CN107509039A - A kind of image sensing device and image processing method - Google Patents

A kind of image sensing device and image processing method Download PDF

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Publication number
CN107509039A
CN107509039A CN201610421187.1A CN201610421187A CN107509039A CN 107509039 A CN107509039 A CN 107509039A CN 201610421187 A CN201610421187 A CN 201610421187A CN 107509039 A CN107509039 A CN 107509039A
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China
Prior art keywords
block
pixels
exposure
pixel
signal
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CN201610421187.1A
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Chinese (zh)
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CN107509039B (en
Inventor
汪辉
霍书瑶
章琦
汪宁
田犁
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Shanghai Advanced Research Institute of CAS
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Shanghai Advanced Research Institute of CAS
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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
    • H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/50—Control of the SSIS exposure
    • H04N25/57—Control of the dynamic range
    • H04N25/58—Control of the dynamic range involving two or more exposures

Abstract

The present invention, which provides a kind of image sensing device and image processing method, image sensing device, to be included：M block of pixels, wherein, at least two adjacent pixel cells to be exposed are included in block of pixels；M is greater than 0 integer；Block menu member, it is connected respectively with the input, output end of m block of pixels and reset terminal, for the exposure signal exported according to the output end of m block of pixels, the block of pixels of progress pixel exposure processing is determined in m block of pixels, and send reset signal to the reset terminal for the block of pixels for carrying out pixel exposure processing, exposure commencing signal is sent to the input for the block of pixels for carrying out pixel exposure processing, the input of other block of pixels, which is sent, into m block of pixels exposes non-commencing signal.The present invention reduces the stand-by period of pixel cell to be exposed, shortens the time for exposure of all pixel cells to be exposed, improves the frame per second of image sensing device, improves convenient Consumer's Experience in time.

Description

A kind of image sensing device and image processing method
Technical field
The present invention relates to technical field of image processing, more particularly to a kind of image sensing device and image processing method.
Background technology
Technology of Internet of things is considered as the third wave of the world information industry after computer and internet, is new The important directions of one wheel Industrial Revolution and motive force, for tapping new sources of economic growth, promoting industry structure change to upgrade, Efficiency and the level for lifting social management and public services are significant., it is necessary to the sensing for passing through magnanimity in Internet of Things Device carrys out the physical message of the natures such as collecting temperature, humidity, pressure even image.And wherein imaging sensor is because it is adopted The signal of collection is directly perceived, and what can be excavated contains much information, and is widely used.But because application site is open in Internet of Things, using ring Border is complicated and changeable, therefore sensor node is worked with being equipped with the wireless mode of supplying cell more.And under application circumstances, The battery of imaging sensor is not easy to change.Therefore in Internet of Things, completely different with tradition application, low-power consumption becomes CMOS (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor) imaging sensor An urgent demand and significant challenge.
A kind of cmos image sensor of common super low-power consumption is achieved in that using PWM (Pulse Width Modulation, pulse width modulation) pixel.As shown in figure 1, a typical PWM pixel is by photodiode PD, reset transistor MRST, Pixel-level comparator and row level memory composition.The input of Pixel-level comparator is respectively PD node voltages and setting Reference voltage Vref.The input data of row level memory is inputted by the global counter outside pel array.The work of PWM pixels It is as follows to make process：PD nodes are first reset to resetting voltage Vrst, during pixel exposure, PD node capacitors are because of extraneous light intensity Photogenerated current caused by effect and discharge, PD node voltages decline, and Pixel-level comparator compares PD node voltages and VrefBetween Relation, when it is reduced to VrefWhen, the output V of the Pixel-level comparatoroutGeneration saltus step, this skip signal is by controlling row level Memory carries out once " writing " and operated, and preserves the numerical value of current global counter.Now the data in row level memory are to be somebody's turn to do The time for exposure tint quantized value of pixel, pixel is equivalent to since exposure to the time interval its comparator output switching activity The pulse width formed.So, time pulse signal can be converted to light intensity signal by PWM pixels, and then can profit Reflect the power of light intensity signal with the width of time pulse signal.
State in realization when being exposed using the pixel in PWM pixel for pixel arrays, inventor has found to exist following Problem：Pixel in PWM pixel for pixel arrays is exposed to be exposed line by line.After starting exposure per one-row pixels, The strong pixel of light intensity, the voltage signal of reset will quickly reach reference voltage Vref, obtain a time pulse signal, and light intensity Weaker pixel, its voltage signal resetted decline is slower, may be at the end of rolling counters forward, and its resetting voltage has not degraded To reference voltage Vref.So, it is necessary to when the resetting voltage of the most dark pixel of entire row of pixels reaches reference voltage Vref, or It is that rolling counters forward terminates, can just thinks that this journey pixel exposure finishes, carry out the pixel exposure of next line.And in each width picture Every one-row pixels typically can all have dark pixel, cause every a line time for exposure be approximately equal to calculator count the cycle, And then make it that the frame per second of imaging sensor is relatively low, it is more difficult to meet convenient Consumer's Experience requirement in time.
The content of the invention
In view of the above the shortcomings that prior art, it is an object of the invention to provide a kind of image sensing device and image Processing method, it is low for solving the frame per second of imaging sensor in the prior art, asking for timely convenient Consumer's Experience can not be met Topic.
In order to achieve the above objects and other related objects, the present invention provides a kind of image sensing device, including：M pixel Block, wherein, at least two adjacent pixel cells to be exposed are included in the block of pixels；The pixel cell to be exposed includes Input, output end and reset terminal, obtained for being exposed processing to pixel, and according to its own exposure results and input The exposure signal taken, exposure signal to be sent is determined, the exposure signal to be sent is sent by output end；M is greater than 0 Integer；Block menu member, is connected with the input, output end of the m block of pixels and reset terminal, for according to the m respectively The exposure signal of the output end output of individual block of pixels, determine to carry out the block of pixels of pixel exposure processing in the m block of pixels, And the reset terminal of the block of pixels to the progress pixel exposure processing sends reset signal, to the progress pixel exposure processing The input of block of pixels sends exposure commencing signal, into m block of pixels except the block of pixels for carrying out pixel exposure processing it The input of other outer block of pixels, which is sent, exposes non-commencing signal.
In one embodiment of the invention, in the block of pixels input of each pixel cell to be exposed and output end according to Secondary connection forms exposure signal output queue；The input of the exposure signal output queue is the input of the block of pixels, The output end of the exposure signal output queue be the block of pixels output end, the reset terminal of the exposure signal output queue For the reset terminal of the block of pixels.
In one embodiment of the invention, described piece of menu member includes：Control module, block of pixels reset signal obtain mould Block, m switch module；Wherein, control terminal of the output end of the control module respectively with the m switch module is connected；Institute Block of pixels reset signal acquisition module is stated respectively with the first end of the m switch module and the input of the control module to connect Connect；Described piece of menu member be connected respectively with the input, output end of the m block of pixels and reset terminal including：The control mould Output end of the input of block respectively with the m block of pixels is connected, the output end of the control module respectively with the m picture The input connection of plain block；Second end of the reset terminal of the m block of pixels respectively with the m switch module is connected, and one Second end of the reset terminal of individual block of pixels only with a switch module is connected.
In one embodiment of the invention, described piece of menu member also includes：First is electric with gate circuit and m the first NOT gates Road；The input of the control module be connected respectively with the output end of the m block of pixels including：The m block of pixels it is defeated Go out end to be connected with described first with the input of gate circuit respectively, the input of the control module and described first and gate circuit Output end connection；State control module output end be connected respectively with the input of the m block of pixels including：The control mould Input of the output end of block respectively with the m the first not circuits is connected, the output end point of the m the first not circuits Input not with the m block of pixels is connected, and input of the output end of first not circuit only with a block of pixels End connection.
In one embodiment of the invention, described piece of menu member also includes：Global reset switchs, with the control module Input connects, for controlling the open and close of the control module；The block of pixels reset signal acquisition module includes：The One delay submodule, XOR circuit, second delay submodule, the second not circuit, second with gate circuit and OR circuit；Its In, the input of the first delay submodule and the input of the XOR circuit connect with Global reset switch, institute The output end for stating the first delay submodule is connected with the input of the XOR circuit；The output end of the XOR circuit with it is described The input connection of OR circuit；The block of pixels reset signal acquisition module first end with the m switch module respectively And the input connection of the control module, including：The input of the second delay submodule and second defeated with gate circuit Enter end to be connected with the input of the control module, the output end of the second delay submodule and second not circuit Input connects, and the output end of second not circuit is connected with described second with the input of gate circuit, described second and The output end of gate circuit is connected with the input of the OR circuit, and the output end of the OR circuit is opened with the m respectively Close the first end connection of module.
In one embodiment of the invention, the pixel cell to be exposed includes：PWM pixels and the 3rd and gate circuit；Its In, the PWM pixels are connected with the described 3rd with the input of gate circuit.
In one embodiment of the invention, the exposure signal includes：End exposure signal, expose non-end signal.
In one embodiment of the invention, described piece of menu member, specifically for receiving the output of the i-th -1 block of pixels After holding the end exposure signal sent, the determination ith pixel block progress pixel exposure processing in the m block of pixels, and to The reset terminal of the ith pixel block sends reset signal, and sending exposure to the input of the ith pixel block starts letter Number, the input of other block of pixels into m block of pixels in addition to the ith pixel block, which is sent, exposes non-commencing signal； After the output end for receiving the ith pixel block exports end exposure signal, i+1 is determined in the m block of pixels Individual block of pixels carries out pixel exposure processing, until m block of pixels is sequentially completed pixel exposure processing.
In one embodiment of the invention, the array that the pixel cell to be exposed is formed is m*m arrays；The block of pixels In the number of pixel cell to be exposed that includes be m.
Further, the present invention provides a kind of image sensing method, applied to above-mentioned image sensing device, at described image Reason method comprises the following steps：Block menu member receives the end exposure signal that the i-th -1 block of pixels is sent, wherein, i is more than 1 Integer no more than m；Described piece of menu member determines that ith pixel block carries out pixel exposure processing in m block of pixels, and to institute State ith pixel block and send exposure commencing signal and reset signal, other into m block of pixels in addition to ith pixel block The input of block of pixels, which is sent, exposes non-commencing signal；Wherein, exposure commencing signal is that instruction block of pixels is carried out at pixel exposure The signal of reason；The non-commencing signal of exposure is to indicate the signal that block of pixels is handled without pixel exposure；M is pixel to be exposed The line number for the array that unit is formed, it is greater than 0 integer；The ith pixel root tuber is resetted according to the reset signal, and Processing is exposed to pixel according to exposure commencing signal, and after the completion of pixel exposure, exposure is sent to described piece of menu member End signal, described piece is set to select Unit selection i+1 block of pixels to carry out pixel exposure processing, until the m block of pixels is equal Complete pixel exposure processing.
In one embodiment of the invention, the end exposure of the i-th -1 block of pixels transmission is received in described piece of menu member Before signal, described image processing method also includes:Described piece of menu member receives global reset signal；Described piece of menu member according to The global reset signal, reset signal and exposure commencing signal are sent to the 1st block of pixels, and the 1st is removed into m block of pixels The input of other block of pixels outside individual block of pixels, which is sent, exposes non-commencing signal.
As described above, a kind of image sensing device and image processing method of the present invention, have the advantages that：Image Sensing device includes m block of pixels, at least two adjacent pixel cells to be exposed is included in each block of pixels, and pass through block Menu member selects different block of pixels to carry out pixel exposure processing in m block of pixels, it is achieved thereby that in units of block of pixels The pixel exposure that individual element block is carried out to m block of pixels is handled.So, it is bright due to adjacent pixel cell to be exposed It is smaller to spend gap, adjacent pixel cell to be exposed is divided in a block of pixels so that all to be exposed in block of pixels The brightness light and shade gap of pixel cell is small, it is possible to reduce the stand-by period of pixel cell to be exposed in block of pixels, so as to contract The time for exposure of all pixel cells to be exposed in short image sensing device, and then the frame per second of image sensing device is improved, carry High convenient Consumer's Experience in time.
Brief description of the drawings
Fig. 1 is shown as the structural representation of PWM pixels in the prior art.
Fig. 2 is shown as the first structural representation of image sensing device provided by the invention.
Fig. 3 is shown as second of structural representation of image sensing device provided by the invention.
Fig. 4 is shown as the third structural representation of image sensing device provided by the invention.
Fig. 5 is shown as the 4th kind of structural representation of image sensing device provided by the invention.
Fig. 6 is shown as the 5th kind of structural representation of image sensing device provided by the invention.
Fig. 7 is shown as the 6th kind of structural representation of image sensing device provided by the invention.
Fig. 8 is shown as the 7th kind of structural representation of image sensing device provided by the invention.
Fig. 9 is shown as the first method schematic diagram of image sensing method provided by the invention.
Figure 10 is shown as the second method schematic diagram of image sensing method provided by the invention.
Component label instructions
11 block of pixels
12 pixel cells to be exposed
13 pieces of menu members
111 PWM pixels
121 the 3rd and gate circuit
131 control modules
132 block of pixels reset signal acquisition modules
133 switch modules
134 first and gate circuit
135 first not circuits
136 Global resets switch
1321 first delay submodules
1322 XOR circuits
1323 second delay submodules
1324 second not circuits
1325 second and gate circuit
1326 OR circuits
S11~S13 steps
S21~S25 steps
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that in the case where not conflicting, following examples and implementation Feature in example can be mutually combined.
It refer to Fig. 2~Figure 10.It should be noted that the diagram provided in following examples only illustrates in a schematic way The basic conception of the present invention, the component relevant with the present invention is only shown in schema then rather than according to package count during actual implement Mesh, shape and size are drawn, and kenel, quantity and the ratio of each component can be a kind of random change during its actual implementation, and its Assembly layout kenel may also be increasingly complex.
Referring to Fig. 2, the present invention provides a kind of image sensing device, including：
M block of pixels 11.
Wherein, at least two pixel cells 12 to be exposed are included in block of pixels 11.Pixel cell 12 to be exposed includes defeated Enter end, output end and reset terminal, obtained for being exposed processing to pixel, and according to its own exposure results and input Exposure signal, determine exposure signal to be sent, exposure signal to be sent sent by output end.M be greater than 0 it is whole Number.
Block menu member 13, it is connected respectively with the input, output end of m block of pixels 11 and reset terminal, for according to m picture The exposure signal of the output end output of plain block 11, determine to carry out the block of pixels 11 of pixel exposure processing in m block of pixels 11, and Reset signal is sent to the reset terminal for the block of pixels 11 for carrying out pixel exposure processing, to the block of pixels 11 for carrying out pixel exposure processing Input send exposure commencing signal, into m block of pixels 11 except progress pixel exposure processing block of pixels 11 in addition to its The input of his block of pixels 11, which is sent, exposes non-commencing signal.
Wherein, exposure commencing signal is to indicate that block of pixels 11 carries out the signal of pixel exposure processing；The non-commencing signal of exposure It is to indicate the signal that block of pixels 11 is handled without pixel exposure.
Further, exposure signal includes：End exposure signal, expose non-end signal.
It should be noted that m occurrence is relevant with the pixel exposure mode of existing image sensing device.Existing When image sensing device is exposed with the behavior unit of pel array, then m is the row for the array that pixel cell to be exposed is formed Number.And when m is more than 1, it is to be included in block of pixels to include at least two adjacent pixel cells to be exposed in block of pixels Pixel cell to be exposed is the pixel cell to be exposed of adjacent at least two rows in the array that pixel cell to be exposed is formed. When image sensing device is exposed using the row of pel array as unit, then m is the row for the array that pixel cell to be exposed is formed Number.And when m is more than 1, it is to be included in block of pixels to include at least two adjacent pixel cells to be exposed in block of pixels Pixel cell to be exposed is the pixel cell to be exposed of adjacent at least two row in the array that pixel cell to be exposed is formed.At this During the following description of inventive embodiments, the present invention is carried out with existing image sensing device with the behavior unit of pel array During exposure, illustrated exemplified by the line number for the array that m is formed for pixel cell to be exposed.
Specifically, include the array that pixel cell 12 to be exposed is formed in image sensing device, so, by be exposed The array of pixel cell 12 can convert optical signals to electric signal, and processing can be as exposed to pixel.In a width figure As in, the often brightness of the pixel cell to be exposed 12 of row there may be increasing difference, the pixel cell to be exposed 12 as often gone May both there is the brighter pixel cell to be exposed 12 of brightness, and the relatively low pixel cell to be exposed 12 of brightness again be present, cause When the pixel exposure processing of pixel cell 12 to be exposed is carried out with the behavior unit of the array of pixel cell 12 to be exposed, exist The problem of pixel exposure time of pixel cell to be exposed 12 in a row is long.And in piece image, adjacent lines it is to be exposed H-th of the brightness light and shade gap very little of pixel cell 12, the as pixel cell 12 to be exposed of h-th of jth row and the row of jth+1 The brightness light and shade gap of pixel cell 12 to be exposed is smaller, can draw the array of the pixel cell to be exposed 12 in piece image It is divided into the exposure-processed that different block of pixels 11 carries out pixel.Therefore, image sensing device forms pixel cell 12 to be exposed Array be divided into the block of pixels 11 that m contains the pixel cell to be exposed 12 of at least two adjacent lines.An and pixel The number of the pixel cell to be exposed 12 included in block 11 is the line number for the array that pixel cell 12 to be exposed is formed, to be exposed When the line number for the array that pixel cell 12 is formed is more than 1, the pixel cell to be exposed 12 included in each block of pixels 11 is to wait to expose The pixel cell to be exposed 12 at least two adjacent lines in the array that light pixel unit 12 is formed.So relative in technology The array for treating the formation of exposing pixels unit 12 processing is exposed to pixel with behavior unit for, due to block of pixels 11 Number is identical with the line number of the array of pixel cell 12 to be exposed in the prior art, is, the quantity exposed in the present invention is not Become, therefore can not increase exposure when carrying out pixel exposure processing to the pixel cell to be exposed 12 in m block of pixels 11 respectively Light reading times.
Need to illustrate is：J, h are the integer for being less than m more than 0.
Block menu member 13 in image sensing device can determine currently carry out the block of pixels 11 of pixel exposure processing, Realize the pixel exposure of individual element block 11.Because the processing unit to be exposed 12 in each block of pixels 11 is exposed to pixel The time of processing is not fixed, therefore, need to be completed to pixel in the processing unit to be exposed 12 in a block of pixels 11 After exposure-processed, end exposure signal is sent to block menu member 13, to inform that the first 13 current block of pixels 11 of block menu are completed Pixel exposure processing, so as to carrying out the selection of next block of pixels 11.So, in block menu member 13 in m block of pixels 11 After the block of pixels 11 for determining progress pixel exposure processing, exposure commencing signal is sent to the input of this block of pixels 11, to this The reset terminal of block of pixels 11 sends reset signal so that each pixel cell 12 to be exposed in this block of pixels 11 receives reset It after signal, can be resetted, and carry out pixel exposure processing.The input of pixel cell to be exposed 12 in this block of pixels 11 After exposure commencing signal is received, whether each pixel cell 12 to be exposed in this block of pixels 11 can be completed according to itself Pixel exposure processing and the exposure signal that each input obtains, and then determine exposure signal each to be sent.Herein as After each pixel cell to be exposed in plain block 11 completes pixel exposure, this block of pixels 11 can be sent to block menu member 13 to expose Light end signal, and then the selection of block menu member 13 is selected next block of pixels for carrying out pixel exposure in m block of pixels 11 11。
It should be noted that pixel cell to be exposed 12 in block of pixels 11 is after exposure commencing signal is received, true When determining the exposure signal to be sent of itself, the exposure commencing signal of reception can be equal at end exposure signal Reason.As, the pixel cell to be exposed 12 of exposure commencing signal is received after itself pixel exposure terminates, it may be determined that pending The exposure signal sent is end exposure signal.So, if each pixel cell 12 to be exposed in block of pixels 11 receives To the exposure that when exposing commencing signal, each pixel cell 12 to be exposed obtains the exposure commencing signal of reception as input End signal, respective exposure signal to be sent is determined according to pixel exposure processing itself whether is completed.
Further, as shown in figure 3, the input of each pixel cell 12 to be exposed and output end be successively in block of pixels 11 Connection forms exposure signal output queue.The input of exposure signal output queue be block of pixels 11 input, exposure signal The output end of output queue is the output end of block of pixels 11, and the reset terminal of exposure signal output queue is the reset of block of pixels 11 End.
That is, include input, reset terminal and output end, and each block of pixels 11 in processing unit 11 to be exposed In the input of each pixel cell 12 to be exposed be in turn connected to form exposure signal output queue with output end.As, exposing In optical signal output queue, each pixel cell 12 to be exposed is cascaded, that is to say, that for a block of pixels 11, as The output end of h-th of pixel cell 12 to be exposed of plain block 11 is connected with the input of h+1 pixel cells 12 to be exposed, the The output end of h+1 pixel cells 12 to be exposed is connected to form exposure letter with the input of h+2 pixel cells 12 to be exposed Number output queue.Can be using the input of the 1st pixel cell 12 to be exposed of block of pixels 11 as exposure signal output queue Input, using the output end of last pixel cell 12 to be exposed of block of pixels 11 as the defeated of exposure signal output queue Go out end.Because each pixel cell 12 to be exposed is before pixel exposure is carried out, it is both needed to first reset, therefore, exposure signal output The reset terminal of queue is the reset terminal of all pixel cells 12 to be exposed in exposure signal output queue.
The exposure signal and the exposure results of its own that pixel cell 12 to be exposed can obtain according to its input determine Its own exposure signal to be sent.Whether itself exposure results of pixel cell 12 to be exposed refer to pixel cell 12 to be exposed Complete the exposure-processed to pixel.Now, if pixel cell to be exposed 12 has completed the exposure-processed to pixel, and its input The exposure signal of acquisition is end exposure signal, then pixel cell 12 to be exposed determines that exposure signal to be sent is end exposure Signal.If pixel cell 12 to be exposed does not complete the exposure-processed to pixel, and the exposure signal that its input obtains is exposure End signal, then pixel cell 12 to be exposed determine exposure signal to be sent to expose non-end signal.If pixel to be exposed Unit 12 has completed the exposure-processed to pixel, and the exposure signal that its input obtains then is waited to expose to expose non-end signal Light pixel unit 12 determines exposure signal to be sent to expose non-end signal.If pixel cell 12 to be exposed is not completed to picture The exposure-processed of element, and the exposure signal that its input obtains is exposes non-end signal, then pixel cell 12 to be exposed determines Exposure signal to be sent is the non-end signal of exposure., will after pixel cell 12 to be exposed determines exposure signal to be sent Exposure signal to be sent is sent to other units of its output end connection.Each pixel cell 12 to be exposed in block of pixels 11 Input and output end be in turn connected to form exposure signal output queue, when block of pixels 11 carries out pixel exposure, in it Each pixel cell 12 to be exposed proceeds by pixel exposure processing, and k-th of pixel cell 12 to be exposed can basis The exposure signal that the output end of the pixel cell 12 to be exposed of its kth -1 is sent, and the exposure results of itself determine it is to be sent Exposure signal, and sent by output end to the input of+1 pixel cell 12 to be exposed of its kth.Wherein, k be more than 1, Integer less than m.
The input with m block of pixels 11, output end and reset terminal connect block menu member 13 respectively, as block menu member 13 Respectively with the input of the 1st pixel cell 12 to be exposed of exposure signal output queue, exposure signal output queue it is last The output end of one pixel cell 12 to be exposed, and in exposure signal output queue each pixel cell 12 to be exposed reset terminal Connection., can be to this after block menu member 13 selects the current block of pixels 11 for carrying out pixel exposure processing in m block of pixels 11 The reset terminal for carrying out the block of pixels 11 of pixel exposure processing sends reset signal, now this block of pixels for carrying out pixel exposure processing The reset terminal of all pixel cells 12 to be exposed in 11 can receive reset signal, and then be resetted accordingly, and After the completion of reset, each pixel cell 12 to be exposed is exposed processing to pixel.This carries out the block of pixels of processing to be exposed After 11 input receives the exposure commencing signal that block menu member 13 is sent, the block of pixels 11 of processing to be exposed is as carried out After 1st pixel cell 12 to be exposed receives exposure commencing signal, end exposure signal can be equal to, at its own After the exposure-processed for having carried out pixel, it may be determined that exposure signal to be sent is end exposure signal, and end exposure is believed Number sent by output end to the input of the 2nd pixel cell 12 to be exposed.Now, input and the 1st pixel to be exposed Output end the 2nd pixel cell 12 to be exposed treating of connection of unit 12 by its input can get the 1st it is to be exposed The end exposure signal that pixel cell 12 is sent.If the 2nd pixel cell 12 to be exposed completes the exposure-processed of pixel, it is determined that Exposure signal to be sent is end exposure signal, and end exposure signal is sent by output end.Now, input and the 2nd 3rd pixel cell 12 to be exposed of the output end connection of pixel cell 12 to be exposed can get the 2nd by its input The end exposure signal that the output end of individual pixel cell to be exposed 12 is sent.Similarly, the 3rd to last pixel list to be exposed Member 12 determines that the detailed process of exposure signal to be sent and the 2nd pixel cell 12 to be exposed determine exposure signal to be sent Detailed process is the same, will not be repeated here.So, all pixels to be exposed in the block of pixels 11 of processing to be exposed are carried out herein After unit 12 completes pixel exposure processing, this carries out last pixel cell to be exposed of the block of pixels 11 of processing to be exposed 12 output end output end exposure signal, as carry out the output end output end exposure letter of the block of pixels 11 of processing to be exposed Number, now block menu member 13 receives end exposure signal, and then can know that the current block of pixels 11 for being exposed processing is complete Into pixel exposure processing, and then carry out the selection of next block of pixels 11.
Block menu member 13 is sending reset signal to the reset terminal for the block of pixels 11 for carrying out pixel exposure, to progress pixel exposure When the input of the block of pixels 11 of light sends exposure commencing signal, also need into m block of pixels 11 except the picture for carrying out pixel exposure Other block of pixels 11 outside plain block 11, which are sent, exposes non-commencing signal.So, the input of other each block of pixels 11 receives After the non-commencing signal of exposure, the non-end signal of exposure can be equal to, it is now true according to following exposure signals to be sent Fixed process understands that the exposure signal to be sent that each pixel cell 12 to be exposed determines in other each block of pixels 11 is to expose The non-end signal of light, and can be sent by the output end of other each block of pixels 11 to block menu member 13.
Further, block menu member 13, specifically for the exposure knot sent in the output end for receiving the i-th -1 block of pixels After beam signal, determine that ith pixel block 11 carries out pixel exposure processing in m block of pixels 11, and to ith pixel block 11 Reset terminal sends reset signal, sends exposure commencing signal to the input of ith pixel block 11, is removed into m block of pixels 11 The input of other block of pixels 11 outside ith pixel block 11, which is sent, exposes non-commencing signal；Receiving ith pixel block After 11 output end output end exposure signal, determine that i+1 block of pixels 11 is carried out at pixel exposure in m block of pixels 11 Reason, until m block of pixels 11 is sequentially completed pixel exposure processing.
That is, block menu member 13 after the end exposure signal that the i-th -1 block of pixels 11 is sent is received, illustrates the Pixel cell to be exposed 12 in i-1 block of pixels 11 completes pixel exposure processing, and now block menu member 13 can select down One block of pixels 11 carries out pixel exposure processing.Now, block menu member 13 can determine ith pixel in m block of pixels 11 Block 11 carries out pixel exposure processing, and so, block menu member 13 can send exposure to the input of ith pixel block 11 and start letter Number, and send reset signal to the reset terminal of ith pixel block 11.So the reset terminal of ith pixel block 11 can receive Reset signal, now the reset terminal of all pixel cells 12 to be exposed in ith pixel block 11, which can receive, resets letter Number, and then resetted accordingly, and after the completion of reset, processing is exposed to pixel.Input in ith pixel block 11 Termination receives exposure commencing signal, and as the 1st of ith pixel block 11 input of pixel cell 12 to be exposed is receiving exposure After light commencing signal, can be equal with end exposure signal, do not complete the exposure of pixel in the 1st pixel cell 12 to be exposed During light processing, the 1st pixel cell 12 to be exposed determines exposure signal to be sent to expose non-end signal, passes through its output End, which is sent, exposes non-end signal.Now, input is connected the treat the 2nd with the output end of the 1st pixel cell 12 to be exposed The exposure that pixel cell 12 to be exposed can get the 1st transmission of pixel cell 12 to be exposed by its input does not terminate letter Number.No matter whether its own has completed the exposure-processed of pixel for 2nd pixel cell 12 to be exposed, and it is determined to be sent Exposure signal is sent by its output end to expose non-end signal and exposes non-end signal to follow-up pixel cell to be exposed 12.Follow-up pixel cell to be exposed 12 is identical with the exposure signal to be sent that the 2nd pixel cell 12 to be exposed determines, i.e., For due to input receive to expose non-end signal, therefore the output end of follow-up pixel cell to be exposed 12 exports exposure The non-end signal of light.Now, the exposure signal that m block of pixels is sent to block menu member 13 is the non-end signal of exposure, and block selects Unit 13 no longer carries out the selection of next block of pixels 11.
When the 1st pixel cell 12 to be exposed of ith pixel block completes the exposure-processed of pixel, the 1st to be exposed Pixel cell 12 determines that exposure signal to be sent is end exposure signal, and end exposure signal is sent by its output end.This When, it is defeated by its that input is connected the treat the 2nd pixel cell 12 to be exposed with the output end of the 1st pixel cell 12 to be exposed The end exposure signal that the 1st pixel cell 12 to be exposed is sent can be got by entering end.If the 2nd pixel cell 12 to be exposed Complete the exposure-processed of pixel, it is determined that exposure signal to be sent is end exposure signal, and exposure knot is sent by output end Beam signal.Now, input is connected the treat the 3rd pixel cell to be exposed with the output end of the 2nd pixel cell 12 to be exposed 12 can get the end exposure signal of the output end transmission of the 2nd pixel cell 12 to be exposed by its input.Similarly, 3rd detailed process and the 2nd pixel to be exposed that exposure signal to be sent is determined to last pixel cell 12 to be exposed Unit 12 determines that the detailed process of exposure signal to be sent is the same, will not be repeated here.Wait own in ith pixel block 11 After exposing pixels unit 12 completes pixel exposure processing, the output end output end exposure signal of ith pixel block 11.
Block menu member 13 is when selecting ith pixel block 11 to carry out pixel exposure processing, to the defeated of ith pixel block 11 Enter end send exposure commencing signal, and to ith pixel block 11 reset terminal send reset signal while, to other each pixels Block 11 is that other m-1 block of pixels 11 in addition to ith pixel block send the non-commencing signal of exposure, now, other each pictures After the input of plain block 11 receives the non-commencing signal of exposure, the non-end signal of exposure can be equal to, so according to upper State the process that exposure signal to be sent determines to understand, what each pixel cell 12 to be exposed determined in other each block of pixels 11 treats The exposure signal of transmission is the non-end signal of exposure, and is sent by the output end of other each block of pixels 11 to block menu member 13。
All pixel cells 12 to be exposed in the ith pixel block 11 of the selection of block menu member 13 complete the exposure of pixel After processing, the output end of ith pixel block 11 is the output of last pixel cell 12 to be exposed of ith pixel block 11 End output end exposure signal.Because block menu member 13 is connected with the output end of ith pixel block 11, therefore ith pixel block The end exposure signal of the output end output of last of 11 pixel cell 12 to be exposed is sent to block menu member 13, now, Block menu member 13 can select next block of pixels after the end exposure signal of the transmission of ith pixel block 11 is received 11 be the exposure-processed that i+1 block of pixels 11 carries out pixel.Now, block menu member 11 can be to i+1 block of pixels 11 Reset terminal send reset signal, to i+1 block of pixels 11 input send expose commencing signal, so as to i+1 picture Plain block 11 carries out pixel exposure processing.Exposure is sent to the input of other block of pixels 11 in addition to i+1 block of pixels 11 Non- commencing signal.I+1 block of pixels 11 is exposed the process of processing and ith pixel block 11 carries out pixel exposure processing Process is identical, will not be repeated here.Block menu member 13 is after i+1 block of pixels 11 has carried out pixel exposure processing, by upper The method of stating can continue the i-th+2 block of pixels of selection 11 and carry out pixel exposure processing, until m block of pixels is sequentially completed pixel exposure Light processing.
It should be noted that the pixel cell to be exposed 12 in block of pixels 11 can also be connected using other modes, make Block of pixels 11 exports exposure signal.For example, the output end of the pixel cell to be exposed 12 of block of pixels 11 each connects a NOT gate Circuit, and each not circuit output and NAND gate circuit input connect, using the output end of this NAND gate circuit as The output end of block of pixels 11.So, pixel exposure processing is completed in each pixel cell 12 to be exposed in block of pixels 11 Afterwards, end exposure signal is exported, when any one pixel cell 12 to be exposed does not complete pixel exposure processing, output exposes not End signal.Certainly, each pixel cell 12 to be exposed in block of pixels 11 can be connected with other modes, the present invention to this not It is restricted.
Further, the array that above-mentioned pixel cell to be exposed 12 is formed is m*m arrays, now, is included in block of pixels The number of pixel cell 12 to be exposed is m, and the number for the block of pixels that can so ensure to include in image sensing device exposes with waiting The line number or columns for the array that light pixel unit 12 is formed are identical.
It should be noted that the array that above-mentioned pixel cell to be exposed 12 is formed can also be the array of other forms, example Array as pixel cell 12 to be exposed is formed is m*n arrays, the invention is not limited in this regard.
So, because the luminance difference of adjacent pixel cell to be exposed is away from smaller, above-mentioned image sensing device is passed through The pixel cell to be exposed of adjacent lines is divided in a block of pixels so that all pixel cells to be exposed in block of pixels Brightness light and shade gap is small, it is possible to reduce the stand-by period of pixel cell to be exposed in block of pixels, so as to shorten image sensing The time for exposure of all pixel cells to be exposed in device, and then the frame per second of image sensing device is improved, it is convenient in time to improve Consumer's Experience.
Further, as shown in figure 4, pixel cell to be exposed 12 includes：PWM (Pulse Width Modulation, arteries and veins Rush width modulated) pixel 111 and the 3rd and gate circuit 112.
Wherein, PWM pixels 111 are connected with the 3rd with the input of gate circuit 112.
Specifically, because pixel cell 12 to be exposed need to complete the exposure-processed of pixel, need to be obtained again according to input Exposure signal and the exposure results of itself determine exposure signal to be sent.Therefore, the pixel cell to be exposed 12 in the present invention Including：PWM pixels 111 and the 3rd and gate circuit 112.
It should be noted that PWM pixels 111 are PWM pixels 111 of the prior art, its concrete structure can join Fig. 1 institutes Show, the present invention will not be repeated here.
3rd is connected with an input of gate circuit 112 with the output end of the comparator of PWM pixels 111, and another is defeated Enter end to be connected with the output end of the previous pixel cell 12 to be exposed of this pixel cell 12 to be exposed.
It should be noted that the 3rd with the input that the input of gate circuit 112 is pixel cell 12 to be exposed, the 3rd with The output end of gate circuit 112 is the output end of pixel cell 12 to be exposed.
It should be noted that in present aspect embodiment, pixel cell 12 to be exposed gets reset letter by reset terminal Number, carry out reset and refer to, the photodiode PD in PWM pixels 111 in each pixel cell 12 to be exposed gets reset Signal, photodiode PD are accordingly resetted.
Further, as shown in figure 5, above-mentioned piece of menu member 13 includes：Control module 131, block of pixels reset signal obtain Module 132, m switch module 133.
Wherein, control terminal of the output end of control module 131 respectively with m switch module 133 is connected.
Block of pixels reset signal acquisition module 13 is defeated with the first end of m switch module 133 and control module 131 respectively Enter end connection.
Now, block menu member 13 be connected respectively with the input, output end of m block of pixels 11 and reset terminal including：
Output end of the input of control module 131 respectively with m block of pixels 11 is connected, the output end of control module 131 The input with m block of pixels 11 is connected respectively.
Second end of the reset terminal of m block of pixels 11 respectively with m switch module 133 is connected, and block of pixels 11 Second end of the reset terminal only with a switch module 133 is connected.
Specifically, control module 131 is used to determine the block of pixels 11 for carrying out pixel exposure processing, and determining i-th After block of pixels 11, exposure commencing signal is sent to the input of ith pixel block 11, is sent to the input of other block of pixels 11 The non-commencing signal of exposure, and controlling in m switch module 133, the second end be connected with the reset terminal of ith pixel block 11 i-th Individual switch module closure, other switch modules 133 are its in addition to i-th of switch module 133 in m switch module 133 He disconnects switch module 133.So, control module 131 is after i-th of switch module 133 of control closes, i-th of switch The first end of module 133 is connected with block of pixels reset signal acquisition module 132, the second end and the reset terminal of ith pixel block 11 Connection, and block of pixels reset signal acquisition module 132 can get reset signal in first 13 normal work of block menu, because This, when i-th of switch module 133 closes, block of pixels reset signal acquisition module 132 can pass through the reset signal of acquisition I-th of switch module 133 sends to the reset terminal of ith pixel block 11, the reset terminal of ith pixel block 11 and receives reset letter Number, the reset terminal of each pixel cell 12 to be exposed as in ith pixel block 11 can receive reset signal, be answered Position, and carry out pixel exposure processing.After the input of ith pixel block 11 receives exposure commencing signal, ith pixel block 11 Interior each pixel cell 12 to be exposed determines signal to be exposed each to be sent, to be exposed in ith pixel block 11 After pixel cell 12 completes the exposure-processed of pixel, the output end of ith pixel block 11 sends exposure knot to control module 131 Beam signal, now control module 131 can select i+1 block of pixels 11 carry out pixel exposure processing.Control module 131 selects I+1 block of pixels 11 carries out the process of pixel exposure processing and control module 131 selects ith pixel block 11 to carry out pixel exposure The process of light processing is identical, will not be repeated here.
Further, as shown in fig. 6, above-mentioned piece of menu member 13 also includes：First with gate circuit 134 and m the first NOT gates Circuit 135.
The input of control module 131 be connected respectively with the output end of m block of pixels 11 including：M block of pixels 11 it is defeated Go out end to be connected with first with the input of gate circuit 134 respectively, the input of control module 131 and first and gate circuit 134 Output end connects.
The output end of control module 131 be connected respectively with the input of m block of pixels 11 including：Control module 131 exports Input of the end respectively with m the first not circuits 135 be connected, the output ends of individual first not circuits 135 of m respectively with m picture The input connection of plain block 11, and input of the output end of first not circuit 135 only with a block of pixels 11 is connected.
Specifically, exposure signal and exposure commencing signal, exposing non-commencing signal can be represented with data signal, example Such as, end exposure signal and exposure commencing signal are low level signal, " 0 " can be used to represent, expose non-end signal and exposure Non- commencing signal is high level signal, " 1 " can be used to represent.Because the output end of m block of pixels is both needed to the signal hair of output Deliver to control module 131, in order to reduce the design complexities of control module 131, can be set in block menu member 13 first with Gate circuit 134, now, first is connected with the input of gate circuit 134 with the output end of m block of pixels 11, and first and gate circuit 134 output end is connected with the input of control module 131.So, if ith pixel block 11 does not complete pixel exposure processing, Then to first with gate circuit 134 send high level signal, due to other block of pixels 11 output end export be to expose not tying Beam signal is high level signal, so, first to obtain level signal with the input of gate circuit 134 be high level signal, Such first can export high level signal with the output end of gate circuit 134, and now, the input of control module 131 receives High level signal, it can know that ith pixel block 11 does not complete the exposure-processed of pixel.Pixel is completed in ith pixel block 11 After exposure-processed, then to first with gate circuit 134 send low level signal, due to other block of pixels 11 output end export it is equal It is that to expose non-end signal be high level signal, so, first obtains level signal as i-th with the input of gate circuit 134 The low level signal that individual block of pixels 11 is sent, and the high level signal that other block of pixels 11 are sent, such first with gate circuit 134 Output end can export low level signal, now, the input of control module 131 receives low level signal, can know Ith pixel block 11 completes the exposure-processed of pixel, and i+1 block of pixels 11 can be selected to carry out pixel exposure processing.
While connection due to the output end of control module 131 with the control terminal of m switch module 133, also with m pixel The input connection of block 11.And the control terminal of switch module 133 is typically to receive high level signal closure, low level is received Signal disconnects, and the exposure commencing signal that m block of pixels 11 need to receive is low level signal, therefore, in order to reduce control module 131 design complexities, m the first NOT gates are set between the output end of control module 131 and the input of m block of pixels 11 Circuit 135.As, one the first not circuit 135 is set for the input of each block of pixels 11.That is, control mould Input of the output end of block 131 respectively with m the first not circuits 135 is connected.The output end of each first not circuit 135 Only connect the input connection of a block of pixels 11.So, control module 131 is selecting the progress pixel of ith pixel block 11 During exposure-processed, the input for i-th of first not circuits 135 that can be connected to the input with ith pixel block 11, and The control terminal transmission high level signal for i-th of switch module 133 that second end is connected with the reset terminal of ith pixel block 11, i-th After the input of individual first not circuit 135 receives high level signal, its output end output low level signal, and send to the The input of i block of pixels 11.Also, after the control terminal of i-th of switch module 133 receives high level signal, control i-th Switch module 133 closes, and now the first end of i-th of switch module 133 turns on the second end, so, pixel block reset The reset signal that signal acquisition module 132 obtains can be transmitted to the reset terminal of ith pixel block so that in ith pixel block Each pixel cell 12 to be exposed reset, and carry out pixel exposure processing.Also, the 1st in ith pixel block is to be exposed The input of pixel cell 12 can get low level signal, as get exposure commencing signal, and then cause ith pixel The 1st pixel cell 12 to be exposed in block can be determined exposure signal to be sent, make according to the exposure results of its own The exposure signal that can be obtained according to respective input of other pixel cells 12 to be exposed in ith pixel block and itself Exposure results determine respective exposure signal to be sent, be specifically referred to each in above-mentioned ith pixel block 11 treat The specific determination process of the exposure signal of exposing pixels unit 12, will not be repeated here.Control module 131 to other block of pixels The input of other the first not circuits 135 of 11 input connection, and the second end and the reset terminal of other block of pixels 11 connect The control terminal of other switch modules 135 connect sends low level signal.Be connected with the input of other block of pixels 11 other One not circuit 135, as it is connected respectively with the input of other m-1 block of pixels 11 in addition to ith pixel block 11 The input of other m-1 the first not circuits 135 can receive low level signal, now other m-1 the first NOT gate electricity The output end output high level signal on road 135, and each transmit to the input of other m-1 block of pixels 11 each connected. So, the input of other m-1 block of pixels 11 receives high level signal, as receives the non-commencing signal of exposure, So that the output end output of other m-1 block of pixels 11 exposes non-end signal to first and gate circuit 134.Also, the The control terminal for other switch modules 135 that two ends are connected with the reset terminal of other block of pixels 11, as the second end respectively with other The control terminal of other m-1 switch modules 135 of the reset terminal connection of m-1 block of pixels 11 receives low level signal, due to The control terminal of other m-1 switch modules 135 receives low level signal, therefore the control terminal of other m-1 switch modules 135 Other m-1 switch modules 135 are each controlled to disconnect, the first end of as other m-1 switch modules 135 is broken with the second end Open, the reset signal that block of pixels reset signal acquisition module 132 obtains is not transferred to the reset of other m-1 block of pixels 11 End, therefore each pixel cell 12 to be exposed in other m-1 block of pixels 11 is handled without pixel exposure.It is achieved thereby that Ith pixel block 11 is carried out pixel exposure processing, as realize the m block-by-block of block of pixels 11 and carry out pixel exposure processing.
It should be noted that exposure signal and exposure commencing signal, expose non-commencing signal and other signal tables can be used Show, the invention is not limited in this regard.
Further, as shown in fig. 7, above-mentioned piece of menu member 13 also includes：
Global reset switch 136, be connected with the input of control module 131, for control control module 131 unlatching and Close.
Block of pixels reset signal acquisition module 132 includes：First delay submodule 1321, XOR circuit 1322, second prolongs When submodule 1323, the second not circuit 1324, second with gate circuit 1325 and OR circuit 1326.Wherein,
The input of first delay submodule 1321 and the input of XOR circuit 1322 connect with Global reset switch 136 Connect, the output end of the first delay submodule 1321 is connected with the input of NOR gate circuit 1322；The output of XOR circuit 1322 End is connected with the input of OR circuit 1326.
Block of pixels reset signal acquisition module 132 respectively with the first end of m switch module 133 and control module 131 Input connects, including：
The input of second delay submodule 1323 and second defeated with the input of gate circuit 1325 and control module 131 Enter end connection, the output end of the second delay submodule 1323 is connected with the input of the second not circuit 1324, the second NOT gate electricity The output end on road 1324 is connected with second with the input of gate circuit 1325, and second is electric with the output end and OR gate of gate circuit 1325 The input connection on road 1322, the first end of the output end of OR circuit 1322 respectively with m switch module 133 are connected.
Specifically, the open and close of the control control module 131 of Global reset switch 136.Do not worked in control module 131 When, Global reset switch 136 can send low level signal to control module 131 so that control module 131 is receiving the overall situation After the low level signal that reset switch 136 is sent, control module 131 exports low level signal by output end, and then causes m Block of pixels 11 does not work.When needing control module 131 to start working, Global reset switch 136 is sent to control module 131 High level signal, after control module 131 receives the high level signal that Global reset switch 136 is sent, proceed by block of pixels 11 selection.
It should be noted that it can be user that control module 131, which selects the order of the progress pixel exposure processing of block of pixels 11, Pre-set, the present invention is without limitation.
Because block of pixels reset signal acquisition module 132 is used to obtain reset signal, in order to not increase extra device, When the control control module 131 of Global reset switch 136 works, Global reset switch 136 can obtain to block of pixels reset signal Module 132 sends reset signal.Therefore, the input and XOR electricity of the delay submodule 1321 of Global reset switch 136 and first The input connection on road 1322, so as to which the reset signal of Global reset switch 136 is sent to the one of XOR circuit 1322 Individual input, and the reset signal of Global reset switch 136 is sent to XOR by the delay of the first delay submodule 1321 Another input of circuit 1322, so that the output end of XOR circuit 1322 exports reset signal to OR circuit 1326 An input.In the present invention, worked initially in control module 131, control module 131 selects the 1st block of pixels 11 to enter The processing of row pixel exposure.Each pixel cell 12 to be exposed in the 1st block of pixels 11 has carried out pixel exposure before processing, m For the signal of the output end output of individual block of pixels to expose non-end signal, this signal is high level signal.Due to the second delay The input of module 1323 and second it is connected with input of the input of gate circuit 1325 with control module 131, this When, the input of control module 131 receives the first high level signal exported with gate circuit 134, therefore the second delay submodule The input of block 1323 and second receive high level signal, the second delay submodule with an input of gate circuit 1325 After 1323 receive high level signal, its output end is connected with the input of the second not circuit 1323, therefore the second delay The high level signal of reception can be sent to the second not circuit 1323, the second not circuit 1323 and export low electricity by module 1323 Ordinary mail number, and another input sent to second and gate circuit 1325.Now, second low level is exported with gate circuit 1325 Signal to OR circuit 1326 another input, now OR circuit 1326 reset signal and low is received by input Level signal, OR circuit 1326 export reset signal.Due to OR circuit 1326 output end respectively with m switch module 133 first end connection, therefore, after control module 131 controls the 1st switch module 133 to close, the 1st switch module 133 Reset signal can be sent to the reset terminal of the 1st block of pixels 11.
Because Global reset switch 136 is after control control module 131 works, its signal exported no longer changes, High level signal is as exported, so, the signal that two inputs of XOR circuit 1322 receive is identical, therefore, XOR Circuit 1322 exports low level signal in the follow-up course of work.And block of pixels 11 has been after pixel exposure signal has been carried out, The signal of output end output can be end exposure signal by exposing non-end signal saltus step, i.e., to be low by high level signal saltus step Level signal, so, block of pixels reset signal acquisition module 132 can be using this signal saltus step answering as next block of pixels 11 Position signal.For example, after each pixel cell 12 to be exposed in ith pixel block 11 completes pixel exposure processing, ith pixel The output end output end exposure signal of block 11, as exports low level signal, other block of pixels output high level signal.This When, first exports low level signal with gate circuit 133, and transmits to the input of control module 131.So, because second prolongs When submodule 1323 and second be connected with an input of gate circuit 1325 with the input of control module 131, therefore first An input to second and gate circuit 1325 also can be transmitted in the skip signal exported with gate circuit 133, and prolongs by second When the not circuit 1323 of submodule 1323 and second transmit another input to second and gate circuit 1325 so that second with The output end output reset signal of gate circuit 1325, and reset signal is sent to OR circuit 1326, and then cause OR gate electricity Road 1326 exports reset signal.Because first end of the output end respectively with m switch module 133 of OR circuit 1326 is connected, Therefore, after control module 131 controls i+1 switch module 133 to close, i+1 switch module 133 can be believed resetting Number send to i+1 block of pixels 11 reset terminal.So, can be in ith pixel block by above-mentioned each submodule After 11 output end exposure signals, the reset signal of i+1 block of pixels 11 can be generated, the reset signal of each block of pixels Timing diagram, as shown in Figure 8.
A kind of image sensing device of the present invention, image sensing device include m block of pixels, included in each block of pixels At least two adjacent pixel cells to be exposed, and select different block of pixels to carry out in m block of pixels by block menu member Pixel exposure processing, it is achieved thereby that the pixel exposure for carrying out individual element block to m block of pixels in units of block of pixels is handled. So, because the luminance difference of adjacent pixel cell to be exposed is away from smaller, adjacent pixel cell to be exposed is divided to In one block of pixels so that the brightness light and shade gap of all pixel cells to be exposed in block of pixels is small, it is possible to reduce block of pixels The stand-by period of interior pixel cell to be exposed, so as to shorten the exposure of all pixel cells to be exposed in image sensing device Time, and then the frame per second of image sensing device is improved, improve convenient Consumer's Experience in time.
As shown in figure 9, the present invention provides a kind of image processing method, applied to the image sensing dress described in above-described embodiment Put, image processing method comprises the following steps：
Step S11, block menu member receives the end exposure signal that the i-th -1 block of pixels is sent.
Wherein, i is the integer for being not more than m more than 1.
Step S12, block menu member determines that ith pixel block carries out pixel exposure processing in m block of pixels, and to i-th Individual block of pixels sends exposure commencing signal and reset signal, other block of pixels into m block of pixels in addition to ith pixel block Input send and expose non-commencing signal.
Wherein, exposure commencing signal is to indicate that block of pixels carries out the signal of pixel exposure processing；Exposing non-commencing signal is Indicate the signal that block of pixels is handled without pixel exposure.M is the line number for the array that pixel cell to be exposed is formed, and is greater than 0 Integer.
Step S13, ith pixel root tuber carries out voltage amplitude according to reset signal, and according to exposure commencing signal to pixel Be exposed processing, and after the completion of pixel exposure, end exposure signal sent to block menu member, make block select Unit selection i-th+ 1 block of pixels carries out pixel exposure processing, until m block of pixels completes pixel exposure processing.
Further, as shown in Figure 10, the present invention also provides a kind of image processing method, applied to described in above-described embodiment Image sensing device, image processing method comprises the following steps：
Step S21, block menu member receives global reset signal.
Step S22, block menu member sends reset signal to the 1st block of pixels and exposure starts according to global reset signal Signal, and the input of other block of pixels into m block of pixels in addition to the 1st block of pixels sends and exposes non-commencing signal.
Step S23, block menu member receives the end exposure signal that the i-th -1 block of pixels is sent.
Wherein, i is the integer for being not more than m more than 1.
Step S24, block menu member determines that ith pixel block carries out pixel exposure processing in m block of pixels, and to i-th Individual block of pixels sends exposure commencing signal and reset signal, and other pixels into m block of pixels in addition to ith pixel block The input of block, which is sent, exposes non-commencing signal.
Wherein, exposure commencing signal is to indicate that block of pixels carries out the signal of pixel exposure processing；The exposure does not start letter Number it is to indicate the signal that block of pixels is handled without pixel exposure；M is the line number for the array that pixel cell to be exposed is formed, and is big In 0 integer.
Step S25, ith pixel root tuber carries out voltage amplitude according to reset signal, and according to exposure commencing signal to pixel Be exposed processing, and after the completion of pixel exposure, end exposure signal sent to block menu member, make block select Unit selection i-th+ 1 block of pixels carries out pixel exposure processing, until m block of pixels completes pixel exposure processing.
A kind of image sensing device and method of the present invention, image sensing device include m block of pixels, in each block of pixels Include at least two adjacent pixel cells to be exposed, and different pixels is selected in m block of pixels by block menu member Block carries out pixel exposure processing, it is achieved thereby that the pixel for carrying out individual element block to m block of pixels in units of block of pixels exposes Light processing.So, because the luminance difference of adjacent pixel cell to be exposed is away from smaller, by adjacent pixel cell to be exposed It is divided in a block of pixels so that the brightness light and shade gap of all pixel cells to be exposed in block of pixels is small, it is possible to reduce The stand-by period of pixel cell to be exposed in block of pixels, so as to shorten all pixel cells to be exposed in image sensing device Time for exposure, and then improve the frame per second of image sensing device, improve convenient Consumer's Experience in time.
In summary, the pixel cell to be exposed of adjacent lines is divided in a block of pixels by the present invention so that block of pixels In all pixel cells to be exposed brightness light and shade gap it is small, it is possible to reduce in block of pixels during the wait of pixel cell to be exposed Between.So the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as Into all equivalent modifications or change, should by the present invention claim be covered.

Claims (11)

1. a kind of image sensing device, it is characterised in that described image sensing device includes：
M block of pixels, wherein, at least two adjacent pixel cells to be exposed are included in the block of pixels；It is described to be exposed Pixel cell includes input, output end and reset terminal, for being exposed processing to pixel, and according to the exposure knot of its own The exposure signal that fruit and input obtain, determines exposure signal to be sent, the exposure to be sent is sent by output end Signal；M is the integer more than 0；
Block menu member, is connected with the input, output end of the m block of pixels and reset terminal, for according to the m picture respectively The exposure signal of the output end output of plain block, the block of pixels of determination progress pixel exposure processing in the m block of pixels, and to The reset terminal of the block of pixels for carrying out pixel exposure processing sends reset signal, to the pixel of the progress pixel exposure processing The input of block sends exposure commencing signal, into m block of pixels in addition to the block of pixels of the progress pixel exposure processing The input of other block of pixels, which is sent, exposes non-commencing signal.
2. image sensing device according to claim 1, it is characterised in that
The input of each pixel cell to be exposed is in turn connected to form exposure signal output team with output end in the block of pixels Row；The input of the exposure signal output queue be the block of pixels input, the exposure signal output queue it is defeated Go out output end of the end for the block of pixels, the reset terminal of the exposure signal output queue is the reset terminal of the block of pixels.
3. image sensing device according to claim 1, it is characterised in that：Described piece of menu member includes：Control module, as Plain block reset signal acquisition module, m switch module；Wherein,
Control terminal of the output end of the control module respectively with the m switch module is connected；
The block of pixels reset signal acquisition module is defeated with the first end of the m switch module and the control module respectively Enter end connection；
Described piece of menu member be connected respectively with the input, output end of the m block of pixels and reset terminal including：
Output end of the input of the control module respectively with the m block of pixels is connected, the output end of the control module The input with the m block of pixels is connected respectively；
Second end of the reset terminal of the m block of pixels respectively with the m switch module is connected, and the reset of a block of pixels The second end only with a switch module is held to be connected.
4. image sensing device according to claim 3, it is characterised in that：Described piece of menu member also includes：First and door Circuit and m the first not circuits；
The input of the control module be connected respectively with the output end of the m block of pixels including：
The output end of the m block of pixels is connected with described first with the input of gate circuit respectively, the control module it is defeated Enter end to be connected with described first with the output end of gate circuit；
The output end of the control module be connected respectively with the input of the m block of pixels including：
Input of the output end of the control module respectively with the m the first not circuits is connected, the m the first NOT gates Input of the output end of circuit respectively with the m block of pixels is connected, and the output end of first not circuit is only with one The input connection of individual block of pixels.
5. image sensing device according to claim 4, it is characterised in that：Described piece of menu member also includes：
Global reset switchs, and is connected with the input of the control module, for controlling the open and close of the control module；
The block of pixels reset signal acquisition module includes：First delay submodule, XOR circuit, the second delay submodule, the Two not circuits, second with gate circuit and OR circuit；Wherein,
The input of the first delay submodule and the input of the XOR circuit connect with Global reset switch, institute The output end for stating the first delay submodule is connected with the input of the XOR circuit；The output end of the XOR circuit with it is described The input connection of OR circuit；
The block of pixels reset signal acquisition module is defeated with the first end of the m switch module and the control module respectively Enter end connection, including：
The input of the second delay submodule and the second input and the input company of the control module with gate circuit Connect, the output end of the second delay submodule is connected with the input of second not circuit, second not circuit Output end be connected with described second with the input of gate circuit, described second with the output end of gate circuit and the OR circuit Input connection, the first end of the output end of the OR circuit respectively with the m switch module is connected.
6. image sensing device according to claim 1, it is characterised in that
The pixel cell to be exposed includes：Pulse width modulation (PWM) pixel and the 3rd and gate circuit；Wherein,
The PWM pixels are connected with the described 3rd with the input of gate circuit.
7. image sensing device according to claim 1, it is characterised in that the exposure signal includes：End exposure is believed Number, expose non-end signal.
8. image sensing device according to claim 7, it is characterised in that
Described piece of menu member, specifically for after the end exposure signal that is sent in the output end for receiving the i-th -1 block of pixels, Determine that ith pixel block carries out pixel exposure processing in the m block of pixels, and sent out to the reset terminal of the ith pixel block Reset signal is sent, exposure commencing signal is sent to the input of the ith pixel block, is removed described i-th into m block of pixels The input of other block of pixels outside block of pixels, which is sent, exposes non-commencing signal；Receiving the defeated of the ith pixel block After going out end output end exposure signal, determine that i+1 block of pixels carries out pixel exposure processing in the m block of pixels, directly Pixel exposure processing is sequentially completed to m block of pixels.
9. according to the image sensing device described in claim any one of 1-8, it is characterised in that
The array that the pixel cell to be exposed is formed is m*m arrays；
The number of the pixel cell to be exposed included in the block of pixels is m.
A kind of 10. image processing method, it is characterised in that applied to the image sensing device described in claim any one of 1-9, Described image processing method comprises the following steps：
Block menu member receives the end exposure signal that the i-th -1 block of pixels is sent, wherein, i is the integer for being not more than m more than 1；
Described piece of menu member determines that ith pixel block carries out pixel exposure processing in m block of pixels, and to i-th of picture Plain block sends exposure commencing signal and reset signal, other block of pixels into m block of pixels in addition to ith pixel block it is defeated Enter end and send the non-commencing signal of exposure；Wherein, exposure commencing signal is to indicate that block of pixels carries out the signal of pixel exposure processing；Institute It is to indicate the signal that block of pixels is handled without pixel exposure to state the non-commencing signal of exposure；M is what pixel cell to be exposed was formed The line number of array, it is greater than 0 integer；
The ith pixel root tuber is resetted according to the reset signal, and pixel is exposed according to exposure commencing signal Processing, and after pixel exposure terminates, end exposure signal is sent to described piece of menu member, make described piece select Unit selection i-th+ 1 block of pixels carries out pixel exposure processing, until the m block of pixels completes pixel exposure processing.
11. image processing method according to claim 10, it is characterised in that：I-th -1 is received in described piece of menu member Before the end exposure signal that individual block of pixels is sent, described image processing method also includes:
Described piece of menu member receives global reset signal；
Described piece of menu member sends reset signal and exposure commencing signal according to the global reset signal, to the 1st block of pixels, And the input of other block of pixels into m block of pixels in addition to the 1st block of pixels sends and exposes non-commencing signal.
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