CN1318939A - Electronic camera and its exposure method - Google Patents
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- CN1318939A CN1318939A CN00105883.5A CN00105883A CN1318939A CN 1318939 A CN1318939 A CN 1318939A CN 00105883 A CN00105883 A CN 00105883A CN 1318939 A CN1318939 A CN 1318939A
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Abstract
The electronic camera includes an image sensing unit, a lens unit and a control unit. Under the control of the control unit, the image data obtained by the image sensing unit is used in calculation or stored in image memory unit directly for processing by peripheral equipment. While the image sensing unit obtains electronic image data, the control unit can read out electronic image data for photosensing amount judgment and finish the taking and exposure of the electronic image data after the photosensing amount reaches a preset condition.
Description
The present invention relates to a kind of electronic camera and exposure method thereof, especially can provide multiple metering mode to select about a kind of, and with the memory on single exposure and single rank as its final image storing memory, and then reach the electronic camera of quick photography and low-cost purpose.
In recent years, because popularizing of the raising of semiconductor technology and computer, brought up the birth of digital camera, and it does not need egative film, need not wait for and developing and printing and can be with the direct edit-modify on computers of photo, and can cooperate the internet and the various advantages of extensive use, also make digital camera that the trend that replaces traditional camera is arranged gradually.Below do a brief introduction with regard to the structure and the method for conventional digital camera.
Fig. 1 is a kind of formation calcspar of conventional digital camera, and it comprises a lens unit 1, can will wait that the light image signal of taking the photograph object images on the photosensitive surface of image sensing unit 2 by this lens unit 1; One image sensing unit 2, controlled by clock pulse generation unit 6 described later, can with light image signal transition DID through above-mentioned lens unit 1 imaging, and send with certain speed, this speed is controlled by clock pulse generation unit 6, is example with the NTSC system, is 30 pictures of per second, if the resolution of picture is high more, then clock pulse speed also must improve relatively; One control unit 7, it has a synchronous circuit, the picture signal that earlier figures can be sent as sensing cell 2, after Synchronous Processing, send with another speed (speed of camera itself), this control unit 7 also is responsible for the action of magazine each unit of control and the co-ordination between unit and the unit; One first storage element 3 (being also referred to as temporary transient storage element), it must possess literacy at a high speed could receive the picture signal that image sensing unit 2 is sent in real time, therefore usually by the volatile semiconductor storage unit, such as DRAM or SRAM etc. formation, the DID that control unit 7 is exported can be done temporary transient storage; One signal processing unit 4, it is made of DSP (digital processing unit) or R13C high speed processors such as (reduced instruction set computer chips) usually, above-mentioned first storage element, 3 stored DIDs can be further processed, such as color reduction, color correction or image compression etc.; One second storage element 5 (also claiming the permanent storage unit), usually by non-volatile memory element, constitute as EEPROM or Flash RAM, the data that signal processing unit 4 can be finished dealing with are done further to store, even because this type of non-volatile memory element is under the situation that does not have the power supply supply, also can preserve data, so the final storing memory of Chang Zuowei camera; One clock pulse generation unit 6, be responsible for producing and the synchronous clock pulse signal of television image signal (NTSC or PAL), be supplied to above-mentioned image sensing unit 2, make its picture signal of exporting can with the required input signal of TV (with the TV signal of TSC-system formula, each second needs to produce 30 complete picture) synchronously; One shutter release button 8 is controlled by the user, is responsible for trigger control unit 7, with the action of taking pictures; One power-supply unit 9 is responsible for the power supply supply of all unit.
