CN101206677A - Method for verifying difference line pairs and storage medium capable of reading by computer - Google Patents
Method for verifying difference line pairs and storage medium capable of reading by computer Download PDFInfo
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- CN101206677A CN101206677A CNA2006101675531A CN200610167553A CN101206677A CN 101206677 A CN101206677 A CN 101206677A CN A2006101675531 A CNA2006101675531 A CN A2006101675531A CN 200610167553 A CN200610167553 A CN 200610167553A CN 101206677 A CN101206677 A CN 101206677A
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- lead
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Abstract
The invention discloses a method for checking different pairs and a computer readable storage medium. The method comprises the following steps that: a layout is provided and the attribute data corresponding to each directing line in the layout are contrasted, a plurality of different pairs to be detected are judged from the direction lines; afterwards, turning point formed by each different pair is found out, and each different pair is divided into a plurality of different section of line sets. Therefore, the distance between two sections of line of each different section of line set is calculated and the calculated distance is compared with a presetting value to judge whether the layout of the detected different section of line set is right or not.
Description
Technical field
The invention relates to a kind of circuit layout, and particularly relevant for a kind of right method of differential lines and computer readable storage medium checked.
Background technology
Along with science and technology is maked rapid progress, the printed circuit board (PCB) of high frequency high-density (printed circuit board) design has become the key that modern electronic product develops.Chief reason is that on the topological design of printed circuit board (PCB), a layout tends to present simultaneously hundreds of even more electronic component and lead.Based on portability and stability that electronic product is stressed, the layout type of those electronic components and lead often must be under limited layout area, and the corresponding relation of seeking the best is avoided the generation of coupling path.By this, be present in the noise between electronic component or the lead, just can be lowered effectively.
For the foregoing reasons, printed circuit board (PCB) in the process of carrying out circuit layout, the layout type between lead and the lead, the designer can utilize two leads to constitute one group of mode that differential lines is right usually, reduces the generation of coupling path on the entity.For instance, the layout type of USB (universal serial bus) (universal serial bus), Low Voltage Differential Signal (low voltage differential signal) and sequence A TA (Serial ATA), all must adopt the right layout type of differential lines, strengthen the yield on the print circuit plates making.
Yet in the layout environments of printed circuit board (PCB), the designer often can only come the differential lines in the layout checking by artificial operation now.At this moment, the designer must expend huge notice and patient degree, and it is right to check each differential lines seriatim, constitutes two right leads of this differential lines to detect, and whether distance between the two meets design requirement.What well imagine is that this kind depended merely on artificial verification mode, not only labor intensive.And in the practical operation, if the designer has careless mistake slightly, the operating performance of printed circuit board (PCB) will be had a greatly reduced quality.What is more, designer's careless mistake will cause the printed circuit board (PCB) can't operate as normal.
Summary of the invention
The invention provides a kind of right method of differential lines of checking, the right layout type of each differential lines in the energy mechanical check layout, with the artificial careless mistake of solution prior art operation, and then the stability of lifting electronic product.
The present invention proposes a kind of right method of differential lines of checking.The method comprises the steps.One layout at first is provided, and this layout comprises many leads.Then, compare the pairing attribute data of each lead, right with a plurality of differential lines that from these leads, determine institute's desire detection.Afterwards, find out each differential lines to formed turning point, with each differential lines to being distinguished into a plurality of differential sets of line segments.By this, calculate the distance of two line segments in each differential sets of line segments, and the distance that will calculate compares with a predetermined value, whether correct with the layout type of judging the differential sets of line segments that is detected.
The present invention reintroduces a kind of right method of differential lines of checking.The method comprises the steps.At first provide a layout, comprising first lead and second lead.Whether compare first attribute data of first lead and second attribute data of second lead, be that differential lines is right to differentiate first lead and second lead.If first lead and second lead are that differential lines is right, then check the line-spacing of first lead and second lead.
In preferred embodiment of the present invention, above-mentionedly check differential lines right method also comprises the steps.Above-mentioned layout is translated into a layout inventory, and wherein this layout inventory is writing down the attribute data of each lead correspondence.In addition, after whether the layout type of judging the differential sets of line segments detected is correct, the incorrect differential sets of line segments of layout type among the figure of display layout.
In preferred embodiment of the present invention, when the pairing attribute data of each lead is a lead title, the step of above-mentioned " determine a plurality of differential lines that the institute desire detects to " comprising: detect the lead title of each lead one by one, to find out lead title corresponding mutually in twos in the above-mentioned lead title.Afterwards, according to corresponding mutually in twos lead title, it is right to find out above-mentioned differential lines.
In preferred embodiment of the present invention, when the pairing attribute data of each lead is a lead form, the step of above-mentioned " determine a plurality of differential lines that the institute desire detects to " comprising: the lead form that detects each lead one by one, and will have two leads of same wire form, it is right to be considered as a differential lines.
