CN109547716A - Row choosing column arbitration AER imaging sensor event transmitting device and method - Google Patents
Row choosing column arbitration AER imaging sensor event transmitting device and method Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
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Abstract
The present invention relates to analogue layout fields, to omit row arbitration structure, reduce arbitration time, and the row selects signal of the adaptive duration used can save line election time, further decrease delay, promote operating rate.Thus, the technical solution adopted by the present invention is that, row choosing column arbitration AER imaging sensor event transmitting device and method, utilize pixel array, row modeling block, column arbitration modules and ranks coding module are realized, utilize the photosensitive generation event of pixel array, when row modeling block generates row k row selects signal, row address coding is carried out by ranks coding module, judge row k event number, then column request signal arbitration is carried out by column arbitration modules, the signal chosen carries out column address coding by ranks coding module, it arranges rank addresses signal and externally issues request signal, connect the design and manufacture occasion present invention is mainly applied to Analogous Integrated Electronic Circuits.
Description
Technical field
The present invention relates to analogue layout field, especially imaging sensors to read circuit field, and this method is answered
It is transmitted for AER (Address-event Representation, AER) vision sensor data.It is secondary more particularly to row choosing column
Cut out AER imaging sensor event transmitting device and method.
Background technique
Nowadays imaging sensor has become the every field for being applied to people's life, while people are also pursuing resolution ratio
Higher, power consumption is lower, the faster imaging sensor of speed.And traditional each frame of frame frequency imaging sensor all includes bulk redundancy
Data, this disadvantage constrain the promotion of its operating rate.So scientist develops a kind of asynchronous image sensing of bionical AER
Device only exports variation pixel, improves operating rate while reducing mass data.It can be applied to drive automatically
It sails, the field relatively high to rate request such as security protection tracing monitoring.
The event transmission mode of traditional AER imaging sensor ranks arbitration needs for a long time to carry out arbitration process, when right
When some pixel carries out event transmission, rest of pixels waiting is processed, and the time of waiting is with pixel array and event
The increase of rate and increase.So its speed advantage is gradually reduced when its work is in high incident rate environment, or even disappear.
Therefore it needs to solve the problems, such as this using the novel event transmission structure of one kind, guarantees that big array AER imaging sensor can be with
It works in high incident rate environment high speed.
Summary of the invention
In order to overcome the deficiencies of the prior art, the present invention is directed to propose a kind of novel row choosing column arbitration, row selects signal are adaptive
Row arbitration structure is omitted in the transmission mode for answering duration, reduces the arbitration time of half, and the adaptive duration used
Row selects signal can save line election time, further decrease delay, promote operating rate.For this purpose, the technical side that the present invention takes
Case is that row choosing column arbitration AER imaging sensor event transmission method utilizes pixel array, row modeling block, column arbitration modules and row
Column coding module is realized, is compiled when row modeling block generation row k row selects signal by ranks using the photosensitive generation event of pixel array
Code module carries out row address coding, judges row k event number, then carries out column request signal arbitration by column arbitration modules, selects
In signal column address coding is carried out by ranks coding module, arrange rank addresses signal and externally issue request signal, receive outer
The whether all externally transmission of row k event is judged after the confirmation signal of portion's feedback, is not transmitted all such as, is continued cycling through
Transmit work；If being all transmitted, row k row selects signal disappears, and generates+1 row row selects signal of kth, later repeated work.
Row modeling block is for realizing judging selected line event number and be sequentially generated row selects signal, and the module is by multiple phases
It is formed with modular circuit, workflow are as follows: for pixel array, when being transferred to row k, low effective initial signal A is by upper one
Transistor M1 is connected for generation when every trade selects blackout, and high effectively RS signal is drawn high, when signal A is drawn high, RS
Signal is continued to keep high potential by capacitor C, starts the event transmission work for carrying out row k；The input terminal of multi input and door is the
The low effective request signal of whole events of k row and signal A；After row k event is all transmitted, all column request letter
It number is raised, signal A is drawn high, and M2 is connected with door output signal for multi input, and RS signal is pulled low；Trigger failing edge D trigger
Work, is transferred to its end Q for high potential, and the end nQ is pulled low, and resets d type flip flop for t time delay module by delay time, nQ
Signal is drawn high, this signal B becomes next line row selects signal initial signal；Hereafter cycle operation.
Signal B delay time should be greater than pixel and receive row selects signal to the delay for generating request signal.
The retention time of capacitor c should be greater than the time that row k whole pixel generates event and is all transmitted.
