CN106383305A - Printed circuit board testing method, printed circuit board testing device and testing tool - Google Patents
Printed circuit board testing method, printed circuit board testing device and testing tool Download PDFInfo
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- CN106383305A CN106383305A CN201610959189.6A CN201610959189A CN106383305A CN 106383305 A CN106383305 A CN 106383305A CN 201610959189 A CN201610959189 A CN 201610959189A CN 106383305 A CN106383305 A CN 106383305A
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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
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
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Abstract
The invention discloses a printed circuit board testing method, a printed circuit board testing device and a testing tool. The printed circuit board testing method comprises the steps of acquiring color data which are acquired by a color sensor from a display image of a display screen; and confirming a display control function testing result of the tested printed circuit board according to the color data. According to the printed circuit board testing method, an existing printed circuit board testing solution can be optimized, thereby setting a technical problem of low testing efficiency caused by artificial determination and manual operation.
Description
Technical field
The present embodiments relate to board technical field of measurement and test, more particularly, to a kind of method and apparatus of test board and survey
Trial work fills.
Background technology
Board is a kind of printed circuit board, is arranged in electronic product, for controlling the operation of hardware, such as controls display
Screen is shown.
Board, before dispatching from the factory, needs board test fixture that the function of board is tested.Wherein, to control display screen
When presentation control function is tested, need test fixture to pass through communication interface and send a trigger to tested board, should
Trigger includes triggering the instruction of tested board control display screen display image, and tested board is according to trigger to display
Screen sends a display signal, comprises specific idsplay order so that display screen can be according to idsplay order in this display signal
Show corresponding image.Whether the image being shown by artificial judgment is correct, and just pressed on test fixture according to judged result
Often key or abnormal key, so that test fixture master control borad determines whether the presentation control function of tested board is normal.Traditional test
Need artificial judgment in method and manually operate so that testing efficiency is very low, also can expend substantial amounts of manpower simultaneously.
Content of the invention
In view of this, the embodiment of the present invention provides a kind of method and apparatus of test board and test fixture, existing to optimize
There is board testing scheme, solve artificial judgment and artificial operation makes the low technical problem of testing efficiency.
In a first aspect, embodiments providing a kind of method of test board, including：
Obtain the color data of the display image collection from display screen for the color sensor；
Confirm the test result of the presentation control function of tested board according to described color data.
Second aspect, the embodiment of the present invention additionally provides a kind of device of test board, including：
Data acquisition module, for obtaining the color data of the display image collection from display screen for the color sensor；
Results verification module, for confirming the test knot of the presentation control function of tested board according to described color data
Really.
The third aspect, the embodiment of the present invention additionally provides a kind of test fixture, the method for executing first aspect offer,
It includes：Master control borad, display screen, color sensor, communication interface and display screen interface, wherein, described master control borad respectively with
Described communication interface and described color sensor connect, and described display screen is connected with display screen interface, and described color sensor sets
It is placed in the display surface of described display screen；
Described communication interface, for carrying out data interaction with tested board；
Described color sensor, for gathering the color data that display screen shows, and sends to described master control borad；
Described master control borad, for sending trigger by described communication interface to tested board, is additionally operable to according to described
Color data confirms the test result of the presentation control function of tested board；
Described display screen interface, for receiving the display signal that tested board generates according to described trigger, and sends
To display screen；
Described display screen, for being shown according to described display signal.
The method and apparatus of test board provided in an embodiment of the present invention and test fixture, by color sensor from display
Screen display image in gather color data, and according to this color data confirm tested board presentation control function whether just
Often, so that board test more automates, intelligent.In addition, need not by manual detection exact p-value result it is also possible to
Save manpower, improve testing efficiency and test accuracy rate simultaneously.
