CN207820026U - Image-scanning device, the reception device for controlling image scanning optical signal - Google Patents
Image-scanning device, the reception device for controlling image scanning optical signal Download PDFInfo
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- CN207820026U CN207820026U CN201820175080.8U CN201820175080U CN207820026U CN 207820026 U CN207820026 U CN 207820026U CN 201820175080 U CN201820175080 U CN 201820175080U CN 207820026 U CN207820026 U CN 207820026U
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Abstract
The utility model provides the reception device of a kind of image-scanning device, control image scanning optical signal, the image-scanning device, array sensitive pixel elements, for receiving optical signal；Control circuit is connect with array sensitive pixel elements, for controlling reception of the array sensitive pixel elements to optical signal.By the utility model, can solve the problem of that image is vulnerable to extraneous light disturbance in scan period non-exposed time content in the related technology makes scan image quality decline, and achievees the effect that improve image scanning quality.
Description
Technical field
The utility model is related to the communications fields, believe in particular to a kind of image-scanning device, control image scanning light
Number reception device.
Background technology
Application of the contact-type image sensor in finance device is more and more extensive, as financial environment is increasingly complicated, gold
Melt equipment the quality requirement of scan image is continuously improved, contact-type image sensor is as core imaging section in finance device
Part, performance directly affect the performance of finance device.
Contact-type image sensor is a kind of linear array scanning equipment, and sensitive pixel elements are closely aligned into linear array,
The time for exposure (charge puts aside the time) of each pixel of each read cycle is consistent, after charge puts aside the time, by
Shift register control analog switch is once opened, and the electric signal of pixel is sequentially output in the form of analog signal, to
To the analog picture signal of original copy, the image scanning of a line is completed.Next, adjustment original copy and contact-type image sensor phase
To position, the image scanning of next line is carried out, until whole picture of original copy is scanned and forms image.
In the above-mentioned contact-type image sensor course of work, the time for exposure only accounts for one of each line-scanning period
Point, within this section of time for exposure, the illumination that light source is sent out is mapped on original copy, and the light of original copy reflection is received by sensitive chip, and product
Electric power storage lotus forms imitated output quantity.But in the line-scanning period, the other times except illumination, since extraneous veiling glare is dry
The influence disturbed makes sensitive chip have accumulated some extra interference electricity, to the analog signal for making sensitive chip export outward
It is had differences with true original image information, to affect the quality of scan image.
It is done in conclusion image exists in the prior art and is vulnerable to extraneous veiling glare in scan period non-exposed time content
The problem of disturbing, scan image quality made to decline.
In view of the above technical problems, the relevant technologies not yet propose effective solution scheme.
Utility model content
The utility model embodiment provides the reception device of a kind of image-scanning device, control image scanning optical signal,
It is vulnerable to extraneous light disturbance in scan period non-exposed time content at least to solve image in the related technology, makes scan image
The problem of quality declines.
One embodiment according to the present utility model provides a kind of image-scanning device, including：Array photosensitive pixel list
Member, for receiving optical signal；Control circuit is connect with the array sensitive pixel elements, for controlling the array light-sensitive image
Reception of the plain unit to optical signal.
Optionally, the control circuit is at least executing one of following operation：In the light source luminescent of described device, institute
It states control circuit and sends out the first control wave to control described in the light-sensitive image vegetarian refreshments reception of the array sensitive pixel elements
The optical signal that image reflects under the light source；When the light source of described device does not shine, the control circuit sends out the second control
Pulse signal processed stops receiving optical signal to control the light-sensitive image vegetarian refreshments of the array sensitive pixel elements.
Optionally, the control circuit includes：Control switch, the first control arteries and veins sent out for receiving the light source
Signal is rushed, and the array sensitive pixel elements are controlled according to first control wave and receive described image in the light
The optical signal reflected under source connects alternatively, controlling the array sensitive pixel elements stopping according to second control wave
Receive optical signal.
Optionally, the array sensitive pixel elements are additionally operable to the optical signal being converted to electric signal, and by the electricity
Signal is stored in the form of a charge.
Optionally, the photosensitive device further includes：Reset circuit is connect with the array sensitive pixel elements, for pair
The charge that the array sensitive pixel elements are stored up in each image scanning cycle memory is resetted.
Optionally, the photosensitive device further includes：Switching circuit is connect with the array sensitive pixel elements, and being used for will
The electric signal is stored in the capacitance being connect with the switching circuit；Scanning circuit, and the capacitance connection, for receiving
The electric signal of capacitive transmission is stated, and controls the output of the electric signal；Electric signal processing circuit is connect with the scanning circuit,
Electric signal for receiving the scanning circuit output, and the electric signal of the output is handled.
