WO2019148835A1 - 图像扫描装置、控制图像扫描光信号的接收方法及装置 - Google Patents

图像扫描装置、控制图像扫描光信号的接收方法及装置 Download PDF

Info

Publication number
WO2019148835A1
WO2019148835A1 PCT/CN2018/103924 CN2018103924W WO2019148835A1 WO 2019148835 A1 WO2019148835 A1 WO 2019148835A1 CN 2018103924 W CN2018103924 W CN 2018103924W WO 2019148835 A1 WO2019148835 A1 WO 2019148835A1
Authority
WO
WIPO (PCT)
Prior art keywords
photosensitive pixel
control
signal
array
light source
Prior art date
Application number
PCT/CN2018/103924
Other languages
English (en)
French (fr)
Inventor
戚务昌
邓娟
马军伟
王凯
Original Assignee
威海华菱光电股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 威海华菱光电股份有限公司 filed Critical 威海华菱光电股份有限公司
Priority to US16/621,253 priority Critical patent/US11190665B2/en
Priority to KR1020207024949A priority patent/KR102430012B1/ko
Priority to JP2020542109A priority patent/JP7179071B2/ja
Priority to EP18904431.6A priority patent/EP3637753A4/en
Publication of WO2019148835A1 publication Critical patent/WO2019148835A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00912—Arrangements for controlling a still picture apparatus or components thereof not otherwise provided for
    • H04N1/00933—Timing control or synchronising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/191—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
    • H04N1/031—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
    • H04N1/031—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors
    • H04N1/0311—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors using an array of elements to project the scanned image elements onto the photodetectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
    • H04N1/031—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors
    • H04N1/0313—Direct contact pick-up heads, i.e. heads having no array of elements to project the scanned image elements onto the photodectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/191—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/192—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
    • H04N1/193—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/70—SSIS architectures; Circuits associated therewith
    • H04N25/701—Line sensors
    • H04N25/7013—Line sensors using abutted sensors forming a long line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/0077—Types of the still picture apparatus
    • H04N2201/0081—Image reader

