CN107509039B

CN107509039B - A kind of image sensing device and image processing method

Info

Publication number: CN107509039B
Application number: CN201610421187.1A
Authority: CN
Inventors: 汪辉; 霍书瑶; 章琦; 汪宁; 田犁
Original assignee: Shanghai Advanced Research Institute of CAS
Current assignee: Shanghai Advanced Research Institute of CAS
Priority date: 2016-06-14
Filing date: 2016-06-14
Publication date: 2019-11-26
Anticipated expiration: 2036-06-14
Also published as: CN107509039A

Abstract

It includes: m block of pixels that the present invention, which provides a kind of image sensing device and image processing method, image sensing device, wherein includes at least two adjacent pixel units to be exposed in block of pixels；M is greater than 0 integer；Block menu member, it is connect respectively with the input, output end of m block of pixels and reset terminal, the exposure signal exported for the output end according to m block of pixels, the block of pixels for carrying out pixel exposure processing is determined in m block of pixels, and reset signal is sent to the reset terminal for the block of pixels for carrying out pixel exposure processing, exposure commencing signal is sent to the input terminal for the block of pixels for carrying out pixel exposure processing, the input terminal of other block of pixels, which is sent, into m block of pixels exposes non-commencing signal.The present invention reduces the waiting time of pixel unit to be exposed, shortens the time for exposure of all pixel units to be exposed, improves the frame per second of image sensing device, improves convenient user 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 technique

Technology of Internet of things is considered as the third wave of the world information industry after computer and internet, is new One wheel Industrial Revolution important directions and motive force, for tap new sources of economic growth, push upgrading of industry industry structure change, The efficiency and level for promoting social management and public services are of great significance.In Internet of Things, the sensing by magnanimity is needed Device carrys out the physical message of the natures such as temperature collection, humidity, pressure even image.And wherein imaging sensor is because it is adopted The signal of collection is intuitive, and what can be excavated contains much information, and is widely used.But since application site is open in Internet of Things, using ring Border is complicated and changeable, therefore wireless mode work of the sensor node mostly to be equipped with supplying cell.And under application circumstances, The battery of imaging sensor is not easy to replace.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 column grade memory composition.The input terminal of Pixel-level comparator is respectively PD node voltage and setting Reference voltage V_ref.The input data of column grade memory is inputted by the global counter outside pixel array.The work of PWM pixel It is as follows to make process: PD node is first reset to resetting voltage V_rst, during pixel exposure, PD node capacitor is because of extraneous light intensity It acts on the photogenerated current generated and discharges, PD node voltage decline, Pixel-level comparator compares PD node voltage and V_refBetween Relationship, when it is reduced to V_refWhen, the output V of the Pixel-level comparator_outIt jumps, this skip signal passes through control column Grade memory carries out primary " writing " operation, saves the numerical value of current global counter.The data in column grade memory are at this time The time for exposure tint quantized value of the pixel is equivalent to pixel since exposure between the time its comparator output switching activity Every being formed by pulse width.In this way, light intensity signal can be converted to time pulse signal by PWM pixel, and then can be with Reflect the power of light intensity signal using the width of time pulse signal.

It is stated when being exposed using the pixel in PWM pixel for pixel array in realization, there are following for inventor's discovery Problem: the pixel in PWM pixel for pixel array is exposed to be exposed line by line.After every one-row pixels start exposure, The voltage signal of the strong pixel of light intensity, reset will quickly reach reference voltage V_ref, obtain a time pulse signal, and light intensity Weaker pixel, the voltage signal decline resetted is slower, may be at the end of counter counts, and resetting voltage has not degraded To reference voltage V_ref.So, it is necessary to until the resetting voltage of the most dark pixel of entire row of pixels reaches reference voltage V_ref, or It is that counter counting 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 generally can all have darker pixel, cause the time for exposure of every a line be approximately equal to calculator count the period, So that the frame per second of imaging sensor is lower, it is more difficult to meet convenient user experience requirement in time.

Summary of the invention

In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of image sensing device and images Processing method, the frame per second for solving imaging sensor in the prior art is low, is unable to satisfy asking for timely convenient user experience Topic.

In order to achieve the above objects and other related objects, the present invention provides a kind of image sensing device, comprising: m pixel Block, wherein include at least two adjacent pixel units to be exposed in the block of pixels；The pixel unit to be exposed includes Input, output end and reset terminal for being exposed processing to pixel, and are obtained according to the exposure results and input terminal of its own The exposure signal taken determines exposure signal to be sent, sends the exposure signal to be sent by output end；M is greater than 0 Integer；Block menu member, connect, for according to the m respectively with the input, output end of the m block of pixels and reset terminal The exposure signal of the output end output of a block of pixels, determines the block of pixels for carrying out pixel exposure processing in the m block of pixels, And reset signal is sent to the reset terminal of the block of pixels for carrying out pixel exposure processing, to the progress pixel exposure processing The input terminal of block of pixels sends exposure commencing signal, into m block of pixels except the block of pixels of the progress pixel exposure processing it The input terminal 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 terminal of each pixel unit to be exposed and output end according to Secondary connection forms exposure signal output queue；The input terminal of the exposure signal output queue is the input terminal of the block of pixels, The output end of the exposure signal output queue is the output end of the block of pixels, 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, and block of pixels reset signal obtains mould Block, m switch module；Wherein, the output end of the control module is connect with the control terminal of the m switch module respectively；Institute Block of pixels reset signal acquisition module is stated to connect with the input terminal of the first end of the m switch module and the control module respectively It connects；It includes: the control mould that described piece of menu member is connect with the input, output end of the m block of pixels and reset terminal respectively The input terminal of block is connect with the output end of the m block of pixels respectively, the output end of the control module respectively with the m picture The input terminal of plain block connects；The reset terminal of the m block of pixels is connect with the second end of the m switch module respectively, and one The reset terminal of a block of pixels is only connect with the second end of a switch module.

In one embodiment of the invention, described piece of menu member further include: the first AND gate circuit and m the first NOT gate electricity Road；It includes: the defeated of the m block of pixels that the input terminal of the control module is connect with the output end of the m block of pixels respectively Outlet is connect with the input terminal of first AND gate circuit respectively, the input terminal of the control module and first AND gate circuit Output end connection；It includes: the control mould that the output end for stating control module is connect with the input terminal of the m block of pixels respectively The output end of block is connect with the input terminal of the m the first not circuits respectively, the output end point of the m the first not circuits It is not connect with the input terminal of the m block of pixels, and the only input with a block of pixels of the output end of first not circuit End connection.

