CN116242480A - Signal acquisition circuit, method and device and board card - Google Patents
Signal acquisition circuit, method and device and board card Download PDFInfo
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- CN116242480A CN116242480A CN202111492445.2A CN202111492445A CN116242480A CN 116242480 A CN116242480 A CN 116242480A CN 202111492445 A CN202111492445 A CN 202111492445A CN 116242480 A CN116242480 A CN 116242480A
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- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 6
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- 230000003287 optical effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
- G01J2001/4446—Type of detector
- G01J2001/446—Photodiode
Abstract
The invention relates to a signal acquisition circuit, a method, a device and a board card, which control corresponding rows of a photodiode array to be in a signal acquisition state according to row driving signals by using M driving elements, and realize the rapid switching of the working state of each row of photodiodes of the photodiode array by using the driving elements, so as to improve the signal acquisition efficiency; and, this application utilizes N to amplify the photoelectric signal of each row output of photodiode array respectively to realize the quick collection of photoelectric signal, for prior art, the components and parts quantity that signal acquisition circuit of this application involved are fewer, and the volume of the circuit board that forms is littleer, can effectively reduce signal acquisition circuit's manufacturing cost.
Description
Technical Field
The present invention relates to the field of signal acquisition, and in particular, to a signal acquisition circuit, method, apparatus and board.
Background
The existing photoelectric signal acquisition circuit generally comprises a plurality of photodiodes and a plurality of triodes, wherein each photodiode is matched with one triode to acquire a photoelectric signal. However, the signal acquisition circuit has a large number of elements, and the circuit board generated by the signal acquisition circuit has a large volume and high production cost; and, every time when gathering photoelectric signal, all need wait for triode to be in steady state, signal acquisition time is longer.
Disclosure of Invention
The embodiment of the application provides a signal acquisition circuit, a method, a device and a board card, which can reduce the production cost of the signal acquisition circuit and improve the signal acquisition efficiency. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a signal acquisition circuit, including: an M x N photodiode array consisting of at least two photodiodes, M driving elements, and N amplifying elements; wherein M is the number of rows of the photodiode array, and N is the number of columns of the photodiode array;
the anodes of the photodiodes of each row of the photodiode array are connected with the second end of one driving element, and the cathodes of the photodiodes of each column of the photodiode array are connected with the input end of one amplifying element; the first end of the driving element is connected with the controller, and the driving element responds to the row driving signal sent by the controller and applies a reverse bias voltage signal to the photodiodes of the corresponding row, so that the photodiodes of at least one row in the photodiode array are in a signal acquisition state;
the amplifying element amplifies the photoelectric signal acquired by the photodiode and outputs the amplified photoelectric signal.
In a second aspect, an embodiment of the present application provides a signal acquisition method, including the following steps:
outputting a row driving signal to the signal acquisition circuit according to any one of the above by using a controller, so that photodiodes of at least one row in the photodiode array are in a signal acquisition state;
and collecting photoelectric signals by using the signal collecting circuit.
In a third aspect, an embodiment of the present application provides a signal acquisition device, including a controller and a signal acquisition circuit as described in any one of the preceding claims, where the controller is connected to a first end of the driving element.
In a fourth aspect, an embodiment of the present application provides a board, including a signal output end and a signal collecting device as described above, where the signal output end is connected to the output end of the amplifying element
In the method, the corresponding rows of the photodiode array are controlled to be in a signal acquisition state by M driving elements according to row driving signals, and the driving elements can be used for realizing the rapid switching of the working states of the photodiodes of each row of the photodiode array, so that the signal acquisition efficiency is improved; and, this application utilizes N to amplify the photoelectric signal of each row output of photodiode array respectively to realize the quick collection of photoelectric signal, for prior art, the components and parts quantity that signal acquisition circuit of this application involved are fewer, and the volume of the circuit board that forms is littleer, can effectively reduce signal acquisition circuit's manufacturing cost.
For a better understanding and implementation, the present invention is described in detail below with reference to the drawings.