Brief description
By reading the detailed description that non-limiting example is made made with reference to the following drawings, other of the present invention
Feature, objects and advantages will become more apparent upon：
A kind of flow chart of the method for test board that Fig. 1 provides for the embodiment of the present invention one；
A kind of flow chart of the method for test board that Fig. 2 a provides for the embodiment of the present invention two；
A kind of schematic diagram of display screen display image that Fig. 2 b provides for the embodiment of the present invention two；
A kind of flow chart of the method for test board that Fig. 2 c provides for the embodiment of the present invention two；
A kind of structural representation of the device of test board that Fig. 3 provides for the embodiment of the present invention three；
A kind of structural representation of test fixture that Fig. 4 provides for the embodiment of the present invention four；
A kind of structural representation of board testing system that Fig. 5 provides for the embodiment of the present invention four.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than full content is illustrate only in description, accompanying drawing.
Embodiment one
A kind of flow chart of the method for test board that Fig. 1 provides for the embodiment of the present invention one.The side that the present embodiment provides
Method is applied to the situation that the presentation control function to board carries out automatic test.The method that the present embodiment provides can be by testing
The device of board realizing, can be realized by way of software and/or hardware, and is integrated in test fixture by this device.Ginseng
Examine Fig. 1, the method specifically includes：
The color data of S110, the acquisition color sensor display image collection from display screen.
In the present embodiment, test fixture is the device that board can be tested, and it can be multiple with test board
Function, including presentation control function.
Wherein, color sensor is arranged at the display surface of display screen, you can to gather the face in display screen display picture
Chromatic number evidence.Specifically, display location is in test fixture, and only when receiving display signal, just can be shown.Its
In, display signal is the signal that the control display screen that the tested board being connected with test fixture is sent is shown, wherein permissible
The information such as the shape data of the color data including display image and display image.
Optionally, color data is coloured light three primary colors colour, and that is, color sensor passes through to gather display screen display picture
Color confirms the coloured light three primary colors colour of this color.If color data can be (R：254；G：142；B：5).
S120, according to color data confirm tested board presentation control function test result.
Further, store color data set in advance in test fixture, this color data set in advance and quilt
The color data of drafting board card control display screen display image is identical, when it specifically can be display screen display image, Show Color
Corresponding accurate coloured light three primary colors colour.Specifically, the color data of acquisition is compared with color data set in advance
Right, the presentation control function of tested board is determined according to comparison result.
May be such that the color data of acquisition exists during the color data obtaining color sensor collection
Error.Impact test result being brought in order to avoid error, can set an error range.When obtain color data with
When the comparison result of color data set in advance is in error range, confirm that the presentation control function of tested board is normal.
As another kind of optional test result validation testing, number of colours set in advance can be stored in test fixture
According to scope, and confirm the color data obtaining whether in the range of color data.If in the range of color data, confirm tested
The presentation control function of board is normal.
Further, when the test result of the presentation control function of tested board is abnormal, tester can be notified,
Later stage debugging is carried out by tester.Because presentation control function is the one of which survey that test fixture is carried out to tested board
Examination, so when this test result is abnormal, test fixture, after carrying out abnormal prompt, still can continue to tested board
Other functions are tested.
Optionally, the number of color sensor is at least three, depending on its specific number can be according to actual conditions.When
When the number of color sensor is three, comprise in display signal to make the region of the display image of three color sensor collections divide
Do not show red (R：255；G：0；B：0), green (R：0；G：255；B：0) and blue (R：0；G：0；B：255) instruction.When
When the number of color sensor is more than three, the region of the display image of wherein at least three color sensor collection shows respectively
Red (R：255；G：0；B：0), green (R：0；G：255；B：0) and blue (R：0；G：0；B：255).Due to red, green
It is three primary colors with blueness, other random colors can be modulated according to this three primary colors.Therefore, whether can in confirmation tested board
It is necessary to confirm that can tested board control display screen show three primary colors exactly during normal control display screen display.Certainly, exist
On the basis of trichromatic, the other color of tested board control display screen display can also be set, and sensed by corresponding color
Device gathers the color data of this color.