In one embodiment of the invention, described piece of menu member further include: Global reset switch, with the control module Input terminal connection, for controlling the open and close of the control module；It includes: that the block of pixels reset signal, which obtains module, One delay submodule, XOR circuit, the second delay submodule, the second not circuit, the second AND gate circuit and OR circuit；Its In, the input terminal of the first delay submodule and the input terminal of the XOR circuit and Global reset switch connect, institute The output end for stating the first delay submodule is connect with the input terminal of the XOR circuit；The output end of the XOR circuit with it is described The input terminal of OR circuit connects；The block of pixels reset signal obtains the module first end with the m switch module respectively And the control module input terminal connection, comprising: it is described second delay submodule input terminal and the second AND gate circuit it is defeated Enter end to connect with the input terminal of the control module, the output end and second not circuit of the second delay submodule Input terminal connection, the output end of second not circuit connect with the input terminal of second AND gate circuit, described second and The output end of gate circuit is connect with the input terminal 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 unit to be exposed includes: PWM pixel and third AND gate circuit；Its In, the PWM pixel is connect with the input terminal of the third AND gate circuit.

In one embodiment of the invention, the exposure signal includes: end exposure signal, and signal is not finished in exposure.

In one embodiment of the invention, described piece of menu member, specifically in the output for receiving (i-1)-th block of pixels After holding the end exposure signal sent, the determining 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 the input terminal of Xiang Suoshu ith pixel block sends exposure and starts letter Number, the input terminal 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 A 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 unit to be exposed is formed is m*m array；The block of pixels In include pixel unit to be exposed number be m.

Further, the present invention provides a kind of image sensing method, is applied to above-mentioned image sensing device, at described image Reason method is the following steps are included: block menu member receives the end exposure signal that (i-1)-th block of pixels is sent, wherein i is greater 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 It states ith pixel block and sends exposure commencing signal and reset signal, other into m block of pixels in addition to ith pixel block The input terminal of block of pixels, which is sent, exposes non-commencing signal；Wherein, exposure commencing signal is that instruction block of pixels carries out at pixel exposure The signal of reason；The non-commencing signal of exposure is the signal for indicating block of pixels and handling without pixel exposure；M is pixel to be exposed The line number for the array that unit is formed, 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, sends exposure to described piece of menu member End signal makes described piece Unit selection i+1 block of pixels is selected 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 (i-1)-th block of pixels transmission is received in described piece of menu member Before signal, described image processing method further include: described piece of menu member receives global reset signal；Described piece of menu member according to The global reset signal sends reset signal and exposure commencing signal to the 1st block of pixels, and removes the 1st into m block of pixels The input terminal of other block of pixels except a block of pixels, which is sent, exposes non-commencing signal.

As described above, a kind of image sensing device of the invention and image processing method, have the advantages that image Sensing device includes m block of pixels, includes at least two adjacent pixel units to be exposed 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, to realize as unit of block of pixels The pixel exposure processing of individual element block is carried out to m block of pixels.So, bright due to adjacent pixel unit to be exposed It is smaller to spend gap, adjacent pixel unit 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 unit is small, it is possible to reduce the waiting time of pixel unit to be exposed in block of pixels, so as to contract The time for exposure of all pixel units to be exposed in short image sensing device, and then the frame per second of image sensing device is improved, it mentions High convenient user experience in time.

Detailed description of the invention

Fig. 1 is shown as the structural schematic diagram of PWM pixel in the prior art.

Fig. 2 is shown as the first structural schematic diagram of image sensing device provided by the invention.

Fig. 3 is shown as second of structural schematic diagram of image sensing device provided by the invention.

Fig. 4 is shown as the third structural schematic diagram of image sensing device provided by the invention.

Fig. 5 is shown as the 4th kind of structural schematic diagram of image sensing device provided by the invention.

Fig. 6 is shown as the 5th kind of structural schematic diagram of image sensing device provided by the invention.

Fig. 7 is shown as the 6th kind of structural schematic diagram of image sensing device provided by the invention.

Fig. 8 is shown as the 7th kind of structural schematic diagram 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 units to be exposed

13 pieces of menu members

111 PWM pixels

121 third AND gate circuits

131 control modules

132 block of pixels reset signals obtain module

133 switch modules

134 first AND gate circuits

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 circuits

1326 OR circuits

S11~S13 step

S21~S25 step

Specific embodiment

Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from Various modifications or alterations are carried out under spirit of the invention.It should be noted that in the absence of conflict, following embodiment and implementation Feature in example can be combined with each other.

Please refer to Fig. 2~Figure 10.It should be noted that diagram provided in following embodiment only illustrates in a schematic way Basic conception of the invention, only shown in schema then with related component in the present invention rather than package count when according to actual implementation Mesh, shape and size are drawn, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its Assembly layout kenel may also be increasingly complex.

Referring to Fig. 2, the present invention provides a kind of image sensing device, comprising:

M block of pixels 11.

It wherein, include at least two pixel units 12 to be exposed in block of pixels 11.Pixel unit 12 to be exposed includes defeated Enter end, output end and reset terminal, for being exposed processing to pixel, and is obtained according to the exposure results of its own and input terminal Exposure signal, determine exposure signal to be sent, exposure signal to be sent sent by output end.M is be greater than 0 whole Number.

Block menu member 13 is connect with the input, output end of m block of pixels 11 and reset terminal respectively, for according to m picture The exposure signal of the output end output of plain block 11, determines the block of pixels 11 for carrying out pixel exposure processing in m block of pixels 11, and Reset signal, the block of pixels of Xiang Jinhang pixel exposure processing are sent to the reset terminal for the block of pixels 11 for carrying out pixel exposure processing 11 input terminal sends exposure commencing signal, into m block of pixels 11 in addition to the block of pixels 11 for carrying out pixel exposure processing The input terminal of other 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；Expose non-commencing signal It is the signal for indicating block of pixels 11 and being handled without pixel exposure.

Further, exposure signal includes: end exposure signal, and signal is not finished in exposure.

It should be noted that the occurrence of m is related with the pixel exposure mode of existing image sensing device.Existing When image sensing device is exposed with the behavior unit of pixel array, then m is the row for the array that pixel unit to be exposed is formed Number.It include that be in block of pixels include at least two adjacent pixel units to be exposed in block of pixels and when m is greater than 1 Pixel unit to be exposed is the pixel unit to be exposed of adjacent at least two rows in the array that pixel unit to be exposed is formed.In When image sensing device is exposed using the column of pixel array as unit, then m is the column for the array that pixel unit to be exposed is formed Number.It include that be in block of pixels include at least two adjacent pixel units to be exposed in block of pixels and when m is greater than 1 Pixel unit to be exposed be pixel unit to be exposed formed array in it is adjacent at least two column pixel units to be exposed.In During being described below of the embodiment of the present invention, the present invention with existing image sensing device with the behavior unit of pixel array into When row exposure, m is illustrated for the line number for the array of pixel unit to be exposed formation.