Drawings
FIG. 1 is a schematic diagram of a conventional signal acquisition circuit;
FIG. 2 is a schematic diagram of a signal acquisition circuit according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of a signal acquisition circuit in one embodiment of the invention;
FIG. 4 is a circuit diagram of a signal acquisition circuit in another embodiment of the present invention;
FIG. 5 is a flow chart of a signal acquisition method according to an embodiment of the invention;
FIG. 6 is a schematic diagram of a signal acquisition device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a board according to an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the following detailed description of the embodiments of the present application will be given with reference to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the embodiments of the present application, are within the scope of the embodiments of the present application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims. In the description of this application, it should be understood that the terms "first," "second," "third," and the like are used merely to distinguish between similar objects and are not necessarily used to describe a particular order or sequence, nor should they be construed to indicate or imply relative importance. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
Furthermore, in the description of the present application, unless otherwise indicated, "a number" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
As shown in fig. 1, the signal acquisition circuit is an existing signal acquisition circuit, each photodiode of the signal acquisition circuit is matched with an amplifying triode to acquire photoelectric signals, when the signal acquisition circuit is used, the same row of photodiodes and triodes are given a positive voltage by using row driving signals C01-C04 to enable the same row of photodiodes and triodes to have normal working conditions, each photodiode of the selected row is subjected to illumination to generate photocurrent, amplified by the paired triodes and then output, and the current signals amplified by the triodes are converted into voltage signals through sampling resistors R17-R20 for use by subsequent circuits.
However, each photodiode of the signal acquisition circuit needs to be matched with a triode to acquire the photoelectric signal, and the circuit has more related components, is inconvenient in layout of a circuit board and has higher production cost; and when the working state of the photodiodes of each row is switched, each triode needs to be waited for to be converted into a stable working state from the state of just powering on, the signal acquisition time is longer, and the signal acquisition efficiency is lower.
Accordingly, in view of the above-mentioned problems, as shown in fig. 2, an embodiment of the present application provides a signal acquisition circuit, including: an M x N photodiode array 1, M driving elements 2, and N amplifying elements 3;
wherein, the m×n photodiode array 1 includes at least two photodiodes, M is the number of rows of the photodiode array 1, and N is the number of columns of the photodiode array 1; the anodes of the photodiodes of each row of the photodiode array 1 are connected with the second end of one driving element, and the cathodes of the photodiodes of each column of the photodiode array 1 are connected with the input end of one amplifying element; the first end of the driving element 2 is connected with a controller, and the output end of the amplifying element 3 outputs an amplified photoelectric signal.
The driving element 2 applies a reverse bias signal to photodiodes of a corresponding row in response to a row driving signal transmitted from the controller so that photodiodes of at least one row in the photodiode array are in a signal acquisition state. The user can control a certain row in the photodiode array 1 to be in a signal acquisition state according to the requirement, or can also control a certain row in the photodiode array 1 to be in a signal acquisition state.
Specifically, the driving element 2 is configured to apply a reverse bias signal to the photodiodes of the corresponding row, thereby controlling the photodiodes of the corresponding row in the photodiode array 1 to be in a signal acquisition state in which an optical signal can be received. The driving element 2 may be a switch, a diode, a relay, a triode, a MOS transistor, a combination thereof, or other driving elements that satisfy the above functions, when the driving element 2 is a switching element such as a triode, the driving element 2 may be connected to a reverse bias power supply of the photodiode array 1, the driving element 2 is turned on or off according to a row driving signal of the controller, and controls whether to apply a reverse bias signal to photodiodes of a corresponding row of the photodiode array, for example, the driving element 2 is turned on after receiving a high-level row driving signal, a photodiode of a certain row of the photodiode array 1 is connected to the reverse bias power supply, and a photodiode of a certain row of the photodiode array is applied with the reverse bias signal, so that the photodiodes of the row are in a signal collecting state; alternatively, the driving element 2 may be turned on after receiving the low-level row driving signal, where the photodiodes of a certain row in the photodiode array are connected to a reverse bias power supply, and the photodiodes of a certain row in the photodiode array are applied with a reverse bias signal, so that the photodiodes of the row are in a signal collecting state.
The amplifying element 3 is used for amplifying the photoelectric signal output by the photodiode, so that the photoelectric signal is easier to identify and apply by a subsequent circuit. The amplifying element may be a triode, an amplifier or other amplifying element which satisfies the above functions.
The working process of the signal acquisition circuit is as follows:
when the driving element receives a row driving signal of the controller, the photodiodes of the corresponding row in the photodiode array are controlled to apply reverse bias signals, so that the photodiodes of the row have normal working voltage conditions (namely reverse bias states) and are in a signal acquisition state, and photocurrents generated after the photodiodes receive illumination are amplified by the amplifying element and then output to a subsequent circuit. The driving element which does not receive the row driving signal of the controller, and the photodiodes of the corresponding row cannot work normally and cannot receive the optical signal normally.
