JPH03282971A - Method for managing parts reference number - Google Patents

Abstract

PURPOSE:To manage parts reference numbers(RNs) so as not to overlap them in edition and design by forming an RN managing file and allocating a unique RN to a job based upon data in the file and connection data consisting of a virtual number. CONSTITUTION:A required reference block is read out of a layout(LO) file 3 to an LO system 5 and arranged on a required position at first. Then, the RN file is formed. Each RN managing file is constituted of an upper block name, an intra-block RN, an intra-job interface number, and a virtual number 23 and the files corresponding to the number of parts are formed. When the virtual number is applied, the RN of the data base in each job and the display contents of a CRT are rewritten based upon the number. After completing the above operation, the succeeding reference block is read out and arranged on a proper position and similar operation is repeated.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a component reference number that guarantees the uniqueness of component reference numbers in printed circuit board CAD that creates circuit diagrams and layout diagrams using a plurality of basic blocks. This relates to management methods.

<Prior art> In printed circuit board CAD, frequently used blocks are registered in advance as basic blocks, and when designing a board, the registered basic blocks are read out and placed at an appropriate position. For example, in FIG. 9, if two basic blocks, BLKI and BLK2, are registered in advance as shown in (A), these basic blocks are read out and placed appropriately. By doing so, a predetermined circuit can be easily created as shown in (B).

In a circuit created in this way, if the component reference numbers overlap, it becomes impossible to identify the component, which causes problems in subsequent processing. The parts in each registered basic block have a unique reference number within that basic block (symbols such as 01 and R1 in Figure 9 (A)).
However, since the numbers may overlap between basic blocks, and multiple of the same basic block may be used, it is impossible to avoid duplication of component reference numbers as is. Therefore, it is necessary to reassign component reference numbers in the fabricated circuit so that the numbers do not overlap. To renumber reference numbers: (1) Specify an offset for each basic block, and use this offset to automatically renumber. For example, in FIG. 9(A), offset "1" is applied to BLK2.
0", the part reference number L of BLK2 is specified.
1 and C1 become Lll and C11, respectively, and do not overlap with the BLKI numbers.

(2) When registering basic blocks, it is the user's responsibility to manage component reference numbers so that they do not overlap.

There is. In this way, component reference numbers are prevented from being duplicated on the created circuit.

<Problems to be Solved by the Invention> However, in conventional printed circuit board CAD, there is no method for automatically managing component reference numbers in a form that links both layout diagrams and circuit diagrams. Therefore, for example, using multiple blocks on a layout diagram,
Even if a unique reference number within the job was assigned through some procedure, the reference number could not be correctly back-annotated to the relevant part on the circuit diagram.

<Object of the Invention> The object of the invention is to prevent reference numbers from being duplicated in both top-down editing and design, which involves editing and synthesizing from the circuit diagram, and bottom-up editing and designing, which edits and synthesizes from the board design side. The purpose is to provide a method for managing

In order to solve the above problems, the present invention provides a component reference number consisting of a basic block name, a component reference number within that block, an identification number of the same block within one job, and a temporary number. Create a management file and
The data in this parts reference number management file,
A unique component reference number is assigned to the job based on connection data consisting of a temporary number.

Function: Reference numbers can be automatically managed by linking layout diagrams and circuit diagrams.

<Example> In printed circuit board CAD, often used circuits are divided into blocks in order to improve design efficiency, and these circuits are combined to create complex circuits and layout diagrams. Such basic circuits are registered as basic blocks with connection data. A basic block with connection data is a basic block circuit diagram and 1=
This refers to a block that has a layout diagram corresponding to 1.

In editing design using basic blocks having such connection data, there are two types: top-down editing design that edits and synthesizes from the circuit diagram, and bottom-down editing design that edits and synthesizes from the board design side.

FIG. 2 shows a basic configuration diagram of a device that performs such editing design. In FIG. 2, reference numeral 1 denotes a basic block section, which includes a circuit diagram file 2 and a layout file 3. The circuit diagram file 2 stores circuit diagram data of basic blocks, and the layout file 3 stores layout data of basic blocks. 4 is a circuit diagram system, into which the data of circuit diagram file 2 is input,
Synthesize a circuit diagram using basic blocks. Reference numeral 5 denotes a layout system, into which data of the layout file 3 is input and layout is performed. 6 is a reference number management file, which is a file for assigning reference numbers to the synthesized circuit diagram and layout diagram to avoid duplication. Reference numeral 7 denotes a connection data file, which stores data on the connection relationship of each component. Reference number management file 6 and connection data file 7 are in circuit diagram system 4
Data is written and read by the layout system 5. FIG. 3 shows the hardware configuration of the circuit diagram system 4 and layout system 5. A memory 9 is attached to the CPU 8, which performs overall management and necessary processing, and displays the results on the CRTIO. Basic blocks and job data are registered in the disks 11 and 12, respectively. Incidentally, the disks 11 and 12 may be divided into one disk.