Specifically, including the array that pixel unit 12 to be exposed is formed in image sensing device, in this way, by be exposed The array of pixel unit 12 can convert optical signals to electric signal, and processing can be as exposed to pixel.In a width figure As in, there may be increase difference, the pixel unit to be exposed 12 of as every row for the brightness of the pixel unit to be exposed 12 of every row May not only there be the brighter pixel unit to be exposed 12 of brightness, but also there are the lower pixel unit 12 to be exposed of brightness, cause When carrying out the pixel exposure processing of pixel unit 12 to be exposed with the behavior unit of the array of pixel unit 12 to be exposed, there are complete The long problem of the pixel exposure time of pixel unit to be exposed 12 in a row.And in piece image, adjacent rows it is to be exposed The h of the brightness light and shade gap very little of pixel unit 12, as h-th of jth row pixel unit 12 and+1 row of jth to be exposed The brightness light and shade gap of a pixel unit to be exposed 12 is smaller, can be by the array of the pixel unit 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 is by 12 shape of pixel unit to be exposed At array be divided into the block of pixels 11 that m contains the pixel unit to be exposed 12 of at least two adjacent rows.An and picture The number for the pixel unit to be exposed 12 for including in plain block 11 is the line number for the array that pixel unit 12 to be exposed is formed, wait expose The pixel unit to be exposed 12 for including when the line number for the array that light pixel unit 12 is formed is greater than 1, in each block of pixels 11 be to The pixel unit to be exposed 12 at least two adjacent rows in array that exposing pixels unit 12 is formed.In this way relative to technology In treat exposing pixels unit 12 formation array with behavior unit for pixel is exposed processing, due to block of pixels 11 Number it is identical as the line number of array of pixel unit 12 to be exposed in the prior art, as, the quantity exposed in the present invention It is constant, therefore can not increase when carrying out pixel exposure processing to the pixel unit to be exposed 12 in m block of pixels 11 respectively Expose reading times.

Need to illustrate: j, h are the integer for being less than m greater than 0.

Block menu member 13 in image sensing device can determine the block of pixels 11 that need to currently carry out pixel exposure processing, Realize the pixel exposure of individual element block 11.Since the processing unit to be exposed 12 in each block of pixels 11 is exposed pixel The time of processing be not it is 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 current block of pixels 11 of block menu member 13 is completed Pixel exposure processing, to carry out the selection of next block of pixels 11.In this way, 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 terminal of this block of pixels 11, to this The reset terminal of block of pixels 11 sends reset signal, so that each pixel unit 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 terminal of pixel unit to be exposed 12 in this block of pixels 11 After receiving exposure commencing signal, whether each pixel unit 12 to be exposed in this block of pixels 11 can be completed according to itself Pixel exposure processing and the exposure signal that respectively input terminal obtains, and then determine exposure signal respectively to be sent.Herein as After each pixel unit 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 13 selection of block menu member is made to select next block of pixels for carrying out pixel exposure in m block of pixels 11 11。

It should be noted that pixel unit to be exposed 12 in block of pixels 11 is after receiving exposure commencing signal, true When determining the exposure signal to be sent of itself, received exposure commencing signal can be equal at end exposure signal Reason.As, the pixel unit to be exposed 12 of exposure commencing signal is received after itself pixel exposure, can be determined pending The exposure signal sent is end exposure signal.So, if each pixel unit 12 to be exposed in block of pixels 11 receives To the exposure that when exposing commencing signal, each pixel unit 12 to be exposed obtains received exposure commencing signal as input terminal End signal determines respective exposure signal to be sent according to pixel exposure processing itself whether is completed.

Further, as shown in figure 3, the input terminal of each pixel unit 12 to be exposed and output end be successively in block of pixels 11 Connection forms exposure signal output queue.The input terminal of exposure signal output queue is the input terminal of block of pixels 11, 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, including input terminal, reset terminal and output end in processing unit 11 to be exposed, and each block of pixels 11 In each pixel unit 12 to be exposed input terminal and output end be in turn connected to form exposure signal output queue.As, it is exposing In optical signal output queue, each pixel unit 12 to be exposed is cascaded, that is to say, that it is directed to a block of pixels 11, as The output end of the pixel unit 12 to be exposed of h-th of plain block 11 is connect with the input terminal of h+1 pixel units 12 to be exposed, the The output end of h+1 pixel units 12 to be exposed connect to form exposure letter with the input terminal of h+2 pixel units 12 to be exposed Number output queue.It can be using the input terminal of the 1st pixel unit 12 to be exposed of block of pixels 11 as exposure signal output queue Input terminal, using the output end of the last one pixel unit 12 to be exposed of block of pixels 11 as the defeated of exposure signal output queue Outlet.Since each pixel unit 12 to be exposed is before carrying out pixel exposure, it is both needed to first reset, therefore, exposure signal output The reset terminal of queue is the reset terminal of all pixel units 12 to be exposed in exposure signal output queue.

Pixel unit 12 to be exposed can be determined according to the exposure signal and the exposure results of its own that its input terminal obtains Its own exposure signal to be sent.Whether itself exposure results of pixel unit 12 to be exposed refer to pixel unit to be exposed 12 Complete the exposure-processed to pixel.At this point, if the exposure-processed to pixel, and its input terminal is completed in pixel unit to be exposed 12 The exposure signal of acquisition is end exposure signal, then pixel unit 12 to be exposed determines that exposure signal to be sent is end exposure Signal.If pixel unit 12 to be exposed does not complete the exposure-processed to pixel, and the exposure signal that its input terminal obtains is exposure End signal, then pixel unit 12 to be exposed determines that exposure signal to be sent is that signal is not finished in exposure.If pixel to be exposed The exposure-processed to pixel is completed in unit 12, and the exposure signal that its input terminal obtains is that signal is not finished in exposure, then wait expose Light pixel unit 12 determines that exposure signal to be sent is that signal is not finished in exposure.If unfinished pair of pixel unit 12 to be exposed The exposure-processed of pixel, and the exposure signal that its input terminal obtains is that signal is not finished in exposure, then pixel unit 12 to be exposed is true Fixed exposure signal to be sent is that signal is not finished in exposure.After pixel unit 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 unit to be exposed in block of pixels 11 12 input terminal and output end is in turn connected to form exposure signal output queue, when block of pixels 11 carries out pixel exposure, in Each of pixel unit 12 to be exposed start to carry out pixel exposure processing, and k-th of pixel unit 12 to be exposed can root The exposure signal and the exposure results of itself sent according to the output end of its kth -1 pixel unit 12 to be exposed is determined pending The exposure signal sent, and it is sent to by output end the input terminal of the pixel unit 12 to be exposed of its kth+1.Wherein, k be greater than 1, the integer less than m.