In the embodiment of the application, the M driving elements are used for controlling the corresponding rows of the photodiode array to be in the signal acquisition state according to the row driving signals, and the driving elements are used for realizing the rapid switching of the working states of the photodiodes of each row of the photodiode array, so that the signal acquisition efficiency is improved, the working states of the photodiode array can be adjusted more rapidly, and the signal acquisition efficiency is improved; and, this application utilizes N to amplify the photoelectric signal of each row output of photodiode array respectively to realize the quick collection of photoelectric signal, for prior art, the components and parts quantity that signal acquisition circuit of this application involved are fewer, and the volume of the circuit board that forms is littleer, can effectively reduce signal acquisition circuit's manufacturing cost.
As shown in fig. 3, the signal acquisition circuit according to one embodiment of the present application includes a photodiode array VD1 to VD16 of 4*4, NPN transistors Q21 to Q24, PNP transistors Q25 to Q27, capacitors C1 to C2, and resistors R31 to R42;
the anodes of the photodiodes of each row of the photodiode array are connected with the collector of an NPN triode, the base of each NPN triode is connected with the controller through a resistor (R31-R34), the emitters of the NPN triodes Q21-Q24 are grounded, the cathodes of the photodiodes of the same row of the photodiode array are connected with the base of a PNP triode, the bases of the PNP triodes Q25-Q27 are grounded through a resistor (R35-R38), the emitters of the PNP triodes Q25-Q27 are connected with the power supply, the collectors of the PNP triodes Q25-Q27 are grounded through a resistor (R39-R42), and the collectors of the PNP triodes Q25-Q27 output amplified photoelectric signals H1-H4. The first end of the capacitor C1 is respectively connected with the first end of the capacitor C2, the emitters of the PNP triodes Q25-Q27 and the power supply, and the second end of the capacitor C1 and the second end of the capacitor C2 are grounded.
The NPN triodes Q21-Q24 are used as driving elements of the photodiode array, and are used for driving the photodiodes of the corresponding rows to be in a working state according to row driving signals (C01-C04) of the controller, when the NPN triodes corresponding to a certain row are conducted, the potential of the anodes of the photodiodes of the same row is pulled down by the conducted NPN triodes, the cathodes of the photodiodes obtain a pulled-up level signal from the PNP triodes, so that the photodiodes have normal working voltage conditions and are in a signal acquisition state, and photocurrents generated after the photodiodes receive illumination are amplified by the PNP triodes and are converted into voltage signals (H1-H4) by the resistors R39-R42 to be output to a subsequent circuit. When the NPN triode corresponding to a certain row is disconnected, the photodiode of the row is in a floating state, and cannot normally receive optical signals. The PNP triode is used for amplifying photocurrent collected by the photodiode, and the resistors R39-R42 are used for converting current signals into voltage signals, so that the subsequent circuit identification and application are facilitated. In the embodiment of the application, the photodiodes in the same column can amplify and isolate photoelectric signals by using only one PNP (plug and play) transistor, and compared with the prior art, the method has the advantages of fewer components, simple circuit layout, low production cost and good commercial application prospect. Moreover, the PNP triode is utilized to amplify the acquisition signals of the same row of the photodiode array, the PNP triode can be always in a stable working state, the amplification can be carried out when the photoelectric signals are acquired without waiting for a long time, and the signal acquisition efficiency can be effectively improved.
As shown in FIG. 4, another embodiment of the signal acquisition circuit of the present application includes a photodiode array VD1-VD16 of 4*4, diodes D1-D16, NPN transistors Q1-Q4, capacitors C3-C4, and resistors R1-R20. The cathodes of the photodiodes in the same row are connected with the controller, the anodes of the photodiodes in the same column are connected with the second end of a resistor and the anode of the diode, the first ends of the resistors R1-R16 are connected with the controller, the cathodes of the diodes in the same column are connected with the base electrodes of NPN triodes corresponding to the column, the collectors of the NPN triodes Q1-Q4 are connected with a power supply, the emitters of the NPN triodes Q1-Q4 are grounded through a resistor (R17-R20), the emitters of the NPN triodes Q1-Q4 are converted into voltage signals (H1-H4) by the resistors R17-R20 and output to a subsequent circuit for use, the first ends of the capacitors C3 are connected with the first ends of the capacitors C4 and the power supply, and the second ends of the capacitors C3 are connected with the second ends of the capacitors C4 and the ground.