Test fixture, before carrying out board test, confirms that display screen is normal imaging, that is, in board test process, no
Occur and the abnormal situation of test result is led to due to the problem of display screen.Meanwhile, shown with display screen in tested board
During signal communication, show the color data synchronous transfer in signal and shown, and be transmitted with the form of data signal,
Make display screen in display image, the image of same color will not produce deviation because display location is different.Therefore, color
Sensor gathers during color data it is not necessary to cover whole viewing areas of same color from display image, so can also
Reduce the quantity required of color sensor.
Further, the color data of a certain color sensor collection do not meet test passes standard (as with preset
The difference of color data is more than error range) when, just can confirm that the presentation control function of tested board is abnormal.Carrying out exception
During prompting, the extremely corresponding color sensor of tester or color data can be informed, so that tester's which bar clear and definite
Circuit occurs abnormal.
The method of the test board that the present embodiment provides, is gathered from the display image of display screen by color sensor
Color data confirms whether the presentation control function of tested board is normal, so that board test more automates, intelligent.
In addition, testing efficiency need not be improved and test is accurate by manual detection exact p-value result it is also possible to save manpower simultaneously
Rate.
Embodiment two
A kind of flow chart of the method for test board that Fig. 2 a provides for the embodiment of the present invention two.The present embodiment is above-mentioned
It is optimized on the basis of embodiment.The method of the test board providing with reference to Fig. 2 a, the present embodiment specifically includes：
S210, to tested board send trigger so that tested board according to trigger to display screen send carry
There is the display signal of default color data.
Specifically, test fixture sends a trigger to tested board, comprises startup display and refer in this trigger
Order, wherein, starts idsplay order and is used for notifying tested board to send display signal to display screen.
Further, tested board, after receiving trigger, according to startup idsplay order therein, is sent out to display screen
Send display signal.Wherein, display signal is stored in advance in tested board, and carries default number of colours in this display signal
According to it is understood that comprising the idsplay order of control display screen display image in display signal, and this idsplay order includes
Default color data.
Specifically, default color data is that tester sets, for each specific region difference of control display screen
Display different set color composition display image.Wherein, each specific region is the region that each color sensor gathers color data.
Optionally, specific region is more than the pickup area of color sensor, and same color sensor so can be avoided to collect difference
The color data of setpoint color.Further, setpoint color preferably includes：Red, green and blue.Wherein, tester sets
Surely show that the particular content of signal includes setting default color data and specific region corresponding with default color data.
The color data of S220, the acquisition color sensor display image collection from display screen.
Optionally, after sending trigger to tested board, start to obtain the color data of color sensor collection.
A kind of schematic diagram of display screen display image that Fig. 2 b provides for the embodiment of the present invention two.Knowable to Fig. 2 b, display
The default color data of three colors is comprised, and in display screen, the corresponding specific region of three colors is respectively in signal
Region 21, region 22 and region 23.Wherein, the display surface of each specific region is respectively provided with a color sensor, i.e. face
Colour sensor 24, color sensor 25 and color sensor 26.The acquisition range of each color sensor is respectively region 27, region
28 and region 29.Wherein, each color sensor set location and set-up mode are not construed as limiting it is only necessary to meet region 27 to be less than area
Domain 21, region 28 is less than region 22 and region 29 and is less than region 23, can only adopt during each color sensor collection color data
Collect the color data of single area, do not affected by the color in other regions.Further, color sensor 24 pickup area
The color data of display image in 27, the color data of display image, color sensor in color sensor 25 pickup area 28
The color data of display image in 26 pickup area 29.
S230, according to color data confirm tested board presentation control function test result.
Wherein, when the number of color sensor is at least 3, this step can be specially：Adopted according to each color sensor
Whether the color data of collection and the difference of default color data are less than the presentation control function of threshold value confirmation tested board
Test result.
Wherein, threshold value can be set according to actual conditions.For example, set according to the purposes of tested board.
Specifically, default color data is identical with default color data in the display signal of tested board, that is, with quilt
The color data of drafting board card control display screen display image is identical.Before tested board is tested, can be existed by tester
The default color data of storage in write tested board in test fixture.