The input terminal 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 terminal of the 1st pixel unit 12 to be exposed of exposure signal output queue, exposure signal output queue it is last The reset terminal of each pixel unit 12 to be exposed in the output end and exposure signal output queue of one pixel unit 12 to be exposed Connection.It, 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, at this time this block of pixels for carrying out pixel exposure processing The reset terminal of all pixel units 12 to be exposed in 11 can receive reset signal, and then be resetted accordingly, and After the completion of reset, each pixel unit 12 to be exposed is exposed processing to pixel.This carries out the block of pixels of processing to be exposed After 11 input terminal 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 unit 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 can determine that exposure signal to be sent is end exposure signal, and end exposure is believed The input terminal of the 2nd pixel unit 12 to be exposed number is sent to by output end.At this point, input terminal and the 1st pixel to be exposed Unit 12 output end connection to the 2nd pixel unit 12 to be exposed by its input terminal it is available to be exposed to the 1st The end exposure signal that pixel unit 12 is sent.If the 2nd pixel unit 12 to be exposed completes the exposure-processed of pixel, it is determined that Exposure signal to be sent is end exposure signal, sends end exposure signal by output end.At this point, input terminal and the 2nd 3rd pixel unit 12 to be exposed of the output end connection of pixel unit 12 to be exposed is available to the 2nd by its input terminal The end exposure signal that the output end of a pixel unit to be exposed 12 is sent.Similarly, the 3rd to the last one pixel list to be exposed Member 12 determines that the detailed process of exposure signal to be sent determines exposure signal to be sent with the 2nd pixel unit 12 to be exposed Detailed process is the same, and details are not described herein.In this way, carrying out all pixels to be exposed in the block of pixels 11 of processing to be exposed herein After unit 12 completes pixel exposure processing, this carries out the last one pixel unit to be exposed of the block of pixels 11 of processing to be exposed 12 output end exports end exposure signal, as carries out the output end output end exposure letter of the block of pixels 11 of processing to be exposed Number, block menu member 13 receives end exposure signal at this time, and then can know that the block of pixels 11 for being currently exposed processing is complete At 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, and Xiang Jinhang pixel exposes When the input terminal 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 except plain block 11, which are sent, exposes non-commencing signal.In this way, the input terminal of other each block of pixels 11 receives After exposing non-commencing signal, exposure can be equal to, signal is not finished, it is true according to following exposure signals to be sent at this time Fixed process is it is found that the exposure signal to be sent that each pixel unit 12 to be exposed determines in other each block of pixels 11 is to expose Signal is not finished in light, and can be sent to block menu member 13 by the output end of other each block of pixels 11.

Further, block menu member 13, specifically for the exposure knot sent in the output end for receiving (i-1)-th 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 terminal of ith pixel block 11, removes into m block of pixels 11 The input terminal of other block of pixels 11 except 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 carries 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 for receiving the transmission of (i-1)-th block of pixels 11, illustrates the Pixel unit to be exposed 12 in i-1 block of pixels 11 completes pixel exposure processing, and block menu member 13 can choose down at this time One block of pixels 11 carries out pixel exposure processing.At this point, block menu member 13 can determine ith pixel in m block of pixels 11 Block 11 carries out pixel exposure processing, starts in this way, block menu member 13 can send exposure to the input terminal of ith pixel block 11 Signal, and reset signal is sent to the reset terminal of ith pixel block 11.The reset terminal of ith pixel block 11 in this way can receive To reset signal, the reset terminal of all pixel units 12 to be exposed in ith pixel block 11 can receive reset at this time Signal, and then resetted accordingly, and after the completion of reset, processing is exposed to pixel.It is defeated in ith pixel block 11 Enter termination and receive exposure commencing signal, as the 1st of ith pixel block 11 12 input terminal of pixel unit to be exposed is receiving After exposing commencing signal, can be equal and end exposure signal, not complete pixel in the 1st pixel unit 12 to be exposed When exposure-processed, the 1st pixel unit 12 to be exposed determines that exposure signal to be sent is that signal is not finished in exposure, defeated by its Outlet sends exposure and signal is not finished.At this point, input terminal connect with the output end of the 1st pixel unit 12 to be exposed to the 2nd A pixel unit to be exposed 12 is not finished by the exposure that its input terminal available to the 1st pixel unit 12 to be exposed is sent Signal.No matter whether its own is completed the exposure-processed of pixel to 2nd pixel unit 12 to be exposed, and that determines is to be sent Exposure signal be exposure signal is not finished, by its output end send exposure signal is not finished to subsequent pixel list to be exposed Member 12.Subsequent pixel unit to be exposed 12 is identical as the exposure signal to be sent that the 2nd pixel unit 12 to be exposed determines, Signal as is not finished for exposure since input terminal is received, the output end of subsequent pixel unit 12 to be exposed exports Signal is not finished in exposure.At this point, the exposure signal of m block of pixels to 13 transmission of block menu member is that signal, block is not finished in exposure Menu member 13 no longer carries out the selection of next block of pixels 11.

When the 1st pixel unit 12 to be exposed of ith pixel block completes the exposure-processed of pixel, the 1st to be exposed Pixel unit 12 determines that exposure signal to be sent is end exposure signal, sends end exposure signal by its output end.This When, input terminal connect with the output end of the 1st pixel unit 12 to be exposed to the 2nd pixel unit 12 to be exposed by the way that its is defeated The end exposure signal for entering to hold available to the 1st pixel unit 12 to be exposed to send.If the 2nd pixel unit 12 to be exposed Complete the exposure-processed of pixel, it is determined that exposure signal to be sent is end exposure signal, sends exposure knot by output end Beam signal.At this point, input terminal connect with the output end of the 2nd pixel unit 12 to be exposed to the 3rd pixel unit to be exposed The 12 end exposure signals sent by the output end of available to the 2nd pixel unit 12 to be exposed of its input terminal.Together Reason, the 3rd to be exposed to the detailed process of the determining exposure signal to be sent of the last one pixel unit 12 to be exposed and the 2nd Pixel unit 12 determines that the detailed process of exposure signal to be sent is the same, and details are not described herein.In ith pixel block 11 After all exposing pixels units 12 complete pixel exposure processing, the output end output end exposure letter of ith pixel block 11 Number.

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 While entering end and send exposure commencing signal, and send reset signal to the reset terminal of ith pixel block 11, 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, at this point, other each pictures After the input terminal of plain block 11 receives the non-commencing signal of exposure, exposure can be equal to, signal is not finished, in this way according to upper State the process that exposure signal to be sent determines it is found that in other each block of pixels 11 each pixel unit 12 to be exposed determine to The exposure signal of transmission is that signal is not finished in exposure, and is sent to block menu member by the output end of other each block of pixels 11 13。

All pixel units 12 to be exposed in the ith pixel block 11 of 13 selection of block menu member complete the exposure of pixel After processing, the output end of ith pixel block 11 is the output of the last one pixel unit 12 to be exposed of ith pixel block 11 End output end exposure signal.Since block menu member 13 is connect with the output end of ith pixel block 11, ith pixel block The end exposure signal of the output end output of the last one of 11 pixel unit 12 to be exposed is sent to block menu member 13, at this point, Block menu member 13 can choose next block of pixels after the end exposure signal for receiving the transmission of ith pixel block 11 11 be the exposure-processed that i+1 block of pixels 11 carries out pixel.At this point, block menu member 11 can be to i+1 block of pixels 11 Reset terminal send reset signal, to the input terminal of i+1 block of pixels 11 send expose commencing signal, so as to i+1 picture Plain block 11 carries out pixel exposure processing.It sends and exposes to the input terminal 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, and details are not described herein.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 connects, makes it should be noted that other modes also can be used in the pixel unit to be exposed 12 in block of pixels 11 Block of pixels 11 exports exposure signal.For example, the output end of the pixel unit to be exposed 12 of block of pixels 11 respectively connects a NOT gate Circuit, and each not circuit output and NAND gate circuit input terminal 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 unit 12 to be exposed in block of pixels 11 Afterwards, end exposure signal is exported, when any one pixel unit 12 to be exposed does not complete pixel exposure processing, output exposes not End signal.Certainly, each pixel unit 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 unit to be exposed 12 is formed is m*m array, at this point, including in block of pixels The number of pixel unit 12 to be exposed is m, can guarantee in this way the number of the block of pixels for including in image sensing device with wait expose 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 unit to be exposed 12 is formed can also be the array of other forms, example Array as pixel unit 12 to be exposed is formed is m*n array, the invention is not limited in this regard.

So, since the luminance difference of adjacent pixel unit to be exposed is away from smaller, pass through above-mentioned image sensing device The pixel unit to be exposed of adjacent rows is divided in a block of pixels, so that all pixel units to be exposed in block of pixels Brightness light and shade gap is small, it is possible to reduce the waiting time of pixel unit to be exposed in block of pixels, so as to shorten image sensing The time for exposure of all pixel units to be exposed in device, and then the frame per second of image sensing device is improved, it is convenient in time to improve User experience.

Further, as shown in figure 4, pixel unit to be exposed 12 includes: PWM (Pulse Width Modulation, arteries and veins Rush width modulated) pixel 111 and third AND gate circuit 112.

Wherein, PWM pixel 111 is connect with the input terminal of third AND gate circuit 112.

Specifically, since pixel unit 12 to be exposed need to complete the exposure-processed of pixel, and need to be obtained according to input terminal Exposure signal and the exposure results of itself determine exposure signal to be sent.Therefore, the pixel unit to be exposed 12 in the present invention It include: PWM pixel 111 and third AND gate circuit 112.

It should be noted that PWM pixel 111 is PWM pixel 111 in the prior art, specific structure can join Fig. 1 institute Show, details are not described herein by the present invention.

One input terminal of third AND gate circuit 112 is connect with the output end of the comparator of PWM pixel 111, another is defeated Enter end to connect with the output end of the previous pixel unit 12 to be exposed of this pixel unit 12 to be exposed.

It should be noted that the input terminal of third AND gate circuit 112 be pixel unit 12 to be exposed input terminal, third with The output end of gate circuit 112 is the output end of pixel unit 12 to be exposed.

It should be noted that pixel unit 12 to be exposed gets reset letter by reset terminal in present aspect embodiment Number, it carries out reset and refers to that the photodiode PD in PWM pixel 111 in each pixel unit 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 is obtained Module 132, m switch module 133.

Wherein, the output end of control module 131 is connect with the control terminal of m switch module 133 respectively.

Block of pixels reset signal obtain module 132 respectively with the first end of m switch module 133 and control module 131 Input terminal connection.

At this point, block menu member 13 connect with the input, output end of m block of pixels 11 and reset terminal respectively and includes:

The input terminal of control module 131 is connect with the output end of m block of pixels 11 respectively, the output end of control module 131 It is connect respectively with the input terminal of m block of pixels 11.

The reset terminal of m block of pixels 11 is connect with the second end of m switch module 133 respectively, and block of pixels 11 Reset terminal is only connect with the second end of a switch module 133.

Specifically, block of pixels 11 of the control module 131 for determining progress pixel exposure processing, and determining i-th After block of pixels 11, exposure commencing signal is sent to the input terminal of ith pixel block 11, is sent to the input terminal of other block of pixels 11 Expose non-commencing signal, and control in m switch module 133, second end connect with the reset terminal of ith pixel block 11 i-th A 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 is closed, i-th switch The first end of module 133 obtains module 132 with block of pixels reset signal and connect, the reset terminal of second end and ith pixel block 11 Connection, and block of pixels reset signal obtains module 132 when block menu member 13 works normally, it is available to arrive reset signal, because This, when i-th of switch module 133 is closed, the reset signal that block of pixels reset signal obtains module 132 and can will acquire passes through I-th of switch module 133 is sent to the reset terminal of ith pixel block 11, and the reset terminal of ith pixel block 11 receives reset letter Number, the reset terminal of each pixel unit 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 terminal of ith pixel block 11 receives exposure commencing signal, ith pixel block 11 Interior each pixel unit 12 to be exposed determines signal to be exposed respectively to be sent, to be exposed in ith pixel block 11 After pixel unit 12 completes the exposure-processed of pixel, the output end of ith pixel block 11 is sent to control module 131 to expose End signal, control module 131 can choose i+1 block of pixels 11 and carry out pixel exposure processing at this time.Control module 131 is selected Select process and the selection progress pixel of ith pixel block 11 of control module 131 that i+1 block of pixels 11 carries out pixel exposure processing The process of exposure-processed is identical, and details are not described herein.

Further, as shown in fig. 6, above-mentioned piece of menu member 13 further include: the first AND gate circuit 134 and m the first NOT gates Circuit 135.

It includes: the defeated of m block of pixels 11 that the input terminal of control module 131 is connect with the output end of m block of pixels 11 respectively Outlet is connect with the input terminal of the first AND gate circuit 134 respectively, the input terminal of control module 131 and the first AND gate circuit 134 Output end connection.

It includes: that control module 131 exports that the output end of control module 131 is connect with the input terminal of m block of pixels 11 respectively End connect with the input terminal of m the first not circuits 135 respectively, the output end of a first not circuit 135 of m respectively with m picture The input terminal of plain block 11 connects, and the output end of first not circuit 135 is only connect with the input terminal of a block of pixels 11.

Specifically, exposure signal and exposure commencing signal, exposing non-commencing signal can be indicated with digital signal, example Such as, end exposure signal and exposure commencing signal are low level signal, can be indicated with " 0 ", signal and exposure is not finished in exposure Non- commencing signal is high level signal, can be indicated with " 1 ".Since the output end of m block of pixels is both needed to the signal that will be exported hair Send to control module 131, in order to reduce the design complexities of control module 131, can be arranged in block menu member 13 first with Gate circuit 134, at this point, the input terminal of the first AND gate circuit 134 is connect with the output end of m block of pixels 11, the first AND gate circuit 134 output end is connect with the input terminal of control module 131.In this way, if ith pixel block 11 does not complete pixel exposure processing, Then to the first AND 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, it is high level signal that the input terminal of the first AND gate circuit 134, which obtains level signal, The output end of such first AND gate circuit 134 can export high level signal, at this point, the input terminal of control module 131 receives High level signal 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 the first AND gate circuit 134 send low level signal, due to other block of pixels 11 output end export it is equal It is that signal is not finished is high level signal for exposure, so, it is i-th that the input terminal of the first AND gate circuit 134, which obtains level signal, The high level signal that the low level signal and other block of pixels 11 that a block of pixels 11 is sent are sent, such first AND gate circuit 134 Output end can export low level signal, at this point, the input terminal of control module 131 receives low level signal, can know Ith pixel block 11 completes the exposure-processed of pixel, can choose i+1 block of pixels 11 and carries 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 terminal of block 11 connects.And the control terminal of switch module 133 is usually to receive high level signal closure, receives low electricity Ordinary mail number disconnects, and it is low level signal that m block of pixels 11, which needs received exposure commencing signal, therefore, in order to reduce control mould The design complexities of block 131 are arranged m first between the output end of control module 131 and the input terminal of m block of pixels 11 Not circuit 135.As, one the first not circuit 135 is set for the input terminal of each block of pixels 11.That is, control The output end of molding block 131 is connect with the input terminal of m the first not circuits 135 respectively.Each first not circuit 135 Output end only connects the input terminal connection an of block of pixels 11.In this way, control module 131 select ith pixel block 11 into It, can be to the defeated of i-th of first not circuits 135 being connect with the input terminal of ith pixel block 11 when the processing of row pixel exposure Enter the control terminal transmission high level of end and i-th of switch module 133 for connecting with the reset terminal of ith pixel block 11 of second end Signal, after the input terminal of i-th of first not circuits 135 receives high level signal, output end exports low level signal, and It is sent to the input terminal of ith pixel block 11.Also, after the control terminal of i-th of switch module 133 receives high level signal, The closure of i-th of switch module 133 is controlled, the first end of i-th of switch module 133 is connected with second end at this time, so, as The reset signal that plain block reset signal acquisition module 132 obtains can be transmitted to the reset terminal of ith pixel block, so that i-th Each pixel unit 12 to be exposed in block of pixels resets, and carries out pixel exposure processing.Also, the in ith pixel block the 1st A 12 input terminal of pixel unit to be exposed is available to arrive low level signal, as gets exposure commencing signal, so that The 1st pixel unit 12 to be exposed in ith pixel block can determine exposure to be sent according to the exposure results of its own Optical signal, the exposure that other pixel units 12 to be exposed in ith pixel block are obtained according to respective input terminal Signal and the exposure results of itself determine respective exposure signal to be sent, are specifically referred to above-mentioned ith pixel block The specific determination process of the exposure signal of each pixel unit 12 to be exposed in 11, details are not described herein.Control module 131 to The input terminal and second end and other block of pixels for other the first not circuits 135 being connect with the input terminal of other block of pixels 11 The control terminal of other switch modules 135 of 11 reset terminal connection sends low level signal.With the input terminal of other block of pixels 11 Connection other first not circuits 135, as respectively with other m-1 block of pixels 11 in addition to ith pixel block 11 The input terminal of other m-1 the first not circuits 135 of input terminal connection can receive low level signal, at this time other m-1 The output end of a first not circuit 135 exports high level signal, and is respectively transmitted to other m-1 block of pixels respectively connected 11 input terminal.So, the input terminal of other m-1 block of pixels 11 receives high level signal, as receives exposure Non- commencing signal, so that signal is not finished to the first AND gate circuit in the output end output exposure of other m-1 block of pixels 11 134.Also, the control terminal for other switch modules 135 that second end is connect with the reset terminal of other block of pixels 11, as second end The control terminal of other m-1 switch modules 135 connecting respectively with the reset terminal of other m-1 block of pixels 11 receives low level Signal, since the control terminal of other m-1 switch modules 135 receives low level signal, other m-1 switch module 135 control terminal respectively controls the disconnection of other m-1 switch modules 135, the as first end of other m-1 switch modules 135 It is disconnected with second end, block of pixels reset signal obtains the reset signal that module 132 obtains and is not transferred to other m-1 block of pixels 11 reset terminal, therefore each pixel unit 12 to be exposed in other m-1 block of pixels 11 is without pixel exposure processing.From And realizing only makes ith pixel block 11 carry out pixel exposure processing, as realizes 11 block-by-block of m block of pixels and carries out pixel exposure Light processing.

It should be noted that exposure signal and exposure commencing signal, exposing non-commencing signal can be used other signal tables Show, the invention is not limited in this regard.

Further, as shown in fig. 7, above-mentioned piece of menu member 13 further include:

Global reset switch 136 is connect with the input terminal of control module 131, for control the unlatching of control module 131 with It closes.

It includes: the first delay submodule 1321 that block of pixels reset signal, which obtains module 132, and XOR circuit 1322, second prolongs When submodule 1323, the second not circuit 1324, the second AND gate circuit 1325 and OR circuit 1326.Wherein,

The input terminal of first delay submodule 1321 and the input terminal and Global reset switch 136 of XOR circuit 1322 connect It connects, the output end of the first delay submodule 1321 is connect with the input terminal of NOR gate circuit 1322；The output of XOR circuit 1322 End is connect with the input terminal of OR circuit 1326.

