CN107656187A - A kind of differential line test information determines method and apparatus - Google Patents
A kind of differential line test information determines method and apparatus Download PDFInfo
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- CN107656187A CN107656187A CN201710801731.XA CN201710801731A CN107656187A CN 107656187 A CN107656187 A CN 107656187A CN 201710801731 A CN201710801731 A CN 201710801731A CN 107656187 A CN107656187 A CN 107656187A
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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]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
- G01R31/2812—Checking for open circuits or shorts, e.g. solder bridges; Testing conductivity, resistivity or impedance
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Abstract
The invention provides a kind of differential line test information to determine method and apparatus, this method includes obtaining Printed Circuit Board Design file, all-network information containing printed circuit board in Printed Circuit Board Design file, the information such as test point information, the network name of differential line pair is determined according to the Printed Circuit Board Design file, the test index information of differential line pair is determined according to the network name of differential line pair and Printed Circuit Board Design file.Information is tested by differential line provided by the invention and determines method, after the test index information of differential line pair is extracted, automation equipment reads these information, automatic test is carried out according to the information of point, drastically increase testing efficiency and the degree of accuracy, the impedance information of whole circuit board can be tested, solves and is tested in the prior art for wiring board differential impedance, testing efficiency is low and the problem of being unable to measurement circuit intralamellar part impedance strip.
Description
Technical field
The present invention relates to wiring board technical field of measurement and test, and in particular to a kind of differential line test information determines method and set
It is standby.
Background technology
In order to improve transmission rate and transmission range, computer industry and the communications industry more and more use high speed serialization
Bus, between the chips, interconnection at a high speed is realized between board, between backboard and business board.The speed of these high-speed serial bus
From conventional USB2.0, LVDS and FireWire1394 hundreds of Mbps, PCI-Express G1/G2, SATA to today
G1/G2, XAUI/2XAUI, XFI several Gbps or even 30Gbps.The PCB client of computer and the communications industry walks to difference
The impedance control of line requires more and more higher, and this makes PCB manufacturers and high-speed PCB personnel are faced unprecedented chooses
How war, these PCB designs out go to carry out these differential lines test and a problem.
At present, the common practice of PCB factories is to increase several impedance strips on assist side side, then manually survey these
Impedance strip, this can not reflect the actual conditions of wiring board internal impedance circuit.If the impedance strip in measurement circuit plate, is tested
Points are too many, can not manually be tested.
The content of the invention
In view of this, the embodiments of the invention provide a kind of differential line test information to determine method and apparatus, to solve
Tested in the prior art for wiring board differential impedance, testing efficiency is low and the problem of being unable to measurement circuit intralamellar part impedance strip.
Therefore, the embodiments of the invention provide following technical scheme：
The embodiments of the invention provide a kind of differential line test information to determine method, including：Printed circuit board is obtained to set
Count file；The network name of differential line pair is determined according to the Printed Circuit Board Design file；According to the network name and
The Printed Circuit Board Design file determines the test index information of the differential line pair.
Alternatively, the Printed Circuit Board Design file includes network information files, and the network information files record has
Network name and each network whether be differential networks mark；It is described poor according to Printed Circuit Board Design file determination
The network name of separated time road pair, including：Whether network name and each network in the network information files are poor
The mark of subnetwork extracts the network name of the differential line pair from the network information files.
Alternatively, the Printed Circuit Board Design file includes test point message file, the test point message file note
Record has network name and corresponding extreme coordinates information；The same end that the test index information includes the differential line pair is surveyed
Pilot coordinate information.
Alternatively, it is described that the differential line pair is determined according to the network name and the Printed Circuit Board Design file
Test index information, including：The network name of the differential line pair and right is inquired about in the test point message file
The extreme coordinates information answered；Determined according to the extreme coordinates information with end test point coordinate information.
Alternatively, it is described to be determined according to the extreme coordinates information with end test point coordinate information, including：Determine abscissa
It is worth identical extreme coordinates information；One group of abscissa value identical extreme coordinates information is selected to be used as with end test point coordinate letter
Breath.
Alternatively, the test index information also includes the angle information between the test point with end.
