CN101588448A - A camera device - Google Patents
A camera device Download PDFInfo
- Publication number
- CN101588448A CN101588448A CNA2009101299575A CN200910129957A CN101588448A CN 101588448 A CN101588448 A CN 101588448A CN A2009101299575 A CNA2009101299575 A CN A2009101299575A CN 200910129957 A CN200910129957 A CN 200910129957A CN 101588448 A CN101588448 A CN 101588448A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- signal
- time
- exposure
- photoelectric conversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 46
- 230000009471 action Effects 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 abstract description 29
- 238000009825 accumulation Methods 0.000 abstract 4
- 239000007787 solid Substances 0.000 abstract 2
- 238000003384 imaging method Methods 0.000 description 32
- 239000000758 substrate Substances 0.000 description 10
- 101150100035 MTX1 gene Proteins 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 101100458634 Caenorhabditis elegans mtx-2 gene Proteins 0.000 description 3
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000035755 proliferation Effects 0.000 description 2
- 238000005284 basis set Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
Landscapes
- Transforming Light Signals Into Electric Signals (AREA)
- Solid State Image Pick-Up Elements (AREA)
Abstract
The invention provides a camera device, wherein the camera device is provided with a solid camera component and a exposure time setting part for setting shutter speed (Ts), wherein the solid camera component is provided with a pixel part that arranges pixel into two-dimensional and a second reset part that resets a phoelectric conversion part, wherein the pixel is provided with the phoelectric conversion part, a signal accumulation part, a strobe part that charges electric charge from the phoelectric conversion part to the signal accumulation part, a first reset part that resets the signal accumulation part, and a signal reading part that reads signal from a signal accumulation part; under the condition (S3:yes) that the shutter speed (Ts) is set below the specified time (T0), selects global shutter (S6) of together exposure of all pixel; under the condition (S3:no) that the shutter speed (Ts) is longer than the specified time (T0), selects rolling shutter (S5) of series exposure in every row.
Description
Technical field
The present invention relates to carry out based on the exposure together of whole pixels of solid-state imager and the camera head that exposes successively of every row.
Background technology
MOS type solid-state imager has the photoelectric conversion part that produces the signal corresponding with incident light quantity (for example photodiode (PD) etc.), and the signal that also has a signal that interim maintenance produces by this photoelectric conversion part is accumulated portion's (for example unsteady proliferation part (FD:Floating Diffusion) etc.).
With reference to Fig. 4 of embodiment of the present invention as can be known, PD wherein is for embedding the type (in the example shown in this figure, in P type substrate, embedding the inside that is formed on the p type island region territory that is formed at the wiring layer side as the n-zone) in the substrate, so, can reduce the dark current that produces at this PD.Relative therewith, as shown in Figure 4, FD directly is connected with wiring layer, so, can't reduce dark current.
But in having the MOS type solid-state imager of PD and FD, known have a following mode: the exposure zero hour in every row (or each pixel) and the constantly different shutter mode of end exposure that are called as rolling shutter; With the exposure zero hour in all going and the constantly identical shutter mode of end exposure that are called as global shutter.
With reference to Fig. 6 of embodiment of the present invention as can be known, the treatment step of rolling shutter wherein is: after PD being resetted and begin exposure, the moment that finishes in the regulation time for exposure resets to FD and reads reset noise, pass on electric charge from the FD of PD after resetting, carry out reading of this FD, so, can be suppressed at the influence of the dark current of FD generation minimumly.But the exposure zero hour of this rolling shutter (with the end exposure moment) is different according to every row, so, when the object of high-speed mobile is made a video recording, in the image section generation distortion of this object.
Relative therewith, the treatment step of existing global shutter is: before beginning between exposure period, FD is resetted and read reset noise according to row order, all row begins exposure simultaneously then, after this, finish the moment of exposure simultaneously at whole row and pass on electric charge to FD from PD, between the beginning reading duration after, carry out reading of FD according to the row order.According to this global shutter, exposure zero hour (with end exposure constantly) be all capable identical, so, can not produce the such advantage of distortion even have the object of high-speed mobile made a video recording yet.But, in this global shutter,, FD needs time of (between exposure period+between reading duration) degree till the FD read output signal electric charge from being reset to, so, have to be subjected to significantly the influence of the dark current that produces at FD.