It should be noted that in preferred embodiment of the present invention above-mentioned layout is the layout of printed circuit board (PCB).In addition, the predetermined value of differential sets of line segments institute desire comparison changes along with the pairing attribute data of each differential sets of line segments.
The present invention proposes a kind of computer readable storage medium in addition, in order to store a computer program.Computer program is in order to be loaded in the computer system and to make computer system carry out above-mentioned arbitrary step of checking the right method of differential lines.
For above-mentioned feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. is described in detail below.
Description of drawings
Fig. 1 is for checking the right method flow diagram of differential lines according to preferred embodiment of the present invention.
Fig. 2 is in order to the layout inventory figure of preferred embodiment of the present invention to be described.
Fig. 3 is the flow chart of steps in order to explanation " determine a plurality of differential lines that the institute desire detects to ".
Fig. 4 is another flow chart of steps in order to explanation " determine a plurality of differential lines that the institute desire detects to ".
Fig. 5 is in order to the layout of preferred embodiment of the present invention to be described.
Fig. 6 is the flow chart of steps in order to explanation " calculating the distance of two line segments in each differential sets of line segments ".
Embodiment
Below will provide a kind of embodiment that checks the right method of differential lines according to the present invention.This field has knows that usually the form that the knowledgeable can computer program realizes following all embodiment, and utilizes computer readable storage medium to store this computer program, carries out it in order to computer, finishes the right method of differential lines of checking in the mode of automatic electronic.Wherein, differential lines is to for example being the signal wire of printed circuit board layout figure.
Fig. 1 is for checking the right method flow diagram of differential lines according to preferred embodiment of the present invention.Below the step of carrying out with regard to the right method of differential lines of checking of present embodiment be described.Please refer to Fig. 1, at first, in step S110, provide a layout, wherein this layout comprises many leads, and these leads are in order to the connection status between the expression electronic component.Afterwards, in step S120, above-mentioned layout is translated into a layout inventory (or from layout remittance abroad layout inventory), this layout inventory is then writing down the attribute data of each lead correspondence in the layout.
For example, be example with the layout inventory 210 that Fig. 2 was illustrated.With reference to Fig. 2, layout inventory 210 is writing down the lead title of each bar lead in layout, such as 1394_L_TPBON ', 1394_TPAON ', 1394_L_TPBOP ', CN507-4 U4-16, CN507-4 U4-17 and CLK_RCPUCLK ' are respectively the lead title of a certain lead in the layout.Moreover, layout inventory 210 is also done record further at the part lead, for example LAN-C_4-6-20 represents the lead form of lead CN507-4 U4-16 and CN507-4 U4-17, and CLK-HCLK-A 4-6-30 represents the lead form of lead CLK_RCPUCLK '.In present embodiment, the form title of lead contains attribute data.The word string 4-6-20 among Fig. 2 " LAN-C_4-6-20 " for example, it represents the right live width of differential lines is 4mil, the line-spacing that differential lines is right is 6mil, and the distance of this differential lines pair and other lines is 20mil.Similarly, the word string 4-6-30 among the CLK-HCLK-A_4-6-30 also represents live width, line-spacing and the line of lead and the distance between the line respectively.
Continuation after obtaining the pairing attribute data of each lead, in step S130, is compared the pairing attribute data of each lead with reference to Fig. 1, and is right with a plurality of differential lines that determine institute's desire detection from these leads.To have the knack of the method flow that this operator can more understand present embodiment in order allowing, below to enumerate the steps flow chart of 2 " determine a plurality of differential lines that the institute desire detects to ", further specify step S130.
The layout inventory that is illustrated with reference to flow chart of steps that Fig. 3 illustrated and Fig. 2.On the step that a plurality of differential lines of desire detection are right determining, when the pairing attribute data of each lead is the lead title, at first, in step S310, detect the lead title of each lead one by one.For example, in 210, detected lead title has 1394_L_TPBON ', 1394_TPAON ', 1394_L_TPBOP ', CN507-4 U4-16, CN507-4 U4-17 and CLK_RCPUCLK ' in the layout inventory.Afterwards, in step S320, find out lead title corresponding mutually in twos in these lead titles.For example, the pairing lead name of lead title 1394_L_TPBON ' is called 1394_L_TPBOP ', and the pairing lead name of lead title CN507-4 U4-16 is called CN507-4U4-17.Thus, in step S330, just can be in layout according to corresponding mutually in twos lead title, find out the differential lines desiring to check right.
