CN111859846A - Negative film comparison method, system, equipment and medium of PCB - Google Patents
Negative film comparison method, system, equipment and medium of PCB Download PDFInfo
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- 238000005553 drilling Methods 0.000 claims abstract description 56
- 238000004590 computer program Methods 0.000 claims description 14
- 230000008676 import Effects 0.000 claims description 6
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/398—Design verification or optimisation, e.g. using design rule check [DRC], layout versus schematics [LVS] or finite element methods [FEM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2115/00—Details relating to the type of the circuit
- G06F2115/12—Printed circuit boards [PCB] or multi-chip modules [MCM]
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The invention discloses a method for comparing a negative film of a PCB (printed circuit board), which comprises the following steps of: importing negative films of different versions to be compared; scanning the negative film according to the device coding list, the drilling hole name list and the line segment name list of the negative film to obtain coordinates corresponding to all devices, coordinates corresponding to all drilling holes and coordinates corresponding to all line segments on the negative film of each version; comparing the negative films of different versions according to the codes and the coordinates corresponding to all the devices, the names and the coordinates corresponding to all the drill holes and the names and the coordinates corresponding to all the line segments; and highlighting the devices with different codes or the devices with the same codes and different coordinates, the drill holes with different names or the drill holes with the same names and different coordinates, the line segments with different names or the line segments with the same names and different coordinates through comparison and judgment. The invention also discloses a system, a computer device and a readable storage medium. The scheme provided by the invention can be used for rapidly importing different versions and making a difference ratio.
Description
Technical Field
The invention relates to the field of PCBs, in particular to a method, a system, equipment and a storage medium for comparing a negative film of a PCB.
Background
In the development process of the server, it is necessary to continuously modify the pcb (printed Circuit board) design, and the design of the motherboard or the small card is always modified, so that the design comparison between the front and the rear boards is required after the modification, thereby avoiding the passive arrival of places which do not need to be modified. Thus requiring the Printed Circuit Board engineer to compare the two versions of the negative output.
In the current design process, an engineer outputs the front and rear negative films from Cadence Allegro software, compares the front and rear negative films with another software, and confirms the front and rear negative films in a manual visual mode. Outputting two versions of negative films from Cadence Allegro software is time-consuming and labor-consuming, and the two sets of software are compared back and forth to confirm that the negative films are overlooked.
Disclosure of Invention
In view of the above, in order to overcome at least one aspect of the above problems, an embodiment of the present invention provides a method for comparing bottom sheets of PCBs, including the steps of:
importing negative films of different versions to be compared;
scanning the negative plate according to the device coding list, the drilling hole name list and the line segment name list of the negative plate to obtain coordinates corresponding to all devices, coordinates corresponding to all drilling holes and coordinates corresponding to all line segments on the negative plate of each version;
Comparing the negative films of different versions according to the codes and the coordinates corresponding to all the devices, the names and the coordinates corresponding to all the drill holes and the names and the coordinates corresponding to all the line segments;
judging whether codes corresponding to all devices of the negatives of different versions are the same and coordinates corresponding to the devices with the same codes are the same, whether names corresponding to all drill holes are the same and coordinates corresponding to the drill holes with the same names are the same, and whether names corresponding to all line segments are the same and coordinates corresponding to the line segments with the same names are the same according to the corresponding lists one by one;
highlighting and displaying devices with different codes or devices with the same codes and different coordinates, drill holes with different names or drill holes with the same names and different coordinates, line segments with different names or line segments with the same names and different coordinates.
In some embodiments, importing different versions of a negative to be compared further comprises:
leading the negative films of different versions to be compared into Cadence Allegro;
and creating a new layer for each imported negative film and renaming each new layer so as to determine and select the negative films of different versions to be compared according to the renamed new layers.
