CN102595050A - Imaging device - Google Patents
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- CN102595050A CN102595050A CN2011103413943A CN201110341394A CN102595050A CN 102595050 A CN102595050 A CN 102595050A CN 2011103413943 A CN2011103413943 A CN 2011103413943A CN 201110341394 A CN201110341394 A CN 201110341394A CN 102595050 A CN102595050 A CN 102595050A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 86
- 230000015654 memory Effects 0.000 claims description 29
- 230000008859 change Effects 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 4
- 241000219739 Lens Species 0.000 description 56
- 210000000695 crystalline len Anatomy 0.000 description 56
- 238000005520 cutting process Methods 0.000 description 40
- 238000005375 photometry Methods 0.000 description 40
- 210000003128 head Anatomy 0.000 description 36
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- 238000000034 method Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 18
- 239000000284 extract Substances 0.000 description 8
- 206010034972 Photosensitivity reaction Diseases 0.000 description 7
- 230000036211 photosensitivity Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 230000005055 memory storage Effects 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 6
- 230000006399 behavior Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
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Abstract
The invention provides an imaging device, which can shorten the time for shooting the next still image. The imaging device comprises an imaging element, wherein a two-dimensional arrangement consists of a plurality of pixels of signal charges corresponding to the exposure amount and is provided with a memorizer for storing the image signals of all the pixels; an imaging control part which performs the following control operation: subjecting the imaging element to a first exposure, storing the image signals of all the pixels in the memorizer, subjecting the imaging element to a second exposure according to the first read-out control, and between the read-out period of two continuous fields, a second read-out control for the image signal related to the second exposure is read out; and an imaging condition determination part used for determining the imaging condition related to the first exposure.
Description
Technical field
The present invention relates to camera head, more specifically, relating to makes public obtains the camera head of picture signal.
Background technology
When taking rest image, before exposure, carry out the action of AE and AF usually, carrying out under the luminous situation of photoflash lamp, also further be used to determine the preparatory luminous action of the luminous quantity of main light emission sometimes.
The preparatory luminous action of the action of these AE and AF or photoflash lamp (be made as here and also comprise preparatory luminous warming-up exercise and main light emission warming-up exercise) need be carried out before the exposure of rest image; Each action needs the time of implementation to a certain degree, the therefore exposure of beginning rest image after the time of these actions is carried out in cost.
Here; In the exposure control of AE; Adopt the optics aperture that passes through scope (hereinafter to be referred as making aperture) of regulation photography light beam mostly; This aperture constitutes in most camera heads the scope of passing through of light beam is carried out mechanicalness control, therefore need change the numerical aperture of this aperture the time to a certain degree.
In addition, AF it is also known for the structure of the view data that use obtains from the imaging apparatus of taking rest image except the structure that special-purpose range finding element is set.The latter is so-called high speed image AF (Imager AF:IAF); Be following technology: while move the picture signal that focusing lens is repeatedly obtained the AF subject area; Search for the maximum lens location of contrast composition of resulting image, and the lens location that searches is made as focusing position.Therefore, under the situation of using high speed image AF, till focusing, still need the time to a certain degree.
And, in order to obtain the data on basis, in illuminating exposure in advance, carry out luminously in advance as the photoflash lamp luminous quantity of decision main light emission, (carrying out repeatedly while make the luminous quantity difference usually) that before carrying out main light emission, to carry out once above is luminous in advance.In addition, in advance luminous and main light emission all need luminous warming-up exercise before luminous carrying out reality, the time that this luminous warming-up exercise also need be to a certain degree.As an example, in Fig. 3 of TOHKEMY 2003-116142 communique, put down in writing the technology of carrying out the preparatory luminous exposure of photoflash lamp before the main exposure carrying out.Carry out during can knowing the luminous in advance vertical synchronization before carrying out main exposure of this photoflash lamp, under the preparatory luminous situation of carrying out this communique record, before the exposure of beginning rest image, need time corresponding.
[patent documentation 1] TOHKEMY 2003-116142 communique
And, be after all running through the picture signal that obtains through a rest image exposure in the past, carry out the process of AE, AF, the luminous warming-up exercise of photoflash lamp, therefore be difficult to shorten discharge time lag, also be difficult to increase the company of each unit interval and clap number.
Summary of the invention
The present invention In view of the foregoing accomplishes just; Its purpose is to provide a kind of camera head; Cut apart the situation of reading of carrying out rest image and compare with not utilizing; Can shorten to the time that can take till the next rest image, and can increase each unit interval can even clap number.
In order to achieve the above object; The camera head of certain mode of the present invention makes public and obtains picture signal; In this camera head; Have: imaging apparatus, its two-dimensional arrangements have a plurality of pixels that produce the signal charge corresponding with exposure, have the memory of the picture signal of all pixels of storage; Imaging control part; It is controlled as follows: make said imaging apparatus carry out the 1st exposure control of the 1st exposure; The picture signal of all pixels that to carry out the said imaging apparatus of said the 1st exposure stores in the said memory; And according to each read successively all pixels that this memory stores picture signal the 1st read control; Make said imaging apparatus carry out the 2nd exposure control of the 2nd exposure, and between the said the 1st reads between two continuous field reading durations of order in the control, read the 2nd of the picture signal relevant and read control with said the 2nd exposure control; And the photography conditions determination section, it is according to reading the picture signal that control is read, decision and next time or the next later relevant photography conditions of the 1st exposure control through the said the 2nd.
According to camera head of the present invention, cut apart the situation of reading of carrying out rest image and compare with not utilizing, can shorten to the time that can take till the next rest image, and can increase each unit interval can even clap number.
Description of drawings
Fig. 1 is the block diagram of structure that the camera head of embodiment of the present invention 1 is shown.
Fig. 2 is illustrated in the circuit diagram that is arranged on the structure example of the pixel on the imaging apparatus in the above-mentioned execution mode 1.
Fig. 3 is the figure of the state of interior electromotive force of the pixel of (in the exposure) in the electric charge accumulation that illustrates in the above-mentioned execution mode 1 and electric charge.
Fig. 4 is the figure of the state of interior electromotive force of the pixel in the overall situation transmission that illustrates in the above-mentioned execution mode 1 and electric charge.
Fig. 5 is illustrated in the above-mentioned execution mode 1, the figure of the electromotive force in the pixel when after the overall situation transmits completion, under transistor T X2, having kept electric charge and the state of electric charge.
Fig. 6 is illustrated in the above-mentioned execution mode 1, the figure of the electromotive force in the pixel during electric charge under waiting transferred transistor T X2 and the state of electric charge.