Fig. 2 is the motion flow and the sequential chart of conventional digital camera shown in Figure 1, in order to motion flow and the sequential relationship that conventional digital camera shown in Figure 1 is described.At first, when the user presses shutter release button 8 in the T0 time, control unit 7 meeting telltable clock pulse generation units 6, image sensing unit 2 is carried out the exposure first time with the default time for exposure, and the view data of current exposure gained is stored in (this is for storing for the first time) in first storage element 3, this action spends the time of T1 altogether, is about 1/30 second in the ordinary course of things.Then signal processing unit 4 is according to the brightness that is stored in the view data of first storage element, 3 inside, calculate the suitable time for exposure (be generally and table look-up), this action spends the time of T2 altogether, can there be the length difference this time according to the complexity of the arithmetic speed of the signal processor that camera adopted and decision time for exposure program, is about 1/10 second in the ordinary course of things.Follow control unit 7 telltable clock pulse generation unit 6 again, image sensing unit 2 was carried out exposure for the second time and the view data that obtains is stored in (this serves as to store for the second time) in first storage element 3 with the correct exposure time that had before calculated, this action spends the time of T3 altogether, is about 1/30 second in the ordinary course of things.Then signal processing unit 4 is further handled according to the view data that is stored in first storage element, 3 inside again, as processing such as color reduction, white balance or compressions, and store back (this is storage for the third time) in first storage element 3 once more, this action spends the time of T4 altogether, this time can be according to the arithmetic speed of the signal processor that camera adopted, and the number of image processing program and the length difference is arranged, need 1 second approximately in the ordinary course of things.Last control unit 7 is with the above-mentioned data that are stored in first storage element, 3 inside, move to second storage element 5 (this is the 4th storage), thereby finish complete once photograph action, this action spends the time of T5 altogether, this time T5 looks the writing rate of second storage element and writes data volume and difference arranged, and needs 1.3 seconds approximately in the ordinary course of things.
Fig. 3 is the calcspar of the formation of the another kind of conventional digital camera of an expression.Its basic framework and formation shown in Figure 1 are roughly the same, difference only is to replace signal processing unit 4 with outside integrating circuit 2a, go the view data that is provided of image sensing unit is carried out the measurement of exposure, the resulting the average image brightness of integrating circuit 2a is then read in by control unit 7, obtain the suitable time for exposure according to tabling look-up or calculating again, this kind utilizes outside integrating circuit 2a to carry out the Exposure mode that exposure measures, can finish exposure actions though single exposure can only be carried out, but owing to only obtaining one, control unit 7 represents the average strong and weak signals of general image light source, so only can accomplish the measurement mode of average exposure.
Fig. 4 is the calcspar of the formation of another conventional digital camera of expression.Its basic framework and formation shown in Figure 3 are roughly the same, difference only is not to be to utilize outside integrating circuit 2a, but by other photosensitive circuit 2b, the photosensitive circuit that constitutes of OPTICAL SENSORS such as photo resistance, phototransistor element for example carries out the sensing of image light signals.Wherein, because the signal that these elements also can vary in size to the power degree of inducing of the light source that is taken, read in by control unit 7, obtain the suitable time for exposure according to tabling look-up or calculating again, though the Exposure mode that this kind utilizes outside photosensitive circuit 2b to carry out the exposure measurement also can only carry out single exposure and promptly finish exposure actions, but owing to equally only obtaining one, control unit 7 represents the average strong and weak signals of general image light source, so also only can accomplish the measurement mode of average exposure.
In addition, for example 1990 trying to gain the United States Patent (USP) of announcing June 30 the 4th, 897, the United States Patent (USP) the 5th of the United States Patent (USP) bulletin on August 7th, the 5th, 040, No. 072 1 that No. 732,1991 Augusts 3, order was announced, 043, No. 816 etc., also disclosing has multiple digital camera, yet camera that these patents disclosed and aforementioned various conventional digital camera still can have been summarized following shortcoming:
1) because the image sensing unit 2 of conventional digital camera is to send view data with television image signal speed, and its control unit 7 is based on the consideration of various factors, use its independently clock pulse mostly, different with the clock pulse that clock pulse generation unit 6 is used, so between the circuit of two use different clock (asynchronous), the view data that image sensing unit 2 is sent correctly can be transferred to first storage element 3, conventional digital camera must possess complicated synchronous circuit design and can finish.