On the other hand, the layout inventory figure that is illustrated with reference to flow chart of steps that Fig. 4 illustrated and Fig. 2.When the pairing attribute data of each lead is the lead form, at first, in step S410, detect the lead form of each lead one by one.For example, in 210, detected lead form has LAN-C_4-60-20 and CLK-HCLK-A_4-6-30 in the layout inventory.Afterwards, in step S420, will have two leads of same wire form, it is right to be considered as a differential lines.For example, in 210, the lead form of lead CN507-4 U4-16 and CN507-4U4-17 all is LAN-C_4-60-20 in the layout inventory, and it is right therefore lead CN507-4 U4-16 and CN507-4U4-17 to be considered as a differential lines.
Continuation is with reference to Fig. 1, desire when obtaining the differential lines checked to after, in step S140, find out each differential lines to formed turning point, with each differential lines to being distinguished into a plurality of differential sets of line segments.For example, be example with the layout that Fig. 5 was illustrated.In the layout of Fig. 5, the figure that is covered with lines is a lead 510, and the figure that is covered with real point is a lead 520, and lead 510 and 520 constitutes a differential lines to 50.In addition, the layout of Fig. 5 more shows via (via) 530～540 and pad (pad) 550～560.
Continuation is with reference to Fig. 5, and differential lines comprises ND1～ND8 to 50 turning point.Therefore, differential lines can be divided into line segment 511～513 with lead 510 according to turning point ND1 and ND2 to 50.Similarly, differential lines can be divided into line segment 521～527 with lead 520 according to turning point ND3～ND8 to 50.It should be noted that present embodiment do not check the line segment that is encompassed in lead Connection Element periphery one preset range.For example, the lead Connection Element that Fig. 5 illustrated comprises via 530～540 and pad 550～560,531 preset range wherein in order to expression via 530 peripheries, 551 preset range, 541 and 561 represented scopes by that analogy in order to expression pad 550 peripheries.
Because present embodiment is not checked the line segment that is encompassed in lead Connection Element periphery one preset range, therefore, line segment 523 and 524 in the peripheral preset range of via 530 and 540, and the line segment 526 and 527 in the peripheral preset range of pad 550 and 560, this skip over not with in checking.Therefore, under the situation that skips over line segment 523,524,526,527, line segment 511 and 521 is considered as a differential sets of line segments, line segment 512 and 522 is considered as another differential sets of line segments, and line segment 513 and 525 is again another differential sets of line segments.
Whether continuation after obtaining differential sets of line segments, in step S150, calculates the distance of two line segments in each differential sets of line segments with reference to Fig. 1, and the distance that will calculate compares with a predetermined value, correct with the layout type of judging the differential sets of line segments that is detected.Afterwards, and in step S160, the incorrect differential sets of line segments of layout type among the figure of display layout is so that the designer can be made amendment at incorrect differential sets of line segments.
To have the knack of the step S150 that this operator can more understand present embodiment in order allowing, below to enumerate the steps flow chart of " distance of calculating two line segments in each differential sets of line segments ".
With reference to the flow chart of steps that Fig. 6 illustrated, and be example with the differential sets of line segments that is constituted by line segment 512 and 522 in the layout of Fig. 2.In the process of the distance of calculating two line segments, at first in step S610, utilize the Origin And Destination (just turning point ND1 and ND2) of line segment 512, calculate primary vector corresponding to line segment 512.Similarly, in step S620, utilize the Origin And Destination (just turning point ND3 and ND4) of line segment 522, calculate secondary vector corresponding to line segment 522.Afterwards, in step S630, calculate the distance between above-mentioned primary vector and the secondary vector, with as the distance between line segment 512 and 522.
What deserves to be mentioned is that in step S150, described predetermined value can be set into a fixed value according to design requirement.But because the layout type of layout is ever-changing, therefore above-mentioned predetermined value also can be a change value, and it changes along with the pairing attribute data of each differential sets of line segments.For example, if lead CN507-4 U4-16 and CN507-4 U4-17 in lead 510 among Fig. 5 and 520 difference corresponding diagram, the 2 layout inventories.In other words, the differential sets of line segments that is constituted by line segment 512 and 522 among Fig. 5, its pairing attribute data (lead form) is LAN-C_4-60-20.Therefore, by the differential sets of line segments that line segment 512 and 522 is constituted, the line-spacing 60mils that can utilize among the LAN-C_4-60-20 to be implied is as the predetermined value of this differential sets of line segments institute desire comparison.
Similarly, if the lead title of each lead correspondence is also hidden as the described word string of lead form, then differential sets of line segments also can be along with the attribute data that is the lead title, the predetermined value of change institute desire comparison.
In sum, the present invention utilizes the practice of the layout type that each differential lines is right in the mechanical check layout, promotes the designer at operational convenience, and then promotes the serviceability of printed circuit board (PCB).
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when with being as the criterion that claim was defined.