In some embodiments, scanning the film according to the device code list, the drilling hole name list and the line segment name list of the film to obtain coordinates corresponding to all devices, coordinates corresponding to all drilling holes and coordinates corresponding to all line segments on each version of the film further comprises:
scanning according to each device code in the device code list in sequence to obtain a central coordinate corresponding to each device code in sequence;
scanning according to each drilling hole name in the drilling hole name list in sequence to obtain a central coordinate corresponding to each drilling hole name in sequence;
and scanning according to each line segment name in the line segment name list in sequence to obtain a plurality of coordinates corresponding to each line segment name in sequence.
In some embodiments, further comprising:
and scanning in a mode of repeatedly scanning for a preset distance along a first preset direction and then scanning for the preset distance again along a second preset direction opposite to the first preset direction during each scanning until the device code, the drilling name or the line segment name to be scanned is scanned on the negative.
Based on the same inventive concept, according to another aspect of the present invention, embodiments of the present invention also provide a negative film comparison system of a PCB, including:
The import module is configured to import the negative plates of different versions to be compared;
the scanning module is configured to scan the negative plate according to the device coding list, the drilling hole name list and the line segment name list of the negative plate so as to obtain coordinates corresponding to all devices, coordinates corresponding to all drilling holes and coordinates corresponding to all line segments on the negative plate of each version;
the comparison module is configured to compare the negative films of different versions according to the codes and the coordinates corresponding to all the devices, the names and the coordinates corresponding to all the drill holes and the names and the coordinates corresponding to all the line segments;
a judging module configured to judge one by one, according to the corresponding list, whether codes corresponding to all devices of the negatives of the different versions are the same and coordinates corresponding to devices of the same codes are the same, whether names corresponding to all the drill holes are the same and coordinates corresponding to drill holes of the same name are the same, and whether names corresponding to all the line segments are the same and coordinates corresponding to line segments of the same name are the same;
the highlight module is configured to highlight devices with different codes or devices with the same codes and different coordinates, drill holes with different names or drill holes with the same names and different coordinates, line segments with different names or line segments with the same names and different coordinates.
In some embodiments, the scanning module is further configured to:
leading the negative films of different versions to be compared into Cadence Allegro;
and creating a new layer for each imported negative film and renaming each new layer so as to determine and select the negative films of different versions to be compared according to the renamed new layers.
In some embodiments, the scanning module is further configured to:
scanning according to each device code in the device code list in sequence to obtain a central coordinate corresponding to each device code in sequence;
scanning according to each drilling hole name in the drilling hole name list in sequence to obtain a central coordinate corresponding to each drilling hole name in sequence;
and scanning according to each line segment name in the line segment name list in sequence to obtain a plurality of coordinates corresponding to each line segment name in sequence.
In some embodiments, the scanning module is further configured to:
and scanning in a mode of repeatedly scanning for a preset distance along a first preset direction and then scanning for the preset distance again along a second preset direction opposite to the first preset direction during each scanning until the device code, the drilling name or the line segment name to be scanned is scanned on the negative.
Based on the same inventive concept, according to another aspect of the present invention, an embodiment of the present invention further provides a computer apparatus, including:
at least one processor; and
a memory storing a computer program operable on the processor, wherein the processor executes the program to perform the steps of any of the above-described methods of negative film comparison of PCBs.
Based on the same inventive concept, according to another aspect of the present invention, there is also provided a computer-readable storage medium storing a computer program which, when executed by a processor, performs the steps of any of the above-described methods for negative film comparison of PCBs.