Therefore, for example in TOHKEMY 2008-28517 communique, put down in writing following technology: during in global shutter, after beginning between exposure period, also carry out processing that FD is resetted and reads reset noise, before beginning between reading duration, finish this and handle (with reference to Fig. 5 of embodiment of the present invention).Thus, can shorten as far as possible, be made as degree between reading duration (1 frame period degree), can further be reduced in the noise that dark current that FD produces causes from FD being reset to the time of reading from FD.
But the dark current that is known in the FD generation is big based on the change of temperature.But, in the technology that above-mentioned TOHKEMY 2008-28517 communique is put down in writing, the situation that the noise that does not have special consideration to be caused by dark current changes owing to temperature.Therefore, even the technology of using this communique to put down in writing under the high situation of the temperature of imaging apparatus, also is difficult to effectively reduce the noise that is caused by dark current.
Like this, image fault and these both sides' of noise technology can balance be considered in expectation well, this image fault is owing at synchronization the photoelectric conversion part of whole pixels is not resetted and cause, this noise since the back that is reset from the signal portion of accumulating need the time till the signal charge and accumulate portion's generation dark current at this signal and cause to passing on.
Summary of the invention
The objective of the invention is to, the camera head that can balance reduces the noise that causes by image fault that the time of exposure, difference caused with by dark current well is provided.
Say briefly, camera head of the present invention is chosen in the playback mode of the signal that the photoelectric conversion part of solid-state imager produces according to the time for exposure, it is characterized in that, this camera head has: solid-state imager, this solid-state imager has pixel is arranged in the pixel portions of two-dimentional shape and the 2nd reset portion that following photoelectric conversion part is resetted, this pixel has: photoelectric conversion part, and it produces the signal corresponding with incident light quantity; Signal is accumulated portion, its interim signal that keeps by above-mentioned photoelectric conversion part generation; Gating portion, it passes on the signal that is produced by above-mentioned photoelectric conversion part to the above-mentioned signal portion of accumulating; The 1st reset portion, it resets to the above-mentioned signal portion of accumulating; And signal reads portion, and it reads the signal that above-mentioned signal is accumulated portion, the time for exposure configuration part, and it sets the time for exposure to above-mentioned photoelectric conversion part is accumulated electric charge; The 1st drive division, it is controlled to be by the above-mentioned photoelectric conversion part of above-mentioned the 2nd reset portion to whole pixels and resets together, thus, begin simultaneously in above-mentioned photoelectric conversion part, to accumulate signal, to be accumulated in signal in the above-mentioned photoelectric conversion part by above-mentioned gating portion in the above-mentioned time for exposure is transferred to above-mentioned signal together and accumulates in the portion, then, read by the above-mentioned signal portion of reading and be accumulated in this signal and accumulate signal in the portion; The 2nd drive division, it is controlled to be according to every row and carries out following action successively: by above-mentioned the 2nd reset portion above-mentioned photoelectric conversion part is resetted, thus, beginning is accumulated signal in above-mentioned photoelectric conversion part, to be accumulated in signal in the above-mentioned photoelectric conversion part by above-mentioned gating portion in the above-mentioned time for exposure is transferred to above-mentioned signal and accumulates in the portion, then, read by the above-mentioned signal portion of reading and be accumulated in this signal and accumulate signal in the portion; And selection portion, it compared time for exposure and the stipulated time of being set by configuration part of above-mentioned time for exposure, under the situation of above-mentioned time for exposure below at the appointed time, driving about above-mentioned solid-state imager, select above-mentioned the 1st drive division, under the situation longer of above-mentioned time for exposure than the stipulated time, driving about above-mentioned solid-state imager, select above-mentioned the 2nd drive division, above-mentioned the 1st drive division or above-mentioned the 2nd drive division by being selected by above-mentioned selection portion drive above-mentioned solid-state imager and photograph.
By the explanation of carrying out with reference to appended accompanying drawing described later, can more clearly understand above-mentioned and purpose in addition of the present invention, feature and advantage.
Description of drawings
Fig. 1 is the block diagram of structure that the camera head of embodiments of the present invention 1 is shown.
Fig. 2 is the figure of more detailed structure that the image pickup part of above-mentioned execution mode 1 is shown.
Fig. 3 is the circuit diagram that illustrates in greater detail the structure of the pixel in the pixel portions of imaging apparatus in above-mentioned execution mode 1.
Fig. 4 is the figure that the structure of the pixel in the semiconductor substrate is shown on the substrate thickness direction in above-mentioned execution mode 1.