2) owing to use a large amount of parts and expend too much power supply; cause consumption of cell power supply to be exceedingly fast (usually under situation about using continuously; can only keep tens of branch kinds to a few hours); so in order to preserve view data effectively; conventional digital camera must adopt non-volatile memory element as its long term storage mediums (i.e. second storage element 5); could reach the purpose that it saves power supply in the mode of cutting off the electricity supply: in addition; the data storing speed (writing rate) of general non-volatile memory element is very slow; often far below the image sensing unit the image output speed; so conventional digital camera must increase a volatility storage unit (i.e. first storage element 3) again; because the data access speed of volatility storage unit is exceedingly fast, and can be enough to receive in real time the view data that image sensing unit 2 is sent.
3) conventional digital camera then must be stored in view data earlier first storage element 3 if desire to carry out photometry in the mode beyond the average metering, again by graphics processing unit 4 according to different metering modes, read in its required view data and judge to carry out exposure; And, a kind of Exposure Metering then also only can be arranged, i.e. average metering if desire only to carry out single exposure.Single exposure mode and multiple metering mode so conventional digital camera can't get both simultaneously.
4) conventional digital camera is taken the time that a static photograph must spend T1-T5, even before being stored in non-volatility memorizer, does not do any processing (time that does not also promptly have T4), generally still greater than more than 2 seconds.This kind action that velocity potential must be taken pictures continuously to the object of fast moving of taking pictures.
The object of the present invention is to provide one can reach than conventional digital camera take pictures faster speed, lower power consumption, lower functions such as manufacturing cost, to reach the electronic camera of the primary demand of taking electronic image with less number of parts.
When another object of the present invention is to provide one to utilize image sensing unit itself to carry out the sensitization of institute's pickup image fast, available various different Exposure Meterings determine its time for exposure, and can once finish exposure actions, and then can provide a quick exposure method of diversified metering mode again to finish the foregoing invention purpose.
Electronic camera of the present invention is achieved in that it comprises: an image storage unit, in order to the stored electrons view data; One image sensing unit in order to receiving the light image signal, and is the electronic image data with the light image conversion of signals that is received; One lens unit will be in order to will wait to take the photograph the image imaging of thing on this image sensing unit; And a control unit, the output in order to this image sensing unit of ACTIVE CONTROL at any time absorbs the electronic image data stores for this image storage unit.
The electronic image data that this image sensing unit is exported are directly to be stored to this image storage unit.
The electronic image data that this image sensing unit is exported are earlier processed in this control unit, are stored to this image storage unit again.
This image sensing unit comprises one can absorb and store the image working area of these electronic image data synchronously in order to the image photosensitive area and that the light image conversion of signals is become the electronic image data, and directly sends or convert to this DID with the selective property of the stored electronic image data in this image working area ground and send.
This control unit can be when this image sensing unit becomes the electronic image data with this light image conversion of signals, synchronous selective reads these electronic image data and carries out the judgement of sensitive volume, and when this sensitive volume reaches a predetermined condition, finish the picked-up of these electronic image data, and finish of the exposure of this electronic camera for this light image signal.
This image storage unit is one to have the storage body of repetitive read-write function.
The exposure mechanism of electronic camera of the present invention is achieved in that it comprises: an image sensing unit in order to receiving the light image signal, and is that the electronic image data are exposed with the light image conversion of signals that is received; One control unit, in order to when this image sensing unit becomes the electronic image data with this light image conversion of signals, synchronous selective reads these electronic image data and carries out the judgement of sensitive volume, and finishes the exposure of this electronic camera for this light image signal when this sensitive volume reaches a predetermined condition.
This image sensing unit comprises one in order to the light image conversion of signals is become the image photosensitive area of electronic image data, and the image working area that can absorb and store these electronic image data synchronously, and this control unit is when this image working area picked-up and storing these electronic image data, synchronously selectivity reads the stored electronic image data in this image working area, and the sensitive volume that carries out these electronic image data is judged, and when this sensitive volume reaches a predetermined condition, finish the picked-up of these electronic image data, and finish the exposure actions of this electronic camera for this light image signal.