Alternatively, it is determined that it is described with end test point coordinate information after, in addition to：Obtained using arc tangent formula described
With the angle information between the test point of end.
Alternatively, the test index information also includes the range information between the test point with end.
Alternatively, it is determined that it is described with end test point coordinate information after, in addition to：Utilize distance between two points formula and institute
State with end test point coordinate information, calculate described with the range information held between test point.
Alternatively, the Printed Circuit Board Design file includes line width information file, and the line width information file record has
The line length information of network name and corresponding place layer；The test index information includes the line length information of place layer.
Alternatively, it is described that the differential line pair is determined according to the network name and the Printed Circuit Board Design file
Test index information, including：The network name of the differential line pair is inquired about in the line width information file；Comparison query
The line length information of layer where corresponding to the network name of the differential line pair arrived；Place layer of the extraction with maximum
Line length information.
Alternatively, the Printed Circuit Board Design file includes line width information file and impedance design value file, the line
Wide message file record has network name and corresponding place layer information and the line length information of place layer；The impedance design
Value file record has at least one in layer information and corresponding line width information, corresponding impedance information, corresponding tolerance information
It is individual；The test index information includes at least one in line width information, impedance information, tolerance information.
Alternatively, it is described that the differential line pair is determined according to the network name and the Printed Circuit Board Design file
Test index information the step of include：The network name of the differential line pair is inquired about in the line width information file；Than
The line length information of layer where corresponding to the network name of the differential line pair relatively inquired；Institute of the extraction with maximum
Layer information where corresponding to line length information in layer；The place layer information of extraction is inquired about in the impedance design value file；
Extract at least one in line width information, corresponding impedance information, corresponding tolerance information corresponding to the place layer information inquired
It is individual.
Alternatively, the Printed Circuit Board Design file includes line width information file, and the line width information file record has
Network name and corresponding total line length information；The test index information includes total line length information.
Alternatively, it is described that the differential line pair is determined according to the network name and the Printed Circuit Board Design file
Test index information the step of include：The network name of the differential line pair is inquired about in the line width information file；Carry
Take total line length information corresponding with the network name inquired.
The embodiment of the present invention additionally provides a kind of computer-readable recording medium, is stored thereon with computer program, described
Realize that the differential line test information as any one of claim 1-15 determines when computer program is executed by processor
Method.
The embodiment of the present invention additionally provides a kind of computer equipment, including：At least one processor；And with it is described at least
The memory of one processor communication connection；Wherein, have can be by least one computing device for the memory storage
Computer program, the computer program is by least one computing device, so that at least one computing device
Differential line test information any one of claim 1-15 determines method.
Technical scheme of the embodiment of the present invention, has the following advantages that：
The embodiments of the invention provide a kind of differential line test information to determine method and apparatus, and this method includes first obtaining
Printed Circuit Board Design file, the all-network information containing printed circuit board in Printed Circuit Board Design file, test point letter
The information such as breath, the network name of differential line pair is determined according to the Printed Circuit Board Design file, according to the net of differential line pair
Network title and Printed Circuit Board Design file determine the test index information of differential line pair.By provided in an embodiment of the present invention
Differential line test information determines method, and after the test index information of differential line pair is extracted, automation equipment is read
These information, automatic test is carried out according to the information of point, drastically increases testing efficiency and the degree of accuracy, can tested whole
The impedance information of circuit board, solve and tested in the prior art for wiring board differential impedance, testing efficiency is low and can not test
The problem of wiring board internal driving bar.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart that differential line test information according to embodiments of the present invention determines method；
Fig. 2 is the network signal for the differential line pair that differential line test information according to embodiments of the present invention determines method
Figure；
Fig. 3 is the flow that differential line according to the preferred embodiment of the invention determines method with end test point coordinate information
Figure；
Fig. 4 is that the line length information for the place layer that differential line according to the preferred embodiment of the invention has maximum determines
The flow chart of method；
Fig. 5 is the flow chart that differential line test information according to the preferred embodiment of the invention determines method；
Fig. 6 is the flow chart that differential line total length information according to the preferred embodiment of the invention determines method；
Fig. 7 is the hardware configuration for the computer equipment that differential line test information according to embodiments of the present invention determines method
Schematic diagram.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to which explanation, term " first ", " second ", " the 3rd " are only used for describing purpose,
And it is not intended that instruction or hint relative importance.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It is be combined with each other into conflict can.