Optionally, the electric signal processing circuit includes amplifier, for treated, electric signal to be amplified with defeated
Go out the analog voltage signal of described image.
Another embodiment according to the present utility model provides a kind of reception device of control image scanning optical signal,
Including：Sending module, for sending control signal to array sensitive pixel elements, wherein the control signal is for controlling institute
State reception of the array sensitive pixel elements to optical signal.
Optionally, the sending module includes：First receiving unit, in light source luminescent, receiving the light source hair
The first control wave gone out；First transmission unit, for first control wave to be sent to the array sense
Light pixel unit, the light-sensitive image vegetarian refreshments to control the array sensitive pixel elements receive described image and are reflected under the light source
Optical signal.
Optionally, the sending module includes：Second receiving unit, for when the light source of described device does not shine, connecing
Receive the second control wave that the light source is sent out；Second transmission unit, for sending second control wave
To the array sensitive pixel elements, the light-sensitive image vegetarian refreshments to control the array sensitive pixel elements stops receiving optical signal.
Another embodiment according to the present utility model additionally provides a kind of storage medium, is stored in the storage medium
There is computer program, wherein the computer program is arranged to execute the step in any of the above-described embodiment of the method when operation
Suddenly.
Another embodiment according to the present utility model additionally provides a kind of electronic device, including memory and processor,
Computer program is stored in the memory, the processor is arranged to run the computer program to execute above-mentioned
Step in one embodiment of the method.
By the utility model, due to the array sensitive pixel elements in image-scanning device, for receiving optical signal；Control
Circuit processed is connect with array sensitive pixel elements, for controlling reception of the array sensitive pixel elements to optical signal；So that control
Circuit can control array sensitive pixel elements and receive or not receive to optical signal, you can not receive extraneous veiling glare.Cause
This, can solve image in the related technology and be vulnerable to extraneous light disturbance in scan period non-exposed time content, make scanning figure
The problem of image quality amount declines achievees the effect that improve image scanning quality.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings：
Fig. 1 is a kind of the hard of the mobile terminal of the method for reseptance of control image scanning optical signal of the utility model embodiment
Part structure diagram；
Fig. 2 is the flow chart according to the method for reseptance of the control image scanning optical signal of the utility model embodiment；
Fig. 3 is the photoelectric conversion chip schematic diagram according to the utility model embodiment；
Fig. 4 is the control circuit schematic diagram according to the utility model embodiment；
Fig. 5 is the internal control functional block diagram according to the photoelectric conversion chip of the utility model embodiment；
Fig. 6 is the internal logic control timing diagram (one) according to the utility model embodiment；
Fig. 7 is the internal logic control timing diagram (two) according to the utility model embodiment；
Fig. 8 is the contact-type image sensor structural schematic diagram according to the utility model embodiment；
Fig. 9 is illustrated according to the connection type of the contact-type image sensor photoelectric conversion chip of the utility model embodiment
Figure；
Figure 10 is contact-type image sensor sequence diagram in the related technology；
Figure 11 is the contact-type image sensor sequence diagram according to the utility model embodiment；
Figure 12 is the structure diagram according to the reception device of the control image scanning optical signal of the utility model embodiment.
Specific implementation mode
The utility model is described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that not rushing
In the case of prominent, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that term " first " in the specification and claims of the utility model and above-mentioned attached drawing,
" second " etc. is for distinguishing similar object, without being used to describe specific sequence or precedence.
Embodiment 1
The embodiment of the method that the embodiment of the present application one is provided can be in mobile terminal, terminal or similar fortune
It calculates and is executed in device.For running on mobile terminals, Fig. 1 is a kind of control image scanning light of the utility model embodiment
The hardware block diagram of the mobile terminal of the method for reseptance of signal.As shown in Figure 1, mobile terminal 110 may include one or more
(processor 1102 can include but is not limited to Micro-processor MCV or may be programmed patrol a (one is only shown in Fig. 1) processor 1102
The processing unit of volume device FPGA etc.) and memory 1104 for storing data, optionally, above-mentioned mobile terminal can also wrap
Include the transmission device 1106 and input-output equipment 1108 for communication function.It will appreciated by the skilled person that
Structure shown in FIG. 1 is only to illustrate, and does not cause to limit to the structure of above-mentioned mobile terminal.For example, mobile terminal 110 may be used also
Including more either less components than shown in Fig. 1 or with the configuration different from shown in Fig. 1.