It is to change according to the difference of metering mode that this control unit is selected reading of the electronic image data of this image sensing unit, and this predetermined condition also changes according to the difference of metering mode.
The exposure method of electronic camera of the present invention is achieved in that it is to utilize an image sensing unit to receive a light image signal, and be converted into the electronic image data, further control the method for finishing of its exposure actions again with a control unit, it is characterized in that: when this light image conversion of signals being become the electronic image data with this image sensing unit, this control unit promptly synchronously selectivity read the obtained electronic image data in this image sensing unit and carry out the judgement of its sensitive volume, and when this sensitive volume reaches a predetermined condition, finish the picked-up of these electronic image data, and finish of the exposure of this electronic camera for this light image signal.
Wherein reading of the electronic image data of this image sensing unit selected is to change according to the difference of metering mode to this control unit, and this predetermined condition also changes according to the difference of metering mode.Disclosed electronic camera comprises: an image sensing unit in order to receiving the light image signal, and is one to represent the electronic image data of institute's pickup image with the light image conversion of signals that is received; One lens unit is for waiting to take the photograph the image imaging of thing on this image sensing unit; One image storage unit is in order to store this electronic image data; And a control unit, go into or further image processing in order to the output of the view data of controlling each unit; And wherein, the electronic image data that this image sensing unit is converted under the ACTIVE CONTROL at random of this control unit, can be directly by computing or directly be stored to this image storage unit, and in this image storage unit, wait for the processing of external device.
By above-mentioned formation, can save a large amount of view data processing and storage unit, and reduce the manufacturing cost of electronic camera widely.
In a further embodiment, this control unit is after satisfying in the detection time for exposure, initiatively send control signal and give this image sensing unit, carry out computing or store for this image storage unit to this control unit and make it send this view data, and this image sensing unit comprises one in order to the light image conversion of signals is become the image photosensitive area of electronic image data, and the image working area that can absorb and store these electronic image data synchronously, and can the stored selective property of electronic image data ground, this image working area directly read or convert to this DID and read again.
By the foregoing description, to not need as the conventional art a plurality of gate generators of purchasing, and control unit also need not be as the necessary image output speed that cooperates the image sensing unit as the conventional art, receive earlier view data passively, again it is stored in the temporary transient storage element with another kind of speed, and treat further unloading to the permanent storage unit, cooperate the output speed of image sensing unit to receive the next record view data again; Thereby the structure of camera can quite simplify, and the camera manufacturing cost is reduced greatly, and can promote image capture speed.
For finishing another object of the present invention, disclosed exposure method is to utilize an image sensing unit to receive a light image signal, and convert thereof into the electronic image data, again by the control unit exposure method of decision correct exposure time, it is characterized in that: when this light image conversion of signals being become the electronic image data with this image sensing unit, this control unit is that synchronous selective reads the obtained electronic image data in this image sensing unit and carries out the judgement of its sensitive volume, and when this predetermined condition of this sensitive volume, finish the picked-up of these electronic image data, and finish of the exposure of this electronic camera for this light image signal.
By said method, can directly utilize the framework of image sensing unit and control unit itself, when the light image signal is carried out opto-electronic conversion, carry out the exposure control of various metering modes, and do not need to establish in addition photosensitive device, thereby further reduce except the cost that can make camera, and can finish exposure actions with the various exposure modes of the fastest velocity adaptive.
Above-mentioned and other purpose of the present invention, feature, effect will be more obvious by the detailed description of following preferred embodiment with reference to accompanying drawing.
Fig. 1 is the calcspar of the formation of an expression conventional digital camera.
Fig. 2 is the flow process and the sequential chart of the action of expression conventional digital camera shown in Figure 1.