The invention has one of the following beneficial technical effects: the scheme provided by the invention can be used for rapidly importing different versions and carrying out difference comparison, so that the back-and-forth cross check of two sets of software is reduced, the Layout design efficiency is improved, and the error rate is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for comparing bottom sheets of PCBs according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a negative film comparison system of a PCB provided by an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a computer device provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
According to an aspect of the present invention, an embodiment of the present invention provides a method for comparing bottom sheets of PCBs, as shown in fig. 1, which may include the steps of: s1, importing the negative films of different versions to be compared; s2, scanning the negative film according to the device coding list, the drilling hole name list and the line segment name list of the negative film to obtain coordinates corresponding to all devices, coordinates corresponding to all drilling holes and coordinates corresponding to all line segments on the negative film of each version; s3, comparing the negative films of different versions according to the codes and coordinates corresponding to all the devices, the names and coordinates corresponding to all the drill holes and the names and coordinates corresponding to all the line segments; s4, judging whether codes corresponding to all devices of the negative films of different versions are the same and coordinates corresponding to the devices with the same codes are the same, whether names corresponding to all drilling holes are the same and coordinates corresponding to the drilling holes with the same names are the same, and whether names corresponding to all line segments are the same and coordinates corresponding to the line segments with the same names are the same according to the corresponding lists one by one; s5, highlighting the devices with different codes or the same codes and different coordinates, the drill holes with different names or the drill holes with the same names and different coordinates, the line segments with different names or the line segments with the same names and different coordinates.
The scheme provided by the invention can be used for rapidly importing different versions and carrying out difference comparison, so that the back-and-forth cross check of two sets of software is reduced, the Layout design efficiency is improved, and the error rate is reduced.
In some embodiments, in step S1, importing different versions of a negative to be compared further comprises:
leading the negative films of different versions to be compared into Cadence Allegro;
and creating a new layer for each imported negative film and renaming each new layer so as to determine and select the negative films of different versions to be compared according to the renamed new layers.
Specifically, the Cadence Allegro writes a program for automatically importing the film, then puts the skip program into a skip menu, executes the skip program to automatically import the film to run the skip, jumps out of a conversation window, and selects the film file to be imported, wherein the program is used for selecting the film files to be compared (batch selection is available). The newly loaded negative can automatically create a new layer and name the new layer name according to the name which can be identified by the user, so that the negative name to be compared can be quickly selected when the negative is compared in the subsequent process.
In some embodiments, step S2, scanning the film according to the device code list, the drill hole name list, and the line segment name list of the film to obtain coordinates corresponding to all devices, all drill holes, and all line segments on each version of the film further includes:
scanning according to each device code in the device code list in sequence to obtain a central coordinate corresponding to each device code in sequence;
scanning according to each drilling hole name in the drilling hole name list in sequence to obtain a central coordinate corresponding to each drilling hole name in sequence;
and scanning according to each line segment name in the line segment name list in sequence to obtain a plurality of coordinates corresponding to each line segment name in sequence.
Specifically, each film is provided with a device code list, a drilling hole name list and a line segment name list, and the film is provided with a corresponding device code identifier, a drilling hole name identifier and a line segment name identifier on each device, drilling hole and line segment, so that after the film is led into Cadence Allegro, all icons (devices, drilling holes and line segments) on the film are presented in a coordinate node mode, and therefore codes and coordinates corresponding to each device can be determined through the device code list and the device code identifiers on the film, names and coordinates corresponding to each drilling hole are determined through the drilling hole name list and the drilling hole name identifiers on the film, and names and coordinates corresponding to each line segment are determined through the line segment name list and the line segment name identifiers on the film.
It should be noted that, the device and the drill hole are determined by determining the corresponding coordinates by using the central coordinate point, and the line segment is determined by using a plurality of coordinates, so that the points can be taken according to a preset rule when determining the plurality of coordinates of the line segment, for example, two end points of the line segment and the N-th equally divided point can be taken as the corresponding coordinates of the line segment. And each time scanning is performed according to the lists (the device code list, the drilling hole name list and the line segment name list), one code or name is used for scanning to obtain corresponding coordinates.
In some embodiments, further comprising:
and scanning in a mode of repeatedly scanning for a preset distance along a first preset direction and then scanning for the preset distance again along a second preset direction opposite to the first preset direction during each scanning until the device code, the drilling name or the line segment name to be scanned is scanned on the negative.
Specifically, scanning may be performed in a manner of starting scanning from one end of the negative film by a preset width, repeatedly scanning for a preset distance in a first preset direction, and then scanning for the preset distance again in a second preset direction opposite to the first preset direction, and stopping scanning when a corresponding device code, a drilling name, or a line segment name is scanned.