Definitions

  • the present invention relates to the field of communications, and in particular to an image scanning device, a method and a device for controlling an image scanning optical signal.
  • contact image sensors are the core imaging components in financial equipment, and their performance directly affects the performance. The performance of financial equipment.
  • the contact image sensor is a line scan device in which the photosensitive pixel units are closely arranged in a line array, and the exposure time (charge accumulation time) of each pixel is uniform in each reading cycle, and after the charge accumulation time is over,
  • the analog switch is controlled by the shift register to be turned on once, and the electrical signals of the pixels are sequentially outputted in the form of analog signals, thereby obtaining an analog image signal of the original, and completing one line of image scanning.
  • the relative position of the original and the contact image sensor is adjusted, and the image of the next line is scanned until the entire original image is scanned and an image is formed.
  • the exposure time only occupies a part of each line scanning period.
  • the light emitted by the light source is irradiated onto the original, and the light reflected by the original is received by the photosensitive chip, and the charge is accumulated. , forming an analog output.
  • the photosensitive chip accumulates some additional interference power, so that the analog signal outputted by the photosensitive chip and the real original image are generated. There is a difference in information, which affects the quality of the scanned image.
  • Embodiments of the present invention provide an image scanning apparatus, a method and a device for controlling an image scanning optical signal, so as to at least solve the problem that the image is susceptible to external stray light interference during the non-exposure time of the scanning period, and the quality of the scanned image is degraded. problem.
  • an image scanning apparatus comprising: an array photosensitive pixel unit configured to receive an optical signal; and a control circuit coupled to the array photosensitive pixel unit and configured to control the array photosensitive pixel unit Reception of optical signals.
  • control circuit is configured to perform at least one of: when the light source of the device emits light, the control circuit sends a first control pulse signal to control the photosensitive pixel point receiving of the array photosensitive pixel unit The image is reflected by the light source under the light source; when the light source of the device is not illuminated, the control circuit issues a second control pulse signal to control the photosensitive pixel of the array of photosensitive pixel units to stop receiving the optical signal.
  • control circuit includes: a control switch configured to receive the first control pulse signal emitted by the light source, and control the array photosensitive pixel unit to receive the image according to the first control pulse signal The optical signal reflected under the light source, or controlling the array photosensitive pixel unit to stop receiving the optical signal according to the second control pulse signal.
  • the array photosensitive pixel unit is further configured to convert the optical signal into an electrical signal and store the electrical signal in the form of a charge.
  • the image scanning device further includes: a reset circuit connected to the array photosensitive pixel unit, configured to reset the charge stored by the array photosensitive pixel unit in each image scanning period.
  • the image scanning device further includes: a switch circuit connected to the array photosensitive pixel unit, configured to store the electrical signal in a capacitor connected to the switch circuit; a scan circuit, and the capacitor Connecting, configured to receive an electrical signal transmitted by the capacitor, and controlling an output of the electrical signal; an electrical signal processing circuit coupled to the scanning circuit, configured to receive an electrical signal output by the scanning circuit, and to The output electrical signal is processed.
  • a switch circuit connected to the array photosensitive pixel unit, configured to store the electrical signal in a capacitor connected to the switch circuit
  • a scan circuit and the capacitor Connecting, configured to receive an electrical signal transmitted by the capacitor, and controlling an output of the electrical signal
  • an electrical signal processing circuit coupled to the scanning circuit, configured to receive an electrical signal output by the scanning circuit, and to The output electrical signal is processed.
  • the electrical signal processing circuit includes an amplifier arranged to amplify the processed electrical signal to output an analog voltage signal of the image.
  • a receiving method for controlling an image scanning optical signal includes: transmitting a control signal to an array photosensitive pixel unit, wherein the control signal is used to control the array photosensitive pixel unit to light Signal reception.
  • the transmitting the control signal to the array photosensitive pixel unit comprises: receiving a first control pulse signal sent by the light source when the light source emits light; and transmitting the first control pulse signal to the array photosensitive pixel And receiving, by the unit, the photosensitive pixel of the array of photosensitive pixel units, the optical signal reflected by the image under the light source.
  • the sending the control signal to the array photosensitive pixel unit comprises: receiving a second control pulse signal sent by the light source when the light source of the device is not emitting light; and sending the second control pulse signal to The array of photosensitive pixel units controls the photosensitive pixels of the array of photosensitive pixel units to stop receiving optical signals.
  • a receiving apparatus for controlling an image scanning optical signal comprising: a transmitting module configured to transmit a control signal to an array photosensitive pixel unit, wherein the control signal is used to control the array The receiving of the optical signal by the photosensitive pixel unit.
  • the sending module includes: a first receiving unit configured to receive a first control pulse signal sent by the light source when the light source emits light; and a first sending unit configured to send the first control pulse signal Giving the array of photosensitive pixel units to control the photosensitive pixels of the array of photosensitive pixel units to receive optical signals of the image that are reflected under the light source.
  • the sending module includes: a second receiving unit configured to receive a second control pulse signal sent by the light source when the light source of the device does not emit light; and a second sending unit configured to: The second control pulse signal is sent to the array photosensitive pixel unit to control the photosensitive pixel point of the array photosensitive pixel unit to stop receiving the optical signal.
  • a storage medium having stored therein a computer program, wherein the computer program is configured to execute the steps of any one of the method embodiments described above.
  • an electronic device comprising a memory and a processor, wherein the memory stores a computer program, the processor being arranged to run the computer program to perform any of the above The steps in the method embodiments.
  • the array photosensitive pixel unit in the image scanning device is arranged to receive the optical signal;
  • the control circuit is connected to the array photosensitive pixel unit, and is arranged to control the receiving of the optical signal by the array photosensitive pixel unit; so that the control circuit can control the array
  • the photosensitive pixel unit receives or does not receive the optical signal, that is, it may not receive external stray light. Therefore, the problem that the image is easily interfered by external stray light during the non-exposure time of the scanning period and the quality of the scanned image is degraded can be solved, and the effect of improving the image scanning quality can be achieved.
  • FIG. 1 is a block diagram showing the hardware structure of a mobile terminal for controlling a method for receiving an image scanning optical signal according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method of controlling reception of an image scanning optical signal according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a photoelectric conversion chip according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a control circuit in accordance with an embodiment of the present invention.
  • FIG. 5 is a block diagram showing the internal control principle of a photoelectric conversion chip according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram (1) of internal logic control timing according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of internal logic control timing (2) according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a contact image sensor according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram showing a connection manner of a photoelectric conversion chip of a contact image sensor according to an embodiment of the present invention.
  • FIG. 11 is a timing diagram of a contact image sensor in accordance with an embodiment of the present invention.
  • FIG. 12 is a block diagram showing the structure of a receiving apparatus for controlling an image scanning optical signal according to an embodiment of the present invention.
  • FIG. 1 is a hardware structural block diagram of a mobile terminal for controlling a method for receiving an image scanning optical signal according to an embodiment of the present invention.
  • mobile terminal 110 may include one or more (only one of which is shown in FIG. 1) processor 1102 (processor 1102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA. And a memory 1104 configured to store data.
  • the mobile terminal may further include a transmission device 1106 and a input and output device 1108 that are configured as communication functions.
  • the structure shown in FIG. 1 is merely illustrative, and does not limit the structure of the above mobile terminal.
  • the mobile terminal 110 may also include more or fewer components than those shown in FIG. 1, or have a different configuration than that shown in FIG.
  • the memory 1104 can be configured to store a computer program, such as a software program of the application software and a module, such as a computer program corresponding to the method for controlling the image scanning optical signal in the embodiment of the present invention, and the processor 1102 is stored in the memory 1104 by running.
  • the computer program thereby performing various functional applications and data processing, implements the above method.
  • Memory 1104 can include high speed random access memory, and can also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
  • memory 1104 can further include memory remotely located relative to processor 1102, which can be connected to mobile terminal 110 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Transmission device 1106 is arranged to receive or transmit data via a network.
  • the above-described network specific example may include a wireless network provided by a communication provider of the mobile terminal 110.
  • the transmission device 1106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
  • the transmission device 1106 can be a radio frequency (Radio Frequency, RF for short) module configured to communicate with the Internet wirelessly.
  • NIC Network Interface Controller
  • an image scanning apparatus which specifically includes the following: an array photosensitive pixel unit configured to receive an optical signal; and a control circuit coupled to the array photosensitive pixel unit to be configured to control the array photosensitive pixel unit to light Signal reception.
  • the control circuit may control the array photosensitive pixel unit to receive or not receive the optical signal, that is, may not receive external stray light. Therefore, the problem that the image is easily interfered by external stray light during the non-exposure time of the scanning period and the quality of the scanned image is degraded can be solved, and the effect of improving the image scanning quality can be achieved.
  • control circuit is configured to perform at least one of the following operations: when the light source of the device emits light, the control circuit sends a first control pulse signal to control the photosensitive pixel receiving of the array photosensitive pixel unit The image is reflected by the light source; when the light source of the device is not illuminated, the control circuit sends a second control pulse signal to control the photosensitive pixel of the array of photosensitive pixels to stop receiving the optical signal.
  • the control signal of the control circuit can control the array photosensitive pixel unit to receive only the optical signal of the light source, and does not receive the external stray light signal, that is, the quality of the image scanning can be improved.
  • control circuit includes: a control switch configured to receive the first control pulse signal sent by the light source, and control the array photosensitive pixel unit to receive the image at the light source according to the first control pulse signal The reflected light signal is down, or the array photosensitive pixel unit is controlled to stop receiving the optical signal according to the second control pulse signal.
  • control switch is connected to the light source, and different control pulse signals can be generated according to the pulse signal of the light source in real time to control the opening or closing of the array photosensitive pixel unit.
  • the array photosensitive pixel unit is further configured to convert the optical signal into an electrical signal and store the electrical signal in the form of a charge.
  • the image scanning device further includes: a reset circuit connected to the array photosensitive pixel unit, configured to reset the charge stored in the image sensing pixel unit in each image scanning period.
  • the reset circuit can realize resetting of the photosensitive pixel unit, and each of the scanning line periods starts to clear the charge accumulated in the photosensitive pixel unit in the previous line scanning period to prevent occurrence of inter-row interference.
  • the image scanning device further includes: a switch circuit connected to the array photosensitive pixel unit, configured to store the electrical signal in a capacitor connected to the switch circuit; a scan circuit, and the capacitor Connecting, configured to receive an electrical signal transmitted by the capacitor, and controlling an output of the electrical signal; the electrical signal processing circuit is coupled to the scanning circuit, configured to receive an electrical signal output by the scanning circuit, and perform an electrical signal outputting the electrical signal deal with.
  • the electrical signal processing circuit includes an amplifier configured to amplify the processed electrical signal to output an analog voltage signal of the image.
  • the switch circuit is mainly configured to transmit the charge stored in the array photosensitive pixel unit to form a bit Bit-s output signal, the Bit-s signal is processed by the electrical signal processing circuit, and finally the output is amplified.
  • Variable Speed Integrated Generator (VSIG) signal the analog voltage signal of the electrical signal converted by the illumination information received by each photosensitive pixel unit.
  • FIG. 2 is a flowchart of a method for controlling an image scanning optical signal according to an embodiment of the present invention. As shown in FIG. 2, the flow includes the following steps. :
  • Step S2202 sending a control signal to the array photosensitive pixel unit, wherein the control signal is used to control the receiving of the optical signal by the array photosensitive pixel unit.
  • the control circuit sends a control signal to the array photosensitive pixel unit to control the reception of the optical signal by the array photosensitive pixel unit.
  • the control circuit can control the array photosensitive pixel unit to receive or not receive the optical signal, that is, it can not receive the external stray light. Therefore, the problem that the image is easily disturbed by external stray light during the non-exposure time of the scanning period and the quality of the scanned image is reduced can be solved, and the effect of improving the image scanning quality can be achieved.
  • the execution body of the above steps may be a control circuit or the like, but is not limited thereto.
  • the transmitting the control signal to the array photosensitive pixel unit comprises: receiving a first control pulse signal sent by the light source when the light source emits light; and transmitting the first control pulse signal to the array photosensitive pixel The unit receives the light signal reflected by the image under the light source by controlling the photosensitive pixel point of the array photosensitive pixel unit.
  • the transmitting the control signal to the array photosensitive pixel unit comprises: receiving a second control pulse signal sent by the light source when the light source of the device is not emitting light; and transmitting the second control pulse signal to The array photosensitive pixel unit controls the photosensitive pixels of the array photosensitive pixel unit to stop receiving the optical signal.
  • the first control pulse signal in the above is generated based on the high level signal
  • the second control pulse signal in the above is generated based on the low level signal
  • the present embodiment mainly provides a photoelectric conversion chip capable of accurately controlling the time of receiving exposure in a line scanning period, and a contact image sensor composed of the same. It can solve the problem that the image quality deteriorates due to stray light interference outside the exposure time in the line scanning period.
  • the photoelectric conversion chip in this embodiment is composed of an array photosensitive pixel unit and a control circuit, wherein the array photosensitive pixel unit is configured to receive external illumination and convert the illumination information into an electrical signal, and the control circuit portion is configured as a photoelectric conversion chip. Control of timing, operating mode, analog electrical signal storage output, etc.
  • the time for receiving the exposure of the array photosensitive pixel unit in this embodiment is precisely controlled by the control circuit, thereby effectively controlling the accuracy of the optical information received by the photosensitive pixel unit, maximally avoiding interference of external stray light, and improving the quality of the scanned image.
  • each line scanning period when the light source of the image reading device is lit, the array photosensitive pixel unit is in a photosensitive open state under the control of the control signal, and all the pixel points (corresponding to the photosensitive pixel points in the above) are received from the original. (corresponding to the image in the above) reflected light information; when the light source of the image reading device is turned off, the array photosensitive pixel unit is in the photosensitive off state under the control of the control signal, and all the pixel points no longer receive any illumination information.
  • the interference of the invalid signal generated by the illumination of the light source other than the light source of the image reading device is effectively avoided, and the output of the electric signal of the image reading device is improved.
  • Signal to noise ratio to improve the quality of scanned images.
  • the present embodiment also provides a contact type image sensor (corresponding to the above-described image scanning device) constituted by the above photoelectric conversion chip.
  • the utility model comprises a supporting body, an optical lens is arranged in the frame body, a light source is arranged on the side of the lens, a circuit board is arranged under the lens, and a sensor chip is arranged on the circuit board, so that the sensor chip receives the exposure time in the line scanning period. Can be precisely controlled.
  • the array photosensitive pixel unit on the sensor chip In the process of image scanning by the contact image sensor, when the light source of the contact image sensor is lit, the array photosensitive pixel unit on the sensor chip is in a photosensitive open state under the control of the control signal, and all the pixels receive the light reflected from the original. Information; when the light source of the contact image sensor is turned off, the array photosensitive pixel unit on the sensor chip is in a photosensitive off state under the control of the control signal, and all the pixel points no longer receive any illumination information.
  • the precise control of the on and off functions of the optical signal receiving function of the photosensitive pixel unit effectively avoids the interference of the invalid signal generated by the illumination of the light source other than the contact image sensor source, and improves the output of the electrical signal of the contact image sensor. Signal to noise ratio to improve the quality of scanned images.
  • a photoelectric conversion chip 1 is provided, which is composed of an array photosensitive pixel unit 101 and a control circuit 102, wherein the array photosensitive unit 101 has a linear arrangement of photosensitive pixel units 103 (corresponding to the above).
  • the photosensitive pixel is set to receive the illumination of the external light source, and the photosensitive pixel unit is composed of a light-sensitive material, and the light received in a certain period of time can be accumulated and converted into a charge to be stored, thereby realizing the conversion of the optical signal to the electrical signal.
  • the control circuit portion 102 is provided as a control of the timing, the operation mode, the analog electric signal storage output, and the like of the photoelectric conversion chip, and has a plurality of signal input/output ports 104 thereon, which are set as input and output of electrical signals. As shown in FIG. 4, it is a detailed diagram of the control circuit 102, which is composed of an amplifier, a line register, a switch unit, a scanning circuit and a control circuit, an amplifying circuit, and a signal input/output port.
  • the internal control principle block diagram of the photoelectric conversion chip of this embodiment is shown in FIG. 5.
  • the photoelectric conversion chip of this embodiment is mainly composed of a reset circuit, a photoelectric conversion circuit, a line register and a switching circuit, a scanning circuit, and an electrical signal processing circuit.
  • the reset circuit can realize resetting of the photosensitive pixel unit, and each of the scanning line periods starts to reset and clear the charge accumulated in the photosensitive pixel unit in the previous line scanning period to prevent the occurrence of inter-row interference; the light sensing in the photoelectric conversion circuit After receiving the light, the pixel unit converts the optical signal into an electrical signal, stores it in a charge manner, and transmits the same; the electrical output signal of the photoelectric conversion circuit passes through the switch The control is stored in the capacitor Ct, and is outputted one by one under the control of the output signal sch-n of the scanning circuit. As shown in FIG. 7, the Bit-s output signal is formed, and the Bit-s signal is processed by the electric signal processing circuit. Finally, the amplified VSIG signal is output, and the VSIG signal is an analog voltage signal of the electrical signal converted by the illumination information received by each photosensitive pixel unit.
  • the sensor chip in this embodiment adds a control switch of the light receiving circuit (corresponding to the control switch in the above), Associated with the external LED lighting pulse signal, it is a pulse signal synchronized with the LED control pulse signal, and functions to control the photosensitive pixel unit to receive external illumination.
  • the photoelectric conversion chip starts pulse at the line scanning period.
  • the positive pulse of the SI signal starts to work, when In the case of high potential, the charge stored in the capacitor Ct in the previous row scanning period starts to be output to the electric signal processing circuit, and after the output of the electric signal is completed, the reset signal is The signal output is high, and the photosensitive pixel unit is reset. After the reset is completed, the accumulated charge on each photosensitive pixel unit is zero.
  • the photosensitive pixel unit When the external light source lighting pulse LED signal is at a high potential, the photosensitive pixel unit receives the optical switch signal At a high potential, at this time, the photosensitive pixel unit is in a state of receiving light, and the external light source starts to emit light under the control of the LED pulse, and is irradiated on the original, and the reflected light of the original is received by the photosensitive pixel unit and converted into charge storage, when the outside is The light source lighting pulse LED signal is at a low potential, and the photosensitive pixel unit receives the optical switch signal At a low potential, the photosensitive pixel unit is in a state of receiving illumination off, at which time the photosensitive pixel unit no longer receives any illumination information, and the amount of stored charge no longer changes.
  • Photosensitive pixel unit receiving optical switch The optical information received by the photosensitive pixel unit is all derived from the reflected light of the light source illuminating the original, and is theoretically not interfered by other external stray light. Therefore, the output signal of the sensor chip in this embodiment can more realistically restore the original. Information to improve the quality of scanned images.
  • the time for receiving the exposure of the photosensitive pixel unit in this embodiment is precisely controlled by the control circuit, thereby effectively controlling the accuracy of the optical information received by the photosensitive pixel unit, maximally avoiding interference of external stray light, and improving the quality of the scanned image.
  • the embodiment provides a contact image sensor 2 composed of the above photoelectric conversion chip, comprising: a photoelectric conversion chip 201, wherein the time during which the sensor chip receives exposure during a line scanning period can be accurately controlled; Provided to provide light to the original; the frame 203 is configured to support the entire structure; the cover glass 204 is used to protect the internal structure from dust contamination; the lens 205 is used to concentrate the light onto the photoelectric conversion chip; 206, equipped with photoelectric conversion chip and other circuits.
  • the contact image sensor is a line scan device in which the photosensitive pixel units are closely arranged in a line array, and the exposure time (charge accumulation time) of each pixel is uniform in each reading cycle, and after the charge accumulation time is over,
  • the analog switch is controlled by the shift register to be turned on once, and the electrical signals of the pixels are sequentially outputted in the form of analog signals, thereby obtaining an analog image signal of the original, and completing one line of image scanning.
  • the relative position of the original and the contact image sensor is adjusted, and the image of the next line is scanned until the entire original image is scanned and an image is formed.
  • the photoelectric conversion chip 201 in this embodiment is connected in the manner shown in FIG.
  • the array photosensitive pixel unit on the sensor chip In the process of image scanning by the contact image sensor 2, when the light source 202 of the contact image sensor is illuminated, the array photosensitive pixel unit on the sensor chip is in a photosensitive open state under the control of the control signal CNT, and all the photosensitive pixel units are received.
  • the electrical signal output of the photoelectric conversion chip is ensured, and the output of the original information can be truly reflected, thereby ensuring the image quality.
  • the clock CLocK (CLK) is the clock signal of the system operation
  • SI is the scan line period control signal
  • the LED is the light source control signal
  • the SIG is the electrical output signal.
  • CLK clock signal of the system operation
  • SI scan line period control signal
  • the LED is the light source control signal
  • the SIG is the electrical output signal.
  • the light received by the photosensitive pixel unit 103 of the photoelectric conversion chip is the light source illuminating the original and reflected light
  • the light signal at this time is a reaction original.
  • the effective optical signal of the content is photoelectrically converted to form an effective illumination output electrical signal as indicated by the broken line portion of the SIG electrical output signal.
  • the original When the LED signal is low level, in theory, the original will not receive any light source illumination and will not be reflected to the photosensitive pixel unit 103. At this time, no new light energy accumulation will be generated, and the SIG electrical output signal will be converted.
  • the photoelectric conversion chip will still receive external interference stray light without the illumination of the light source, which causes the actual SIG output electrical signal to contain
  • the electrical signal generated by the effective illumination also contains the electrical signal generated by the external interference stray light, that is, the SIG solid line portion in FIG. It can be seen that the influence of external interference stray light causes the signal-to-noise ratio of the SIG output signal to decrease, which inevitably affects the quality of the scanned image.
  • CLK is the clock signal of the system operation
  • SI is the scanning line period control signal
  • the LED is the light source control signal
  • the CNT signal is the photosensitive pixel unit control signal
  • the optical signal at this time is an effective optical signal reflecting the content of the original, and is photoelectrically converted to form an effective light output electrical signal indicated by a broken line portion of the SIG electrical output signal.
  • the control signal CNT also becomes a low level.
  • the photosensitive pixel unit 103 of the photoelectric conversion chip is turned off under the control of the control signal CNT, and no optical signal is received anymore. There will be new accumulation of light energy to convert to the SIG electrical output signal. Therefore, the SIG electrical output signal of the photoelectric conversion chip is the SIG solid line portion in FIG.
  • the SIG dotted line portion and the implementation portion should be completely coincident, but due to the existence of the time delay of the CNT signal and the LED signal, the stray light interference during the exposure of the light source may cause slight differences between the two. But this difference is very small, and can be improved by other means, such as taking better hardware circuits to reduce the delay and the non-reflective processing inside the device.
  • the photosensitive pixel unit receives the precise control of the on and off functions of the optical signal, effectively avoids the interference of the invalid signal generated by the illumination of the light source other than the contact image sensor source, and improves the signal of the output image signal of the contact image sensor. Noise ratio to improve the quality of scanned images.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • a receiving device for controlling an image scanning optical signal is further provided, and the device is configured to implement the above-described embodiments and preferred embodiments, and the description thereof has been omitted.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • FIG. 12 is a structural block diagram of a receiving apparatus for controlling an image scanning optical signal according to an embodiment of the present invention. As shown in FIG. 12, the apparatus includes a transmitting module 1202, which is described in detail below:
  • the sending module 1202 is configured to send a control signal to the array photosensitive pixel unit, wherein the control signal is used to control the receiving of the optical signal by the array photosensitive pixel unit.
  • the sending module 1202 includes: a first receiving unit configured to receive a first control pulse signal sent by the light source when the light source emits light; and a first sending unit configured to: A first control pulse signal is sent to the array photosensitive pixel unit to control a photosensitive pixel of the array photosensitive pixel unit to receive an optical signal of the image reflected under the light source.
  • the sending module 1202 includes: a second receiving unit, configured to receive a second control pulse signal sent by the light source when the light source of the device does not emit light; and a second sending unit, And sending the second control pulse signal to the array photosensitive pixel unit to control the photosensitive pixel point of the array photosensitive pixel unit to stop receiving the optical signal.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • Embodiments of the present invention also provide a storage medium having stored therein a computer program, wherein the computer program is configured to perform the steps of any of the above method embodiments when executed.
  • the above storage medium may be arranged to store a computer program for performing the above steps.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • Embodiments of the present invention also provide an electronic device comprising a memory and a processor having a computer program stored therein, the processor being arranged to execute a computer program to perform the steps of any of the method embodiments described above.
  • the electronic device may further include a transmission device and an input and output device, wherein the transmission device is connected to the processor, and the input and output device is connected to the processor.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Heads (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Image Input (AREA)

Abstract

本发明提供了一种图像扫描装置、控制图像扫描光信号的接收方法及装置，该图像扫描装置，阵列感光像素单元，设置为接收光信号；控制电路，与阵列感光像素单元连接，设置为控制阵列感光像素单元对光信号的接收。通过本发明，可以解决相关技术中图像在扫描周期非曝光时间内容易受到外界杂光干扰，使扫描图像质量下降的问题，达到提高图像扫描质量的效果。

Description

图像扫描装置、控制图像扫描光信号的接收方法及装置 技术领域
本发明涉及通信领域，具体而言，涉及一种图像扫描装置、控制图像扫描光信号的接收方法及装置。
背景技术
接触式图像传感器在金融设备中的应用越来越广泛，随着金融环境日益复杂，金融设备对扫描图像的质量要求不断提高，接触式图像传感器作为金融设备中核心成像部件，其性能直接影响了金融设备的性能。
接触式图像传感器是一种线阵扫描设备，将感光像素单元紧密地排列成线阵，在每一个读取周期每个像素的曝光时间(电荷积蓄时间)是一致的，电荷积蓄时间结束后，由移位寄存器控制模拟开关一次打开，将像素的电信号以模拟信号的形式依次输出，从而得到原稿的模拟图像信号，完成了一行的图像扫描。接下来，调整原稿和接触式图像传感器相对位置，进行下一行的图像扫描，直至原稿整张画面被扫描并形成图像。
在上述接触式图像传感器工作过程中，曝光时间只占每一个行扫描周期的一部分，在这段曝光时间内，光源发出的光照射到原稿上，原稿反射的光被感光芯片接收，并积蓄电荷，形成模拟输出量。但是，在行扫描周期中，在光照之外的其他时间，由于外界杂光干扰的影响，使感光芯片蓄积了一些额外的干扰电量，从而使感光芯片向外输出的模拟信号与真实的原稿图像信息存在差异，从而影响了扫描图像的质量。
综上所述，现有技术中存在着图像在扫描周期非曝光时间内容易受到外界杂光干扰，使扫描图像质量下降的问题。
针对上述技术问题，相关技术尚未提出有效的解决方案。
发明内容
本发明实施例提供了一种图像扫描装置、控制图像扫描光信号的接收 方法及装置，以至少解决相关技术中图像在扫描周期非曝光时间内容易受到外界杂光干扰，使扫描图像质量下降的问题。
根据本发明的一个实施例，提供了一种图像扫描装置，包括：阵列感光像素单元，设置为接收光信号；控制电路，与所述阵列感光像素单元连接，设置为控制所述阵列感光像素单元对光信号的接收。
可选地，所述控制电路设置为至少执行以下操作之一：在所述装置的光源发光时，所述控制电路发出第一控制脉冲信号以控制所述阵列感光像素单元的感光像素点接收所述图像在所述光源下反射的光信号；在所述装置的光源不发光时，所述控制电路发出第二控制脉冲信号以控制所述阵列感光像素单元的感光像素点停止接收光信号。
可选地，所述控制电路包括：控制开关，设置为接收所述光源发出的所述第一控制脉冲信号，并根据所述第一控制脉冲信号控制所述阵列感光像素单元接收所述图像在所述光源下反射的光信号，或者，根据所述第二控制脉冲信号控制所述阵列感光像素单元停止接收光信号。
可选地，所述阵列感光像素单元还设置为将所述光信号转换为电信号，并将所述电信号以电荷的形式进行存储。
可选地，所述图像扫描装置还包括：复位电路，与所述阵列感光像素单元连接，设置为对所述阵列感光像素单元在每一个图像扫描周期内存储的电荷进行复位。
可选地，所述图像扫描装置还包括：开关电路，与所述阵列感光像素单元连接，设置为将所述电信号存储在与所述开关电路连接的电容中；扫描电路，与所述电容连接，设置为接收所述电容传输的电信号，并控制所述电信号的输出；电信号处理电路，与所述扫描电路连接，设置为接收所述扫描电路输出的电信号，并对所述输出的电信号进行处理。
可选地，所述电信号处理电路包括放大器，设置为对处理后的电信号进行放大以输出所述图像的模拟电压信号。
根据本发明的另一个实施例，提供了一种控制图像扫描光信号的接收 方法，包括：向阵列感光像素单元发送控制信号，其中，所述控制信号用于控制所述阵列感光像素单元对光信号的接收。
可选地，向所述阵列感光像素单元发送所述控制信号包括：在光源发光时，接收所述光源发出的第一控制脉冲信号；将所述第一控制脉冲信号发送给所述阵列感光像素单元，以控制所述阵列感光像素单元的感光像素点接收所述图像在所述光源下反射的光信号。
可选地，向所述阵列感光像素单元发送所述控制信号包括：在所述装置的光源不发光时，接收所述光源发出的第二控制脉冲信号；将所述第二控制脉冲信号发送给所述阵列感光像素单元，以控制所述阵列感光像素单元的感光像素点停止接收光信号。
根据本发明的另一个实施例，提供了一种控制图像扫描光信号的接收装置，包括：发送模块，设置为向阵列感光像素单元发送控制信号，其中，所述控制信号用于控制所述阵列感光像素单元对光信号的接收。
可选地，所述发送模块包括：第一接收单元，设置为在光源发光时，接收所述光源发出的第一控制脉冲信号；第一发送单元，设置为将所述第一控制脉冲信号发送给所述阵列感光像素单元，以控制所述阵列感光像素单元的感光像素点接收所述图像在所述光源下反射的光信号。
可选地，所述发送模块包括：第二接收单元，设置为在所述装置的光源不发光时，接收所述光源发出的第二控制脉冲信号；第二发送单元，设置为将所述第二控制脉冲信号发送给所述阵列感光像素单元，以控制所述阵列感光像素单元的感光像素点停止接收光信号。
根据本发明的又一个实施例，还提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
根据本发明的又一个实施例，还提供了一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
通过本发明，由于图像扫描装置中的阵列感光像素单元，设置为接收光信号；控制电路，与阵列感光像素单元连接，设置为控制阵列感光像素单元对光信号的接收；使得控制电路可以控制阵列感光像素单元对光信号接收或者不接收，即可以不接收外界的杂光。因此，可以解决相关技术中图像在扫描周期非曝光时间内容易受到外界杂光干扰，使扫描图像质量下降的问题，达到提高图像扫描质量的效果。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是本发明实施例的一种控制图像扫描光信号的接收方法的移动终端的硬件结构框图；
图2是根据本发明实施例的控制图像扫描光信号的接收方法的流程图；
图3是根据本发明实施例的光电转换芯片示意图；
图4是根据本发明实施例的控制电路示意图；
图5是根据本发明实施例的光电转换芯片的内部控制原理框图；
图6是根据本发明实施例的内部逻辑控制时序示意图(一)；
图7是根据本发明实施例的内部逻辑控制时序示意图(二)；
图8是根据本发明实施例的接触式图像传感器结构示意图；
图9是根据本发明实施例的接触式图像传感器光电转换芯片的连接方式示意图；
图10是相关技术中的接触式图像传感器时序图；
图11是根据本发明实施例的接触式图像传感器时序图；
图12是根据本发明实施例的控制图像扫描光信号的接收装置的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
实施例1
本申请实施例一所提供的方法实施例可以在移动终端、计算机终端或者类似的运算装置中执行。以运行在移动终端上为例，图1是本发明实施例的一种控制图像扫描光信号的接收方法的移动终端的硬件结构框图。如图1所示，移动终端110可以包括一个或多个(图1中仅示出一个)处理器1102(处理器1102可以包括但不限于微处理器MCU或可编程逻辑器件FPGA等的处理装置)和设置为存储数据的存储器1104，可选地，上述移动终端还可以包括设置为通信功能的传输设备1106以及输入输出设备1108。本领域普通技术人员可以理解，图1所示的结构仅为示意，其并不对上述移动终端的结构造成限定。例如，移动终端110还可包括比图1中所示更多或者更少的组件，或者具有与图1所示不同的配置。
存储器1104可设置为存储计算机程序，例如，应用软件的软件程序以及模块，如本发明实施例中的控制图像扫描光信号的接收方法对应的计算机程序，处理器1102通过运行存储在存储器1104内的计算机程序，从而执行各种功能应用以及数据处理，即实现上述的方法。存储器1104可包括高速随机存储器，还可包括非易失性存储器，如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中，存储器1104可进一步包括相对于处理器1102远程设置的存储器，这些远程存储器可以通过网络连接至移动终端110。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输装置1106设置为经由一个网络接收或者发送数据。上述的网络 具体实例可包括移动终端110的通信供应商提供的无线网络。在一个实例中，传输装置1106包括一个网络适配器(Network Interface Controller，简称为NIC)，其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中，传输装置1106可以为射频(Radio Frequency，简称为RF)模块，其设置为通过无线方式与互联网进行通讯。
在本实施例中提供了一种图像扫描装置，具体包括如下内容：阵列感光像素单元，设置为接收光信号；控制电路，与上述阵列感光像素单元连接，设置为控制上述阵列感光像素单元对光信号的接收。在本实施例中，控制电路可以控制阵列感光像素单元对光信号接收或者不接收，即可以不接收外界的杂光。因此，可以解决相关技术中图像在扫描周期非曝光时间内容易受到外界杂光干扰，使扫描图像质量下降的问题，达到提高图像扫描质量的效果。
在一个可选的实施例中，上述控制电路设置为至少执行以下操作之一：在上述装置的光源发光时，上述控制电路发出第一控制脉冲信号以控制上述阵列感光像素单元的感光像素点接收上述图像在上述光源下反射的光信号；在上述装置的光源不发光时，上述控制电路发出第二控制脉冲信号以控制上述阵列感光像素单元的感光像素点停止接收光信号。在本实施例中，控制电路的控制信号可以控制阵列感光像素单元只接收光源的光信号，并不会接受外界的杂光的光信号，即可以提高图像扫描的质量。
在一个可选的实施例中，上述控制电路包括：控制开关，设置为接收上述光源发出的第一控制脉冲信号，并根据上述第一控制脉冲信号控制上述阵列感光像素单元接收上述图像在上述光源下反射的光信号，或者，根据上述第二控制脉冲信号控制上述阵列感光像素单元停止接收光信号。在本实施例中，控制开关是与光源连接的，可以实时根据光源的脉冲信号产生不同的控制脉冲信号，以控制阵列感光像素单元的打开或者是关闭。
在一个可选的实施例中，上述阵列感光像素单元还设置为将上述光信号转换为电信号，并将上述电信号以电荷的形式进行存储。
在一个可选的实施例中，上述图像扫描装置还包括：复位电路，与上述阵列感光像素单元连接，设置为对上述阵列感光像素单元在每一个图像扫描周期内存储的电荷进行复位。在本实施例中，复位电路可实现感光像素单元的复位，每一个扫描行周期开始，对上一个行扫描周期感光像素单元所蓄积的电荷进行清零，防止行间干扰的发生。
在一个可选的实施例中，上述图像扫描装置还包括：开关电路，与上述阵列感光像素单元连接，设置为将上述电信号存储在与上述开关电路连接的电容中；扫描电路，与上述电容连接，设置为接收上述电容传输的电信号，并控制上述电信号的输出；电信号处理电路，与上述扫描电路连接，设置为接收上述扫描电路输出的电信号，并对上述输出的电信号进行处理。上述电信号处理电路包括放大器，设置为对处理后的电信号进行放大以输出上述图像的模拟电压信号。在本实施例中，上述开关电路主要是设置为将阵列感光像素单元存储的电荷进行传输，形成比特Bit-s输出信号，Bit-s信号经过电信号处理电路的处理，最后输出经过放大处理的可变速一体化发电机(Variable Speed Integrated Generator Confidential，简称为VSIG)信号，VSIG信号为每个感光像素单元接收的光照信息转化的电信号的模拟电压信号。
实施例2：
在本实施例中提供了一种控制图像扫描光信号的接收方法，图2是根据本发明实施例的控制图像扫描光信号的接收方法的流程图，如图2所示，该流程包括如下步骤：
步骤S2202，向阵列感光像素单元发送控制信号，其中，上述控制信号用于控制上述阵列感光像素单元对光信号的接收。
通过上述步骤，控制电路向阵列感光像素单元发送控制信号以控制阵列感光像素单元对光信号的接收。使得控制电路可以控制阵列感光像素单元对光信号接收或者不接收，即可以不接收外界的杂光。因此，可以解决 相关技术中图像在扫描周期非曝光时间内容易受到外界杂光干扰，使扫描图像质量下降的问题，达到提高图像扫描质量的效果。
可选地，上述步骤的执行主体可以为控制电路等，但不限于此。
在一个可选的实施例中，向上述阵列感光像素单元发送上述控制信号包括：在光源发光时，接收上述光源发出的第一控制脉冲信号；将上述第一控制脉冲信号发送给上述阵列感光像素单元，以控制上述阵列感光像素单元的感光像素点接收上述图像在上述光源下反射的光信号。
在一个可选的实施例中，向上述阵列感光像素单元发送上述控制信号包括：在上述装置的光源不发光时，接收上述光源发出的第二控制脉冲信号；将上述第二控制脉冲信号发送给上述阵列感光像素单元，以控制上述阵列感光像素单元的感光像素点停止接收光信号。
在上述实施例中，上述中的第一控制脉冲信号是根据高电平信号生成的，上述中的第二控制脉冲信号是根据低电平信号生成的。
下面结合具体实施例对本发明进行详细说明：
本实施例主要是提供一种行扫描周期内接收曝光的时间可精确控制的光电转换芯片，及由其构成的接触式图像传感器。可以解决行扫描周期内，曝光时间之外的杂光干扰引起的图像质量变差的问题。
本实施例中的光电转换芯片，由阵列感光像素单元和控制电路两部分组成，其中阵列感光像素单元设置为接收外界光照并将光照的信息转化成电信号，控制电路部分设置为光电转换芯片的时序、工作模式、模拟电信号存储输出等的控制。
本实施例中的阵列感光像素单元接收曝光的时间由控制电路精确控制，从而有效控制感光像素单元接收到的光信息的准确性，最大限度的避免外界杂光的干扰，提高扫描图像质量。
在每一个行扫描周期内，当图像读取设备的光源点亮时，阵列感光像 素单元在控制信号的控制下处于感光开状态，全部像素点(对应于上述中的感光像素点)接收来自原稿(对应于上述中的图像)反射的光信息；当图像读取设备的光源关闭时，阵列感光像素单元在控制信号的控制下处于感光关状态，全部像素点不再接收任何光照信息。通过这种感光像素单元接收光信号功能的开和关的精确控制，有效避免了除图像读取设备光源之外的其他光源的光照产生的无效信号的干扰，提高图像读取设备输出电信号的信噪比，提高扫描图像质量。
本实施例还提供一种由上述光电转换芯片构成的接触式图像传感器(相当于上述中的图像扫描装置)。包括起支撑作用的框体，框体内设有光学透镜，透镜的侧面设有光源，透镜的下方设有线路板，线路板上设有传感器芯片，使得传感器芯片在行扫描周期内接收曝光的时间可精确控制。
接触式图像传感器进行图像扫描的过程中，当接触式图像传感器的光源点亮时，传感器芯片上的阵列感光像素单元在控制信号的控制下处于感光开状态，全部像素点接收来自原稿反射的光信息；当接触式图像传感器的光源关闭时，传感器芯片上的阵列感光像素单元在控制信号的控制下处于感光关状态，全部像素点不再接收任何光照信息。通过这种感光像素单元接收光信号功能的开和关的精确控制，有效避免了除接触式图像传感器光源之外的其他光源的光照产生的无效信号的干扰，提高接触式图像传感器输出电信号的信噪比，提高扫描图像质量。
如图3所示，提供一种光电转换芯片1，由阵列感光像素单元101和控制电路102两部分组成，其中阵列感光像素单元101上呈线性的排布感光像素单元103(对应于上述中的感光像素点)，设置为接收外界光源的光照，感光像素单元为光敏感材料构成，可以将一定时间内接受的光照进行累积并转化成电荷储存起来，实现光信号到电信号的转换。控制电路部分102，设置为光电转换芯片的时序、工作模式、模拟电信号存储输出等的控制，其上有多个信号输入输出端口104，设置为电信号的输入与输出。如图4所示，是控制电路102的详细图，由放大器、线寄存器、开关部和扫描电路和控制电路、放大电路及信号输入输出端口四部分组成。
本实施例的光电转换芯片的内部控制原理框图如图5所示，本实施例光电转换芯片主要由复位电路、光电转换电路、线寄存器和开关电路、扫描电路、电信号处理电路几部分组成。其中，复位电路可实现感光像素单元的复位，每一个扫描行周期开始，对上一个行扫描周期感光像素单元所蓄积的电荷进行复位清零，防止行间干扰的发生；光电转换电路中的感光像素单元在接收光照射之后，将光信号转换成电信号，以电荷的方式存储起来，并进行传输；光电转换电路的电输出信号通过开关
Figure PCTCN2018103924-appb-000001
的控制存储在电容Ct中，在扫描电路的输出信号sch-n的控制下，逐个地输出，如图7所示，形成Bit-s输出信号，Bit-s信号经过电信号处理电路的处理，最后输出经过放大处理的VSIG信号，VSIG信号为每个感光像素单元接收的光照信息转化的电信号的模拟电压信号。
本实施例中的传感器芯片增加了光接收电路的控制开关
Figure PCTCN2018103924-appb-000002
(对应于上述中的控制开关)，
Figure PCTCN2018103924-appb-000003
与外部led的点灯脉冲信号相关联，是与led控制脉冲信号同步的脉冲信号，起到控制感光像素单元接收外界光照的开关的作用，如图6所示，光电转换芯片在行扫描周期开始脉冲SI信号的正向脉冲的启动下开始处于工作状态，当
Figure PCTCN2018103924-appb-000004
为高电位的情况下，上一个行扫描周期存储在电容Ct内的电荷开始向电信号处理电路输出，电信号输出完成之后，复位信号
Figure PCTCN2018103924-appb-000005
信号输出为高电位，此时感光像素单元被复位，复位完成之后，每个感光像素单元上蓄积的电荷为零。当外界光源点灯脉冲LED信号处于高电位，同时感光像素单元接收光开关信号
Figure PCTCN2018103924-appb-000006
处于高电位，此时感光像素单元处于接收光照开的状态，外界光源在LED脉冲的控制下开始发光，并照射在原稿上，原稿的反射光被感光像素单元接收并转化为电荷储存，当外界光源点灯脉冲LED信号处于低电位，同时感光像素单元接收光开关信号
Figure PCTCN2018103924-appb-000007
处于低电位，此时感光像素单元处于接收光照关的状态，此时感光像素单元不再接收任何光照信息，储存的电荷量不再变化。当感光像素单元完成了上述的光信号向电信号的转化之后，感光像素单元存储的电荷，将在如图5所示的扫描电路和电信号处理电路的控制下，进行如图7所示的传输，并完成最终的扫描电信号的输出。由 于感光像素单元接收光开关
Figure PCTCN2018103924-appb-000008
的存在，感光像素单元接收的光信息全部来源于光源照射原稿的反射光，理论上不会受到其他外界杂光的干扰，因此本实施例中的传感器芯片的输出信号可以更真实的还原原稿的信息，提高扫描图像质量。
本实施例中的感光像素单元接收曝光的时间由控制电路精确控制，从而有效控制感光像素单元接收到的光信息的准确性，最大限度的避免外界杂光的干扰，提高扫描图像质量。
如图8所示，本实施例提供一种由上述光电转换芯片构成的接触式图像传感器2，包括：光电转换芯片201，传感器芯片在行扫描周期内接收曝光的时间可精确控制；光源202，设置为提供光照射到原稿上；框体203，设置为支撑整个结构；玻璃盖板204，用来保护内部结构不被灰尘污染；透镜205，用来将光汇聚到光电转换芯片上；线路板206，搭载光电转换芯片上和其他电路。
接触式图像传感器是一种线阵扫描设备，将感光像素单元紧密地排列成线阵，在每一个读取周期每个像素的曝光时间(电荷积蓄时间)是一致的，电荷积蓄时间结束后，由移位寄存器控制模拟开关一次打开，将像素的电信号以模拟信号的形式依次输出，从而得到原稿的模拟图像信号，完成了一行的图像扫描。接下来，调整原稿和接触式图像传感器相对位置，进行下一行的图像扫描，直至原稿整张画面被扫描并形成图像。
本实施例中的光电转换芯片201采用图9所示的方式连接。在接触式图像传感器2进行图像扫描的过程中，当接触式图像传感器的光源202点亮时，传感器芯片上的阵列感光像素单元在控制信号CNT的控制下处于感光开状态，全部感光像素单元接收来自原稿反射的并通过透镜205的光信息；当接触式图像传感器的光源关闭时，传感器芯片上的阵列感光像素单元在控制信号的控制CNT下处于感光关状态，全部感光像素单元不再接收任何光照信息。通过这种感光像素单元精确的接收有效光照的控制，确保光电转换芯片的电信号输出，是能够真实反映原稿信息的输出，从而 保证了图像的质量。
现有技术的接触式图像传感器工作时序图如图10所示，时钟CLocK(CLK)为系统工作的时钟信号，SI为扫描行周期控制信号，LED为光源控制信号，SIG为电输出信号。在每一个行周期内，当设备光源点亮时，即LED信号为高电平时，光电转换芯片的感光像素单元103接收的光为光源照射原稿并反射的光，此时的光信号是反应原稿内容的有效光信号，经光电转换后形成SIG电输出信号中的虚线部分所示的有效光照输出电信号。当LED信号为低电平时，理论上，原稿不会接收任何光源的照射也不会反射到感光像素单元103上，此时，不会有新的光能量累积，来转换成SIG电输出信号，但是，实际应用中，由于设备的密封和避光不完善，使光电转换芯片在没有光源照射的情况下，依然会接收到外界干扰杂光，这就造成了，实际的SIG输出电信号既包含了有效光照产生的电信号也包含了外界干扰杂光产生的电信号，即图10中SIG实线部分。可见，外界干扰杂光的影响使得SIG输出信号的信噪比下降，必然会影响扫描图像的质量。
本实施例中的接触式图像传感器工作时序图如图11所示，CLK为系统工作的时钟信号，SI为扫描行周期控制信号，LED为光源控制信号，CNT信号为感光像素单元控制信号，SIG为电输出信号。在每一个行周期内，当设备光源点亮时，即LED信号为高电平时，控制信号CNT也随之变为高电平，光电转换芯片的感光像素单元103在控制信号CNT的控制下开启，接收原稿反射的光，此时的光信号是反应原稿内容的有效光信号，经光电转换后形成SIG电输出信号中的虚线部分所示的有效光照输出电信号。当LED信号为低电平时，控制信号CNT也随之变为低电平，此时光电转换芯片的感光像素单元103在控制信号CNT的控制下关闭，不再接收任何光信号，此时，不会有新的光能量累积，来转换成SIG电输出信号。因此，光电转换芯片的SIG电输出信号为图11中SIG实线部分。理想状态下，上述SIG虚线部分和实现部分应该是完全重合的，但是由于CNT信号和LED信号的时间延迟的存在，光源曝光过程中的杂光干扰等 因素会造成两者间有细微的差异。但是这种差异非常小，而且是可以通过其他手段，如采取更好的硬件电路来减小延迟和设备内部的不反光处理等方法来改善。
这种感光像素单元接收光信号功能的开和关的精确控制，有效避免了除接触式图像传感器光源之外的其他光源的光照产生的无效信号的干扰，提高接触式图像传感器输出电信号的信噪比，提高扫描图像质量。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
实施例3
在本实施例中还提供了一种控制图像扫描光信号的接收装置，该装置设置为实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图12是根据本发明实施例的控制图像扫描光信号的接收装置的结构框图，如图12所示，该装置包括发送模块1202，下面对该装置进行详细说明：
发送模块1202，设置为向阵列感光像素单元发送控制信号，其中，所述控制信号用于控制所述阵列感光像素单元对光信号的接收。
在一个可选的实施例中，所述发送模块1202包括：第一接收单元，设置为在光源发光时，接收所述光源发出的第一控制脉冲信号；第一发送 单元，设置为将所述第一控制脉冲信号发送给所述阵列感光像素单元，以控制所述阵列感光像素单元的感光像素点接收所述图像在所述光源下反射的光信号。
在一个可选的实施例中，所述发送模块1202包括：第二接收单元，设置为在所述装置的光源不发光时，接收所述光源发出的第二控制脉冲信号；第二发送单元，设置为将所述第二控制脉冲信号发送给所述阵列感光像素单元，以控制所述阵列感光像素单元的感光像素点停止接收光信号。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
本发明的实施例还提供了一种存储介质，该存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以上各步骤的计算机程序。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
本发明的实施例还提供了一种电子装置，包括存储器和处理器，该存储器中存储有计算机程序，该处理器被设置为运行计算机程序以执行上述任一项方法实施例中的步骤。
可选地，上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器连接，该输入输出设备和上述处理器连接。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤 可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (15)

  1. 一种图像扫描装置，包括：
    阵列感光像素单元，设置为接收光信号；
    控制电路，与所述阵列感光像素单元连接，设置为控制所述阵列感光像素单元对光信号的接收。
  2. 根据权利要求1所述的装置，其中，所述控制电路设置为至少执行以下操作之一：
    在所述装置的光源发光时，所述控制电路发出第一控制脉冲信号以控制所述阵列感光像素单元的感光像素点接收所述图像在所述光源下反射的光信号；
    在所述装置的光源不发光时，所述控制电路发出第二控制脉冲信号以控制所述阵列感光像素单元的感光像素点停止接收光信号。
  3. 根据权利要求2所述的装置，其中，所述控制电路包括：
    控制开关，设置为接收所述光源发出的第一控制脉冲信号，并根据所述第一控制脉冲信号控制所述阵列感光像素单元接收所述图像在所述光源下反射的光信号，或者，根据所述第二控制脉冲信号控制所述阵列感光像素单元停止接收光信号。
  4. 根据权利要求1所述的装置，其中，所述阵列感光像素单元还设置为将所述光信号转换为电信号，并将所述电信号以电荷的形式进行存储。
  5. 根据权利要求4所述的装置，其中，所述图像扫描装置还包括：
    复位电路，与所述阵列感光像素单元连接，设置为对所述阵列感光像素单元在每一个图像扫描周期内存储的电荷进行复位。
  6. 根据权利要求4所述的装置，其中，所述图像扫描装置还包括：
    开关电路，与所述阵列感光像素单元连接，设置为将所述电信号存储在与所述开关电路连接的电容中；
    扫描电路，与所述电容连接，设置为接收所述电容传输的电信号，并控制所述电信号的输出；
    电信号处理电路，与所述扫描电路连接，设置为接收所述扫描电路输出的电信号，并对所述输出的电信号进行处理。
  7. 根据权利要求6所述的装置，其中，所述电信号处理电路包括放大器，设置为对处理后的电信号进行放大以输出所述图像的模拟电压信号。
  8. 一种控制图像扫描光信号的接收方法，包括：
    向阵列感光像素单元发送控制信号，其中，所述控制信号用于控制所述阵列感光像素单元对光信号的接收。
  9. 根据权利要求8所述的方法，其中，向所述阵列感光像素单元发送所述控制信号包括：
    在光源发光时，接收所述光源发出的第一控制脉冲信号；
    将所述第一控制脉冲信号发送给所述阵列感光像素单元，以控制所述阵列感光像素单元的感光像素点接收所述图像在所述光源下反射的光信号。
  10. 根据权利要求8所述的方法，其中，向所述阵列感光像素单元发送所述控制信号包括：
    在光源不发光时，接收所述光源发出的第二控制脉冲信号；
    将所述第二控制脉冲信号发送给所述阵列感光像素单元，以控制所述阵列感光像素单元的感光像素点停止接收光信号。
  11. 一种控制图像扫描光信号的接收装置，包括：
    发送模块，设置为向阵列感光像素单元发送控制信号，其中，所 述控制信号用于控制所述阵列感光像素单元对光信号的接收。
  12. 根据权利要求11所述的装置，其中，所述发送模块包括：
    第一接收单元，设置为在光源发光时，接收所述光源发出的第一控制脉冲信号；
    第一发送单元，设置为将所述第一控制脉冲信号发送给所述阵列感光像素单元，以控制所述阵列感光像素单元的感光像素点接收所述图像在所述光源下反射的光信号。
  13. 根据权利要求11所述的装置，其中，所述发送模块包括：
    第二接收单元，设置为在所述装置的光源不发光时，接收所述光源发出的第二控制脉冲信号；
    第二发送单元，设置为将所述第二控制脉冲信号发送给所述阵列感光像素单元，以控制所述阵列感光像素单元的感光像素点停止接收光信号。
  14. 一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求1至10任一项中所述的方法。
  15. 一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行所述权利要求8至10任一项中所述的方法。
PCT/CN2018/103924 2018-01-31 2018-09-04 图像扫描装置、控制图像扫描光信号的接收方法及装置 WO2019148835A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US16/621,253 US11190665B2 (en) 2018-01-31 2018-09-04 Image scanning apparatus, and method and apparatus for controlling receiving of image scanning optical signal
KR1020207024949A KR102430012B1 (ko) 2018-01-31 2018-09-04 이미지 스캐닝 장치, 이미지 스캐닝 광 신호의 수신 제어 방법 및 장치
JP2020542109A JP7179071B2 (ja) 2018-01-31 2018-09-04 画像走査装置、画像走査光信号受信の制御方法及び装置
EP18904431.6A EP3637753A4 (en) 2018-01-31 2018-09-04 IMAGE SCANNING APPARATUS AND METHOD AND DEVICE FOR CONTROLLING RECEPTION OF AN IMAGE SCANNING OPTICAL SIGNAL

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810096676.3 2018-01-31
CN201810096676.3A CN108270942B (zh) 2018-01-31 2018-01-31 图像扫描装置、控制图像扫描光信号的接收方法及装置

Publications (1)

Publication Number Publication Date
WO2019148835A1 true WO2019148835A1 (zh) 2019-08-08

Family

ID=62777029

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/103924 WO2019148835A1 (zh) 2018-01-31 2018-09-04 图像扫描装置、控制图像扫描光信号的接收方法及装置

Country Status (6)

Country Link
US (1) US11190665B2 (zh)
EP (1) EP3637753A4 (zh)
JP (1) JP7179071B2 (zh)
KR (1) KR102430012B1 (zh)
CN (1) CN108270942B (zh)
WO (1) WO2019148835A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108270942B (zh) 2018-01-31 2020-09-25 威海华菱光电股份有限公司 图像扫描装置、控制图像扫描光信号的接收方法及装置
CN111126295A (zh) * 2019-12-25 2020-05-08 北京集创北方科技股份有限公司 生物特征图像的采集装置及采集方法、智能设备
CN112422853A (zh) * 2020-11-19 2021-02-26 苏州新晶腾光电科技有限公司 一种影像传感芯片的抗杂光方法
CN113466830B (zh) * 2021-05-21 2023-08-29 北京控制工程研究所 一种基于光学微开关的激光雷达接收光学系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201497576U (zh) * 2009-08-26 2010-06-02 威海华菱光电有限公司 接触式图像传感器
CN103458158A (zh) * 2013-09-09 2013-12-18 电子科技大学 线阵相机曝光时间的控制方法及其系统
US20160094749A1 (en) * 2014-09-29 2016-03-31 Brother Kogyo Kabushiki Kaisha Image reading apparatus and non-transitory computer readable medium
CN105679782A (zh) * 2014-11-20 2016-06-15 上海箩箕技术有限公司 接触式图像传感器
CN108270942A (zh) * 2018-01-31 2018-07-10 威海华菱光电股份有限公司 图像扫描装置、控制图像扫描光信号的接收方法及装置
CN207820026U (zh) * 2018-01-31 2018-09-04 威海华菱光电股份有限公司 图像扫描装置、控制图像扫描光信号的接收装置

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09102849A (ja) * 1995-10-05 1997-04-15 Ricoh Elemex Corp 画像読取装置
JP3097577B2 (ja) * 1996-11-22 2000-10-10 松下電器産業株式会社 入出力一体型情報操作装置
JPH10233891A (ja) * 1997-02-19 1998-09-02 Seiko Epson Corp 原稿読取装置
JP3147887B2 (ja) * 1999-04-28 2001-03-19 セイコーエプソン株式会社 撮像装置の線形性測定方法および画像読み取り装置
US7335963B2 (en) * 2004-08-25 2008-02-26 Micron Technology, Inc. Light block for pixel arrays
TW200708062A (en) * 2005-08-01 2007-02-16 Lite On Technology Corp Contact image sensor
US20070075218A1 (en) * 2005-10-04 2007-04-05 Gates John V Multiple exposure optical imaging apparatus
US8223227B2 (en) * 2006-09-28 2012-07-17 Nokia Corporation Read out method for a CMOS imager with reduced dark current
US20090140049A1 (en) * 2007-11-30 2009-06-04 Rong Liu Stray light reduction in imaging reader
JP5156420B2 (ja) * 2008-02-06 2013-03-06 京セラドキュメントソリューションズ株式会社 画像形成装置
JP5544761B2 (ja) * 2008-10-03 2014-07-09 株式会社リコー 定着装置及び画像形成装置
JP5321341B2 (ja) * 2009-08-07 2013-10-23 コニカミノルタ株式会社 定着装置及び画像形成装置
FR2959901B1 (fr) * 2010-05-04 2015-07-24 E2V Semiconductors Capteur d'image a matrice d'echantillonneurs
JP2012199764A (ja) * 2011-03-22 2012-10-18 Konica Minolta Business Technologies Inc 画像読み取り装置
JP6231799B2 (ja) * 2013-07-18 2017-11-15 キヤノン株式会社 画像処理装置および画像処理方法とプログラム
US9804000B2 (en) * 2013-09-25 2017-10-31 Yun-Shan Chang Optical sensor array apparatus
TW201520832A (zh) * 2013-11-28 2015-06-01 Pixart Imaging Inc 適於偵測環境光與提起之光學導航系統及其偵測方法
JP6201924B2 (ja) * 2014-07-28 2017-09-27 コニカミノルタ株式会社 シート搬送装置および画像形成装置
CN104822028A (zh) * 2015-05-05 2015-08-05 京东方科技集团股份有限公司 一种电子快门控制方法及装置
CN106469436B (zh) * 2015-08-17 2019-11-08 比亚迪股份有限公司 图像去噪系统及图像去噪方法
SG11201800816VA (en) * 2015-12-18 2018-02-27 Guangdong Oppo Mobile Telecommunications Corp Ltd Image sensor, control method, and electronic device
JP6642105B2 (ja) * 2016-02-26 2020-02-05 セイコーエプソン株式会社 画像読取装置及び半導体装置
CN106507080B (zh) * 2016-11-29 2018-07-17 广东欧珀移动通信有限公司 控制方法、控制装置及电子装置
CN106454288B (zh) * 2016-11-29 2018-01-19 广东欧珀移动通信有限公司 控制方法、控制装置、成像装置及电子装置
CN106412407B (zh) * 2016-11-29 2019-06-07 Oppo广东移动通信有限公司 控制方法、控制装置及电子装置
WO2019127577A1 (zh) * 2017-12-30 2019-07-04 深圳信炜科技有限公司 感光装置的光感测方法
KR20200108133A (ko) * 2019-03-06 2020-09-17 삼성전자주식회사 이미지 센서 및 이미징 장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201497576U (zh) * 2009-08-26 2010-06-02 威海华菱光电有限公司 接触式图像传感器
CN103458158A (zh) * 2013-09-09 2013-12-18 电子科技大学 线阵相机曝光时间的控制方法及其系统
US20160094749A1 (en) * 2014-09-29 2016-03-31 Brother Kogyo Kabushiki Kaisha Image reading apparatus and non-transitory computer readable medium
CN105679782A (zh) * 2014-11-20 2016-06-15 上海箩箕技术有限公司 接触式图像传感器
CN108270942A (zh) * 2018-01-31 2018-07-10 威海华菱光电股份有限公司 图像扫描装置、控制图像扫描光信号的接收方法及装置
CN207820026U (zh) * 2018-01-31 2018-09-04 威海华菱光电股份有限公司 图像扫描装置、控制图像扫描光信号的接收装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3637753A4 *

Also Published As

Publication number Publication date
KR102430012B1 (ko) 2022-08-04
EP3637753A1 (en) 2020-04-15
US11190665B2 (en) 2021-11-30
EP3637753A4 (en) 2020-08-12
US20210281703A1 (en) 2021-09-09
JP2021517380A (ja) 2021-07-15
CN108270942A (zh) 2018-07-10
CN108270942B (zh) 2020-09-25
JP7179071B2 (ja) 2022-11-28
KR20200112963A (ko) 2020-10-05

Similar Documents

Publication Publication Date Title
WO2019148835A1 (zh) 图像扫描装置、控制图像扫描光信号的接收方法及装置
CN109639988B (zh) 电子装置以及自动曝光收敛方法
TW201911855A (zh) 具有堆疊基板的光感測器的偵測電路
CN104486987A (zh) 具有最小面积单片式cmos图像传感器的相机系统
ES2732973T3 (es) Método y aparato de procesamiento de imagen y dispositivo electrónico
US20060071171A1 (en) Radiographic imaging apparatus and system, method therefor, and program
RU2010139526A (ru) Устройство съемки изображения и система камеры
JP2018502492A (ja) 結像方法、結像装置及び電子装置
US20190341411A1 (en) Image sensor including an extra transfer gate and an extra floating diffusion region
JP2000312308A (ja) イメージングセンサ、撮像方法、画像処理装置及び画像処理方法
KR20200001165A (ko) 이미지 센서, 픽셀 어레이 및 그 동작 방법
WO2017101559A1 (zh) 图像传感器及具有其的终端、成像方法
KR20230135501A (ko) 이미지 센서 및 그 이미지 출력 방법과 응용
US9654715B2 (en) Solid-state image sensor, method of controlling the same, electronic device, and storage medium
CN107707846B (zh) 一种cis参数校正方法、装置、设备及存储介质
RU2640755C1 (ru) Устройство компьютерной системы для телевизионного кругового обзора внутренней поверхности труб и трубопроводов большого диаметра
CN102498435A (zh) 设备、方法和计算机可读存储介质
US20100277610A1 (en) Apparatus, Method And Computer Program Product Providing a Light Source With Memory
CN115174819A (zh) 一种曝光控制方法、装置、设备及介质
US10540733B2 (en) Frameless random-access image sensing
CN110278391A (zh) 图像感测装置及利用其的显示装置
US12010444B2 (en) Image sensor, image acquisition apparatus, and electronic apparatus including the image acquisition apparatus for synchronization and serialization of generated pulses
TWI237493B (en) Digital contact image sensor apparatus and control method
WO2022141822A1 (zh) 一种像素电路及全局cmos图像传感器
US20230171518A1 (en) Image sensor, image acquisition apparatus, and electronic apparatus including the image acquisition apparatus

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18904431

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2018904431

Country of ref document: EP

Effective date: 20200108

ENP Entry into the national phase

Ref document number: 2020542109

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20207024949

Country of ref document: KR

Kind code of ref document: A