The sequential chart of the action when Fig. 5 is the global shutter that illustrates in the camera head of above-mentioned execution mode 1.
The sequential chart of the action when Fig. 6 is the rolling shutter that illustrates in the camera head of above-mentioned execution mode 1.
Fig. 7 is illustrated in the camera head of above-mentioned execution mode 1 flow chart of how selecting rolling shutter and global shutter according to the temperature of shutter speed and imaging apparatus.
Fig. 8 is illustrated in the camera head of embodiments of the present invention 2 flow chart of how selecting rolling shutter and global shutter according to the temperature of shutter speed and imaging apparatus.
The line chart of one example of Fig. 9 situation that to be the shutter speed that is illustrated in the above-mentioned execution mode 2 regulation change according to the temperature of imaging apparatus.
Embodiment
Below, with reference to the description of drawings embodiments of the present invention.
[execution mode 1]
Fig. 1～Fig. 7 illustrates embodiments of the present invention 1, and Fig. 1 is the block diagram that the structure of camera head is shown.
As shown in Figure 1, this camera head has: camera lens 1, image pickup part 2, temperature detecting part 3, image processing part 4, display part 5, camera operation portion 7 and camera control part 8.In addition, storage card 6 constitutes and can load and unload with respect to this camera head, so, also can not the intrinsic structure of this camera head.
2 pairs of optical images by the subject of camera lens 1 imaging of image pickup part carry out opto-electronic conversion, as described later, are converted into digital signal and output.
4 pairs of image processing parts carry out various Digital Image Processing (this image processing for example also comprises the compressed and decompressed processing that record-playback uses etc.) from the picture signals of image pickup part 2 outputs.
Camera operation portion 7 is used for carrying out various operation inputs at this camera head.
Then, Fig. 2 is the figure that the more detailed structure of image pickup part 2 is shown.
This image pickup part 2 constitutes to have: as imaging apparatus 11, A/D converter section 12 and the KTC noise remove portion 13 of MOS type solid-state imager formation.
Imaging apparatus 11 wherein constitutes to have: pixel portions 14, CDS portion 15, vertical scanning circuit 16 and horizontal scanning circuit 17.
Pixel portions 14 constitutes a plurality of pixels 18 is arranged in two-dimentional shape.
A/D converter section 12 will be converted to data image signal from the analog picture signal of imaging apparatus 11 outputs.
KTC noise remove portion 13 carries out the processing of KTC noise remove to the data image signal from 12 outputs of A/D converter section when global shutter.
Then, Fig. 3 is the circuit diagram that illustrates in greater detail the structure of the pixel 18 in the pixel portions 14 of imaging apparatus 11.
In Fig. 3, PD is a photoelectric conversion part, and FD keeps the signal of the signal of photoelectric conversion part PD to accumulate portion's (proliferation part floats) temporarily.
Ma is the amplification transistor as enlarging section performance function, constitutes the source follower amplifier by amplifying with transistor Ma with current source VDD on being located at vertical transfer line VTL.The signal that signal is accumulated the FD of portion is exaggerated the amplification with transistor Ma, outputs to vertical transfer line VTL via the selection transistor Mb that reads portion's performance function as signal.Select transistor Mb to be connected with the holding wire SEL that is used to apply strobe pulse.
Mr is as signal being accumulated the FD of portion and amplified the transistor of the 1st reset portion performance function that the input part with transistor Ma resets, and is connected with the holding wire RES that is used to apply the FD reset pulse.In addition, pass on pulse and this transistor Mr applied the FD reset pulse, then not only can accumulate the FD of portion and reset, can also reset to photoelectric conversion part PD simultaneously signal if carry out simultaneously above-mentioned transistor Mtx 1 applied.Therefore, as the transistor Mtx 1 of gating portion with as the combination of the transistor Mr of the 1st reset portion, also can be used as the 2nd reset portion performance function.
Then, Fig. 4 is the figure that the structure of the pixel 18 on the semiconductor substrate is shown on the substrate thickness direction.
In this example shown in Figure 4, use P type substrate as semiconductor substrate.
Photoelectric conversion part PD forms the n-zone, is formed with the p zone in its wiring layer side.And, on this p zone, be connected with holding wire Tx 2.Thus, photoelectric conversion part PD forms embedded type, as mentioned above, can reduce dark current.
Signal is accumulated the FD of portion and is separated predetermined distance and form the n+ zone with photoelectric conversion part PD.This n+ zone is connected with transistor Ma side with amplification.Like this, signal is accumulated the FD of portion and directly is connected with wiring layer, so, be difficult to reduce dark current as mentioned above.
