CN108919091A - A kind of seasoned liter of screen system of video AD C device - Google Patents
A kind of seasoned liter of screen system of video AD C device Download PDFInfo
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- CN108919091A CN108919091A CN201810638682.7A CN201810638682A CN108919091A CN 108919091 A CN108919091 A CN 108919091A CN 201810638682 A CN201810638682 A CN 201810638682A CN 108919091 A CN108919091 A CN 108919091A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2855—Environmental, reliability or burn-in testing
- G01R31/2872—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation
- G01R31/2874—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation related to temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2855—Environmental, reliability or burn-in testing
- G01R31/2872—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation
- G01R31/2879—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation related to electrical aspects, e.g. to voltage or current supply or stimuli or to electrical loads
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2855—Environmental, reliability or burn-in testing
- G01R31/2872—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation
- G01R31/2881—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation related to environmental aspects other than temperature, e.g. humidity or vibrations
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- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The present invention relates to a kind of seasoned liter of screen systems for video AD C device.The system can obtain multi-disc video AD C device system under application circumstances, the data exported under different working condition, while monitor the operating temperature and electric current of every ADC device, and each video AD C device performance is evaluated and screened for the later period.Its primary structure includes：Flying-spot video generator in experimental situation and seasoned experimental plate are set, power supply, interface conversion plate and host computer outside experimental situation are set；Seasoned experimental plate includes power management module, N number of video AD C device detection unit, the first fpga chip, the first data interface chip and instruction interface chip；Video AD C device detection unit includes pcb board and the current monitoring chip being mounted on pcb board, AD7490 chip, ADC crimping seat and thermometric chip.
Description
Technical field
The present invention relates to a kind of seasoned liter of screen systems for video AD C device.
Background technique
Video AD C device is the important devices in imaging system, play the role of be by analog video signal digital quantization
Acquisition and the analysis processing of subsequent image data provide the foundation.The quality of video AD C device and reliability, the stabilization of work
Property to evaluation imaging system performance play an important role.
The failure of general electronic component mainly go out new device begin to use for the previous period and close to service life
Two periods on.And under certain application circumstances (such as high temperature, severe cold, vacuum, radiation), to electronic component
Reliability and stability have particular/special requirement, need to carry out prolonged life test in the operating condition to component before installation
With the seasoned screening of certain time length.
Summary of the invention
In order to solve the problems, such as that background technique, the present invention devise a kind of seasoned liter sieve system of video AD C device
System, can obtain multi-disc video AD C device system in application circumstances (such as high temperature, severe cold, vacuum, radiation by the system
Deng) under, the data exported under different working condition, while the operating temperature and electric current of every ADC device are monitored, it is used for the later period pair
Each video AD C device performance is evaluated and is screened.
Basic principle of the invention is：
Seasoned liter of screen system of ADC device provided by the invention, wherein seasoned experimental situation can be as needed it is high and low
Near incubator, vacuum tank, radiation source etc..Whole system is divided into the part in experimental situation and the part outside experimental situation.Experiment
Flying-spot video generator and seasoned breakboard construction are set in environment, realize the normal work of every video AD C device.Experiment
D.C. regulated power supply, interface conversion plate and host computer are set outside environment；D.C. regulated power supply provides whole system work and needs
The voltage wanted；Special interface needed for experimental situation is converted to and is connect convenient for the Cameralink of host computer acquisition by interface conversion plate
Mouth and serial line interface；Host computer PC realizes the acquisition of data and issuing for control instruction.
The specific technical solution of the present invention is：
The present invention provides a kind of seasoned liter of screen systems of video AD C device, including the video being arranged in experimental situation
Power supply, interface conversion plate and host computer outside experimental situation is arranged in signal generator and seasoned experimental plate；
Seasoned experimental plate includes power management module, N number of video AD C device detection unit, the first fpga chip, the first number
According to interface chip and instruction interface chip；Wherein N >=1；
Video AD C device detection unit includes pcb board and the current monitoring chip being mounted on pcb board, AD7490 core
Piece, ADC crimping seat and thermometric chip；
Video AD C device to be detected is installed on ADC crimping seat；
Thermometric chip mounting location is close to video AD C device to be detected, and by the temperature of the video AD C device to be detected of measurement
Angle value is transmitted to the first fpga chip；
Current monitoring chip input terminal is connected to power supply by power management module, and current monitoring chip output end passes through
AD7490 chip converts current signal to after specific value and is transmitted to the first fpga chip；
Flying-spot video generator generates and sends the video analog signal suitable for ADC device to be measured；
First fpga chip passes sequentially through the first data interface chip, interface conversion plate and sends video to be detected to host computer
The data of ADC device；
Host computer passes sequentially through interface conversion plate, instruction interface chip is sent instructions to after the first fpga chip to be checked
Video AD C device is surveyed to be controlled；
Meanwhile host computer acquisition passes sequentially through the first fpga chip, the first data interface chip, interface conversion plate and sends
Data, and data are analyzed and are shown.