In some embodiments, in step S4, it is determined one by one according to the corresponding list whether codes corresponding to all devices of the bottom sheets of different versions are the same and coordinates corresponding to devices of the same code are the same, names corresponding to all drill holes are the same and coordinates corresponding to drill holes of the same name are the same, and coordinates corresponding to line segments of the same name are the same. When judging the line segment, firstly judging whether the names of the line segments are the same, and if so, continuously judging whether the coordinates are the same.
It should be noted that before scanning, the device codes, the drilling names, or the line segment names on the lists (the device code list, the drilling name list, and the line segment name list) of different versions may be sorted in a certain order, for example, the same device codes, drilling names, or line segment names may be arranged at corresponding positions, and then judged one by one, so that the devices, the drilling holes, and the line segments with the same device codes, the same drilling names, and the same line segment names may be preferentially judged.
In some embodiments, in step S5, in highlighting the devices with different codes or the same codes and different coordinates, the holes with different names or the holes with the same names and different coordinates, the line segments with different names or the line segments with the same names and different coordinates, specifically, as long as the codes or the coordinates of the corresponding devices of the phototools of different versions are different, the device is considered to have a difference, for example, the device of the phototool of version a is coded as 1, the device of the phototool of version a is coded as a, the device of the phototool of version B is coded as 1, and the device of the phototools a and B is considered to have a difference and highlighted. Similarly, if the names or coordinates of the corresponding holes of the negatives of different versions are different, the holes are considered to be different, or if the names or coordinates of the corresponding line segments of the negatives of different versions are different, the line segments are considered to be different.
The scheme provided by the invention can be used for rapidly importing different versions and carrying out difference comparison, so that the back-and-forth cross check of two sets of software is reduced, the Layout design efficiency is improved, and the error rate is reduced.
Based on the same inventive concept, according to another aspect of the present invention, an embodiment of the present invention further provides a negative film comparison system 400 of a PCB, as shown in fig. 2, comprising:
An importing module 401, wherein the importing module 401 is configured to import different versions of negatives to be compared;
a scanning module 402, where the scanning module 402 is configured to scan the negative according to the device code list, the drilling hole name list, and the line segment name list of the negative to obtain coordinates corresponding to all devices, coordinates corresponding to all drilling holes, and coordinates corresponding to all line segments on the negative of each version;
a comparison module 403, wherein the comparison module 403 is configured to compare the different versions of the negative films according to the codes and coordinates corresponding to all the devices, the names and coordinates corresponding to all the drill holes, and the names and coordinates corresponding to all the line segments;
a judging module 404, where the judging module 404 is configured to judge one by one according to the corresponding list whether codes corresponding to all devices of the negatives of the different versions are the same and coordinates corresponding to devices with the same codes are the same, whether names corresponding to all drill holes are the same and coordinates corresponding to drill holes with the same names are the same, and whether names corresponding to all line segments are the same and coordinates corresponding to line segments with the same names are the same;
a highlighting module 405, wherein the highlighting module 405 is configured to highlight devices with different codes or devices with the same codes and different coordinates, drill holes with different names or drill holes with the same names and different coordinates, line segments with different names or line segments with the same names and different coordinates.
In some embodiments, the scanning module 402 is further configured to:
leading the negative films of different versions to be compared into Cadence Allegro;
and creating a new layer for each imported negative film and renaming each new layer so as to determine and select the negative films of different versions to be compared according to the renamed new layers.
In some embodiments, the scanning module 402 is further configured to:
scanning according to each device code in the device code list in sequence to obtain a central coordinate corresponding to each device code in sequence;
scanning according to each drilling hole name in the drilling hole name list in sequence to obtain a central coordinate corresponding to each drilling hole name in sequence;
and scanning according to each line segment name in the line segment name list in sequence to obtain a plurality of coordinates corresponding to each line segment name in sequence.
In some embodiments, the scanning module 402 is further configured to:
and scanning in a mode of repeatedly scanning for a preset distance along a first preset direction and then scanning for the preset distance again along a second preset direction opposite to the first preset direction during each scanning until the device code, the drilling name or the line segment name to be scanned is scanned on the negative.