And, on photoelectric conversion part PD and signal are accumulated substrate surface between the FD of portion, form gate electrode, transistor formed Mtx 1.The gate electrode of this transistor Mtx 1 is connected with holding wire Tx 1.
And then the n+ zone of accumulating the FD of portion with the formation signal separates predetermined distance and is formed with other n+ zones.On the latter's n+ zone, be connected with current source VDD.And, on the substrate surface between these two n+ zones, form gate electrode, transistor formed Mr.The gate electrode of this transistor Mr is connected with holding wire RES.
The sequential chart of the action when then, Fig. 5 is the global shutter that illustrates in this camera head.
When global shutter is moved, the moment in that the transistor Mtx 2 of whole pixels of all going ends simultaneously, begin the photoelectric conversion part PD of whole pixels is accumulated electric charge, promptly all the exposure of pixels begins simultaneously.
Then, the transistor Mtx 1 of whole pixels of whole row is applied pass on moment of pulse at the same time, be accumulated in electric charge among the photoelectric conversion part PD of whole pixels and be transferred to signal and accumulate the FD of portion, promptly all the exposure of pixels finishes simultaneously.Here, be shutter speed Ts described later from the time (time for exposure) that begins till the end exposure period between exposure period.
And, enter then between reading duration, be accumulated in signal and accumulate electric charge among the FD of portion via amplifying with transistor Ma and selecting transistor Mb, be transferred to vertical transfer line VTL successively with behavior unit.In addition, between above-mentioned exposure period, finish the time be carved into and be frame period Tf till the moment that finishes between this reading duration.
In the global shutter of carrying out this action, during before the end between above-mentioned exposure period, carry out signal with behavior unit and accumulate resetting of the FD of portion and reading of reset noise.In addition, in this example shown in Figure 5, for do one's utmost to shorten from read reset noise till the read output signal electric charge time and reduce the The noise that causes by dark current, before finishing between exposure period, finish such timing reading of the reset noise of FD and move.And, at this moment, be roughly frame period Tf from reading the time of FD reset noise till the signal charge of reading FD.
The sequential chart of the action when then, Fig. 6 is the rolling shutter that illustrates in this camera head.
When rolling shutter moves, carry out resetting of photoelectric conversion part PD successively with behavior unit.Therefore, the exposure zero hour according to every row difference.
But the time for exposure, (above-mentioned shutter speed Ts) was that whole pixels are identical.
Then, before the timing end of time for exposure with every row, carry out signal and accumulate resetting of the FD of portion and reading of reset noise, in the moment of time for exposure end, be transferred to signal and accumulate the FD of portion being accumulated in electric charge among the photoelectric conversion part PD, and then the electric charge that signal is accumulated the FD of portion is transferred to vertical transfer line VTL, reduces noise by CDS portion 15.
Like this, when rolling shutter, the time for exposure is that whole pixels are identical, but exposure is constantly different according to every row with end exposure the zero hour.
And, when rolling shutter, from reading the time of reset noise till the read output signal electric charge for comparing the almost short time of negligible degree with frame period Tf, so, compare during with global shutter, the The noise that is caused by dark current can be reduced to extremely low level.
Like this, global shutter has the advantage that can not produce by the image fault that the time of exposure, difference caused, but is subjected to the The noise that caused by dark current easily.On the other hand, rolling shutter produces by the image fault that the time of exposure, difference caused, but has the minimum advantage of The noise that is caused by dark current.Therefore, Fig. 7 illustrates the temperature according to shutter speed and imaging apparatus 11, suitably distinguishes to use to have the global shutter of pluses and minuses separately and the example of rolling shutter.
Fig. 7 is illustrated in the camera head flow chart of how selecting rolling shutter and global shutter according to the temperature of shutter speed and imaging apparatus.
After beginning this processing, determine shutter speed Ts, obtain the information (step S1) of the shutter speed Ts that is determined by camera control part 8 according to AE (automatic exposure control) or cameraman's setting.
Then, camera control part 8 detects the temperature of the imaging apparatus 11 of image pickup part 2 substantially by temperature detecting part 3, obtains the information (step S2) of detected temperature P.