Next, the operation when editing and synthesizing from the bottom up, that is, from the board design side, will be explained based on the flowchart of FIG. First, necessary basic blocks are read out from the layout file 3 onto the layout system 5 and placed at desired positions. Figure 4 shows an example of a basic block, where (A) is a basic block diagram of the circuit diagram of BLKI and BLK2, and (,B) is a basic block diagram of the layout corresponding to the basic block diagram of this circuit diagram. The 0th order is,
Create a reference number management file.

FIG. 5 shows the structure of the reference number management file.

The reference number management file has upper block name 20,
It consists of an intra-block reference number 21, an intra-job instance number 22, and a temporary number 23. This management file data is created for the number of parts. The name of the basic block read from the layout file 3 is stored in the upper block name 20. The intra-block reference number 21 stores unique numbers within the basic block, such as CI, R1, etc. in FIG. 4(B). The intra-job instance number 22 stores a number for identifying when a plurality of the same basic blocks are used in the same job. Temporary number 23 has layout system 5. t or a number automatically assigned when a basic block is developed in the circuit diagram system 4 is stored. This temporary number is assigned, for example, by referring to a reference number management file and connection data, and by effectively utilizing the alphabetic characters of the reference number in the normal basic block. That is, reference numbers within a basic block are used to the extent that they do not overlap within the same job. At this time, as described in the prior art, an offset reference number may be assigned. When a temporary number is assigned, the reference number of the database in the job and the display on the CRT are rewritten with this temporary number. When these operations are completed, the next basic block is read and placed in the appropriate position, and the same operations are repeated. FIG. 6 is a layout diagram obtained in this manner, and is stored in the job data registration disk 12 of the layout system 5. Moreover, FIG. 7 shows the contents of the reference number management file. Since 01 of basic block BLK2 is duplicated, C2
Next, refer to the created reference number management file and assign a reference number to the circuit diagram. Therefore, using the upper block name and in-block reference number of the reference number management file as keys, the circuit diagram number is rewritten with a temporary number assigned based on the layout diagram using the method described above. By doing this, consistency between the layout diagram and the circuit diagram can be maintained. FIG. 8 shows the created circuit diagram, which is stored in the job registration disk 12 of the circuit diagram system 4. FIG. 8(A) shows the created circuit diagram, and FIG. 8(B) shows the connection data. The connection data is created in the form of a sequence of net name: kakōgo-bin number. At this time, if the circuit diagram is created using a circuit diagram basic block different from the basic block used in the layout diagram, by outputting an error message, it is possible to give a guide to the correct circuit diagram. Furthermore, when the same block name is used multiple times, temporary number connection data is created by referring to the output block connection data and reference number management file, and the connection data from the layout side is When compared and matched, the temporary number is fed back.

Note that the procedure is the same for top-down editing design, that is, editing and synthesizing from a circuit diagram, so the explanation will be omitted.

<Effects of the Invention> As explained above in detail based on the embodiments, in this invention, a basic block name, a component reference number within that block, an identification number of the same block within one job, and a temporary number are provided. A parts reference number management file is created, and a unique parts reference number is assigned to the job from the data in this parts reference number management file and the connection data. Therefore, when creating a basic block, there is no need to manually manage component reference numbers.

Another advantage is that consistency of component reference numbers can be maintained in both the circuit diagram and the layout diagram.

Furthermore, forward annotation/back annotation of component reference numbers is possible in both top-down and bottom-up editing designs.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing an embodiment of the component reference number management method according to the present invention, FIGS. 2 and 3 are configuration diagrams of the device, FIG. 4 is an example of a basic block diagram, and FIGS. 7 is a configuration diagram of a reference number management file, FIG. 6 is a created layout diagram, FIG. 8 is a created circuit diagram and connection data, and FIG. 9 is a diagram for explaining layout design. 1... Basic block diagram, 4... Circuit diagram system, 5
... Layout system, 11... Disk for basic block registration, 12... Disk for job data registration.

Claims (1)

[Claims] A method for managing component reference numbers used in printed circuit board design in which circuit diagrams and layout diagrams are created by appropriately arranging multiple basic blocks. A parts reference number management file consisting of block identification numbers and temporary numbers is created, and the data and circuit diagrams in this parts reference number management file are
A method for managing component reference numbers, characterized in that a unique component reference number is assigned to a job by referring to a connection data file extracted from a layout.