Fig. 7 is illustrated in the above-mentioned execution mode 1, the figure of the electromotive force in the pixel under the transistor T X2 when signal is accumulated the FD of portion and transmitted electric charge and the state of electric charge.
Fig. 8 is illustrated in the above-mentioned execution mode 1, the figure of the electromotive force in signal is accumulated the pixel when having kept electric charge among the FD of portion and the state of electric charge.
The sequential chart of the action of the camera head when Fig. 9 is the live view that illustrates in the above-mentioned execution mode 1.
Figure 10 is illustrated in the above-mentioned execution mode 1, the sequential chart of the action of the camera head when also carrying out the live view demonstration in the continuous process of taking many rest images and reading.
Figure 11 is illustrated in the camera head of above-mentioned execution mode 1, is cutting apart the sequential chart that carries out the processing of AE according to the picture signal that obtains from imaging apparatus in the process of reading rest image.
Figure 12 is illustrated in the camera head of above-mentioned execution mode 1, is cutting apart the flow chart that carries out the processing of AE according to the picture signal that obtains from imaging apparatus in the process of reading rest image.
Figure 13 is illustrated in the camera head of execution mode 2 of the present invention, is cutting apart the sequential chart that carries out the processing of AF according to the picture signal that obtains from imaging apparatus in the process of reading rest image.
Figure 14 is illustrated in the camera head of above-mentioned execution mode 2, is cutting apart the flow chart that carries out the processing of high speed image AF according to the picture signal that obtains from imaging apparatus in the process of reading rest image.
Figure 15 is illustrated in the camera head of execution mode 3 of the present invention, is cutting apart to carry out in advance luminous in the process of reading rest image and according to the sequential chart of the processing of the photoflash lamp luminous quantity of the picture signal decision main light emission that obtains from imaging apparatus.
Figure 16 is illustrated in the camera head of above-mentioned execution mode 3, is cutting apart to carry out in advance luminous in the process of reading rest image and according to the flow chart of the processing of the photoflash lamp luminous quantity of the picture signal decision main light emission that obtains from imaging apparatus.
Label declaration
1: camera lens (camera lens part); 2: camera lens control part (camera lens part); 3: aperture (aperture portion); 4: aperture control part (aperture portion); 5: imaging apparatus; 6: imaging control part; The 7:A/D converter section; 8: volatile memory; 9: image processing part; 10: exposure control part (photography conditions determination section, conditions of exposure determination section); 11:AF handling part (photography conditions determination section, focusing conditional decision portion); 12: external memory storage; 13: display part; 14: operating portion; 15: nonvolatile memory; 16: photoflash lamp control part (photoflash lamp portion); 17: flashlight charging portion (photoflash lamp portion); 18: photoflash lamp illuminating part (photoflash lamp portion); 19: power control part; 20: power supply unit; 21: systems control division (photography conditions determination section, photoflash lamp luminous quantity determination section, focusing conditional decision portion).
Embodiment
Below, with reference to description of drawings execution mode of the present invention.
[execution mode 1]
Fig. 1 to Figure 12 shows execution mode 1 of the present invention, and Fig. 1 is the block diagram that the structure of camera head is shown.
As shown in Figure 1, this camera head has: as the camera lens 1 and the camera lens control part 2 of camera lens part; Aperture 3 and aperture control part 4 as aperture portion; Imaging apparatus 5 and imaging control part 6 as image pickup part; A/D converter section 7; Volatile memory 8; Image processing part 9; Exposure control part 10; AF handling part 11; Display part 13; Operating portion 14; Nonvolatile memory 15; Photoflash lamp control part 16, flashlight charging portion 17 and photoflash lamp illuminating part 18 as photoflash lamp portion; Power control part 19; Power supply unit 20 and systems control division 21.In addition, in Fig. 1, also put down in writing external memory storage 12, but constitute can be with respect to the storage card of camera head dismounting etc. for this external memory storage 12, also can not be the inherent structure in the camera head therefore.
The optical image that camera lens 1 will be taken the photograph body is imaged onto in the camera watch region of imaging apparatus 5, comprises the focusing lens that is used to regulate the focusing position.
Camera lens control part 2 drives the focusing lens of camera lens 1 to regulate the focusing position.That is, camera lens control part 2 drives the focusing lens that camera lens 1 is comprised according to the control that receives the systems control division 21 of the AF evaluation of estimate relevant with high speed image AF (IAF) from AF handling part 11, makes the shot object image focusing that is imaged on the imaging apparatus 5.In addition, camera lens control part 2 outputs to systems control division 21 with the lens driving information of lens location etc.
3 pairs on aperture arrives the scope of passing through of the light beam of imaging apparatus 5 and carries out mechanicalness control from camera lens 1.Because aperture 3 carries out such mechanicalness control, and is therefore of the back, wanting to change f-number needs the time to a certain degree long.
Aperture control part 4 is controlled and is driven aperture 3, to reach this f-number according to the control of the systems control division 21 that receives the f-number that is determined by exposure control part 10.In addition, aperture control part 4 outputs to systems control division 21 with the aperture activation bit.
Imaging apparatus 5 is that the optical image of being taken the photograph body by the quilt of camera lens 1 imaging is carried out opto-electronic conversion and is output as the image sensor of picture signal.This imaging apparatus 5 the has had two-dimensional arrangements camera watch region of a plurality of pixels of the generation signal charge corresponding with exposure, the memory with picture signal of all pixels of storage can carry out 1 frame is divided into and read a plurality of cut apart.And imaging apparatus 5 can carry out the reading of subregion (for example the reading of the reading of the ranging region used of AF, photometry region that AE uses, light modulation zone that the photoflash lamp light modulation is used read etc.) of the only expectation in the camera watch region.In addition, with reference to Fig. 2 the concrete dot structure example of this imaging apparatus 5 being described in the back.
Imaging control part 6 control as inferior is moved with imaging apparatus 5 relevant shootings: the exposure that resets based on the photoelectric conversion part PD (with reference to Fig. 2) in the pixel of this imaging apparatus 5 begins, be sent to the reading of electric charge of the memory (with reference to Fig. 2) the pixel based on the end exposure of the transmission that is accumulated in the signal charge among this photoelectric conversion part PD with from photoelectric conversion part PD.In the control of this imaging control part 6, comprise the control of so-called global shutter (the element shutter that begins and constitute based on the end exposure that transmits in the lump of the signal charge of all pixels by the exposure that resets in the lump) based on all pixels.As the back specified, this imaging control part 6 was controlled as follows: the 1st exposure control makes imaging apparatus 5 carry out the 1st exposure (particularly, utilizing the main exposure of global shutter); The 1st reads control, and the picture signal of all pixels that will carry out the imaging apparatus 5 of the 1st exposure stores in the memory, and according to each picture signal of readout memory all pixels of storing successively; The 2nd exposure control makes imaging apparatus 5 carry out the 2nd exposure (particularly, utilizing exposure that the moving image of global shutter uses and photography conditions to determine the exposure of usefulness); And the 2nd read control, between the 1st reads between two continuous field reading durations of order in the control, from least a portion of the pixel that comprises of the place of reading end that the 1st reads control, reads and the relevant picture signal of the 2nd exposure control.