Memory 1104 can be used for storing computer program, for example, the software program and module of application software, such as this reality
With the corresponding computer program of method of reseptance of the control image scanning optical signal in new embodiment, processor 1102 passes through fortune
The computer program that row is stored in memory 1104 is realized above-mentioned to perform various functions application and data processing
Method.Memory 1104 may include high speed random access memory, may also include nonvolatile memory, such as one or more magnetic
Property storage device, flash memory or other non-volatile solid state memories.In some instances, memory 1104 can be wrapped further
The memory remotely located relative to processor 1102 is included, these remote memories can pass through network connection to mobile terminal
110.The example of above-mentioned network includes but not limited to internet, intranet, LAN, mobile radio communication and combinations thereof.
Transmitting device 1106 is used to receive via a network or transmission data.Above-mentioned network specific example may include
The wireless network that the communication providers of mobile terminal 110 provide.In an example, transmitting device 1106 includes that a network is suitable
Orchestration (NetworkInterface Controller, referred to as NIC), can be connected with other network equipments by base station from
And it can be communicated with internet.In an example, transmitting device 1106 can be radio frequency (Radio Frequency, abbreviation
For RF) module, it is used to wirelessly be communicated with internet.
A kind of image-scanning device is provided in the present embodiment, specifically includes following content：Array sensitive pixel elements,
For receiving optical signal；Control circuit is connect with above-mentioned array sensitive pixel elements, for controlling above-mentioned array photosensitive pixel list
Reception of the member to optical signal.In the present embodiment, control circuit can control array sensitive pixel elements to optical signal receive or
Person does not receive, you can not receive extraneous veiling glare.Therefore, can solve in the related technology image when the scan period is non-exposed
Between content be vulnerable to extraneous light disturbance, make scan image quality decline the problem of, achieve the effect that improve image scanning quality.
In an alternative embodiment, above-mentioned control circuit is at least executing one of following operation：In above-mentioned apparatus
Light source luminescent when, above-mentioned control circuit sends out the first control wave to control the photosensitive of above-mentioned array sensitive pixel elements
Pixel receives the optical signal that above-mentioned image reflects under above-mentioned light source；When the light source of above-mentioned apparatus does not shine, above-mentioned control
Circuit sends out the second control wave to be stopped receiving optical signal to control the light-sensitive image vegetarian refreshments of above-mentioned array sensitive pixel elements.
In the present embodiment, the control signal of control circuit can control the optical signal that array sensitive pixel elements only receive light source, and
It will not receive the optical signal of extraneous veiling glare, you can to improve the quality of image scanning.
In an alternative embodiment, above-mentioned control circuit includes：Control switch, sends out for receiving above-mentioned light source
First control wave, and above-mentioned array sensitive pixel elements are controlled according to above-mentioned first control wave and are received
The optical signal that image reflects under above-mentioned light source is stated, alternatively, it is photosensitive to control above-mentioned array according to above-mentioned second control wave
Pixel unit stops receiving optical signal.In the present embodiment, control switch is connect with light source, can be in real time according to light source
Pulse signal generates different control signals, and the opening to control array sensitive pixel elements is either closed.
In an alternative embodiment, above-mentioned array sensitive pixel elements are additionally operable to above-mentioned optical signal being converted to telecommunications
Number, and above electrical signal is stored in the form of a charge.
In an alternative embodiment, above-mentioned photosensitive device further includes：Reset circuit, with above-mentioned array photosensitive pixel list
Member connection, the charge for being stored up in each image scanning cycle memory to above-mentioned array sensitive pixel elements reset.
In the present embodiment, reset circuit can realize the reset of sensitive pixel elements, each scan line period, be swept to a upper row
It retouches the charge that period sensitive pixel elements are accumulated to be zeroed out, prevents the generation in the ranks interfered.