Further, if the difference of the color data of each color sensor collection and default color data is all less than door
Limit value, then confirm that the presentation control function of tested board is normal.If the color data of wherein at least one color sensor collection
It is more than or equal to threshold value with the difference of default color data, then confirm that the presentation control function of tested board is abnormal.
The process of the presentation control function of explanation board exemplary below：
It is assumed that default color data is：Red (R：255；G：0；B：0), green (R：0；G：255；B：0) and blue
(R：0；G：0；B：255).In conjunction with Fig. 2 b, set, the red specific region of display is region 21, the specific region of display green is
Region 22, the blue specific region of display is region 23.
Further, when starting tested board is carried out presentation control function test, test fixture is sent out to tested board
Send trigger so that tested board the display signal comprising above- mentioned information is sent to display screen so that display screen according to
This display signal display image.
Further, obtain the color data of each color sensor display image collection from display screen specific region.
Wherein, the color data of color sensor 24 collection is (R：254；G：1；B：0), the color data of color sensor 25 collection is
(R：0；G：249；B：0), the color data of color sensor 26 collection is (R：0；G：0；B：255).The threshold value setting as 2,
Then respectively by (R：254；G：1；B：0) with (R：255；G：0；B：0)、(R：0；G：252；B：0) with (R：0；G：255；B：0) and
(R：0；G：0；B：255) with (R：0；G：0；B：255) poor.With (R：254；G：1；B：0) with (R：255；G：0；B：0) as a example,
When differing from, respectively will be poor for corresponding to R, G, B numerical value, the difference obtaining is respectively 1,1 and 0, and each difference is respectively less than thresholding
Value 5.After obtaining whole differences, confirm that the corresponding difference of color data of color sensor 25 collection is more than threshold value 5, therefore really
Determine the color exception of specific region 22 display, that is, green can not normally show, and then confirm the presentation control function of tested board
Abnormal.Now, test fixture can carry out abnormal prompt to tester, notifies tester's green display abnormal.If color
The color data of sensor 25 collection is (R：0；G：254；B：0), after, then continuing operation after execution, can confirm that tested board
Presentation control function is normal.
It is another kind of optional method of test board below, in the method, the display letter of control display screen display image
Number it is stored in test fixture, when tested board is carried out with the test of presentation control function, from test fixture to tested
Board sends display signal.With reference to Fig. 2 c, the method specifically includes：
S240, send to tested board and carry the display signal of default color data, so that tested board is according to showing
Show that signal control display screen is shown.
Specifically, display signal is stored in test fixture.Tested board receive display signal after, to display signal
The data (as default color data) carrying does not make any process, is shown according only to this display signal control display screen
Show.Wherein, tested board is shown by control signal control display screen, and comprises in control signal to show the whole of signal
Data, you can so that control signal is interpreted as display screen discernible display signal.
The color data of S250, the acquisition color sensor display image collection from display screen.
S260, according to color data confirm tested board presentation control function test result.
The technical scheme that the present embodiment provides, by sending trigger to tested board, so that tested board is to display
Device sends the display signal carrying default color data so that display screen is shown accordingly, obtains each color sensing
The color data that device gathers from the display image of display screen, and will be poor with default color data for this color data, and then
Test result according to the presentation control function making difference results verification tested board, it is possible to achieve the display of automatic test board
Control function, need not improve testing efficiency simultaneously and test is accurate by manual detection exact p-value as a result, it is possible to save manpower
Really rate.
Embodiment three
A kind of structural representation of the device of test board that Fig. 3 provides for the embodiment of the present invention three.With reference to Fig. 3, this dress
Put and specifically include：Data acquisition module 301 and results verification module 302.
Wherein, data acquisition module 301, for obtaining the number of colours of the display image collection from display screen for the color sensor
According to；Results verification module 302, for confirming the test result of the presentation control function of tested board according to color data.
The device of the test board that the present embodiment provides, is gathered from the display image of display screen by color sensor
Color data confirms whether the presentation control function of tested board is normal, so that board test more automates, intelligent.
In addition, testing efficiency need not be improved and test is accurate by manual detection exact p-value result it is also possible to save manpower simultaneously
Rate.
On the basis of the various embodiments described above, also include：Signal transmitting module, for sending triggering letter to tested board
Number, so that tested board sends, according to trigger, the display signal carrying default color data to display screen.
On the basis of the various embodiments described above, the number of color sensor is at least 3, accordingly, results verification module
302 specifically for：Whether the color data according to the collection of each color sensor is less than thresholding with the difference of default color data
Value confirms the test result of the presentation control function of tested board.
On the basis of the various embodiments described above, each specific region that default color data is used for control display screen shows respectively
Show different set color composition display image, wherein, each specific region is the region that each color sensor gathers color data.
On the basis of the various embodiments described above, setpoint color includes：Red, green and blue.
The device of test board provided in an embodiment of the present invention is applied to the test board that above-mentioned any embodiment provides
Method, possesses corresponding function and beneficial effect.
Example IV
A kind of structural representation of test fixture that Fig. 4 provides for the embodiment of the present invention four.On this test fixture is applied to
The method that the test board of any embodiment offer is provided.With reference to Fig. 4, the test fixture 4 that the present embodiment provides includes：Master control borad
401st, display screen 402, color sensor 403, communication interface 404 and display screen interface 405, wherein, master control borad 401 respectively with
Communication interface 404 and color sensor 403 connect, and display screen 402 is connected with display screen interface 405, and color sensor 403 is arranged
Display surface in display screen 402.
Communication interface 404, for carrying out data interaction with tested board；Color sensor 403, for gathering display screen
The color data of 402 displays, and send to master control borad 401；Master control borad 401, for being sent out to tested board by communication interface 404
Send trigger, be additionally operable to confirm the test result of the presentation control function of tested board according to color data；Display screen interface
405, for receiving the display signal that tested board generates according to display trigger, and send to display screen 402；Display screen
402, for being shown according to display signal.
Optionally, the number of color sensor 403 is at least 3.In Fig. 4, merely exemplary three colors of display sense
Device 403.
Also optional, set-up mode the present embodiment of color sensor 403 is not construed as limiting.Display screen interface 405 is acceptable
It is arranged on the edge of display screen 402, as the part of display screen 402.
Further, the structural representation of a kind of board testing system that Fig. 5 provides for the embodiment of the present invention four.In Fig. 5
Including the test fixture of Fig. 4, also include tested board 5, wherein, tested board 5 includes：Board communication interface 501 and board show
Display screen interface 502.
Specifically, board communication interface 501 is connected with communication interface 404, for carrying out data interaction with test fixture 4；
Board display screen interface 502 is connected with display screen interface 405, for sending display signal.
Exemplary, the master control borad 401 of test fixture 4 passes through communication interface 404 and sends trigger to tested board 5,
Comprise in this trigger to start idsplay order.Tested board 5 when trigger is received by board communication interface 501,
To show that signal passes through board display screen interface 502 and sends to test fixture 4 accordingly, carry default in this display signal
Color data.The display screen 402 of test fixture 4 shows corresponding image according to the control signal that display screen interface 405 receives.Face
Colour sensor 403 gathers the color data of display screen 402 display image in pickup area and sends to master control borad 401, its
In, there is default color data in master control borad 401.Master control borad 401 confirm the color data of color sensor 403 collection with pre-
If the difference of color data whether be less than threshold value, and then determine the display function test result of tested board 5.
Optionally, color sensor 403 number is 3.Wherein, default color data is respectively：Red：(R：255；
G：0；B：0), green：(R：0；G：255；B：0) and blue：(R：0；G：0；B：255), and threshold value be 5.In display image
The setting regions of display above three color may be referred to Fig. 2 b.
If in general, display screen can accurately show redness, green and blue, can confirm that the display of tested board
Control function is normal.
Optional again, test fixture 4 also includes executing display screen (not shown), for showing test process to tester
And test result, it is additionally operable to show that tester passes through test parameter that input unit (not shown, such as keyboard etc.) inputs etc..
That is, display screen 402 is only used for testing the presentation control function of tested board 5, and is not involved in test process, test result and survey
The display of examination parameter.
Test fixture provided in an embodiment of the present invention can be used for executing the side of the test board that above-mentioned any embodiment provides
Method, possesses corresponding function and beneficial effect.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore although being carried out to the present invention by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other Equivalent embodiments more can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (11)
1. a kind of method of test board is it is characterised in that include：
Obtain the color data of the display image collection from display screen for the color sensor；
Confirm the test result of the presentation control function of tested board according to described color data.
2. method according to claim 1 is it is characterised in that described acquisition color sensor is from the display image of display screen
Before the color data of collection, also include：
Send trigger to tested board, so that described tested board sends to display screen according to described trigger carrying
The display signal of default color data.
3. method according to claim 1 is it is characterised in that the number of described color sensor is at least 3；
The test result of the described presentation control function confirming tested board according to described color data includes：
Whether thresholding is less than with the difference of default color data according to the described color data that each described color sensor gathers
Value confirms the test result of the presentation control function of tested board.
4. according to the method in claim 2 or 3 it is characterised in that described default color data is used for control display screen
Each specific region show respectively different set color composition display image, wherein, each described specific region be each described color
Sensor gathers the region of color data.
5. method according to claim 4 is it is characterised in that described setpoint color includes：Red, green and blue.
6. a kind of device of test board is it is characterised in that include：
Data acquisition module, for obtaining the color data of the display image collection from display screen for the color sensor；
Results verification module, for confirming the test result of the presentation control function of tested board according to described color data.
7. device according to claim 6 is it is characterised in that also include：
Signal transmitting module, for sending trigger to tested board, so that described tested board is according to described trigger
Send the display signal carrying default color data to display screen.
8. device according to claim 6 is it is characterised in that the number of described color sensor is at least 3；
Described results verification module specifically for：
Whether thresholding is less than with the difference of default color data according to the described color data that each described color sensor gathers
Value confirms the test result of the presentation control function of tested board.
9. the device according to claim 7 or 8 is it is characterised in that described default color data is used for control display screen
Each specific region show respectively different set color composition display image, wherein, each described specific region be each described color
Sensor gathers the region of color data.
10. device according to claim 9 is it is characterised in that described setpoint color includes：Red, green and blue.
A kind of 11. test fixtures, the method for the test board described in any one of claim 1-5 is it is characterised in that wrap
Include：Master control borad, display screen, color sensor, communication interface and display screen interface, wherein, described master control borad respectively with described
Communication interface and described color sensor connect, and described display screen is connected with display screen interface, and described color sensor is arranged at
The display surface of described display screen；
Described communication interface, for carrying out data interaction with tested board；
Described color sensor, for gathering the color data that display screen shows, and sends to described master control borad；
Described master control borad, for sending trigger by described communication interface to tested board, is additionally operable to according to described color
The test result of the presentation control function of data validation tested board；
Described display screen interface, for receiving the display signal that tested board generates according to described trigger, and sends to aobvious
Display screen；
Described display screen, for being shown according to described display signal.
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| CN201610959189.6A CN106383305A (en) | 2016-11-03 | 2016-11-03 | Printed circuit board testing method, printed circuit board testing device and testing tool |
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| CN201610959189.6A CN106383305A (en) | 2016-11-03 | 2016-11-03 | Printed circuit board testing method, printed circuit board testing device and testing tool |
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| CN108345134A (en) * | 2018-01-11 | 2018-07-31 | 福建联迪商用设备有限公司 | The test method and intelligent object of display function |
| CN111397657A (en) * | 2020-03-20 | 2020-07-10 | 苏州浪潮智能科技有限公司 | Method and device for testing shipment risk of board |
| CN112685239A (en) * | 2020-12-22 | 2021-04-20 | 北京航天时代激光导航技术有限责任公司 | Automatic test system and method for multi-core DSP + FPGA framework processing circuit |
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| CN112685239A (en) * | 2020-12-22 | 2021-04-20 | 北京航天时代激光导航技术有限责任公司 | Automatic test system and method for multi-core DSP + FPGA framework processing circuit |
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