CN106791461A - A kind of exposal control method, exposure control circuit and mobile terminal - Google Patents
A kind of exposal control method, exposure control circuit and mobile terminal Download PDFInfo
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- CN106791461A CN106791461A CN201611062946.6A CN201611062946A CN106791461A CN 106791461 A CN106791461 A CN 106791461A CN 201611062946 A CN201611062946 A CN 201611062946A CN 106791461 A CN106791461 A CN 106791461A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
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Abstract
A kind of exposal control method, exposure control circuit and mobile terminal are the embodiment of the invention provides, methods described is applied to mobile terminal, including：In exposure process, the exposure parameter of the different passages of each pixel in the cmos sensor of mobile terminal is obtained respectively；According to the exposure parameter, the different passages to each pixel are exposed control respectively, solve the problems, such as in the prior art due to passage portion to still carry out exposure after saturation is reached and make photon spill into other passages of side cause to expose occur it is not linear, avoid the interference between each pixel in exposure process, it is ensured that sensor is obtained in that best speed.
Description
Technical field
The present embodiments relate to communication technical field, more particularly to a kind of exposal control method, exposure control circuit and
Mobile terminal.
Background technology
CMOS (Complementary Metal-Oxide-Semiconductor sensor, CMOS half
Conductor) sensor, due to advantages such as the Pixel Dimensions that possess sensitivity higher, shorter time for exposure and increasingly reduce, obtains
It is widely applied.The operation principle of cmos sensor is：When ambient is irradiated to pel array, it may occur that photoelectricity is imitated
Should, so as to produce corresponding electric charge in pixel cell.In order to allow cmos sensor to induce color, can be in each picture
Optical filter is added on element.At present, the use of more pel array is that Bayer (Bayer) arranges RGrGbB (red green and green indigo plant, arrangement
Order can be various).
At present, cmos sensor realizes that roller shutter type exposes by row control signal, i.e. a line a line exposes successively.Often go
The time for exposure of different pixels is identical, and is also the same time to be kept in, transmitted, and carries out ADC (Analog-to-
Digital Converter, A-D converter) conversion etc..But, when ambient light is sufficient, the electronics collected by pixel
The scope that its potential well can be accommodated can be exceeded, cause unnecessary electrons to spill into the pixel of surrounding, produce halation
(Blooming) phenomenon.Because G (Green, green), two kinds of colors of R (Red, red) can reach prior to B (Blue, blue)
Saturation, therefore, under the identical time for exposure, the photon collected after G, R saturation can only spill into the channel B on side, cause B to lead to
The exposure in road occurs not linear.
In order to avoid above mentioned problem, in the prior art by using addition Anti-Blooming (suppression halation) circuits or
Person adds divider wall to improve halo problem between pixel.Although addition Anti-Blooming circuits or addition divider wall can be with
The photon between pixel is avoided to disturb and overflow, but in nowadays pixel more and more higher, and under the less and less demand of sensor area,
Increasing the isolation between pixel will certainly reduce the area of each pixel, the overall photosensitive property of influence sensor.
The content of the invention
The embodiment of the present invention provides a kind of exposal control method, exposure control circuit and mobile terminal, to solve sensor
Photon interference and the problem overflowed between middle pixel.
In a first aspect, the embodiment of the invention provides a kind of exposal control method, mobile terminal is applied to, including：
In exposure process, the exposure ginseng of the different passages of each pixel in the cmos sensor of mobile terminal is obtained respectively
Number；
According to the exposure parameter, the different passages to each pixel are exposed control respectively.
Second aspect, the embodiment of the present invention additionally provides a kind of exposure control circuit, is applied to mobile terminal, including：
Cmos sensor, the cmos sensor includes at least one pixel, and each pixel includes at least one passage；
The each channel attached row with each pixel drives respectively, is carried out for each passage to each pixel
Spectrum assignment；
Respectively with each channel attached saturation decision circuitry of each pixel, the potential well electric charge for judging each passage
Whether saturation is reached.
The third aspect, the embodiment of the present invention additionally provides a kind of mobile terminal, including：
Acquisition module, in exposure process, during the cmos sensor of mobile terminal is obtained respectively, each pixel is not
With the exposure parameter of passage；
Control module, for the exposure parameter obtained according to the acquisition module, respectively to each pixel
Different passages are exposed control.