Further, the program module of above-mentioned first fpga chip internal operation includes Clock management module, the spelling of N number of data
Connection module, data repeating query module, output timing module and serial ports instruction parsing execution module；
Clock management module is used to receive the clock signal of external crystal-controlled oscillation and generates the more of the first fpga chip need of work
Kind clock signal；
N number of data splicing module and N number of video AD C device detection unit correspond, for receiving N number of video
Video data, temperature data and the current data that ADC device detection unit is sent, and by real-time temperature data and electric current number
A data packet is formed before every one-frame video data according to splicing；
Data repeating query module receives the data packet of N number of data splicing module by the way of recycling in turn, the same time
It only receives the data packet of a data splicing module and is sent to output timing module, abandon other N-1 data splicing module
Data packet；
What output timing module was used to require the data packet that data repeating query module exports according to the first data interface chip
Sequential export；
Serial ports instruction parsing execution module is used to analyze the instruction the director data that interface chip is sent, and will by instruction requirement
Multiple video AD C devices to be detected are configured to different operating modes.
Further, above-mentioned interface conversion plate includes the second fpga chip, the second data interface chip and instruction interface
Chip；
The program module of second fpga chip internal operation includes Clock management module, receives tfi module, serial ports instruction
Parse and issue module, data buffering module and Cameralink tfi module；
Clock management module is used to receive the clock signal of external crystal-controlled oscillation and generates the more of the second fpga chip need of work
Kind clock signal；
Receive data packet that tfi module is sent for seasoned experimental plate according to the second data interface chip requirement when
Sequence is exported to data buffering module；
The control instruction of host computer passes sequentially through Cameralink tfi module, serial ports instruction parsing and issues root after module
Seasoned experimental plate is sent to according to instruction interface chip.
Further, above-mentioned first data interface chip includes LVDS interface chip and high-speed serial data addressable port core
Piece matches therewith, output timing module include the LVDS output timing module being connect with LVDS interface chip and with high speed
The coding chip tfi module of serial data coding chip connection；
Second data interface chip includes LVDS interface chip and high-speed serial data decoding interface chip, is matched therewith
, it receives tfi module and includes the LVDS input timing module connecting with LVDS interface chip and decoded with high-speed serial data
The decoding chip tfi module of chip connection.
Further, above-metioned instruction interface chip is RS485 serial port chip.
Further, above-mentioned current monitoring chip is two groups of INA214-Q1 chips, is respectively used to receive what power supply provided
1.8V and 3.3V voltage.
Further, above-mentioned experimental situation be high/low temperature environment, vacuum environment and radiation environment in it is any or
Multiple combinations.
The beneficial effects of the invention are as follows：
The present invention is voluntarily established carries out the seasoned of ADC device with a set of under the experimental situations such as high/low temperature or vacuum or radiation
Screen system is risen, using placing seasoned experimental plate and flying-spot video generator under experimental situation, outside the experimental situation in setting
The N number of video AD C device detection unit being arranged on seasoned experimental plate is guaranteed that it works normally while supervising in experimental situation by position machine
The operating temperature and electric current (each video AD C device working condition is changeable) of each video AD C device are controlled, and passes through host computer
Acquire the data that each video AD C device exports under different working condition, for the later period to each video AD C device performance into
Row evaluation and screening.
Detailed description of the invention
Fig. 1 is the composition schematic diagram of present system；
Fig. 2 a is the analog signal for being used to sample holding that flying-spot video generator generates；
Fig. 2 b is the analog signal for correlated-double-sampling that flying-spot video generator generates；
Fig. 3 is the structure principle chart of seasoned experimental plate；
Fig. 4 is the structure principle chart of interface conversion plate；
Fig. 5 is the image display interfaces of host computer；
Fig. 6 is the control interface of host computer.
Specific embodiment
It is said in detail below by conjunction with seasoned liter screen system of the attached drawing to video AD C device provided by the invention
It is bright：
As shown in Figure 1, all devices of the seasoned liter of screen system kind are respectively provided in two kinds of environment, one is experimental situations
(experimental situation as needed can be high and low temperature, vacuum tank, near radiation source, and another kind is external environment)；
Its specific structure is laid out：
The system includes the flying-spot video generator being arranged in experimental situation and seasoned experimental plate, is arranged in experimental situation
Outer power supply, interface conversion plate and host computer；
Seasoned experimental plate includes power management module, N number of video AD C device detection unit, the first fpga chip, the first number
According to interface chip and instruction interface chip；Wherein N >=1；
Video AD C device detection unit includes pcb board and the current monitoring chip being mounted on pcb board, AD7490 core
Piece, ADC crimping seat and thermometric chip；
Video AD C device to be detected is installed on ADC crimping seat；
Thermometric chip mounting location is close to video AD C device to be detected, and by the temperature of the video AD C device to be detected of measurement
Angle value transmits first to fpga chip；
Current monitoring chip input terminal is connected to power supply by power management module, and current monitoring chip output end passes through
AD7490 chip is connect with the first fpga chip；
Flying-spot video generator generates and sends the video analog signal suitable for ADC device to be measured；
First fpga chip passes sequentially through the first data interface chip, interface conversion plate and sends video to be detected to host computer
The data of ADC device；
Host computer passes sequentially through interface conversion plate, instruction interface chip is sent instructions to after the first fpga chip to be checked
Video AD C device is surveyed to be controlled；
Meanwhile host computer acquisition passes sequentially through the first fpga chip, the first data interface chip, interface conversion plate and sends
Data, and data are analyzed and are shown.
The concrete condition of each device is illustrated below：
1, flying-spot video generator
Flying-spot video generator generates the video analog signal for being suitable for ADC device simulation entrance to be detected, can be use
The analog signal of (SHA, sampling location absolute amplitude are signal amplitude) is kept in sampling, is also possible to for correlated-double-sampling
The analog signal of (difference of CDS, sampling location a point and b point amplitude is signal amplitude), as shown in figures 2 a and 2b.
2, seasoned experimental plate
The composed structure of seasoned experimental plate is as shown in Figure 3.Seasoned experimental plate using the first fpga chip as core processing device,
The video data of N number of video AD C device output to be detected is received, and is exported in a manner of repeating query by data-interface.Seasoned reality
Onboard temperature, electric current when testing plate while monitoring the work of each video AD C device to be detected, and by temperature and the data of electric current with
Image data output.
(1) video AD C test cell
It is that each video AD C device to be detected devises a video AD C test cell, each video on seasoned experimental plate
ADC test cell is made of video AD C crimping seat, thermometric chip and current monitoring chip.Major function is as follows.
A, ADC crimping seat connects for realizing each pin of video AD C device to be detected with the electric appliance of pcb board, while just
It is tested in the different device of the handling and replacement of ADC device.
B, thermometric chip model ADT7310 is placed close to video AD C device, onboard when ADC device works for measuring
Temperature, and measurement temperature value is transferred to fpga chip.
C, current monitoring chip INA214-Q1 is serially connected in the supply voltage 1.8V and 3.3V of video AD C, and ADC is powered
Electric current is converted into voltage signal, and the first fpga chip is transferred to after the quantization by AD7490.
(2) first fpga chips
First fpga chip is the core processing device of seasoned experimental plate, realizes adopting for the data such as video, temperature and electric current
The control function of collection and video AD C device.The program module run thereon includes：Clock management module, N number of data splice mould
Block, data repeating query module, output timing module and serial ports instruction parsing execution module；
Wherein, output timing module includes LVDS output timing module and coding chip tfi module；
The major function of each program module is as follows：
A, N number of data splicing module is respectively used to receive video data, the temperature that N number of video AD C device detection unit is sent
Degree evidence and current data, and real-time temperature data and current data splicing are formed one before every one-frame video data
Data packet is transferred to data repeating query module.
B, data repeating query modular concurrent receives the data packet that N number of data splicing module is sent, since data volume is more than very much greatly
The bandwidth of output interface, so the circulation in turn that repeating query module realizes N number of data splicing module data receives, the same time
It only receives the data packet of a data splicing module and is sent to output interface, abandon the number of other N-1 data splicing module
According to packet.In addition, receive the data packet of N number of data splicing module in turn, and 1~N number of data splicing module between recycle, thus
Realize the monitoring to N number of video AD C device video data, temperature data and current data to be detected.
C, LVDS output timing module and coding chip tfi module are for pressing the data packet that data repeating query module exports
The sequential export required according to data interface chip.
D, Clock management module is used to receive the clock signal of external crystal-controlled oscillation and generates the first fpga chip need of work
Multiple clock signal.
E, serial ports instruction parsing and execution module are used to parse the instruction that host computer is sent, and will be to be detected by instruction requirement
Video AD C device is configured to different operating modes, to realize the function to video AD C device to be detected under different working condition
It can be with the test of performance.
(3) first data interface chips and instruction interface chip
First data interface chip includes LVDS interface chip and high-speed serial data addressable port, can be in system test
According to actual tests environment flexible choice.Command reception interface is RS485 serial line interface.
A, LVDS interface chip realizes the transmission of test data packet, has simple timing, flexible operation and convenient for customizing
Advantage, but it is relatively more to be needed signal wire.
B, high-speed serial data addressable port equally realizes the transmission of test data packet, has only used individual signals line,
In certain particular surroundings test tanks, for the isolation of guarantee test environment and external environment, the same of individual signals line is mostly used
For axis as storehouse cable is worn, high-speed serial data addressable port adapts to the use under this experimental enviroment.
C, RS485 interface chip realizes the reception that host computer issues control instruction.
3, interface conversion plate
The composite structural diagram of interface conversion plate is as shown in Figure 4.Interface conversion plate is main negative using the second fpga chip as core
Interface conversion when data communication between host computer machine and seasoned experimental plate is blamed, the data-interface of seasoned experimental plate and control are connect
Mouth is converted into the Cameralink interface for being easy to host computer acquisition and control.
(1) second data interface chip and instruction interface chip
Second data interface chip includes LVDS interface chip and high-speed serial data decoding interface chip, in system test
The interface for matching seasoned breadboard is selected.Instruction transmission interface is RS485 serial line interface.
A, LVDS interface chip realizes from seasoned experimental plate and receives test data packet.
B, high-speed serial data decoding interface chip equally realizes from seasoned experimental plate and receives test data.
C, the control instruction that RS485 interface chip issues host computer is transmitted to seasoned experimental plate.
(2) second fpga chips
Second fpga chip is the core devices of interface conversion plate, receives the data that seasoned experimental plate is sent and is delayed
Then punching sends the data to host computer by Cameralink tfi module, while the control instruction that host computer is sent turns
Issue seasoned experimental plate.The program module run thereon includes：Clock management module, receive tfi module, data buffering module,
Instruction parsing issues module and Cameralink tfi module；
Wherein, receiving tfi module includes that LVDS receives tfi module and decoding chip tfi module；
The major function of each program module is as follows：
A, LVDS receives tfi module and decoding chip tfi module is used to receive the data of seasoned experimental plate output.
B, data buffering module is for caching from the received data of seasoned experimental plate.
C, Clock management module is used to receive the clock signal of external crystal-controlled oscillation and generates the second fpga chip need of work
Multiple clock signal.
D, instruction parsing issues module for parsing the instruction that host computer is sent, and is handed down to seasoned experimental plate.
E, Cameralink tfi module is used to send data to host computer and receives control instruction from host computer.
4, host computer
Host computer mainly has the functions such as data acquisition, analysis and real-time display, and instruction transmission, has good figure
Corresponding operating is done convenient for testing crew in shape interface.
Fig. 5 is the image display interfaces of host computer, the video data of each video AD C device of real-time display.
Fig. 6 is the control interface of host computer, for show the temperature of each video AD C device, 1.8V supply current and
3.3V supply current, while for showing working condition (normal/abnormal) and every road vision signal per a piece of video AD C
Mean value, noise and signal-to-noise ratio.In addition, control interface can also configure video AD C in different working conditions, video is realized
Configuration, CDS gain configuration and the VGA gain configuration of any register of ADC device.
Claims (7)
1. a kind of seasoned liter of screen system of video AD C device, it is characterised in that：
Including the flying-spot video generator and seasoned experimental plate being arranged in experimental situation, be arranged in power supply outside experimental situation,
Interface conversion plate and host computer；
Seasoned experimental plate includes that power management module, N number of video AD C device detection unit, the first fpga chip, the first data connect
Mouth chip and instruction interface chip；Wherein N >=1；
Video AD C device detection unit include pcb board and the current monitoring chip being mounted on pcb board, AD7490 chip,
ADC crimping seat and thermometric chip；
Video AD C device to be detected is installed on ADC crimping seat；
Thermometric chip mounting location is close to video AD C device to be detected, and by the temperature value of the video AD C device to be detected of measurement
It is transmitted to the first fpga chip；
Current monitoring chip input terminal is connected to power supply by power management module, and current monitoring chip output end passes through AD7490
Chip converts current signal to after specific value and is transmitted to the first fpga chip；
Flying-spot video generator generates and sends the video analog signal suitable for ADC device to be measured；
First fpga chip passes sequentially through the first data interface chip, interface conversion plate and sends video AD C to be detected to host computer
The data of device；
Host computer passes sequentially through interface conversion plate, instruction interface chip is sent instructions to after the first fpga chip to view to be detected
Frequency ADC device is controlled；
Meanwhile host computer acquisition passes sequentially through the number that the first fpga chip, the first data interface chip, interface conversion plate are sent
According to, and data are analyzed and shown.
2. seasoned liter of screen system of video AD C device according to claim 1, it is characterised in that：The first FPGA core
The program module of piece internal operation includes Clock management module, N number of data splicing module, data repeating query module, output timing mould
Block and serial ports instruction parsing execution module；
Clock management module be used for receive external crystal-controlled oscillation clock signal and generate the first fpga chip need of work it is a variety of when
Clock signal；
N number of data splicing module and N number of video AD C device detection unit correspond, for receiving N number of video AD C device
Video data, temperature data and the current data that part test cell is sent, and real-time temperature data and current data are spelled
Connect one data packet of composition before every one-frame video data；
Data repeating query module receives the data packet of N number of data splicing module by the way of recycling in turn, and the same time only connects
It receives the data packet of a data splicing module and is sent to output timing module, abandon the number of other N-1 data splicing module
According to packet；
Output timing module is used for the timing for requiring the data packet that data repeating query module exports according to the first data interface chip
Output；
Serial ports instruction parsing execution module is used to analyze the instruction the director data that interface chip is sent, and will be multiple by instruction requirement
Video AD C device to be detected is configured to different operating modes.
3. seasoned liter of screen system of video AD C device according to claim 2, it is characterised in that：The interface conversion plate
Including the second fpga chip, the second data interface chip and instruction interface chip；
The program module of second fpga chip internal operation includes Clock management module, receives tfi module, serial ports instruction parsing
With issue module, data buffering module and Cameralink tfi module；
Clock management module be used for receive external crystal-controlled oscillation clock signal and generate the second fpga chip need of work it is a variety of when
Clock signal；
It is defeated according to the timing of the second data interface chip requirement to receive the data packet that tfi module is sent for seasoned experimental plate
Out to data buffering module；
The control instruction of host computer passes sequentially through Cameralink tfi module, serial ports instructs after parsing and issuing module according to finger
Interface chip is enabled to be sent to seasoned experimental plate.
4. seasoned liter of screen system of video AD C device according to claim 3, it is characterised in that：First data connect
Mouth chip includes LVDS interface chip and high-speed serial data addressable port chip, is matched therewith, output timing module includes
The LVDS output timing module being connect with LVDS interface chip and the coding chip being connect with high-speed serial data coding chip
Tfi module；
Second data interface chip includes LVDS interface chip and high-speed serial data decoding interface chip, matches therewith, connects
Receive tfi module include the LVDS input timing module being connect with LVDS interface chip and with high-speed serial data decoding chip
The decoding chip tfi module of connection.
5. seasoned liter of screen system of video AD C device according to claim 4, it is characterised in that：Described instruction interface core
Piece is RS485 serial port chip.
6. seasoned liter of screen system of video AD C device according to claim 5, it is characterised in that：The current monitoring core
Piece is two groups of INA214-Q1 chips, is respectively used to receive 1.8V the and 3.3V voltage that power supply provides.
7. seasoned liter of screen system of video AD C device according to claim 5, it is characterised in that：The experimental situation is
Any or multiple combinations in high/low temperature environment, vacuum environment and radiation environment.
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| CN110726926A (en) * | 2019-10-21 | 2020-01-24 | 深圳市凯迪仕智能科技有限公司 | Intelligent door lock mainboard PCBA aging test method |
| CN113347412A (en) * | 2021-06-04 | 2021-09-03 | 合肥市华达半导体有限公司 | Multimode detection device for converting DP (digital processing) to HDMI (high-definition multimedia interface) chip |
| CN113905227A (en) * | 2021-10-18 | 2022-01-07 | 中国科学院长春光学精密机械与物理研究所 | Video processing chip aging device and method based on daisy chain |
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| CN113347412A (en) * | 2021-06-04 | 2021-09-03 | 合肥市华达半导体有限公司 | Multimode detection device for converting DP (digital processing) to HDMI (high-definition multimedia interface) chip |
| CN113905227A (en) * | 2021-10-18 | 2022-01-07 | 中国科学院长春光学精密机械与物理研究所 | Video processing chip aging device and method based on daisy chain |
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