Claims (12)
1. check the right method of differential lines for one kind, comprise the following steps:
One layout is provided, and wherein this layout comprises one first lead and one second lead; And
Whether compare one first attribute data of this first lead and one second attribute data of this second lead, be that a differential lines is right to differentiate this first lead and this second lead;
If this first lead and this second lead are that a differential lines is right, then check the line-spacing of this first lead and this second lead.
2. the right method of differential lines of checking as claimed in claim 1 is characterized in that, checks that the step of this first lead and this second lead line-spacing comprises:
With this differential lines to being distinguished at least one differential sets of line segments;
Calculate the distance of two line segments in this differential sets of line segments; And
Whether the distance of checking two line segments in this differential sets of line segments is in a tolerable scope.
3. the right method of differential lines of checking as claimed in claim 1 is characterized in that, also comprises:
From this layout remittance abroad one layout inventory, wherein this layout inventory is writing down this first lead and the pairing attribute data of this second lead.
4. the right method of differential lines of checking as claimed in claim 1 is characterized in that, also comprises:
Show the incorrect differential sets of line segments of layout type in this layout.
5. the right method of differential lines of checking as claimed in claim 1 is characterized in that, also comprises:
Lead title from this first lead captures this first attribute data; And
Lead title from this second lead captures this second attribute data.
6. the right method of differential lines of checking as claimed in claim 1 is characterized in that, also comprises:
Form title from this first lead captures this first attribute data; And
Form title from this second lead captures this second attribute data.
7. the right method of differential lines of checking as claimed in claim 6 is characterized in that, the step of " differentiate this first lead and this second lead whether be a differential lines to " comprising:
Whether with the form title of this second lead identical, if both form titles are identical, then this first lead and this second lead are that a differential lines is right if differentiating this first lead.
8. the right method of differential lines of checking as claimed in claim 1 is characterized in that this layout comprises a plurality of lead Connection Elements, and then the step of " with this differential lines to being distinguished into a plurality of differential sets of line segments " comprising:
Do not check the line segment that is encompassed in those lead Connection Element periphery one preset range.
9. the right method of differential lines of checking as claimed in claim 1 is characterized in that, the step of " calculating the distance of two line segments in each differential sets of line segments " comprising:
Utilize this line segment DS1
iOrigin And Destination, calculate should line segment DS1
iI primary vector;
Utilize this line segment DS2
iOrigin And Destination, calculate should line segment DS2
iI secondary vector, DS1 wherein
iWith DS2
iRepresent i two line segments in the differential sets of line segments respectively, i is the integer greater than 0; And
Calculate the distance between i primary vector and i the secondary vector, with distance as two line segments in i the differential sets of line segments.
10. the right method of differential lines of checking as claimed in claim 1 is characterized in that this predetermined value changes along with the pairing attribute data of each differential sets of line segments.
11. the right method of differential lines of checking as claimed in claim 1 is characterized in that this layout is the layout of printed circuit board (PCB).
12. a computer readable storage medium, in order to storing a computer program, this computer program is in order to be loaded in the computer system and to make this computer system carry out as each described method in 1 to 11 of the claim the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101675531A CN101206677A (en) | 2006-12-18 | 2006-12-18 | Method for verifying difference line pairs and storage medium capable of reading by computer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101675531A CN101206677A (en) | 2006-12-18 | 2006-12-18 | Method for verifying difference line pairs and storage medium capable of reading by computer |
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| CN101206677A true CN101206677A (en) | 2008-06-25 |
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| CNA2006101675531A Pending CN101206677A (en) | 2006-12-18 | 2006-12-18 | Method for verifying difference line pairs and storage medium capable of reading by computer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751483B (en) * | 2008-12-16 | 2011-12-07 | 英业达股份有限公司 | Layout method capable of automatically executing layout rule detection for line pair of differential signal |
| CN109657254A (en) * | 2017-10-10 | 2019-04-19 | 英业达科技有限公司 | The system and method for signal line topology on correcting circuit plate |
| CN112035922A (en) * | 2020-08-25 | 2020-12-04 | 中船文化科技(北京)有限公司 | Intelligent shelter layout planning system and method, electronic equipment and storage medium |
-
2006
- 2006-12-18 CN CNA2006101675531A patent/CN101206677A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751483B (en) * | 2008-12-16 | 2011-12-07 | 英业达股份有限公司 | Layout method capable of automatically executing layout rule detection for line pair of differential signal |
| CN109657254A (en) * | 2017-10-10 | 2019-04-19 | 英业达科技有限公司 | The system and method for signal line topology on correcting circuit plate |
| CN112035922A (en) * | 2020-08-25 | 2020-12-04 | 中船文化科技(北京)有限公司 | Intelligent shelter layout planning system and method, electronic equipment and storage medium |
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