Fig. 3 is the calcspar of the formation of the another kind of conventional digital camera of an expression, and it uses outside integrating circuit to carry out the measurement of exposure.
Fig. 4 is the calcspar of the formation of another conventional digital camera of expression, and it uses outside photosensitive circuit to carry out the measurement of exposure.
Fig. 5 is the calcspar that the structure of the electronic camera formed of an expression one preferred embodiment according to the present invention is formed.
Fig. 6 is the flow process and the sequential chart of the action of the expression electronic camera that forms according to the present invention shown in Figure 5.
Fig. 7 is the calcspar that an expression one is applied to the formation of the image sensing unit in the disclosed electronic camera.
Fig. 8 is the sequential chart of the exposure actions of an expression image sensing unit application shown in Figure 7 under disclosed electronic camera.
At first, as shown in Figure 3, an electronic camera that constitutes according to preferred embodiment of the present invention comprises: a lens unit 10, can will wait that the light image signal of taking the photograph object images on the photosensitive surface of image sensing unit 20 by this lens unit 10; One image sensing unit 20 is exported after will being electronic simulation view data or DID through the light image signal transition of above-mentioned lens unit 10 imagings; One image storage unit 30, can be the storage unit of any rewritable, as semiconductor storage unit DRAM, SRAM, FERAM, numeral or analog semiconductor storage units such as FLASHRAM, EEPROM, or magnetic storage unit, as soft, hard drive etc., or photosensitiveness or magneto-optic, magnetoelectricity storage unit, as CD-ROM device, MO etc., be responsible for storing that above-mentioned image sensing unit 20 export or through the further electronic image data after the processing of control unit 70; One control unit 70 is responsible for action and the order between the unit and the co-ordination of control above-mentioned all unit itself, or the further work of image processing; One shutter release button 80 is responsible for the action of trigger control unit 70 to take pictures; And a power-supply unit 90, be responsible for the power supply supply of all unit.
Then, the action situation of the electronic camera of further finishing according to formation shown in Figure 5 with flowchart text one shown in Figure 6.Shown in the square 201 of Fig. 6, when the use of desiring to carry out electronic camera and after the power-on, camera promptly enters start automatic setting program, each element is reset and ready, and in step 202, wait for the carrying out of photography.When the user when the T0 time is pressed shutter release button 80, control unit 70 can be shown in step 203, remove earlier image sensing unit 20 previous residual image, this operate time, T10 was extremely short, about 1/100000 second promptly enough; Enter step 204 then, carry out new exposure actions, this moment, control unit 70 one side command diagram were carried out exposure actions as sensing cell 20, simultaneously optionally read this image sensing unit 20 according to selected metering mode on the other hand and carry out the electronic image data that opto-electronic conversion is accumulated because of exposing, to calculate the sensitive volume of the electronic image data that read, then in step 205, impose a condition and do one relatively, use and judge whether exposure is enough with the built-in standard exposure amount of selected metering mode.If it is not enough, then keep the exposure actions of step 204, and when reaching suitable cumulative exposure amount, control unit 70 is the exposure circuit of closing image sensing cell 20, in this action, spend the time of T20 altogether, this time T20 can shorten according to the light power of photo environment or increase, and under the environment of general bright light, all is no more than 0.01 second.Afterwards, enter step 206, control unit 70 is finished correct exposure and through converting the view data of electronic signal mode to aforementioned, directly move in the image storage unit 30 by image sensing unit 20, then, return step 202, shutter release button 80 is pressed in another time of wait user, with the action of taking pictures next time, this action spends the time of T30 altogether, and it needs 0.1 second in the ordinary course of things approximately; Wherein, if the advanced row of electronic image data that control unit 70 is finished correct exposure with image sensing unit 20 is further as the image processing of image compression etc., the image storage of restoring unit 30, then T30 can comply with the complexity and the data volume of its image processing, and growth is in various degree arranged.Taking a broad view of the time of a static photograph of above-mentioned shooting, also is the time of T10 to T30, usually must be above 0.2 second.