So, in embodiments of the present invention, in exposure process, in can respectively obtaining the cmos sensor of mobile terminal
The exposure parameter of the different passages of each pixel, such that it is able to according to the exposure parameter, respectively to described each pixel not
Control is exposed with passage, is solved in the prior art and is still carried out exposure after saturation is reached and make light due to passage portion
Son spills into other passages of side to be caused to expose and not linear problem occurs, it is to avoid dry between each pixel in exposure process
Disturb, it is ensured that sensor is obtained in that best speed.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below by institute in the description to the embodiment of the present invention
The accompanying drawing for needing to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the flow chart of the exposal control method of first embodiment of the invention；
Fig. 2 is the flow chart of the exposal control method of second embodiment of the invention；
Fig. 3 is the connection diagram that a kind of pixel access of the invention drives with row；
Fig. 4 is the connection diagram of saturation decision circuitry of the invention；
Fig. 5 is the block diagram of the exposure control circuit of third embodiment of the invention；
Fig. 6 A are one of block diagrams of mobile terminal of fourth embodiment of the invention；
Fig. 6 B are the two of the block diagram of the mobile terminal of fourth embodiment of the invention；
Fig. 6 C are the three of the block diagram of the mobile terminal of fourth embodiment of the invention；
Fig. 6 D are the four of the block diagram of the mobile terminal of fourth embodiment of the invention；
Fig. 7 is the block diagram of the mobile terminal of fifth embodiment of the invention；
Fig. 8 is the structural representation of the mobile terminal of sixth embodiment of the invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
First embodiment
Reference picture 1, shows the flow chart of the exposal control method of first embodiment of the invention, and methods described is applied to move
Dynamic terminal, specifically may include steps of：
Step 101, in exposure process, obtains the different passages of each pixel in the cmos sensor of mobile terminal respectively
Exposure parameter.
At present, it is all to drive (row driver) control entire row of pixels using row that cmos sensor is, in each row again
Including multiple pixels.Wherein, each pixel is made up of four transistor AND gates, one light sensitive diode, further, four crystal
Pipe can specifically include R passages, Gr passages, Gb passages and channel B again.Passage refers to every a line the inside difference in cmos sensor
Filter set into sensor cluster.
Generally, mainly passed through in exposure process when photographing operation is performed using the mobile terminal of cmos sensor
Row control signal realizes that roller shutter type exposes, i.e., the multiple pixels successively to every a line are exposed, when the row pixel exposure is completed
Afterwards, the multiple pixels in then to next line perform identical exposing operation, until completing the exposure to all pixels.
In embodiments of the present invention, in exposure process, each in the cmos sensor of mobile terminal can respectively be obtained
The exposure parameter of the different passages of pixel.
For example, when the multiple pixels to certain a line are exposed, R leads in can respectively obtaining each pixel of the row
The exposure parameter of road, Gr passages, Gb passages and channel B.
In implementing, the different passages of every a line can respectively be connected different rows and driven, for example, by R passages
Be connected with R-Row driver (driving of red channel row), by Gr passages and Gr-Row driver (driving of green channel row) phase
Even, Gb passages are connected with Gb-Row driver (driving of green channel row), by channel B and B-Row driver (blue channels
Row drives) it is connected, different pixel accesses are controlled respectively so as to be driven by above-mentioned different row.
Step 102, according to the exposure parameter, the different passages to each pixel are exposed control respectively.
In embodiments of the present invention, after the exposure parameter for obtaining each passage, can be according to the different of each passage
Exposure status, perform different spectrum assignments.For example, can exposure when each passage pixel reach saturation state when, stop
Only the passage is exposed.
In embodiments of the present invention, due to each passage being connected with a row driving so that each row drives equal energy
It is enough that individually corresponding passage is controlled, it does not interfere with each other.Therefore, each row drives also can in real time know corresponding leading to
The exposure status in road.
When a certain passage has reached saturation state in exposure process, at this point it is possible to stop the exposure to the passage, such as
Really a certain passage is not up to saturation, then can continue to be exposed the passage, until the passage reaches saturation state.
It should be noted that while stopping exposing to a certain passage, if other passages are still not up to saturation state,
Then need to continue passage to being not up to saturation state to be exposed, until each passage of each pixel in the row reach it is full
With untill.
For example, for the Gr passages in each pixel, Gb passages, R passages and channel B, wherein Gr passages, Gb passages and R
The time that passage reaches saturation will reach time of saturation earlier than channel B, therefore, when Gr passages, Gb passages and R passages reach it is full
And when, just can stop being exposed above-mentioned Gr passages, Gb passages and R passages, now, because channel B is temporarily unsaturated, because
This when channel B also reaches saturation state, just can terminate the exposure to current line, it is necessary to continue to be exposed channel B,
And turn to and proceed exposure to next line.
