produce the image data crossfire, and signal of video signal processing unit then self imaging source receives the image data crossfire.The signal of video signal processing unit is handled the image data crossfire that receives, to produce previewing video streaming and image output crossfire.The previewing video streaming is sent in the previewing interface module, and outwards output forms the previewing image again.It is temporary that the image output crossfire then is transferred into the temporary module of image; In other words, previewing video streaming and image output crossfire are to form two independently signal paths.
Include the first previewing image in the previewing video streaming and look lattice; Include then in the image output crossfire that first image output is looked lattice and to look lattice corresponding with the first previewing image.When in the previewing pattern, when the first previewing image was looked lattice and received and export by the previewing interface module, first image output was looked lattice are also received by the temporary module of image synchronously and is temporary.After the complete output first previewing image of previewing interface module was looked lattice, the first previewing image was looked lattice and just can be shown as watching for the user for the previewing image, and this moment, first image output was looked lattice also by the temporary module complete reception of institute of image and temporary.
When the user pressed shutter or start other trigger equipments with the order of generation image capture, first image output that system is namely kept in according to image capture order output was looked lattice as the image output of acquisition.Because it is to look lattice corresponding to first image output that the first previewing image is looked lattice, both shown images are identical naturally.By this design, can avoid the delay of shutter or image processing, and produce user finding image and actual drop that obtains between image output when pressing shutter thereupon.
Description of drawings
Figure 1A is the schematic diagram of traditional image acquisition module;
Figure 1B is the schematic diagram that traditional image acquisition module produces signal of video signal;
Fig. 2 is the embodiment schematic diagram of image acquisition module;
Fig. 3 is the embodiment schematic diagram of the inner signal of video signal of image acquisition module;
Fig. 4 is another embodiment schematic diagram of image acquisition module;
Fig. 5 is the embodiment schematic diagram that comprises delay time T;
Fig. 6 is the embodiment schematic diagram that comprises identiflication number;
Fig. 7 is the embodiment schematic diagram of buffer memory unit;
Fig. 8 A is the embodiment schematic diagram that comprises the image capture ready mode;
Fig. 8 B is another embodiment schematic diagram that comprises the image capture ready mode;
Fig. 9 is the embodiment flow chart of image acquisition method;
Figure 10 is another embodiment flow chart of image acquisition method.
The main element symbol description
100 image acquisition modules
200 image sources
210 image data crossfires
300 signal of video signal processing units
310 previewing video streamings
311 first previewing images are looked lattice
312 second previewing images are looked lattice
313 the 3rd previewing images are looked lattice
330 image output crossfires
331 first image outputs are looked lattice
332 second image outputs are looked lattice
333 the 3rd image outputs are looked lattice
411 first identiflication numbers
500 previewing interface module
600 fundamental frequency processor/displays
700 images are kept in module
710 buffer memory unit
711,712,719 working areas
730 image compression units
800 image capture orders
810 image capture warning orders
910 CPU
930 shutters
931 first sections triggerings
932 second sections triggerings
Embodiment
The present invention provides the image acquisition method of a kind of image acquisition module and use thereof.With preferred embodiment, image acquisition module of the present invention and image acquisition method are to be applied in the digital camera; Yet in different embodiment, image acquisition module of the present invention and image acquisition method need also to can be applicable in other electronic installations of IPF, for example mobile phone, personal digital assistant, Satellite Navigation Set, the electronic game machine of hand held etc.
As shown in Figure 2, image acquisition module 100 mainly comprises the temporary module 700 of signal of video signal processing unit 300, previewing interface module 500 and image.Image acquisition module 100 is to be connected in image source 200, and receives the image data crossfire 210 that image source 200 provides.Image source 200 preferable various image sensor, for example charge coupled cell (CCD), the CMOS (Complementary Metal Oxide Semiconductor) (CMOS) etc. of comprising.Image source 200 is to receive extraneous light and be converted to electronic signal and produce image data crossfire 210, and signal of video signal processing unit 300 then self imaging source 200 receives image data crossfires 210.In this preferred embodiment, the image data crossfire 210 that image source 200 produces is according to fixed time sequence and with fixedly resolution output.So in different embodiment, image source 200 produces the sequential of image data crossfires 210/look the lattice frequency or resolution also can suitably be switched to reach extra effect.