Based on the same inventive concept, according to another aspect of the present invention, as shown in fig. 3, an embodiment of the present invention further provides a computer apparatus 501, comprising:
at least one processor 520; and
a memory 510, the memory 510 storing a computer program 511 executable on the processor, the processor 520 executing the program to perform the steps of any of the above PCB negative film comparison methods.
Based on the same inventive concept, according to another aspect of the present invention, as shown in fig. 4, an embodiment of the present invention further provides a computer-readable storage medium 601, where the computer-readable storage medium 601 stores computer program instructions 610, and the computer program instructions 610, when executed by a processor, perform the steps of any of the above PCB negative film comparison methods.
Finally, it should be noted that, as will be understood by those skilled in the art, all or part of the processes of the methods of the above embodiments may be implemented by a computer program to instruct related hardware to implement the methods. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like. The embodiments of the computer program may achieve the same or similar effects as any of the above-described method embodiments.
In addition, the apparatuses, devices, and the like disclosed in the embodiments of the present invention may be various electronic terminal devices, such as a mobile phone, a Personal Digital Assistant (PDA), a tablet computer (PAD), a smart television, and the like, or may be a large terminal device, such as a server, and the like, and therefore the scope of protection disclosed in the embodiments of the present invention should not be limited to a specific type of apparatus, device. The client disclosed by the embodiment of the invention can be applied to any one of the electronic terminal devices in the form of electronic hardware, computer software or a combination of the electronic hardware and the computer software.
Furthermore, the method disclosed according to an embodiment of the present invention may also be implemented as a computer program executed by a CPU, and the computer program may be stored in a computer-readable storage medium. The computer program, when executed by the CPU, performs the above-described functions defined in the method disclosed in the embodiments of the present invention.
Further, the above method steps and system elements may also be implemented using a controller and a computer readable storage medium for storing a computer program for causing the controller to implement the functions of the above steps or elements.
Further, it should be appreciated that the computer-readable storage media (e.g., memory) herein can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. By way of example, and not limitation, nonvolatile memory can include Read Only Memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which can act as external cache memory. By way of example and not limitation, RAM is available in a variety of forms such as synchronous RAM (DRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The storage devices of the disclosed aspects are intended to comprise, without being limited to, these and other suitable types of memory.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as software or hardware depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments of the present invention.
The various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein may be implemented or performed with the following components designed to perform the functions herein: a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination of these components. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP, and/or any other such configuration.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
In one or more exemplary designs, the functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy disk, blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.
The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A negative film comparison method of a PCB is characterized by comprising the following steps of:
importing negative films of different versions to be compared;
scanning the negative plate according to the device coding list, the drilling hole name list and the line segment name list of the negative plate to obtain coordinates corresponding to all devices, coordinates corresponding to all drilling holes and coordinates corresponding to all line segments on the negative plate of each version;
comparing the negative films of different versions according to the codes and the coordinates corresponding to all the devices, the names and the coordinates corresponding to all the drill holes and the names and the coordinates corresponding to all the line segments;
Judging whether codes corresponding to all devices of the negatives of different versions are the same and coordinates corresponding to the devices with the same codes are the same, whether names corresponding to all drill holes are the same and coordinates corresponding to the drill holes with the same names are the same, and whether names corresponding to all line segments are the same and coordinates corresponding to the line segments with the same names are the same according to the corresponding lists one by one;
highlighting and displaying devices with different codes or devices with the same codes and different coordinates, drill holes with different names or drill holes with the same names and different coordinates, line segments with different names or line segments with the same names and different coordinates.
2. The method of claim 1, wherein importing different versions of a negative to be compared further comprises:
leading the negative films of different versions to be compared into Cadence Allegro;
and creating a new layer for each imported negative film and renaming each new layer so as to determine and select the negative films of different versions to be compared according to the renamed new layers.