A/D converter section 7 set according to photosensitivity the analog picture signal from imaging apparatus 5 outputs amplified after, convert the picture signal of this simulation into digital signal.
Volatile memory 8 is used for the picture signal of having carried out digital translation by A/D converter section 7 is stored temporarily.
Image processing part 9 is implemented various image processing according to the control of systems control division 21 to 8 image stored signals of volatile memory.This image processing part 9 also has following function: utilized the above-mentioned the 2nd to read the control picture signal of reading (perhaps as required from what volatile memory 8 stored; Utilize and the above-mentioned the 1st read the control picture signal of reading) in extract photometry and use data with data and AF, and output to systems control division 21.
Exposure control part 10 is following photography conditions determination sections: according to using data via systems control division 21 from the photometry that image processing part 9 receives, decision is as shutter speed (time for exposure), f-number, the camera photosensitive degree exposure values such as (gains) of photography conditions.Therefore, this exposure control part 10 is brought into play function as following conditions of exposure determination section: use data according to photometry, decision comprises the conditions of exposure of the f-number of aperture portion, as controlling relevant photography conditions with next time or the 1st later exposure of next time.Said aperture control part 4 receives the f-number by these exposure control part 10 decisions via systems control division 21, and aperture 3 is controlled and driven.Equally, above-mentioned imaging control part 6 receives the time for exposure by these exposure control part 10 decisions via systems control division 21, and the element shutter of imaging apparatus 5 is controlled.
AF handling part 11 is following photography conditions determination sections: according to using data via systems control division 21 from the AF that image processing part 9 receives, calculate the AF evaluation of estimate as photography conditions, and output to systems control division 21.Like this, this camera head constitutes through high speed image AF and carries out automatic focusing.Systems control division 21 is also as following photography conditions determination section performance function: according to the AF evaluation of estimate that receives from AF handling part 11, calculate the lens drive amount as photography conditions, and output to camera lens control part 2.Above-mentioned camera lens control part 2 receives the lens drive amount that is calculated by this systems control division 21, and the focusing lens that camera lens 1 is comprised drives.
External memory storage 12 is to be used for being non-volatile recording medium that recording signal is preserved by image processing part 9 image processing.
Operating portion 14 is used to carry out the various operation inputs with respect to this camera head.In this operating portion 14, comprise like inferior functional unit: the mains switch that is used for the power supply of on/off camera head; Be used for single image photography, connect and take the release-push that input is indicated in shadow and moving image photography etc.; Be used to set still image photographing pattern, moving image photograph mode, connect the shadow pattern of taking, the mode button of photoflash lamp light-emitting mode, AF pattern (AF, single AF etc. continuously), AE pattern (program AE, aperture priority AE, Shutter speed priority AE etc.), live view pattern etc.
Nonvolatile memory 15 is following memories: being used for of being carried out by systems control division 21 controlled the whole handling procedure of this camera head and the parameter used in various processing etc. is carried out non-volatile memories.
Body irradiating illumination light is taken the photograph to quilt by photoflash lamp portion under the control of systems control division 21, as stated, comprise photoflash lamp control part 16, flashlight charging portion 17 and photoflash lamp illuminating part 18.
The charging action of 16 pairs of flashlight charging portions 17 of photoflash lamp control part and the action of the luminous quantity of photoflash lamp illuminating part 18, luminous timing etc. are controlled.
17 pairs of energy that provide from power control part 19 of flashlight charging portion are accumulated, and as being used to make photoflash lamp illuminating part 18 luminous energy to offer this photoflash lamp illuminating part 18.
Photoflash lamp illuminating part 18 is according to the triggering signal from 16 inputs of photoflash lamp control part, and it is luminous that the energy that use provides from flashlight charging portion 17 carries out photoflash lamp.
Power control part 19 will offer the each several part in the camera head that comprises systems control division 21 from the electric power that power supply unit 20 provides.
Power supply unit 20 is the supply sources that constitute the electric power that comprises secondary cell or primary cell.
Then, Fig. 2 is the circuit diagram that the structure example that is arranged on the pixel in the imaging apparatus 5 is shown.
In Fig. 2, PD (photodiode) is a photoelectric conversion part, and FD (float proliferation part) is that the signal that when electric charge is read, the signal of photoelectric conversion part PD is kept is temporarily accumulated portion.
FT is the transistor that when applying the PD reset pulse, photoelectric conversion part PD is resetted, and is connected with photoelectric conversion part PD and voltage source V DD.
Accumulate between the FD of portion at photoelectric conversion part PD and signal, be connected in series three transistor T X1, TX2, TX3 can form the electromotive force barrier through applying control signal to transistor T X1 and TX3, make the semiconductor portion under the transistor T X2 bring into play function as memory.Therefore, transistor T X1 is sent to the door portion performance function under the transistor T X2 as the signal with photoelectric conversion part PD, and transistor T X3 accumulates the door portion performance function of the FD of portion as the signal under the transistor T X2 being sent to signal.In addition, three transistor T X1, TX2, TX3 totally are sent to signal as the signal with photoelectric conversion part PD and accumulate the transmission portion of the FD of portion, door portion performance function.
Ta uses transistor as the amplification of enlarging section performance function, constitutes the source electrode output amplifier by voltage source V DD and current source.The signal that signal is accumulated the FD of portion amplifies through amplifying with transistor T a, and is outputed to vertical conveyer line via the selection transistor T b that has applied strobe pulse.
Tc accumulates FD of portion and the transistor that the input part that amplifies with transistor T a resets to signal, has applied the FD reset pulse.
Then, transmission describes to the electric charge in the pixel with reference to Fig. 3～Fig. 8.Fig. 3 is the figure that the state of electromotive force and electric charge in the pixel of (in the exposure) in the electric charge accumulation is shown; Fig. 4 is the figure that the state of electromotive force and electric charge in the pixel of the overall situation in transmitting is shown; Fig. 5 is the figure of the state of electromotive force and electric charge in the pixel that is illustrated in when under transistor T X2, having kept electric charge after the overall situation transmit to be accomplished; The figure of the electromotive force in the pixel when Fig. 6 is the electric charge that is illustrated in etc. under the transferred transistor T X2 and the state of electric charge; Fig. 7 is the figure of the state of electromotive force and electric charge in the pixel that illustrates under the transistor T X2 when signal is accumulated the FD of portion and transmitted electric charge, and Fig. 8 is illustrated in the figure that signal is accumulated the state of interior electromotive force of pixel when having kept electric charge among the FD of portion and electric charge.In addition, the electric charge that produces through opto-electronic conversion is an electronics, and therefore in these figure, the high side of electromotive force is an electronegative potential, and the low side of electromotive force is a high potential.