As shown in Figure 2, the image data crossfire 210 of 300 pairs of receptions of signal of video signal processing unit is handled, to produce previewing video streaming 310 and image output crossfire 330.Previewing video streaming 310 is preferably by 300 pairs of image data crossfires of signal of video signal processing unit 210 and is undertaken forming after resolution reduction or adjustment data formats etc. are handled.Preferable RGB or the yuv format of can be of the data formats of previewing video streaming 310 is to meet the usefulness of follow-up previewing or output.In addition, signal of video signal processing unit 300 also can carry out the noise filtering or other handle to form previewing video streaming 310 to image data crossfire 210.
Previewing video streaming 310 is sent in the previewing interface module 500.In certain products design, previewing interface module 500 can be connected in the fundamental frequency processor of system on demand, is connected to afterwards on the application apparatus such as display again; Yet in different embodiment, previewing interface module 500 also is designed to be directly connected on the application apparatus such as display, so that the previewing image to be provided.As shown in Figure 2, previewing interface module 500 namely outwards exports on fundamental frequency processor/display 600 application apparatus such as grade of system after receiving previewing video streaming 310.After fundamental frequency processor/display 600 a certain in complete reception previewing video streaming 310 looked lattice, the image that namely this can be looked lattice showed that becoming the previewing image watches for the user.
As shown in Figure 2, image output crossfire 330 is preferably and adjusts data formats or noise filtering etc. by 300 pairs of image data crossfires 210 of signal of video signal processing unit and handle the back and form.Preferable RGB, YUV or the RAW form of can be of the data formats of image output crossfire 330 is to meet the usefulness of subsequent compression or output.In preferred embodiment, signal of video signal processing unit 300 can't reduce resolution to image data crossfire 210 and handle to form image output crossfire 330; So in different embodiment, the mode that image output crossfire 330 can also reduce resolution forms, to cooperate different system's output demands.
Image output crossfire 330 after the generation is to be transferred into the temporary module 700 of image; In other words, previewing video streaming 310 and image output crossfire 330 are to form two independently signal paths, and are transferred into different places and carry out subsequent treatment.Have at least one buffer memory unit 710 in the temporary module 700 of image, image output crossfire 330 then is temporary in the buffer memory unit 710.In preferred embodiment shown in Figure 2, include image compression unit 730 in the temporary module 700 of image and be arranged at before the buffer memory unit 710.Image output crossfire 330 is temporary via entering in the buffer memory unit 710 after 730 compressions of image compression unit again.In preferred embodiment, image compression unit 730 is to be JPEG image compression engine, and the lattice of looking in the image output crossfire 330 are distinguished boil down to JPEG image format; Yet in different embodiment, image compression unit 730 also can be the image compression engine of different-format.
As shown in Figure 3, include in the previewing video streaming 310 that the first previewing image is looked lattice 311, lattice 312 looked by the second previewing image and the 3rd previewing image is looked lattice 313; Include in the image output crossfire 330 that first image output is looked lattice 331, second image output looks lattice 332 and the 3rd image output is looked lattice 333.Wherein the first previewing image is looked lattice 311, the second previewing image and is looked lattice 312 and the 3rd previewing image and look lattice 313 and correspond respectively to that first image output is looked lattice 331, second image output looks lattice 332 and the 3rd image output is looked lattice 333; In other words, the first previewing image is looked lattice 311 and first image output to look lattice 331 is that same lattice of looking in the raw video data stream 210 that is provided by image source 200 are produced.Follow-up other previewing and image output looked lattice also the rest may be inferred.Yet in preferred embodiment, need cooperate the pixel specification of display to adjust resolution usually because the previewing image is looked lattice, therefore the first previewing image image analytic degree of looking lattice 311 is preferably the image analytic degree of looking lattice 331 less than first image output.
In preferred embodiment shown in Figure 3, when in the previewing pattern, when the first previewing image was looked lattice 311 and received and export by previewing interface module 500, first image output was looked lattice 331 are also received by the temporary module 700 of image synchronously and is temporary.When the previewing interface module 500 complete output first previewing images are looked lattice 311 to fundamental frequency processor/display 600, the first previewing image is looked lattice 311 and just can be shown as watching for the user for the previewing image.In other words, look lattice 311 and press shutter or start other trigger equipments and when entering the image capture pattern when the user sees the first previewing image, the first previewing image is looked lattice 311 by 500 complete outputs of previewing interface module, and first image output is looked lattice 331 also by temporary 700 complete receptions of module of image and temporary.
Can produce image capture order 800 and enter the image capture pattern owing to the user presses shutter or starts other trigger equipments, this moment, lattice 331 were namely looked as the image output of acquisition according to first image output that image capture order 800 outputs are kept in by system.In addition, first image output is looked lattice 331 also can be transferred into previewing image module 500 with outside output, supplies user's affirmation or inspects the image output of acquisition.Because it is to look lattice 331 corresponding to first image output that the first previewing image is looked lattice 311; That is both presentation content are the same lattice of looking that come from image data crossfire 210, and both shown images are identical naturally.By this design, can avoid the delay of shutter or image processing, and produce user finding image and actual drop that obtains between image output when pressing shutter thereupon.
In addition, in this preferred embodiment, when producing image capture order 800 with after entering the image capture pattern, the temporary module 700 of previewing interface module 500 and image can stop to receive previewing video streaming 310 and image output crossfire 330 respectively, to reduce power consumption.Yet when leaving the image capture pattern and entering the previewing pattern again, the temporary module 700 of previewing interface module 500 and image namely begins to receive previewing video streaming 310 and image output crossfire 330 respectively.
In the embodiment shown in fig. 4, image acquisition module 100 and include CPU 910 and shutter 930.Shutter 930 is the operation generation image capture orders 800 according to the user, and is sent to CPU 910.In different embodiment, shutter 930 also can be made of contact panel or other trigger equipments.When CPU 910 received image capture order 800, namely according to the generation time point of image capture order 800, the first corresponding image output of access output was looked lattice 331 in buffer memory unit 710.
In the embodiment shown in fig. 5, the time point that system receives image capture order 800 be the second previewing image look lattice 312 by the process that previewing interface module 500 received and exported in, this moment, display 600 shown previewing images were to look lattice 311 for the first previewing image.Yet because delaying of causing on fundamental frequency processor/display 600 or other processing data, it is not that next that be right after after the first previewing image is looked lattice 311 looked lattice that the second previewing image is looked lattice 312.Accompany between the two one or several other previewing images look lattice 315.For correct output is looked lattice 311 corresponding image with user's previewing finding first previewing image, CPU 910 is to judge the image output that access is correct according to default previewing delay time T.For example when image capture order 800 be created in the second previewing image look lattice 312 by the process that previewing interface module 500 received and exported in the time, first image output that CPU 910 namely is accessed in buffer memory unit 710 before the default delay time T is looked lattice 331 as image output.This pre-delay time T can learn in advance via test, and then predeterminable in CPU 910.
Yet in different embodiment, the first previewing image is looked lattice 311 and the second previewing image and is looked and also may not have other previewing images to look lattice between the lattice 312 to exist, that is does not cause on fundamental frequency processor/display 600 or other processing data and delay situation.This moment is if image capture order 800 is created in the second previewing image and looks lattice 312 by in the process that previewing interface module 500 received and exported, that is the first previewing image when looking lattice 311 and looking lattice for last of previewing interface module 500 outputs, first image output that CPU 910 also can directly access be right after before second image output is looked lattice 332 in buffer memory unit 710 is looked lattice 331 as image output.Wherein to look lattice 332 be to look lattice 312 corresponding to the second previewing image to second image output, and when the second previewing image is looked lattice 312 and is received and export by previewing interface module 500, second image output look lattice 332 be preferably be in by 730 compressions of image compression unit and by temporary to the process of buffer memory unit 710.
In the embodiment shown in fig. 6, each previewing image is looked lattice and is all had identiflication number.For example the first previewing image is looked lattice 311 and is namely had first identiflication number 411.Identiflication number is preferably to be included in and forms each previewing image and look in the Datagram of lattice, and can be 600 deciphers of fundamental frequency processor/display.Look lattice 311 when the first previewing image and be shown as the previewing picture by fundamental frequency processor/display 600, and when the user triggered shutter 930 with the order 800 of generation image capture, fundamental frequency processor/display 600 namely returned the first previewing image and looks first identiflication number 411 of lattice 311 to CPU 910.CPU 910 is according to first identiflication number of receiving 411, can be in buffer memory unit 710 first image output 331 of access correspondence as image output.
As previously mentioned, the previewing image that is shown as the previewing image is looked lattice and the previewing image that just receiving in previewing interface module 500 is looked compartment and differed and be decided to be close proximity, may accompany other previewing images between the two and look lattice.Therefore in the embodiment shown in fig. 7, buffer memory unit 710 can include a plurality of working areas 711,712, looks the corresponding a plurality of image outputs of lattice with the previewing image and looks lattice with temporary.As shown in Figure 7, first image output that comprises of image output crossfire 330 is looked lattice 331, second image output to look lattice 332 is to deposit in regular turn in the working area 711,712.After the working area 719 of most end was deposited in, the image output that produces of continuing was looked lattice and is namely returned from initial working area 711 to make carbon copies in regular turn and deposit in.
In the embodiment shown in Fig. 8 A, between previewing pattern and image capture pattern, more include the image capture ready mode; The startup of image capture ready mode is triggered by image capture warning order 810.In preferred embodiment, shutter device 930 is to have first section to trigger 931 and second sections triggerings 932.First section is triggered the 931 preferable trigger actions such as camera lens focusing or photometry that can be, and this trigger action can be reached by touching the focusing position on first section shutter or the click contact panel.Second section trigger 932 preferable then be the trigger action of pick-up image, for example the actual shutter of pressing shutter key or clicking on the contact panel illustrates.
Shown in Fig. 8 A, when the previewing pattern, first section triggering 931 is not activated as yet, only has this moment previewing video streaming 310 to be produced and be sent to previewing interface module 500 by signal of video signal processing unit 300; Image output crossfire 330 is not then produced and is sent to the temporary module 700 of image.When image capture warning order 810 produces, that is first section triggered 931 when being activated, the initial generation of signal of video signal processing unit 300 sides and transmit image output crossfire 330 to image and keep in module 700.Follow-up enter after the image capture pattern flow process then as described above, in this no longer repeat specification.By this design, can further reduce the consume of system's electric power when the previewing pattern, and reduce system resources consumption thus to improve usefulness.
In addition, in different embodiment, shown in Fig. 8 B, during previewing pattern before receiving image capture warning order 810, the changeable image source 200 of system provides resolution lower image data string 210, so that previewing video streaming 310 has higher image renewal frequency.When receiving image capture warning order 810 afterwards and entering follow-up image capture ready mode, image source 200 is then switched in system provides resolution higher image data string 210, and produces previewing video streaming 310 and image output crossfire 330 simultaneously according to the higher image data string 210 of resolution.
Figure 9 shows that the embodiment flow chart of image acquisition method of the present invention.As shown in Figure 9, step 1010 comprises according to image data crossfire generation previewing video streaming; Wherein, the previewing video streaming includes the first previewing image and looks lattice.The previewing video streaming is preferably by the image data crossfire and forms after resolution reduction, adjustment data formats or noise filtering etc. are handled, and preferable RGB or the yuv format of can be of its data formats is to meet the usefulness of follow-up previewing or output.
Step 1030 comprise transmit the previewing video streaming to the previewing interface module to export this previewing video streaming.The previewing interface module namely outwards exports on the application apparatus such as fundamental frequency processor/display of system after receiving the previewing video streaming.After fundamental frequency processor/display a certain in complete reception previewing video streaming looked lattice, the image that namely this can be looked lattice showed that becoming the previewing image watches for the user.
Step 1050 comprises according to image data crossfire generation image output crossfire; Wherein, this image output crossfire comprises first image output and looks lattice and look lattice corresponding to the first previewing image.In other words, the first previewing image is looked lattice and first image output and is looked lattice and produced by the same lattice of looking in the raw video data stream.The image output crossfire is preferably by the image data crossfire and forms after data formats or noise filtering etc. are handled through adjusting.Preferable RGB, YUV or the RAW form of can be of the data formats of image output crossfire is to meet the usefulness of subsequent compression or output.In preferred embodiment, can't reduce resolution to the image data crossfire and handle to form the image output crossfire; So in different embodiment, the mode that the image output crossfire can also reduce resolution forms, to cooperate different system's output demands.
Step 1070 comprises transmission image output crossfire to the temporary module of image, with the buffer memory unit of temporary image output crossfire in the temporary module of image.In other words, previewing video streaming and image output crossfire are to form two independently signal paths, and are transferred into different places and carry out subsequent treatment.In preferred embodiment, when the first previewing image was looked lattice and received and export by the previewing interface module, first image output was looked lattice are also received by the temporary module of image synchronously and is temporary.In addition, be the requirement that reduces the load of buffer memory unit or cooperate the image output form, the image output crossfire is kept in to the buffer memory unit after can compressing processing through the image compression unit earlier again.Aforementioned compressed format can be jpeg format, but is not limited to this.
Step 1090 comprises reception image capture order and exports first image output according to the image capture order in the buffer memory unit and look lattice, and wherein the image capture order is to result from the previewing interface module to receive and export the first previewing image and look after the lattice.As previously mentioned, after the complete output first previewing image of previewing interface module was looked lattice, the first previewing image was looked lattice and just can be shown as watching for the user for the previewing image.In other words, look lattice and press shutter or start other trigger equipments and when producing the image capture order, first image output is looked lattice also by the temporary module complete reception of institute of image and temporary when the user sees the first previewing image.First image output that this moment, system was namely kept in according to image capture order output is looked lattice as the image output of acquisition.Because it is to look lattice corresponding to first image output that the first previewing image is looked lattice, both presentation content are the same lattice of looking that come from the image data crossfire, and both shown images are identical naturally.By this design, can avoid the delay of shutter or image processing, and produce user finding image and actual drop that obtains between image output when pressing shutter thereupon.
In the embodiment shown in fig. 10, the image output crossfire produces step 1050 and comprises step 1051, keeps in module according to the initial generation image output of image capture warning order crossfire to image.The image capture warning order is preferably the trigger action that is produced by first section shutter in the two-part shutter or other trigger equipments and triggers simultaneously, and aforesaid trigger action is preferably the usefulness for actions such as the focusing of control camera lens or photometries.Owing to before system does not receive the image capture warning order, not so produce the image output crossfire, and only need produce the previewing video streaming, therefore this embodiment can further reduce the consume of system's electric power when the previewing pattern, and reduces system resources consumption thus to improve usefulness.
The present invention is described by above-mentioned related embodiment, yet above-described embodiment is only for implementing example of the present invention.Must be pointed out that the embodiment that has disclosed does not limit the scope of the invention.On the contrary, being contained in the modification of the spirit of claims and scope and equalization arranges and all is contained in the scope of the present invention.

Claims (20)

1. an image acquisition module supplies pick-up image in the image data crossfire that an image source provides, and this image acquisition module comprises:
One signal of video signal processing unit is to receive this image data crossfire, and produces a previewing video streaming and an image output crossfire respectively according to this image data crossfire; Wherein, this previewing video streaming comprises one first previewing image and looks lattice; This image output crossfire comprises one first image output and looks lattice to looking lattice by the first previewing image;
One previewing interface module, this signal of video signal processing unit receives and exports this previewing video streaming certainly; And
One image is kept in module, has at least one buffer memory unit; The temporary module of this image receives this image output crossfire and is temporary in this buffer memory unit from this signal of video signal processing unit;
Wherein, when an image capture order result from this previewing interface module receive and export this first previewing image look lattice after the time, the temporary module of this image is exported this first image output and is looked lattice in this buffer memory unit.
2. image acquisition module as claimed in claim 1, further comprise a CPU signal and connect the temporary module of this image, this CPU is to receive this image capture order, and looks lattice according to this image capture order from this first image output of this buffer memory cell access output.
3. image acquisition module as claimed in claim 2, wherein this previewing video streaming comprises and is positioned at the one second previewing image that this first previewing image looks after the lattice and looks lattice; The time point that this CPU receives this image capture order is to receive and export this second previewing image and look in the process of lattice in this previewing interface module, and this CPU determines this first image output of access to look lattice according to this time point and a default previewing delay time.
4. image acquisition module as claimed in claim 2, wherein this first previewing image is looked lattice and is had an identiflication number, and this CPU determines to look lattice from this first image output of this buffer memory cell access according to this identiflication number.