Embodiment 1
A kind of differential line test information is provided in the present embodiment and determines method, and Fig. 1 is according to embodiments of the present invention
Differential line test information determine the flow chart of method, as shown in figure 1, the flow comprises the following steps：
S101：Obtain Printed Circuit Board Design file；After the completion of PCB Printed Circuit Board Designs, according to design software
Cadence can automatically extract Printed Circuit Board Design file, and Printed Circuit Board Design file includes a variety of, such as test point letter
File, line width information file, impedance design value file etc. are ceased, the present invention can obtain one or more therein.
S102：The network name of differential line pair is determined according to Printed Circuit Board Design file；In the printing electricity extracted
In the plate design document of road, include PCB all-network information and whether be the information such as differential networks, can be determined with this
The network name of differential line pair.
S103：The test of differential line pair is determined according to the network name of differential line pair and Printed Circuit Board Design file
Indication information.Specifically, Printed Circuit Board Design file includes much information, such as test point information, line width information, impedance
Value information etc. is designed, according to the network name of differential line pair, the differential line for needing to test can be extracted from various files
To test index information, the length of distance, differential line such as between test point position, test point.
The differential line test information provided according to embodiments of the present invention determines method, by obtaining Printed Circuit Board Design
File, the network name of differential line pair is determined according to Printed Circuit Board Design file, according to the network name and printed circuit
Plate design document determines the test index information of differential line pair, can be automatically determined according to the above method all on circuit board
Index of the differential line to required detection.After the test index information of differential line pair is extracted, automation equipment can be with
Based on these information, automatic detection is carried out to circuit board, the information that detection obtains is entered with the test index information extracted
Row compares to determine the differential line on circuit board to the presence or absence of exception, this programme drastically increases circuit board testing efficiency
And the degree of accuracy, and it is possible thereby to test the impedance information of whole circuit board, solve and hindered in the prior art for wiring board difference
Anti- test, testing efficiency is low and the problem of being unable to measurement circuit intralamellar part impedance strip.
Specifically, Printed Circuit Board Design file includes network information files, and network information files record has network name
And each network whether be referred to as differential networks mark, such as have recorded PCB all-network information, include network name,
Whether it is differential networks, electrical length, information, the above-mentioned steps S102 such as PIN quantity are related to according to Printed Circuit Board Design text
Part determines the network name of differential line pair, in a detailed embodiment, the network name in network information files
And whether each network is that the mark of differential networks extracts the network name of differential line pair, example from network information files
Such as：
Item3(NET)
Net Name:$40I575\DDRH_DQS3_N
Member of Diff Pair:$40I575\DDRH_DQS3_
Item 7(NET)
Net Name:$40I575\DDRH_DQS3_P
Member of Diff Pair:$40I575\DDRH_DQS3_
According to this " Member of Diff Pair " information extractions go out one group of differential testing to network information $ 40I575
DDRH_DQS3_N and $ 40I575 DDRH_DQS3_P, the differential line extracted is to network diagram as shown in Fig. 2 according to this
Extracting method, extract all differential lines pair.
In an optional embodiment, Printed Circuit Board Design file includes test point message file, usually IPC-
356 file formats, this document have recorded the information, i.e. the test point message file such as the network name of each point, coordinate, place layer
Record has network name and corresponding extreme coordinates information, and the test index information of differential line includes the same of differential line pair
Hold test point coordinate information.Above-mentioned steps S103 is related to network name and the Printed Circuit Board Design text according to differential line pair
Part determines the test index information of differential line pair, as shown in figure 3, step S103 specifically may include steps of：
S1031A, the network name and corresponding extreme coordinates letter of differential line pair are inquired about in test point message file
Breath；
S1032A, determined according to extreme coordinates information with end test point coordinate information.