In embodiments of the present invention, in exposure process, each in the cmos sensor of mobile terminal can respectively be obtained
The exposure parameter of the different passages of pixel, such that it is able to according to the exposure parameter, the difference to each pixel is logical respectively
Road is exposed control, solves in the prior art and is still carried out exposure after saturation is reached and photon is overflow due to passage portion
Go out to other passages of side to cause to expose and not linear problem occur, it is to avoid interference between each pixel in exposure process,
Ensure that sensor is obtained in that best speed.
Second embodiment
Reference picture 2, shows the flow chart of the exposal control method of second embodiment of the invention, and methods described is applied to move
Dynamic terminal, specifically may include steps of：
Step 201, in exposure process, counts the gesture acquired in the different passages of each pixel in cmos sensor respectively
Trap electric charge.
At present, each pixel in cmos sensor can including R passages, Gr passages, Gb passages and channel B etc. four kinds lead to
Road, four kinds of passages can be arranged according to various orders.
Generally, mainly passed through in exposure process when photographing operation is performed using the mobile terminal of cmos sensor
Row control signal realizes that roller shutter type exposes, i.e., the multiple pixels successively to every a line are exposed, when the row pixel exposure is completed
Afterwards, the multiple pixels in then to next line perform identical exposing operation, until completing the exposure to all pixels.
In embodiments of the present invention, each passage in cmos sensor per a line can respectively be connected into a row to drive
It is dynamic, as shown in figure 3, being the connection diagram that a kind of pixel access of the invention drives with row.In figure 3, with R-Row
Driver (driving of red channel row) be connected for R passages, that be connected is Gr with Gr-Row driver (driving of green channel row)
What is be connected is Gb passages for passage and Gb-Row driver (driving of green channel row), with B-Row driver (blue channel rows
Drive) what is be connected is channel B.After the example in using Fig. 3 is respectively by different pixel accesses from different row drive connections,
Enabling to each passage of pixels different in same a line can be controlled separately, so that different pixels and different passages
Between it is separate, do not interfere with each other.
Further, in embodiments of the present invention, each passage can also be respectively and connects a saturation decision circuitry, so that
The saturation decision circuitry being connected with each passage can be respectively adopted, the potential well electricity of each passage in exposure process is counted
Lotus.As shown in figure 4, be the connection diagram of saturation decision circuitry of the invention, specifically, can by a comparator be connected to
The row of respective channel drives and is connected, and forms saturation decision circuitry.
Usually, when particle is moved in certain field of force, a certain limited range internal potential energy of its potential-energy function curve in space
When minimum, shape such as trap, referred to as potential well (well potential).When cmos sensor exposes, each passage is in the potential well
In acquired photon just can turn into potential well electric charge.With each channel attached saturation decision circuitry can real-time statistics go out it is right
The size of the potential well electric charge in the passage answered.
Step 202, judges whether the potential well electric charge of each passage reaches saturation respectively.
In implementing, when the potential well electric charge of a certain passage reaches the threshold value of respective channel, then it is considered that this leads to
The exposure in road has reached saturation state, such that it is able to perform step 204, stops exposing the passage, if the potential well of the passage
Electric charge is not up to the threshold value of respective channel, then it is considered that the exposure of the passage is not up to saturation state, it is necessary to perform step
203, continuation is exposed to the passage.
Step 203, if the potential well electric charge of the passage is not up to saturation, continues to be exposed the passage.
In embodiments of the present invention, after to being not up to the continuation exposure of the passage of saturation state, execution step can be returned to
202, judge whether the potential well electric charge of the passage reaches saturation again.
Step 204, if the potential well electric charge of the passage reaches saturation, stops exposing the passage.
In implementing, driven because each passage is connected to different rows, to control the exposure of each passage,
Therefore, if the potential well electric charge of the passage reaches saturation, the corresponding row of the passage can be closed and is driven, stopped to the passage
It is exposed, to avoid due to continuing to be exposed the passage, and photon is spilt into bypass, causes the not line of exposure
Property.
After each passage in each pixel to every a line terminates exposure, the data output of this line can be arrived
Buffer then proceedes to carry out each passage in next line by the way of in step 201- steps 204 for subsequently using
Exposure.