In addition, in the above-described configuration, image sensor shown in No. the 87113817th, the Taiwan patent application case that this image sensing unit 20 is preferably applied for the present patent application people constitutes, it provides as content reference of the present invention in the lump at this, yet for clarity sake, cooperate Fig. 7 to do a simple declaration at this and with regard to its formation.
As shown in Figure 7, this image sensing unit 20 is a kind of image sensor that reads its electronic image data of exporting passively synchronously for control unit 70 does not need must cooperate the output clock pulse of traditional images sensing cell as conventional art basically.These image sensor 20 inside include analog circuit part 22, and this analog circuit part 22 and differentiation have image photosensitive area 22a and image working area 22b, wherein image photosensitive area 22a can induce relative electronic signal with time length because of the power of irradiation light, passage is between the two controlled by sampling (Sample) signal, when sampling (Sample) when signal is set, the electronic signal of image photosensitive area 22a promptly can be by synchronization replication (picked-up) to the 22b of image working area and temporarily deposit.
A simple microcontroller (for example PIC, 8051 etc.) also can be accepted or complicated signal processor (as DSPRISC etc.) is controlled removing, exposure about electronic image data such as above-mentioned image photosensitive area, image working areas in image sensing unit shown in Figure 7 20, and function such as any big or small picture in the 22b of reading images working area at any time, and can be directly or via the analog-to-digital converter 24 of The built-in export desire the analog or digital view data that is read and stores.
Fig. 8 shows the further action timing diagram of image sensing unit 20 under structure that cooperates Fig. 5 and flow process shown in Figure 6 as shown in Figure 7, and it mainly is to cooperate exposure and storing mode under the control units 70 to do further explanation with regard to image sensing unit 20.As shown in Figure 7, when the user presses shutter release button 80, control unit 70 is promptly set clear signal (Pre-charge signal) and sampled signal (Sample signal) earlier, this clear signal can with the photosensitive area 22a internal cause of image sensing unit 20 previous take a picture residual piclear, because this moment, sampled signal also was set, so the afterimage of working area 22b also can be eliminated in the lump, this action spends the time of T10 altogether, the then setting of control unit 70 cancellation clear signals, but still the setting that keeps sampled signal, its function is equivalent to open the shutter of traditional camera, within the time that this signal is kept (this section period is also referred to as sensitive time), the image photosensitive area of image sensor just can produce photosensitization to the light image signal of image, on the sensitization plane of image sensing unit 20, promptly can adapt to the light signal power of the image that is taken this moment and produce the corresponding electronic signal that varies in size, and constantly accumulation; In addition, when carrying out sensitization, in the control unit 70 image working areas of meeting with image sensing unit 20, according to the metering mode of setting in advance, average metering for example, central authorities' photometry, electronic image data in the image-region that emphasis weighting photometry etc. is determined, after the analog digital conversion, read, and ask its mean value, or the electronic simulation signal of above-mentioned image-region directly read, via as shown in Figure 3 a traditional quadrature circuit 2a, obtain its mean value, last again with the electronic image data and pairing pre-conditioned the comparing of each exposure mode that obtain, up to eligible, promptly stop to set sampled signal, this action spends the time of T20 altogether.Then, control unit 70 moves image sensing unit 20 resultant well-lit view data to image storage unit 30, or after carrying out image processing, control unit 70 is stored to image storage unit 30 more earlier, this action spends the time of T30 altogether, and so only need carry out single exposure can finish the exposure actions of taking pictures.So originally simplifying the electronic camera of structure can begin at the very first time T0 that the user presses shutter release button, add the time T 20 of " single exposure " and finish in time of time T 30 of image storage in the time T 10 of removing afterimage, only need to finish in 0.2 second the action of whole photograph altogether, thus, promptly not having conventional digital camera causes each photo opporunity all greater than 2 seconds shortcoming because of storage that photometry in advance action (double expose as the aforementioned and calculate the correct exposure time) and at least three times must be arranged/read action.