Row choosing column arbitration AER imaging sensor event transmitting device, by pixel array, switched capacitor amplifier, ON/OFF
Comparator, row modeling block, column arbitration modules and ranks coding module composition, pixel array is always in photosensitive, photoelectric current logarithm turn
It is changed to photovoltage, voltage change is amplified by switched capacitor amplifier, ON/OFF comparator is subsequently entered and is judged,
When light intensity variation reaches comparator threshold, a pulse i.e. event is generated, when row selects signal chooses the row, which is believed
Number being transferred to arbitration modules is arbitrated, and arbitration modules give the right that the event occupies bus after choosing the event, later
Address information is encoded by coding module, and will be outside event message transmission to piece by bus；It is then returned to confirmation letter
It number eliminates and request signal and pixel to be resetted, carry out incident detection next time；Wherein, row modeling block workflow: work as kth
Row row selects signal generates, and carries out row address coding, judges row k event number, then carry out column request signal arbitration, choose
Signal carry out column address coding, arrange rank addresses signal externally issue request signal, receive external feedback confirmation signal it
The whether all externally transmission of row k event is judged afterwards, is not transmitted all such as, is continued cycling through transmission work；If all passing
It is finished into, row k row selects signal disappears, and generates+1 row row selects signal of kth, later repeated work.
Row modeling block is for realizing judging selected line event number and be sequentially generated row selects signal, and the module is by multiple phases
It is formed with circuit unit, single circuit unit structure are as follows: transistor M1 grid connects signal A, M1 source electrode, substrate, trigger input
End D connects high potential, and M1 drain electrode is connected with M2 source electrode, d type flip flop control terminal, capacitor C top crown, and M2 grid connects multi input and door
Output end, the input terminal of multi input and door is the column request signal of signal A and every row, and the inverse output terminal of d type flip flop passes through
Delay unit connects in reset terminal, and M1 drain signal, which is drawn, is used as RS signal, all N-type transistor Substrate grounds, P-type transistor
Substrate connects high potential, and for pixel array, when being transferred to row k, low effective initial signal A is disappeared by lastrow row selects signal
When generate, high effectively RS signal is drawn high in M1 conducting, starts the event transmission work for carrying out row k when signal A is drawn high
Make, RS signal continues to keep high potential by capacitor C, and multi input and the input terminal of door are the low effective request of whole events of row k
Signal and signal A, after row k event is all transmitted, all column request signals are raised, and signal A is drawn high, how defeated
Enter and M2 is connected with door output signal, RS signal is pulled low.The work of failing edge d type flip flop is triggered, high potential is transferred to its Q
End, the end nQ are pulled low, reset d type flip flop by time delay module, and nQ signal is drawn high, this signal B becomes next every trade choosing letter
Number initial signal, hereafter cycle operation.
The features of the present invention and beneficial effect are:
Present invention employs rows to select column arbitration structure, compared with traditional ranks arbitration structure, reduces the arbitration of half
Time, transmission rate is substantially increased, effect is especially prominent under the conditions of high incident rate.
Regular signal when row selects signal of the present invention uses adaptive avoids the row choosing in the case where every row incident rate is different
Waste of time improves transmission rate.
Detailed description of the invention:
Fig. 1 row choosing column arbitration AER image sensing structure chart.
Fig. 2 work flow diagram.
Fig. 3 row selects module circuit diagram.
Specific embodiment
Details are as follows for technical solution of the present invention:
1. main innovation structure is that row selects column arbitration structure, new A ER image sensor structure figure in the present invention
As shown in Figure 1, being mainly made of pixel array, row modeling block, column arbitration modules and ranks coding module.Its working principle is that:
For pixel array always photosensitive, photoelectric current Logarithm conversion is photovoltage, is put by switched capacitor amplifier to voltage change
Greatly, subsequent amplifier output voltage enters ON/OFF comparator and is judged, when light intensity variation reaches comparator threshold, generates
The event signal is transferred to arbitration modules and arbitrated by one pulse (i.e. event) when row selects signal chooses the row, arbitration
Module gives the right that the event occupies bus after choosing the event, is compiled later by coding module to address information
Code.And it will be outside event message transmission to piece by bus.Confirmation signal is then returned to eliminate request signal and answer pixel
Position carries out incident detection next time.Wherein row modeling block workflow is as shown in Figure 2: when the generation of row k row selects signal, carrying out
Row address coding, judges row k event number, then carries out column request signal arbitration, and the signal chosen carries out column address coding,
It arranges rank addresses signal and externally issues request signal, receive whether judge row k event after the confirmation signal of external feedback
All externally transmission, are not transmitted all such as, continue cycling through transmission work；If being all transmitted, row k row selects signal
It disappears, generates+1 row row selects signal of kth, later repeated work.The arbitration practice for both having saved half in this way, further through adaptive
The row selects signal of duration avoids the waste of line election time, further reduces event transmission delay.