Block of pixels reset signal obtain module 132 respectively with the first end of m switch module 133 and control module 131 Input terminal connection, comprising:

Input terminal and the control module 131 of the input terminal and the second AND gate circuit 1325 of second delay submodule 1323 it is defeated Enter end connection, the output end of the second delay submodule 1323 is connect with the input terminal of the second not circuit 1324, the second NOT gate electricity The output end on road 1324 is connect with the input terminal of the second AND gate circuit 1325, the output end of the second AND gate circuit 1325 and or door The input terminal of circuit 1326 connects, and the output end of OR circuit 1326 is connect with the first end of m switch module 133 respectively.

Specifically, Global reset switch 136 controls the open and close of control module 131.It does not work 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, so that m Block of pixels 11 does not work.When needing control module 131 to start to work, Global reset switch 136 is sent to control module 131 High level signal after control module 131 receives the high level signal of the transmission of Global reset switch 136, starts to carry out block of pixels 11 selection.

It should be noted that the sequence that control module 131 selects block of pixels 11 to carry out pixel exposure processing can be user Pre-set, the present invention is without limitation.

Since block of pixels reset signal obtains module 132 for obtaining reset signal, in order not to increase additional device, In When Global reset switch 136 controls the work of control module 131, Global reset switch 136 can be obtained to block of pixels reset signal Module 132 sends reset signal.Therefore, the input terminal and exclusive or electricity of Global reset switch 136 and the first delay submodule 1321 The input terminal on road 1322 connects, so as to which the reset signal of Global reset switch 136 is sent to the one of XOR circuit 1322 A input terminal, and the reset signal of Global reset switch 136 is sent to exclusive or by the delay of the first delay submodule 1321 Another input terminal of circuit 1322, so that the output end output reset signal of XOR circuit 1322 is to OR circuit 1326 An input terminal.In the present invention, work initially in control module 131, control module 131 select the 1st block of pixels 11 into The processing of row pixel exposure.Before each pixel unit 12 to be exposed in the 1st block of pixels 11 has carried out pixel exposure processing, m The signal of the output end output of a block of pixels is that signal is not finished in exposure, this signal is high level signal.Due to the second delay The input terminal of module 1323 and an input terminal of the second AND gate circuit 1325 are connect with the input terminal of control module 131, this When, the input terminal of control module 131 receives the high level signal of the first AND gate circuit 134 output, therefore the second delay submodule The input terminal of block 1323 and an input terminal of the second AND gate circuit 1325 receive high level signal, the second delay submodule After 1323 receive high level signal, output end is connect with the input terminal of the second not circuit 1323, therefore the second delay Received high level signal can be sent to the second not circuit 1323 by module 1323, and the second not circuit 1323 exports low electricity Ordinary mail number, and it is sent to another input terminal of the second AND gate circuit 1325.At this point, the second AND gate circuit 1325 exports low level Signal is to another input terminal of OR circuit 1326, and OR circuit 1326 receives reset signal and low by input terminal at this time Level signal, 1326 output reset signal of OR circuit.Due to OR circuit 1326 output end respectively with m switch module 133 first end connection, therefore, after control module 131 controls the 1st closure of switch module 133, the 1st switch module 133 Reset signal can be sent to the reset terminal of the 1st block of pixels 11.

Since Global reset switch 136 is after control control module 131 works, the signal of output no longer changes, High level signal is as exported, so, two input terminal received signals of XOR circuit 1322 are identical, therefore, exclusive or Circuit 1322 in the course of subsequent work, exports low level signal.And block of pixels 11 is carrying out pixel exposure signal Afterwards, it is end exposure signal that signal jump, which can be not finished, in the signal of output end output by exposure, i.e., to be jumped by high level signal For low level signal, in this way, block of pixels reset signal, which obtains module 132, can jump this signal and be used as next block of pixels 11 Reset signal.For example, after each pixel unit 12 to be exposed in ith pixel block 11 completes pixel exposure processing, i-th The output end of block of pixels 11 exports end exposure signal, as output low level signal, other block of pixels export high level letter Number.At this point, the first AND gate circuit 134 exports low level signal, and it is transmitted to the input terminal of control module 131.In this way, due to Two delay submodules 1323 and an input terminal of the second AND gate circuit 1325 are connect with the input terminal of control module 131, therefore The skip signal of first AND gate circuit 134 output also can be transmitted to an input terminal of the second AND gate circuit 1325, and pass through the Two delay submodules 1323 and the second not circuit 1323 are transmitted to another input terminal of the second AND gate circuit 1325, so that the The output end output reset signal of two AND gate circuits 1325, and reset signal is sent to OR circuit 1326, so that or 1326 output reset signal of gate circuit.Due to the output end first end with m switch module 133 respectively of OR circuit 1326 Connection, therefore, after control module 131 controls the closure of i+1 switch module 133, i+1 switch module 133 can be incited somebody to action Reset signal is sent to the reset terminal of i+1 block of pixels 11.It so, can be at i-th by above-mentioned each submodule After block of pixels 11 exports end exposure signal, the reset signal of i+1 block of pixels 11 can be generated, each block of pixels is answered The timing diagram of position signal, as shown in Figure 8.

A kind of image sensing device of the invention, image sensing device include m block of pixels, include in each block of pixels At least two adjacent pixel units to be exposed, and select different block of pixels to carry out in m block of pixels by block menu member Pixel exposure processing is handled to realize the pixel exposure for carrying out individual element block to m block of pixels as unit of block of pixels. So, since the luminance difference of adjacent pixel unit to be exposed is away from smaller, adjacent pixel unit to be exposed is divided to In one block of pixels, so that the brightness light and shade gap of all pixel units to be exposed in block of pixels is small, it is possible to reduce block of pixels The waiting time of interior pixel unit to be exposed, so as to shorten the exposure of all pixel units to be exposed in image sensing device Time, and then the frame per second of image sensing device is improved, improve convenient user experience in time.

As shown in figure 9, the present invention provides a kind of image processing method, filled applied to image sensing described in above-described embodiment Set, image processing method the following steps are included:

Step S11, block menu member receives the end exposure signal that (i-1)-th block of pixels is sent.

Wherein, i is the integer for being not more than m greater 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 A 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 terminal 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 unit 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, to block menu member send end exposure signal, 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 methods, are applied to described in above-described embodiment Image sensing device, image processing method the following steps are included:

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 terminal 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 (i-1)-th block of pixels is sent.