In embodiments of the present invention, by for each passage increases by a corresponding row driving and saturation is sentenced in cmos sensor
Deenergizing such that it is able to which whether the potential well electric charge for judging respective channel by the saturation decision circuitry reaches threshold value, if so,
Then it is considered that the exposure of the passage has reached saturation state, it is then possible to close the corresponding row of the passage drive, it is right to terminate
The exposure of the passage, it is to avoid continue to expose and make photon be spilled over to bypass, cause the not linear of exposure so that each pixel
Between do not interfere with each other, it is ensured that sensor is obtained in that best speed.
It should be noted that for embodiment of the method, in order to be briefly described, therefore it to be all expressed as a series of action group
Close, but those skilled in the art should know, and the embodiment of the present invention is not limited by described sequence of movement, because according to
According to the embodiment of the present invention, some steps can sequentially or simultaneously be carried out using other.Secondly, those skilled in the art also should
Know, embodiment described in this description belongs to preferred embodiment, the involved action not necessarily present invention is implemented
Necessary to example.
3rd embodiment
Reference picture 5, shows the block diagram of the exposure control circuit of third embodiment of the invention, and the exposure control circuit should
For mobile terminal, the exposure control circuit can realize the thin of the exposal control method in embodiment one to embodiment two
Section, and identical effect is reached, can specifically include following part：
Cmos sensor 501, the cmos sensor 501 includes at least one pixel 502, and each pixel 502 is included extremely
A few passage 503；
The row being connected with each passage 503 of each pixel 502 respectively drives 504, for each pixel 502
Each passage 503 is exposed control；
The saturation decision circuitry 505 being connected with each passage 503 of each pixel 502 respectively, for judging each passage
Whether 503 potential well electric charge reaches saturation.
It should be noted that in Figure 5, illustrate only the row being connected with one of passage 503 and drive 504 and saturation
Decision circuitry 505, according to foregoing description, it should be appreciated by those skilled in the art that in each pixel 502 of cmos sensor 501
Each passage 503 on, should all be connected with row and drive 504 and saturation decision circuitry 505.
In embodiments of the present invention, the row drive 504 be additionally operable to be reached in the potential well electric charge of the passage 502 for being connected it is full
And when, stop exposing the passage.
In embodiments of the present invention, in exposure process, each in the cmos sensor of mobile terminal can respectively be obtained
The exposure parameter of the different passages of pixel, such that it is able to according to the exposure parameter, the difference to each pixel is logical respectively
Road is exposed control, solves in the prior art and is still carried out exposure after saturation is reached and photon is overflow due to passage portion
Go out to other passages of side to cause to expose and not linear problem occur, it is to avoid interference between each pixel in exposure process,
Ensure that sensor is obtained in that best speed.
Fourth embodiment
Reference picture 6A, shows one of block diagram of mobile terminal of fourth embodiment of the invention, in including embodiment three
Exposure control circuit, the details of the exposal control method in embodiment one to embodiment two can be realized, and reach identical
Effect.The mobile terminal 600 can specifically include such as lower module：
Acquisition module 610, in exposure process, obtains each pixel in the cmos sensor of mobile terminal respectively
The exposure parameter of different passages；
Control module 620, for the exposure parameter obtained according to the acquisition module, respectively to described each pixel
Different passages be exposed control.
On the basis of Fig. 6 A, alternatively, reference picture 6B shows the block diagram of the mobile terminal of fourth embodiment of the invention
Two, the acquisition module 610 can specifically include following submodule：
Statistic submodule 611, in exposure process, the different passages of each pixel in cmos sensor being counted respectively
Acquired potential well electric charge.
On the basis of Fig. 6 B, alternatively, reference picture 6C shows the block diagram of the mobile terminal of fourth embodiment of the invention
Three, the statistic submodule 611 can specifically include such as lower unit：
Statistic unit 6111, for the saturation decision circuitry being connected with each passage to be respectively adopted, counts exposed
The potential well electric charge of each passage in journey；
Wherein, each passage is connected to a saturation decision circuitry.
In embodiments of the present invention, the control module 620 can specifically include following submodule：
Whether judging submodule 621, the potential well electric charge for judging each passage respectively reaches saturation；
Control submodule 622, if reaching saturation for the potential well electric charge of the passage, stops exposing the passage；
If the potential well electric charge of the passage is not up to saturation, continue to be exposed the passage.
On the basis of Fig. 6 B, alternatively, reference picture 6D shows the block diagram of the mobile terminal of fourth embodiment of the invention
Four, the control submodule 622 can specifically include such as lower unit：
Closing unit 6221, if reaching saturation for the potential well electric charge of the passage, closes the corresponding row of the passage and drives
It is dynamic；
Wherein, each passage is connected to a line driving.
Mobile terminal 600 can realize each process that mobile terminal is realized in the embodiment of the method for Fig. 1 to Fig. 4, to keep away
Exempt to repeat, repeat no more here.In embodiments of the present invention, in exposure process, the CMOS of mobile terminal can respectively be obtained
The exposure parameter of the different passages of each pixel in sensor, such that it is able to according to the exposure parameter, respectively to it is described each
The different passages of pixel are exposed control, solve and still carry out exposure after saturation is reached due to passage portion in the prior art
Light and photon is spilt into other passages of side cause to expose and not linear problem occur, it is to avoid each picture in exposure process
Interference between element, it is ensured that sensor is obtained in that best speed.
5th embodiment
Fig. 7 is a kind of block diagram of mobile terminal of fifth embodiment of the invention.Mobile terminal 700 shown in Fig. 7 includes：Extremely
Few processor 701, memory 702, at least one network interface 704 and a user interface 703.It is each in mobile terminal 700
Individual component is coupled by bus system 705.It is understood that bus system 705 is used to realize the connection between these components
Communication.Bus system 705 in addition to including data/address bus, also including power bus, controlling bus and status signal bus in addition.But
For the sake of for clear explanation, various buses are all designated as bus system 705 in the figure 7, mobile terminal 700 also includes picture shooting assembly
706, picture shooting assembly 706 includes camera.
Wherein, user interface 703 can include display, keyboard or pointing device (for example, mouse, trace ball
(trackball), touch-sensitive plate or touch-screen etc..
It is appreciated that the memory 702 in the embodiment of the present invention can be volatile memory or nonvolatile memory,
Or may include both volatibility and nonvolatile memory.Wherein, nonvolatile memory can be read-only storage (Read-
OnlyMemory, ROM), programmable read only memory (ProgrammableROM, PROM), Erasable Programmable Read Only Memory EPROM
(ErasablePROM, EPROM), Electrically Erasable Read Only Memory (ElectricallyEPROM, EEPROM) dodge
Deposit.Volatile memory can be random access memory (RandomAccessMemory, RAM), and it is used as outside slow at a high speed
Deposit.By exemplary but be not restricted explanation, the RAM of many forms can use, such as static RAM
(StaticRAM, SRAM), dynamic random access memory (DynamicRAM, DRAM), Synchronous Dynamic Random Access Memory
(SynchronousDRAM, SDRAM), double data speed synchronous dynamic RAM (DoubleDataRate
SDRAM, DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronized links
Dynamic random access memory (SynchlinkDRAM, SLDRAM) and direct rambus random access memory
(DirectRambusRAM, DRRAM).The memory 702 of the system and method for embodiment of the present invention description is intended to include but does not limit
In these memories with any other suitable type.
In some embodiments, memory 702 stores following element, can perform module or data structure, or
Person their subset, or their superset：Operating system 7021 and application program 7022.
Wherein, operating system 7021, comprising various system programs, such as ccf layer, core library layer, driving layer etc. are used for
Realize various basic businesses and process hardware based task.Application program 7022, comprising various application programs, such as media
Player (MediaPlayer), browser (Browser) etc., for realizing various applied business.Realize embodiment of the present invention side
The program of method may be embodied in application program 7022.
In embodiments of the present invention, by the program for calling memory 702 to store or instruction, specifically, can be application
The program stored in program 6022 or instruction, processor 701 are used in exposure process, and the CMOS that mobile terminal is obtained respectively is passed
The exposure parameter of the different passages of each pixel in sensor；According to the exposure parameter, respectively to the difference of each pixel
Passage is exposed control.
The method that the embodiments of the present invention are disclosed can apply in processor 701, or be realized by processor 701.
Processor 701 is probably a kind of IC chip, the disposal ability with signal.In implementation process, the above method it is each
Step can be completed by the instruction of the integrated logic circuit of the hardware in processor 701 or software form.Above-mentioned treatment
Device 701 can be general processor, digital signal processor (DigitalSignalProcessor, DSP), application specific integrated circuit
(ApplicationSpecific IntegratedCircuit, ASIC), ready-made programmable gate array
(FieldProgrammableGateArray, FPGA) or other PLDs, discrete gate or transistor logic
Device, discrete hardware components.Can realize or perform disclosed each method in the embodiment of the present invention, step and box
Figure.General processor can be microprocessor or the processor can also be any conventional processor etc..With reference to the present invention
The step of method disclosed in embodiment, can be embodied directly in hardware decoding processor and perform completion, or use decoding processor
In hardware and software module combination perform completion.Software module may be located at random access memory, and flash memory, read-only storage can
In the ripe storage medium in this area such as program read-only memory or electrically erasable programmable memory, register.The storage
Medium is located at memory 702, and processor 701 reads the information in memory 702, and the step of the above method is completed with reference to its hardware
Suddenly.
It is understood that the embodiment of the present invention description these embodiments can with hardware, software, firmware, middleware,
Microcode or its combination are realized.Realized for hardware, processing unit can be realized in one or more application specific integrated circuits
(ApplicationSpecificIntegratedCircuits, ASIC), digital signal processor
(DigitalSignalProcessing, DSP), digital signal processing appts (DSPDevice, DSPD), programmable logic device
(ProgrammableLogicDevice, PLD), field programmable gate array (Field-ProgrammableGateArray,
FPGA), general processor, controller, microcontroller, microprocessor, other the electronics lists for performing function of the present invention
In unit or its combination.
For software realize, can by perform the module (such as process, function etc.) of function described in the embodiment of the present invention come
Realize the technology described in the embodiment of the present invention.Software code is storable in memory and by computing device.Memory can
To realize within a processor or outside processor.
Optionally, the processor 701 is additionally operable to：In exposure process, each pixel in cmos sensor is counted respectively
Different passages acquired in potential well electric charge.
Optionally, the processor 701 is additionally operable to：The saturation decision circuitry being connected with each passage is respectively adopted, unites
Count the potential well electric charge of each passage in exposure process；Wherein, each passage is connected to a saturation decision circuitry.
Optionally, the processor 701 is additionally operable to：Judge whether the potential well electric charge of each passage reaches saturation respectively；If
The potential well electric charge of the passage reaches saturation, then stop exposing the passage；If the potential well electric charge of the passage is not up to full
With then continue to be exposed the passage.
Optionally, the processor 701 is additionally operable to：If the potential well electric charge of the passage reaches saturation, the passage is closed
Corresponding row drives；Wherein, each passage is connected to a line driving.
Mobile terminal 700 can realize each process of mobile terminal realization in previous embodiment, to avoid repeating, here
Repeat no more.The embodiment of the present invention, in exposure process, can respectively obtain each pixel in the cmos sensor of mobile terminal
Different passages exposure parameter, such that it is able to according to the exposure parameter, the different passages to each pixel enter respectively
Row spectrum assignment, solves in the prior art and is still carried out exposure after saturation is reached and spill into photon due to passage portion
Other passages of side cause to expose and not linear problem occur, it is to avoid the interference between each pixel in exposure process, it is ensured that
Sensor is obtained in that best speed.
Sixth embodiment
Fig. 8 is the structural representation of the mobile terminal of sixth embodiment of the invention.Specifically, the mobile terminal 800 in Fig. 8
Can be mobile phone, panel computer, personal digital assistant (PersonalDigital Assistant, PDA) or vehicle-mounted computer etc..
Mobile terminal 800 in Fig. 8 includes that radio frequency (RadioFrequency, RF) circuit 810, memory 820, input are single
Unit 830, display unit 840, processor 860, voicefrequency circuit 870, WiFi (WirelessFidelity) module 880 and power supply
890, mobile terminal 800 also includes picture shooting assembly 850, and picture shooting assembly 850 includes camera.
Wherein, input block 830 can be used to receive the numeral or character information of user input, and produce and mobile terminal
800 user is set and the relevant signal input of function control.Specifically, in the embodiment of the present invention, the input block 830 can
With including contact panel 831.Contact panel 831, also referred to as touch-screen, can collect user thereon or neighbouring touch operation
(such as user uses the operations of any suitable object or annex on contact panel 831 such as finger, stylus), and according to advance
The formula of setting drives corresponding attachment means.Optionally, contact panel 831 may include touch detecting apparatus and touch controller
Two parts.Wherein, touch detecting apparatus detect the touch orientation of user, and detect the signal that touch operation brings, by signal
Send touch controller to；Touch controller receives touch information from touch detecting apparatus, and is converted into contact coordinate,
Give the processor 860 again, and the order sent of receiving processor 860 and can be performed.Furthermore, it is possible to using resistance-type,
The polytypes such as condenser type, infrared ray and surface acoustic wave realize contact panel 831.Except contact panel 831, input block
830 can also include other input equipments 832, and other input equipments 832 can include but is not limited to physical keyboard, function key
One or more in (such as volume control button, switch key etc.), trace ball, mouse, action bars etc..
Wherein, display unit 840 can be used for display by the information of user input or be supplied to information and the movement of user
The various menu interfaces of terminal 800.Display unit 840 may include display panel 841, optionally, can use LCD or organic hairs
The forms such as optical diode (OrganicLight-EmittingDiode, OLED) configure display panel 841.
It should be noted that contact panel 831 can cover display panel 841, touch display screen is formed, when touch display screen inspection
Measure thereon or after neighbouring touch operation, processor 860 is sent to determine the type of touch event, with preprocessor
860 provide corresponding visual output according to the type of touch event in touch display screen.
Touch display screen includes Application Program Interface viewing area and conventional control viewing area.The Application Program Interface viewing area
And the arrangement mode of the conventional control viewing area is not limited, can be arranged above and below, left-right situs etc. can distinguish two and show
Show the arrangement mode in area.The Application Program Interface viewing area is displayed for the interface of application program.Each interface can be with
The interface element such as the icon comprising at least one application program and/or widget desktop controls.The Application Program Interface viewing area
It can also be the empty interface not comprising any content.The conventional control viewing area be used for show utilization rate control higher, for example,
Application icons such as settings button, interface numbering, scroll bar, phone directory icon etc..
Wherein processor 860 is the control centre of mobile terminal 800, using various interfaces and connection whole mobile phone
Various pieces, by running or performing software program and/or module of the storage in first memory 821, and call storage
Data in second memory 822, perform the various functions and processing data of mobile terminal 800, so as to mobile terminal 800
Carry out integral monitoring.Optionally, processor 860 may include one or more processing units.
In embodiments of the present invention, by call store the first memory 821 in software program and/or module and/
Or the data in the second memory 822, processor 860 is in exposure process, the CMOS of acquisition mobile terminal to be passed respectively
The exposure parameter of the different passages of each pixel in sensor；According to the exposure parameter, respectively to the difference of each pixel
Passage is exposed control.
Optionally, the processor 860 is additionally operable to：In exposure process, each pixel in cmos sensor is counted respectively
Different passages acquired in potential well electric charge.
Optionally, the processor 860 is additionally operable to：The saturation decision circuitry being connected with each passage is respectively adopted, unites
Count the potential well electric charge of each passage in exposure process；Wherein, each passage is connected to a saturation decision circuitry.
Optionally, the processor 860 is additionally operable to：Judge whether the potential well electric charge of each passage reaches saturation respectively；If
The potential well electric charge of the passage reaches saturation, then stop exposing the passage；If the potential well electric charge of the passage is not up to full
With then continue to be exposed the passage.
Optionally, the processor 860 is additionally operable to：If the potential well electric charge of the passage reaches saturation, the passage is closed
Corresponding row drives；Wherein, each passage is connected to a line driving.
It can be seen that, the embodiment of the present invention in exposure process, can respectively obtain each in the cmos sensor of mobile terminal
The exposure parameter of the different passages of pixel, such that it is able to according to the exposure parameter, the difference to each pixel is logical respectively
Road is exposed control, solves in the prior art and is still carried out exposure after saturation is reached and photon is overflow due to passage portion
Go out to other passages of side to cause to expose and not linear problem occur, it is to avoid interference between each pixel in exposure process,
Ensure that sensor is obtained in that best speed.
Those of ordinary skill in the art it is to be appreciated that with reference to disclosed in the embodiment of the present invention embodiment description it is each
The unit and algorithm steps of example, can be realized with the combination of electronic hardware or computer software and electronic hardware.These
Function is performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specialty
Technical staff can realize described function to each specific application using distinct methods, but this realization should not
Think beyond the scope of this invention.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
In embodiment provided by the present invention, it should be understood that disclosed apparatus and method, can be by other
Mode is realized.For example, device embodiment described above is only schematical, for example, the division of the unit, is only
A kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be the INDIRECT COUPLING or communication link of device or unit by some interfaces
Connect, can be electrical, mechanical or other forms.