3. The method of claim 1, wherein scanning the film according to the device code list, the drill hole name list, and the line segment name list of the film to obtain coordinates corresponding to all devices, all drill holes, and all line segments on each version of the film further comprises:
Scanning according to each device code in the device code list in sequence to obtain a central coordinate corresponding to each device code in sequence;
scanning according to each drilling hole name in the drilling hole name list in sequence to obtain a central coordinate corresponding to each drilling hole name in sequence;
and scanning according to each line segment name in the line segment name list in sequence to obtain a plurality of coordinates corresponding to each line segment name in sequence.
4. The method of claim 3, further comprising:
and scanning in a mode of repeatedly scanning for a preset distance along a first preset direction and then scanning for the preset distance again along a second preset direction opposite to the first preset direction during each scanning until the device code, the drilling name or the line segment name to be scanned is scanned on the negative.
5. A negative contrast system for a PCB, comprising:
the import module is configured to import the negative plates of different versions to be compared;
the scanning module is configured to scan the negative plate according to the device coding list, the drilling hole name list and the line segment name list of the negative plate so as to obtain coordinates corresponding to all devices, coordinates corresponding to all drilling holes and coordinates corresponding to all line segments on the negative plate of each version;
The comparison module is configured to compare the negative films of different versions according to the codes and the coordinates corresponding to all the devices, the names and the coordinates corresponding to all the drill holes and the names and the coordinates corresponding to all the line segments;
a judging module configured to judge one by one, according to the corresponding list, whether codes corresponding to all devices of the negatives of the different versions are the same and coordinates corresponding to devices of the same codes are the same, whether names corresponding to all the drill holes are the same and coordinates corresponding to drill holes of the same name are the same, and whether names corresponding to all the line segments are the same and coordinates corresponding to line segments of the same name are the same;
the highlight module is configured to highlight devices with different codes or devices with the same codes and different coordinates, drill holes with different names or drill holes with the same names and different coordinates, line segments with different names or line segments with the same names and different coordinates.
6. The system of claim 5, wherein the scanning module is further configured to:
leading the negative films of different versions to be compared into Cadence Allegro;
And creating a new layer for each imported negative film and renaming each new layer so as to determine and select the negative films of different versions to be compared according to the renamed new layers.
7. The system of claim 5, wherein the scanning module is further configured to:
scanning according to each device code in the device code list in sequence to obtain a central coordinate corresponding to each device code in sequence;
scanning according to each drilling hole name in the drilling hole name list in sequence to obtain a central coordinate corresponding to each drilling hole name in sequence;
and scanning according to each line segment name in the line segment name list in sequence to obtain a plurality of coordinates corresponding to each line segment name in sequence.
8. The system of claim 7, wherein the scanning module is further configured to:
and scanning in a mode of repeatedly scanning for a preset distance along a first preset direction and then scanning for the preset distance again along a second preset direction opposite to the first preset direction during each scanning until the device code, the drilling name or the line segment name to be scanned is scanned on the negative.
9. A computer device, comprising:
at least one processor; and
memory storing a computer program operable on the processor, characterized in that the processor executes the program to perform the steps of the method according to any of claims 1-4.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, is adapted to carry out the steps of the method according to any one of claims 1-4.
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| CN113352397A (en) * | 2021-06-29 | 2021-09-07 | 江苏艾诺信电路技术有限公司 | Multilayer board drilling method, system, device, equipment and storage medium |
| CN117610478A (en) * | 2024-01-24 | 2024-02-27 | 上海合见工业软件集团有限公司 | Method for recovering design diagram, electronic equipment and storage medium |
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| CN102156136A (en) * | 2011-03-14 | 2011-08-17 | 浙江展邦电子科技有限公司 | Method for detecting PCB negative film |
| CN111278230A (en) * | 2020-03-26 | 2020-06-12 | 定颖电子(黄石)有限公司 | Method for screening negative films of printed circuit boards |
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| CN102156136A (en) * | 2011-03-14 | 2011-08-17 | 浙江展邦电子科技有限公司 | Method for detecting PCB negative film |
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