Automatic detection system can look for the same end test point on circuit board according to same end test point coordinate information, and
Judge that the position that coordinate information indicates whether there is with end test point according to impedance signal, thereby determine that actual same on circuit board
Test point is held with holding test point position whether consistent, it is different that the same end test point detected can be recorded when inconsistent during design
Often.
S1032A specifically may include steps of：
S1032A1, determine abscissa value identical extreme coordinates information；
S1032A2, one group of abscissa value identical extreme coordinates information is selected to be used as with end test point coordinate information.Such as
One differential testing shares four extreme coordinates values of information to one, finds two extreme coordinates of abscissa value identical, is same
Hold test point coordinate information.
Such as in a detailed embodiment, the network name $ 40I575 of differential line pair DDRH_DQS3_N and $
40I575 DDRH_DQS3_P, corresponding coordinate information is as follows：
$40I575\DDRH_DQS3_N A01X+013517Y-001376X0180Y0180R270S0
$40I575\DDRH_DQS3_P A01X+013517Y-001927X0200Y0200R270S1
It can thus be concluded that network name $ 40I575 an extreme coordinates corresponding to DDRH_DQS3_N for (13517 ,-
1376), network name $ 40I575 an extreme coordinates corresponding to DDRH_DQS3_P be (13517, -1927) because end points sit
It is identical to mark (13517, -1376) and (13517, -1927) abscissa value, then it is to sit up straight punctuate together to illustrate the two end points, therefore
The two coordinates are to judge reality according to same end test point position during design with end test point coordinate information, automation equipment
Same end test point coordinate it is whether abnormal.
In an optional embodiment, Printed Circuit Board Design file includes test point message file, test point letter
Breath file record has network name and corresponding extreme coordinates information, and the same end that test index information includes differential line pair is surveyed
Pilot coordinate information, in addition to the angle information between the test point of end.
The angle information between the test point with end is obtained using arc tangent formula.Specifically, differential line is being got
To same end test point coordinate information after, such as two with end test points coordinate values be：1 coordinate value of point is (x1,y1), point 2
Coordinate value is (x2,y2), then the angle between 2 points can be according to arc tangent formula：Obtain 2 points it
Between angle information.Such as above-mentioned with end test point coordinate (13517, -1376) and (13517, -1927), by anyway
It is 270 ° to cut formula and obtain the angle that the two end points are formed：
After automation equipment reads the angle information between same end test point, according to the angle of same end test point during design
Whether information is consistent to determine the angle of the same end test point of reality, and it is different that the same end test point detected is recorded if inconsistent
Often, detection efficiency is improved.
In an optional embodiment, Printed Circuit Board Design file includes test point message file, test point letter
Breath file record has network name and corresponding extreme coordinates information, and the same end that test index information includes differential line pair is surveyed
Pilot coordinate information, in addition to the range information between the test point of end.
It is determined that after the test point coordinate information with end, sat using distance between two points formula and the same end test point
Information is marked, calculates the range information between the test point with end.Such as two coordinate values with end test point are：1 coordinate value of point
For (x1,y1), 2 coordinate values of point are (x2,y2), then the distance between 2 points can calculate according to distance between two points formula：Such as test point coordinate (13517, -1376) and (13517, -1927) is held for same,
The distance that the two end points are calculated by distance between two points formula is：
After automation equipment reads the range information between same end test point, according to the distance of same end test point during design
Whether information is consistent to determine the distance of the same end test point of reality, and it is different that the same end test point detected is recorded if inconsistent
Often, detection efficiency is improved.
In an optional embodiment, Printed Circuit Board Design file includes line width information file, line width information text
Part record has network name and the line length information of corresponding place layer, and test index information includes the difference line length of place layer
Spend information.
As shown in figure 4, above-mentioned steps S103 may comprise steps of：
S1031B, the network name of differential line pair is inquired about in line width message file；
S1032B, the line length information of place layer corresponding to the network name for the differential line pair that comparison query arrives；
S1033B, the line length information of place layer of the extraction with maximum.In PCB, it is understood that there may be multiple
Pcb layer, and the length that differential lines connect up on each layer circuit board has difference, according to the differential line pair extracted
Difference line length where corresponding to network name on every layer of printed circuit board, extract the difference of the place layer with maximum
Line length.
Automation equipment is contrasted with differential lines length information during design, sentenced according to the differential lines length information extracted
Whether the difference line length arrangement in disconnected wiring board is reasonable.
In an optional embodiment, Printed Circuit Board Design file includes line width information file and impedance design value text
Part, line width information file record have network name and corresponding place layer information and the line length information of place layer, impedance to set
Evaluation file record has in layer information and corresponding line width information, corresponding impedance information, corresponding tolerance information at least
One, test index information includes at least one in line width information, impedance information, tolerance information.
As shown in figure 5, above-mentioned steps S103 may comprise steps of：
S1031C, the network name of differential line pair is inquired about in line width message file；Printed Circuit Board Design file bag
Line width information file and impedance design value file are included, line width information file record has network name and corresponding place layer information
With the line length information of place layer；
S1032C, the line length information of place layer corresponding to the network name for the differential line pair that comparison query arrives；
S1033C, place layer information corresponding to the line length information of place layer of the extraction with maximum；For example, according to difference
The network name $ 40I575 of the network name differential line pair of separated time road pair DDRH_DQS3_N and $ 40I575 DDRH_DQS3_
P, the line width information table of the differential lines of acquisition are as shown in table 1.
Table 1
| Network name | Layer name | Total length (mils) | Line width (mils) | Place layer length (mils) |
| $40I575\DDRH_DQS3_N | top | 219.54 | 5 | 22.3 |
| $40I575\DDRH_DQS3_N | ART22 | 219.54 | 4.5 | 197.24 |
| $40I575\DDRH_DQS3_P | top | 219.54 | 5 | 22.3 |
| $40I575\DDRH_DQS3_P | ART22 | 219.54 | 4.5 | 197.24 |
According to the line length of the network name of differential line pair and differential lines in the circuit board it is long the characteristics of, from table 1
The 2nd row also data needed for the 4th behavior are obtained, i.e., layer where differential lines is ART22 layers.
S1034C, the place layer information of extraction is inquired about in impedance design value file；Impedance design value file record has layer
It is at least one in information and corresponding line width information, corresponding impedance information, corresponding tolerance information；Such as impedance design
Value information table is as shown in table 2.
Table 2
| Layer | Single-ended/difference | Line width | Impedance | Tolerance |
| top | Difference | 5 | 50 | 10% |
| ART22 | Difference | 4.5 | 50 | 10% |
Layer where differential lines are obtained in step S1033C is ART22 layers, therefore the 2nd row data are required data in table 2.
S1035C, extract line width information, corresponding impedance information, corresponding tolerance corresponding to the place layer information inquired
It is at least one in information.Specifically, the information of differential line pair in Tables 1 and 2, the differential line test information of acquisition are integrated
Data are as shown in table 3.
Table 3
In an optional embodiment, Printed Circuit Board Design file includes line width information file, line width information file
Record has network name and corresponding total line length information；Test index information includes total line length information.
As shown in fig. 6, above-mentioned steps S103 may comprise steps of：
S1031D, the network name of differential line pair is inquired about in line width message file；Line width information file record has net
Network title and corresponding total line length information；
S1032D, extract total line length information corresponding with the network name inquired.In printed circuit board, difference
The total length of circuit includes the total length that differential lines pass through every layer circuit board.Such as in the line width information table table 1 of differential lines,
The total length information of differential line is 219.54mils.
Information is tested by the differential line in above-mentioned embodiment and determines method, the automatic test finally obtained
The one group of test needed is as shown in table 5 to data：
Table 5
Line length information, line width information, impedance information, the tolerance that automation equipment reads the place layer with maximum are believed
After pitch information between breath and test point, actual impedance value is calculated, if the impedance value is in design impedance value scope
Interior, then differential line design is qualified, if the impedance value records the differential lines roadlock beyond design impedance design value scope
Anti- design is unqualified.
Information is tested by the differential line of the embodiment of the present invention and determines method, PCB design file can be automatically extracted out
In all differential lines to data, automation equipment reads in these data, according to the information of point carry out automatic test, greatly
Improve testing efficiency and the degree of accuracy, can to whole printed circuit board carry out testing impedance.