In sum, do not need to use independently clock pulse signal owing to originally simplify the sensing cell of reading images at random that electronic camera adopted of structure itself, its all functions and action all can be simple microcontroller, the control unit institute that constitutes of 8051 grades ACTIVE CONTROL directly for example, and can be fully synchronous with it, so originally simplifying the electronic camera of structure needn't be as traditional camera, must be subjected to television image signal to send the necessary exposure of 30 image frames 30 times each second for reaching, make each time for exposure all can't surpass 1/30 second restriction, and can determine the optimal time for exposure according to the amount of ambient light of reality, again since this at random the interface characteristic of reading images sensing cell be equivalent to general volatile storage, DRAM for example, so it is can accept open-and-shut microcontroller and directly control, and synchronous fully with it.So originally simplifying the electronic camera of structure does not need must provide complicated synchronous circuit as conventional digital camera in order to want correctly reads image data.
Electronic camera and for example shown in Figure 5 constitutes calcspar, because the disclosed electronic camera of simplifying structure only uses few part, so can keep operate as normal with extremely low power consumption, if directly with volatile storage element DRAM as the image storage device, under general room temperature environment, with normal charging update mode and frequency, still can correctly preserve view data reaches more than 30 days and need not change battery, since the function that this is long-time preserves data with and the fast data access rate, not only can save conventional digital camera must adopt cost to be generally the demand of the non-volatile memory element of 3～4 times of volatile storage elements, more can accelerate the speed (explanation as described above of store images data, in the ordinary course of things, take each photo and take T10+T20+T30, add up to be no more than 0.2 second) and easily reach the function of taking pictures continuously.
Claims (11)
1, a kind of electronic camera, it is characterized in that: it comprises: an image storage unit, in order to the stored electrons view data; One image sensing unit in order to receiving the light image signal, and is the electronic image data with the light image conversion of signals that is received; One lens unit will be in order to will wait to take the photograph the image imaging of thing on this image sensing unit; And a control unit, the output in order to this image sensing unit of ACTIVE CONTROL at any time absorbs the electronic image data stores for this image storage unit.
2, electronic camera as claimed in claim 1 is characterized in that: the electronic image data that this image sensing unit is exported are directly to be stored to this image storage unit.
3, electronic camera as claimed in claim 1 is characterized in that: the electronic image data that this image sensing unit is exported are earlier processed in this control unit, are stored to this image storage unit again.
4, electronic camera as claimed in claim 1, it is characterized in that: this image sensing unit comprises one in order to the light image conversion of signals is become the image photosensitive area of electronic image data, and the image working area that can absorb and store these electronic image data synchronously, and directly send or convert to this DID with the selective property of the stored electronic image data in this image working area ground and send again.
5, electronic camera as claimed in claim 4, it is characterized in that: this control unit can be when this image sensing unit becomes the electronic image data with this light image conversion of signals, synchronous selective reads these electronic image data and carries out the judgement of sensitive volume, and when this sensitive volume reaches a predetermined condition, finish the picked-up of these electronic image data, and finish of the exposure of this electronic camera for this light image signal.
6, electronic camera as claimed in claim 1 is characterized in that: this image storage unit is one to have the storage body of repetitive read-write function.
7, a kind of exposure mechanism of electronic camera is characterized in that: it comprises: an image sensing unit in order to receiving the light image signal, and is that the electronic image data are exposed with the light image conversion of signals that is received; One control unit, in order to when this image sensing unit becomes the electronic image data with this light image conversion of signals, synchronous selective reads these electronic image data and carries out the judgement of sensitive volume, and finishes the exposure of this electronic camera for this light image signal when this sensitive volume reaches a predetermined condition.