The diodes D1-D16 and the resistors R1-R16 are used as driving elements of the photodiode array and are used for driving photodiodes of corresponding rows to be in a working state according to row driving signals (C01-C04) sent by the controller, when the row driving signals of the controller are input with high-level signals, the diodes are conducted and affected by resistor voltage division, reverse bias signals are applied to the photodiodes, the photodiodes are in a working state of signal acquisition, when the row driving signals of the controller are input with low-level signals, the diodes are cut off, and the photodiodes are normally conducted and cannot normally receive light signals. In the embodiment of the application, the photodiodes in the same column can amplify and isolate photoelectric signals by using only one PNP (plug and play) transistor, and compared with the prior art, the method has the advantages of fewer components, simple circuit layout, low production cost and good commercial application prospect. Moreover, the NPN triode is utilized to amplify the acquisition signals of the same column of the photodiode array, the NPN triode can be always in a stable working state, the NPN triode does not need to wait for a long time to amplify the acquisition signals when acquiring the photoelectric signals, and the signal acquisition efficiency can be effectively improved.
As shown in fig. 5, an embodiment of the present application provides a signal acquisition method, including the following steps:
s1: outputting a row driving signal to the signal acquisition circuit according to any one of the above by using a controller, so that photodiodes of at least one row in the photodiode array are in a signal acquisition state;
collecting photoelectric signals by using the signal collecting circuit
S2: and collecting photoelectric signals by using the signal collecting circuit.
As shown in fig. 6, the embodiment of the present application further provides a signal acquisition device 400, including: comprising a controller 401 and a signal acquisition circuit 402 as claimed in any one of the preceding claims, said controller 401 being connected to a first end of said driving element.
The controller 401 is configured to send a row driving signal to the signal acquisition circuit so that a corresponding row of the photodiode array in the signal acquisition circuit 402 is in a signal acquisition state. The controller may be a central processing unit (Central Processing Unit, CPU), other general purpose controller, digital signal controller (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate array (FieldProgrammable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The general controller may be a microcontroller or the controller may be any conventional controller or the like. In an embodiment of the present application, the controller may be a 74HC164 chip.
As shown in fig. 7, the embodiment of the present application further provides a board 600, which includes a signal output end 500 and the signal acquisition device 400, where the signal output end 500 is connected to the output end of the amplifying element 3.
Compared with the existing signal acquisition circuit, the signal acquisition device and the board card have fewer electronic components, the layout of the circuit board is more convenient, the size of the circuit board is smaller, and the production cost can be effectively reduced; in addition, the photoelectric signals output by the same column of the photodiode array are amplified by the amplifying elements, and the photoelectric signals can be amplified as soon as the photodiodes collect the photoelectric signals, so that the time interval of signal collection is reduced, the collection of the photodiode signals can be realized faster, and the signal collection efficiency is improved.
The present invention is not limited to the above-described embodiments, but, if various modifications or variations of the present invention are not departing from the spirit and scope of the present invention, the present invention is intended to include such modifications and variations as fall within the scope of the claims and the equivalents thereof.
Claims (10)
1. A signal acquisition circuit, comprising: an M x N photodiode array consisting of at least two photodiodes, M driving elements, and N amplifying elements; wherein M is the number of rows of the photodiode array, and N is the number of columns of the photodiode array;
the anodes of the photodiodes of each row of the photodiode array are connected with the second end of one driving element, and the cathodes of the photodiodes of each column of the photodiode array are connected with the input end of one amplifying element; the first end of the driving element is connected with the controller, and the driving element responds to the row driving signal sent by the controller and applies a reverse bias voltage signal to the photodiodes of the corresponding row, so that the photodiodes of at least one row in the photodiode array are in a signal acquisition state;
the amplifying element amplifies the photoelectric signal acquired by the photodiode and outputs the amplified photoelectric signal.
2. The signal acquisition circuit of claim 1, wherein the drive element comprises an NPN transistor; the anodes of the photodiodes of each row of the photodiode array are connected with the collector electrode of an NPN triode, the base electrode of the NPN triode is connected with the controller, and the emitter electrode of the NPN triode is grounded.
3. The signal acquisition circuit of claim 2, wherein the amplifying element comprises a PNP transistor and a first resistor; the cathode of each row of photodiodes of the photodiode array is connected with the base electrode of a PNP triode, the emitter electrode of the PNP triode is connected with a power supply, the collector electrode of the PNP triode is grounded through the first resistor, and the collector electrode of the PNP triode outputs amplified photoelectric signals.
4. The signal acquisition circuit of claim 2 wherein the drive element further comprises a second resistor, wherein a first end of the second resistor is connected to the controller and a second end of the second resistor is connected to the base of the NPN transistor.
5. The signal acquisition circuit of claim 1 wherein the drive element comprises N third resistors and N diodes, wherein the anode of each of the photodiodes is connected to the second terminal of one third resistor and the anode of one diode, respectively, and the cathode of each of the photodiodes is connected to the first terminal of the third resistor and the controller, respectively, and the cathode of the diode is connected to the input terminal of the amplifying element.
6. The signal acquisition circuit of claim 5 wherein the amplifying element comprises an NPN transistor and a fourth resistor; the base electrode of the NPN triode is connected with the cathode of the diode in the same column, the collector electrode of the NPN triode is connected with a power supply, and the emitter electrode of the NPN triode is grounded through the fourth resistor; and the emitter of the NPN triode outputs an amplified photoelectric signal.
7. The signal acquisition circuit of claim 3 further comprising a first capacitor and a second capacitor, the first end of the first capacitor being connected to a power supply, the first end of the second capacitor, and the emitter of the PNP transistor, respectively, the second end of the first capacitor and the second end of the second capacitor being grounded.
8. The signal acquisition method is characterized by comprising the following steps of:
outputting a row driving signal to the signal acquisition circuit according to any one of claims 1 to 7 with a controller so that photodiodes of at least one row in the photodiode array are in a signal acquisition state;
and collecting photoelectric signals by using the signal collecting circuit.
9. A signal acquisition device comprising a controller and a signal acquisition circuit as claimed in claims 1-7, the controller being connected to a first end of the drive element.
10. A board card, comprising a signal output end and the signal acquisition device according to claim 9, wherein the signal output end is connected with the output end of the amplifying element.
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| CN202111492445.2A CN116242480A (en) | 2021-12-08 | 2021-12-08 | Signal acquisition circuit, method and device and board card |
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| CN202111492445.2A CN116242480A (en) | 2021-12-08 | 2021-12-08 | Signal acquisition circuit, method and device and board card |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6608311B1 (en) * | 1998-12-23 | 2003-08-19 | Thomson Tubes Electroniques | Image sensor with integrated amplifiers for data acquisition |
| US20050173616A1 (en) * | 2004-02-09 | 2005-08-11 | Samsung Electronics Co., Ltd. | Solid-state image-sensing device that compensates for brightness at edges of a display area and a driving method thereof |
| WO2012124760A1 (en) * | 2011-03-17 | 2012-09-20 | 独立行政法人産業技術総合研究所 | Gain varying method, variable gain photoelectric conversion element, variable gain photoelectric conversion cell, variable gain photoelectric conversion array, read-out method, and circuit |
| CN109639990A (en) * | 2018-12-19 | 2019-04-16 | 上海箩箕技术有限公司 | The signal acquisition method and signal acquisition circuit of imaging sensor |
| CN110929645A (en) * | 2019-11-22 | 2020-03-27 | 北京集创北方科技股份有限公司 | Signal acquisition device, acquisition method, display device and electronic equipment |
| CN113451337A (en) * | 2021-06-30 | 2021-09-28 | 中国科学技术大学 | Photoelectric detector array and preparation method thereof |
-
2021
- 2021-12-08 CN CN202111492445.2A patent/CN116242480A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6608311B1 (en) * | 1998-12-23 | 2003-08-19 | Thomson Tubes Electroniques | Image sensor with integrated amplifiers for data acquisition |
| US20050173616A1 (en) * | 2004-02-09 | 2005-08-11 | Samsung Electronics Co., Ltd. | Solid-state image-sensing device that compensates for brightness at edges of a display area and a driving method thereof |
| WO2012124760A1 (en) * | 2011-03-17 | 2012-09-20 | 独立行政法人産業技術総合研究所 | Gain varying method, variable gain photoelectric conversion element, variable gain photoelectric conversion cell, variable gain photoelectric conversion array, read-out method, and circuit |
| CN109639990A (en) * | 2018-12-19 | 2019-04-16 | 上海箩箕技术有限公司 | The signal acquisition method and signal acquisition circuit of imaging sensor |
| CN110929645A (en) * | 2019-11-22 | 2020-03-27 | 北京集创北方科技股份有限公司 | Signal acquisition device, acquisition method, display device and electronic equipment |
| CN113451337A (en) * | 2021-06-30 | 2021-09-28 | 中国科学技术大学 | Photoelectric detector array and preparation method thereof |
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