5. image acquisition module as claimed in claim 1, wherein this previewing interface module receives and exports that this first previewing image is looked the sequential of lattice and the temporary module of this image receives and temporary this first image output is looked lattice sequential is to carry out synchronously.
6. image acquisition module as claimed in claim 1, wherein to look the image analytic degree that the image analytic degree of lattice looks lattice than this first image output be little to this first previewing image.
7. image acquisition module as claimed in claim 1, wherein the temporary module of this image comprises an image compression unit and is arranged at before this buffer memory unit, and this image output crossfire is to be temporary in this buffer memory unit after this image compression unit is handled.
8. image acquisition module as claimed in claim 1, wherein this buffer memory unit comprises a plurality of working areas, and it is to deposit this plural number working area in regular turn in that the plural image output that this image output crossfire comprises is looked lattice; After this working area of most end was deposited in, this image output that continues was looked lattice and is namely returned to make carbon copies in regular turn from this initial working area and deposit in.
9. image acquisition module as claimed in claim 1, wherein in this buffer memory unit this first image output of output to look lattice be to be sent to this previewing interface module with outside output.
10. image acquisition module as claimed in claim 1, wherein this signal of video signal processing unit according to this image output crossfire of the initial output of an image capture warning order to the temporary module of this image.
11. image acquisition module as claimed in claim 10 further comprises a shutter device and a CPU, this CPU connects this signal of video signal processing unit and the temporary module of this image respectively; Wherein this shutter device has one first section triggering and one second section triggering; This this image capture warning order of first section triggering for generating, and this this image capture order of second section triggering for generating.
12. image acquisition module as claimed in claim 1, wherein this first previewing image is looked lattice and is looked lattice for last of this previewing interface module output.
13. an image acquisition method, for pick-up image in the image data crossfire that an image source provides, this image acquisition method comprises the following step:
Produce a previewing video streaming according to this image data crossfire; Wherein, this previewing video streaming comprises one first previewing image and looks lattice;
Transmit this previewing video streaming to previewing interface module to export this previewing video streaming;
Produce an image output crossfire according to this image data crossfire; Wherein, this image output crossfire comprises one first image output and looks lattice to looking lattice by the first previewing image;
Transmit the temporary module of this image output crossfire to an image, with the buffer memory unit of temporary this image output crossfire in the temporary module of this image; And
Receive an image capture order and in this buffer memory unit, export this first image output according to this image capture order and look lattice; Wherein this image capture order results from this previewing interface module reception and exports this first previewing image and look after the lattice.
14. image acquisition method as claimed in claim 13, wherein this previewing video streaming comprises and is positioned at the one second previewing image that this first previewing image looks after the lattice and looks lattice; A time point that receives this image capture order is to receive and export this second previewing image and look in the process of lattice in this previewing interface module; Wherein this first image output is looked lattice output step and is comprised: determine this first image output of output to look lattice according to this time point and a default previewing delay time.
15. image acquisition method as claimed in claim 13, wherein this first image output is looked lattice output step and comprised: an identiflication number that has according to this first previewing image determines that exporting this first image output from this buffer memory unit looks lattice.
16. image acquisition method as claimed in claim 13, wherein this previewing interface module receives and exports that this first previewing image is looked the sequential of lattice and the temporary module of this image receives and temporary this first image output is looked lattice sequential is to carry out synchronously.
17. image acquisition method as claimed in claim 13, wherein this previewing video streaming generation step comprises: reduce the image analytic degree of this image data crossfire, to produce this previewing video streaming.
18. image acquisition method as claimed in claim 13, wherein this image output crossfire transfer step comprises:
Transmitting this image output crossfire to the image compression unit in the temporary module of this image handles; And
This image output crossfire after the temporary processing in this buffer memory unit.
19. image acquisition method as claimed in claim 13, wherein this image output crossfire transfer step comprises:
It is to deposit plural working area in regular turn in that the plural image output of this image output crossfire is looked lattice; And
After this working area of most end is deposited in, this image output that continues is looked lattice return to make carbon copies in regular turn from this initial working area and deposit in.
20. image acquisition method as claimed in claim 13, wherein this image output crossfire generation step comprises: keep in module according to this image output crossfire of the initial generation of an image capture warning order to this image.
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