2. wherein row modeling block mainly realizes the function of judging selected line event number and be sequentially generated row selects signal.It should
Module is made of multiple same circuits units.Single circuit unit is as shown in Figure 3: wherein transistor M1 grid connects signal A, the source M1
Pole, substrate, trigger input D connect high potential.M1 drain electrode is connected with M2 source electrode, d type flip flop control terminal, capacitor C top crown.M2
Grid connects the output end of multi input and door, and the input terminal of multi input and door is the column request signal of signal A and every row.D type flip flop
Inverse output terminal connect in reset terminal by delay unit.M1 drain signal, which is drawn, is used as RS signal.All N-type crystal in figure
Pipe Substrate ground, P-type transistor substrate connect high potential.It is assumed to be a nxn pixel array, when being transferred to row k, starting letter
Number A (low effectively) is generated when being disappeared by lastrow row selects signal, and M1 conducting draws high RS (Gao Youxiao) signal, when signal A is drawn high
When (RS signal by capacitor C continue keep high potential) carry out row k event transmit work.Multi input and door it is defeated
Enter the whole event request signals (low effective) and signal A that end is row k.After row k event is all transmitted, own
Column request signal be raised, signal A is drawn high, and M2 is connected with door output signal for multi input, and RS signal is pulled low.Triggering decline
It works along d type flip flop, high potential is transferred to Q, nQ is pulled low, and (delay time t) answers d type flip flop by time delay module
Position, nQ signal are drawn high.This signal B becomes next line row selects signal initial signal.Hereafter cycle operation.
3. it should be noted that two o'clock:
Because when row selects signal starts effective, column request signal generates (for high invalid state) not yet, so
Here signal B delay time should be greater than pixel and receive row selects signal to the delay for generating request signal, and guarantee does not occur
The mistake that next line is jumped to without transmitting event occurs.
The retention time of capacitor c should be greater than the time that row k whole pixel generates event and is all transmitted,
Event can be led to the problem of to avoid single row of pixels whole in this way and transmit incomplete.
For the pixel array of a 128x128, the time of external reading event is 5ns, due to ranks arbitration modules knot
Structure is identical, so the single event delay of ranks arbitration is all 2.3ns, pixel receives row selects signal prolonging to generation request signal
When be 0.1ns.
When incident rate is 80%,
Using traditional structure, individual event transmission delay is T=5+2.3+2.3+0.1=9.7ns, and event transmission rate is
103meps；Structure is selected using row, individual event transmission delay is T=5+2.3+0.1=7.4ns, and event transmission rate is
135meps；Speed promotes 32%.
Claims (5)
1. a kind of row choosing column arbitration AER imaging sensor event transmission method, characterized in that using pixel array, row modeling block,
Column arbitration modules and ranks coding module are realized, using the photosensitive generation event of pixel array, when row modeling block generates the choosing of row k row
Signal carries out row address coding by ranks coding module, judges row k event number, then carries out column by column arbitration modules and asks
Signal arbitration is sought, the signal chosen carries out column address coding by ranks coding module, and arrangement rank addresses signal, which externally issues, asks
Signal is sought, receives to judge the whether all externally transmission of row k event after the confirmation signal of external feedback, such as without all transmission
It completes, continues cycling through transmission work；If being all transmitted, row k row selects signal disappears, and generates+1 row row selects signal of kth, it
Repeated work afterwards.
2. row choosing column arbitration AER imaging sensor event transmission method as described in claim 1, characterized in that row modeling block
For realizing judging selected line event number and be sequentially generated row selects signal, which is made of multiple equal modules circuits,
Workflow are as follows: for pixel array, when being transferred to row k, when low effective initial signal A is disappeared by lastrow row selects signal
It generates, transistor M1 is connected, high effectively RS signal is drawn high, when signal A is drawn high, RS signal is by capacitor C after continuation of insurance
High potential is held, the event transmission work for carrying out row k is started；Multi input, which is that whole events of row k are low with the input terminal of door, to be had
Imitate request signal and signal A；After row k event is all transmitted, all column request signals are raised, and signal A is drawn
M2 is connected with door output signal for height, multi input, and RS signal is pulled low；The work of failing edge d type flip flop is triggered, high potential is transmitted
Its end Q is given, and the end nQ is pulled low, and d type flip flop is resetted for t time delay module by delay time, nQ signal is drawn high, this signal B
As next line row selects signal initial signal；Hereafter cycle operation.