In an alternative embodiment, above-mentioned photosensitive device further includes：Switching circuit, with above-mentioned array photosensitive pixel list
Member connection, for being stored in above electrical signal in the capacitance being connect with said switching circuit；Scanning circuit connects with above-mentioned capacitance
It connects, the electric signal for receiving above-mentioned capacitive transmission, and controls the output of above electrical signal；Electric signal processing circuit, and it is above-mentioned
Scanning circuit connects, the electric signal for receiving above-mentioned scanning circuit output, and handles the electric signal of above-mentioned output.On
It includes amplifier to state electric signal processing circuit, for treated, electric signal to be amplified to export the simulation electricity of above-mentioned image
Press signal.In the present embodiment, said switching circuit is mainly used for passing the charge that array sensitive pixel elements store
It is defeated, bit Bit-s output signals are formed, Bit-s signals pass through the processing of electric signal processing circuit, and finally output is by amplification
Variable-ratio power integrated generator (Variable Speed Integrated Generator Confidential, the abbreviation of reason
For VSIG) signal, VSIG signals are the analog voltage letter of the electric signal for the Lighting information conversion that each sensitive pixel elements receive
Number.
Embodiment 2：
A kind of method of reseptance of control image scanning optical signal is provided in the present embodiment, and Fig. 2 is new according to this practicality
The flow chart of the method for reseptance of the control image scanning optical signal of type embodiment, as shown in Fig. 2, the flow includes the following steps：
Step S2202 sends control signal, wherein above-mentioned control signal is for controlling to array sensitive pixel elements
State reception of the array sensitive pixel elements to optical signal.
Through the above steps, control circuit sends control signal to control array photosensitive pixel to array sensitive pixel elements
Reception of the unit to optical signal.Control circuit to control array sensitive pixel elements to receive optical signal or do not connect
It receives, you can not receive extraneous veiling glare.Therefore, can solve in the related technology image in scan period non-exposed time content
The problem of being vulnerable to extraneous light disturbance, scan image quality is made to decline achievees the effect that improve image scanning quality.
Optionally, the executive agent of above-mentioned steps can circuit etc. in order to control, but not limited to this.
In an alternative embodiment, sending above-mentioned control signal to above-mentioned array sensitive pixel elements includes：In light
When source shines, the first control wave that above-mentioned light source is sent out is received；Above-mentioned first control wave is sent to above-mentioned
Array sensitive pixel elements, the light-sensitive image vegetarian refreshments to control above-mentioned array sensitive pixel elements receive above-mentioned image in above-mentioned light source
The optical signal of lower reflection.
In an alternative embodiment, sending above-mentioned control signal to above-mentioned array sensitive pixel elements includes：Upper
When stating the light source of device and not shining, the second control wave that above-mentioned light source is sent out is received；Pulse letter is controlled by above-mentioned second
Number above-mentioned array sensitive pixel elements are sent to, the light-sensitive image vegetarian refreshments to control above-mentioned array sensitive pixel elements stops receiving light
Signal.
In the above-described embodiments, the first control wave among the above is generated according to high level signal, among the above
The second control wave be to be generated according to low level signal.
The utility model is described in detail with reference to specific embodiment：
The present embodiment is mainly to provide a kind of opto-electronic conversion that the line-scanning period interior time for receiving exposure accurately controls
Chip, and the contact-type image sensor that is made of it.It can solve in the line-scanning period, the light disturbance except the time for exposure
The problem of caused poor quality images.
Photoelectric conversion chip in the present embodiment is made of array sensitive pixel elements and control circuit two parts, wherein
Array sensitive pixel elements are converted to electric signal for receiving ambient light according to and by the information of illumination, and control circuit part is used for light
The control of sequential, operating mode, the analog electrical signal storage output of electric conversion chip etc..
The time that array sensitive pixel elements in the present embodiment receive exposure is accurately controlled by control circuit, to effectively
The accuracy for the optical information that control sensitive pixel elements receive, avoids the interference of extraneous veiling glare to greatest extent, improves scanning
Picture quality.
Within each line-scanning period, when the light source igniting of image-reading device, array sensitive pixel elements are being controlled
Photosensitive open state is under the control of signal processed, whole pixels (corresponding to light-sensitive image vegetarian refreshments among the above), which receive, comes from original copy
The optical information of (corresponding to image among the above) reflection；When the light source of image-reading device is closed, array sensitive pixel elements
It is in photosensitive off status under control of the control signal, whole pixels no longer receive any Lighting information.By this photosensitive
Pixel unit receives accurately controlling for the on and off of optical signal function, effectively prevents its in addition to image-reading device light source
The interference for the invalid signals that the illumination of his light source generates improves the signal-to-noise ratio of image-reading device output electric signal, improves scanning
Picture quality.
The present embodiment also provides a kind of contact-type image sensor being made of above-mentioned photoelectric conversion chip and (is equivalent to above-mentioned
In image-scanning device).Including the framework to play a supportive role, optical lens is equipped in framework, the side of lens is equipped with light source,
The lower section of lens is equipped with wiring board, and wiring board is equipped with sensor chip so that sensor chip is in line-scanning period inscribed receipts
The time of exposure accurately controls.
During contact-type image sensor carries out image scanning, when the light source igniting of contact-type image sensor,
The array sensitive pixel elements of sensor core on piece are in photosensitive open state under control of the control signal, and whole pixels receive
Optical information from original copy reflection；When the light source of contact-type image sensor is closed, the array light-sensitive image of sensor core on piece
Plain unit is in photosensitive off status under control of the control signal, and whole pixels no longer receive any Lighting information.Pass through this
Kind sensitive pixel elements receive accurately controlling for the on and off of optical signal function, effectively prevent removing contact-type image sensor light
The interference for the invalid signals that the illumination of other light sources except source generates improves the letter of contact-type image sensor output electric signal
It makes an uproar and compares, improve scan image quality.
As shown in figure 3, a kind of photoelectric conversion chip 1 is provided, by 102 liang of array sensitive pixel elements 101 and control circuit
Part forms, and wherein arrangement sensitive pixel elements 103 linear on array sensitive pixel elements 101 (correspond among the above
Light-sensitive image vegetarian refreshments), the illumination for receiving external light source, sensitive pixel elements are constituted for light sensitive material, can be by a timing
The illumination of interior receiving, which is accumulated and is converted to charge, to be stored, and realizes conversion of the optical signal to electric signal.Control circuit
Part 102 has multiple thereon for the control of the sequential of photoelectric conversion chip, operating mode, analog electrical signal storage output etc.
Signal input output end mouth 104 is used for the input and output of electric signal.As shown in figure 4, be the detailed figure of control circuit 102, by
Amplifier, line register, switch portion and scanning circuit and four part group of control circuit, amplifying circuit and signal input output end mouth
At.
The internal control functional block diagram of the photoelectric conversion chip of the present embodiment is as shown in figure 5, the present embodiment opto-electronic conversion core
Piece is mainly by reset circuit, photoelectric switching circuit, line register and several portions of switching circuit, scanning circuit, electric signal processing circuit
It is grouped as.Wherein, reset circuit can realize the reset of sensitive pixel elements, each scan line period, to a upper row
The charge that scan period sensitive pixel elements are accumulated carries out reset clearing, prevents the generation in the ranks interfered；Photoelectric switching circuit
In sensitive pixel elements receive light irradiation after, convert optical signals into electric signal, stored in a manner of charge, and
It is transmitted；The electrical output signal of photoelectric switching circuit passes through switchControl be stored in capacitance Ct, in scanning circuit
It under the control of output signal sch-n, one by one exports, as shown in fig. 7, forming Bit-s output signals, Bit-s signals are by electricity
The processing of signal processing circuit, finally VSIG signal of the output Jing Guo enhanced processing, VSIG signals are each sensitive pixel elements
The analog voltage signal of the electric signal of the Lighting information conversion of reception.
Sensor chip in the present embodiment increases the control switch of optical receiving circuit(correspond to control among the above
System switch),It is associated with the lighting pulse signal of external led, it is the pulse signal synchronous with led control waves,
Play the role of controlling the switch that sensitive pixel elements receive ambient light photograph, the scanning week as shown in fig. 6, photoelectric conversion chip is expert at
Phase starts to be initially located in working condition under the startup of the direct impulse of pulse SI signals, whenIn the case of for high potential, upper one
The charge that a line-scanning period is stored in capacitance Ct starts to export to electric signal processing circuit, after electric signal output is completed,
Reset signalSignal output is high potential, and sensitive pixel elements are reset at this time, reset after completing, each photosensitive
The charge accumulated on pixel unit is zero.When external light source lighting pulse LED signal is in high potential, while sensitive pixel elements
Receive photoswitch signalIn high potential, the state that sensitive pixel elements are opened in reception illumination at this time, external light source exists
Start to shine under the control of LED pulses, and be radiated on original copy, the reflected light of original copy is received and is converted by sensitive pixel elements
Charge stores, when external light source lighting pulse LED signal is in low potential, while sensitive pixel elements reception photoswitch signalIn low potential, in the state for receiving illumination pass, sensitive pixel elements no longer receive at this time appoints sensitive pixel elements at this time
What Lighting information, the quantity of electric charge of storage no longer change.Turn to electric signal when sensitive pixel elements complete above-mentioned optical signal
After change, the charge of sensitive pixel elements storage will be in the control of scanning circuit and electric signal processing circuit as shown in Figure 5
Under, transmission as shown in Figure 7 is carried out, and complete the output of final scanning electric signal.It is opened since sensitive pixel elements receive light
It closesPresence, sensitive pixel elements receive optical information all from light source irradiation original copy reflected light, theoretically not
It can be interfered by other extraneous veiling glares, therefore the output signal of the sensor chip in the present embodiment can be restored more really
The information of original copy improves scan image quality.
The time that sensitive pixel elements in the present embodiment receive exposure is accurately controlled by control circuit, to effectively control
The accuracy for the optical information that sensitive pixel elements receive avoids the interference of extraneous veiling glare to greatest extent, improves scan image
Quality.
As shown in figure 8, the present embodiment provides a kind of contact-type image sensor 2 being made of above-mentioned photoelectric conversion chip,
Including：Photoelectric conversion chip 201, it is characterised in that sensor chip can be controlled accurately in the line-scanning period inscribed time for receiving exposure
System；Light source 202 is mapped to original copy for providing illumination；Framework 203, is used to support total；Glass cover-plate 204, for protecting
Shield internal structure is not contaminated by dust；Lens 205, for converging to light in photoelectric conversion chip；Wiring board 206 carries light
On electric conversion chip and other circuits.
Contact-type image sensor is a kind of linear array scanning equipment, and sensitive pixel elements are closely aligned into linear array,
The time for exposure (charge puts aside the time) of each pixel of each read cycle is consistent, after charge puts aside the time, by
Shift register control analog switch is once opened, and the electric signal of pixel is sequentially output in the form of analog signal, to
To the analog picture signal of original copy, the image scanning of a line is completed.Next, adjustment original copy and contact-type image sensor phase
To position, the image scanning of next line is carried out, until whole picture of original copy is scanned and forms image.
Photoelectric conversion chip 201 in the present embodiment is connected using mode shown in Fig. 9.In contact-type image sensor 2
During carrying out image scanning, when the light source 202 of contact-type image sensor is lighted, the array of sensor core on piece is photosensitive
Pixel unit is in photosensitive open state under the control of control signal CNT, and whole sensitive pixel elements are received to be reflected from original copy
And pass through the optical information of lens 205；When the light source of contact-type image sensor is closed, the array of sensor core on piece is photosensitive
Pixel unit is in photosensitive off status at the control CNT of control signal, and whole sensitive pixel elements no longer receive any illumination
Information.The control of effective illumination is accurately received by this sensitive pixel elements, it is ensured that the electric signal of photoelectric conversion chip is defeated
Go out, is the output that can really reflect original copy information, to ensure that the quality of image.
The contact-type image sensor working timing figure of the prior art is as shown in Figure 10, and clock CLocK (CLK) is system work
The clock signal of work, SI are scan line cycle control signal, and LED is light source control signal, and SIG is electrical output signal.Each
In a row period, when equipment light source igniting, i.e., when LED signal is high level, the sensitive pixel elements 103 of photoelectric conversion chip
The light of reception is that light source irradiates original copy and the light of reflection, and optical signal at this time is the effective optical signal for reacting original copy content, through light
Effectively illumination shown in the dotted portion formed in SIG electrical output signals after electricity conversion exports electric signal.When LED signal is low electricity
Usually, theoretically, original copy will not receive the irradiation of any light source and will not be reflected on sensitive pixel elements 103, at this point, will not
Have new light energy accumulation, to be converted into SIG electrical output signals, still, in practical application, due to equipment sealing and be protected from light not
It is perfect, make photoelectric conversion chip in the case where no light source irradiates, can still receive external interference veiling glare, this is resulted in
, actual SIG output electric signal both contained the electric signal that effective illumination generates and also contained the generation of external interference veiling glare
Electric signal, i.e. SIG bold portions in Figure 10.As it can be seen that the influence of external interference veiling glare is so that under the signal-to-noise ratio of SIG output signals
Drop, will necessarily influence the quality of scan image.
Contact-type image sensor working timing figure in the present embodiment is as shown in figure 11, and CLK is the clock of system work
Signal, SI are scan line cycle control signal, and LED is light source control signal, and CNT signals are that sensitive pixel elements control signal,
SIG is electrical output signal.Within each row period, when equipment light source igniting, i.e., when LED signal is high level, control letter
Number CNT also becomes high level therewith, and the sensitive pixel elements 103 of photoelectric conversion chip are opened under the control of control signal CNT,
The light of original copy reflection is received, optical signal at this time is the effective optical signal for reacting original copy content, and SIG electricity is formed after opto-electronic conversion
Effective illumination shown in dotted portion in output signal exports electric signal.When LED signal is low level, signal CNT is controlled
Also becoming low level therewith, the sensitive pixel elements 103 of photoelectric conversion chip are closed under the control of control signal CNT at this time,
Any optical signal is no longer received, at this point, new light energy accumulation is not had, to be converted into SIG electrical output signals.Therefore, photoelectricity
The SIG electrical output signals of conversion chip are SIG bold portions in Figure 11.Ideally, above-mentioned SIG dotted portions and achievement unit
It point should be completely superposed, but due to the presence of CNT signals and the time delay of LED signal, in light source exposure process
The factors such as light disturbance can cause have subtle difference between the two.But this species diversity is very small, and be that can pass through other
Means, such as take better hardware circuit improves to reduce the methods of non-reflective processing inside delay and equipment.
This sensitive pixel elements receive accurately controlling for the on and off of optical signal function, effectively prevent removing contact figure
As the interference for the invalid signals that the illumination of the other light sources except sensor light source generates, contact-type image sensor output is improved
The signal-to-noise ratio of electric signal improves scan image quality.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation
The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but it is very much
In the case of the former be more preferably embodiment.Based on this understanding, the technical solution of the utility model is substantially right in other words
The part that the prior art contributes can be expressed in the form of software products, which is stored in one
In storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions use so that a station terminal equipment (can be mobile phone,
Computer, server or network equipment etc.) execute each embodiment of the utility model described in method.
Embodiment 3
A kind of reception device of control image scanning optical signal is additionally provided in the present embodiment, and the device is for realizing upper
Embodiment and preferred embodiment are stated, repeating no more for explanation had been carried out.As used below, term " module " can be with
Realize the combination of the software and/or hardware of predetermined function.Although device described in following embodiment is preferably come with software real
It is existing, but the realization of the combination of hardware or software and hardware is also that may and be contemplated.
Figure 12 is according to the structure diagram of the reception device of the control image scanning optical signal of the utility model embodiment, such as
Shown in Figure 12, which includes sending module 1202, and the device is described in detail below：
Sending module 1202, for sending control signal to array sensitive pixel elements, wherein the control signal is used for
Control reception of the array sensitive pixel elements to optical signal.
In an alternative embodiment, the sending module 1202 includes：First receiving unit, in light source luminescent
When, receive the first control wave that the light source is sent out；First transmission unit is used for first control wave
The array sensitive pixel elements are sent to, the light-sensitive image vegetarian refreshments to control the array sensitive pixel elements receives described image
The optical signal reflected under the light source.
In an alternative embodiment, the sending module 1202 includes：Second receiving unit, in described device
Light source not shine when, receive the second control wave that the light source is sent out；Second transmission unit is used for described second
Control wave is sent to the array sensitive pixel elements, to control the light-sensitive image vegetarian refreshments of the array sensitive pixel elements
Stop receiving optical signal.
It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong
Following manner realization is crossed, but not limited to this：Above-mentioned module is respectively positioned in same processor；Alternatively, above-mentioned modules are with arbitrary
The form of combination is located in different processors.
The embodiments of the present invention additionally provide a kind of storage medium, and computer program is stored in the storage medium,
Wherein, which is arranged to execute the step in any of the above-described embodiment of the method when operation.
Optionally, in the present embodiment, above-mentioned storage medium can be set to store for executing above each step
Computer program.
Optionally, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only memory (Read-
Only Memory, referred to as ROM), it is random access memory (Random Access Memory, referred to as RAM), mobile hard
The various media that can store computer program such as disk, magnetic disc or CD.
The embodiments of the present invention additionally provide a kind of electronic device, including memory and processor, in the memory
It is stored with computer program, which is arranged to run computer program to execute in any of the above-described embodiment of the method
Step.
Optionally, above-mentioned electronic device can also include transmission device and input-output equipment, wherein the transmission device
It is connected with above-mentioned processor, which connects with above-mentioned processor.
Optionally, the specific example in the present embodiment can refer to described in above-described embodiment and optional embodiment
Example, details are not described herein for the present embodiment.
Obviously, those skilled in the art should be understood that each module of above-mentioned the utility model or each step can be used
General computing device realizes that they can be concentrated on a single computing device, or be distributed in multiple computing device institutes
On the network of composition, optionally, they can be realized with the program code that computing device can perform, it is thus possible to by them
Storage is performed by computing device in the storage device, and in some cases, can be to be executed different from sequence herein
Shown or described step, either they are fabricated to each integrated circuit modules or by multiple moulds in them
Block or step are fabricated to single integrated circuit module to realize.In this way, the utility model be not limited to any specific hardware and
Software combines.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all within the principle of the utility model, institute
Any modification, equivalent substitution, improvement and etc. of work, should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of image-scanning device, which is characterized in that including：
Array sensitive pixel elements, for receiving optical signal；
Control circuit is connect with the array sensitive pixel elements, for controlling the array sensitive pixel elements to optical signal
Reception.
2. the apparatus according to claim 1, which is characterized in that the control circuit below at least executing for operating it
One：
In the light source luminescent of described device, it is photosensitive to control the array that the control circuit sends out the first control wave
The light-sensitive image vegetarian refreshments of pixel unit receives the optical signal that described image reflects under the light source；
When the light source of described device does not shine, the control circuit sends out the second control wave to control the array sense
The light-sensitive image vegetarian refreshments of light pixel unit stops receiving optical signal.
3. the apparatus of claim 2, which is characterized in that the control circuit includes：
Control switch, first control wave sent out for receiving the light source, and control arteries and veins according to described first
It rushes signal and controls the optical signal that the array sensitive pixel elements reception described image reflects under the light source, alternatively, according to
Second control wave, which controls the array sensitive pixel elements, to be stopped receiving optical signal.
4. the apparatus according to claim 1, which is characterized in that the array sensitive pixel elements are additionally operable to believe the light
Number electric signal is converted to, and the electric signal is stored in the form of a charge.
5. device according to claim 4, which is characterized in that described image scanning means further includes：
Reset circuit is connect with the array sensitive pixel elements, is used for the array sensitive pixel elements in each figure
As the charge stored in the scan period is resetted.
6. device according to claim 4, which is characterized in that described image scanning means further includes：
Switching circuit is connect with the array sensitive pixel elements, for the electric signal to be stored in and the switching circuit
In the capacitance of connection；
Scanning circuit, with the capacitance connection, the electric signal for receiving the capacitive transmission, and control the defeated of the electric signal
Go out；
Electric signal processing circuit is connect with the scanning circuit, the electric signal for receiving the scanning circuit output, and to institute
The electric signal for stating output is handled.
7. device according to claim 6, which is characterized in that the electric signal processing circuit includes amplifier, for pair
Treated, and electric signal is amplified to export the analog voltage signal of described image.
8. a kind of reception device of control image scanning optical signal, which is characterized in that including：
Sending module, for sending control signal to array sensitive pixel elements, wherein the control signal is described for controlling
Reception of the array sensitive pixel elements to optical signal.
9. device according to claim 8, which is characterized in that the sending module includes：
First receiving unit, in light source luminescent, receiving the first control wave that the light source is sent out；
First transmission unit, for first control wave to be sent to the array sensitive pixel elements, with control
The light-sensitive image vegetarian refreshments of the array sensitive pixel elements receives the optical signal that described image reflects under the light source.
10. device according to claim 8, which is characterized in that the sending module includes：
Second receiving unit, the second control pulse sent out for when the light source of described device does not shine, receiving the light source
Signal；
Second transmission unit, for second control wave to be sent to the array sensitive pixel elements, with control
The light-sensitive image vegetarian refreshments of the array sensitive pixel elements stops receiving optical signal.
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| CN201820175080.8U CN207820026U (en) | 2018-01-31 | 2018-01-31 | Image-scanning device, the reception device for controlling image scanning optical signal |
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|---|---|---|---|
| CN201820175080.8U CN207820026U (en) | 2018-01-31 | 2018-01-31 | Image-scanning device, the reception device for controlling image scanning optical signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019148835A1 (en) * | 2018-01-31 | 2019-08-08 | 威海华菱光电股份有限公司 | Image scanning apparatus, and method and apparatus for controlling receiving of image scanning optical signal |
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2018
- 2018-01-31 CN CN201820175080.8U patent/CN207820026U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019148835A1 (en) * | 2018-01-31 | 2019-08-08 | 威海华菱光电股份有限公司 | Image scanning apparatus, and method and apparatus for controlling receiving of image scanning optical signal |
| US11190665B2 (en) | 2018-01-31 | 2021-11-30 | Weihai Hualing Opto-Electronics Co., Ltd | Image scanning apparatus, and method and apparatus for controlling receiving of image scanning optical signal |
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