Before the beginning electric charge accumulation,, carry out resetting of photoelectric conversion part PD through applying reset pulse to transistor FT.When global shutter, carry out resetting of this photoelectric conversion part PD simultaneously to all pixels in the imaging apparatus 5.And, the moment of the moment that resets and finish of photoelectric conversion part PD for making public and beginning.
When photoelectric conversion part PD irradiates light, produce electronics as electric charge through photoelectric effect.As shown in Figure 3, the electric charge that is produced is accumulated in the electromotive force photoelectric conversion part PD lower than transistor FT and transistor T X1.
After through the predetermined time for exposure, the electromotive force of transistor T X1 and transistor T X2 is reduced to lower than the electromotive force of photoelectric conversion part PD, as shown in Figure 4 thus, send the electric charge in the photoelectric conversion part PD to transistor T X2.Exposure finishes owing to this electric charge transmits.When global shutter, carry out simultaneously transmitting (overall situation transmits) from the electric charge of this photoelectric conversion part PD to all pixels in the imaging apparatus 5.
Be controlled to be after the electric charge from photoelectric conversion part PD transmits end, the electromotive force of transistor T X1 uprises once more.Thus, as shown in Figure 5, electric charge is accumulated under the transistor T X2 as memory performance function, reading after waiting for.
When reading, at first as shown in Figure 6, the electromotive force that is controlled to be transistor T X2 is accumulated the FD of portion height than signal.
Then, after transistor T c being applied the FD reset pulse and coming that signal accumulated the FD of portion and carried out resetting, come read output signal to accumulate the resetting voltage of the FD of portion to selecting transistor T b to apply strobe pulse.
Afterwards, accumulate the electromotive force of the mode oxide-semiconductor control transistors TX3 that the electromotive force well of the FD of portion moves from the electromotive force well of transistor T X2 to signal with electric charge, as shown in Figure 7 thus, electric charge is sent to signal under the transistor T X2 accumulates the FD of portion.
After transmitting electric charge, the electromotive force that is controlled to be transistor T X3 uprises once more, and is as shown in Figure 8, electric charge remained on signal accumulate among the FD of portion.Then, read and be accumulated in signal and accumulate the signal voltage among the FD of portion to selecting transistor T b to apply strobe pulse.The resetting voltage of reading before the signal voltage of here reading is corrected partly and from imaging apparatus 5 is exported.
Like this, from imaging apparatus 5 output calibrations with dot structure shown in Figure 2 the picture signal of reset noise.
Fig. 9 is the sequential chart of the action of the camera head when live view is shown.
Comprise the action of the image pickup part of imaging apparatus 5 according to the vertical synchronizing signal VD that produces from imaging control part 6.
In this example shown in Figure 9, this vertical synchronizing signal VD alternately produces the macrocyclic signal that short-period signal that moving image uses and rest image are used.
Here, short the reasons are as follows of cycle of the vertical synchronizing signal VD that uses of the period ratio rest image of the vertical synchronizing signal VD that uses of moving image.That is, be because generally be arranged on imaging apparatus 5 in the quantity of all pixels compare, be arranged on the negligible amounts (for example, the former is 1,000 ten thousand pixels, and is relative therewith, and the latter is 300,000 pixels etc.) of the display pixel in the display part 13.Therefore, remove between for example carrying out with the ratio of in multirow, using 1 row and read motion image signal, and in 1 row, also carry out pixel addition etc., the part of reading the required time of motion image signal and be rest image gets final product.
And, in conjunction with the cycle behind short period vertical synchronizing signal VD and the long period vertical synchronizing signal VD constitute identical with the display cycle of moving image.Here, as shown in Figure 9, carry out the Global reset that is shown in dotted line by vertical, and carry out after the time for exposure transmitting having passed through moving image by the overall situation shown in the ordinate, carry out the shooting action (utilizing the action of the 2nd exposure control) of moving image thus.And, synchronous with short period vertical synchronizing signal VD afterwards, for example carry out moving image successively and read (in Fig. 9, illustrating) with oblique line with the signal of row with behavior unit.Therefore, with the display cycle synchronously from imaging apparatus 5 output movement images.
In this example shown in Figure 9, to the part of for example even number line (2N is capable: N is positive integer) or all carry out reading of moving image.
The motion image signal of reading from imaging apparatus 5 is being stored the volatile memory 8 via A/D converter section 7, and by image processing part 9 be treated to moving image show with after, on display part 13, be shown as the live view image.
Then, Figure 10 is the sequential chart that the action of the camera head when also carrying out the live view demonstration in the process of taking many rest images continuously and reading is shown.
The action of this moment has added each action of image processing of the reading of exposure, rest image, the rest image of rest image in action shown in Figure 9.
That is, shown in figure 10, carry out the Global reset that is shown in dotted line by thick vertical, and carry out after the time for exposure transmitting having passed through rest image by the overall situation shown in the thick ordinate, carry out the shooting action (utilizing the action of the 1st exposure control) of rest image thus.And synchronous with long period vertical synchronizing signal VD afterwards, the signals that for example carry out all row that rest image uses successively with behavior unit are read (in Figure 10, illustrating with oblique thick line).
But, can not read all row of rest image in during a macrocyclic vertical synchronization, carry out reading (cut apart and read) of rest image during therefore being divided into a plurality of macrocyclic vertical synchronization.In this example shown in Figure 10, be divided into even number line (2N is capable) and odd-numbered line (2N+1 is capable) two parts, according to reading during macrocyclic each vertical synchronization.In addition, with row, adopted a part of or whole row that carries out cutting apart for the 1st time the row read (in Fig. 9 and example shown in Figure 10, be even number line as stated) as moving image.
In addition, about any one of rest image and moving image, reading of picture signal is all synchronous with vertical synchronizing signal VD, therefore than picture signal read during the more forward in time vertical synchronization in make public.Therefore; Possibly produce rest image read with the exposure of moving image during on overlap or moving image read with the exposure of rest image during on situation about overlapping; But be to use the for example imaging apparatus 5 of structure shown in Figure 2, therefore can have realized this coincidence with comparalive ease.
The rest image signal of reading from imaging apparatus 5 is being stored the volatile memory 8 via A/D converter section 7, and by image processing part 9 be treated to rest image with after, for example be saved in the external memory storage 12.
And, in the process of reading of carrying out this rest image, also proceed the demonstration of the live view image on the display part 13.
Then, Figure 11 is illustrated in the camera head, is cutting apart the sequential chart that carries out the processing of AE according to the picture signal that obtains from imaging apparatus 5 in the process of reading rest image.
In the processing of above-mentioned Figure 10, cutting apart the intermittent exposure live view image of reading rest image and reading, but in the processing of this Figure 11, substitute the exposure of live view image and read, carry out photometry with the exposure of image with read.
That is, shown in figure 11, carry out the Global reset that is shown in dotted line by vertical, and after having passed through the photometry time for exposure, carry out transmitting by the overall situation shown in the ordinate, carry out the shooting action (action that utilize 2nd exposure control) of photometry thus with image.And, synchronous with short period vertical synchronizing signal VD afterwards, for example carry out photometry and read with the signal of row so that behavior unit is such shown in oblique line successively.Here, same with row with above-mentioned moving image, a part or the whole row that carries out cutting apart for the 1st time the row read (as stated, for example even number line) adopted in photometry with row.
The photometry of reading from imaging apparatus 5 is stored the volatile memory 8 via A/D converter section 7 with picture signal, and extracts the composition suitable with luminance signal by image processing part 9, uses data thereby generate photometry.This photometry is imported into exposure control part 10 with data via systems control division 21; And after carrying out the photometry computing and calculating light value, take shutter speed (time for exposure), f-number, the camera photosensitive degree exposure values such as (gains) of the photography conditions (with the relevant photography conditions of the 1st exposure control) of rest image as next time or later being used to next time according to this light value decision.
In order to become the f-number of such decision; Shown in Figure 11 like this; (aperture driving time) needs the time to a certain degree long during aperture control part 4 driving apertures 3 relevant with the exposure control (the 1st exposure control) of next or the rest image that next time is later, and at least a portion overlaps with the current control period (the 1st reads control period) of reading of cutting apart the rest image of reading.
Therefore, in this execution mode, exposure control part 10 is as the conditions of exposure determination section performance function of photography conditions determination section.
But; When the driving of aperture 3 does not finish; Can not carry out the shooting of next rest image, therefore from aperture drive till transmitting constantly to the overall situation of rest image the finish time during (accumulating the time control range) become time of the electric charge accumulation that can be used in rest image.Therefore,, this carries out the Global reset that rest image is used in accumulating the time control range.
The flow process of this processing is described with reference to Figure 12.Here, Figure 12 is illustrated in the camera head, is cutting apart the flow chart that carries out the processing of AE according to the picture signal that obtains from imaging apparatus 5 in the process of reading rest image.
When beginning this processing, wait for that the release-push of push portion 14 is imported photography indication (step S1).
Like this, being judged to be through systems control division 21 under the situation of having pushed release-push,, carry out the mode of the exposure that photometry uses with imaging control part 6 and control imaging apparatus 5 (step S2) according to the instruction of systems control division 21.
And, behind end exposure, read photometry with image (step S3) from imaging apparatus 5.
Extract photometry from the photometry of being read with image through image processing part 9 and use data, and determine the conditions of exposure (step S4) that still image photographing is used according to the photometry of being extracted with data through exposure control part 10.
Systems control division 21 is judged by the f-number in the conditions of exposure of exposure control part 10 decisions and whether has been carried out changing (step S5) from the f-number of current setting.
, be judged to be under the situation that has changed f-number, 21 pairs of apertures of systems control division 3 carry out drive controlling to become the f-number (step S6) via 4 appointments of aperture control part here.
Finish, perhaps in step S5, do not change under the situation of f-number in the processing that is judged to be this step S6, transmit with the overall situation through Global reset and carry out the exposure (step S7) of rest image.
And, carry out the rest image exposure of step S7 and (step S8) set in the required gain (rest image photosensitivity) of picture signal that amplification is read from imaging apparatus 5.
Then, systems control division 21 judges whether set the shadow pattern of even taking, and keeps the release-push (whether exist to connect and clap indication) (step S9) of press operating part 14.
, be judged to be under the situation of exist to connect clapping indication here, carry out step S7 or after among the step S15 that states the 1st time of the rest image after the exposure cut apart and read, and carry out the exposure (step S10) of photometry with image.
During macrocyclic vertical synchronization the 1st time cut apart read end after, during ensuing short-period vertical synchronization in, carry out in step S10 the photometry after the exposure with read (the step S11) of image.
And; Exposure control part 10 bases are used the data operation light value from the photometry that the photometry of being read extracts with image; And exposure control part 10 uses the light value of institute's computing, carries out the decision (step S12) of still image photographing conditions of exposure according to for example APEX system.
Then, systems control division 21 is judged in step S12 by the f-number in the conditions of exposure of exposure control part 10 decisions and whether has been carried out changing (step S13) from the f-number of current setting.
, be judged to be under the situation that has changed f-number, 21 pairs of apertures of systems control division 3 carry out drive controlling to become the f-number (step S14) via 4 appointments of aperture control part here.As stated, with during cut apart with the 2nd time of the rest image that then carries out and to read the mode that overlaps and carry out the driving of this aperture 3.
Finish in the processing that is judged to be this step S14, perhaps in step S13, do not change under the situation of f-number; Carry out rest image that in step S7, makes public or the rest image that when carrying out this step S15 last time, has made public, cut apart for the 2nd time and read, and carry out the exposure (step S15) that next rest image is used.
And the gain (rest image photosensitivity) during with the rest image that reads out among the step S15 new exposure is set at the gain (step S16) in the conditions of exposure that in step S12, determines, returns step S9 afterwards.
On the other hand; In step S9, be judged to be and do not exist under the situation of connect clapping indication, promptly take pushing of release-push in the shadow and ended and connect to clap under the situation that indication finishes connecting; Perhaps take the shadow pattern and only carry out when having the picture signal of not reading this picture signal (step S17) under the situation of photography of single image in the company of setting not.In addition, reading of the rest image among this step S17 can be not necessarily to cut apart to read.After having carried out the reading of picture signal like this, finish and to handle.
According to this execution mode 1, can cut apart read rest image during in, carry out the exposure that photometry is used, the exposure controlled condition of the rest image that decision next time or next time are later.At this moment; Overlap with cutting apart between reading duration of rest image during can making next time or later being used to next time take the drive controlling of aperture 3 of rest image; Therefore compare with not utilizing the situation of cutting apart and having carried out carrying out after the reading an of rest image exposure that photometry uses, can shorten to the time that to take till the next rest image.That thus, can increase each unit interval can even clap number.
[execution mode 2]
Figure 13 and Figure 14 show execution mode 2 of the present invention, and Figure 13 is illustrated in cutting apart the sequential chart that carries out the processing of AF according to the picture signal that obtains from imaging apparatus 5 in the process of reading rest image in the camera head.
In this execution mode 2,, mainly only difference is described part mark same numeral identical and omission explanation with above-mentioned the 1st execution mode.
In the processing of Figure 11 of above-mentioned execution mode 1; Carried out photometry the intermittence of reading rest image with the exposure of image with read cutting apart; But in the processing of this Figure 13, substitute photometry with the exposure of image with read, carry out high speed image AF with the exposure of image with read.And, in this execution mode, show and be divided into the example that carries out reading cutting apart of rest image for 4 times.
That is, shown in figure 13, carry out the Global reset that is shown in dotted line by vertical, and carry out after the time for exposure transmitting having passed through high speed image AF by the overall situation shown in the ordinate, carry out the shooting action (action that utilize 2nd exposure control) of high speed image AF thus with image.And, synchronous with short period vertical synchronizing signal VD afterwards, for example with behavior unit successively shown in oblique line such high speed image AF that carries out read with the signal of row.Here, same with row with row and photometry with above-mentioned moving image, high speed image AF has adopted a part or the whole row that carries out cutting apart for the 1st time the row of reading with row.
In addition; According to other execution modes, shown in figure 13 here, high speed image AF has been made as a part of carrying out cutting apart for the 1st time the row read or all with row; But in this execution mode, being divided into 4 times has carried out cutting apart reading; Therefore be not limited thereto,, need only rest image and be reading that the pixel of having read just can begin that high speed image AF uses as long as rest image is that the pixel that has been sent to memory just can begin the exposure that high speed image AF uses.Therefore; And then the 1st cuts apart high speed image AF after reading and becomes the 1st and cut apart row or its part of reading in reading; And and then the 2nd cut apart high speed image AF after reading and also can become the 1st or the 2nd and cut apart row or its part of reading in reading; Equally, and then, the 3rd cuts apart high speed image AF after reading and also can become the 1st～the 3rd and cut apart the row read in reading or its part etc.
The high speed image AF that reads from imaging apparatus 5 is stored volatile memory 8 with picture signal via A/D converter section 7, and is extracted the compositions suitable with marginal element and generated high speed image AF and use data by image processing part 9.This high speed image AF is imported into AF handling part 11 with data via systems control division 21.After the exposure control (the 1st exposure control) that rest image relates to finishes; It is (same during with general high speed image AF on one side the focusing position of camera lens part to be moved; Mode with the peak value of search edge amount is carried out the mobile of this focusing position), use picture signal Yi Bian read several times with the high speed image AF of the origin of data as this high speed image AF.AF handling part 11 is used data according to the high speed image AF that imports several times like this, calculates AF evaluation of estimate (high speed image AF computing).Systems control division 21 receives the AF evaluation of estimate from AF handling part 11, and decision becomes the focusing position of the camera lens part of focusing position, takes the photography conditions (photography conditions of the 1st exposure control) of rest image as next or later being used to next time.
At this moment; Shown in Figure 13 like this; Camera lens control part 2 drive focusing lenss with determine next time or the next time focusing position during later rest image during need the time to a certain degree long, and at least a portion overlaps with the current control period (the 1st reads control period) of reading of cutting apart the rest image of reading.But; In Figure 13, do not illustrate as an example, but also can be so that next time or next time later rest image exposure control (the 1st exposure control) in the focusing position mode that becomes the focusing position of decision as above-mentioned drive focusing lens during at least a portion of (the driving focusing lens that in Figure 13, that kind is shown up to till the focal position during) with arrow overlap with the current control period (the 1st reads control period) of reading of cutting apart the rest image of reading.
Therefore, in this execution mode, AF handling part 11 and the focusing conditional decision portion performance function of exposure control part 21 as the photography conditions determination section.
The flow process of this processing is described with reference to Figure 14.Here, Figure 14 is illustrated in the camera head, is cutting apart the flow chart that carries out the processing of high speed image AF according to the picture signal that obtains from imaging apparatus 5 in the process of reading rest image.
When beginning this processing, wait for that the release-push of push portion 14 is imported photography indication (step S21).
Like this, be judged to be through systems control division 21 under the situation of having pushed release-push, camera lens control part 2 drives the focusing lens (step S22) of camera lens 1 according to the instruction of systems control division 21.
Then, imaging control part 6 is controlled the exposure (step S23) that imaging apparatuss 5 are used to carry out high speed image AF.
And, behind end exposure, read high speed image AF with image (step S24) from imaging apparatus 5.
The high speed image AF that is read extracts high speed image AF with image through image processing part 9 and uses data, and carries out high speed image AF computing (step S25) according to the high speed image AF that is extracted with data by AF handling part 11.
Systems control division 21 judges whether detect focusing position (focal position) (step S26) according to the result of 11 computings of AF handling part.
, under the situation that does not detect focusing position, return above-mentioned step S22 here, Yi Bian drive focusing lens, Yi Bian further carry out the search of focusing position.
Like this, in step S26, be judged to be under the situation that detects focusing position, systems control division 21 makes it become detected focusing position (step S27) via the focusing lens of camera lens control part 2 drive controlling camera lenses 1.
Afterwards, carry out the exposure (step S28) of rest image through Global reset and overall the transmission.
And, carry out the rest image exposure of step S28 and (step S29) set in the required gain (rest image photosensitivity) of picture signal that amplification is read from imaging apparatus 5.
Then, systems control division 21 judges whether set the shadow pattern of even taking, and keeps the release-push (whether exist to connect and clap indication) (step S30) of press operating part 14.
, be judged to be under the situation that has even bat indication, camera lens control part 2 drives the focusing lens (step S31) of camera lens 1 according to the instruction of systems control division 21 here.
Then, systems control division 21 judgement rest images cuts apart to read whether finish (step S32).
In this step S32, be judged to be and read cutting apart of rest image under the unclosed situation; Carry out step S28 or after among the step S40 that states or the step S41 the cutting apart of rest image after the exposure read, and carry out the exposure (step S33) of high speed image AF with image.
On the other hand, in this step S32, be judged to be and read cutting apart of rest image under the situation about having finished, only carry out of the exposure (step S34) of high speed image with image.
In step S33 or step S34 behind the end exposure, during ensuing short-period vertical synchronization in, carry out read (the step S35) of high speed image AF with image.
And,, carry out high speed image AF computing (step S36) through AF handling part 11 according to using data with the high speed image AF that image extracts from the high speed image AF that among step S35, reads.
Systems control division 21 judges whether detect focusing position (focal position) (step S37) according to the result of 11 computings of AF handling part.
, under the situation that does not detect focusing position, return above-mentioned step S31 here, Yi Bian drive focusing lens, Yi Bian further carry out the search of focusing position.
Like this, in step S37, be judged to be under the situation that detects focusing position, systems control division 21 makes it become detected focusing position (step S38) via the focusing lens of camera lens control part 2 drive controlling camera lenses 1.
And what systems control division was judged rest image cuts apart to read whether finish (step S39).
, read cutting apart of rest image under the unclosed situation being judged to be here, carry out remaining cutting apart and read, and carry out the exposure (step S40) of rest image at the focusing position place that is undertaken by step S38 after lens drive.
In addition, in step S39, be judged to be and read cutting apart of rest image under the situation about having finished, carry out the exposure (step S41) of rest image at the focusing position place that is undertaken by step S38 after lens drive.
And step S30 is returned in the gain (rest image photosensitivity) (step S42) when setting the rest image that reads out in new exposure among step S40 or the step S41 afterwards.
On the other hand, in step S30, be judged to be not exist to connect and clap under the situation of indicating, when having the picture signal of not reading this picture signal (step S43).In addition, reading of the rest image among this step S43 can be not necessarily to cut apart to read.After having carried out the reading of picture signal like this, finish and to handle.
According to this execution mode 2, can cut apart read rest image during in carry out the exposure that IAF uses, carry out the make public focusing control of rest image of next time or later being used to next time.At this moment; Can make camera lens control part 2 drive focusing lenss with determine next time or the next time focusing position during later still image photographing during overlap with cutting apart between reading duration of rest image; Therefore compare with not utilizing the situation of cutting apart and having carried out carrying out after the reading an of rest image exposure that IAF uses, can shorten to the time that to take till the next rest image.That thus, can increase each unit interval can even clap number.
[execution mode 3]
Figure 15 and Figure 16 show execution mode 3 of the present invention, and Figure 15 is illustrated in cutting apart in the camera head to carry out in advance luminous in the process of reading rest image and according to the sequential chart of the processing of the photoflash lamp luminous quantity of the picture signal decision main light emission that obtains from imaging apparatus 5.
In this execution mode 3,, mainly only difference is described explaining with above-mentioned execution mode 1,2 identical part mark same numeral and omissions.
In the processing of Figure 11 of above-mentioned execution mode 1; Carried out photometry the intermittence of reading rest image with the exposure of image with read cutting apart; In the processing of Figure 13 of above-mentioned execution mode 2; Carried out high speed image AF the intermittence of reading rest image with the exposure of image with read cutting apart, but in the processing of this Figure 15, substitute these photoflash lamp luminous quantities that are used to determine main light emission preparatory illuminating image exposure and read.In addition, this execution mode is to be divided into the example that carries out reading cutting apart of rest image for 2 times.
Promptly; Shown in figure 15; Carry out the Global reset that is shown in dotted line by vertical; Carry out in the control period luminously in advance in the 2nd exposure, passed through the light modulation time for exposure from Global reset after, carry out transmitting, carry out the shooting action (utilizing the action of the 2nd exposure control) of preparatory illuminating image thus by the overall situation shown in the ordinate.And, synchronous with short period vertical synchronizing signal VD afterwards, for example carry out the capable signal of preparatory illuminating and read so that behavior unit is such shown in oblique line successively., use row same with row, photometry with row and high speed image AF here, in advance a capable part or the whole row that carries out cutting apart for the 1st time the row of reading that adopted of illuminating with above-mentioned moving image.
The preparatory illuminating picture signal of reading from imaging apparatus 5 is stored volatile memory 8 via A/D converter section 7, and is extracted the compositions suitable with luminance signal and generated photometry and use data by image processing part 9.This photometry is imported into exposure control part 10 with data via systems control division 21 and carries out the photometry computing, thereby calculates light value.Systems control division 21 receives the light value that calculates from exposure control part 10; Determine the photoflash lamp luminous quantity of main light emission to take the photography conditions (photography conditions of the 1st exposure control) of rest image, and control photoflash lamp control part 16 as next or later being used to next time.Photoflash lamp control part 16 control flashlight charging portions 17 and photoflash lamp illuminating part 18 carry out main light emission according to the timing (promptly in the 1st exposure control period) of rest image exposure.
Therefore, in this execution mode, systems control division 21 is as the photoflash lamp luminous quantity determination section performance function of photography conditions determination section.
At this moment; Carry out in during continuous 2 times rest image exposure control (the 1st exposure control) preparatory luminous be under 1 time the situation; Shown in Figure 15 like this; Carry out main light emission luminous preparation during at least a portion and the 1st of (as shown in the figure, need time to a certain degree long) read control period and overlap.In addition, in advance luminous be under the situation more than 2 times, though not shown, carry out the 2nd time or the 2nd time later preparatory luminous or main light emission luminous preparation during at least a portion and the 1st of (needing the time to a certain degree to grow equally) read control period and overlap.
The flow process of this processing is described with reference to Figure 16.Here, Figure 16 is illustrated in the camera head, is cutting apart to carry out in advance luminous in the process of reading rest image and according to the flow chart of the processing of the photoflash lamp luminous quantity of the picture signal decision main light emission that obtains from imaging apparatus 5.
When beginning this processing, wait for that the release-push of push portion 14 is imported photography indication (step S51).
Like this; Be judged to be through systems control division 21 under the situation of having pushed release-push; According to the instruction of systems control division 21, control imaging apparatus 5 makes imaging control part 6 carry out the exposure (step S52) of light modulation with (more specifically being the preparatory illuminating that is used for the light modulation of main light emission).
And, behind end exposure, read preparatory illuminating image (step S53) from imaging apparatus 5.
Extract photometry through image processing part 9 from the preparatory illuminating image of being read and use data, and carry out the photometry computing according to the photometry of being extracted with data, thereby calculate light value through the control part 10 of making public.The light value that systems control division 21 calculates according to exposure control part 10, the photoflash lamp luminous quantity (step S54) of decision main light emission.
Then, carry out the exposure (step S55) of rest image through Global reset and overall the transmission.
And, carry out the rest image exposure of step S55 and (step S56) set in the required gain (rest image photosensitivity) of picture signal that amplification is read from imaging apparatus 5.
Then, systems control division 21 judges whether set the shadow pattern of even taking, and keeps the release-push (whether exist to connect and clap indication) (step S57) of press operating part 14.
, be judged to be under the situation of exist to connect clapping indication here, carry out step S55 or after among the step S61 that states the 1st time of the rest image after the exposure cut apart and read, while and in exposure, carry out the preparatory luminous exposure (step S58) of carrying out light modulation with image.
After finishing like this exposure that light modulation uses, during ensuing short-period vertical synchronization in, carry out read (the step S59) of preparatory illuminating image.
And, use data according to the photometry that extracts from the preparatory illuminating image of among step S59, reading, carry out the photometry computing through exposure control part 10, and determine the photoflash lamp luminous quantity (step S60) of main light emissions through systems control division 21.
Then, carry out rest image that in step S55, makes public or the rest image that when carrying out this step S61 last time, has made public, cut apart for the 2nd time and read, and carry out the exposure (step S61) that next rest image is used.
And step S57 is returned in the gain (rest image photosensitivity) (step S62) when setting the rest image that reads out in new exposure in the step 61 afterwards.
On the other hand, in step S57, be judged to be not exist to connect and clap under the situation of indicating, when having the picture signal of not reading this picture signal (step S63).In addition, reading of the rest image among this step S63 can be not necessarily to cut apart to read.After having carried out the reading of picture signal like this, finish and to handle.
According to this execution mode 3, can cut apart read rest image during in carry out the exposure that light modulation is used, carry out the make public photoflash lamp luminous quantity control of rest image of next time or later being used to next time.At this moment; Continuous 2 times the 1st exposure control period carry out preparatory luminous be under 1 time the situation; Can make the luminous preparation of carrying out main light emission during at least a portion and the 1st read control period (cutting apart between reading duration of rest image) and overlap; In advance luminous be under the situation more than 2 times; Can make the luminous preparation of carrying out the 2nd time or the 2nd time later preparatory luminous or main light emission during at least a portion and the 1st read control period and overlap, therefore compare with not utilizing the situation of cutting apart and having carried out carrying out after the reading an of rest image exposure that light modulation uses, can shorten to the time that can take till the next rest image.That thus, can increase each unit interval can even clap number.
In addition, the photography conditions determination section for example is primarily aimed at next order 1 exposure control use mostly according to reading the photography conditions of controlling the picture signal decision of reading through the 2nd.But,, also can the photography conditions that determined be continued on for the 1st later next time exposure control as described in above-mentioned each execution mode.
And; In above-mentioned each execution mode; Cut apart carried out respectively the intermittence of reading rest image moving image photography, photometry with photography, IAF with photography, light modulation with photography; But can according to during each short period vertical synchronization with suitable order carry out in these photographies more than 2, as long as can carry out, carry out in then can be during a short period vertical synchronization in these photographies more than 2.Perhaps, carrying out simultaneously under the situation of the processing more than 2, also can make up simultaneously and carry out according to reading the view data that obtains through 1 time.For example can also be used for photometry simultaneously, therefore can also in reading cutting apart of rest image, interruptedly not show moving image on one side, Yi Bian carry out photometry with obtaining the picture signal of using for moving image.
In addition, the present invention directly is not defined as above-mentioned execution mode, the implementation phase can be in the scope that does not break away from its purport structural element be out of shape and specialize.In addition, can form various inventions through the appropriate combination of the disclosed a plurality of structural elements of above-mentioned execution mode.For example, can from the entire infrastructure key element shown in the execution mode, delete several structural elements.And, can appropriate combination the structural element of different execution modes.Like this, certainly, can in the scope that does not break away from inventive concept, carry out various distortion and application.
Claims (4)
1. camera head, it makes public and obtains picture signal, and this camera head is characterised in that to have:
Imaging apparatus, its two-dimensional arrangements have a plurality of pixels that produce the signal charge corresponding with exposure, and have the memory of the picture signal of all pixels of storage;
Imaging control part, it is controlled as follows: make said imaging apparatus carry out the 1st exposure control of the 1st exposure; The picture signal of all pixels that to carry out the said imaging apparatus of said the 1st exposure stores in the said memory, and according to each read successively all pixels that this memory stores picture signal the 1st read control; Make said imaging apparatus carry out the 2nd exposure control of the 2nd exposure; And between the said the 1st reads between two continuous field reading durations of order in the control, read the 2nd of the picture signal relevant and read control with said the 2nd exposure control; And
The photography conditions determination section, it is according to reading the picture signal that control is read, decision and next time or the next later relevant photography conditions of the 1st exposure control through the said the 2nd.
2. camera head according to claim 1 is characterized in that,
This camera head also has aperture portion, and this aperture portion carries out machinery control to the scope of passing through of the light beam that arrives said imaging apparatus,
Said photography conditions determination section has the conditions of exposure determination section; This conditions of exposure determination section is according to reading the picture signal that control is read through the said the 2nd; Decision comprises the f-number of said aperture portion at interior conditions of exposure; As controlling relevant photography conditions with next time or the 1st later exposure of next time
Change and this next time or later the 1st exposure next time control relevant aperture portion f-number during read control period and overlap with the said the 1st at least in part.
3. camera head according to claim 1 is characterized in that,
This camera head also has photoflash lamp portion, and it is luminous that this photoflash lamp portion carries out photoflash lamp,
Said photography conditions determination section has photoflash lamp luminous quantity determination section; This photoflash lamp luminous quantity determination section makes in the control period said photoflash lamp portion carry out luminous in advance in said the 2nd exposure; According to reading the picture signal that control is read through the said the 2nd; The photoflash lamp luminous quantity of decision main light emission is as controlling relevant photography conditions with next time or the 1st later exposure of next time
Carry out between continuous 2 times the 1st exposure control said luminous in advance be under 1 time the situation; Carry out said main light emission luminous preparation during read control period and overlap with the said the 1st at least in part; In advance luminous at this is under the situation more than 2 times, carry out the 2nd time or the 2nd time later said luminous in advance or said main light emission luminous preparation during read control period and overlap with the said the 1st at least in part.
4. camera head according to claim 1 is characterized in that,
This camera head also has camera lens part, and this camera lens part is imaged onto shot object image on the said imaging apparatus, can adjust the focusing position,
Said photography conditions determination section has focusing conditional decision portion; This focusing conditional decision portion moves the focusing position of said camera lens part after said the 1st exposure control finishes; And according to reading the picture signal that control is read through the said the 2nd; Decision becomes the focusing position of this camera lens part of focusing position, as controlling relevant photography conditions with next time or the 1st later exposure of next time
Be used to determine said focusing position said camera lens part the focusing position change, or the change of the focusing position of the camera lens part relevant with later the 1st exposure control of this next time or next time read control period and overlap with the said the 1st at least in part.
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| JP2012147187A (en) | 2012-08-02 |
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