Embodiment 2
The embodiment of the present invention additionally provides a kind of computer-readable recording medium, and the computer-readable storage medium is stored with meter
Calculation machine executable instruction, the computer executable instructions can perform the differential line test information in above-mentioned any means embodiment
Determine method.Wherein, the storage medium can be magnetic disc, CD, read-only memory (Read-Only Memory, ROM),
Random access memory (RandomAccess Memory, RAM), flash memory (Flash Memory), hard disk (Hard
Disk Drive, abbreviation：) or solid state hard disc (Solid-State Drive, SSD) etc. HDD；The storage medium can also wrap
Include the combination of the memory of mentioned kind.
Embodiment 3
Fig. 7 is the hardware configuration for the computer equipment that differential line test information according to embodiments of the present invention determines method
Schematic diagram, as shown in fig. 7, the equipment includes one or more processors 710 and memory 720, with a processor in Fig. 7
Exemplified by 710.
Perform differential line test information and determine that the equipment of method can also include：Input unit 730 and output device
740。
Processor 710, memory 720, input unit 730 and output device 740 can pass through bus or other modes
Connect, in Fig. 7 exemplified by being connected by bus.
Processor 710 can be central processing unit (Central Processing Unit, CPU).Processor 710 may be used also
Think other general processors, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other PLDs, discrete gate or transistor logic,
The chips such as discrete hardware components, or the combination of above-mentioned all kinds of chips.General processor can be microprocessor or the processing
Device can also be any conventional processor etc..
Memory 720 is used as a kind of non-transient computer readable storage medium storing program for executing, available for storing non-transient software program, non-
Transient computer executable program and module, as corresponding to the differential line test information in the embodiment of the present application determines method
Programmed instruction/module.Processor 710 is stored in non-transient software program, instruction and mould in memory 720 by operation
Block, various function application and data processing so as to execute server, that is, realize the differential line in above method embodiment
Test information determines method.
Memory 720 can include storing program area and storage data field, wherein, storing program area can store operation system
Application program required for system, at least one function；Storage data field can store making for differential line test information determining means
With data created etc..In addition, memory 720 can include high-speed random access memory, non-transient deposit can also be included
Reservoir, for example, at least a disk memory, flush memory device or other non-transient solid-state memories.In some embodiments
In, memory 720 is optional including that can pass through net relative to the remotely located memory of processor 710, these remote memories
Network is connected to the processing unit that differential line test information determines.The example of above-mentioned network includes but is not limited to internet, enterprise
In-house network, LAN, mobile radio communication and combinations thereof.
Input unit 730 can receive the numeral or character information of input, and produce and determined with differential line test information
The key signals input that the user of processing unit is set and function control is relevant.Output device 740 may include that display screen etc. is shown
Equipment.
One or more of modules are stored in the memory 720, when by one or more of processors
During 710 execution, method as shown in Figures 1 to 6 is performed.
The said goods can perform the method that the embodiment of the present invention is provided, and possesses the corresponding functional module of execution method and has
Beneficial effect and not ins and outs of detailed description in the present embodiment, for details, reference can be made in embodiment as shown in Figures 1 to 6
Associated description.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (17)
1. a kind of differential line test information determines method, it is characterised in that including：
Obtain Printed Circuit Board Design file；
The network name of differential line pair is determined according to the Printed Circuit Board Design file；
The test index information of the differential line pair is determined according to the network name and the Printed Circuit Board Design file.
2. differential line test information according to claim 1 determines method, it is characterised in that the printed circuit board is set
Meter file includes network information files, and the network information files record has whether network name and each network are difference net
The mark of network；The network name that differential line pair is determined according to the Printed Circuit Board Design file, including：
Whether network name and each network in the network information files are the mark of differential networks from the net
The network name of the differential line pair is extracted in network message file.
3. differential line test information according to claim 1 determines method, it is characterised in that the printed circuit board is set
Meter file includes test point message file, and the test point message file record has network name and corresponding extreme coordinates letter
Breath；The test index information includes the same end test point coordinate information of the differential line pair.