Wherein, i is the integer for being not more than m greater 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 A 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 terminal 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 It number is the signal for indicating block of pixels and being handled without pixel exposure；M is the line number for the array that pixel unit 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, to block menu member send end exposure signal, 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 of the invention and method, image sensing device include m block of pixels, in each block of pixels Include at least two adjacent pixel units to be exposed, and different pixels is selected in m block of pixels by block menu member Block carries out pixel exposure processing, exposes to realize the pixel for carrying out individual element block to m block of pixels as unit of block of pixels Light processing.So, since the luminance difference of adjacent pixel unit to be exposed is away from smaller, by adjacent pixel unit to be exposed It is divided in a block of pixels, so that the brightness light and shade gap of all pixel units to be exposed in block of pixels is small, it is possible to reduce The waiting time of pixel unit to be exposed in block of pixels, so as to shorten all pixel units to be exposed in image sensing device Time for exposure, and then improve the frame per second of image sensing device, improve convenient user experience in time.

In conclusion the pixel unit to be exposed of adjacent rows is divided in a block of pixels by the present invention, so that block of pixels In all pixel units to be exposed brightness light and shade gap it is small, it is possible to reduce in block of pixels when the waiting of pixel unit to be exposed Between.So the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.

The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as At all equivalent modifications or change, should be covered by the claims of the present invention.

Claims

1. a kind of image sensing device, which is characterized in that described image sensing device includes:

M block of pixels, wherein include at least two adjacent pixel units to be exposed in the block of pixels；It is described to be exposed Pixel unit 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 terminal obtain, determines exposure signal to be sent, sends the exposure to be sent by output end Signal；M is the integer greater than 0；

Block menu member connect with the input, output end of m block of pixels and reset terminal respectively, is used for according to the m block of pixels Output end output exposure signal, the block of pixels of progress pixel exposure processing is determined in the m block of pixels, and to described The reset terminal for carrying out the block of pixels of pixel exposure processing sends reset signal, to the block of pixels for carrying out pixel exposure processing Input terminal send exposure commencing signal, into m block of pixels except it is described progress pixel exposure processing block of pixels in addition to other The input terminal of block of pixels, which is sent, exposes non-commencing signal；

The input terminal of each pixel unit to be exposed and output end are in turn connected to form exposure signal output team in the block of pixels Column；The input terminal of the exposure signal output queue be the block of pixels input terminal, the exposure signal output queue it is defeated Outlet is the output end of the block of pixels, and the reset terminal of the exposure signal output queue is the reset terminal of the block of pixels.

2. 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,

The output end of the control module is connect with the control terminal of the m switch module respectively；

It is defeated with the first end of the m switch module and the control module respectively that the block of pixels reset signal obtains module Enter end connection；

Described piece of menu member connect with the input, output end of the m block of pixels and reset terminal respectively and includes:

The input terminal of the control module is connect with the output end of the m block of pixels respectively, the output end of the control module It is connect respectively with the input terminal of the m block of pixels；

The reset terminal of the m block of pixels is connect with the second end of the m switch module respectively, and the reset of a block of pixels End is only connect with the second end of a switch module.

3. image sensing device according to claim 2, it is characterised in that: described piece of menu member further include: first and door Circuit and m the first not circuits；

The input terminal of the control module is connect with the output end of the m block of pixels respectively

The output end of the m block of pixels is connect with the input terminal of first AND gate circuit respectively, the control module it is defeated Enter end to connect with the output end of first AND gate circuit；

The output end of the control module is connect with the input terminal of the m block of pixels respectively

The output end of the control module is connect with the input terminal of the m the first not circuits respectively, the m the first NOT gates The output end of circuit is connect with the input terminal of the m block of pixels respectively, and the output end of first not circuit is only with one The input terminal of a block of pixels connects.

4. image sensing device according to claim 3, it is characterised in that: described piece of menu member further include:

Global reset switch, connect, for controlling the open and close of the control module with the input terminal of the control module；

It includes: the first delay submodule that the block of pixels reset signal, which obtains module, XOR circuit, the second delay submodule, the Two not circuits, the second AND gate circuit and OR circuit；Wherein,

The input terminal of the first delay submodule and the input terminal of the XOR circuit and Global reset switch connect, institute The output end for stating the first delay submodule is connect with the input terminal of the XOR circuit；The output end of the XOR circuit with it is described The input terminal of OR circuit connects；

It is defeated with the first end of the m switch module and the control module respectively that the block of pixels reset signal obtains module Enter end connection, comprising:

The input terminal and the input terminal of the second AND gate circuit and the input terminal of the control module of the second delay submodule connect It connects, the output end of the second delay submodule is connect with the input terminal of second not circuit, second not circuit Output end connect with the input terminal of second AND gate circuit, the output end of second AND gate circuit and the OR circuit Input terminal connection, the output end of the OR circuit connect with the first end of the m switch module respectively.

5. image sensing device according to claim 1, which is characterized in that

The pixel unit to be exposed includes: pulse width modulation (PWM) pixel and third AND gate circuit；Wherein,

The PWM pixel is connect with the input terminal of the third AND gate circuit.

6. image sensing device according to claim 1, which is characterized in that the exposure signal includes: end exposure letter Number, signal is not finished in exposure.

7. image sensing device according to claim 6, which is characterized in that

Described piece of menu member, specifically for receive (i-1)-th block of pixels output end send end exposure signal after, In It determines that ith pixel block carries out pixel exposure processing in the m block of pixels, and is sent out to the reset terminal of the ith pixel block Reset signal is sent, the input terminal of Xiang Suoshu ith pixel block sends exposure commencing signal, removes described i-th into m block of pixels The input terminal of other block of pixels except block of pixels, which is sent, exposes non-commencing signal；Receiving the defeated of the ith pixel block After outlet exports 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.

8. image sensing device according to claim 1-7, which is characterized in that

The array that the pixel unit to be exposed is formed is m*m array；

The number for the pixel unit to be exposed for including in the block of pixels is m.

9. a kind of image processing method, which is characterized in that it is applied to the described in any item image sensing devices of claim 1-8, Described image processing method the following steps are included:

Block menu member receives the end exposure signal that (i-1)-th block of pixels is sent, wherein i is the integer for being not more than m greater 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 sends 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 Stating the non-commencing signal of exposure is the signal for indicating block of pixels and handling without pixel exposure；M is what pixel unit to be exposed was formed The line number of array is greater than 0 integer；

The ith pixel root tuber is resetted according to the reset signal, and is exposed according to exposure commencing signal to pixel Processing sends end exposure signal to described piece of menu member and after pixel exposure, 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.

10. image processing method according to claim 9, it is characterised in that: receive (i-1)-th in described piece of menu member Before the end exposure signal that block of pixels is sent, described image processing method further include:

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 terminal of other block of pixels into m block of pixels in addition to the 1st block of pixels sends and exposes non-commencing signal.