The unit that is illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be according to the actual needs selected to realize the mesh of this embodiment scheme
's.
In addition, during each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.
If the function is to realize in the form of SFU software functional unit and as independent production marketing or when using, can be with
Storage is in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used to so that a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, ROM, RAM, magnetic disc or CD etc. are various can be with store program codes
Medium.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (12)
1. a kind of exposal control method, is applied to mobile terminal, it is characterised in that including：
In exposure process, the exposure parameter of the different passages of each pixel in the cmos sensor of mobile terminal is obtained respectively；
According to the exposure parameter, the different passages to each pixel are exposed control respectively.
2. method according to claim 1, it is characterised in that described in exposure process, obtains mobile terminal respectively
In cmos sensor the step of the exposure parameter of the different passages of each pixel, including：
In exposure process, the potential well electric charge acquired in the different passages of each pixel in cmos sensor is counted respectively.
3. method according to claim 2, it is characterised in that described in exposure process, counts cmos sensor respectively
In each pixel different passages acquired in potential well electric charge the step of, including：
The saturation decision circuitry being connected with each passage is respectively adopted, the potential well electricity of each passage in exposure process is counted
Lotus；
Wherein, each passage is connected to a saturation decision circuitry.
4. method according to claim 3, it is characterised in that described according to the exposure parameter, respectively to it is described each
The step of different passages of pixel are exposed control, including：
Judge whether the potential well electric charge of each passage reaches saturation respectively；
If the potential well electric charge of the passage reaches saturation, stop exposing the passage；
If the potential well electric charge of the passage is not up to saturation, continue to be exposed the passage.
5. method according to claim 4, it is characterised in that if the potential well electric charge of the passage reaches saturation,
The step of stopping exposes to the passage, including：
If the potential well electric charge of the passage reaches saturation, close the corresponding row of the passage and drive；
Wherein, each passage is connected to a line driving.
6. a kind of exposure control circuit, is applied to mobile terminal, it is characterised in that including：
Cmos sensor, the cmos sensor includes at least one pixel, and each pixel includes at least one passage；
The each channel attached row with each pixel drives respectively, is exposed for each passage to each pixel
Control；
Respectively with each channel attached saturation decision circuitry of each pixel, for judge each passage potential well electric charge whether
Reach saturation.
7. exposure control circuit according to claim 6, it is characterised in that the row drive be additionally operable to it is logical what is connected
When the potential well electric charge in road reaches saturation, stop exposing the passage.
8. a kind of mobile terminal, it is characterised in that including：
Acquisition module, the difference in exposure process, obtaining each pixel in the cmos sensor of mobile terminal respectively is led to
The exposure parameter in road；
Control module, for the exposure parameter obtained according to the acquisition module, respectively to the difference of each pixel
Passage is exposed control.
9. mobile terminal according to claim 8, it is characterised in that the acquisition module, including：
Acquisition submodule, in exposure process, counting respectively acquired in the different passages of each pixel in cmos sensor
Potential well electric charge.
10. mobile terminal according to claim 9, it is characterised in that the acquisition submodule, including：
Statistic unit, for being respectively adopted the saturation decision circuitry being connected with each passage, statistics in exposure process each
The potential well electric charge of passage；
Wherein, each passage is connected to a saturation decision circuitry.
11. mobile terminals according to claim 10, it is characterised in that the control module, including：
Whether judging submodule, the potential well electric charge for judging each passage respectively reaches saturation；
Control submodule, if reaching saturation for the potential well electric charge of the passage, stops exposing the passage；If described logical
The potential well electric charge in road is not up to saturation, then continue to be exposed the passage.
12. mobile terminals according to claim 11, it is characterised in that the control submodule, including：
Closing unit, if reaching saturation for the potential well electric charge of the passage, closes the corresponding row of the passage and drives；
Wherein, each passage is connected to a line driving.
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| CN201611062946.6A CN106791461B (en) | 2016-11-25 | 2016-11-25 | A kind of exposal control method, exposure control circuit and mobile terminal |
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| CN110719412A (en) * | 2019-09-29 | 2020-01-21 | 炬佑智能科技(苏州)有限公司 | Method for controlling exposure time of CMOS image sensor |
| CN112449118A (en) * | 2019-08-29 | 2021-03-05 | 炬佑智能科技(苏州)有限公司 | Method for controlling exposure time of CMOS image sensor |
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| CN106791461B (en) | 2019-10-18 |
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