3. row choosing column arbitration AER imaging sensor event transmission method as described in claim 1, characterized in that signal B delay
Time should be greater than pixel and receive row selects signal to the delay for generating request signal；The retention time of capacitor c should be greater than kth
The time that row whole pixel generates event and is all transmitted.
4. a kind of row choosing column arbitration AER imaging sensor event transmitting device, characterized in that row choosing column arbitration AER image sensing
Device event transmitting device, by pixel array, switched capacitor amplifier, ON/OFF comparator, row modeling block, column arbitration modules and row
Column coding module composition, pixel array is always photosensitive, and photoelectric current Logarithm conversion is photovoltage, by switched capacitor amplifier pair
Voltage change amplifies, and subsequently enters ON/OFF comparator and is judged, when light intensity variation reaches comparator threshold, generates
The event signal is transferred to arbitration modules and arbitrated by one pulse, that is, event when row selects signal chooses the row, arbitrates mould
Block gives the right that the event occupies bus after choosing the event, is encoded later by coding module to address information,
And it will be outside event message transmission to piece by bus；Confirmation signal is then returned to eliminate request signal and reset pixel,
Carry out incident detection next time；Wherein, row modeling block workflow: when the generation of row k row selects signal, carrying out row address coding,
Judge row k event number, then carry out column request signal arbitration, the signal chosen carries out column address coding, with arranging ranks
Whether location signal externally issues request signal, receive to judge row k event all to unofficial biography after the confirmation signal of external feedback
It is defeated, it is not transmitted all such as, continues cycling through transmission work；If being all transmitted, row k row selects signal disappears, and generates
+ 1 row row selects signal of kth, later repeated work.
5. row choosing column arbitration AER imaging sensor event transmitting device as claimed in claim 4, characterized in that row modeling block
For realizing judging selected line event number and be sequentially generated row selects signal, which is made of multiple same circuits units,
Single circuit unit structure are as follows: transistor M1 grid meets signal A, and M1 source electrode, substrate, trigger input D connect high potential,
M1 drain electrode is connected with M2 source electrode, d type flip flop control terminal, capacitor C top crown, and M2 grid connects the output end of multi input and door,
The input terminal of multi input and door is the column request signal of signal A and every row, and the inverse output terminal of d type flip flop connects by delay unit
In reset terminal, M1 drain signal, which is drawn, is used as RS signal, all N-type transistor Substrate grounds, and P-type transistor substrate connects high electricity
Position, for pixel array, when being transferred to row k, low effective initial signal A is generated when being disappeared by lastrow row selects signal, M1
High effectively RS signal is drawn high in conducting, starts the event transmission work for carrying out row k when signal A is drawn high, RS signal by
Capacitor C continues to keep high potential, and multi input and the input terminal of door are the low effective request signal of whole events of row k and signal A,
After row k event is all transmitted, all column request signals are raised, and signal A is drawn high, and multi input and door output are believed
Number M2 is connected, RS signal is pulled low.The work of failing edge d type flip flop is triggered, high potential is transferred to its end Q, the end nQ is drawn
It is low, d type flip flop is resetted by time delay module, nQ signal is drawn high, this signal B becomes next line row selects signal initial signal, this
Cycle operation afterwards.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110536083A (en) * | 2019-08-30 | 2019-12-03 | 上海芯仑光电科技有限公司 | A kind of imaging sensor and image capturing system |
| CN111770245A (en) * | 2020-07-29 | 2020-10-13 | 中国科学院长春光学精密机械与物理研究所 | Pixel structure of retina-like image sensor |