Then, camera control part 8 at first compares (step S3) to the shutter speed T0 of obtained shutter speed Ts and regulation.Here, even being hypothesis, the shutter speed T0 of regulation carries out the photography based on rolling shutter, the also distant shutter speed of distortion that on subject, produces.Promptly, when shutter speed fast (among Fig. 6 time for exposure=Ts is short), do not exist between the exposure period of row of upper end side and common moment between the exposure period of the row of lower end side, promptly by the captured image of the row of upper end side be different images constantly by the captured image of the row of lower end side.Relative therewith, when shutter speed slow (among Fig. 6 time for exposure=Ts is long), the moment common between the exposure period of the row of upper end side and between the exposure period of the row of lower end side is elongated, becomes many images that are exposed at synchronization between exposure period.Threshold value when therefore, this differentiation carried out in the shutter speed T0 of afore mentioned rules conduct is set.As the concrete example of the shutter speed T0 of this regulation, can enumerate the situation consistent, with the situation of the half the time unanimity of frame period Tf etc. with frame period Tf, they are the time that calculates according to the frame period.
In this step S3, be judged to be shutter speed Ts for the regulation shutter speed T0 below (promptly, equate with the shutter speed T0 of regulation or than the shutter speed T0 that stipulates shutter speed faster) situation under, the temperature P and the set point of temperature P0 of obtained imaging apparatus 11 compared (step S4).Here, set point of temperature P0 is the following temperature as threshold value: think under carrying out based on the situation of the photography of global shutter (promptly, from time of FD being reset to the electric charge of reading FD as shown in Figure 5, under the situation of the frame period Tf degree of having nothing for it but), the noise that causes by dark current of the degree that generation can not be ignored.Here, near normal temperature, known dark current has every increase by 8 degree of temperature, and it becomes 2 times tendency, and known dark current shot noise has every increase by 8 degree of temperature, and it becomes the tendency of 2 times of √.But, according to the noise that causes by dark current of which kind of degree of the actual generation of temperature, because the type of imaging apparatus and difference, so, experimentize etc. and decide this set point of temperature P0 according to experimental result.
In above-mentioned steps S3, be judged to be shutter speed Ts (promptly greater than the shutter speed T0 that stipulates, the slow shutter speed of shutter speed T0 than regulation) under the situation, perhaps, be judged to be temperature P in above-mentioned steps S4 under the situation more than the set point of temperature P0, camera control part 8 control image pickup parts 2 are so that it carries out the photography (step S5) based on rolling shutter.
On the other hand, be judged to be in above-mentioned steps S4 under the situation of temperature P less than set point of temperature P0, camera control part 8 control image pickup parts 2 are so that it carries out the photography (step S6) based on global shutter.
Like this, camera control part 8 is according to shutter speed Ts, perhaps also controls according to the temperature P of imaging apparatus 11, and decision is carried out still carrying out photography based on global shutter based on the photography of rolling shutter.
In addition, in above-mentioned, be provided as the transistor Mtx 2 of the 2nd reset portion performance function that photoelectric conversion part PD is resetted according to each pixel, but be not limited thereto, for example, can be provided with one by every row, also can every a plurality of pixels be provided with one.
According to this execution mode 1, according to shutter speed Ts, whether the distortion that judgement produces on subject when the photography of carrying out based on rolling shutter is negligible degree, being judged to be is under the situation of negligible degree, carry out photography based on rolling shutter, so, on subject, can produce distortion hardly, can take the minimum image of The noise that causes by dark current.
And then, the distortion that is producing on the subject when being judged to be the photography of carrying out based on rolling shutter according to shutter speed Ts is under the situation of the degree that can not ignore, but the The noise that is caused by dark current when the temperature P according to imaging apparatus 11 is judged to be the photography of carrying out based on global shutter is under the situation of the degree that can not ignore, carry out photography based on rolling shutter, so, even on subject, produce some distortions, also can take the minimum image of The noise that causes by dark current.
And, the distortion that is producing on the subject when being judged to be the photography of carrying out based on rolling shutter according to shutter speed Ts is under the situation of the degree that can not ignore, and the The noise that is caused by dark current when the temperature P according to imaging apparatus 11 is judged to be the photography of carrying out based on global shutter is under the situation of negligible degree, carry out photography based on global shutter, so, can be suppressed at the distortion that produces on the subject on one side, take the The noise little image by dark current cause on one side.
[execution mode 2]
Fig. 8 and Fig. 9 illustrate embodiments of the present invention 2, Fig. 8 is illustrated in the camera head flow chart of how selecting rolling shutter and global shutter according to the temperature of shutter speed and imaging apparatus, the line chart of an example of Fig. 9 situation that to be shutter speed that regulation is shown change according to the temperature of imaging apparatus.
In this execution mode 2, the part identical with above-mentioned execution mode 1 marked same label and omit explanation, difference mainly only is described.
In the present embodiment, make the shutter speed of the regulation of the threshold value of using when selecting rolling shutter still to select global shutter, change according to the temperature of imaging apparatus as decision.
That is, when low temperature, the The noise that is caused by dark current is little, so, be desirably in the photography of also carrying out in the shutter speed scope of low speed more based on global shutter.On the other hand, when high temperature, the The noise that is caused by dark current is big, so even shutter speed (that is, even produce some distortions in image) more fast, also rolling shutter is selected in expectation.
Therefore, Fig. 9 illustrates an example of the situation that the shutter speed that makes regulation changes according to the temperature of imaging apparatus.
In illustrated embodiment, under the temperature of imaging apparatus is situation below about 8 ℃, be set at 1/30 second as the shutter speed of regulation, under the situation more than about 48 ℃, shutter speed as regulation is set at 1/1000 second, and then, in 8 ℃～48 ℃ scope, (for example connect them smoothly, the longitudinal axis of Fig. 9 is the index scale, but in this chart, straight line connects about 8 ℃ following parts and about 48 ℃ above parts).And the temperature dependency of the shutter speed of this regulation for example is stored in the nonvolatile memory in the camera control part 8 as table or numerical expression etc.
Fig. 8 illustrates the shutter speed of using the regulation that changes like this and suitably distinguishes the processing of using rolling shutter and global shutter.
That is, begin this processing after, carry out the processing of above-mentioned steps S1 and step S2, obtain the temperature P of shutter speed Ts and imaging apparatus 11.
Then, camera control part 8 comes the shutter speed T0 (P) of computational rules according to obtained temperature P, judges that obtained shutter speed Ts is whether below the shutter speed T0 of this regulation (P) (step S11).
Here, be judged to be the shutter speed T0 (P) of shutter speed Ts (promptly greater than the regulation that depends on temperature P, the slow shutter speed of shutter speed T0 (P) than regulation) under the situation, the processing that enters step S5, control image pickup part 2 is so that it carries out the photography based on rolling shutter.
On the other hand, depending on below the shutter speed T0 (P) of the regulation of temperature P (promptly being judged to be shutter speed Ts, equate with the shutter speed T0 (P) of regulation or than the shutter speed T0 (P) that stipulates shutter speed faster) situation under, enter the processing of step S6, control image pickup part 2 is so that it carries out the photography based on global shutter.
According to this execution mode 2, can bring into play the effect roughly the same with above-mentioned execution mode 1, and, can carry out finer control according to these two parameters of temperature P of shutter speed Ts and imaging apparatus 11.
In addition, the invention is not restricted to above-mentioned execution mode, the implementation phase, in the scope that does not break away from its purport, can be out of shape and specialize structural element.And,, can form various inventions by 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 then, the structural element in also can the appropriate combination different execution modes.Like this, in the scope that does not break away from inventive concept, can carry out various distortion and application certainly.
Claims (4)
1. camera head, this camera head is chosen in the playback mode of the signal that the photoelectric conversion part of solid-state imager produces according to the time for exposure, it is characterized in that this camera head has:
Solid-state imager, this solid-state imager have pixel are arranged in the pixel portions of two-dimentional shape and the 2nd reset portion that following photoelectric conversion part is resetted, and this pixel has: photoelectric conversion part, and it produces the signal corresponding with incident light quantity; Signal is accumulated portion, the signal that its interim storage is produced by above-mentioned photoelectric conversion part; Gating portion, it passes on the signal that is produced by above-mentioned photoelectric conversion part to the above-mentioned signal portion of accumulating; The 1st reset portion, it resets to the above-mentioned signal portion of accumulating; And signal reads portion, and it reads the signal that above-mentioned signal is accumulated portion,
The time for exposure configuration part, it sets the time for exposure to above-mentioned photoelectric conversion part is accumulated electric charge;
The 1st drive division, it is controlled to be by the above-mentioned photoelectric conversion part of above-mentioned the 2nd reset portion to whole pixels and resets together, thus, begin simultaneously in above-mentioned photoelectric conversion part, to accumulate signal, to be accumulated in signal in the above-mentioned photoelectric conversion part by above-mentioned gating portion in the above-mentioned time for exposure is transferred to above-mentioned signal together and accumulates in the portion, then, read by the above-mentioned signal portion of reading and be accumulated in this signal and accumulate signal in the portion;
The 2nd drive division, it is controlled to be according to every row and carries out following action successively: by above-mentioned the 2nd reset portion above-mentioned photoelectric conversion part is resetted, thus, beginning is accumulated signal in above-mentioned photoelectric conversion part, to be accumulated in signal in the above-mentioned photoelectric conversion part by above-mentioned gating portion in the above-mentioned time for exposure is transferred to above-mentioned signal and accumulates in the portion, then, read by the above-mentioned signal portion of reading and be accumulated in this signal and accumulate signal in the portion; And
Selection portion, it compared time for exposure and the stipulated time of being set by configuration part of above-mentioned time for exposure, under the situation of above-mentioned time for exposure below at the appointed time, driving about above-mentioned solid-state imager, select above-mentioned the 1st drive division, under the situation longer of above-mentioned time for exposure, about the driving of above-mentioned solid-state imager than the stipulated time, select above-mentioned the 2nd drive division
Above-mentioned the 1st drive division or above-mentioned the 2nd drive division by being selected by above-mentioned selection portion drive above-mentioned solid-state imager and photograph.
2. camera head according to claim 1 is characterized in that,
The afore mentioned rules time that compares with the above-mentioned time for exposure of above-mentioned selection portion is the time that calculates according to the frame period.
3. camera head according to claim 1 and 2 is characterized in that,
This camera head also has temperature detecting part, and this temperature detecting part detects the temperature of above-mentioned solid-state imager substantially,
The time for exposure of setting by configuration part of above-mentioned time for exposure afore mentioned rules below the time but by the detected temperature of said temperature test section under the situation more than the setting, driving about above-mentioned solid-state imager, above-mentioned selection portion is selected above-mentioned the 2nd drive division, the time for exposure of setting by configuration part of above-mentioned time for exposure under afore mentioned rules is below the time, by the situation of the detected temperature of said temperature test section less than this setting, about the driving of above-mentioned solid-state imager, above-mentioned selection portion is selected above-mentioned the 1st drive division.
4. camera head according to claim 1 is characterized in that,
This camera head also has temperature detecting part, and this temperature detecting part detects the temperature of above-mentioned solid-state imager substantially,
Above-mentioned selection portion is obtained by the detected temperature of said temperature test section when higher relatively the time than relatively low duration, with time of obtaining as the afore mentioned rules time that compares with the above-mentioned time for exposure.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008135632A JP5139150B2 (en) | 2008-05-23 | 2008-05-23 | Imaging device |
| JP2008-135632 | 2008-05-23 | ||
| JP2008135632 | 2008-05-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101588448A true CN101588448A (en) | 2009-11-25 |
| CN101588448B CN101588448B (en) | 2012-08-29 |
Family
ID=41372491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101299575A Expired - Fee Related CN101588448B (en) | 2008-05-23 | 2009-04-10 | A camera device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5139150B2 (en) |
| CN (1) | CN101588448B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796635A (en) * | 2015-04-20 | 2015-07-22 | 中国航天科技集团公司第九研究院第七七一研究所 | Global reset release control method used for oversized-area-array CMOS (complementary metal-oxide-semiconductor transistor) image sensor |
| CN108419033A (en) * | 2018-03-01 | 2018-08-17 | 上海晔芯电子科技有限公司 | HDR image sensor pixel structure based on inflection point and imaging system |
| CN109922287A (en) * | 2018-05-02 | 2019-06-21 | 思特威电子科技（开曼）有限公司 | Reduce method, the imaging system of the fixed picture noise of image sensor pixel array |
| CN113141470A (en) * | 2021-04-21 | 2021-07-20 | 广州极飞科技股份有限公司 | Image acquisition system, image acquisition method and electronic equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799285B (en) * | 2014-12-18 | 2024-05-14 | 索尼公司 | Image forming apparatus |
| KR102111670B1 (en) * | 2018-08-08 | 2020-05-15 | (주)로닉스 | Camera device and control method with electronic shutter speed preset function for quick response to high illuminant light source operation |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4136958B2 (en) * | 2004-02-05 | 2008-08-20 | 富士フイルム株式会社 | Digital camera and digital camera control method |
| JP2006148456A (en) * | 2004-11-18 | 2006-06-08 | Sanyo Electric Co Ltd | Electronic camera |
| JP4325557B2 (en) * | 2005-01-04 | 2009-09-02 | ソニー株式会社 | Imaging apparatus and imaging method |
| JP4645294B2 (en) * | 2005-05-13 | 2011-03-09 | ソニー株式会社 | Imaging device and power supply method for imaging device |