4. differential line test information according to claim 3 determines method, it is characterised in that described according to the network
Title and the Printed Circuit Board Design file determine the test index information of the differential line pair, including：
The network name of the differential line pair and corresponding extreme coordinates information are inquired about in the test point message file；
Determined according to the extreme coordinates information with end test point coordinate information.
5. differential line test information according to claim 4 determines method, it is characterised in that described according to the end points
Coordinate information determines same end test point coordinate information, including：
Determine abscissa value identical extreme coordinates information；
One group of abscissa value identical extreme coordinates information is selected to be used as with end test point coordinate information.
6. differential line test information according to claim 3 determines method, it is characterised in that the test index information
Also include the angle information between the test point with end.
7. differential line test information according to claim 6 determines method, it is characterised in that it is determined that described survey with end
After pilot coordinate information, in addition to：
The angle information between the test point with end is obtained using arc tangent formula.
8. differential line test information according to claim 3 determines method, it is characterised in that the test index information
Also include the range information between the test point with end.
9. differential line test information according to claim 8 determines method, it is characterised in that it is determined that described survey with end
After pilot coordinate information, in addition to：
Using distance between two points formula and the same end test point coordinate information, the distance calculated between the test point with end is believed
Breath.
10. differential line test information according to claim 1 determines method, it is characterised in that the printed circuit board
Design document includes line width information file, and the line width information file record has the line length of network name and corresponding place layer
Spend information；The test index information includes the line length information of place layer.
11. differential line test information according to claim 10 determines method, it is characterised in that described according to the net
Network title and the Printed Circuit Board Design file determine the test index information of the differential line pair, including：
The network name of the differential line pair is inquired about in the line width information file；
The line length information of layer where corresponding to the network name for the differential line pair that comparison query arrives；
The line length information of place layer of the extraction with maximum.
12. differential line test information according to claim 1 determines method, it is characterised in that the printed circuit board
Design document includes line width information file and impedance design value file, and the line width information file record has network name and right
The place layer information and the line length information of place layer answered；The impedance design value file record has layer information and corresponding line
It is at least one in wide information, corresponding impedance information, corresponding tolerance information；The test index information is believed including line width
It is at least one in breath, impedance information, tolerance information.
13. the differential line test information described in the claim 12 determines method, it is characterised in that described according to the net
The step of network title and the Printed Circuit Board Design file determine the test index information of the differential line pair includes：
The network name of the differential line pair is inquired about in the line width information file；
The line length information of layer where corresponding to the network name for the differential line pair that comparison query arrives；
Layer information where corresponding to the line length information of place layer of the extraction with maximum；
The place layer information of extraction is inquired about in the impedance design value file；
Extract in line width information, corresponding impedance information, corresponding tolerance information corresponding to the place layer information inquired extremely
It is few one.
14. differential line test information according to claim 1 determines method, it is characterised in that the printed circuit board
Design document includes line width information file, and the line width information file record has network name and corresponding total line length letter
Breath；The test index information includes total line length information.
15. differential line test information according to claim 14 determines method, it is characterised in that described according to the net
The step of network title and the Printed Circuit Board Design file determine the test index information of the differential line pair includes：
The network name of the differential line pair is inquired about in the line width information file；
Extract total line length information corresponding with the network name inquired.
16. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that the computer program
Realize that the differential line test information as any one of claim 1-15 determines method when being executed by processor.
A kind of 17. computer equipment, it is characterised in that including：
At least one processor；And
The memory being connected with least one processor communication；Wherein, have can be by described at least one for the memory storage
The computer program of individual computing device, the computer program by least one computing device so that it is described at least
Differential line test information any one of one computing device claim 1-15 determines method.
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| CN201710801731.XA CN107656187B (en) | 2017-09-07 | 2017-09-07 | Differential line test information determining method and device |
| PCT/CN2017/114422 WO2019047392A1 (en) | 2017-09-07 | 2017-12-04 | Differential line testing information determination method and device |
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| CN201710801731.XA CN107656187B (en) | 2017-09-07 | 2017-09-07 | Differential line test information determining method and device |
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| WO2019047392A1 (en) | 2019-03-14 |
| CN107656187B (en) | 2020-02-28 |
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