8, electronic camera as claimed in claim 7, it is characterized in that: this image sensing unit comprises one in order to the light image conversion of signals is become the image photosensitive area of electronic image data, and the image working area that can absorb and store these electronic image data synchronously, and this control unit is when this image working area picked-up and storing these electronic image data, synchronously selectivity reads the stored electronic image data in this image working area, and the sensitive volume that carries out these electronic image data is judged, and when this sensitive volume reaches a predetermined condition, finish the picked-up of these electronic image data, and finish the exposure actions of this electronic camera for this light image signal.
9, electronic camera as claimed in claim 7 is characterized in that: it is to change according to the difference of metering mode that this control unit is selected reading of the electronic image data of this image sensing unit, and this predetermined condition also changes according to the difference of metering mode.
10, a kind of exposure method of electronic camera, it is to utilize an image sensing unit to receive a light image signal, and be converted into the electronic image data, further control the method for finishing of its exposure actions again with a control unit, it is characterized in that: when this light image conversion of signals being become the electronic image data with this image sensing unit, this control unit promptly synchronously selectivity read the obtained electronic image data in this image sensing unit and carry out the judgement of its sensitive volume, and when this sensitive volume reaches a predetermined condition, finish the picked-up of these electronic image data, and finish of the exposure of this electronic camera for this light image signal.
11. electronic camera as claimed in claim 10, it is characterized in that: wherein reading of the electronic image data of this image sensing unit selected is to change according to the difference of metering mode to this control unit, and this predetermined condition also changes according to the difference of metering mode.
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| CN100518252C (en) * | 2006-09-29 | 2009-07-22 | 佳能株式会社 | Image sensing apparatus and control method |
| CN101877768A (en) * | 2009-04-30 | 2010-11-03 | 索尼公司 | Solid state image pickup device and driving method thereof and imaging device |
| CN110187355A (en) * | 2019-05-21 | 2019-08-30 | 深圳奥比中光科技有限公司 | A kind of distance measurement method and depth camera |
| CN111006586A (en) * | 2019-12-12 | 2020-04-14 | 天目爱视（北京）科技有限公司 | Intelligent control method for 3D information acquisition |
| CN111345032A (en) * | 2019-05-15 | 2020-06-26 | 合刃科技（深圳）有限公司 | Image sensor, light intensity sensing system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4897732A (en) * | 1985-09-13 | 1990-01-30 | Canon Kabushiki Kaisha | Electronic camera |
| JPH07114474B2 (en) * | 1987-01-05 | 1995-12-06 | 株式会社東芝 | Electronic still camera |
| US5043816A (en) * | 1988-12-26 | 1991-08-27 | Casio Computer Co., Ltd. | Electronic still camera including photographing timing control |
-
2000
- 2000-04-14 CN CNB001058835A patent/CN100341315C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100518252C (en) * | 2006-09-29 | 2009-07-22 | 佳能株式会社 | Image sensing apparatus and control method |
| CN101877768A (en) * | 2009-04-30 | 2010-11-03 | 索尼公司 | Solid state image pickup device and driving method thereof and imaging device |
| CN111345032A (en) * | 2019-05-15 | 2020-06-26 | 合刃科技（深圳）有限公司 | Image sensor, light intensity sensing system and method |
| CN111345032B (en) * | 2019-05-15 | 2021-12-31 | 合刃科技（深圳）有限公司 | Image sensor, light intensity sensing system and method |
| CN110187355A (en) * | 2019-05-21 | 2019-08-30 | 深圳奥比中光科技有限公司 | A kind of distance measurement method and depth camera |
| CN110187355B (en) * | 2019-05-21 | 2023-07-04 | 奥比中光科技集团股份有限公司 | Distance measurement method and depth camera |
| CN111006586A (en) * | 2019-12-12 | 2020-04-14 | 天目爱视（北京）科技有限公司 | Intelligent control method for 3D information acquisition |
| CN111006586B (en) * | 2019-12-12 | 2020-07-24 | 天目爱视（北京）科技有限公司 | Intelligent control method for 3D information acquisition |
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| CN100341315C (en) | 2007-10-03 |
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