| JP2007028337A (en) * | 2005-07-19 | 2007-02-01 | Canon Inc | Imaging apparatus and control method therefor, program, and recording medium |
| JP4844305B2 (en) * | 2005-09-12 | 2011-12-28 | 日本ビクター株式会社 | Imaging device |
| JP2008011298A (en) * | 2006-06-30 | 2008-01-17 | Fujitsu Ltd | Solid-state imaging apparatus and control method therefor |
| JP4789767B2 (en) * | 2006-09-28 | 2011-10-12 | キヤノン株式会社 | Imaging apparatus and control method thereof |
| JP4870528B2 (en) * | 2006-11-17 | 2012-02-08 | オリンパス株式会社 | Solid-state imaging device |
-
2008
- 2008-05-23 JP JP2008135632A patent/JP5139150B2/en not_active Expired - Fee Related
-
2009
- 2009-04-10 CN CN2009101299575A patent/CN101588448B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796635A (en) * | 2015-04-20 | 2015-07-22 | 中国航天科技集团公司第九研究院第七七一研究所 | Global reset release control method used for oversized-area-array CMOS (complementary metal-oxide-semiconductor transistor) image sensor |
| CN108419033A (en) * | 2018-03-01 | 2018-08-17 | 上海晔芯电子科技有限公司 | HDR image sensor pixel structure based on inflection point and imaging system |
| CN108419033B (en) * | 2018-03-01 | 2020-11-27 | 思特威(上海)电子科技有限公司 | HDR image sensor pixel structure based on inflection point and imaging system |
| CN109922287A (en) * | 2018-05-02 | 2019-06-21 | 思特威电子科技（开曼）有限公司 | Reduce method, the imaging system of the fixed picture noise of image sensor pixel array |
| CN109922287B (en) * | 2018-05-02 | 2021-01-05 | 思特威(上海)电子科技有限公司 | Method for reducing noise of fixed image of pixel array of image sensor and imaging system |
| CN113141470A (en) * | 2021-04-21 | 2021-07-20 | 广州极飞科技股份有限公司 | Image acquisition system, image acquisition method and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009284328A (en) | 2009-12-03 |
| JP5139150B2 (en) | 2013-02-06 |
| CN101588448B (en) | 2012-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101795354B (en) | Imaging pickup apparatus and image pickup method | |
| CN101795345B (en) | Image pickup apparatus and image pickup method | |
| CN104253953B (en) | Photographing element, picture pick-up device and its control method | |
| JP5614993B2 (en) | Imaging apparatus and solid-state imaging device driving method | |
| CN102932590B (en) | Image pickup apparatus | |
| CN101588448B (en) | A camera device | |
| CN101662589A (en) | Image sensing apparatus and control method therefor | |
| EP2704422A1 (en) | Image capture apparatus | |
| CN109474781B (en) | Image pickup apparatus, control method for image pickup apparatus, and recording medium | |
| US11936987B2 (en) | Image capturing apparatus | |
| US10225494B2 (en) | Image capturing apparatus and control method thereof | |
| CN101931745B (en) | Digital camera apparatus | |
| JP2010268079A (en) | Imaging apparatus and method for manufacturing the imaging apparatus | |
| JP6460669B2 (en) | Imaging device | |
| JP2010028488A (en) | Imaging apparatus and control method for the same | |
| JP2009171027A (en) | Imaging apparatus | |
| JP4272095B2 (en) | Imaging device | |
| JP5258372B2 (en) | Imaging apparatus and control method thereof | |
| JP2008118378A (en) | Photographing device and its driving method | |
| CN104469142A (en) | Image capturing apparatus and control method thereof | |
| JP4551935B2 (en) | Solid-state imaging device and imaging system | |
| JP4551936B2 (en) | Solid-state imaging device and imaging system | |
| JP5683985B2 (en) | Solid-state imaging device and imaging device | |
| JP2012175331A (en) | Imaging apparatus | |
| JP7329136B2 (en) | Imaging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151125 Address after: Tokyo, Japan Patentee after: OLYMPUS Corp. Address before: Tokyo, Japan Patentee before: Olympus Imaging Corp. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |