CN111064880A - Image acquisition device and artificial retina in-vitro device - Google Patents

Image acquisition device and artificial retina in-vitro device Download PDF

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CN111064880A
CN111064880A CN202010186791.7A CN202010186791A CN111064880A CN 111064880 A CN111064880 A CN 111064880A CN 202010186791 A CN202010186791 A CN 202010186791A CN 111064880 A CN111064880 A CN 111064880A
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李秋成
梁业兴
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Shenzhen Zhongke Xianjian Medical Technology Co ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/14Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40Circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/10Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths

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Abstract

The present application relates to an image acquisition device and an artificial retina extracorporeal device; the image acquisition equipment comprises an STM single chip microcomputer, an image sensor and a camera, wherein the camera is used for acquiring a CVBS analog signal and transmitting the CVBS analog signal to the image sensor; the image sensor is used for converting the CVBS analog signal into a digital image signal and transmitting the digital image signal to the STM singlechip; a FID signal is fused in a VSYNC signal of the digital image signal; the STM singlechip is arranged in gathering the first type data in the digital image signal when the VSYNC signal is first level to with the first type data cache in first buffer memory, realized the camera that the STM singlechip can connect the CVBS type, thereby realized the separation of STM singlechip and camera length distance, the image acquisition equipment simple structure of this application is favorable to reducing manufacturing cost.

Description

Image acquisition device and artificial retina in-vitro device
Technical Field
The application relates to the technical field of intelligent camera shooting wearable equipment, in particular to image acquisition equipment and artificial retina in-vitro equipment.
Background
With the continuous development of image acquisition technology, the application of image acquisition equipment is also more and more extensive, for example, in the application of products such as indoor monitoring equipment, artificial retina products and the like, a design of separating a camera from a host computer in a long distance needs to be adopted, at present, a general design scheme is to adopt an SOC (System-on-a-Chip) Chip or an FPGA (field programmable Gate Array) Chip to connect the camera through bluetooth, WIFI or a physical line, but in the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the traditional image acquisition equipment has high separated design cost and large equipment volume.
Disclosure of Invention
Based on this, it is necessary to provide an image capturing apparatus and an artificial retina extracorporeal apparatus for solving the problems of high cost and large apparatus volume of the separated design of the conventional image capturing apparatus.
In order to achieve the above object, on one hand, an embodiment of the application provides an image acquisition device, which includes an STM single chip microcomputer, an image sensor and a camera;
the STM single chip microcomputer is connected with the image sensor through a DCMI interface and an IIC interface respectively; the image sensor is connected with the camera through a CVBS interface;
the camera is used for acquiring a CVBS analog signal and transmitting the CVBS analog signal to the image sensor; the image sensor is used for converting the CVBS analog signal into a digital image signal and transmitting the digital image signal to the STM singlechip; a FID signal is fused in a VSYNC signal of the digital image signal;
the STM single chip microcomputer is used for acquiring first type data in the digital image signals when the VSYNC signals are at a first level and caching the first type data in a first cache region; the STM single chip microcomputer is used for acquiring second data in the digital image signals when the VSYNC signals are at a second level and caching the second data in a second cache region;
the first level and the second level are both one of a high level and a low level, and the first level and the second level are different from each other; the first type data and the second type data are one of odd field data and even field data, and the first type data and the second type data are different from each other.
In one embodiment, the STM single chip microcomputer is further used for circularly and alternately acquiring display data from the first type of data and the second type of data when outputting the display data; and the display data acquired at each time is a row of data in the first type of data or the second type of data.
In one embodiment, the STM single chip microcomputer is further configured to amplify the digital image signal before format conversion by 256 times and reduce the digital image signal after format conversion by 256 times when converting the digital image signal from YUV format to RGB format.
In one embodiment, the STM singlechip is an STM32 type singlechip; the image sensor is an ADV7182 type image sensor.
On the other hand, the embodiment of the application also provides an artificial retina extracorporeal device, which comprises the image acquisition device; the system also comprises data transmission equipment;
the data transmission equipment is connected with an STM single chip microcomputer of the image acquisition equipment;
wherein the image data transmission device is used for transmitting the image data to the in-vivo retina chip.
In one embodiment, the image data transmission device comprises a radio frequency signal transceiving chip, a first matching circuit and a data coil;
the radio frequency signal transceiver chip is connected with the STM single chip microcomputer; the first matching circuit is connected between the radio frequency signal transceiving chip and the data coil.
In one embodiment, the radio frequency signal transceiver chip is a TRF7970A type chip.
In one embodiment, the device further comprises an energy transmission device and a power supply device;
the power supply equipment is respectively connected with the energy transmission equipment and the STM singlechip of the image acquisition equipment;
wherein the energy transmission device is used for transmitting energy to the retina chip in vivo.
In one embodiment, the energy transfer device comprises a radio frequency power amplifier, a second matching circuit and an energy coil;
the radio frequency power amplifier is connected with power supply equipment; the second matching circuit is connected between the radio frequency power amplifier and the energy coil.
In one embodiment, the power supply device includes a battery and a DC/DC power supply;
the DC/DC power supply is respectively connected with the battery and the radio frequency power amplifier.
One of the above technical solutions has the following advantages and beneficial effects:
the image acquisition equipment provided by the embodiments of the application comprises an STM single chip microcomputer, an image sensor and a camera; the STM single chip microcomputer is connected with the image sensor through a DCMI interface and an IIC interface respectively; the image sensor is connected with the camera through a CVBS interface; the camera is used for acquiring a CVBS analog signal and transmitting the CVBS analog signal to the image sensor; the image sensor is used for converting the CVBS analog signal into a digital image signal and transmitting the digital image signal to the STM singlechip; a FID signal is fused in a VSYNC signal of the digital image signal; the STM single chip microcomputer is used for acquiring first type data in the digital image signals when the VSYNC signals are at a first level and caching the first type data in a first cache region; the STM singlechip is used for when the VSYNC signal is the second level, gather the second type data in the digital image signal, and with second type data buffer in the second buffer memory district, realized that the STM singlechip can connect the camera of CVBS type, thereby utilize the characteristic that the CVBS analog signal can long distance transmission, realize the separation of STM singlechip and camera long distance, and the image acquisition equipment simple structure of this application, be favorable to reducing manufacturing cost and be favorable to the miniaturization.
Drawings
FIG. 1 is a schematic diagram showing the structure of an image capturing apparatus according to an embodiment;
FIG. 2 is a schematic diagram of the structure of an artificial retina extracorporeal device in one embodiment;
FIG. 3 is a schematic diagram of the structure of a data transmission apparatus according to an embodiment;
FIG. 4 is a schematic diagram showing the construction of an artificial retina extracorporeal device in another embodiment;
FIG. 5 is a schematic diagram of the structure of an energy transmission device in one embodiment;
fig. 6 is a schematic structural diagram of a power supply device in one embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In order to solve the problems of high cost and large size of a separate design of the conventional image acquisition equipment, as shown in fig. 1, in one embodiment, an image acquisition equipment is provided, which comprises an STM single chip microcomputer 11, an image sensor 13 and a camera 15;
the STM single chip microcomputer 11 is connected to the image sensor 13 through a DCMI (Digital camera interface) interface and an IIC (inter-integrated circuit bus) interface; the image sensor 13 is connected to the camera 15 through a CVBS (Composite synchronous video broadcast signal) interface;
the camera 15 is used for acquiring a CVBS analog signal and transmitting the CVBS analog signal to the image sensor 13; the image sensor 13 is used for converting the CVBS analog signal into a digital image signal and transmitting the digital image signal to the STM singlechip 11; a FID signal is fused in a VSYNC signal of the digital image signal;
the STM single chip microcomputer 11 is used for acquiring first-class data in the digital image signals when the VSYNC signals are at a first level and caching the first-class data in a first cache region; the STM singlechip 11 is used for acquiring second data in the digital image signal when the VSYNC signal is at a second level and caching the second data in a second cache region;
the first level and the second level are both one of a high level and a low level, and the first level and the second level are different from each other; the first type data and the second type data are one of odd field data and even field data, and the first type data and the second type data are different from each other.
It should be noted that, in the conventional technology, the STM single chip microcomputer can only support DCMI cameras, such as OV2640, OV7725, and the like, and the longest flexible flat cable of these DCMI cameras can only be about 20CM (centimeter), which results in that the STM single chip microcomputer cannot be used in the application scene of long-distance signal transmission, such as the situation that the cameras and the processor unit are split, for example, in the case of smart glasses, artificial retina products, and the like, the image acquisition device is provided in the present application in order to solve the technical problem.
Specifically, the camera is an analog camera with a CVBS interface, the camera acquires an image to generate a CVBS analog signal, the CVBS analog signal may be a PAL (Phase alternation Line, Phase alternating Line) System signal (with a resolution of 720 × 576, 25 frames), or an NTSC (National Television System Committee ) System (with a resolution of 720 × 480, 30 frames), and the camera transmits the acquired CVBS analog signal to the image sensor. The CVBS analog signal is transmitted in two passes of one frame of image, the first pass being all odd (even) lines and the second pass being even (odd) lines, and then the loop.
The image sensor is used for processing a CVBS analog signal into a digital image signal, the CVBS analog signal including a composite video signal (composite video signal), a VSYNC signal (vertical synchronization signal), a FID signal (time domain function signal) and a VBLK signal, the traditional STM singlechip can not receive FID signals and VBLK signals, high and low levels in the FID signals are used for identifying odd lines and even lines in CVBS analog signals, the CVBS analog signal is necessary to be recognized normally, so that the FID signal must be transmitted to the STM single chip microcomputer, to solve this problem, the present application adapts the image sensor accordingly, specifically, correspondingly configuring corresponding registers of the image sensor, fusing the FID signal into the VSYNC signal, so as to give STM singlechip with the FID signal transmission for the STM singlechip is according to VSYNC signal to discern odd number row data and even number row data. In one example, the image sensor is an ADV7182 type image sensor.
And the STM singlechip receives the digital image signal converted by the image sensor. Because the digital image signal is converted by the image sensor into the CVBS analog signal, and the CVBS analog signal is the signal transmitted in an interlaced way, the converted digital image signal is the signal transmitted in an interlaced way, while the STM singlechip can only process the progressive signal for display, and the interlaced digital image signal is processed in a progressive way for subsequent display by the STM singlechip. In one example, the STM singlechip is an STM32 type singlechip.
When the STM singlechip is receiving the digital image signal, the VSYNC signal in the discernment digital image signal, because it has the FID signal to fuse in the VSYNC signal, consequently, the VSYNC signal possesses the functional role of FID signal, and is specific, when the STM singlechip discerned the first level in the VSYNC signal, gather the first type data in the digital image signal, and with first type data cache in first buffer memory, when discerning the second level in the VSYNC signal, gather the second type data in the digital image signal, and with second type data cache in the second buffer memory. The second level is one of a high level and a low level, and the first level and the second level are different from each other, in one example, the first level is a high level, and the second level is a low level, and in another example, the first level is a low level, and the second level is a high level. The first type of data and the second type of data are one of odd field data and even field data, and the first type of data and the second type of data are different from each other.
After the STM single chip microcomputer acquires the digital image signals, if the digital image signals need to be displayed, the digital image signals need to be subjected to interlaced-to-progressive conversion, and specifically, the STM single chip microcomputer is also used for acquiring display data from the first type of data and the second type of data in a circulating and alternating manner when the display data are output; the display data acquired each time is one line of data in the first type of data or the second type of data, for example, one line of data is acquired in the first type of data first, then one line of data is acquired in the second type of data, and the cycle is performed sequentially, or one line of data is acquired in the second type of data first, then one line of data is acquired in the first type of data, and the cycle is performed sequentially, so that the interlaced conversion into the progressive conversion is realized.
In order to accelerate the data processing rate and reduce the workload of the STM singlechip, the STM singlechip needs to amplify the data to reduce floating point operations in the data, and in one example, the STM singlechip is further configured to amplify the digital image signal before format conversion by 256 times and reduce the digital image signal after format conversion by 256 times when converting the digital image signal from YUV format to RGB format.
Specifically, the conventional YUV to RGB formula is:
R = 1.164 *(Y - 16) + 1.596 *(Cr - 128);
G = 1.164 *(Y - 16) - 0.392 *(Cb - 128) - 0.812 *(Cr - 128);
B = 1.164 *(Y - 16) + 2.016 *(Cb - 128);
the formula has floating point operation, which seriously affects the performance of the STM singlechip, and the factor frame has 720 × 576 effective pixels by taking the resolution of 720 × 576 as an example, so the calculation amount according to the formula is huge and time is consumed.
The application carries out integral amplification on data by 256 times, and then the integral amplification factor is restored by shifting right by 8 bits, so that the acceleration is realized by a method for converting floating point operation into integer operation, and the formula is as follows:
r1 = (298*(Y-16) + 409*(Cr-128) + 128)>>8;
g1 = (298*(Y-16) - 100*(Cb-128) - 208*(Cr-128) + 128)>>8;
b1 = (298*(Y-16) + 516*(Cb-128) + 128)>>8;
further optimization of b1 in the above formula may be modified as follows:
b1 = (298*(Y-16) + ((Cb-128)<<9)+(( (Cb-128)<<2)) + 128)>>8;
in each embodiment of the image acquisition equipment, the STM single chip microcomputer, the image sensor and the camera are arranged; the STM single chip microcomputer is connected with the image sensor through a DCMI interface and an IIC interface respectively; the image sensor is connected with the camera through a CVBS interface; the camera is used for acquiring a CVBS analog signal and transmitting the CVBS analog signal to the image sensor; the image sensor is used for converting the CVBS analog signal into a digital image signal and transmitting the digital image signal to the STM singlechip; a FID signal is fused in a VSYNC signal of the digital image signal; the STM single chip microcomputer is used for acquiring first type data in the digital image signals when the VSYNC signals are at a first level and caching the first type data in a first cache region; the STM singlechip is used for when the VSYNC signal is the second level, gather the second type data in the digital image signal, and with second type data buffer in the second buffer memory district, realized that the STM singlechip can connect the camera of CVBS type, thereby utilize the characteristic that the CVBS analog signal can long distance transmission, realize the separation of STM singlechip and camera long distance, and the image acquisition equipment simple structure of this application, be favorable to reducing manufacturing cost and be favorable to the miniaturization.
In one embodiment, as shown in fig. 2, there is provided an artificial retina extracorporeal device comprising the above-described image capture device 10; further comprises a data transmission device 21;
the data transmission equipment 1 is connected with an STM singlechip 11 of the image acquisition equipment 10;
the image data transmission device 10 is used to transmit image data to an in vivo retina chip.
It should be noted that the image capturing device in this embodiment is the same as the image capturing device described in the embodiments of the image capturing device in this application, and please refer to the description of the embodiments of the image capturing device in this application in detail, which is not described herein again. In particular, in practical application, the camera in the artificial retina external device is mounted on the frame of the glasses, and is provided for the user to wear.
The data transmission equipment is used for transmitting the image data acquired from the image acquisition equipment to the in-vivo retina chip, and specifically adopts a wireless transmission mode to transmit the image data to the in-vivo retina chip. The retina chip in the human body is implanted in the human body to transmit current signals to the optic nerves so as to stimulate the optic nerves and lead the brain to generate vision.
In one example, as shown in fig. 3, the image data transmission device 21 includes a radio frequency signal transceiving chip 211, a first matching circuit 213, and a data coil 215;
the radio frequency signal transceiver chip 211 is connected with the STM singlechip 11; the first matching circuit 213 is connected between the radio frequency signal transceiver chip 211 and the data coil 215.
It should be noted that the radio frequency signal transceiver chip is used to modulate the image data to meet the radio frequency transmission requirement. In one example, the radio frequency signal transceiver chip is a TRF7970A type chip.
The first matching circuit is used for amplifying, impedance matching and filtering the image data modulated by the radio frequency signal transceiving chip.
The data coil is used for sending out the image data processed by the first matching circuit in the form of electromagnetic waves.
In one embodiment, as shown in fig. 4, the artificial retina extracorporeal device further comprises an energy transmission device 41 and a power supply device 43;
the power supply device 43 is respectively connected with the energy transmission device 41 and the STM singlechip 11 of the image acquisition device 10;
wherein the energy transmission device 41 is adapted to transmit energy to the retina chip in vivo.
It is noted that the energy transmission device is used for transmitting energy to the retina chip in vivo, and in one example, as shown in fig. 5, the energy transmission device 41 includes a radio frequency power amplifier 411, a second matching circuit 413, and an energy coil 415;
the radio frequency power amplifier 411 is connected with the power supply device 43; a second matching circuit 413 is connected between the radio frequency power amplifier 411 and the energy coil 415.
It should be noted that the radio frequency power amplifier is used for obtaining electric energy from the power supply device, performing direct current voltage amplification to convert the electric energy into alternating current voltage suitable for radio frequency transmission, so that sufficient radio frequency power can be obtained and then the alternating current voltage can be radiated through the energy coil. In one example, the radio frequency power amplifier is a class E radio frequency power amplifier.
The second matching circuit is used for providing impedance matching between the radio frequency power amplifier and the rear-stage load energy coil and filtering noise waves.
The energy coil is used for carrying out radio frequency radiation on the energy output by the radio frequency power amplifier.
The power supply device is used for supplying power to the energy transmission device and the image acquisition device, and in one example, as shown in fig. 6, the power supply device 43 includes a battery 431 and a DC/DC power supply 433; the DC/DC power supply 431 is connected to the battery 433 and the rf power amplifier 411, respectively.
It should be noted that the battery supplies power to the artificial retina extracorporeal device, which is an energy source of the whole device. (ii) a The DC/DC power supply is used for converting the voltage of the battery into the voltage required by each part circuit of the artificial retina extracorporeal device.
Furthermore, the artificial retina extracorporeal device also comprises a memory and a flash memory which are connected with the STM single chip microcomputer, wherein the memory is used for temporarily storing the operation data of the STM single chip microcomputer and exchanging data with the flash memory. Flash memory is used to store system software configurations, software logs, and the like.
In each embodiment of this application artificial retina external equipment, adopt the mode of camera and singlechip separation, alleviateed the weight in the glasses, improved the comfort level that the user wore glasses, in addition, the whole scheme is succinct, and whole consumption is about 3W, can use the less lithium cell of capacity as the battery of continuing a journey, thereby reduce the volume of lithium cell, make external wearing equipment possible more small and exquisite, improve the portability that blind person friend dressed external equipment.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An image acquisition device is characterized by comprising an STM single chip microcomputer, an image sensor and a camera;
the STM single chip microcomputer is connected with the image sensor through a DCMI interface and an IIC interface respectively; the image sensor is connected with the camera through a CVBS interface;
the camera is used for collecting a CVBS analog signal and transmitting the CVBS analog signal to the image sensor; the image sensor is used for converting the CVBS analog signal into a digital image signal and transmitting the digital image signal to the STM singlechip; a FID signal is fused in a VSYNC signal of the digital image signal;
the STM single chip microcomputer is used for collecting first type data in the digital image signals when the VSYNC signals are at a first level and caching the first type data in a first cache region; the STM single chip microcomputer is used for collecting second type data in the digital image signals when the VSYNC signals are at a second level and caching the second type data in a second cache region;
the first level and the second level are both one of a high level and a low level, and the first level and the second level are different from each other; the first type data and the second type data are one of odd field data and even field data, and the first type data and the second type data are different from each other.
2. The image acquisition device according to claim 1, wherein the STM single chip microcomputer is further configured to cyclically and alternately acquire the display data from the first type of data and the second type of data when outputting the display data; and the display data acquired each time is a line of data in the first type of data or the second type of data.
3. The image acquisition device of claim 2, wherein the STM single chip microcomputer is further configured to, when converting the digital image signal from YUV format to RGB format, amplify the digital image signal before format conversion by 256 times and reduce the digital image signal after format conversion by 256 times.
4. The image acquisition device according to any one of claims 1 to 3, wherein the STM single chip microcomputer is an STM32 type single chip microcomputer; the image sensor is an ADV7182 type image sensor.
5. An artificial retina extracorporeal device, characterized by comprising the image capture device of any one of claims 1 to 4; the system also comprises data transmission equipment;
the data transmission equipment is connected with an STM single chip microcomputer of the image acquisition equipment;
wherein the image data transmission device is used for transmitting image data to the in vivo retina chip.
6. The artificial retina extracorporeal device of claim 5, wherein the image data transmission device comprises a radio frequency signal transceiver chip, a first matching circuit, and a data coil;
the radio frequency signal transceiving chip is connected with the STM single chip microcomputer; the first matching circuit is connected between the radio frequency signal transceiving chip and the data coil.
7. The artificial retina extracorporeal device of claim 6, wherein the radio frequency signal transceiver chip is a TRF7970A type chip.
8. The artificial retina extracorporeal device of claim 5, further comprising an energy transmission device and a power supply device;
the power supply equipment is respectively connected with the energy transmission equipment and the STM singlechip of the image acquisition equipment;
wherein the energy transmission device is used for transmitting energy to the retina chip in vivo.
9. The artificial retina extracorporeal device of claim 8, wherein the energy transfer device includes a radio frequency power amplifier, a second matching circuit, and an energy coil;
the radio frequency power amplifier is connected with the power supply equipment; the second matching circuit is connected between the radio frequency power amplifier and the energy coil.
10. The artificial retina extracorporeal device of claim 9, wherein the power device comprises a battery and a DC/DC power source;
the DC/DC power supply is respectively connected with the battery and the radio frequency power amplifier.
CN202010186791.7A 2020-03-17 2020-03-17 Image acquisition device and artificial retina in-vitro device Pending CN111064880A (en)

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Application publication date: 20200424