| CN112399112A (en) * | 2019-08-12 | 2021-02-23 | 天津大学青岛海洋技术研究院 | Arbitration mode combining wheel weight and weight |
| CN112399114A (en) * | 2019-08-13 | 2021-02-23 | 天津大学青岛海洋技术研究院 | Rapid DVS image sensor column signal reading method |
| CN112738432A (en) * | 2019-10-28 | 2021-04-30 | 天津大学青岛海洋技术研究院 | Event threshold value self-adaptive dynamic vision sensor |
| CN112732612A (en) * | 2019-10-28 | 2021-04-30 | 天津大学青岛海洋技术研究院 | Double-side read address event representation transmission protocol circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070091191A1 (en) * | 2005-10-24 | 2007-04-26 | Yusuke Oike | Solid-state imaging device, method of driving solid-state imaging device, and imaging apparatus |
| US8049799B2 (en) * | 2008-04-11 | 2011-11-01 | Canon Kabushiki Kaisha | Method of driving solid-state imaging apparatus |
| CN103595931A (en) * | 2013-11-05 | 2014-02-19 | 天津大学 | CMOS asynchronous time domain image sensor capable of achieving real-time time stamp |
| CN106127800A (en) * | 2016-06-14 | 2016-11-16 | 天津大学 | Real-time many object tracking methods based on AER imageing sensor and device |
| WO2017134969A1 (en) * | 2016-02-03 | 2017-08-10 | Sony Corporation | Image sensor and electronic device with active reset circuit, and method of operating the same |
| CN107302695A (en) * | 2017-05-31 | 2017-10-27 | 天津大学 | A kind of electronics compound eye system based on bionic visual mechanism |
-
2018
- 2018-10-18 CN CN201811212729.XA patent/CN109547716B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070091191A1 (en) * | 2005-10-24 | 2007-04-26 | Yusuke Oike | Solid-state imaging device, method of driving solid-state imaging device, and imaging apparatus |
| US8049799B2 (en) * | 2008-04-11 | 2011-11-01 | Canon Kabushiki Kaisha | Method of driving solid-state imaging apparatus |
| CN103595931A (en) * | 2013-11-05 | 2014-02-19 | 天津大学 | CMOS asynchronous time domain image sensor capable of achieving real-time time stamp |
| WO2017134969A1 (en) * | 2016-02-03 | 2017-08-10 | Sony Corporation | Image sensor and electronic device with active reset circuit, and method of operating the same |
| CN106127800A (en) * | 2016-06-14 | 2016-11-16 | 天津大学 | Real-time many object tracking methods based on AER imageing sensor and device |
| CN107302695A (en) * | 2017-05-31 | 2017-10-27 | 天津大学 | A kind of electronics compound eye system based on bionic visual mechanism |
Non-Patent Citations (3)
| Title |
|---|
| VINCENT CHAN,CRAIG JIN,ANDRÉ VAN SCHAIK: "An Address-Event Vision Sensor for MultipleTransient Object Detection", 《IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS》 * |
| 卢成业，高志远，徐江涛: "用于特征提取的小尺寸事件型卷积处理器", 《传感技术学报》 * |
| 杨帅，胡燕翔，徐江涛: "AER时域视觉传感器总线仲裁建模与仿真分析", 《天津工业大学学报》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112399112A (en) * | 2019-08-12 | 2021-02-23 | 天津大学青岛海洋技术研究院 | Arbitration mode combining wheel weight and weight |
| CN112399114A (en) * | 2019-08-13 | 2021-02-23 | 天津大学青岛海洋技术研究院 | Rapid DVS image sensor column signal reading method |
| CN112399114B (en) * | 2019-08-13 | 2022-12-13 | 天津大学青岛海洋技术研究院 | Rapid DVS image sensor column signal reading method |
| CN110536083A (en) * | 2019-08-30 | 2019-12-03 | 上海芯仑光电科技有限公司 | A kind of imaging sensor and image capturing system |
| CN110536083B (en) * | 2019-08-30 | 2020-11-06 | 上海芯仑光电科技有限公司 | Image sensor and image acquisition system |
| CN112738432A (en) * | 2019-10-28 | 2021-04-30 | 天津大学青岛海洋技术研究院 | Event threshold value self-adaptive dynamic vision sensor |
| CN112732612A (en) * | 2019-10-28 | 2021-04-30 | 天津大学青岛海洋技术研究院 | Double-side read address event representation transmission protocol circuit |
| CN112738432B (en) * | 2019-10-28 | 2022-06-21 | 天津大学青岛海洋技术研究院 | Event threshold value self-adaptive dynamic vision sensor |
| CN111770245A (en) * | 2020-07-29 | 2020-10-13 | 中国科学院长春光学精密机械与物理研究所 | Pixel structure of retina-like image sensor |
| CN111770245B (en) * | 2020-07-29 | 2021-05-25 | 中国科学院长春光学精密机械与物理研究所 | Pixel structure of retina-like image sensor |
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Effective date of registration: 20230324 Address after: 300392 Industrial Incubation 5-1559, North 2-204, No. 18, Haitai West Road, Huayuan Industrial Zone, Binhai New Area, Tianjin Patentee after: Tianjin Haixin Optoelectronic Technology Co.,Ltd. Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |